[97] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://ogre.sourceforge.net/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.s
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 |
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| 26 |
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| 27 | #include "OgreGLRenderSystem.h"
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| 28 | #include "OgreRenderSystem.h"
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| 29 | #include "OgreLogManager.h"
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| 30 | #include "OgreStringConverter.h"
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| 31 | #include "OgreLight.h"
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| 32 | #include "OgreCamera.h"
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| 33 | #include "OgreGLTextureManager.h"
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| 34 | #include "OgreGLHardwareVertexBuffer.h"
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| 35 | #include "OgreGLHardwareIndexBuffer.h"
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| 36 | #include "OgreGLDefaultHardwareBufferManager.h"
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| 37 | #include "OgreGLUtil.h"
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| 38 | #include "OgreGLGpuProgram.h"
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| 39 | #include "OgreGLGpuNvparseProgram.h"
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| 40 | #include "ATI_FS_GLGpuProgram.h"
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| 41 | #include "OgreGLGpuProgramManager.h"
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| 42 | #include "OgreException.h"
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| 43 | #include "OgreGLATIFSInit.h"
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| 44 | #include "OgreGLSLExtSupport.h"
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| 45 | #include "OgreGLHardwareOcclusionQuery.h"
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| 46 | #include "OgreGLContext.h"
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| 47 |
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| 48 |
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| 49 | #ifdef HAVE_CONFIG_H
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| 50 | # include "config.h"
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| 51 | #endif
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| 52 |
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| 53 | // Convenience macro from ARB_vertex_buffer_object spec
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| 54 | #define VBO_BUFFER_OFFSET(i) ((char *)NULL + (i))
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| 55 |
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| 56 | // Pointers to extension functions
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| 57 | GL_ActiveTextureARB_Func glActiveTextureARB_ptr;
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| 58 | GL_ClientActiveTextureARB_Func glClientActiveTextureARB_ptr;
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| 59 | GL_SecondaryColorPointerEXT_Func glSecondaryColorPointerEXT_ptr;
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[115] | 60 | GL_SecondaryColor3fEXT_Func glSecondaryColor3fEXT_ptr;
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[97] | 61 | GL_GenBuffersARB_Func glGenBuffersARB_ptr;
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| 62 | GL_BindBufferARB_Func glBindBufferARB_ptr;
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| 63 | GL_DeleteBuffersARB_Func glDeleteBuffersARB_ptr;
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| 64 | GL_MapBufferARB_Func glMapBufferARB_ptr;
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| 65 | GL_UnmapBufferARB_Func glUnmapBufferARB_ptr;
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| 66 | GL_BufferDataARB_Func glBufferDataARB_ptr;
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| 67 | GL_BufferSubDataARB_Func glBufferSubDataARB_ptr;
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| 68 | GL_GetBufferSubDataARB_Func glGetBufferSubDataARB_ptr;
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| 69 | GL_GenProgramsARB_Func glGenProgramsARB_ptr;
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| 70 | GL_DeleteProgramsARB_Func glDeleteProgramsARB_ptr;
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| 71 | GL_BindProgramARB_Func glBindProgramARB_ptr;
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| 72 | GL_ProgramStringARB_Func glProgramStringARB_ptr;
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| 73 | GL_ProgramLocalParameter4fvARB_Func glProgramLocalParameter4fvARB_ptr;
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| 74 | GL_ProgramParameter4fvNV_Func glProgramParameter4fvNV_ptr;
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| 75 | GL_VertexAttribPointerARB_Func glVertexAttribPointerARB_ptr;
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| 76 | GL_EnableVertexAttribArrayARB_Func glEnableVertexAttribArrayARB_ptr;
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| 77 | GL_DisableVertexAttribArrayARB_Func glDisableVertexAttribArrayARB_ptr;
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| 78 | GL_CombinerStageParameterfvNV_Func glCombinerStageParameterfvNV_ptr;
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| 79 | GL_CombinerParameterfvNV_Func glCombinerParameterfvNV_ptr;
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| 80 | GL_CombinerParameteriNV_Func glCombinerParameteriNV_ptr;
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| 81 | GL_GetProgramivARB_Func glGetProgramivARB_ptr;
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| 82 | GL_LoadProgramNV_Func glLoadProgramNV_ptr;
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| 83 | GL_CombinerInputNV_Func glCombinerInputNV_ptr;
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| 84 | GL_CombinerOutputNV_Func glCombinerOutputNV_ptr;
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| 85 | GL_FinalCombinerInputNV_Func glFinalCombinerInputNV_ptr;
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| 86 | GL_TrackMatrixNV_Func glTrackMatrixNV_ptr;
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| 87 | PFNGLCOMPRESSEDTEXIMAGE1DARBPROC glCompressedTexImage1DARB_ptr;
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| 88 | PFNGLCOMPRESSEDTEXIMAGE2DARBPROC glCompressedTexImage2DARB_ptr;
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| 89 | PFNGLCOMPRESSEDTEXIMAGE3DARBPROC glCompressedTexImage3DARB_ptr;
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| 90 | PFNGLCOMPRESSEDTEXSUBIMAGE1DARBPROC glCompressedTexSubImage1DARB_ptr;
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| 91 | PFNGLCOMPRESSEDTEXSUBIMAGE2DARBPROC glCompressedTexSubImage2DARB_ptr;
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| 92 | PFNGLCOMPRESSEDTEXSUBIMAGE3DARBPROC glCompressedTexSubImage3DARB_ptr;
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| 93 | PFNGLGETCOMPRESSEDTEXIMAGEARBPROC glGetCompressedTexImageARB_ptr;
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| 94 | GL_ActiveStencilFaceEXT_Func glActiveStencilFaceEXT_ptr;
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| 95 | GL_GenOcclusionQueriesNV_Func glGenOcclusionQueriesNV_ptr;
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| 96 | GL_DeleteOcclusionQueriesNV_Func glDeleteOcclusionQueriesNV_ptr;
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| 97 | GL_BeginOcclusionQueryNV_Func glBeginOcclusionQueryNV_ptr;
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| 98 | GL_EndOcclusionQueryNV_Func glEndOcclusionQueryNV_ptr;
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| 99 | GL_GetOcclusionQueryuivNV_Func glGetOcclusionQueryuivNV_ptr;
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| 100 | GL_GenQueriesARB_Func glGenQueriesARB_ptr;
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| 101 | GL_DeleteQueriesARB_Func glDeleteQueriesARB_ptr;
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| 102 | GL_BeginQueryARB_Func glBeginQueryARB_ptr;
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| 103 | GL_EndQueryARB_Func glEndQueryARB_ptr;
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[115] | 104 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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[97] | 105 | GL_GetQueryivARB_Func glGetQueryivARB_ptr;
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| 106 | GL_GetQueryObjectivARB_Func glGetQueryObjectivARB_ptr;
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[115] | 107 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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[97] | 108 | GL_GetQueryObjectuivARB_Func glGetQueryObjectuivARB_ptr;
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| 109 |
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| 110 | namespace Ogre {
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| 111 |
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| 112 | // Callback function used when registering GLGpuPrograms
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| 113 | GpuProgram* createGLArbGpuProgram(ResourceManager* creator,
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| 114 | const String& name, ResourceHandle handle,
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| 115 | const String& group, bool isManual, ManualResourceLoader* loader,
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| 116 | GpuProgramType gptype, const String& syntaxCode)
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| 117 | {
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| 118 | GLArbGpuProgram* ret = new GLArbGpuProgram(
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| 119 | creator, name, handle, group, isManual, loader);
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| 120 | ret->setType(gptype);
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| 121 | ret->setSyntaxCode(syntaxCode);
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| 122 | return ret;
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| 123 | }
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| 124 |
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| 125 | GpuProgram* createGLGpuNvparseProgram(ResourceManager* creator,
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| 126 | const String& name, ResourceHandle handle,
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| 127 | const String& group, bool isManual, ManualResourceLoader* loader,
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| 128 | GpuProgramType gptype, const String& syntaxCode)
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| 129 | {
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| 130 | GLGpuNvparseProgram* ret = new GLGpuNvparseProgram(
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| 131 | creator, name, handle, group, isManual, loader);
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| 132 | ret->setType(gptype);
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| 133 | ret->setSyntaxCode(syntaxCode);
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| 134 | return ret;
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| 135 | }
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| 136 |
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| 137 | GpuProgram* createGL_ATI_FS_GpuProgram(ResourceManager* creator,
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| 138 | const String& name, ResourceHandle handle,
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| 139 | const String& group, bool isManual, ManualResourceLoader* loader,
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| 140 | GpuProgramType gptype, const String& syntaxCode)
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| 141 | {
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| 142 |
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| 143 | ATI_FS_GLGpuProgram* ret = new ATI_FS_GLGpuProgram(
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| 144 | creator, name, handle, group, isManual, loader);
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| 145 | ret->setType(gptype);
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| 146 | ret->setSyntaxCode(syntaxCode);
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| 147 | return ret;
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| 148 | }
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| 149 |
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| 150 | GLRenderSystem::GLRenderSystem()
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[193] | 151 | : mDepthWrite(true), mHardwareBufferManager(0),
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[97] | 152 | mGpuProgramManager(0)
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| 153 | {
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| 154 | size_t i;
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| 155 |
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| 156 | OgreGuard( "GLRenderSystem::GLRenderSystem" );
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| 157 |
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| 158 | LogManager::getSingleton().logMessage(getName() + " created.");
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| 159 |
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| 160 | // Get our GLSupport
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| 161 | mGLSupport = getGLSupport();
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| 162 |
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| 163 | for( i=0; i<MAX_LIGHTS; i++ )
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| 164 | mLights[i] = NULL;
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| 165 |
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| 166 | mWorldMatrix = Matrix4::IDENTITY;
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| 167 | mViewMatrix = Matrix4::IDENTITY;
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| 168 |
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| 169 | initConfigOptions();
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| 170 |
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| 171 | mColourWrite[0] = mColourWrite[1] = mColourWrite[2] = mColourWrite[3] = true;
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| 172 |
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| 173 | for (i = 0; i < OGRE_MAX_TEXTURE_COORD_SETS; i++)
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| 174 | {
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[193] | 175 | // Dummy value
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| 176 | mTextureCoordIndex[i] = 99;
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[97] | 177 | }
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| 178 |
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| 179 | for (i = 0; i < OGRE_MAX_TEXTURE_LAYERS; i++)
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| 180 | {
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| 181 | mTextureTypes[i] = 0;
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| 182 | }
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| 183 |
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| 184 | mActiveRenderTarget = 0;
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| 185 | mCurrentContext = 0;
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| 186 | mMainContext = 0;
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| 187 |
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| 188 | mGLInitialized = false;
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| 189 |
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| 190 | glActiveTextureARB_ptr = 0;
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| 191 | glClientActiveTextureARB_ptr = 0;
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| 192 | glSecondaryColorPointerEXT_ptr = 0;
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[115] | 193 | glSecondaryColor3fEXT_ptr = 0;
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[97] | 194 | glGenBuffersARB_ptr = 0;
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| 195 | glBindBufferARB_ptr = 0;
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| 196 | glDeleteBuffersARB_ptr = 0;
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| 197 | glMapBufferARB_ptr = 0;
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| 198 | glUnmapBufferARB_ptr = 0;
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| 199 | glBufferDataARB_ptr = 0;
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| 200 | glBufferSubDataARB_ptr = 0;
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| 201 | glGetBufferSubDataARB_ptr = 0;
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| 202 | glGenProgramsARB_ptr = 0;
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| 203 | glDeleteProgramsARB_ptr = 0;
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| 204 | glBindProgramARB_ptr = 0;
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| 205 | glProgramStringARB_ptr = 0;
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| 206 | glProgramLocalParameter4fvARB_ptr = 0;
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| 207 | glProgramParameter4fvNV_ptr = 0;
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| 208 | glCombinerStageParameterfvNV_ptr = 0;
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| 209 | glCombinerParameterfvNV_ptr = 0;
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| 210 | glCombinerParameteriNV_ptr = 0;
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| 211 | glGetProgramivARB_ptr = 0;
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| 212 | glLoadProgramNV_ptr = 0;
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| 213 | glCombinerInputNV_ptr = 0;
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| 214 | glCombinerOutputNV_ptr = 0;
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| 215 | glFinalCombinerInputNV_ptr = 0;
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| 216 | glTrackMatrixNV_ptr = 0;
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| 217 | glActiveStencilFaceEXT_ptr = 0;
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| 218 | glGenOcclusionQueriesNV_ptr = 0;
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| 219 | glDeleteOcclusionQueriesNV_ptr = 0;
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| 220 | glBeginOcclusionQueryNV_ptr = 0;
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| 221 | glEndOcclusionQueryNV_ptr = 0;
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| 222 | glGetOcclusionQueryuivNV_ptr = 0;
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| 223 | glGenQueriesARB_ptr = 0;
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| 224 | glDeleteQueriesARB_ptr = 0;
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| 225 | glBeginQueryARB_ptr = 0;
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| 226 | glEndQueryARB_ptr = 0;
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[115] | 227 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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[97] | 228 | glGetQueryivARB_ptr = 0;
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| 229 | glGetQueryObjectivARB_ptr = 0;
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[115] | 230 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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[97] | 231 | glGetQueryObjectuivARB_ptr = 0;
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| 232 |
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| 233 | mCurrentLights = 0;
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| 234 | mMinFilter = FO_LINEAR;
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| 235 | mMipFilter = FO_POINT;
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| 236 | mCurrentVertexProgram = 0;
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| 237 | mCurrentFragmentProgram = 0;
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| 238 |
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| 239 | mClipPlanes.reserve(6);
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| 240 |
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| 241 | OgreUnguard();
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| 242 | }
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| 243 |
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| 244 | GLRenderSystem::~GLRenderSystem()
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| 245 | {
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| 246 | shutdown();
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| 247 |
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| 248 | // Destroy render windows
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| 249 | RenderTargetMap::iterator i;
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| 250 | for (i = mRenderTargets.begin(); i != mRenderTargets.end(); ++i)
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| 251 | {
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| 252 | delete i->second;
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| 253 | }
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| 254 | mRenderTargets.clear();
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| 255 |
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| 256 | if (mTextureManager)
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| 257 | delete mTextureManager;
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| 258 |
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| 259 | delete mCapabilities;
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| 260 | delete mGLSupport;
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| 261 | }
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| 262 |
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| 263 | const String& GLRenderSystem::getName(void) const
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| 264 | {
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| 265 | static String strName("OpenGL Rendering Subsystem");
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| 266 | return strName;
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| 267 | }
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| 268 |
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| 269 | void GLRenderSystem::initConfigOptions(void)
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| 270 | {
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| 271 | OgreGuard("GLRenderSystem::initConfigOptions");
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| 272 | mGLSupport->addConfig();
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| 273 | OgreUnguard();
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| 274 | }
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| 275 |
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| 276 | ConfigOptionMap& GLRenderSystem::getConfigOptions(void)
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| 277 | {
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| 278 | return mGLSupport->getConfigOptions();
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| 279 | }
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| 280 |
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| 281 | void GLRenderSystem::setConfigOption(const String &name, const String &value)
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| 282 | {
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[343] | 283 | // set occlusion query
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| 284 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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| 285 | if ( name == "ArbQueries" )
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| 286 | {
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| 287 | if ( value == "No" )
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| 288 | {
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| 289 | GLHardwareOcclusionQuery::sUseArbQueries = false;
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| 290 | }
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| 291 | else if ( value == "Yes" )
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| 292 | {
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| 293 | GLHardwareOcclusionQuery::sUseArbQueries = true;
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| 294 | }
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| 295 | return;
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| 296 | }
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| 297 | #endif
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| 298 |
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[97] | 299 | mGLSupport->setConfigOption(name, value);
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| 300 | }
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| 301 |
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| 302 | String GLRenderSystem::validateConfigOptions(void)
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| 303 | {
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| 304 | // XXX Return an error string if something is invalid
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| 305 | return mGLSupport->validateConfig();
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| 306 | }
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| 307 |
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| 308 | RenderWindow* GLRenderSystem::initialise(bool autoCreateWindow, const String& windowTitle)
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| 309 | {
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| 310 | mGLSupport->start();
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| 311 |
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| 312 | RenderWindow* autoWindow = mGLSupport->createWindow(autoCreateWindow, this, windowTitle);
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| 313 |
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| 314 |
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| 315 | _setCullingMode( mCullingMode );
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| 316 |
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| 317 | return autoWindow;
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| 318 | }
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| 319 |
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| 320 | void GLRenderSystem::initGL(void)
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| 321 | {
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| 322 | mGLSupport->initialiseExtensions();
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| 323 |
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| 324 | LogManager::getSingleton().logMessage(
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| 325 | "***************************\n"
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| 326 | "*** GL Renderer Started ***\n"
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| 327 | "***************************");
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| 328 |
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| 329 |
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| 330 | // Check for hardware mipmapping support.
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| 331 | // Note: This is disabled for ATI cards until they fix their drivers
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| 332 | if(mGLSupport->getGLVendor() != "ATI" &&
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| 333 | (mGLSupport->checkMinGLVersion("1.4.0") ||
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| 334 | mGLSupport->checkExtension("GL_SGIS_generate_mipmap")))
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| 335 | {
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| 336 | mCapabilities->setCapability(RSC_AUTOMIPMAP);
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| 337 | }
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| 338 |
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| 339 | // Check for blending support
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| 340 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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| 341 | mGLSupport->checkExtension("GL_ARB_texture_env_combine") ||
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| 342 | mGLSupport->checkExtension("GL_EXT_texture_env_combine"))
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| 343 | {
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| 344 | mCapabilities->setCapability(RSC_BLENDING);
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| 345 | }
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| 346 |
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| 347 | // Check for Multitexturing support and set number of texture units
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| 348 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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| 349 | mGLSupport->checkExtension("GL_ARB_multitexture"))
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| 350 | {
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| 351 | GLint units;
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| 352 | glGetIntegerv( GL_MAX_TEXTURE_UNITS, &units );
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[193] | 353 | mFixedFunctionTextureUnits = units;
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[97] | 354 |
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[193] | 355 | if (mGLSupport->checkExtension("GL_ARB_fragment_program"))
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| 356 | {
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| 357 | // Also check GL_MAX_TEXTURE_IMAGE_UNITS_ARB since NV at least
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| 358 | // only increased this on the FX/6x00 series
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| 359 | GLint arbUnits;
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| 360 | glGetIntegerv( GL_MAX_TEXTURE_IMAGE_UNITS_ARB, &arbUnits );
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| 361 | if (arbUnits > units)
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| 362 | units = arbUnits;
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| 363 | }
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| 364 |
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[97] | 365 | mCapabilities->setNumTextureUnits(units);
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[193] | 366 |
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[97] | 367 | }
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| 368 | else
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| 369 | {
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| 370 | // If no multitexture support then set one texture unit
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| 371 | mCapabilities->setNumTextureUnits(1);
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| 372 | }
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| 373 |
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| 374 | // Check for Anisotropy support
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| 375 | if(mGLSupport->checkExtension("GL_EXT_texture_filter_anisotropic"))
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| 376 | {
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| 377 | mCapabilities->setCapability(RSC_ANISOTROPY);
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| 378 | }
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| 379 |
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| 380 | // Check for DOT3 support
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| 381 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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| 382 | mGLSupport->checkExtension("GL_ARB_texture_env_dot3") ||
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| 383 | mGLSupport->checkExtension("GL_EXT_texture_env_dot3"))
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| 384 | {
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| 385 | mCapabilities->setCapability(RSC_DOT3);
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| 386 | }
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| 387 |
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| 388 | // Check for cube mapping
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| 389 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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| 390 | mGLSupport->checkExtension("GL_ARB_texture_cube_map") ||
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| 391 | mGLSupport->checkExtension("GL_EXT_texture_cube_map"))
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| 392 | {
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| 393 | mCapabilities->setCapability(RSC_CUBEMAPPING);
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| 394 | }
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| 395 |
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| 396 | // Check for hardware stencil support and set bit depth
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| 397 | GLint stencil;
|
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| 398 | glGetIntegerv(GL_STENCIL_BITS,&stencil);
|
---|
| 399 |
|
---|
| 400 | if(stencil)
|
---|
| 401 | {
|
---|
| 402 | mCapabilities->setCapability(RSC_HWSTENCIL);
|
---|
| 403 | mCapabilities->setStencilBufferBitDepth(stencil);
|
---|
| 404 | }
|
---|
| 405 |
|
---|
| 406 | // Check for VBO support
|
---|
| 407 | if(mGLSupport->checkExtension("GL_ARB_vertex_buffer_object"))
|
---|
| 408 | {
|
---|
| 409 | mCapabilities->setCapability(RSC_VBO);
|
---|
| 410 |
|
---|
| 411 | mHardwareBufferManager = new GLHardwareBufferManager;
|
---|
| 412 | }
|
---|
| 413 | else
|
---|
| 414 | {
|
---|
| 415 | mHardwareBufferManager = new GLDefaultHardwareBufferManager;
|
---|
| 416 | }
|
---|
| 417 |
|
---|
| 418 | // XXX Need to check for nv2 support and make a program manager for it
|
---|
| 419 | // XXX Probably nv1 as well for older cards
|
---|
| 420 | // GPU Program Manager setup
|
---|
| 421 | mGpuProgramManager = new GLGpuProgramManager();
|
---|
| 422 |
|
---|
| 423 | if(mGLSupport->checkExtension("GL_ARB_vertex_program"))
|
---|
| 424 | {
|
---|
| 425 | mCapabilities->setCapability(RSC_VERTEX_PROGRAM);
|
---|
| 426 |
|
---|
| 427 | // Vertex Program Properties
|
---|
| 428 | mCapabilities->setMaxVertexProgramVersion("arbvp1");
|
---|
| 429 | mCapabilities->setVertexProgramConstantBoolCount(0);
|
---|
| 430 | mCapabilities->setVertexProgramConstantIntCount(0);
|
---|
| 431 | mCapabilities->setVertexProgramConstantFloatCount(
|
---|
| 432 | GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB);
|
---|
| 433 |
|
---|
| 434 | mGpuProgramManager->_pushSyntaxCode("arbvp1");
|
---|
| 435 | mGpuProgramManager->registerProgramFactory("arbvp1", createGLArbGpuProgram);
|
---|
[193] | 436 | if (mGLSupport->checkExtension("GL_NV_vertex_program2_option"))
|
---|
| 437 | {
|
---|
| 438 | mCapabilities->setMaxVertexProgramVersion("vp30");
|
---|
| 439 | mGpuProgramManager->_pushSyntaxCode("vp30");
|
---|
| 440 | mGpuProgramManager->registerProgramFactory("vp30", createGLArbGpuProgram);
|
---|
| 441 | }
|
---|
| 442 |
|
---|
| 443 | if (mGLSupport->checkExtension("GL_NV_vertex_program3"))
|
---|
| 444 | {
|
---|
| 445 | mCapabilities->setMaxVertexProgramVersion("vp40");
|
---|
| 446 | mGpuProgramManager->_pushSyntaxCode("vp40");
|
---|
| 447 | mGpuProgramManager->registerProgramFactory("vp40", createGLArbGpuProgram);
|
---|
| 448 | }
|
---|
[97] | 449 | }
|
---|
| 450 |
|
---|
| 451 | if (mGLSupport->checkExtension("GL_NV_register_combiners2") &&
|
---|
| 452 | mGLSupport->checkExtension("GL_NV_texture_shader"))
|
---|
| 453 | {
|
---|
| 454 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
| 455 | mCapabilities->setMaxFragmentProgramVersion("fp20");
|
---|
| 456 |
|
---|
| 457 | mGpuProgramManager->_pushSyntaxCode("fp20");
|
---|
| 458 | mGpuProgramManager->registerProgramFactory("fp20", createGLGpuNvparseProgram);
|
---|
| 459 | }
|
---|
| 460 |
|
---|
| 461 |
|
---|
| 462 | // NFZ - check for ATI fragment shader support
|
---|
| 463 | if (mGLSupport->checkExtension("GL_ATI_fragment_shader"))
|
---|
| 464 | {
|
---|
| 465 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
| 466 | mCapabilities->setMaxFragmentProgramVersion("ps_1_4");
|
---|
| 467 | // no boolean params allowed
|
---|
| 468 | mCapabilities->setFragmentProgramConstantBoolCount(0);
|
---|
| 469 | // no integer params allowed
|
---|
| 470 | mCapabilities->setFragmentProgramConstantIntCount(0);
|
---|
| 471 |
|
---|
| 472 | // only 8 Vector4 constant floats supported
|
---|
| 473 | mCapabilities->setFragmentProgramConstantFloatCount(8);
|
---|
| 474 |
|
---|
| 475 | mGpuProgramManager->_pushSyntaxCode("ps_1_4");
|
---|
| 476 | mGpuProgramManager->_pushSyntaxCode("ps_1_3");
|
---|
| 477 | mGpuProgramManager->_pushSyntaxCode("ps_1_2");
|
---|
| 478 | mGpuProgramManager->_pushSyntaxCode("ps_1_1");
|
---|
| 479 |
|
---|
| 480 | mGpuProgramManager->registerProgramFactory("ps_1_4", createGL_ATI_FS_GpuProgram);
|
---|
| 481 | mGpuProgramManager->registerProgramFactory("ps_1_3", createGL_ATI_FS_GpuProgram);
|
---|
| 482 | mGpuProgramManager->registerProgramFactory("ps_1_2", createGL_ATI_FS_GpuProgram);
|
---|
| 483 | mGpuProgramManager->registerProgramFactory("ps_1_1", createGL_ATI_FS_GpuProgram);
|
---|
| 484 | }
|
---|
| 485 |
|
---|
| 486 |
|
---|
| 487 | if (mGLSupport->checkExtension("GL_ARB_fragment_program"))
|
---|
| 488 | {
|
---|
| 489 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
| 490 | // Fragment Program Properties
|
---|
| 491 | mCapabilities->setMaxFragmentProgramVersion("arbfp1");
|
---|
| 492 | mCapabilities->setFragmentProgramConstantBoolCount(0);
|
---|
| 493 | mCapabilities->setFragmentProgramConstantIntCount(0);
|
---|
| 494 | mCapabilities->setFragmentProgramConstantFloatCount(
|
---|
| 495 | GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB);
|
---|
| 496 |
|
---|
| 497 | mGpuProgramManager->_pushSyntaxCode("arbfp1");
|
---|
| 498 | mGpuProgramManager->registerProgramFactory("arbfp1", createGLArbGpuProgram);
|
---|
[193] | 499 | if (mGLSupport->checkExtension("GL_NV_fragment_program_option"))
|
---|
| 500 | {
|
---|
| 501 | mCapabilities->setMaxFragmentProgramVersion("fp30");
|
---|
| 502 | mGpuProgramManager->_pushSyntaxCode("fp30");
|
---|
| 503 | mGpuProgramManager->registerProgramFactory("fp30", createGLArbGpuProgram);
|
---|
| 504 | }
|
---|
| 505 |
|
---|
| 506 | if (mGLSupport->checkExtension("GL_NV_fragment_program2"))
|
---|
| 507 | {
|
---|
| 508 | mCapabilities->setMaxFragmentProgramVersion("fp40");
|
---|
| 509 | mGpuProgramManager->_pushSyntaxCode("fp40");
|
---|
| 510 | mGpuProgramManager->registerProgramFactory("fp40", createGLArbGpuProgram);
|
---|
| 511 | }
|
---|
[97] | 512 | }
|
---|
| 513 |
|
---|
| 514 | // NFZ - check if GLSL is supported
|
---|
| 515 | if ( mGLSupport->checkExtension("GL_ARB_shading_language_100") &&
|
---|
| 516 | mGLSupport->checkExtension("GL_ARB_shader_objects") &&
|
---|
| 517 | mGLSupport->checkExtension("GL_ARB_fragment_shader") &&
|
---|
| 518 | mGLSupport->checkExtension("GL_ARB_vertex_shader") )
|
---|
| 519 | {
|
---|
| 520 | // NFZ - check for GLSL vertex and fragment shader support successful
|
---|
| 521 | mGpuProgramManager->_pushSyntaxCode("glsl");
|
---|
| 522 | LogManager::getSingleton().logMessage("GLSL support detected");
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | // Check for texture compression
|
---|
| 526 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
| 527 | mGLSupport->checkExtension("GL_ARB_texture_compression"))
|
---|
| 528 | {
|
---|
| 529 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION);
|
---|
| 530 |
|
---|
| 531 | // Check for dxt compression
|
---|
| 532 | if(mGLSupport->checkExtension("GL_EXT_texture_compression_s3tc"))
|
---|
| 533 | {
|
---|
| 534 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION_DXT);
|
---|
| 535 | }
|
---|
| 536 | // Check for vtc compression
|
---|
| 537 | if(mGLSupport->checkExtension("GL_NV_texture_compression_vtc"))
|
---|
| 538 | {
|
---|
| 539 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION_VTC);
|
---|
| 540 | }
|
---|
| 541 | }
|
---|
| 542 |
|
---|
| 543 | // Scissor test is standard in GL 1.2 (is it emulated on some cards though?)
|
---|
| 544 | mCapabilities->setCapability(RSC_SCISSOR_TEST);
|
---|
| 545 | // As are user clipping planes
|
---|
| 546 | mCapabilities->setCapability(RSC_USER_CLIP_PLANES);
|
---|
| 547 |
|
---|
| 548 | // 2-sided stencil?
|
---|
| 549 | if (mGLSupport->checkExtension("GL_EXT_stencil_two_side"))
|
---|
| 550 | {
|
---|
| 551 | mCapabilities->setCapability(RSC_TWO_SIDED_STENCIL);
|
---|
| 552 | }
|
---|
| 553 | // stencil wrapping?
|
---|
| 554 | if (mGLSupport->checkExtension("GL_EXT_stencil_wrap"))
|
---|
| 555 | {
|
---|
| 556 | mCapabilities->setCapability(RSC_STENCIL_WRAP);
|
---|
| 557 | }
|
---|
| 558 |
|
---|
| 559 | // Check for hardware occlusion support
|
---|
| 560 | if(mGLSupport->checkExtension("GL_NV_occlusion_query"))
|
---|
| 561 | {
|
---|
| 562 | mCapabilities->setCapability(RSC_HWOCCLUSION);
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 | // UBYTE4 always supported
|
---|
| 566 | mCapabilities->setCapability(RSC_VERTEX_FORMAT_UBYTE4);
|
---|
| 567 |
|
---|
| 568 | // Inifinite far plane always supported
|
---|
| 569 | mCapabilities->setCapability(RSC_INFINITE_FAR_PLANE);
|
---|
| 570 |
|
---|
| 571 | // Check for non-power-of-2 texture support
|
---|
| 572 | if(mGLSupport->checkExtension("GL_ARB_texture_non_power_of_two"))
|
---|
| 573 | {
|
---|
| 574 | mCapabilities->setCapability(RSC_NON_POWER_OF_2_TEXTURES);
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | // Check for Float textures
|
---|
| 578 | if(mGLSupport->checkExtension("GL_ATI_texture_float") ||
|
---|
| 579 | // mGLSupport->checkExtension("GL_NV_float_buffer") ||
|
---|
| 580 | mGLSupport->checkExtension("GL_ARB_texture_float"))
|
---|
| 581 | {
|
---|
| 582 | mCapabilities->setCapability(RSC_TEXTURE_FLOAT);
|
---|
| 583 | }
|
---|
| 584 |
|
---|
| 585 | // 3D textures should be supported by GL 1.2, which is our minimum version
|
---|
| 586 | mCapabilities->setCapability(RSC_TEXTURE_3D);
|
---|
| 587 |
|
---|
| 588 | // Check for GLSupport specific extensions
|
---|
| 589 | mGLSupport->initialiseCapabilities(*mCapabilities);
|
---|
| 590 |
|
---|
| 591 | // Get extension function pointers
|
---|
| 592 | glActiveTextureARB_ptr =
|
---|
| 593 | (GL_ActiveTextureARB_Func)mGLSupport->getProcAddress("glActiveTextureARB");
|
---|
| 594 | glClientActiveTextureARB_ptr =
|
---|
| 595 | (GL_ClientActiveTextureARB_Func)mGLSupport->getProcAddress("glClientActiveTextureARB");
|
---|
| 596 | glSecondaryColorPointerEXT_ptr =
|
---|
| 597 | (GL_SecondaryColorPointerEXT_Func)mGLSupport->getProcAddress("glSecondaryColorPointerEXT");
|
---|
[115] | 598 | glSecondaryColor3fEXT_ptr =
|
---|
| 599 | (GL_SecondaryColor3fEXT_Func)mGLSupport->getProcAddress("glSecondaryColor3fEXT");
|
---|
[97] | 600 | glGenBuffersARB_ptr =
|
---|
| 601 | (GL_GenBuffersARB_Func)mGLSupport->getProcAddress("glGenBuffersARB");
|
---|
| 602 | glBindBufferARB_ptr =
|
---|
| 603 | (GL_BindBufferARB_Func)mGLSupport->getProcAddress("glBindBufferARB");
|
---|
| 604 | glDeleteBuffersARB_ptr =
|
---|
| 605 | (GL_DeleteBuffersARB_Func)mGLSupport->getProcAddress("glDeleteBuffersARB");
|
---|
| 606 | glMapBufferARB_ptr =
|
---|
| 607 | (GL_MapBufferARB_Func)mGLSupport->getProcAddress("glMapBufferARB");
|
---|
| 608 | glUnmapBufferARB_ptr =
|
---|
| 609 | (GL_UnmapBufferARB_Func)mGLSupport->getProcAddress("glUnmapBufferARB");
|
---|
| 610 | glBufferDataARB_ptr =
|
---|
| 611 | (GL_BufferDataARB_Func)mGLSupport->getProcAddress("glBufferDataARB");
|
---|
| 612 | glBufferSubDataARB_ptr =
|
---|
| 613 | (GL_BufferSubDataARB_Func)mGLSupport->getProcAddress("glBufferSubDataARB");
|
---|
| 614 | glGetBufferSubDataARB_ptr =
|
---|
| 615 | (GL_GetBufferSubDataARB_Func)mGLSupport->getProcAddress("glGetBufferSubDataARB");
|
---|
| 616 | glGenProgramsARB_ptr =
|
---|
| 617 | (GL_GenProgramsARB_Func)mGLSupport->getProcAddress("glGenProgramsARB");
|
---|
| 618 | glDeleteProgramsARB_ptr =
|
---|
| 619 | (GL_DeleteProgramsARB_Func)mGLSupport->getProcAddress("glDeleteProgramsARB");
|
---|
| 620 | glBindProgramARB_ptr =
|
---|
| 621 | (GL_BindProgramARB_Func)mGLSupport->getProcAddress("glBindProgramARB");
|
---|
| 622 | glProgramStringARB_ptr =
|
---|
| 623 | (GL_ProgramStringARB_Func)mGLSupport->getProcAddress("glProgramStringARB");
|
---|
| 624 | glProgramLocalParameter4fvARB_ptr =
|
---|
| 625 | (GL_ProgramLocalParameter4fvARB_Func)mGLSupport->getProcAddress("glProgramLocalParameter4fvARB");
|
---|
| 626 | glProgramParameter4fvNV_ptr =
|
---|
| 627 | (GL_ProgramParameter4fvNV_Func)mGLSupport->getProcAddress("glProgramParameter4fvNV");
|
---|
| 628 | glVertexAttribPointerARB_ptr =
|
---|
| 629 | (GL_VertexAttribPointerARB_Func)mGLSupport->getProcAddress("glVertexAttribPointerARB");
|
---|
| 630 | glEnableVertexAttribArrayARB_ptr =
|
---|
| 631 | (GL_EnableVertexAttribArrayARB_Func)mGLSupport->getProcAddress("glEnableVertexAttribArrayARB");
|
---|
| 632 | glDisableVertexAttribArrayARB_ptr =
|
---|
| 633 | (GL_DisableVertexAttribArrayARB_Func)mGLSupport->getProcAddress("glDisableVertexAttribArrayARB");
|
---|
| 634 | glCombinerStageParameterfvNV_ptr =
|
---|
| 635 | (GL_CombinerStageParameterfvNV_Func)mGLSupport->getProcAddress("glCombinerStageParameterfvNV");
|
---|
| 636 | glCombinerParameterfvNV_ptr =
|
---|
| 637 | (GL_CombinerParameterfvNV_Func)mGLSupport->getProcAddress("glCombinerParameterfvNV");
|
---|
| 638 | glCombinerParameteriNV_ptr = (GL_CombinerParameteriNV_Func)mGLSupport->getProcAddress("glCombinerParameteriNV");
|
---|
| 639 | glGetProgramivARB_ptr =
|
---|
| 640 | (GL_GetProgramivARB_Func)mGLSupport->getProcAddress("glGetProgramivARB");
|
---|
| 641 | glLoadProgramNV_ptr =
|
---|
| 642 | (GL_LoadProgramNV_Func)mGLSupport->getProcAddress("glLoadProgramNV");
|
---|
| 643 | glCombinerInputNV_ptr =
|
---|
| 644 | (GL_CombinerInputNV_Func)mGLSupport->getProcAddress("glCombinerInputNV");
|
---|
| 645 | glCombinerOutputNV_ptr =
|
---|
| 646 | (GL_CombinerOutputNV_Func)mGLSupport->getProcAddress("glCombinerOutputNV");
|
---|
| 647 | glFinalCombinerInputNV_ptr =
|
---|
| 648 | (GL_FinalCombinerInputNV_Func)mGLSupport->getProcAddress("glFinalCombinerInputNV");
|
---|
| 649 | glTrackMatrixNV_ptr =
|
---|
| 650 | (GL_TrackMatrixNV_Func)mGLSupport->getProcAddress("glTrackMatrixNV");
|
---|
| 651 | glCompressedTexImage1DARB_ptr =
|
---|
| 652 | (PFNGLCOMPRESSEDTEXIMAGE1DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage1DARB");
|
---|
| 653 | glCompressedTexImage2DARB_ptr =
|
---|
| 654 | (PFNGLCOMPRESSEDTEXIMAGE2DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage2DARB");
|
---|
| 655 | glCompressedTexImage3DARB_ptr =
|
---|
| 656 | (PFNGLCOMPRESSEDTEXIMAGE3DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage3DARB");
|
---|
| 657 | glCompressedTexSubImage1DARB_ptr =
|
---|
| 658 | (PFNGLCOMPRESSEDTEXSUBIMAGE1DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage1DARB");
|
---|
| 659 | glCompressedTexSubImage2DARB_ptr =
|
---|
| 660 | (PFNGLCOMPRESSEDTEXSUBIMAGE2DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage2DARB");
|
---|
| 661 | glCompressedTexSubImage3DARB_ptr =
|
---|
| 662 | (PFNGLCOMPRESSEDTEXSUBIMAGE3DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage3DARB");
|
---|
| 663 | glGetCompressedTexImageARB_ptr =
|
---|
| 664 | (PFNGLGETCOMPRESSEDTEXIMAGEARBPROC)mGLSupport->getProcAddress("glGetCompressedTexImageARB");
|
---|
| 665 | InitATIFragmentShaderExtensions(*mGLSupport);
|
---|
| 666 | InitGLShaderLanguageExtensions(*mGLSupport);
|
---|
| 667 | glActiveStencilFaceEXT_ptr =
|
---|
| 668 | (GL_ActiveStencilFaceEXT_Func)mGLSupport->getProcAddress("glActiveStencilFaceEXT");
|
---|
| 669 | glGenOcclusionQueriesNV_ptr =
|
---|
| 670 | (GL_GenOcclusionQueriesNV_Func)mGLSupport->getProcAddress("glGenOcclusionQueriesNV");
|
---|
| 671 | glDeleteOcclusionQueriesNV_ptr =
|
---|
| 672 | (GL_DeleteOcclusionQueriesNV_Func)mGLSupport->getProcAddress("glDeleteOcclusionQueriesNV");
|
---|
| 673 | glBeginOcclusionQueryNV_ptr =
|
---|
| 674 | (GL_BeginOcclusionQueryNV_Func)mGLSupport->getProcAddress("glBeginOcclusionQueryNV");
|
---|
| 675 | glEndOcclusionQueryNV_ptr =
|
---|
| 676 | (GL_EndOcclusionQueryNV_Func)mGLSupport->getProcAddress("glEndOcclusionQueryNV");
|
---|
| 677 | glGetOcclusionQueryuivNV_ptr =
|
---|
| 678 | (GL_GetOcclusionQueryuivNV_Func)mGLSupport->getProcAddress("glGetOcclusionQueryuivNV");
|
---|
[115] | 679 |
|
---|
[97] | 680 | glGenQueriesARB_ptr =
|
---|
| 681 | (GL_GenQueriesARB_Func)mGLSupport->getProcAddress("glGenQueriesARB");
|
---|
| 682 | glDeleteQueriesARB_ptr =
|
---|
| 683 | (GL_DeleteQueriesARB_Func)mGLSupport->getProcAddress("glDeleteQueriesARB");
|
---|
| 684 | glBeginQueryARB_ptr =
|
---|
| 685 | (GL_BeginQueryARB_Func)mGLSupport->getProcAddress("glBeginQueryARB");
|
---|
| 686 | glEndQueryARB_ptr =
|
---|
| 687 | (GL_EndQueryARB_Func)mGLSupport->getProcAddress("glEndQueryARB");
|
---|
[115] | 688 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 689 | glGetQueryivARB_ptr =
|
---|
| 690 | (GL_GetQueryivARB_Func)mGLSupport->getProcAddress("glGetQueryivARB");
|
---|
| 691 | glGetQueryObjectivARB_ptr =
|
---|
| 692 | (GL_GetQueryObjectivARB_Func)mGLSupport->getProcAddress("glGetQueryObjectivARB");
|
---|
[115] | 693 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 694 | glGetQueryObjectuivARB_ptr =
|
---|
| 695 | (GL_GetQueryObjectuivARB_Func)mGLSupport->getProcAddress("glGetQueryObjectuivARB");
|
---|
| 696 |
|
---|
| 697 | mCapabilities->log(LogManager::getSingleton().getDefaultLog());
|
---|
| 698 | mGLInitialized = true;
|
---|
| 699 | }
|
---|
| 700 |
|
---|
| 701 | void GLRenderSystem::reinitialise(void)
|
---|
| 702 | {
|
---|
| 703 | this->shutdown();
|
---|
| 704 | this->initialise(true);
|
---|
| 705 | }
|
---|
| 706 |
|
---|
| 707 | void GLRenderSystem::shutdown(void)
|
---|
| 708 | {
|
---|
| 709 | RenderSystem::shutdown();
|
---|
| 710 |
|
---|
| 711 | // Deleting the GPU program manager and hardware buffer manager. Has to be done before the mGLSupport->stop().
|
---|
| 712 | if (mGpuProgramManager)
|
---|
| 713 | {
|
---|
| 714 | delete mGpuProgramManager;
|
---|
| 715 | mGpuProgramManager = 0;
|
---|
| 716 | }
|
---|
| 717 |
|
---|
| 718 | if (mHardwareBufferManager)
|
---|
| 719 | {
|
---|
| 720 | delete mHardwareBufferManager;
|
---|
| 721 | mHardwareBufferManager = 0;
|
---|
| 722 | }
|
---|
| 723 |
|
---|
| 724 |
|
---|
| 725 | mGLSupport->stop();
|
---|
| 726 | mStopRendering = true;
|
---|
| 727 | }
|
---|
| 728 |
|
---|
| 729 | void GLRenderSystem::setAmbientLight(float r, float g, float b)
|
---|
| 730 | {
|
---|
| 731 | GLfloat lmodel_ambient[] = {r, g, b, 1.0};
|
---|
| 732 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
|
---|
| 733 | }
|
---|
| 734 |
|
---|
| 735 | void GLRenderSystem::setShadingType(ShadeOptions so)
|
---|
| 736 | {
|
---|
| 737 | switch(so)
|
---|
| 738 | {
|
---|
| 739 | case SO_FLAT:
|
---|
| 740 | glShadeModel(GL_FLAT);
|
---|
| 741 | break;
|
---|
| 742 | default:
|
---|
| 743 | glShadeModel(GL_SMOOTH);
|
---|
| 744 | break;
|
---|
| 745 | }
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 | RenderWindow* GLRenderSystem::createRenderWindow(const String &name,
|
---|
| 749 | unsigned int width, unsigned int height, bool fullScreen,
|
---|
| 750 | const NameValuePairList *miscParams)
|
---|
| 751 | {
|
---|
| 752 | if (mRenderTargets.find(name) != mRenderTargets.end())
|
---|
| 753 | {
|
---|
| 754 | OGRE_EXCEPT(
|
---|
| 755 | Exception::ERR_INVALIDPARAMS,
|
---|
| 756 | "Window with name '" + name + "' already exists",
|
---|
| 757 | "GLRenderSystem::createRenderWindow" );
|
---|
| 758 | }
|
---|
| 759 | // Log a message
|
---|
| 760 | std::stringstream ss;
|
---|
| 761 | ss << "GLRenderSystem::createRenderWindow \"" << name << "\", " <<
|
---|
| 762 | width << "x" << height << " ";
|
---|
| 763 | if(fullScreen)
|
---|
| 764 | ss << "fullscreen ";
|
---|
| 765 | else
|
---|
| 766 | ss << "windowed ";
|
---|
| 767 | if(miscParams)
|
---|
| 768 | {
|
---|
| 769 | ss << " miscParams: ";
|
---|
| 770 | NameValuePairList::const_iterator it;
|
---|
| 771 | for(it=miscParams->begin(); it!=miscParams->end(); ++it)
|
---|
| 772 | {
|
---|
| 773 | ss << it->first << "=" << it->second << " ";
|
---|
| 774 | }
|
---|
| 775 | LogManager::getSingleton().logMessage(ss.str());
|
---|
| 776 | }
|
---|
| 777 |
|
---|
| 778 | // Create the window
|
---|
| 779 | RenderWindow* win = mGLSupport->newWindow(name, width, height,
|
---|
| 780 | fullScreen, miscParams);
|
---|
| 781 |
|
---|
| 782 | attachRenderTarget( *win );
|
---|
| 783 |
|
---|
| 784 | if (!mGLInitialized)
|
---|
| 785 | {
|
---|
| 786 | // Initialise GL after the first window has been created
|
---|
| 787 | initGL();
|
---|
| 788 | mTextureManager = new GLTextureManager(*mGLSupport);
|
---|
| 789 | // Set main and current context
|
---|
| 790 | ContextMap::iterator i = mContextMap.find(win);
|
---|
| 791 | if(i != mContextMap.end()) {
|
---|
| 792 | mCurrentContext = i->second;
|
---|
| 793 | mMainContext = i->second;
|
---|
| 794 | mCurrentContext->setCurrent();
|
---|
| 795 | }
|
---|
| 796 | // Initialise the main context
|
---|
| 797 | _oneTimeContextInitialization();
|
---|
| 798 | }
|
---|
| 799 |
|
---|
| 800 |
|
---|
| 801 | // XXX Do more?
|
---|
| 802 |
|
---|
| 803 | return win;
|
---|
| 804 | }
|
---|
| 805 |
|
---|
| 806 | RenderTexture * GLRenderSystem::createRenderTexture( const String & name, unsigned int width, unsigned int height,
|
---|
| 807 | TextureType texType, PixelFormat internalFormat, const NameValuePairList *miscParams )
|
---|
| 808 | {
|
---|
| 809 | // Log a message
|
---|
| 810 | std::stringstream ss;
|
---|
| 811 | ss << "GLRenderSystem::createRenderTexture \"" << name << "\", " <<
|
---|
| 812 | width << "x" << height << " texType=" << texType <<
|
---|
| 813 | " internalFormat=" << PixelUtil::getFormatName(internalFormat) << " ";
|
---|
| 814 | if(miscParams)
|
---|
| 815 | {
|
---|
| 816 | ss << "miscParams: ";
|
---|
| 817 | NameValuePairList::const_iterator it;
|
---|
| 818 | for(it=miscParams->begin(); it!=miscParams->end(); ++it)
|
---|
| 819 | {
|
---|
| 820 | ss << it->first << "=" << it->second << " ";
|
---|
| 821 | }
|
---|
| 822 | LogManager::getSingleton().logMessage(ss.str());
|
---|
| 823 | }
|
---|
| 824 | // Pass on the create call
|
---|
| 825 | RenderTexture *rt = mGLSupport->createRenderTexture(name, width, height, texType, internalFormat, miscParams);
|
---|
| 826 | attachRenderTarget( *rt );
|
---|
| 827 | return rt;
|
---|
| 828 | }
|
---|
| 829 |
|
---|
| 830 | //-----------------------------------------------------------------------
|
---|
| 831 | void GLRenderSystem::destroyRenderWindow(RenderWindow* pWin)
|
---|
| 832 | {
|
---|
| 833 | // Find it to remove from list
|
---|
| 834 | RenderTargetMap::iterator i = mRenderTargets.begin();
|
---|
| 835 |
|
---|
| 836 | while (i != mRenderTargets.end())
|
---|
| 837 | {
|
---|
| 838 | if (i->second == pWin)
|
---|
| 839 | {
|
---|
| 840 | mRenderTargets.erase(i);
|
---|
| 841 | delete pWin;
|
---|
| 842 | break;
|
---|
| 843 | }
|
---|
| 844 | }
|
---|
| 845 | }
|
---|
| 846 |
|
---|
| 847 | //---------------------------------------------------------------------
|
---|
| 848 | void GLRenderSystem::_useLights(const LightList& lights, unsigned short limit)
|
---|
| 849 | {
|
---|
| 850 | // Save previous modelview
|
---|
| 851 | glMatrixMode(GL_MODELVIEW);
|
---|
| 852 | glPushMatrix();
|
---|
| 853 | // just load view matrix (identity world)
|
---|
| 854 | GLfloat mat[16];
|
---|
| 855 | makeGLMatrix(mat, mViewMatrix);
|
---|
| 856 | glLoadMatrixf(mat);
|
---|
| 857 |
|
---|
| 858 | LightList::const_iterator i, iend;
|
---|
| 859 | iend = lights.end();
|
---|
| 860 | unsigned short num = 0;
|
---|
| 861 | for (i = lights.begin(); i != iend && num < limit; ++i, ++num)
|
---|
| 862 | {
|
---|
| 863 | setGLLight(num, *i);
|
---|
| 864 | mLights[num] = *i;
|
---|
| 865 | }
|
---|
| 866 | // Disable extra lights
|
---|
| 867 | for (; num < mCurrentLights; ++num)
|
---|
| 868 | {
|
---|
| 869 | setGLLight(num, NULL);
|
---|
| 870 | mLights[num] = NULL;
|
---|
| 871 | }
|
---|
| 872 | mCurrentLights = std::min(limit, static_cast<unsigned short>(lights.size()));
|
---|
| 873 |
|
---|
| 874 | setLights();
|
---|
| 875 |
|
---|
| 876 | // restore previous
|
---|
| 877 | glPopMatrix();
|
---|
| 878 |
|
---|
| 879 | }
|
---|
| 880 |
|
---|
| 881 | void GLRenderSystem::setGLLight(size_t index, Light* lt)
|
---|
| 882 | {
|
---|
| 883 | GLenum gl_index = GL_LIGHT0 + index;
|
---|
| 884 |
|
---|
| 885 | if (!lt)
|
---|
| 886 | {
|
---|
| 887 | // Disable in the scene
|
---|
| 888 | glDisable(gl_index);
|
---|
| 889 | }
|
---|
| 890 | else
|
---|
| 891 | {
|
---|
| 892 | switch (lt->getType())
|
---|
| 893 | {
|
---|
| 894 | case Light::LT_SPOTLIGHT:
|
---|
| 895 | glLightf( gl_index, GL_SPOT_CUTOFF, 0.5f * lt->getSpotlightOuterAngle().valueDegrees() );
|
---|
| 896 | break;
|
---|
| 897 | default:
|
---|
| 898 | glLightf( gl_index, GL_SPOT_CUTOFF, 180.0 );
|
---|
| 899 | break;
|
---|
| 900 | }
|
---|
| 901 |
|
---|
| 902 | // Color
|
---|
| 903 | ColourValue col;
|
---|
| 904 | col = lt->getDiffuseColour();
|
---|
| 905 |
|
---|
| 906 |
|
---|
| 907 | GLfloat f4vals[4] = {col.r, col.g, col.b, col.a};
|
---|
| 908 | glLightfv(gl_index, GL_DIFFUSE, f4vals);
|
---|
| 909 |
|
---|
| 910 | col = lt->getSpecularColour();
|
---|
| 911 | f4vals[0] = col.r;
|
---|
| 912 | f4vals[1] = col.g;
|
---|
| 913 | f4vals[2] = col.b;
|
---|
| 914 | f4vals[3] = col.a;
|
---|
| 915 | glLightfv(gl_index, GL_SPECULAR, f4vals);
|
---|
| 916 |
|
---|
| 917 |
|
---|
| 918 | // Disable ambient light for movables;
|
---|
| 919 | f4vals[0] = 0;
|
---|
| 920 | f4vals[1] = 0;
|
---|
| 921 | f4vals[2] = 0;
|
---|
| 922 | f4vals[3] = 1;
|
---|
| 923 | glLightfv(gl_index, GL_AMBIENT, f4vals);
|
---|
| 924 |
|
---|
| 925 | setGLLightPositionDirection(lt, gl_index);
|
---|
| 926 |
|
---|
| 927 |
|
---|
| 928 | // Attenuation
|
---|
| 929 | glLightf(gl_index, GL_CONSTANT_ATTENUATION, lt->getAttenuationConstant());
|
---|
| 930 | glLightf(gl_index, GL_LINEAR_ATTENUATION, lt->getAttenuationLinear());
|
---|
| 931 | glLightf(gl_index, GL_QUADRATIC_ATTENUATION, lt->getAttenuationQuadric());
|
---|
| 932 | // Enable in the scene
|
---|
| 933 | glEnable(gl_index);
|
---|
| 934 |
|
---|
| 935 | }
|
---|
| 936 |
|
---|
| 937 | }
|
---|
| 938 |
|
---|
| 939 | //-----------------------------------------------------------------------------
|
---|
| 940 | void GLRenderSystem::makeGLMatrix(GLfloat gl_matrix[16], const Matrix4& m)
|
---|
| 941 | {
|
---|
| 942 | size_t x = 0;
|
---|
| 943 | for (size_t i = 0; i < 4; i++)
|
---|
| 944 | {
|
---|
| 945 | for (size_t j = 0; j < 4; j++)
|
---|
| 946 | {
|
---|
| 947 | gl_matrix[x] = m[j][i];
|
---|
| 948 | x++;
|
---|
| 949 | }
|
---|
| 950 | }
|
---|
| 951 | }
|
---|
| 952 | //-----------------------------------------------------------------------------
|
---|
| 953 | void GLRenderSystem::_setWorldMatrix( const Matrix4 &m )
|
---|
| 954 | {
|
---|
| 955 | GLfloat mat[16];
|
---|
| 956 | mWorldMatrix = m;
|
---|
| 957 | makeGLMatrix( mat, mViewMatrix * mWorldMatrix );
|
---|
| 958 | glMatrixMode(GL_MODELVIEW);
|
---|
| 959 | glLoadMatrixf(mat);
|
---|
| 960 | }
|
---|
| 961 |
|
---|
| 962 | //-----------------------------------------------------------------------------
|
---|
| 963 | void GLRenderSystem::_setViewMatrix( const Matrix4 &m )
|
---|
| 964 | {
|
---|
| 965 | mViewMatrix = m;
|
---|
| 966 |
|
---|
| 967 | GLfloat mat[16];
|
---|
[193] | 968 | makeGLMatrix( mat, mViewMatrix * mWorldMatrix );
|
---|
[97] | 969 | glMatrixMode(GL_MODELVIEW);
|
---|
| 970 | glLoadMatrixf(mat);
|
---|
| 971 |
|
---|
| 972 | setGLClipPlanes();
|
---|
| 973 | }
|
---|
| 974 | //-----------------------------------------------------------------------------
|
---|
| 975 | void GLRenderSystem::_setProjectionMatrix(const Matrix4 &m)
|
---|
| 976 | {
|
---|
| 977 | GLfloat mat[16];
|
---|
| 978 | makeGLMatrix(mat, m);
|
---|
| 979 | if (mActiveRenderTarget->requiresTextureFlipping())
|
---|
| 980 | {
|
---|
| 981 | // Invert y
|
---|
| 982 | mat[5] = -mat[5];
|
---|
| 983 | }
|
---|
| 984 | glMatrixMode(GL_PROJECTION);
|
---|
| 985 | glLoadMatrixf(mat);
|
---|
| 986 | glMatrixMode(GL_MODELVIEW);
|
---|
| 987 | }
|
---|
| 988 | //-----------------------------------------------------------------------------
|
---|
| 989 | void GLRenderSystem::_setSurfaceParams(const ColourValue &ambient,
|
---|
| 990 | const ColourValue &diffuse, const ColourValue &specular,
|
---|
| 991 | const ColourValue &emissive, Real shininess,
|
---|
| 992 | TrackVertexColourType tracking)
|
---|
| 993 | {
|
---|
| 994 | // XXX Cache previous values?
|
---|
| 995 | // XXX Front or Front and Back?
|
---|
| 996 |
|
---|
| 997 | GLfloat f4val[4] = {diffuse.r, diffuse.g, diffuse.b, diffuse.a};
|
---|
| 998 | glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, f4val);
|
---|
| 999 | f4val[0] = ambient.r;
|
---|
| 1000 | f4val[1] = ambient.g;
|
---|
| 1001 | f4val[2] = ambient.b;
|
---|
| 1002 | f4val[3] = ambient.a;
|
---|
| 1003 | glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, f4val);
|
---|
| 1004 | f4val[0] = specular.r;
|
---|
| 1005 | f4val[1] = specular.g;
|
---|
| 1006 | f4val[2] = specular.b;
|
---|
| 1007 | f4val[3] = specular.a;
|
---|
| 1008 | glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, f4val);
|
---|
| 1009 | f4val[0] = emissive.r;
|
---|
| 1010 | f4val[1] = emissive.g;
|
---|
| 1011 | f4val[2] = emissive.b;
|
---|
| 1012 | f4val[3] = emissive.a;
|
---|
| 1013 | glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, f4val);
|
---|
| 1014 | glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess);
|
---|
| 1015 |
|
---|
| 1016 | // Track vertex colour
|
---|
| 1017 | if(tracking != TVC_NONE)
|
---|
| 1018 | {
|
---|
| 1019 | GLenum gt = GL_DIFFUSE;
|
---|
| 1020 | // There are actually 15 different combinations for tracking, of which
|
---|
| 1021 | // GL only supports the most used 5. This means that we have to do some
|
---|
| 1022 | // magic to find the best match. NOTE:
|
---|
| 1023 | // GL_AMBIENT_AND_DIFFUSE != GL_AMBIENT | GL__DIFFUSE
|
---|
| 1024 | if(tracking & TVC_AMBIENT)
|
---|
| 1025 | {
|
---|
| 1026 | if(tracking & TVC_DIFFUSE)
|
---|
| 1027 | {
|
---|
| 1028 | gt = GL_AMBIENT_AND_DIFFUSE;
|
---|
| 1029 | }
|
---|
| 1030 | else
|
---|
| 1031 | {
|
---|
| 1032 | gt = GL_AMBIENT;
|
---|
| 1033 | }
|
---|
| 1034 | }
|
---|
| 1035 | else if(tracking & TVC_DIFFUSE)
|
---|
| 1036 | {
|
---|
| 1037 | gt = GL_DIFFUSE;
|
---|
| 1038 | }
|
---|
| 1039 | else if(tracking & TVC_SPECULAR)
|
---|
| 1040 | {
|
---|
| 1041 | gt = GL_SPECULAR;
|
---|
| 1042 | }
|
---|
| 1043 | else if(tracking & TVC_EMISSIVE)
|
---|
| 1044 | {
|
---|
| 1045 | gt = GL_EMISSION;
|
---|
| 1046 | }
|
---|
| 1047 | glColorMaterial(GL_FRONT_AND_BACK, gt);
|
---|
| 1048 |
|
---|
| 1049 | glEnable(GL_COLOR_MATERIAL);
|
---|
| 1050 | }
|
---|
| 1051 | else
|
---|
| 1052 | {
|
---|
| 1053 | glDisable(GL_COLOR_MATERIAL);
|
---|
| 1054 | }
|
---|
| 1055 | }
|
---|
| 1056 |
|
---|
| 1057 | //-----------------------------------------------------------------------------
|
---|
| 1058 | void GLRenderSystem::_setTexture(size_t stage, bool enabled, const String &texname)
|
---|
| 1059 | {
|
---|
| 1060 | GLTexturePtr tex = TextureManager::getSingleton().getByName(texname);
|
---|
| 1061 |
|
---|
| 1062 | GLenum lastTextureType = mTextureTypes[stage];
|
---|
| 1063 |
|
---|
| 1064 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
| 1065 | if (enabled)
|
---|
| 1066 | {
|
---|
| 1067 | if (!tex.isNull())
|
---|
| 1068 | {
|
---|
| 1069 | // note used
|
---|
| 1070 | tex->touch();
|
---|
| 1071 | mTextureTypes[stage] = tex->getGLTextureTarget();
|
---|
| 1072 | }
|
---|
| 1073 | else
|
---|
| 1074 | // assume 2D
|
---|
| 1075 | mTextureTypes[stage] = GL_TEXTURE_2D;
|
---|
| 1076 |
|
---|
| 1077 | if(lastTextureType != mTextureTypes[stage] && lastTextureType != 0)
|
---|
| 1078 | {
|
---|
[193] | 1079 | if (stage < mFixedFunctionTextureUnits)
|
---|
| 1080 | {
|
---|
[97] | 1081 | glDisable( lastTextureType );
|
---|
| 1082 | }
|
---|
[193] | 1083 | }
|
---|
[97] | 1084 |
|
---|
[193] | 1085 | if (stage < mFixedFunctionTextureUnits)
|
---|
| 1086 | {
|
---|
[97] | 1087 | glEnable( mTextureTypes[stage] );
|
---|
[193] | 1088 | }
|
---|
| 1089 |
|
---|
[97] | 1090 | if(!tex.isNull())
|
---|
| 1091 | glBindTexture( mTextureTypes[stage], tex->getGLID() );
|
---|
[193] | 1092 |
|
---|
[97] | 1093 | }
|
---|
| 1094 | else
|
---|
| 1095 | {
|
---|
[193] | 1096 | if (stage < mFixedFunctionTextureUnits)
|
---|
| 1097 | {
|
---|
[97] | 1098 | if (lastTextureType != 0)
|
---|
| 1099 | {
|
---|
| 1100 | glDisable( mTextureTypes[stage] );
|
---|
| 1101 | }
|
---|
| 1102 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
---|
| 1103 | }
|
---|
[193] | 1104 | }
|
---|
[97] | 1105 |
|
---|
| 1106 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
[193] | 1107 |
|
---|
[97] | 1108 | }
|
---|
| 1109 |
|
---|
| 1110 | //-----------------------------------------------------------------------------
|
---|
| 1111 | void GLRenderSystem::_setTextureCoordSet(size_t stage, size_t index)
|
---|
| 1112 | {
|
---|
| 1113 | mTextureCoordIndex[stage] = index;
|
---|
| 1114 | }
|
---|
| 1115 | //-----------------------------------------------------------------------------
|
---|
| 1116 | void GLRenderSystem::_setTextureCoordCalculation(size_t stage, TexCoordCalcMethod m,
|
---|
| 1117 | const Frustum* frustum)
|
---|
| 1118 | {
|
---|
[193] | 1119 | if (stage >= mFixedFunctionTextureUnits)
|
---|
| 1120 | {
|
---|
| 1121 | // Can't do this
|
---|
| 1122 | return;
|
---|
| 1123 | }
|
---|
| 1124 |
|
---|
| 1125 |
|
---|
[97] | 1126 | GLfloat M[16];
|
---|
| 1127 | Matrix4 projectionBias;
|
---|
| 1128 |
|
---|
| 1129 | // Default to no extra auto texture matrix
|
---|
| 1130 | mUseAutoTextureMatrix = false;
|
---|
| 1131 |
|
---|
| 1132 | GLfloat eyePlaneS[] = {1.0, 0.0, 0.0, 0.0};
|
---|
| 1133 | GLfloat eyePlaneT[] = {0.0, 1.0, 0.0, 0.0};
|
---|
| 1134 | GLfloat eyePlaneR[] = {0.0, 0.0, 1.0, 0.0};
|
---|
| 1135 | GLfloat eyePlaneQ[] = {0.0, 0.0, 0.0, 1.0};
|
---|
| 1136 |
|
---|
| 1137 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
| 1138 |
|
---|
| 1139 | switch( m )
|
---|
| 1140 | {
|
---|
| 1141 | case TEXCALC_NONE:
|
---|
| 1142 | glDisable( GL_TEXTURE_GEN_S );
|
---|
| 1143 | glDisable( GL_TEXTURE_GEN_T );
|
---|
| 1144 | glDisable( GL_TEXTURE_GEN_R );
|
---|
| 1145 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1146 | break;
|
---|
| 1147 |
|
---|
| 1148 | case TEXCALC_ENVIRONMENT_MAP:
|
---|
| 1149 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
| 1150 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
| 1151 |
|
---|
| 1152 | glEnable( GL_TEXTURE_GEN_S );
|
---|
| 1153 | glEnable( GL_TEXTURE_GEN_T );
|
---|
| 1154 | glDisable( GL_TEXTURE_GEN_R );
|
---|
| 1155 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1156 |
|
---|
| 1157 | // Need to use a texture matrix to flip the spheremap
|
---|
| 1158 | mUseAutoTextureMatrix = true;
|
---|
| 1159 | memset(mAutoTextureMatrix, 0, sizeof(GLfloat)*16);
|
---|
| 1160 | mAutoTextureMatrix[0] = mAutoTextureMatrix[10] = mAutoTextureMatrix[15] = 1.0f;
|
---|
| 1161 | mAutoTextureMatrix[5] = -1.0f;
|
---|
| 1162 |
|
---|
| 1163 | break;
|
---|
| 1164 |
|
---|
| 1165 | case TEXCALC_ENVIRONMENT_MAP_PLANAR:
|
---|
| 1166 | // XXX This doesn't seem right?!
|
---|
| 1167 | #ifdef GL_VERSION_1_3
|
---|
| 1168 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1169 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1170 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1171 |
|
---|
| 1172 | glEnable( GL_TEXTURE_GEN_S );
|
---|
| 1173 | glEnable( GL_TEXTURE_GEN_T );
|
---|
| 1174 | glEnable( GL_TEXTURE_GEN_R );
|
---|
| 1175 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1176 | #else
|
---|
| 1177 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
| 1178 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
| 1179 |
|
---|
| 1180 | glEnable( GL_TEXTURE_GEN_S );
|
---|
| 1181 | glEnable( GL_TEXTURE_GEN_T );
|
---|
| 1182 | glDisable( GL_TEXTURE_GEN_R );
|
---|
| 1183 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1184 | #endif
|
---|
| 1185 | break;
|
---|
| 1186 | case TEXCALC_ENVIRONMENT_MAP_REFLECTION:
|
---|
| 1187 |
|
---|
| 1188 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1189 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1190 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
| 1191 |
|
---|
| 1192 | glEnable( GL_TEXTURE_GEN_S );
|
---|
| 1193 | glEnable( GL_TEXTURE_GEN_T );
|
---|
| 1194 | glEnable( GL_TEXTURE_GEN_R );
|
---|
| 1195 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1196 |
|
---|
| 1197 | // We need an extra texture matrix here
|
---|
| 1198 | // This sets the texture matrix to be the inverse of the modelview matrix
|
---|
| 1199 | mUseAutoTextureMatrix = true;
|
---|
| 1200 | glGetFloatv( GL_MODELVIEW_MATRIX, M );
|
---|
| 1201 |
|
---|
| 1202 | // Transpose 3x3 in order to invert matrix (rotation)
|
---|
| 1203 | // Note that we need to invert the Z _before_ the rotation
|
---|
| 1204 | // No idea why we have to invert the Z at all, but reflection is wrong without it
|
---|
| 1205 | mAutoTextureMatrix[0] = M[0]; mAutoTextureMatrix[1] = M[4]; mAutoTextureMatrix[2] = -M[8];
|
---|
| 1206 | mAutoTextureMatrix[4] = M[1]; mAutoTextureMatrix[5] = M[5]; mAutoTextureMatrix[6] = -M[9];
|
---|
| 1207 | mAutoTextureMatrix[8] = M[2]; mAutoTextureMatrix[9] = M[6]; mAutoTextureMatrix[10] = -M[10];
|
---|
| 1208 | mAutoTextureMatrix[3] = mAutoTextureMatrix[7] = mAutoTextureMatrix[11] = 0.0f;
|
---|
| 1209 | mAutoTextureMatrix[12] = mAutoTextureMatrix[13] = mAutoTextureMatrix[14] = 0.0f;
|
---|
| 1210 | mAutoTextureMatrix[15] = 1.0f;
|
---|
| 1211 |
|
---|
| 1212 | break;
|
---|
| 1213 | case TEXCALC_ENVIRONMENT_MAP_NORMAL:
|
---|
| 1214 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
| 1215 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
| 1216 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
| 1217 |
|
---|
| 1218 | glEnable( GL_TEXTURE_GEN_S );
|
---|
| 1219 | glEnable( GL_TEXTURE_GEN_T );
|
---|
| 1220 | glEnable( GL_TEXTURE_GEN_R );
|
---|
| 1221 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
| 1222 | break;
|
---|
| 1223 | case TEXCALC_PROJECTIVE_TEXTURE:
|
---|
| 1224 | glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
| 1225 | glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
| 1226 | glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
| 1227 | glTexGeni(GL_Q, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
| 1228 | glTexGenfv(GL_S, GL_EYE_PLANE, eyePlaneS);
|
---|
| 1229 | glTexGenfv(GL_T, GL_EYE_PLANE, eyePlaneT);
|
---|
| 1230 | glTexGenfv(GL_R, GL_EYE_PLANE, eyePlaneR);
|
---|
| 1231 | glTexGenfv(GL_Q, GL_EYE_PLANE, eyePlaneQ);
|
---|
| 1232 | glEnable(GL_TEXTURE_GEN_S);
|
---|
| 1233 | glEnable(GL_TEXTURE_GEN_T);
|
---|
| 1234 | glEnable(GL_TEXTURE_GEN_R);
|
---|
| 1235 | glEnable(GL_TEXTURE_GEN_Q);
|
---|
| 1236 |
|
---|
| 1237 | mUseAutoTextureMatrix = true;
|
---|
| 1238 |
|
---|
| 1239 | // Set scale and translation matrix for projective textures
|
---|
| 1240 | projectionBias = Matrix4::ZERO;
|
---|
| 1241 | projectionBias[0][0] = 0.5; projectionBias[1][1] = -0.5;
|
---|
| 1242 | projectionBias[2][2] = 1.0; projectionBias[0][3] = 0.5;
|
---|
| 1243 | projectionBias[1][3] = 0.5; projectionBias[3][3] = 1.0;
|
---|
| 1244 |
|
---|
| 1245 | projectionBias = projectionBias * frustum->getProjectionMatrix();
|
---|
| 1246 | projectionBias = projectionBias * frustum->getViewMatrix();
|
---|
| 1247 | projectionBias = projectionBias * mWorldMatrix;
|
---|
| 1248 |
|
---|
| 1249 | makeGLMatrix(mAutoTextureMatrix, projectionBias);
|
---|
| 1250 | break;
|
---|
| 1251 | default:
|
---|
| 1252 | break;
|
---|
| 1253 | }
|
---|
| 1254 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
| 1255 | }
|
---|
| 1256 | //-----------------------------------------------------------------------------
|
---|
| 1257 | void GLRenderSystem::_setTextureAddressingMode(size_t stage, TextureUnitState::TextureAddressingMode tam)
|
---|
| 1258 | {
|
---|
| 1259 | GLint type;
|
---|
| 1260 | switch(tam)
|
---|
| 1261 | {
|
---|
| 1262 | case TextureUnitState::TAM_WRAP:
|
---|
| 1263 | type = GL_REPEAT;
|
---|
| 1264 | break;
|
---|
| 1265 | case TextureUnitState::TAM_MIRROR:
|
---|
| 1266 | type = GL_MIRRORED_REPEAT;
|
---|
| 1267 | break;
|
---|
| 1268 | case TextureUnitState::TAM_CLAMP:
|
---|
| 1269 | type = GL_CLAMP_TO_EDGE;
|
---|
| 1270 | break;
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
| 1274 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_S, type );
|
---|
| 1275 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_T, type );
|
---|
| 1276 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_R, type );
|
---|
| 1277 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
| 1278 | }
|
---|
| 1279 | //-----------------------------------------------------------------------------
|
---|
| 1280 | void GLRenderSystem::_setTextureMatrix(size_t stage, const Matrix4& xform)
|
---|
| 1281 | {
|
---|
[193] | 1282 | if (stage >= mFixedFunctionTextureUnits)
|
---|
| 1283 | {
|
---|
| 1284 | // Can't do this
|
---|
| 1285 | return;
|
---|
| 1286 | }
|
---|
| 1287 |
|
---|
[97] | 1288 | GLfloat mat[16];
|
---|
| 1289 | makeGLMatrix(mat, xform);
|
---|
| 1290 |
|
---|
| 1291 | if(mTextureTypes[stage] != GL_TEXTURE_3D &&
|
---|
| 1292 | mTextureTypes[stage] != GL_TEXTURE_CUBE_MAP)
|
---|
| 1293 | {
|
---|
| 1294 | // Convert 3x3 rotation/translation matrix to 4x4
|
---|
| 1295 | mat[12] = mat[8];
|
---|
| 1296 | mat[13] = mat[9];
|
---|
| 1297 | }
|
---|
| 1298 | // mat[14] = mat[10];
|
---|
| 1299 | // mat[15] = mat[11];
|
---|
| 1300 |
|
---|
| 1301 | // for (int j=0; j< 4; j++)
|
---|
| 1302 | // {
|
---|
| 1303 | // int x = 0;
|
---|
| 1304 | // for (x = 0; x < 4; x++)
|
---|
| 1305 | // {
|
---|
| 1306 | // printf("[%2d]=%0.2f\t", (x*4) + j, mat[(x*4) + j]);
|
---|
| 1307 | // }
|
---|
| 1308 | // printf("\n");
|
---|
| 1309 | // }
|
---|
| 1310 |
|
---|
| 1311 | glActiveTextureARB_ptr(GL_TEXTURE0 + stage);
|
---|
| 1312 | glMatrixMode(GL_TEXTURE);
|
---|
| 1313 |
|
---|
| 1314 | if (mUseAutoTextureMatrix)
|
---|
| 1315 | {
|
---|
| 1316 | // Load auto matrix in
|
---|
| 1317 | glLoadMatrixf(mAutoTextureMatrix);
|
---|
| 1318 | // Concat new matrix
|
---|
| 1319 | glMultMatrixf(mat);
|
---|
| 1320 |
|
---|
| 1321 | }
|
---|
| 1322 | else
|
---|
| 1323 | {
|
---|
| 1324 | // Just load this matrix
|
---|
| 1325 | glLoadMatrixf(mat);
|
---|
| 1326 | }
|
---|
| 1327 |
|
---|
| 1328 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1329 | glActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
| 1330 | }
|
---|
| 1331 | //-----------------------------------------------------------------------------
|
---|
| 1332 | GLint GLRenderSystem::getBlendMode(SceneBlendFactor ogreBlend) const
|
---|
| 1333 | {
|
---|
| 1334 | switch(ogreBlend)
|
---|
| 1335 | {
|
---|
| 1336 | case SBF_ONE:
|
---|
| 1337 | return GL_ONE;
|
---|
| 1338 | case SBF_ZERO:
|
---|
| 1339 | return GL_ZERO;
|
---|
| 1340 | case SBF_DEST_COLOUR:
|
---|
| 1341 | return GL_DST_COLOR;
|
---|
| 1342 | case SBF_SOURCE_COLOUR:
|
---|
| 1343 | return GL_SRC_COLOR;
|
---|
| 1344 | case SBF_ONE_MINUS_DEST_COLOUR:
|
---|
| 1345 | return GL_ONE_MINUS_DST_COLOR;
|
---|
| 1346 | case SBF_ONE_MINUS_SOURCE_COLOUR:
|
---|
| 1347 | return GL_ONE_MINUS_SRC_COLOR;
|
---|
| 1348 | case SBF_DEST_ALPHA:
|
---|
| 1349 | return GL_DST_ALPHA;
|
---|
| 1350 | case SBF_SOURCE_ALPHA:
|
---|
| 1351 | return GL_SRC_ALPHA;
|
---|
| 1352 | case SBF_ONE_MINUS_DEST_ALPHA:
|
---|
| 1353 | return GL_ONE_MINUS_DST_ALPHA;
|
---|
| 1354 | case SBF_ONE_MINUS_SOURCE_ALPHA:
|
---|
| 1355 | return GL_ONE_MINUS_SRC_ALPHA;
|
---|
| 1356 | };
|
---|
| 1357 | // to keep compiler happy
|
---|
| 1358 | return GL_ONE;
|
---|
| 1359 | }
|
---|
| 1360 |
|
---|
| 1361 | void GLRenderSystem::_setSceneBlending(SceneBlendFactor sourceFactor, SceneBlendFactor destFactor)
|
---|
| 1362 | {
|
---|
| 1363 | GLint sourceBlend = getBlendMode(sourceFactor);
|
---|
| 1364 | GLint destBlend = getBlendMode(destFactor);
|
---|
[193] | 1365 | if(sourceFactor == SBF_ONE && destFactor == SBF_ZERO)
|
---|
| 1366 | {
|
---|
| 1367 | glDisable(GL_BLEND);
|
---|
| 1368 | }
|
---|
| 1369 | else
|
---|
| 1370 | {
|
---|
[97] | 1371 | glEnable(GL_BLEND);
|
---|
| 1372 | glBlendFunc(sourceBlend, destBlend);
|
---|
| 1373 | }
|
---|
[193] | 1374 | }
|
---|
[97] | 1375 | //-----------------------------------------------------------------------------
|
---|
| 1376 | void GLRenderSystem::_setAlphaRejectSettings(CompareFunction func, unsigned char value)
|
---|
| 1377 | {
|
---|
[193] | 1378 | if(func == CMPF_ALWAYS_PASS)
|
---|
| 1379 | {
|
---|
| 1380 | glDisable(GL_ALPHA_TEST);
|
---|
| 1381 | }
|
---|
| 1382 | else
|
---|
| 1383 | {
|
---|
[97] | 1384 | glEnable(GL_ALPHA_TEST);
|
---|
| 1385 | glAlphaFunc(convertCompareFunction(func), value / 255.0f);
|
---|
| 1386 | }
|
---|
[193] | 1387 | }
|
---|
[97] | 1388 | //-----------------------------------------------------------------------------
|
---|
| 1389 | void GLRenderSystem::_setViewport(Viewport *vp)
|
---|
| 1390 | {
|
---|
| 1391 | // Check if viewport is different
|
---|
| 1392 | if (vp != mActiveViewport || vp->_isUpdated())
|
---|
| 1393 | {
|
---|
| 1394 | RenderTarget* target;
|
---|
| 1395 | target = vp->getTarget();
|
---|
| 1396 | _setRenderTarget(target);
|
---|
| 1397 | mActiveViewport = vp;
|
---|
| 1398 |
|
---|
| 1399 | GLsizei x, y, w, h;
|
---|
| 1400 |
|
---|
| 1401 | // Calculate the "lower-left" corner of the viewport
|
---|
| 1402 | w = vp->getActualWidth();
|
---|
| 1403 | h = vp->getActualHeight();
|
---|
| 1404 | x = vp->getActualLeft();
|
---|
| 1405 | y = target->getHeight() - vp->getActualTop() - h;
|
---|
| 1406 |
|
---|
| 1407 | glViewport(x, y, w, h);
|
---|
| 1408 |
|
---|
| 1409 | // Configure the viewport clipping
|
---|
| 1410 | glScissor(x, y, w, h);
|
---|
| 1411 |
|
---|
| 1412 | vp->_clearUpdatedFlag();
|
---|
| 1413 | }
|
---|
| 1414 | }
|
---|
| 1415 |
|
---|
| 1416 | void GLRenderSystem::setLights()
|
---|
| 1417 | {
|
---|
| 1418 | for (size_t i = 0; i < MAX_LIGHTS; ++i)
|
---|
| 1419 | {
|
---|
| 1420 | if (mLights[i] != NULL)
|
---|
| 1421 | {
|
---|
| 1422 | Light* lt = mLights[i];
|
---|
| 1423 | setGLLightPositionDirection(lt, GL_LIGHT0 + i);
|
---|
| 1424 | }
|
---|
| 1425 | }
|
---|
| 1426 | }
|
---|
| 1427 |
|
---|
| 1428 | //-----------------------------------------------------------------------------
|
---|
| 1429 | void GLRenderSystem::_beginFrame(void)
|
---|
| 1430 | {
|
---|
| 1431 | OgreGuard( "GLRenderSystem::_beginFrame" );
|
---|
| 1432 |
|
---|
| 1433 | if (!mActiveViewport)
|
---|
| 1434 | OGRE_EXCEPT(999, "Cannot begin frame - no viewport selected.",
|
---|
| 1435 | "GLRenderSystem::_beginFrame");
|
---|
| 1436 |
|
---|
[193] | 1437 | // Activate the viewport clipping
|
---|
| 1438 | glEnable(GL_SCISSOR_TEST);
|
---|
[97] | 1439 | // Clear the viewport if required
|
---|
| 1440 | if (mActiveViewport->getClearEveryFrame())
|
---|
| 1441 | {
|
---|
| 1442 | clearFrameBuffer(FBT_COLOUR | FBT_DEPTH,
|
---|
| 1443 | mActiveViewport->getBackgroundColour());
|
---|
| 1444 | }
|
---|
| 1445 |
|
---|
| 1446 | OgreUnguard();
|
---|
| 1447 | }
|
---|
| 1448 |
|
---|
| 1449 | //-----------------------------------------------------------------------------
|
---|
| 1450 | void GLRenderSystem::_endFrame(void)
|
---|
| 1451 | {
|
---|
| 1452 | // Deactivate the viewport clipping.
|
---|
| 1453 | glDisable(GL_SCISSOR_TEST);
|
---|
| 1454 | }
|
---|
| 1455 |
|
---|
| 1456 | //-----------------------------------------------------------------------------
|
---|
| 1457 | void GLRenderSystem::_setCullingMode(CullingMode mode)
|
---|
| 1458 | {
|
---|
| 1459 | // NB: Because two-sided stencil API dependence of the front face, we must
|
---|
| 1460 | // use the same 'winding' for the front face everywhere. As the OGRE default
|
---|
| 1461 | // culling mode is clockwise, we also treat anticlockwise winding as front
|
---|
| 1462 | // face for consistently. On the assumption that, we can't change the front
|
---|
| 1463 | // face by glFrontFace anywhere.
|
---|
| 1464 |
|
---|
| 1465 | GLenum cullMode;
|
---|
| 1466 |
|
---|
| 1467 | switch( mode )
|
---|
| 1468 | {
|
---|
| 1469 | case CULL_NONE:
|
---|
| 1470 | glDisable( GL_CULL_FACE );
|
---|
| 1471 | return;
|
---|
| 1472 | case CULL_CLOCKWISE:
|
---|
| 1473 | if (mActiveRenderTarget &&
|
---|
| 1474 | ((mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) ||
|
---|
| 1475 | (!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding)))
|
---|
| 1476 | {
|
---|
| 1477 | cullMode = GL_FRONT;
|
---|
| 1478 | }
|
---|
| 1479 | else
|
---|
| 1480 | {
|
---|
| 1481 | cullMode = GL_BACK;
|
---|
| 1482 | }
|
---|
| 1483 | break;
|
---|
| 1484 | case CULL_ANTICLOCKWISE:
|
---|
| 1485 | if (mActiveRenderTarget &&
|
---|
| 1486 | ((mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) ||
|
---|
| 1487 | (!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding)))
|
---|
| 1488 | {
|
---|
| 1489 | cullMode = GL_BACK;
|
---|
| 1490 | }
|
---|
| 1491 | else
|
---|
| 1492 | {
|
---|
| 1493 | cullMode = GL_FRONT;
|
---|
| 1494 | }
|
---|
| 1495 | break;
|
---|
| 1496 | }
|
---|
| 1497 |
|
---|
| 1498 | glEnable( GL_CULL_FACE );
|
---|
| 1499 | glCullFace( cullMode );
|
---|
| 1500 | }
|
---|
| 1501 | //-----------------------------------------------------------------------------
|
---|
| 1502 | void GLRenderSystem::_setDepthBufferParams(bool depthTest, bool depthWrite, CompareFunction depthFunction)
|
---|
| 1503 | {
|
---|
| 1504 | _setDepthBufferCheckEnabled(depthTest);
|
---|
| 1505 | _setDepthBufferWriteEnabled(depthWrite);
|
---|
| 1506 | _setDepthBufferFunction(depthFunction);
|
---|
| 1507 | }
|
---|
| 1508 | //-----------------------------------------------------------------------------
|
---|
| 1509 | void GLRenderSystem::_setDepthBufferCheckEnabled(bool enabled)
|
---|
| 1510 | {
|
---|
| 1511 | if (enabled)
|
---|
| 1512 | {
|
---|
| 1513 | glClearDepth(1.0f);
|
---|
| 1514 | glEnable(GL_DEPTH_TEST);
|
---|
| 1515 | }
|
---|
| 1516 | else
|
---|
| 1517 | {
|
---|
| 1518 | glDisable(GL_DEPTH_TEST);
|
---|
| 1519 | }
|
---|
| 1520 | }
|
---|
| 1521 | //-----------------------------------------------------------------------------
|
---|
| 1522 | void GLRenderSystem::_setDepthBufferWriteEnabled(bool enabled)
|
---|
| 1523 | {
|
---|
| 1524 | GLboolean flag = enabled ? GL_TRUE : GL_FALSE;
|
---|
| 1525 | glDepthMask( flag );
|
---|
| 1526 | // Store for reference in _beginFrame
|
---|
| 1527 | mDepthWrite = enabled;
|
---|
| 1528 | }
|
---|
| 1529 | //-----------------------------------------------------------------------------
|
---|
| 1530 | void GLRenderSystem::_setDepthBufferFunction(CompareFunction func)
|
---|
| 1531 | {
|
---|
| 1532 | glDepthFunc(convertCompareFunction(func));
|
---|
| 1533 | }
|
---|
| 1534 | //-----------------------------------------------------------------------------
|
---|
| 1535 | void GLRenderSystem::_setDepthBias(ushort bias)
|
---|
| 1536 | {
|
---|
| 1537 | if (bias > 0)
|
---|
| 1538 | {
|
---|
| 1539 | glEnable(GL_POLYGON_OFFSET_FILL);
|
---|
| 1540 | glEnable(GL_POLYGON_OFFSET_POINT);
|
---|
| 1541 | glEnable(GL_POLYGON_OFFSET_LINE);
|
---|
| 1542 | // Bias is in {0, 16}, scale the unit addition appropriately
|
---|
| 1543 | glPolygonOffset(0.0f, -bias);
|
---|
| 1544 | }
|
---|
| 1545 | else
|
---|
| 1546 | {
|
---|
| 1547 | glDisable(GL_POLYGON_OFFSET_FILL);
|
---|
| 1548 | glDisable(GL_POLYGON_OFFSET_POINT);
|
---|
| 1549 | glDisable(GL_POLYGON_OFFSET_LINE);
|
---|
| 1550 | }
|
---|
| 1551 | }
|
---|
| 1552 | //-----------------------------------------------------------------------------
|
---|
| 1553 | void GLRenderSystem::_setColourBufferWriteEnabled(bool red, bool green, bool blue, bool alpha)
|
---|
| 1554 | {
|
---|
| 1555 | glColorMask(red, green, blue, alpha);
|
---|
| 1556 | // record this
|
---|
| 1557 | mColourWrite[0] = red;
|
---|
| 1558 | mColourWrite[1] = blue;
|
---|
| 1559 | mColourWrite[2] = green;
|
---|
| 1560 | mColourWrite[3] = alpha;
|
---|
| 1561 | }
|
---|
| 1562 | //-----------------------------------------------------------------------------
|
---|
| 1563 | String GLRenderSystem::getErrorDescription(long errCode) const
|
---|
| 1564 | {
|
---|
| 1565 | const GLubyte *errString = gluErrorString (errCode);
|
---|
| 1566 | return String((const char*) errString);
|
---|
| 1567 | }
|
---|
| 1568 | //-----------------------------------------------------------------------------
|
---|
| 1569 | void GLRenderSystem::setLightingEnabled(bool enabled)
|
---|
| 1570 | {
|
---|
| 1571 | if (enabled)
|
---|
| 1572 | {
|
---|
| 1573 | glEnable(GL_LIGHTING);
|
---|
| 1574 | }
|
---|
| 1575 | else
|
---|
| 1576 | {
|
---|
| 1577 | glDisable(GL_LIGHTING);
|
---|
| 1578 | }
|
---|
| 1579 | }
|
---|
| 1580 | //-----------------------------------------------------------------------------
|
---|
| 1581 | void GLRenderSystem::_setFog(FogMode mode, const ColourValue& colour, Real density, Real start, Real end)
|
---|
| 1582 | {
|
---|
| 1583 |
|
---|
| 1584 | GLint fogMode;
|
---|
| 1585 | switch (mode)
|
---|
| 1586 | {
|
---|
| 1587 | case FOG_EXP:
|
---|
| 1588 | fogMode = GL_EXP;
|
---|
| 1589 | break;
|
---|
| 1590 | case FOG_EXP2:
|
---|
| 1591 | fogMode = GL_EXP2;
|
---|
| 1592 | break;
|
---|
| 1593 | case FOG_LINEAR:
|
---|
| 1594 | fogMode = GL_LINEAR;
|
---|
| 1595 | break;
|
---|
| 1596 | default:
|
---|
| 1597 | // Give up on it
|
---|
| 1598 | glDisable(GL_FOG);
|
---|
| 1599 | return;
|
---|
| 1600 | }
|
---|
| 1601 |
|
---|
| 1602 | glEnable(GL_FOG);
|
---|
| 1603 | glFogi(GL_FOG_MODE, fogMode);
|
---|
| 1604 | GLfloat fogColor[4] = {colour.r, colour.g, colour.b, colour.a};
|
---|
| 1605 | glFogfv(GL_FOG_COLOR, fogColor);
|
---|
| 1606 | glFogf(GL_FOG_DENSITY, density);
|
---|
| 1607 | glFogf(GL_FOG_START, start);
|
---|
| 1608 | glFogf(GL_FOG_END, end);
|
---|
| 1609 | // XXX Hint here?
|
---|
| 1610 | }
|
---|
| 1611 |
|
---|
| 1612 | void GLRenderSystem::convertColourValue(const ColourValue& colour, uint32* pDest)
|
---|
| 1613 | {
|
---|
| 1614 | #if OGRE_ENDIAN == OGRE_ENDIAN_BIG
|
---|
| 1615 | *pDest = colour.getAsRGBA();
|
---|
| 1616 | #else
|
---|
| 1617 | // GL accesses by byte, so use ABGR so little-endian format will make it RGBA in byte mode
|
---|
| 1618 | *pDest = colour.getAsABGR();
|
---|
| 1619 | #endif
|
---|
| 1620 | }
|
---|
| 1621 |
|
---|
| 1622 | void GLRenderSystem::_makeProjectionMatrix(const Radian& fovy, Real aspect, Real nearPlane,
|
---|
| 1623 | Real farPlane, Matrix4& dest, bool forGpuProgram)
|
---|
| 1624 | {
|
---|
| 1625 | Radian thetaY ( fovy / 2.0f );
|
---|
| 1626 | Real tanThetaY = Math::Tan(thetaY);
|
---|
| 1627 | //Real thetaX = thetaY * aspect;
|
---|
| 1628 | //Real tanThetaX = Math::Tan(thetaX);
|
---|
| 1629 |
|
---|
| 1630 | // Calc matrix elements
|
---|
| 1631 | Real w = (1.0f / tanThetaY) / aspect;
|
---|
| 1632 | Real h = 1.0f / tanThetaY;
|
---|
| 1633 | Real q, qn;
|
---|
| 1634 | if (farPlane == 0)
|
---|
| 1635 | {
|
---|
| 1636 | // Infinite far plane
|
---|
| 1637 | q = Frustum::INFINITE_FAR_PLANE_ADJUST - 1;
|
---|
| 1638 | qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 2);
|
---|
| 1639 | }
|
---|
| 1640 | else
|
---|
| 1641 | {
|
---|
| 1642 | q = -(farPlane + nearPlane) / (farPlane - nearPlane);
|
---|
| 1643 | qn = -2 * (farPlane * nearPlane) / (farPlane - nearPlane);
|
---|
| 1644 | }
|
---|
| 1645 |
|
---|
| 1646 | // NB This creates Z in range [-1,1]
|
---|
| 1647 | //
|
---|
| 1648 | // [ w 0 0 0 ]
|
---|
| 1649 | // [ 0 h 0 0 ]
|
---|
| 1650 | // [ 0 0 q qn ]
|
---|
| 1651 | // [ 0 0 -1 0 ]
|
---|
| 1652 |
|
---|
| 1653 | dest = Matrix4::ZERO;
|
---|
| 1654 | dest[0][0] = w;
|
---|
| 1655 | dest[1][1] = h;
|
---|
| 1656 | dest[2][2] = q;
|
---|
| 1657 | dest[2][3] = qn;
|
---|
| 1658 | dest[3][2] = -1;
|
---|
| 1659 |
|
---|
| 1660 | }
|
---|
| 1661 |
|
---|
| 1662 | void GLRenderSystem::_makeOrthoMatrix(const Radian& fovy, Real aspect, Real nearPlane,
|
---|
| 1663 | Real farPlane, Matrix4& dest, bool forGpuProgram)
|
---|
| 1664 | {
|
---|
| 1665 | Radian thetaY (fovy / 2.0f);
|
---|
| 1666 | Real tanThetaY = Math::Tan(thetaY);
|
---|
| 1667 |
|
---|
| 1668 | //Real thetaX = thetaY * aspect;
|
---|
| 1669 | Real tanThetaX = tanThetaY * aspect; //Math::Tan(thetaX);
|
---|
| 1670 | Real half_w = tanThetaX * nearPlane;
|
---|
| 1671 | Real half_h = tanThetaY * nearPlane;
|
---|
| 1672 | Real iw = 1.0 / half_w;
|
---|
| 1673 | Real ih = 1.0 / half_h;
|
---|
| 1674 | Real q;
|
---|
| 1675 | if (farPlane == 0)
|
---|
| 1676 | {
|
---|
| 1677 | q = 0;
|
---|
| 1678 | }
|
---|
| 1679 | else
|
---|
| 1680 | {
|
---|
| 1681 | q = 2.0 / (farPlane - nearPlane);
|
---|
| 1682 | }
|
---|
| 1683 | dest = Matrix4::ZERO;
|
---|
| 1684 | dest[0][0] = iw;
|
---|
| 1685 | dest[1][1] = ih;
|
---|
| 1686 | dest[2][2] = -q;
|
---|
| 1687 | dest[2][3] = - (farPlane + nearPlane)/(farPlane - nearPlane);
|
---|
| 1688 | dest[3][3] = 1;
|
---|
| 1689 | }
|
---|
| 1690 |
|
---|
| 1691 | void GLRenderSystem::_setRasterisationMode(SceneDetailLevel level)
|
---|
| 1692 | {
|
---|
| 1693 | GLenum glmode;
|
---|
| 1694 | switch(level)
|
---|
| 1695 | {
|
---|
| 1696 | case SDL_POINTS:
|
---|
| 1697 | glmode = GL_POINT;
|
---|
| 1698 | break;
|
---|
| 1699 | case SDL_WIREFRAME:
|
---|
| 1700 | glmode = GL_LINE;
|
---|
| 1701 | break;
|
---|
| 1702 | case SDL_SOLID:
|
---|
| 1703 | glmode = GL_FILL;
|
---|
| 1704 | break;
|
---|
| 1705 | }
|
---|
| 1706 | glPolygonMode(GL_FRONT_AND_BACK, glmode);
|
---|
| 1707 | }
|
---|
| 1708 | //---------------------------------------------------------------------
|
---|
| 1709 | void GLRenderSystem::setStencilCheckEnabled(bool enabled)
|
---|
| 1710 | {
|
---|
| 1711 | if (enabled)
|
---|
| 1712 | {
|
---|
| 1713 | glEnable(GL_STENCIL_TEST);
|
---|
| 1714 | }
|
---|
| 1715 | else
|
---|
| 1716 | {
|
---|
| 1717 | glDisable(GL_STENCIL_TEST);
|
---|
| 1718 | }
|
---|
| 1719 | }
|
---|
| 1720 | //---------------------------------------------------------------------
|
---|
| 1721 | void GLRenderSystem::setStencilBufferParams(CompareFunction func,
|
---|
| 1722 | uint32 refValue, uint32 mask, StencilOperation stencilFailOp,
|
---|
| 1723 | StencilOperation depthFailOp, StencilOperation passOp,
|
---|
| 1724 | bool twoSidedOperation)
|
---|
| 1725 | {
|
---|
| 1726 | bool flip;
|
---|
| 1727 |
|
---|
| 1728 | if (twoSidedOperation)
|
---|
| 1729 | {
|
---|
| 1730 | if (!mCapabilities->hasCapability(RSC_TWO_SIDED_STENCIL))
|
---|
| 1731 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "2-sided stencils are not supported",
|
---|
| 1732 | "GLRenderSystem::setStencilBufferParams");
|
---|
| 1733 | glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
|
---|
| 1734 | // NB: We should always treat CCW as front face for consistent with default
|
---|
| 1735 | // culling mode. Therefore, we must take care with two-sided stencil settings.
|
---|
| 1736 | flip = (mInvertVertexWinding && !mActiveRenderTarget->requiresTextureFlipping()) ||
|
---|
| 1737 | (!mInvertVertexWinding && mActiveRenderTarget->requiresTextureFlipping());
|
---|
| 1738 |
|
---|
| 1739 | // Set alternative versions of ops
|
---|
| 1740 | glActiveStencilFaceEXT_ptr(GL_BACK);
|
---|
| 1741 | glStencilMask(mask);
|
---|
| 1742 | glStencilFunc(convertCompareFunction(func), refValue, mask);
|
---|
| 1743 | glStencilOp(
|
---|
| 1744 | convertStencilOp(stencilFailOp, !flip),
|
---|
| 1745 | convertStencilOp(depthFailOp, !flip),
|
---|
| 1746 | convertStencilOp(passOp, !flip));
|
---|
| 1747 | // reset
|
---|
| 1748 | glActiveStencilFaceEXT_ptr(GL_FRONT);
|
---|
| 1749 | }
|
---|
| 1750 | else
|
---|
| 1751 | {
|
---|
| 1752 | glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
|
---|
| 1753 | flip = false;
|
---|
| 1754 | }
|
---|
| 1755 |
|
---|
| 1756 | glStencilMask(mask);
|
---|
| 1757 | glStencilFunc(convertCompareFunction(func), refValue, mask);
|
---|
| 1758 | glStencilOp(
|
---|
| 1759 | convertStencilOp(stencilFailOp, flip),
|
---|
| 1760 | convertStencilOp(depthFailOp, flip),
|
---|
| 1761 | convertStencilOp(passOp, flip));
|
---|
| 1762 | }
|
---|
| 1763 | //---------------------------------------------------------------------
|
---|
| 1764 | GLint GLRenderSystem::convertCompareFunction(CompareFunction func) const
|
---|
| 1765 | {
|
---|
| 1766 | switch(func)
|
---|
| 1767 | {
|
---|
| 1768 | case CMPF_ALWAYS_FAIL:
|
---|
| 1769 | return GL_NEVER;
|
---|
| 1770 | case CMPF_ALWAYS_PASS:
|
---|
| 1771 | return GL_ALWAYS;
|
---|
| 1772 | case CMPF_LESS:
|
---|
| 1773 | return GL_LESS;
|
---|
| 1774 | case CMPF_LESS_EQUAL:
|
---|
| 1775 | return GL_LEQUAL;
|
---|
| 1776 | case CMPF_EQUAL:
|
---|
| 1777 | return GL_EQUAL;
|
---|
| 1778 | case CMPF_NOT_EQUAL:
|
---|
| 1779 | return GL_NOTEQUAL;
|
---|
| 1780 | case CMPF_GREATER_EQUAL:
|
---|
| 1781 | return GL_GEQUAL;
|
---|
| 1782 | case CMPF_GREATER:
|
---|
| 1783 | return GL_GREATER;
|
---|
| 1784 | };
|
---|
| 1785 | // to keep compiler happy
|
---|
| 1786 | return GL_ALWAYS;
|
---|
| 1787 | }
|
---|
| 1788 | //---------------------------------------------------------------------
|
---|
| 1789 | GLint GLRenderSystem::convertStencilOp(StencilOperation op, bool invert) const
|
---|
| 1790 | {
|
---|
| 1791 | switch(op)
|
---|
| 1792 | {
|
---|
| 1793 | case SOP_KEEP:
|
---|
| 1794 | return GL_KEEP;
|
---|
| 1795 | case SOP_ZERO:
|
---|
| 1796 | return GL_ZERO;
|
---|
| 1797 | case SOP_REPLACE:
|
---|
| 1798 | return GL_REPLACE;
|
---|
| 1799 | case SOP_INCREMENT:
|
---|
| 1800 | return invert ? GL_DECR : GL_INCR;
|
---|
| 1801 | case SOP_DECREMENT:
|
---|
| 1802 | return invert ? GL_INCR : GL_DECR;
|
---|
| 1803 | case SOP_INCREMENT_WRAP:
|
---|
| 1804 | return invert ? GL_DECR_WRAP_EXT : GL_INCR_WRAP_EXT;
|
---|
| 1805 | case SOP_DECREMENT_WRAP:
|
---|
| 1806 | return invert ? GL_INCR_WRAP_EXT : GL_DECR_WRAP_EXT;
|
---|
| 1807 | case SOP_INVERT:
|
---|
| 1808 | return GL_INVERT;
|
---|
| 1809 | };
|
---|
| 1810 | // to keep compiler happy
|
---|
| 1811 | return SOP_KEEP;
|
---|
| 1812 | }
|
---|
| 1813 | //---------------------------------------------------------------------
|
---|
| 1814 | GLuint GLRenderSystem::getCombinedMinMipFilter(void) const
|
---|
| 1815 | {
|
---|
| 1816 | switch(mMinFilter)
|
---|
| 1817 | {
|
---|
| 1818 | case FO_ANISOTROPIC:
|
---|
| 1819 | case FO_LINEAR:
|
---|
| 1820 | switch(mMipFilter)
|
---|
| 1821 | {
|
---|
| 1822 | case FO_ANISOTROPIC:
|
---|
| 1823 | case FO_LINEAR:
|
---|
| 1824 | // linear min, linear mip
|
---|
| 1825 | return GL_LINEAR_MIPMAP_LINEAR;
|
---|
| 1826 | case FO_POINT:
|
---|
| 1827 | // linear min, point mip
|
---|
| 1828 | return GL_LINEAR_MIPMAP_NEAREST;
|
---|
| 1829 | case FO_NONE:
|
---|
| 1830 | // linear min, no mip
|
---|
| 1831 | return GL_LINEAR;
|
---|
| 1832 | }
|
---|
| 1833 | break;
|
---|
| 1834 | case FO_POINT:
|
---|
| 1835 | case FO_NONE:
|
---|
| 1836 | switch(mMipFilter)
|
---|
| 1837 | {
|
---|
| 1838 | case FO_ANISOTROPIC:
|
---|
| 1839 | case FO_LINEAR:
|
---|
| 1840 | // nearest min, linear mip
|
---|
| 1841 | return GL_NEAREST_MIPMAP_LINEAR;
|
---|
| 1842 | case FO_POINT:
|
---|
| 1843 | // nearest min, point mip
|
---|
| 1844 | return GL_NEAREST_MIPMAP_NEAREST;
|
---|
| 1845 | case FO_NONE:
|
---|
| 1846 | // nearest min, no mip
|
---|
| 1847 | return GL_NEAREST;
|
---|
| 1848 | }
|
---|
| 1849 | break;
|
---|
| 1850 | }
|
---|
| 1851 |
|
---|
| 1852 | // should never get here
|
---|
| 1853 | return 0;
|
---|
| 1854 |
|
---|
| 1855 | }
|
---|
| 1856 | //---------------------------------------------------------------------
|
---|
| 1857 | void GLRenderSystem::_setTextureUnitFiltering(size_t unit,
|
---|
| 1858 | FilterType ftype, FilterOptions fo)
|
---|
| 1859 | {
|
---|
| 1860 | OgreGuard( "GLRenderSystem::_setTextureUnitFiltering" );
|
---|
| 1861 |
|
---|
| 1862 | glActiveTextureARB_ptr( GL_TEXTURE0 + unit );
|
---|
| 1863 | switch(ftype)
|
---|
| 1864 | {
|
---|
| 1865 | case FT_MIN:
|
---|
| 1866 | mMinFilter = fo;
|
---|
| 1867 | // Combine with existing mip filter
|
---|
| 1868 | glTexParameteri(
|
---|
| 1869 | mTextureTypes[unit],
|
---|
| 1870 | GL_TEXTURE_MIN_FILTER,
|
---|
| 1871 | getCombinedMinMipFilter());
|
---|
| 1872 | break;
|
---|
| 1873 | case FT_MAG:
|
---|
| 1874 | switch (fo)
|
---|
| 1875 | {
|
---|
| 1876 | case FO_ANISOTROPIC: // GL treats linear and aniso the same
|
---|
| 1877 | case FO_LINEAR:
|
---|
| 1878 | glTexParameteri(
|
---|
| 1879 | mTextureTypes[unit],
|
---|
| 1880 | GL_TEXTURE_MAG_FILTER,
|
---|
| 1881 | GL_LINEAR);
|
---|
| 1882 | break;
|
---|
| 1883 | case FO_POINT:
|
---|
| 1884 | case FO_NONE:
|
---|
| 1885 | glTexParameteri(
|
---|
| 1886 | mTextureTypes[unit],
|
---|
| 1887 | GL_TEXTURE_MAG_FILTER,
|
---|
| 1888 | GL_NEAREST);
|
---|
| 1889 | break;
|
---|
| 1890 | }
|
---|
| 1891 | break;
|
---|
| 1892 | case FT_MIP:
|
---|
| 1893 | mMipFilter = fo;
|
---|
| 1894 | // Combine with existing min filter
|
---|
| 1895 | glTexParameteri(
|
---|
| 1896 | mTextureTypes[unit],
|
---|
| 1897 | GL_TEXTURE_MIN_FILTER,
|
---|
| 1898 | getCombinedMinMipFilter());
|
---|
| 1899 | break;
|
---|
| 1900 | }
|
---|
| 1901 |
|
---|
| 1902 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
| 1903 |
|
---|
| 1904 | OgreUnguard();
|
---|
| 1905 | }
|
---|
| 1906 | //---------------------------------------------------------------------
|
---|
| 1907 | GLfloat GLRenderSystem::_getCurrentAnisotropy(size_t unit)
|
---|
| 1908 | {
|
---|
| 1909 | GLfloat curAniso = 0;
|
---|
| 1910 | glGetTexParameterfv(mTextureTypes[unit],
|
---|
| 1911 | GL_TEXTURE_MAX_ANISOTROPY_EXT, &curAniso);
|
---|
| 1912 | return curAniso ? curAniso : 1;
|
---|
| 1913 | }
|
---|
| 1914 | //---------------------------------------------------------------------
|
---|
| 1915 | void GLRenderSystem::_setTextureLayerAnisotropy(size_t unit, unsigned int maxAnisotropy)
|
---|
| 1916 | {
|
---|
| 1917 | if (!mCapabilities->hasCapability(RSC_ANISOTROPY))
|
---|
| 1918 | return;
|
---|
| 1919 |
|
---|
| 1920 | GLfloat largest_supported_anisotropy = 0;
|
---|
| 1921 | glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &largest_supported_anisotropy);
|
---|
| 1922 | if (maxAnisotropy > largest_supported_anisotropy)
|
---|
| 1923 | maxAnisotropy = largest_supported_anisotropy ? largest_supported_anisotropy : 1;
|
---|
| 1924 | if (_getCurrentAnisotropy(unit) != maxAnisotropy)
|
---|
| 1925 | glTexParameterf(mTextureTypes[unit], GL_TEXTURE_MAX_ANISOTROPY_EXT, maxAnisotropy);
|
---|
| 1926 | }
|
---|
| 1927 | //-----------------------------------------------------------------------------
|
---|
| 1928 | void GLRenderSystem::_setTextureBlendMode(size_t stage, const LayerBlendModeEx& bm)
|
---|
| 1929 | {
|
---|
[193] | 1930 | if (stage >= mFixedFunctionTextureUnits)
|
---|
| 1931 | {
|
---|
| 1932 | // Can't do this
|
---|
| 1933 | return;
|
---|
| 1934 | }
|
---|
| 1935 |
|
---|
[97] | 1936 | // Check to see if blending is supported
|
---|
| 1937 | if(!mCapabilities->hasCapability(RSC_BLENDING))
|
---|
| 1938 | return;
|
---|
| 1939 |
|
---|
| 1940 | GLenum src1op, src2op, cmd;
|
---|
| 1941 | GLfloat cv1[4], cv2[4];
|
---|
| 1942 |
|
---|
| 1943 | if (bm.blendType == LBT_COLOUR)
|
---|
| 1944 | {
|
---|
| 1945 | cv1[0] = bm.colourArg1.r;
|
---|
| 1946 | cv1[1] = bm.colourArg1.g;
|
---|
| 1947 | cv1[2] = bm.colourArg1.b;
|
---|
| 1948 | cv1[3] = bm.colourArg1.a;
|
---|
[115] | 1949 | mManualBlendColours[stage][0] = bm.colourArg1;
|
---|
[97] | 1950 |
|
---|
[115] | 1951 |
|
---|
[97] | 1952 | cv2[0] = bm.colourArg2.r;
|
---|
| 1953 | cv2[1] = bm.colourArg2.g;
|
---|
| 1954 | cv2[2] = bm.colourArg2.b;
|
---|
| 1955 | cv2[3] = bm.colourArg2.a;
|
---|
[115] | 1956 | mManualBlendColours[stage][1] = bm.colourArg2;
|
---|
[97] | 1957 | }
|
---|
| 1958 |
|
---|
| 1959 | if (bm.blendType == LBT_ALPHA)
|
---|
| 1960 | {
|
---|
[115] | 1961 | cv1[0] = mManualBlendColours[stage][0].r;
|
---|
| 1962 | cv1[1] = mManualBlendColours[stage][0].g;
|
---|
| 1963 | cv1[2] = mManualBlendColours[stage][0].b;
|
---|
[97] | 1964 | cv1[3] = bm.alphaArg1;
|
---|
| 1965 |
|
---|
[115] | 1966 | cv2[0] = mManualBlendColours[stage][1].r;
|
---|
| 1967 | cv2[1] = mManualBlendColours[stage][1].g;
|
---|
| 1968 | cv2[2] = mManualBlendColours[stage][1].b;
|
---|
[97] | 1969 | cv2[3] = bm.alphaArg2;
|
---|
| 1970 | }
|
---|
| 1971 |
|
---|
| 1972 | switch (bm.source1)
|
---|
| 1973 | {
|
---|
| 1974 | case LBS_CURRENT:
|
---|
| 1975 | src1op = GL_PREVIOUS;
|
---|
| 1976 | break;
|
---|
| 1977 | case LBS_TEXTURE:
|
---|
| 1978 | src1op = GL_TEXTURE;
|
---|
| 1979 | break;
|
---|
| 1980 | case LBS_MANUAL:
|
---|
| 1981 | src1op = GL_CONSTANT;
|
---|
| 1982 | break;
|
---|
| 1983 | case LBS_DIFFUSE:
|
---|
| 1984 | src1op = GL_PRIMARY_COLOR;
|
---|
| 1985 | break;
|
---|
| 1986 | // XXX
|
---|
| 1987 | case LBS_SPECULAR:
|
---|
| 1988 | default:
|
---|
| 1989 | src1op = 0;
|
---|
| 1990 | }
|
---|
| 1991 |
|
---|
| 1992 | switch (bm.source2)
|
---|
| 1993 | {
|
---|
| 1994 | case LBS_CURRENT:
|
---|
| 1995 | src2op = GL_PREVIOUS;
|
---|
| 1996 | break;
|
---|
| 1997 | case LBS_TEXTURE:
|
---|
| 1998 | src2op = GL_TEXTURE;
|
---|
| 1999 | break;
|
---|
| 2000 | case LBS_MANUAL:
|
---|
| 2001 | src2op = GL_CONSTANT;
|
---|
| 2002 | break;
|
---|
| 2003 | case LBS_DIFFUSE:
|
---|
| 2004 | src2op = GL_PRIMARY_COLOR;
|
---|
| 2005 | break;
|
---|
| 2006 | // XXX
|
---|
| 2007 | case LBS_SPECULAR:
|
---|
| 2008 | default:
|
---|
| 2009 | src2op = 0;
|
---|
| 2010 | }
|
---|
| 2011 |
|
---|
| 2012 | switch (bm.operation)
|
---|
| 2013 | {
|
---|
| 2014 | case LBX_SOURCE1:
|
---|
| 2015 | cmd = GL_REPLACE;
|
---|
| 2016 | break;
|
---|
| 2017 | case LBX_SOURCE2:
|
---|
| 2018 | cmd = GL_REPLACE;
|
---|
| 2019 | break;
|
---|
| 2020 | case LBX_MODULATE:
|
---|
| 2021 | cmd = GL_MODULATE;
|
---|
| 2022 | break;
|
---|
| 2023 | case LBX_MODULATE_X2:
|
---|
| 2024 | cmd = GL_MODULATE;
|
---|
| 2025 | break;
|
---|
| 2026 | case LBX_MODULATE_X4:
|
---|
| 2027 | cmd = GL_MODULATE;
|
---|
| 2028 | break;
|
---|
| 2029 | case LBX_ADD:
|
---|
| 2030 | cmd = GL_ADD;
|
---|
| 2031 | break;
|
---|
| 2032 | case LBX_ADD_SIGNED:
|
---|
| 2033 | cmd = GL_ADD_SIGNED;
|
---|
| 2034 | break;
|
---|
| 2035 | case LBX_SUBTRACT:
|
---|
| 2036 | cmd = GL_SUBTRACT;
|
---|
| 2037 | break;
|
---|
| 2038 | case LBX_BLEND_DIFFUSE_ALPHA:
|
---|
| 2039 | cmd = GL_INTERPOLATE;
|
---|
| 2040 | break;
|
---|
| 2041 | case LBX_BLEND_TEXTURE_ALPHA:
|
---|
| 2042 | cmd = GL_INTERPOLATE;
|
---|
| 2043 | break;
|
---|
| 2044 | case LBX_BLEND_CURRENT_ALPHA:
|
---|
| 2045 | cmd = GL_INTERPOLATE;
|
---|
| 2046 | break;
|
---|
| 2047 | case LBX_BLEND_MANUAL:
|
---|
| 2048 | cmd = GL_INTERPOLATE;
|
---|
| 2049 | break;
|
---|
| 2050 | case LBX_DOTPRODUCT:
|
---|
| 2051 | cmd = mCapabilities->hasCapability(RSC_DOT3)
|
---|
| 2052 | ? GL_DOT3_RGB : GL_MODULATE;
|
---|
| 2053 | break;
|
---|
| 2054 | default:
|
---|
| 2055 | cmd = 0;
|
---|
| 2056 | }
|
---|
| 2057 |
|
---|
| 2058 | glActiveTextureARB_ptr(GL_TEXTURE0 + stage);
|
---|
| 2059 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
---|
| 2060 |
|
---|
| 2061 | if (bm.blendType == LBT_COLOUR)
|
---|
| 2062 | {
|
---|
| 2063 | glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, cmd);
|
---|
| 2064 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB, src1op);
|
---|
| 2065 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB, src2op);
|
---|
| 2066 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_CONSTANT);
|
---|
| 2067 | }
|
---|
| 2068 | else
|
---|
| 2069 | {
|
---|
| 2070 | glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, cmd);
|
---|
| 2071 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, src1op);
|
---|
| 2072 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA, src2op);
|
---|
| 2073 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_CONSTANT);
|
---|
| 2074 | }
|
---|
| 2075 |
|
---|
| 2076 | float blendValue[4] = {0, 0, 0, bm.factor};
|
---|
| 2077 | switch (bm.operation)
|
---|
| 2078 | {
|
---|
| 2079 | case LBX_BLEND_DIFFUSE_ALPHA:
|
---|
| 2080 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_PRIMARY_COLOR);
|
---|
| 2081 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_PRIMARY_COLOR);
|
---|
| 2082 | break;
|
---|
| 2083 | case LBX_BLEND_TEXTURE_ALPHA:
|
---|
| 2084 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE);
|
---|
| 2085 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_TEXTURE);
|
---|
| 2086 | break;
|
---|
| 2087 | case LBX_BLEND_CURRENT_ALPHA:
|
---|
| 2088 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_PREVIOUS);
|
---|
| 2089 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_PREVIOUS);
|
---|
| 2090 | break;
|
---|
| 2091 | case LBX_BLEND_MANUAL:
|
---|
| 2092 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, blendValue);
|
---|
| 2093 | break;
|
---|
| 2094 | default:
|
---|
| 2095 | break;
|
---|
| 2096 | };
|
---|
| 2097 |
|
---|
| 2098 | switch (bm.operation)
|
---|
| 2099 | {
|
---|
| 2100 | case LBX_MODULATE_X2:
|
---|
| 2101 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
| 2102 | GL_RGB_SCALE : GL_ALPHA_SCALE, 2);
|
---|
| 2103 | break;
|
---|
| 2104 | case LBX_MODULATE_X4:
|
---|
| 2105 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
| 2106 | GL_RGB_SCALE : GL_ALPHA_SCALE, 4);
|
---|
| 2107 | break;
|
---|
| 2108 | default:
|
---|
| 2109 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
| 2110 | GL_RGB_SCALE : GL_ALPHA_SCALE, 1);
|
---|
| 2111 | break;
|
---|
| 2112 | }
|
---|
| 2113 |
|
---|
| 2114 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
|
---|
| 2115 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
|
---|
| 2116 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_ALPHA);
|
---|
| 2117 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
|
---|
| 2118 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
|
---|
| 2119 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA, GL_SRC_ALPHA);
|
---|
| 2120 | if(bm.source1 == LBS_MANUAL)
|
---|
| 2121 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, cv1);
|
---|
| 2122 | if (bm.source2 == LBS_MANUAL)
|
---|
| 2123 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, cv2);
|
---|
| 2124 |
|
---|
| 2125 | glActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
| 2126 | }
|
---|
| 2127 | //---------------------------------------------------------------------
|
---|
| 2128 | void GLRenderSystem::setGLLightPositionDirection(Light* lt, GLenum lightindex)
|
---|
| 2129 | {
|
---|
| 2130 | // Set position / direction
|
---|
| 2131 | Vector4 vec;
|
---|
| 2132 | // Use general 4D vector which is the same as GL's approach
|
---|
| 2133 | vec = lt->getAs4DVector();
|
---|
| 2134 |
|
---|
| 2135 | #if OGRE_DOUBLE_PRECISION
|
---|
| 2136 | // Must convert to float*
|
---|
| 2137 | float tmp[4] = {vec.x, vec.y, vec.z, vec.w};
|
---|
| 2138 | glLightfv(lightindex, GL_POSITION, tmp);
|
---|
| 2139 | #else
|
---|
| 2140 | glLightfv(lightindex, GL_POSITION, vec.val);
|
---|
| 2141 | #endif
|
---|
| 2142 | // Set spotlight direction
|
---|
| 2143 | if (lt->getType() == Light::LT_SPOTLIGHT)
|
---|
| 2144 | {
|
---|
| 2145 | vec = lt->getDerivedDirection();
|
---|
| 2146 | vec.w = 0.0;
|
---|
| 2147 | #if OGRE_DOUBLE_PRECISION
|
---|
| 2148 | // Must convert to float*
|
---|
| 2149 | float tmp2[4] = {vec.x, vec.y, vec.z, vec.w};
|
---|
| 2150 | glLightfv(lightindex, GL_SPOT_DIRECTION, tmp2);
|
---|
| 2151 | #else
|
---|
| 2152 | glLightfv(lightindex, GL_SPOT_DIRECTION, vec.val);
|
---|
| 2153 | #endif
|
---|
| 2154 | }
|
---|
| 2155 | }
|
---|
| 2156 | //---------------------------------------------------------------------
|
---|
| 2157 | void GLRenderSystem::setVertexDeclaration(VertexDeclaration* decl)
|
---|
| 2158 | {
|
---|
| 2159 | }
|
---|
| 2160 | //---------------------------------------------------------------------
|
---|
| 2161 | void GLRenderSystem::setVertexBufferBinding(VertexBufferBinding* binding)
|
---|
| 2162 | {
|
---|
| 2163 | }
|
---|
| 2164 | //---------------------------------------------------------------------
|
---|
| 2165 | void GLRenderSystem::_render(const RenderOperation& op)
|
---|
| 2166 | {
|
---|
| 2167 | // Guard
|
---|
| 2168 | OgreGuard ("GLRenderSystem::_render");
|
---|
| 2169 | // Call super class
|
---|
| 2170 | RenderSystem::_render(op);
|
---|
| 2171 |
|
---|
| 2172 | void* pBufferData = 0;
|
---|
| 2173 |
|
---|
| 2174 | const VertexDeclaration::VertexElementList& decl =
|
---|
| 2175 | op.vertexData->vertexDeclaration->getElements();
|
---|
| 2176 | VertexDeclaration::VertexElementList::const_iterator elem, elemEnd;
|
---|
| 2177 | elemEnd = decl.end();
|
---|
| 2178 |
|
---|
| 2179 | for (elem = decl.begin(); elem != elemEnd; ++elem)
|
---|
| 2180 | {
|
---|
| 2181 | HardwareVertexBufferSharedPtr vertexBuffer =
|
---|
| 2182 | op.vertexData->vertexBufferBinding->getBuffer(elem->getSource());
|
---|
| 2183 | if(mCapabilities->hasCapability(RSC_VBO))
|
---|
| 2184 | {
|
---|
| 2185 | glBindBufferARB_ptr(GL_ARRAY_BUFFER_ARB,
|
---|
| 2186 | static_cast<const GLHardwareVertexBuffer*>(vertexBuffer.get())->getGLBufferId());
|
---|
| 2187 | pBufferData = VBO_BUFFER_OFFSET(elem->getOffset());
|
---|
| 2188 | }
|
---|
| 2189 | else
|
---|
| 2190 | {
|
---|
| 2191 | pBufferData = static_cast<const GLDefaultHardwareVertexBuffer*>(vertexBuffer.get())->getDataPtr(elem->getOffset());
|
---|
| 2192 | }
|
---|
[193] | 2193 | if (op.vertexData->vertexStart)
|
---|
| 2194 | {
|
---|
| 2195 | pBufferData = static_cast<char*>(pBufferData) + op.vertexData->vertexStart * vertexBuffer->getVertexSize();
|
---|
| 2196 | }
|
---|
[97] | 2197 |
|
---|
| 2198 | unsigned int i = 0;
|
---|
| 2199 |
|
---|
| 2200 | switch(elem->getSemantic())
|
---|
| 2201 | {
|
---|
| 2202 | case VES_POSITION:
|
---|
| 2203 | glVertexPointer(VertexElement::getTypeCount(
|
---|
| 2204 | elem->getType()),
|
---|
| 2205 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2206 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2207 | pBufferData);
|
---|
| 2208 | glEnableClientState( GL_VERTEX_ARRAY );
|
---|
| 2209 | break;
|
---|
| 2210 | case VES_NORMAL:
|
---|
| 2211 | glNormalPointer(
|
---|
| 2212 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2213 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2214 | pBufferData);
|
---|
| 2215 | glEnableClientState( GL_NORMAL_ARRAY );
|
---|
| 2216 | break;
|
---|
| 2217 | case VES_DIFFUSE:
|
---|
| 2218 | glColorPointer(4,
|
---|
| 2219 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2220 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2221 | pBufferData);
|
---|
| 2222 | glEnableClientState( GL_COLOR_ARRAY );
|
---|
| 2223 | break;
|
---|
| 2224 | case VES_SPECULAR:
|
---|
| 2225 | glSecondaryColorPointerEXT_ptr(4,
|
---|
| 2226 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2227 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2228 | pBufferData);
|
---|
| 2229 | glEnableClientState( GL_SECONDARY_COLOR_ARRAY );
|
---|
| 2230 | break;
|
---|
| 2231 | case VES_TEXTURE_COORDINATES:
|
---|
| 2232 |
|
---|
[193] | 2233 | for (i = 0; i < OGRE_MAX_TEXTURE_COORD_SETS; i++)
|
---|
[97] | 2234 | {
|
---|
| 2235 | // Only set this texture unit's texcoord pointer if it
|
---|
| 2236 | // is supposed to be using this element's index
|
---|
| 2237 | if (mTextureCoordIndex[i] == elem->getIndex())
|
---|
| 2238 | {
|
---|
| 2239 | glClientActiveTextureARB_ptr(GL_TEXTURE0 + i);
|
---|
| 2240 | glTexCoordPointer(
|
---|
| 2241 | VertexElement::getTypeCount(elem->getType()),
|
---|
| 2242 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2243 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2244 | pBufferData);
|
---|
| 2245 | glEnableClientState( GL_TEXTURE_COORD_ARRAY );
|
---|
| 2246 | }
|
---|
| 2247 | }
|
---|
| 2248 | break;
|
---|
| 2249 | case VES_BLEND_INDICES:
|
---|
| 2250 | assert(mCapabilities->hasCapability(RSC_VERTEX_PROGRAM));
|
---|
| 2251 | glVertexAttribPointerARB_ptr(
|
---|
| 2252 | 7, // matrix indices are vertex attribute 7 (no def?)
|
---|
| 2253 | VertexElement::getTypeCount(elem->getType()),
|
---|
| 2254 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2255 | GL_FALSE, // normalisation disabled
|
---|
| 2256 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2257 | pBufferData);
|
---|
| 2258 | glEnableVertexAttribArrayARB_ptr(7);
|
---|
| 2259 | break;
|
---|
| 2260 | case VES_BLEND_WEIGHTS:
|
---|
| 2261 | assert(mCapabilities->hasCapability(RSC_VERTEX_PROGRAM));
|
---|
| 2262 | glVertexAttribPointerARB_ptr(
|
---|
| 2263 | 1, // weights are vertex attribute 1 (no def?)
|
---|
| 2264 | VertexElement::getTypeCount(elem->getType()),
|
---|
| 2265 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
| 2266 | GL_FALSE, // normalisation disabled
|
---|
| 2267 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
| 2268 | pBufferData);
|
---|
| 2269 | glEnableVertexAttribArrayARB_ptr(1);
|
---|
| 2270 | break;
|
---|
| 2271 | default:
|
---|
| 2272 | break;
|
---|
| 2273 | };
|
---|
| 2274 |
|
---|
| 2275 | }
|
---|
| 2276 |
|
---|
| 2277 | glClientActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
| 2278 |
|
---|
| 2279 | // Find the correct type to render
|
---|
| 2280 | GLint primType;
|
---|
| 2281 | switch (op.operationType)
|
---|
| 2282 | {
|
---|
| 2283 | case RenderOperation::OT_POINT_LIST:
|
---|
| 2284 | primType = GL_POINTS;
|
---|
| 2285 | break;
|
---|
| 2286 | case RenderOperation::OT_LINE_LIST:
|
---|
| 2287 | primType = GL_LINES;
|
---|
| 2288 | break;
|
---|
| 2289 | case RenderOperation::OT_LINE_STRIP:
|
---|
| 2290 | primType = GL_LINE_STRIP;
|
---|
| 2291 | break;
|
---|
| 2292 | case RenderOperation::OT_TRIANGLE_LIST:
|
---|
| 2293 | primType = GL_TRIANGLES;
|
---|
| 2294 | break;
|
---|
| 2295 | case RenderOperation::OT_TRIANGLE_STRIP:
|
---|
| 2296 | primType = GL_TRIANGLE_STRIP;
|
---|
| 2297 | break;
|
---|
| 2298 | case RenderOperation::OT_TRIANGLE_FAN:
|
---|
| 2299 | primType = GL_TRIANGLE_FAN;
|
---|
| 2300 | break;
|
---|
| 2301 | }
|
---|
| 2302 |
|
---|
| 2303 | if (op.useIndexes)
|
---|
| 2304 | {
|
---|
| 2305 | if(mCapabilities->hasCapability(RSC_VBO))
|
---|
| 2306 | {
|
---|
| 2307 | glBindBufferARB_ptr(GL_ELEMENT_ARRAY_BUFFER_ARB,
|
---|
| 2308 | static_cast<GLHardwareIndexBuffer*>(
|
---|
| 2309 | op.indexData->indexBuffer.get())->getGLBufferId());
|
---|
| 2310 |
|
---|
| 2311 | pBufferData = VBO_BUFFER_OFFSET(
|
---|
| 2312 | op.indexData->indexStart * op.indexData->indexBuffer->getIndexSize());
|
---|
| 2313 | }
|
---|
| 2314 | else
|
---|
| 2315 | {
|
---|
| 2316 | pBufferData = static_cast<GLDefaultHardwareIndexBuffer*>(
|
---|
| 2317 | op.indexData->indexBuffer.get())->getDataPtr(
|
---|
| 2318 | op.indexData->indexStart * op.indexData->indexBuffer->getIndexSize());
|
---|
| 2319 | }
|
---|
| 2320 |
|
---|
| 2321 | GLenum indexType = (op.indexData->indexBuffer->getType() == HardwareIndexBuffer::IT_16BIT) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
|
---|
| 2322 |
|
---|
| 2323 | glDrawElements(primType, op.indexData->indexCount, indexType, pBufferData);
|
---|
| 2324 |
|
---|
| 2325 | }
|
---|
| 2326 | else
|
---|
| 2327 | {
|
---|
[193] | 2328 | glDrawArrays(primType, 0, op.vertexData->vertexCount);
|
---|
[97] | 2329 | }
|
---|
| 2330 |
|
---|
| 2331 | glDisableClientState( GL_VERTEX_ARRAY );
|
---|
[193] | 2332 | for (int i = 0; i < OGRE_MAX_TEXTURE_COORD_SETS; i++)
|
---|
[97] | 2333 | {
|
---|
| 2334 | glClientActiveTextureARB_ptr(GL_TEXTURE0 + i);
|
---|
| 2335 | glDisableClientState( GL_TEXTURE_COORD_ARRAY );
|
---|
| 2336 | }
|
---|
| 2337 | glClientActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
| 2338 | glDisableClientState( GL_NORMAL_ARRAY );
|
---|
| 2339 | glDisableClientState( GL_COLOR_ARRAY );
|
---|
| 2340 | glDisableClientState( GL_SECONDARY_COLOR_ARRAY );
|
---|
| 2341 | if (mCapabilities->hasCapability(RSC_VERTEX_PROGRAM))
|
---|
| 2342 | {
|
---|
| 2343 | glDisableVertexAttribArrayARB_ptr(7); // disable indices
|
---|
| 2344 | glDisableVertexAttribArrayARB_ptr(1); // disable weights
|
---|
| 2345 | }
|
---|
[350] | 2346 |
|
---|
[115] | 2347 | glSecondaryColor3fEXT_ptr(0.0f, 0.0f, 0.0f);
|
---|
[97] | 2348 |
|
---|
| 2349 | // UnGuard
|
---|
| 2350 | OgreUnguard();
|
---|
| 2351 | }
|
---|
| 2352 | //---------------------------------------------------------------------
|
---|
| 2353 | void GLRenderSystem::setNormaliseNormals(bool normalise)
|
---|
| 2354 | {
|
---|
| 2355 | if (normalise)
|
---|
| 2356 | glEnable(GL_NORMALIZE);
|
---|
| 2357 | else
|
---|
| 2358 | glDisable(GL_NORMALIZE);
|
---|
| 2359 |
|
---|
| 2360 | }
|
---|
| 2361 | //---------------------------------------------------------------------
|
---|
| 2362 | void GLRenderSystem::bindGpuProgram(GpuProgram* prg)
|
---|
| 2363 | {
|
---|
| 2364 | GLGpuProgram* glprg = static_cast<GLGpuProgram*>(prg);
|
---|
| 2365 | glprg->bindProgram();
|
---|
| 2366 | if (glprg->getType() == GPT_VERTEX_PROGRAM)
|
---|
| 2367 | {
|
---|
| 2368 | mCurrentVertexProgram = glprg;
|
---|
| 2369 | }
|
---|
| 2370 | else
|
---|
| 2371 | {
|
---|
| 2372 | mCurrentFragmentProgram = glprg;
|
---|
| 2373 | }
|
---|
| 2374 | }
|
---|
| 2375 | //---------------------------------------------------------------------
|
---|
| 2376 | void GLRenderSystem::unbindGpuProgram(GpuProgramType gptype)
|
---|
| 2377 | {
|
---|
| 2378 |
|
---|
| 2379 | if (gptype == GPT_VERTEX_PROGRAM && mCurrentVertexProgram)
|
---|
| 2380 | {
|
---|
| 2381 | mCurrentVertexProgram->unbindProgram();
|
---|
| 2382 | mCurrentVertexProgram = 0;
|
---|
| 2383 | }
|
---|
| 2384 | else if (gptype == GPT_FRAGMENT_PROGRAM && mCurrentFragmentProgram)
|
---|
| 2385 | {
|
---|
| 2386 | mCurrentFragmentProgram->unbindProgram();
|
---|
| 2387 | mCurrentFragmentProgram = 0;
|
---|
| 2388 | }
|
---|
| 2389 |
|
---|
| 2390 |
|
---|
| 2391 | }
|
---|
| 2392 | //---------------------------------------------------------------------
|
---|
| 2393 | void GLRenderSystem::bindGpuProgramParameters(GpuProgramType gptype, GpuProgramParametersSharedPtr params)
|
---|
| 2394 | {
|
---|
| 2395 | if (gptype == GPT_VERTEX_PROGRAM)
|
---|
| 2396 | {
|
---|
| 2397 | mCurrentVertexProgram->bindProgramParameters(params);
|
---|
| 2398 | }
|
---|
| 2399 | else
|
---|
| 2400 | {
|
---|
| 2401 | mCurrentFragmentProgram->bindProgramParameters(params);
|
---|
| 2402 | }
|
---|
| 2403 | }
|
---|
| 2404 | //---------------------------------------------------------------------
|
---|
| 2405 | void GLRenderSystem::setClipPlanes(const PlaneList& clipPlanes)
|
---|
| 2406 | {
|
---|
| 2407 | size_t i;
|
---|
| 2408 | size_t numClipPlanes;
|
---|
| 2409 | GLdouble clipPlane[4];
|
---|
| 2410 |
|
---|
| 2411 | numClipPlanes = clipPlanes.size();
|
---|
| 2412 | for (i = 0; i < numClipPlanes; ++i)
|
---|
| 2413 | {
|
---|
| 2414 | GLenum clipPlaneId = static_cast<GLenum>(GL_CLIP_PLANE0 + i);
|
---|
| 2415 | const Plane& plane = clipPlanes[i];
|
---|
| 2416 |
|
---|
| 2417 | if (i >= GL_MAX_CLIP_PLANES)
|
---|
| 2418 | {
|
---|
| 2419 | OGRE_EXCEPT(0, "Unable to set clip plane",
|
---|
| 2420 | "GLRenderSystem::setClipPlanes");
|
---|
| 2421 | }
|
---|
| 2422 |
|
---|
| 2423 | clipPlane[0] = plane.normal.x;
|
---|
| 2424 | clipPlane[1] = plane.normal.y;
|
---|
| 2425 | clipPlane[2] = plane.normal.z;
|
---|
| 2426 | clipPlane[3] = -plane.d;
|
---|
| 2427 |
|
---|
| 2428 | glClipPlane(clipPlaneId, clipPlane);
|
---|
| 2429 | glEnable(clipPlaneId);
|
---|
| 2430 | }
|
---|
| 2431 |
|
---|
| 2432 | // disable remaining clip planes
|
---|
| 2433 | for ( ; i < 6/*GL_MAX_CLIP_PLANES*/; ++i)
|
---|
| 2434 | {
|
---|
| 2435 | glDisable(static_cast<GLenum>(GL_CLIP_PLANE0 + i));
|
---|
| 2436 | }
|
---|
| 2437 | }
|
---|
| 2438 | //---------------------------------------------------------------------
|
---|
| 2439 | void GLRenderSystem::setScissorTest(bool enabled, size_t left,
|
---|
| 2440 | size_t top, size_t right, size_t bottom)
|
---|
| 2441 | {
|
---|
| 2442 | // GL measures from the bottom, not the top
|
---|
| 2443 | size_t targetHeight = mActiveRenderTarget->getHeight();
|
---|
| 2444 | // Calculate the "lower-left" corner of the viewport
|
---|
| 2445 | GLsizei w, h, x, y;
|
---|
| 2446 |
|
---|
| 2447 | if (enabled)
|
---|
| 2448 | {
|
---|
| 2449 | glEnable(GL_SCISSOR_TEST);
|
---|
| 2450 | // NB GL uses width / height rather than right / bottom
|
---|
| 2451 | x = left;
|
---|
| 2452 | y = targetHeight - bottom;
|
---|
| 2453 | w = right - left;
|
---|
| 2454 | h = bottom - top;
|
---|
| 2455 | glScissor(x, y, w, h);
|
---|
| 2456 | }
|
---|
| 2457 | else
|
---|
| 2458 | {
|
---|
| 2459 | glDisable(GL_SCISSOR_TEST);
|
---|
| 2460 | // GL requires you to reset the scissor when disabling
|
---|
| 2461 | w = mActiveViewport->getActualWidth();
|
---|
| 2462 | h = mActiveViewport->getActualHeight();
|
---|
| 2463 | x = mActiveViewport->getActualLeft();
|
---|
| 2464 | y = targetHeight - mActiveViewport->getActualTop() - h;
|
---|
| 2465 | glScissor(x, y, w, h);
|
---|
| 2466 | }
|
---|
| 2467 | }
|
---|
| 2468 | //---------------------------------------------------------------------
|
---|
| 2469 | void GLRenderSystem::clearFrameBuffer(unsigned int buffers,
|
---|
| 2470 | const ColourValue& colour, Real depth, unsigned short stencil)
|
---|
| 2471 | {
|
---|
| 2472 |
|
---|
| 2473 | GLbitfield flags = 0;
|
---|
| 2474 | if (buffers & FBT_COLOUR)
|
---|
| 2475 | {
|
---|
| 2476 | flags |= GL_COLOR_BUFFER_BIT;
|
---|
| 2477 | }
|
---|
| 2478 | if (buffers & FBT_DEPTH)
|
---|
| 2479 | {
|
---|
| 2480 | flags |= GL_DEPTH_BUFFER_BIT;
|
---|
| 2481 | }
|
---|
| 2482 | if (buffers & FBT_STENCIL)
|
---|
| 2483 | {
|
---|
| 2484 | flags |= GL_STENCIL_BUFFER_BIT;
|
---|
| 2485 | }
|
---|
| 2486 |
|
---|
| 2487 |
|
---|
| 2488 | // Enable depth & colour buffer for writing if it isn't
|
---|
| 2489 |
|
---|
| 2490 | if (!mDepthWrite)
|
---|
| 2491 | {
|
---|
| 2492 | glDepthMask( GL_TRUE );
|
---|
| 2493 | }
|
---|
| 2494 | bool colourMask = !mColourWrite[0] || !mColourWrite[1]
|
---|
| 2495 | || !mColourWrite[2] || mColourWrite[3];
|
---|
| 2496 | if (colourMask)
|
---|
| 2497 | {
|
---|
| 2498 | glColorMask(true, true, true, true);
|
---|
| 2499 | }
|
---|
| 2500 | // Set values
|
---|
| 2501 | glClearColor(colour.r, colour.g, colour.b, colour.a);
|
---|
| 2502 | glClearDepth(depth);
|
---|
| 2503 | glClearStencil(stencil);
|
---|
| 2504 | // Clear buffers
|
---|
| 2505 | glClear(flags);
|
---|
| 2506 | // Reset depth write state if appropriate
|
---|
| 2507 | // Enable depth buffer for writing if it isn't
|
---|
| 2508 | if (!mDepthWrite)
|
---|
| 2509 | {
|
---|
| 2510 | glDepthMask( GL_FALSE );
|
---|
| 2511 | }
|
---|
| 2512 | if (colourMask)
|
---|
| 2513 | {
|
---|
| 2514 | glColorMask(mColourWrite[0], mColourWrite[1], mColourWrite[2], mColourWrite[3]);
|
---|
| 2515 | }
|
---|
| 2516 |
|
---|
| 2517 | }
|
---|
| 2518 | // ------------------------------------------------------------------
|
---|
| 2519 | void GLRenderSystem::_makeProjectionMatrix(Real left, Real right,
|
---|
| 2520 | Real bottom, Real top, Real nearPlane, Real farPlane, Matrix4& dest,
|
---|
| 2521 | bool forGpuProgram)
|
---|
| 2522 | {
|
---|
| 2523 | Real width = right - left;
|
---|
| 2524 | Real height = top - bottom;
|
---|
| 2525 | Real q, qn;
|
---|
| 2526 | if (farPlane == 0)
|
---|
| 2527 | {
|
---|
| 2528 | // Infinite far plane
|
---|
| 2529 | q = Frustum::INFINITE_FAR_PLANE_ADJUST - 1;
|
---|
| 2530 | qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 2);
|
---|
| 2531 | }
|
---|
| 2532 | else
|
---|
| 2533 | {
|
---|
| 2534 | q = -(farPlane + nearPlane) / (farPlane - nearPlane);
|
---|
| 2535 | qn = -2 * (farPlane * nearPlane) / (farPlane - nearPlane);
|
---|
| 2536 | }
|
---|
| 2537 | dest = Matrix4::ZERO;
|
---|
| 2538 | dest[0][0] = 2 * nearPlane / width;
|
---|
| 2539 | dest[0][2] = (right+left) / width;
|
---|
| 2540 | dest[1][1] = 2 * nearPlane / height;
|
---|
| 2541 | dest[1][2] = (top+bottom) / height;
|
---|
| 2542 | dest[2][2] = q;
|
---|
| 2543 | dest[2][3] = qn;
|
---|
| 2544 | dest[3][2] = -1;
|
---|
| 2545 | }
|
---|
[193] | 2546 |
|
---|
[97] | 2547 | // ------------------------------------------------------------------
|
---|
| 2548 | void GLRenderSystem::setClipPlane (ushort index, Real A, Real B, Real C, Real D)
|
---|
| 2549 | {
|
---|
| 2550 | if (ushort(mClipPlanes.size()) < index+1)
|
---|
| 2551 | mClipPlanes.resize(index+1);
|
---|
| 2552 | mClipPlanes[index] = Vector4 (A, B, C, D);
|
---|
| 2553 | GLdouble plane[4] = { A, B, C, D };
|
---|
| 2554 | glClipPlane (GL_CLIP_PLANE0 + index, plane);
|
---|
| 2555 | }
|
---|
| 2556 |
|
---|
| 2557 | // ------------------------------------------------------------------
|
---|
| 2558 | void GLRenderSystem::setGLClipPlanes() const
|
---|
| 2559 | {
|
---|
| 2560 | size_t size = mClipPlanes.size();
|
---|
| 2561 | for (size_t i=0; i<size; i++)
|
---|
| 2562 | {
|
---|
| 2563 | const Vector4 &p = mClipPlanes[i];
|
---|
| 2564 | GLdouble plane[4] = { p.x, p.y, p.z, p.w };
|
---|
| 2565 | glClipPlane (GL_CLIP_PLANE0 + i, plane);
|
---|
| 2566 | }
|
---|
| 2567 | }
|
---|
| 2568 |
|
---|
| 2569 | // ------------------------------------------------------------------
|
---|
| 2570 | void GLRenderSystem::enableClipPlane (ushort index, bool enable)
|
---|
| 2571 | {
|
---|
| 2572 | glEnable (GL_CLIP_PLANE0 + index);
|
---|
| 2573 | }
|
---|
| 2574 | //---------------------------------------------------------------------
|
---|
| 2575 | HardwareOcclusionQuery* GLRenderSystem::createHardwareOcclusionQuery(void)
|
---|
| 2576 | {
|
---|
| 2577 | return new GLHardwareOcclusionQuery();
|
---|
| 2578 | }
|
---|
| 2579 | //---------------------------------------------------------------------
|
---|
| 2580 | Real GLRenderSystem::getHorizontalTexelOffset(void)
|
---|
| 2581 | {
|
---|
| 2582 | // No offset in GL
|
---|
| 2583 | return 0.0f;
|
---|
| 2584 | }
|
---|
| 2585 | //---------------------------------------------------------------------
|
---|
| 2586 | Real GLRenderSystem::getVerticalTexelOffset(void)
|
---|
| 2587 | {
|
---|
| 2588 | // No offset in GL
|
---|
| 2589 | return 0.0f;
|
---|
| 2590 | }
|
---|
| 2591 | //---------------------------------------------------------------------
|
---|
| 2592 | void GLRenderSystem::_applyObliqueDepthProjection(Matrix4& matrix, const Plane& plane,
|
---|
| 2593 | bool forGpuProgram)
|
---|
| 2594 | {
|
---|
| 2595 | // Thanks to Eric Lenyel for posting this calculation at www.terathon.com
|
---|
| 2596 |
|
---|
| 2597 | // Calculate the clip-space corner point opposite the clipping plane
|
---|
| 2598 | // as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
|
---|
| 2599 | // transform it into camera space by multiplying it
|
---|
| 2600 | // by the inverse of the projection matrix
|
---|
| 2601 |
|
---|
| 2602 | Vector4 q;
|
---|
| 2603 | q.x = (Math::Sign(plane.normal.x) + matrix[0][2]) / matrix[0][0];
|
---|
| 2604 | q.y = (Math::Sign(plane.normal.y) + matrix[1][2]) / matrix[1][1];
|
---|
| 2605 | q.z = -1.0F;
|
---|
| 2606 | q.w = (1.0F + matrix[2][2]) / matrix[2][3];
|
---|
| 2607 |
|
---|
| 2608 | // Calculate the scaled plane vector
|
---|
| 2609 | Vector4 clipPlane4d(plane.normal.x, plane.normal.y, plane.normal.z, plane.d);
|
---|
| 2610 | Vector4 c = clipPlane4d * (2.0F / (clipPlane4d.dotProduct(q)));
|
---|
| 2611 |
|
---|
| 2612 | // Replace the third row of the projection matrix
|
---|
| 2613 | matrix[2][0] = c.x;
|
---|
| 2614 | matrix[2][1] = c.y;
|
---|
| 2615 | matrix[2][2] = c.z + 1.0F;
|
---|
| 2616 | matrix[2][3] = c.w;
|
---|
| 2617 | }
|
---|
| 2618 | //---------------------------------------------------------------------
|
---|
| 2619 | void GLRenderSystem::_oneTimeContextInitialization()
|
---|
| 2620 | {
|
---|
| 2621 | // Set nicer lighting model -- d3d9 has this by default
|
---|
| 2622 | glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
|
---|
| 2623 | glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
|
---|
[115] | 2624 | glEnable(GL_COLOR_SUM);
|
---|
[193] | 2625 | glDisable(GL_DITHER);
|
---|
[115] | 2626 |
|
---|
[97] | 2627 | // Check for FSAA
|
---|
| 2628 | // Enable the extension if it was enabled by the GLSupport
|
---|
| 2629 | if (mGLSupport->checkExtension("GL_ARB_multisample"))
|
---|
| 2630 | {
|
---|
| 2631 | int fsaa_active = false;
|
---|
| 2632 | glGetIntegerv(GL_SAMPLE_BUFFERS_ARB,(GLint*)&fsaa_active);
|
---|
| 2633 | if(fsaa_active)
|
---|
| 2634 | {
|
---|
| 2635 | glEnable(GL_MULTISAMPLE_ARB);
|
---|
| 2636 | LogManager::getSingleton().logMessage("Using FSAA from GL_ARB_multisample extension.");
|
---|
| 2637 | }
|
---|
| 2638 | }
|
---|
| 2639 | }
|
---|
| 2640 | //---------------------------------------------------------------------
|
---|
| 2641 | void GLRenderSystem::_setRenderTarget(RenderTarget *target)
|
---|
| 2642 | {
|
---|
| 2643 | mActiveRenderTarget = target;
|
---|
| 2644 | // Switch context if different from current one
|
---|
| 2645 | ContextMap::iterator i = mContextMap.find(target);
|
---|
| 2646 | if(i != mContextMap.end() && mCurrentContext != i->second) {
|
---|
| 2647 | mCurrentContext->endCurrent();
|
---|
| 2648 | mCurrentContext = i->second;
|
---|
| 2649 | // Check if the context has already done one-time initialisation
|
---|
| 2650 | if(!mCurrentContext->getInitialized()) {
|
---|
| 2651 | _oneTimeContextInitialization();
|
---|
| 2652 | mCurrentContext->setInitialized();
|
---|
| 2653 | }
|
---|
| 2654 | mCurrentContext->setCurrent();
|
---|
| 2655 | }
|
---|
| 2656 | }
|
---|
| 2657 | //---------------------------------------------------------------------
|
---|
| 2658 | void GLRenderSystem::_registerContext(RenderTarget *target, GLContext *context)
|
---|
| 2659 | {
|
---|
| 2660 | mContextMap[target] = context;
|
---|
| 2661 | }
|
---|
| 2662 | //---------------------------------------------------------------------
|
---|
| 2663 | void GLRenderSystem::_unregisterContext(RenderTarget *target)
|
---|
| 2664 | {
|
---|
| 2665 | ContextMap::iterator i = mContextMap.find(target);
|
---|
| 2666 | if(i != mContextMap.end() && mCurrentContext == i->second) {
|
---|
| 2667 | // Change the context to something else so that a valid context
|
---|
| 2668 | // remains active. When this is the main context being unregistered,
|
---|
| 2669 | // we set the main context to 0.
|
---|
| 2670 | if(mCurrentContext != mMainContext) {
|
---|
| 2671 | mCurrentContext->endCurrent();
|
---|
| 2672 | mCurrentContext = mMainContext;
|
---|
| 2673 | mCurrentContext->setCurrent();
|
---|
| 2674 | } else {
|
---|
| 2675 | mMainContext = 0;
|
---|
| 2676 | }
|
---|
| 2677 | }
|
---|
| 2678 | mContextMap.erase(target);
|
---|
| 2679 | }
|
---|
| 2680 | //---------------------------------------------------------------------
|
---|
| 2681 | GLContext *GLRenderSystem::_getMainContext() {
|
---|
| 2682 | return mMainContext;
|
---|
| 2683 | }
|
---|
| 2684 | //---------------------------------------------------------------------
|
---|
| 2685 | Real GLRenderSystem::getMinimumDepthInputValue(void)
|
---|
| 2686 | {
|
---|
| 2687 | // Range [-1.0f, 1.0f]
|
---|
| 2688 | return -1.0f;
|
---|
| 2689 | }
|
---|
| 2690 | //---------------------------------------------------------------------
|
---|
| 2691 | Real GLRenderSystem::getMaximumDepthInputValue(void)
|
---|
| 2692 | {
|
---|
| 2693 | // Range [-1.0f, 1.0f]
|
---|
| 2694 | return 1.0f;
|
---|
| 2695 | }
|
---|
| 2696 |
|
---|
| 2697 | }
|
---|