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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60 | GL_SecondaryColor3fEXT_Func glSecondaryColor3fEXT_ptr;
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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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104 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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105 | GL_GetQueryivARB_Func glGetQueryivARB_ptr;
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106 | GL_GetQueryObjectivARB_Func glGetQueryObjectivARB_ptr;
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107 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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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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151 | : mExternalWindowHandle(0), mDepthWrite(true), mHardwareBufferManager(0),
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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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175 | mTextureCoordIndex[i] = 0;
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176 | }
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177 |
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178 | for (i = 0; i < OGRE_MAX_TEXTURE_LAYERS; i++)
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179 | {
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180 | mTextureTypes[i] = 0;
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181 | }
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182 |
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183 | mActiveRenderTarget = 0;
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184 | mCurrentContext = 0;
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185 | mMainContext = 0;
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186 |
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187 | mGLInitialized = false;
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188 |
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189 | glActiveTextureARB_ptr = 0;
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190 | glClientActiveTextureARB_ptr = 0;
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191 | glSecondaryColorPointerEXT_ptr = 0;
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192 | glSecondaryColor3fEXT_ptr = 0;
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193 | glGenBuffersARB_ptr = 0;
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194 | glBindBufferARB_ptr = 0;
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195 | glDeleteBuffersARB_ptr = 0;
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196 | glMapBufferARB_ptr = 0;
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197 | glUnmapBufferARB_ptr = 0;
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198 | glBufferDataARB_ptr = 0;
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199 | glBufferSubDataARB_ptr = 0;
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200 | glGetBufferSubDataARB_ptr = 0;
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201 | glGenProgramsARB_ptr = 0;
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202 | glDeleteProgramsARB_ptr = 0;
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203 | glBindProgramARB_ptr = 0;
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204 | glProgramStringARB_ptr = 0;
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205 | glProgramLocalParameter4fvARB_ptr = 0;
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206 | glProgramParameter4fvNV_ptr = 0;
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207 | glCombinerStageParameterfvNV_ptr = 0;
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208 | glCombinerParameterfvNV_ptr = 0;
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209 | glCombinerParameteriNV_ptr = 0;
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210 | glGetProgramivARB_ptr = 0;
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211 | glLoadProgramNV_ptr = 0;
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212 | glCombinerInputNV_ptr = 0;
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213 | glCombinerOutputNV_ptr = 0;
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214 | glFinalCombinerInputNV_ptr = 0;
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215 | glTrackMatrixNV_ptr = 0;
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216 | glActiveStencilFaceEXT_ptr = 0;
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217 | glGenOcclusionQueriesNV_ptr = 0;
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218 | glDeleteOcclusionQueriesNV_ptr = 0;
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219 | glBeginOcclusionQueryNV_ptr = 0;
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220 | glEndOcclusionQueryNV_ptr = 0;
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221 | glGetOcclusionQueryuivNV_ptr = 0;
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222 | glGenQueriesARB_ptr = 0;
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223 | glDeleteQueriesARB_ptr = 0;
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224 | glBeginQueryARB_ptr = 0;
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225 | glEndQueryARB_ptr = 0;
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226 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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227 | glGetQueryivARB_ptr = 0;
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228 | glGetQueryObjectivARB_ptr = 0;
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229 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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230 | glGetQueryObjectuivARB_ptr = 0;
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231 |
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232 | mCurrentLights = 0;
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233 | mMinFilter = FO_LINEAR;
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234 | mMipFilter = FO_POINT;
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235 | mCurrentVertexProgram = 0;
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236 | mCurrentFragmentProgram = 0;
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237 |
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238 | mClipPlanes.reserve(6);
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239 |
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240 | OgreUnguard();
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241 | }
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242 |
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243 | GLRenderSystem::~GLRenderSystem()
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244 | {
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245 | shutdown();
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246 |
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247 | // Destroy render windows
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248 | RenderTargetMap::iterator i;
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249 | for (i = mRenderTargets.begin(); i != mRenderTargets.end(); ++i)
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250 | {
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251 | delete i->second;
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252 | }
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253 | mRenderTargets.clear();
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254 |
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255 | if (mTextureManager)
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256 | delete mTextureManager;
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257 |
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258 | delete mCapabilities;
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259 | delete mGLSupport;
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260 | }
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261 |
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262 | const String& GLRenderSystem::getName(void) const
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263 | {
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264 | static String strName("OpenGL Rendering Subsystem");
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265 | return strName;
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266 | }
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267 |
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268 | void GLRenderSystem::initConfigOptions(void)
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269 | {
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270 | OgreGuard("GLRenderSystem::initConfigOptions");
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271 | mGLSupport->addConfig();
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272 | OgreUnguard();
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273 | }
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274 |
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275 | ConfigOptionMap& GLRenderSystem::getConfigOptions(void)
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276 | {
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277 | return mGLSupport->getConfigOptions();
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278 | }
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279 |
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280 | void GLRenderSystem::setConfigOption(const String &name, const String &value)
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281 | {
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282 | mGLSupport->setConfigOption(name, value);
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283 | }
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284 |
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285 | String GLRenderSystem::validateConfigOptions(void)
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286 | {
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287 | // XXX Return an error string if something is invalid
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288 | return mGLSupport->validateConfig();
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289 | }
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290 |
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291 | RenderWindow* GLRenderSystem::initialise(bool autoCreateWindow, const String& windowTitle)
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292 | {
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293 | mGLSupport->start();
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294 |
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295 | RenderWindow* autoWindow = mGLSupport->createWindow(autoCreateWindow, this, windowTitle);
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296 |
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297 |
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298 | _setCullingMode( mCullingMode );
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299 |
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300 | return autoWindow;
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301 | }
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302 |
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303 | void GLRenderSystem::initGL(void)
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304 | {
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305 | mGLSupport->initialiseExtensions();
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306 |
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307 | LogManager::getSingleton().logMessage(
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308 | "***************************\n"
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309 | "*** GL Renderer Started ***\n"
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310 | "***************************");
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311 |
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312 |
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313 | // Check for hardware mipmapping support.
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314 | // Note: This is disabled for ATI cards until they fix their drivers
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315 | if(mGLSupport->getGLVendor() != "ATI" &&
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316 | (mGLSupport->checkMinGLVersion("1.4.0") ||
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317 | mGLSupport->checkExtension("GL_SGIS_generate_mipmap")))
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318 | {
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319 | mCapabilities->setCapability(RSC_AUTOMIPMAP);
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320 | }
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321 |
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322 | // Check for blending support
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323 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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324 | mGLSupport->checkExtension("GL_ARB_texture_env_combine") ||
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325 | mGLSupport->checkExtension("GL_EXT_texture_env_combine"))
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326 | {
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327 | mCapabilities->setCapability(RSC_BLENDING);
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328 | }
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329 |
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330 | // Check for Multitexturing support and set number of texture units
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331 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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332 | mGLSupport->checkExtension("GL_ARB_multitexture"))
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333 | {
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334 | GLint units;
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335 | glGetIntegerv( GL_MAX_TEXTURE_UNITS, &units );
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336 |
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337 | mCapabilities->setNumTextureUnits(units);
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338 | }
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339 | else
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340 | {
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341 | // If no multitexture support then set one texture unit
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342 | mCapabilities->setNumTextureUnits(1);
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343 | }
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344 |
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345 | // Check for Anisotropy support
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346 | if(mGLSupport->checkExtension("GL_EXT_texture_filter_anisotropic"))
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347 | {
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348 | mCapabilities->setCapability(RSC_ANISOTROPY);
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349 | }
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350 |
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351 | // Check for DOT3 support
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352 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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353 | mGLSupport->checkExtension("GL_ARB_texture_env_dot3") ||
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354 | mGLSupport->checkExtension("GL_EXT_texture_env_dot3"))
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355 | {
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356 | mCapabilities->setCapability(RSC_DOT3);
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357 | }
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358 |
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359 | // Check for cube mapping
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360 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
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361 | mGLSupport->checkExtension("GL_ARB_texture_cube_map") ||
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362 | mGLSupport->checkExtension("GL_EXT_texture_cube_map"))
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363 | {
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364 | mCapabilities->setCapability(RSC_CUBEMAPPING);
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365 | }
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366 |
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367 | // Check for hardware stencil support and set bit depth
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368 | GLint stencil;
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369 | glGetIntegerv(GL_STENCIL_BITS,&stencil);
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370 |
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371 | if(stencil)
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372 | {
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373 | mCapabilities->setCapability(RSC_HWSTENCIL);
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374 | mCapabilities->setStencilBufferBitDepth(stencil);
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375 | }
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376 |
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377 | // Check for VBO support
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378 | if(mGLSupport->checkExtension("GL_ARB_vertex_buffer_object"))
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379 | {
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380 | mCapabilities->setCapability(RSC_VBO);
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381 |
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382 | mHardwareBufferManager = new GLHardwareBufferManager;
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383 | }
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384 | else
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385 | {
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386 | mHardwareBufferManager = new GLDefaultHardwareBufferManager;
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387 | }
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388 |
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389 | // XXX Need to check for nv2 support and make a program manager for it
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390 | // XXX Probably nv1 as well for older cards
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391 | // GPU Program Manager setup
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392 | mGpuProgramManager = new GLGpuProgramManager();
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393 |
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394 | if(mGLSupport->checkExtension("GL_ARB_vertex_program"))
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395 | {
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396 | mCapabilities->setCapability(RSC_VERTEX_PROGRAM);
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397 |
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398 | // Vertex Program Properties
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399 | mCapabilities->setMaxVertexProgramVersion("arbvp1");
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400 | mCapabilities->setVertexProgramConstantBoolCount(0);
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401 | mCapabilities->setVertexProgramConstantIntCount(0);
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402 | mCapabilities->setVertexProgramConstantFloatCount(
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403 | GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB);
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404 |
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405 | mGpuProgramManager->_pushSyntaxCode("arbvp1");
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406 | mGpuProgramManager->registerProgramFactory("arbvp1", createGLArbGpuProgram);
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407 | }
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408 |
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409 | if (mGLSupport->checkExtension("GL_NV_register_combiners2") &&
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410 | mGLSupport->checkExtension("GL_NV_texture_shader"))
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411 | {
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412 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
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413 | mCapabilities->setMaxFragmentProgramVersion("fp20");
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414 |
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415 | mGpuProgramManager->_pushSyntaxCode("fp20");
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416 | mGpuProgramManager->registerProgramFactory("fp20", createGLGpuNvparseProgram);
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417 | }
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418 |
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419 |
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420 | // NFZ - check for ATI fragment shader support
|
---|
421 | if (mGLSupport->checkExtension("GL_ATI_fragment_shader"))
|
---|
422 | {
|
---|
423 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
424 | mCapabilities->setMaxFragmentProgramVersion("ps_1_4");
|
---|
425 | // no boolean params allowed
|
---|
426 | mCapabilities->setFragmentProgramConstantBoolCount(0);
|
---|
427 | // no integer params allowed
|
---|
428 | mCapabilities->setFragmentProgramConstantIntCount(0);
|
---|
429 |
|
---|
430 | // only 8 Vector4 constant floats supported
|
---|
431 | mCapabilities->setFragmentProgramConstantFloatCount(8);
|
---|
432 |
|
---|
433 | mGpuProgramManager->_pushSyntaxCode("ps_1_4");
|
---|
434 | mGpuProgramManager->_pushSyntaxCode("ps_1_3");
|
---|
435 | mGpuProgramManager->_pushSyntaxCode("ps_1_2");
|
---|
436 | mGpuProgramManager->_pushSyntaxCode("ps_1_1");
|
---|
437 |
|
---|
438 | mGpuProgramManager->registerProgramFactory("ps_1_4", createGL_ATI_FS_GpuProgram);
|
---|
439 | mGpuProgramManager->registerProgramFactory("ps_1_3", createGL_ATI_FS_GpuProgram);
|
---|
440 | mGpuProgramManager->registerProgramFactory("ps_1_2", createGL_ATI_FS_GpuProgram);
|
---|
441 | mGpuProgramManager->registerProgramFactory("ps_1_1", createGL_ATI_FS_GpuProgram);
|
---|
442 | }
|
---|
443 |
|
---|
444 |
|
---|
445 | if (mGLSupport->checkExtension("GL_ARB_fragment_program"))
|
---|
446 | {
|
---|
447 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
448 | // Fragment Program Properties
|
---|
449 | mCapabilities->setMaxFragmentProgramVersion("arbfp1");
|
---|
450 | mCapabilities->setFragmentProgramConstantBoolCount(0);
|
---|
451 | mCapabilities->setFragmentProgramConstantIntCount(0);
|
---|
452 | mCapabilities->setFragmentProgramConstantFloatCount(
|
---|
453 | GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB);
|
---|
454 |
|
---|
455 | mGpuProgramManager->_pushSyntaxCode("arbfp1");
|
---|
456 | mGpuProgramManager->registerProgramFactory("arbfp1", createGLArbGpuProgram);
|
---|
457 | }
|
---|
458 |
|
---|
459 | // NFZ - check if GLSL is supported
|
---|
460 | if ( mGLSupport->checkExtension("GL_ARB_shading_language_100") &&
|
---|
461 | mGLSupport->checkExtension("GL_ARB_shader_objects") &&
|
---|
462 | mGLSupport->checkExtension("GL_ARB_fragment_shader") &&
|
---|
463 | mGLSupport->checkExtension("GL_ARB_vertex_shader") )
|
---|
464 | {
|
---|
465 | // NFZ - check for GLSL vertex and fragment shader support successful
|
---|
466 | mGpuProgramManager->_pushSyntaxCode("glsl");
|
---|
467 | LogManager::getSingleton().logMessage("GLSL support detected");
|
---|
468 | }
|
---|
469 |
|
---|
470 | // Check for texture compression
|
---|
471 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
472 | mGLSupport->checkExtension("GL_ARB_texture_compression"))
|
---|
473 | {
|
---|
474 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION);
|
---|
475 |
|
---|
476 | // Check for dxt compression
|
---|
477 | if(mGLSupport->checkExtension("GL_EXT_texture_compression_s3tc"))
|
---|
478 | {
|
---|
479 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION_DXT);
|
---|
480 | }
|
---|
481 | // Check for vtc compression
|
---|
482 | if(mGLSupport->checkExtension("GL_NV_texture_compression_vtc"))
|
---|
483 | {
|
---|
484 | mCapabilities->setCapability(RSC_TEXTURE_COMPRESSION_VTC);
|
---|
485 | }
|
---|
486 | }
|
---|
487 |
|
---|
488 | // Scissor test is standard in GL 1.2 (is it emulated on some cards though?)
|
---|
489 | mCapabilities->setCapability(RSC_SCISSOR_TEST);
|
---|
490 | // As are user clipping planes
|
---|
491 | mCapabilities->setCapability(RSC_USER_CLIP_PLANES);
|
---|
492 |
|
---|
493 | // 2-sided stencil?
|
---|
494 | if (mGLSupport->checkExtension("GL_EXT_stencil_two_side"))
|
---|
495 | {
|
---|
496 | mCapabilities->setCapability(RSC_TWO_SIDED_STENCIL);
|
---|
497 | }
|
---|
498 | // stencil wrapping?
|
---|
499 | if (mGLSupport->checkExtension("GL_EXT_stencil_wrap"))
|
---|
500 | {
|
---|
501 | mCapabilities->setCapability(RSC_STENCIL_WRAP);
|
---|
502 | }
|
---|
503 |
|
---|
504 | // Check for hardware occlusion support
|
---|
505 | if(mGLSupport->checkExtension("GL_NV_occlusion_query"))
|
---|
506 | {
|
---|
507 | mCapabilities->setCapability(RSC_HWOCCLUSION);
|
---|
508 | }
|
---|
509 |
|
---|
510 | // UBYTE4 always supported
|
---|
511 | mCapabilities->setCapability(RSC_VERTEX_FORMAT_UBYTE4);
|
---|
512 |
|
---|
513 | // Inifinite far plane always supported
|
---|
514 | mCapabilities->setCapability(RSC_INFINITE_FAR_PLANE);
|
---|
515 |
|
---|
516 | // Check for non-power-of-2 texture support
|
---|
517 | if(mGLSupport->checkExtension("GL_ARB_texture_non_power_of_two"))
|
---|
518 | {
|
---|
519 | mCapabilities->setCapability(RSC_NON_POWER_OF_2_TEXTURES);
|
---|
520 | }
|
---|
521 |
|
---|
522 | // Check for Float textures
|
---|
523 | if(mGLSupport->checkExtension("GL_ATI_texture_float") ||
|
---|
524 | // mGLSupport->checkExtension("GL_NV_float_buffer") ||
|
---|
525 | mGLSupport->checkExtension("GL_ARB_texture_float"))
|
---|
526 | {
|
---|
527 | mCapabilities->setCapability(RSC_TEXTURE_FLOAT);
|
---|
528 | }
|
---|
529 |
|
---|
530 | // 3D textures should be supported by GL 1.2, which is our minimum version
|
---|
531 | mCapabilities->setCapability(RSC_TEXTURE_3D);
|
---|
532 |
|
---|
533 | // Check for GLSupport specific extensions
|
---|
534 | mGLSupport->initialiseCapabilities(*mCapabilities);
|
---|
535 |
|
---|
536 | // Get extension function pointers
|
---|
537 | glActiveTextureARB_ptr =
|
---|
538 | (GL_ActiveTextureARB_Func)mGLSupport->getProcAddress("glActiveTextureARB");
|
---|
539 | glClientActiveTextureARB_ptr =
|
---|
540 | (GL_ClientActiveTextureARB_Func)mGLSupport->getProcAddress("glClientActiveTextureARB");
|
---|
541 | glSecondaryColorPointerEXT_ptr =
|
---|
542 | (GL_SecondaryColorPointerEXT_Func)mGLSupport->getProcAddress("glSecondaryColorPointerEXT");
|
---|
543 | glSecondaryColor3fEXT_ptr =
|
---|
544 | (GL_SecondaryColor3fEXT_Func)mGLSupport->getProcAddress("glSecondaryColor3fEXT");
|
---|
545 | glGenBuffersARB_ptr =
|
---|
546 | (GL_GenBuffersARB_Func)mGLSupport->getProcAddress("glGenBuffersARB");
|
---|
547 | glBindBufferARB_ptr =
|
---|
548 | (GL_BindBufferARB_Func)mGLSupport->getProcAddress("glBindBufferARB");
|
---|
549 | glDeleteBuffersARB_ptr =
|
---|
550 | (GL_DeleteBuffersARB_Func)mGLSupport->getProcAddress("glDeleteBuffersARB");
|
---|
551 | glMapBufferARB_ptr =
|
---|
552 | (GL_MapBufferARB_Func)mGLSupport->getProcAddress("glMapBufferARB");
|
---|
553 | glUnmapBufferARB_ptr =
|
---|
554 | (GL_UnmapBufferARB_Func)mGLSupport->getProcAddress("glUnmapBufferARB");
|
---|
555 | glBufferDataARB_ptr =
|
---|
556 | (GL_BufferDataARB_Func)mGLSupport->getProcAddress("glBufferDataARB");
|
---|
557 | glBufferSubDataARB_ptr =
|
---|
558 | (GL_BufferSubDataARB_Func)mGLSupport->getProcAddress("glBufferSubDataARB");
|
---|
559 | glGetBufferSubDataARB_ptr =
|
---|
560 | (GL_GetBufferSubDataARB_Func)mGLSupport->getProcAddress("glGetBufferSubDataARB");
|
---|
561 | glGenProgramsARB_ptr =
|
---|
562 | (GL_GenProgramsARB_Func)mGLSupport->getProcAddress("glGenProgramsARB");
|
---|
563 | glDeleteProgramsARB_ptr =
|
---|
564 | (GL_DeleteProgramsARB_Func)mGLSupport->getProcAddress("glDeleteProgramsARB");
|
---|
565 | glBindProgramARB_ptr =
|
---|
566 | (GL_BindProgramARB_Func)mGLSupport->getProcAddress("glBindProgramARB");
|
---|
567 | glProgramStringARB_ptr =
|
---|
568 | (GL_ProgramStringARB_Func)mGLSupport->getProcAddress("glProgramStringARB");
|
---|
569 | glProgramLocalParameter4fvARB_ptr =
|
---|
570 | (GL_ProgramLocalParameter4fvARB_Func)mGLSupport->getProcAddress("glProgramLocalParameter4fvARB");
|
---|
571 | glProgramParameter4fvNV_ptr =
|
---|
572 | (GL_ProgramParameter4fvNV_Func)mGLSupport->getProcAddress("glProgramParameter4fvNV");
|
---|
573 | glVertexAttribPointerARB_ptr =
|
---|
574 | (GL_VertexAttribPointerARB_Func)mGLSupport->getProcAddress("glVertexAttribPointerARB");
|
---|
575 | glEnableVertexAttribArrayARB_ptr =
|
---|
576 | (GL_EnableVertexAttribArrayARB_Func)mGLSupport->getProcAddress("glEnableVertexAttribArrayARB");
|
---|
577 | glDisableVertexAttribArrayARB_ptr =
|
---|
578 | (GL_DisableVertexAttribArrayARB_Func)mGLSupport->getProcAddress("glDisableVertexAttribArrayARB");
|
---|
579 | glCombinerStageParameterfvNV_ptr =
|
---|
580 | (GL_CombinerStageParameterfvNV_Func)mGLSupport->getProcAddress("glCombinerStageParameterfvNV");
|
---|
581 | glCombinerParameterfvNV_ptr =
|
---|
582 | (GL_CombinerParameterfvNV_Func)mGLSupport->getProcAddress("glCombinerParameterfvNV");
|
---|
583 | glCombinerParameteriNV_ptr = (GL_CombinerParameteriNV_Func)mGLSupport->getProcAddress("glCombinerParameteriNV");
|
---|
584 | glGetProgramivARB_ptr =
|
---|
585 | (GL_GetProgramivARB_Func)mGLSupport->getProcAddress("glGetProgramivARB");
|
---|
586 | glLoadProgramNV_ptr =
|
---|
587 | (GL_LoadProgramNV_Func)mGLSupport->getProcAddress("glLoadProgramNV");
|
---|
588 | glCombinerInputNV_ptr =
|
---|
589 | (GL_CombinerInputNV_Func)mGLSupport->getProcAddress("glCombinerInputNV");
|
---|
590 | glCombinerOutputNV_ptr =
|
---|
591 | (GL_CombinerOutputNV_Func)mGLSupport->getProcAddress("glCombinerOutputNV");
|
---|
592 | glFinalCombinerInputNV_ptr =
|
---|
593 | (GL_FinalCombinerInputNV_Func)mGLSupport->getProcAddress("glFinalCombinerInputNV");
|
---|
594 | glTrackMatrixNV_ptr =
|
---|
595 | (GL_TrackMatrixNV_Func)mGLSupport->getProcAddress("glTrackMatrixNV");
|
---|
596 | glCompressedTexImage1DARB_ptr =
|
---|
597 | (PFNGLCOMPRESSEDTEXIMAGE1DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage1DARB");
|
---|
598 | glCompressedTexImage2DARB_ptr =
|
---|
599 | (PFNGLCOMPRESSEDTEXIMAGE2DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage2DARB");
|
---|
600 | glCompressedTexImage3DARB_ptr =
|
---|
601 | (PFNGLCOMPRESSEDTEXIMAGE3DARBPROC)mGLSupport->getProcAddress("glCompressedTexImage3DARB");
|
---|
602 | glCompressedTexSubImage1DARB_ptr =
|
---|
603 | (PFNGLCOMPRESSEDTEXSUBIMAGE1DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage1DARB");
|
---|
604 | glCompressedTexSubImage2DARB_ptr =
|
---|
605 | (PFNGLCOMPRESSEDTEXSUBIMAGE2DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage2DARB");
|
---|
606 | glCompressedTexSubImage3DARB_ptr =
|
---|
607 | (PFNGLCOMPRESSEDTEXSUBIMAGE3DARBPROC)mGLSupport->getProcAddress("glCompressedTexSubImage3DARB");
|
---|
608 | glGetCompressedTexImageARB_ptr =
|
---|
609 | (PFNGLGETCOMPRESSEDTEXIMAGEARBPROC)mGLSupport->getProcAddress("glGetCompressedTexImageARB");
|
---|
610 | InitATIFragmentShaderExtensions(*mGLSupport);
|
---|
611 | InitGLShaderLanguageExtensions(*mGLSupport);
|
---|
612 | glActiveStencilFaceEXT_ptr =
|
---|
613 | (GL_ActiveStencilFaceEXT_Func)mGLSupport->getProcAddress("glActiveStencilFaceEXT");
|
---|
614 | glGenOcclusionQueriesNV_ptr =
|
---|
615 | (GL_GenOcclusionQueriesNV_Func)mGLSupport->getProcAddress("glGenOcclusionQueriesNV");
|
---|
616 | glDeleteOcclusionQueriesNV_ptr =
|
---|
617 | (GL_DeleteOcclusionQueriesNV_Func)mGLSupport->getProcAddress("glDeleteOcclusionQueriesNV");
|
---|
618 | glBeginOcclusionQueryNV_ptr =
|
---|
619 | (GL_BeginOcclusionQueryNV_Func)mGLSupport->getProcAddress("glBeginOcclusionQueryNV");
|
---|
620 | glEndOcclusionQueryNV_ptr =
|
---|
621 | (GL_EndOcclusionQueryNV_Func)mGLSupport->getProcAddress("glEndOcclusionQueryNV");
|
---|
622 | glGetOcclusionQueryuivNV_ptr =
|
---|
623 | (GL_GetOcclusionQueryuivNV_Func)mGLSupport->getProcAddress("glGetOcclusionQueryuivNV");
|
---|
624 |
|
---|
625 | glGenQueriesARB_ptr =
|
---|
626 | (GL_GenQueriesARB_Func)mGLSupport->getProcAddress("glGenQueriesARB");
|
---|
627 | glDeleteQueriesARB_ptr =
|
---|
628 | (GL_DeleteQueriesARB_Func)mGLSupport->getProcAddress("glDeleteQueriesARB");
|
---|
629 | glBeginQueryARB_ptr =
|
---|
630 | (GL_BeginQueryARB_Func)mGLSupport->getProcAddress("glBeginQueryARB");
|
---|
631 | glEndQueryARB_ptr =
|
---|
632 | (GL_EndQueryARB_Func)mGLSupport->getProcAddress("glEndQueryARB");
|
---|
633 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
|
---|
634 | glGetQueryivARB_ptr =
|
---|
635 | (GL_GetQueryivARB_Func)mGLSupport->getProcAddress("glGetQueryivARB");
|
---|
636 | glGetQueryObjectivARB_ptr =
|
---|
637 | (GL_GetQueryObjectivARB_Func)mGLSupport->getProcAddress("glGetQueryObjectivARB");
|
---|
638 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
|
---|
639 | glGetQueryObjectuivARB_ptr =
|
---|
640 | (GL_GetQueryObjectuivARB_Func)mGLSupport->getProcAddress("glGetQueryObjectuivARB");
|
---|
641 |
|
---|
642 | mCapabilities->log(LogManager::getSingleton().getDefaultLog());
|
---|
643 | mGLInitialized = true;
|
---|
644 | }
|
---|
645 |
|
---|
646 | void GLRenderSystem::reinitialise(void)
|
---|
647 | {
|
---|
648 | this->shutdown();
|
---|
649 | this->initialise(true);
|
---|
650 | }
|
---|
651 |
|
---|
652 | void GLRenderSystem::shutdown(void)
|
---|
653 | {
|
---|
654 | RenderSystem::shutdown();
|
---|
655 |
|
---|
656 | // Deleting the GPU program manager and hardware buffer manager. Has to be done before the mGLSupport->stop().
|
---|
657 | if (mGpuProgramManager)
|
---|
658 | {
|
---|
659 | delete mGpuProgramManager;
|
---|
660 | mGpuProgramManager = 0;
|
---|
661 | }
|
---|
662 |
|
---|
663 | if (mHardwareBufferManager)
|
---|
664 | {
|
---|
665 | delete mHardwareBufferManager;
|
---|
666 | mHardwareBufferManager = 0;
|
---|
667 | }
|
---|
668 |
|
---|
669 |
|
---|
670 | mGLSupport->stop();
|
---|
671 | mStopRendering = true;
|
---|
672 | }
|
---|
673 |
|
---|
674 | void GLRenderSystem::setAmbientLight(float r, float g, float b)
|
---|
675 | {
|
---|
676 | GLfloat lmodel_ambient[] = {r, g, b, 1.0};
|
---|
677 | glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
|
---|
678 | }
|
---|
679 |
|
---|
680 | void GLRenderSystem::setShadingType(ShadeOptions so)
|
---|
681 | {
|
---|
682 | switch(so)
|
---|
683 | {
|
---|
684 | case SO_FLAT:
|
---|
685 | glShadeModel(GL_FLAT);
|
---|
686 | break;
|
---|
687 | default:
|
---|
688 | glShadeModel(GL_SMOOTH);
|
---|
689 | break;
|
---|
690 | }
|
---|
691 | }
|
---|
692 |
|
---|
693 | RenderWindow* GLRenderSystem::createRenderWindow(const String &name,
|
---|
694 | unsigned int width, unsigned int height, bool fullScreen,
|
---|
695 | const NameValuePairList *miscParams)
|
---|
696 | {
|
---|
697 | if (mRenderTargets.find(name) != mRenderTargets.end())
|
---|
698 | {
|
---|
699 | OGRE_EXCEPT(
|
---|
700 | Exception::ERR_INVALIDPARAMS,
|
---|
701 | "Window with name '" + name + "' already exists",
|
---|
702 | "GLRenderSystem::createRenderWindow" );
|
---|
703 | }
|
---|
704 | // Log a message
|
---|
705 | std::stringstream ss;
|
---|
706 | ss << "GLRenderSystem::createRenderWindow \"" << name << "\", " <<
|
---|
707 | width << "x" << height << " ";
|
---|
708 | if(fullScreen)
|
---|
709 | ss << "fullscreen ";
|
---|
710 | else
|
---|
711 | ss << "windowed ";
|
---|
712 | if(miscParams)
|
---|
713 | {
|
---|
714 | ss << " miscParams: ";
|
---|
715 | NameValuePairList::const_iterator it;
|
---|
716 | for(it=miscParams->begin(); it!=miscParams->end(); ++it)
|
---|
717 | {
|
---|
718 | ss << it->first << "=" << it->second << " ";
|
---|
719 | }
|
---|
720 | LogManager::getSingleton().logMessage(ss.str());
|
---|
721 | }
|
---|
722 |
|
---|
723 | // Create the window
|
---|
724 | RenderWindow* win = mGLSupport->newWindow(name, width, height,
|
---|
725 | fullScreen, miscParams);
|
---|
726 |
|
---|
727 | attachRenderTarget( *win );
|
---|
728 |
|
---|
729 | if (!mGLInitialized)
|
---|
730 | {
|
---|
731 | // Initialise GL after the first window has been created
|
---|
732 | initGL();
|
---|
733 | mTextureManager = new GLTextureManager(*mGLSupport);
|
---|
734 | // Set main and current context
|
---|
735 | ContextMap::iterator i = mContextMap.find(win);
|
---|
736 | if(i != mContextMap.end()) {
|
---|
737 | mCurrentContext = i->second;
|
---|
738 | mMainContext = i->second;
|
---|
739 | mCurrentContext->setCurrent();
|
---|
740 | }
|
---|
741 | // Initialise the main context
|
---|
742 | _oneTimeContextInitialization();
|
---|
743 | }
|
---|
744 |
|
---|
745 |
|
---|
746 | // XXX Do more?
|
---|
747 |
|
---|
748 | return win;
|
---|
749 | }
|
---|
750 |
|
---|
751 | RenderTexture * GLRenderSystem::createRenderTexture( const String & name, unsigned int width, unsigned int height,
|
---|
752 | TextureType texType, PixelFormat internalFormat, const NameValuePairList *miscParams )
|
---|
753 | {
|
---|
754 | // Log a message
|
---|
755 | std::stringstream ss;
|
---|
756 | ss << "GLRenderSystem::createRenderTexture \"" << name << "\", " <<
|
---|
757 | width << "x" << height << " texType=" << texType <<
|
---|
758 | " internalFormat=" << PixelUtil::getFormatName(internalFormat) << " ";
|
---|
759 | if(miscParams)
|
---|
760 | {
|
---|
761 | ss << "miscParams: ";
|
---|
762 | NameValuePairList::const_iterator it;
|
---|
763 | for(it=miscParams->begin(); it!=miscParams->end(); ++it)
|
---|
764 | {
|
---|
765 | ss << it->first << "=" << it->second << " ";
|
---|
766 | }
|
---|
767 | LogManager::getSingleton().logMessage(ss.str());
|
---|
768 | }
|
---|
769 | // Pass on the create call
|
---|
770 | RenderTexture *rt = mGLSupport->createRenderTexture(name, width, height, texType, internalFormat, miscParams);
|
---|
771 | attachRenderTarget( *rt );
|
---|
772 | return rt;
|
---|
773 | }
|
---|
774 |
|
---|
775 | //-----------------------------------------------------------------------
|
---|
776 | void GLRenderSystem::destroyRenderWindow(RenderWindow* pWin)
|
---|
777 | {
|
---|
778 | // Find it to remove from list
|
---|
779 | RenderTargetMap::iterator i = mRenderTargets.begin();
|
---|
780 |
|
---|
781 | while (i != mRenderTargets.end())
|
---|
782 | {
|
---|
783 | if (i->second == pWin)
|
---|
784 | {
|
---|
785 | mRenderTargets.erase(i);
|
---|
786 | delete pWin;
|
---|
787 | break;
|
---|
788 | }
|
---|
789 | }
|
---|
790 | }
|
---|
791 |
|
---|
792 | //---------------------------------------------------------------------
|
---|
793 | void GLRenderSystem::_useLights(const LightList& lights, unsigned short limit)
|
---|
794 | {
|
---|
795 | // Save previous modelview
|
---|
796 | glMatrixMode(GL_MODELVIEW);
|
---|
797 | glPushMatrix();
|
---|
798 | // just load view matrix (identity world)
|
---|
799 | GLfloat mat[16];
|
---|
800 | makeGLMatrix(mat, mViewMatrix);
|
---|
801 | glLoadMatrixf(mat);
|
---|
802 |
|
---|
803 | LightList::const_iterator i, iend;
|
---|
804 | iend = lights.end();
|
---|
805 | unsigned short num = 0;
|
---|
806 | for (i = lights.begin(); i != iend && num < limit; ++i, ++num)
|
---|
807 | {
|
---|
808 | setGLLight(num, *i);
|
---|
809 | mLights[num] = *i;
|
---|
810 | }
|
---|
811 | // Disable extra lights
|
---|
812 | for (; num < mCurrentLights; ++num)
|
---|
813 | {
|
---|
814 | setGLLight(num, NULL);
|
---|
815 | mLights[num] = NULL;
|
---|
816 | }
|
---|
817 | mCurrentLights = std::min(limit, static_cast<unsigned short>(lights.size()));
|
---|
818 |
|
---|
819 | setLights();
|
---|
820 |
|
---|
821 | // restore previous
|
---|
822 | glPopMatrix();
|
---|
823 |
|
---|
824 | }
|
---|
825 |
|
---|
826 | void GLRenderSystem::setGLLight(size_t index, Light* lt)
|
---|
827 | {
|
---|
828 | GLenum gl_index = GL_LIGHT0 + index;
|
---|
829 |
|
---|
830 | if (!lt)
|
---|
831 | {
|
---|
832 | // Disable in the scene
|
---|
833 | glDisable(gl_index);
|
---|
834 | }
|
---|
835 | else
|
---|
836 | {
|
---|
837 | switch (lt->getType())
|
---|
838 | {
|
---|
839 | case Light::LT_SPOTLIGHT:
|
---|
840 | glLightf( gl_index, GL_SPOT_CUTOFF, 0.5f * lt->getSpotlightOuterAngle().valueDegrees() );
|
---|
841 | break;
|
---|
842 | default:
|
---|
843 | glLightf( gl_index, GL_SPOT_CUTOFF, 180.0 );
|
---|
844 | break;
|
---|
845 | }
|
---|
846 |
|
---|
847 | // Color
|
---|
848 | ColourValue col;
|
---|
849 | col = lt->getDiffuseColour();
|
---|
850 |
|
---|
851 |
|
---|
852 | GLfloat f4vals[4] = {col.r, col.g, col.b, col.a};
|
---|
853 | glLightfv(gl_index, GL_DIFFUSE, f4vals);
|
---|
854 |
|
---|
855 | col = lt->getSpecularColour();
|
---|
856 | f4vals[0] = col.r;
|
---|
857 | f4vals[1] = col.g;
|
---|
858 | f4vals[2] = col.b;
|
---|
859 | f4vals[3] = col.a;
|
---|
860 | glLightfv(gl_index, GL_SPECULAR, f4vals);
|
---|
861 |
|
---|
862 |
|
---|
863 | // Disable ambient light for movables;
|
---|
864 | f4vals[0] = 0;
|
---|
865 | f4vals[1] = 0;
|
---|
866 | f4vals[2] = 0;
|
---|
867 | f4vals[3] = 1;
|
---|
868 | glLightfv(gl_index, GL_AMBIENT, f4vals);
|
---|
869 |
|
---|
870 | setGLLightPositionDirection(lt, gl_index);
|
---|
871 |
|
---|
872 |
|
---|
873 | // Attenuation
|
---|
874 | glLightf(gl_index, GL_CONSTANT_ATTENUATION, lt->getAttenuationConstant());
|
---|
875 | glLightf(gl_index, GL_LINEAR_ATTENUATION, lt->getAttenuationLinear());
|
---|
876 | glLightf(gl_index, GL_QUADRATIC_ATTENUATION, lt->getAttenuationQuadric());
|
---|
877 | // Enable in the scene
|
---|
878 | glEnable(gl_index);
|
---|
879 |
|
---|
880 | }
|
---|
881 |
|
---|
882 | }
|
---|
883 |
|
---|
884 | //-----------------------------------------------------------------------------
|
---|
885 | void GLRenderSystem::makeGLMatrix(GLfloat gl_matrix[16], const Matrix4& m)
|
---|
886 | {
|
---|
887 | size_t x = 0;
|
---|
888 | for (size_t i = 0; i < 4; i++)
|
---|
889 | {
|
---|
890 | for (size_t j = 0; j < 4; j++)
|
---|
891 | {
|
---|
892 | gl_matrix[x] = m[j][i];
|
---|
893 | x++;
|
---|
894 | }
|
---|
895 | }
|
---|
896 | }
|
---|
897 | //-----------------------------------------------------------------------------
|
---|
898 | void GLRenderSystem::_setWorldMatrix( const Matrix4 &m )
|
---|
899 | {
|
---|
900 | GLfloat mat[16];
|
---|
901 | mWorldMatrix = m;
|
---|
902 | makeGLMatrix( mat, mViewMatrix * mWorldMatrix );
|
---|
903 | glMatrixMode(GL_MODELVIEW);
|
---|
904 | glLoadMatrixf(mat);
|
---|
905 | }
|
---|
906 |
|
---|
907 | //-----------------------------------------------------------------------------
|
---|
908 | void GLRenderSystem::_setViewMatrix( const Matrix4 &m )
|
---|
909 | {
|
---|
910 | mViewMatrix = m;
|
---|
911 |
|
---|
912 | GLfloat mat[16];
|
---|
913 | makeGLMatrix(mat, mViewMatrix);
|
---|
914 | glMatrixMode(GL_MODELVIEW);
|
---|
915 | glLoadMatrixf(mat);
|
---|
916 |
|
---|
917 | makeGLMatrix(mat, mWorldMatrix);
|
---|
918 | glMultMatrixf(mat);
|
---|
919 |
|
---|
920 | setGLClipPlanes();
|
---|
921 | }
|
---|
922 | //-----------------------------------------------------------------------------
|
---|
923 | void GLRenderSystem::_setProjectionMatrix(const Matrix4 &m)
|
---|
924 | {
|
---|
925 | GLfloat mat[16];
|
---|
926 | makeGLMatrix(mat, m);
|
---|
927 | if (mActiveRenderTarget->requiresTextureFlipping())
|
---|
928 | {
|
---|
929 | // Invert y
|
---|
930 | mat[5] = -mat[5];
|
---|
931 | }
|
---|
932 | glMatrixMode(GL_PROJECTION);
|
---|
933 | glLoadMatrixf(mat);
|
---|
934 | glMatrixMode(GL_MODELVIEW);
|
---|
935 | }
|
---|
936 | //-----------------------------------------------------------------------------
|
---|
937 | void GLRenderSystem::_setSurfaceParams(const ColourValue &ambient,
|
---|
938 | const ColourValue &diffuse, const ColourValue &specular,
|
---|
939 | const ColourValue &emissive, Real shininess,
|
---|
940 | TrackVertexColourType tracking)
|
---|
941 | {
|
---|
942 | // XXX Cache previous values?
|
---|
943 | // XXX Front or Front and Back?
|
---|
944 |
|
---|
945 | GLfloat f4val[4] = {diffuse.r, diffuse.g, diffuse.b, diffuse.a};
|
---|
946 | glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, f4val);
|
---|
947 | f4val[0] = ambient.r;
|
---|
948 | f4val[1] = ambient.g;
|
---|
949 | f4val[2] = ambient.b;
|
---|
950 | f4val[3] = ambient.a;
|
---|
951 | glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, f4val);
|
---|
952 | f4val[0] = specular.r;
|
---|
953 | f4val[1] = specular.g;
|
---|
954 | f4val[2] = specular.b;
|
---|
955 | f4val[3] = specular.a;
|
---|
956 | glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, f4val);
|
---|
957 | f4val[0] = emissive.r;
|
---|
958 | f4val[1] = emissive.g;
|
---|
959 | f4val[2] = emissive.b;
|
---|
960 | f4val[3] = emissive.a;
|
---|
961 | glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, f4val);
|
---|
962 | glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, shininess);
|
---|
963 |
|
---|
964 | // Track vertex colour
|
---|
965 | if(tracking != TVC_NONE)
|
---|
966 | {
|
---|
967 | GLenum gt = GL_DIFFUSE;
|
---|
968 | // There are actually 15 different combinations for tracking, of which
|
---|
969 | // GL only supports the most used 5. This means that we have to do some
|
---|
970 | // magic to find the best match. NOTE:
|
---|
971 | // GL_AMBIENT_AND_DIFFUSE != GL_AMBIENT | GL__DIFFUSE
|
---|
972 | if(tracking & TVC_AMBIENT)
|
---|
973 | {
|
---|
974 | if(tracking & TVC_DIFFUSE)
|
---|
975 | {
|
---|
976 | gt = GL_AMBIENT_AND_DIFFUSE;
|
---|
977 | }
|
---|
978 | else
|
---|
979 | {
|
---|
980 | gt = GL_AMBIENT;
|
---|
981 | }
|
---|
982 | }
|
---|
983 | else if(tracking & TVC_DIFFUSE)
|
---|
984 | {
|
---|
985 | gt = GL_DIFFUSE;
|
---|
986 | }
|
---|
987 | else if(tracking & TVC_SPECULAR)
|
---|
988 | {
|
---|
989 | gt = GL_SPECULAR;
|
---|
990 | }
|
---|
991 | else if(tracking & TVC_EMISSIVE)
|
---|
992 | {
|
---|
993 | gt = GL_EMISSION;
|
---|
994 | }
|
---|
995 | glColorMaterial(GL_FRONT_AND_BACK, gt);
|
---|
996 |
|
---|
997 | glEnable(GL_COLOR_MATERIAL);
|
---|
998 | }
|
---|
999 | else
|
---|
1000 | {
|
---|
1001 | glDisable(GL_COLOR_MATERIAL);
|
---|
1002 | }
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 | //-----------------------------------------------------------------------------
|
---|
1006 | void GLRenderSystem::_setTexture(size_t stage, bool enabled, const String &texname)
|
---|
1007 | {
|
---|
1008 | GLTexturePtr tex = TextureManager::getSingleton().getByName(texname);
|
---|
1009 |
|
---|
1010 | GLenum lastTextureType = mTextureTypes[stage];
|
---|
1011 |
|
---|
1012 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
1013 | if (enabled)
|
---|
1014 | {
|
---|
1015 | if (!tex.isNull())
|
---|
1016 | {
|
---|
1017 | // note used
|
---|
1018 | tex->touch();
|
---|
1019 | mTextureTypes[stage] = tex->getGLTextureTarget();
|
---|
1020 | }
|
---|
1021 | else
|
---|
1022 | // assume 2D
|
---|
1023 | mTextureTypes[stage] = GL_TEXTURE_2D;
|
---|
1024 |
|
---|
1025 | if(lastTextureType != mTextureTypes[stage] && lastTextureType != 0)
|
---|
1026 | {
|
---|
1027 | glDisable( lastTextureType );
|
---|
1028 | }
|
---|
1029 |
|
---|
1030 | glEnable( mTextureTypes[stage] );
|
---|
1031 | if(!tex.isNull())
|
---|
1032 | glBindTexture( mTextureTypes[stage], tex->getGLID() );
|
---|
1033 | }
|
---|
1034 | else
|
---|
1035 | {
|
---|
1036 | if (lastTextureType != 0)
|
---|
1037 | {
|
---|
1038 | glDisable( mTextureTypes[stage] );
|
---|
1039 | }
|
---|
1040 | glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | //-----------------------------------------------------------------------------
|
---|
1047 | void GLRenderSystem::_setTextureCoordSet(size_t stage, size_t index)
|
---|
1048 | {
|
---|
1049 | mTextureCoordIndex[stage] = index;
|
---|
1050 | }
|
---|
1051 | //-----------------------------------------------------------------------------
|
---|
1052 | void GLRenderSystem::_setTextureCoordCalculation(size_t stage, TexCoordCalcMethod m,
|
---|
1053 | const Frustum* frustum)
|
---|
1054 | {
|
---|
1055 | GLfloat M[16];
|
---|
1056 | Matrix4 projectionBias;
|
---|
1057 |
|
---|
1058 | // Default to no extra auto texture matrix
|
---|
1059 | mUseAutoTextureMatrix = false;
|
---|
1060 |
|
---|
1061 | GLfloat eyePlaneS[] = {1.0, 0.0, 0.0, 0.0};
|
---|
1062 | GLfloat eyePlaneT[] = {0.0, 1.0, 0.0, 0.0};
|
---|
1063 | GLfloat eyePlaneR[] = {0.0, 0.0, 1.0, 0.0};
|
---|
1064 | GLfloat eyePlaneQ[] = {0.0, 0.0, 0.0, 1.0};
|
---|
1065 |
|
---|
1066 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
1067 |
|
---|
1068 | switch( m )
|
---|
1069 | {
|
---|
1070 | case TEXCALC_NONE:
|
---|
1071 | glDisable( GL_TEXTURE_GEN_S );
|
---|
1072 | glDisable( GL_TEXTURE_GEN_T );
|
---|
1073 | glDisable( GL_TEXTURE_GEN_R );
|
---|
1074 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1075 | break;
|
---|
1076 |
|
---|
1077 | case TEXCALC_ENVIRONMENT_MAP:
|
---|
1078 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
1079 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
1080 |
|
---|
1081 | glEnable( GL_TEXTURE_GEN_S );
|
---|
1082 | glEnable( GL_TEXTURE_GEN_T );
|
---|
1083 | glDisable( GL_TEXTURE_GEN_R );
|
---|
1084 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1085 |
|
---|
1086 | // Need to use a texture matrix to flip the spheremap
|
---|
1087 | mUseAutoTextureMatrix = true;
|
---|
1088 | memset(mAutoTextureMatrix, 0, sizeof(GLfloat)*16);
|
---|
1089 | mAutoTextureMatrix[0] = mAutoTextureMatrix[10] = mAutoTextureMatrix[15] = 1.0f;
|
---|
1090 | mAutoTextureMatrix[5] = -1.0f;
|
---|
1091 |
|
---|
1092 | break;
|
---|
1093 |
|
---|
1094 | case TEXCALC_ENVIRONMENT_MAP_PLANAR:
|
---|
1095 | // XXX This doesn't seem right?!
|
---|
1096 | #ifdef GL_VERSION_1_3
|
---|
1097 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1098 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1099 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1100 |
|
---|
1101 | glEnable( GL_TEXTURE_GEN_S );
|
---|
1102 | glEnable( GL_TEXTURE_GEN_T );
|
---|
1103 | glEnable( GL_TEXTURE_GEN_R );
|
---|
1104 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1105 | #else
|
---|
1106 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
1107 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP );
|
---|
1108 |
|
---|
1109 | glEnable( GL_TEXTURE_GEN_S );
|
---|
1110 | glEnable( GL_TEXTURE_GEN_T );
|
---|
1111 | glDisable( GL_TEXTURE_GEN_R );
|
---|
1112 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1113 | #endif
|
---|
1114 | break;
|
---|
1115 | case TEXCALC_ENVIRONMENT_MAP_REFLECTION:
|
---|
1116 |
|
---|
1117 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1118 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1119 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_REFLECTION_MAP );
|
---|
1120 |
|
---|
1121 | glEnable( GL_TEXTURE_GEN_S );
|
---|
1122 | glEnable( GL_TEXTURE_GEN_T );
|
---|
1123 | glEnable( GL_TEXTURE_GEN_R );
|
---|
1124 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1125 |
|
---|
1126 | // We need an extra texture matrix here
|
---|
1127 | // This sets the texture matrix to be the inverse of the modelview matrix
|
---|
1128 | mUseAutoTextureMatrix = true;
|
---|
1129 | glGetFloatv( GL_MODELVIEW_MATRIX, M );
|
---|
1130 |
|
---|
1131 | // Transpose 3x3 in order to invert matrix (rotation)
|
---|
1132 | // Note that we need to invert the Z _before_ the rotation
|
---|
1133 | // No idea why we have to invert the Z at all, but reflection is wrong without it
|
---|
1134 | mAutoTextureMatrix[0] = M[0]; mAutoTextureMatrix[1] = M[4]; mAutoTextureMatrix[2] = -M[8];
|
---|
1135 | mAutoTextureMatrix[4] = M[1]; mAutoTextureMatrix[5] = M[5]; mAutoTextureMatrix[6] = -M[9];
|
---|
1136 | mAutoTextureMatrix[8] = M[2]; mAutoTextureMatrix[9] = M[6]; mAutoTextureMatrix[10] = -M[10];
|
---|
1137 | mAutoTextureMatrix[3] = mAutoTextureMatrix[7] = mAutoTextureMatrix[11] = 0.0f;
|
---|
1138 | mAutoTextureMatrix[12] = mAutoTextureMatrix[13] = mAutoTextureMatrix[14] = 0.0f;
|
---|
1139 | mAutoTextureMatrix[15] = 1.0f;
|
---|
1140 |
|
---|
1141 | break;
|
---|
1142 | case TEXCALC_ENVIRONMENT_MAP_NORMAL:
|
---|
1143 | glTexGeni( GL_S, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
1144 | glTexGeni( GL_T, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
1145 | glTexGeni( GL_R, GL_TEXTURE_GEN_MODE, GL_NORMAL_MAP );
|
---|
1146 |
|
---|
1147 | glEnable( GL_TEXTURE_GEN_S );
|
---|
1148 | glEnable( GL_TEXTURE_GEN_T );
|
---|
1149 | glEnable( GL_TEXTURE_GEN_R );
|
---|
1150 | glDisable( GL_TEXTURE_GEN_Q );
|
---|
1151 | break;
|
---|
1152 | case TEXCALC_PROJECTIVE_TEXTURE:
|
---|
1153 | glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
1154 | glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
1155 | glTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
1156 | glTexGeni(GL_Q, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
|
---|
1157 | glTexGenfv(GL_S, GL_EYE_PLANE, eyePlaneS);
|
---|
1158 | glTexGenfv(GL_T, GL_EYE_PLANE, eyePlaneT);
|
---|
1159 | glTexGenfv(GL_R, GL_EYE_PLANE, eyePlaneR);
|
---|
1160 | glTexGenfv(GL_Q, GL_EYE_PLANE, eyePlaneQ);
|
---|
1161 | glEnable(GL_TEXTURE_GEN_S);
|
---|
1162 | glEnable(GL_TEXTURE_GEN_T);
|
---|
1163 | glEnable(GL_TEXTURE_GEN_R);
|
---|
1164 | glEnable(GL_TEXTURE_GEN_Q);
|
---|
1165 |
|
---|
1166 | mUseAutoTextureMatrix = true;
|
---|
1167 |
|
---|
1168 | // Set scale and translation matrix for projective textures
|
---|
1169 | projectionBias = Matrix4::ZERO;
|
---|
1170 | projectionBias[0][0] = 0.5; projectionBias[1][1] = -0.5;
|
---|
1171 | projectionBias[2][2] = 1.0; projectionBias[0][3] = 0.5;
|
---|
1172 | projectionBias[1][3] = 0.5; projectionBias[3][3] = 1.0;
|
---|
1173 |
|
---|
1174 | projectionBias = projectionBias * frustum->getProjectionMatrix();
|
---|
1175 | projectionBias = projectionBias * frustum->getViewMatrix();
|
---|
1176 | projectionBias = projectionBias * mWorldMatrix;
|
---|
1177 |
|
---|
1178 | makeGLMatrix(mAutoTextureMatrix, projectionBias);
|
---|
1179 | break;
|
---|
1180 | default:
|
---|
1181 | break;
|
---|
1182 | }
|
---|
1183 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
1184 | }
|
---|
1185 | //-----------------------------------------------------------------------------
|
---|
1186 | void GLRenderSystem::_setTextureAddressingMode(size_t stage, TextureUnitState::TextureAddressingMode tam)
|
---|
1187 | {
|
---|
1188 | GLint type;
|
---|
1189 | switch(tam)
|
---|
1190 | {
|
---|
1191 | case TextureUnitState::TAM_WRAP:
|
---|
1192 | type = GL_REPEAT;
|
---|
1193 | break;
|
---|
1194 | case TextureUnitState::TAM_MIRROR:
|
---|
1195 | type = GL_MIRRORED_REPEAT;
|
---|
1196 | break;
|
---|
1197 | case TextureUnitState::TAM_CLAMP:
|
---|
1198 | type = GL_CLAMP_TO_EDGE;
|
---|
1199 | break;
|
---|
1200 | }
|
---|
1201 |
|
---|
1202 | glActiveTextureARB_ptr( GL_TEXTURE0 + stage );
|
---|
1203 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_S, type );
|
---|
1204 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_T, type );
|
---|
1205 | glTexParameteri( mTextureTypes[stage], GL_TEXTURE_WRAP_R, type );
|
---|
1206 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
1207 | }
|
---|
1208 | //-----------------------------------------------------------------------------
|
---|
1209 | void GLRenderSystem::_setTextureMatrix(size_t stage, const Matrix4& xform)
|
---|
1210 | {
|
---|
1211 | GLfloat mat[16];
|
---|
1212 | makeGLMatrix(mat, xform);
|
---|
1213 |
|
---|
1214 | if(mTextureTypes[stage] != GL_TEXTURE_3D &&
|
---|
1215 | mTextureTypes[stage] != GL_TEXTURE_CUBE_MAP)
|
---|
1216 | {
|
---|
1217 | // Convert 3x3 rotation/translation matrix to 4x4
|
---|
1218 | mat[12] = mat[8];
|
---|
1219 | mat[13] = mat[9];
|
---|
1220 | }
|
---|
1221 | // mat[14] = mat[10];
|
---|
1222 | // mat[15] = mat[11];
|
---|
1223 |
|
---|
1224 | // for (int j=0; j< 4; j++)
|
---|
1225 | // {
|
---|
1226 | // int x = 0;
|
---|
1227 | // for (x = 0; x < 4; x++)
|
---|
1228 | // {
|
---|
1229 | // printf("[%2d]=%0.2f\t", (x*4) + j, mat[(x*4) + j]);
|
---|
1230 | // }
|
---|
1231 | // printf("\n");
|
---|
1232 | // }
|
---|
1233 |
|
---|
1234 | glActiveTextureARB_ptr(GL_TEXTURE0 + stage);
|
---|
1235 | glMatrixMode(GL_TEXTURE);
|
---|
1236 |
|
---|
1237 | if (mUseAutoTextureMatrix)
|
---|
1238 | {
|
---|
1239 | // Load auto matrix in
|
---|
1240 | glLoadMatrixf(mAutoTextureMatrix);
|
---|
1241 | // Concat new matrix
|
---|
1242 | glMultMatrixf(mat);
|
---|
1243 |
|
---|
1244 | }
|
---|
1245 | else
|
---|
1246 | {
|
---|
1247 | // Just load this matrix
|
---|
1248 | glLoadMatrixf(mat);
|
---|
1249 | }
|
---|
1250 |
|
---|
1251 | glMatrixMode(GL_MODELVIEW);
|
---|
1252 | glActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
1253 | }
|
---|
1254 | //-----------------------------------------------------------------------------
|
---|
1255 | GLint GLRenderSystem::getBlendMode(SceneBlendFactor ogreBlend) const
|
---|
1256 | {
|
---|
1257 | switch(ogreBlend)
|
---|
1258 | {
|
---|
1259 | case SBF_ONE:
|
---|
1260 | return GL_ONE;
|
---|
1261 | case SBF_ZERO:
|
---|
1262 | return GL_ZERO;
|
---|
1263 | case SBF_DEST_COLOUR:
|
---|
1264 | return GL_DST_COLOR;
|
---|
1265 | case SBF_SOURCE_COLOUR:
|
---|
1266 | return GL_SRC_COLOR;
|
---|
1267 | case SBF_ONE_MINUS_DEST_COLOUR:
|
---|
1268 | return GL_ONE_MINUS_DST_COLOR;
|
---|
1269 | case SBF_ONE_MINUS_SOURCE_COLOUR:
|
---|
1270 | return GL_ONE_MINUS_SRC_COLOR;
|
---|
1271 | case SBF_DEST_ALPHA:
|
---|
1272 | return GL_DST_ALPHA;
|
---|
1273 | case SBF_SOURCE_ALPHA:
|
---|
1274 | return GL_SRC_ALPHA;
|
---|
1275 | case SBF_ONE_MINUS_DEST_ALPHA:
|
---|
1276 | return GL_ONE_MINUS_DST_ALPHA;
|
---|
1277 | case SBF_ONE_MINUS_SOURCE_ALPHA:
|
---|
1278 | return GL_ONE_MINUS_SRC_ALPHA;
|
---|
1279 | };
|
---|
1280 | // to keep compiler happy
|
---|
1281 | return GL_ONE;
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 | void GLRenderSystem::_setSceneBlending(SceneBlendFactor sourceFactor, SceneBlendFactor destFactor)
|
---|
1285 | {
|
---|
1286 | GLint sourceBlend = getBlendMode(sourceFactor);
|
---|
1287 | GLint destBlend = getBlendMode(destFactor);
|
---|
1288 |
|
---|
1289 | glEnable(GL_BLEND);
|
---|
1290 | glBlendFunc(sourceBlend, destBlend);
|
---|
1291 | }
|
---|
1292 | //-----------------------------------------------------------------------------
|
---|
1293 | void GLRenderSystem::_setAlphaRejectSettings(CompareFunction func, unsigned char value)
|
---|
1294 | {
|
---|
1295 | glEnable(GL_ALPHA_TEST);
|
---|
1296 | glAlphaFunc(convertCompareFunction(func), value / 255.0f);
|
---|
1297 | }
|
---|
1298 | //-----------------------------------------------------------------------------
|
---|
1299 | void GLRenderSystem::_setViewport(Viewport *vp)
|
---|
1300 | {
|
---|
1301 | // Check if viewport is different
|
---|
1302 | if (vp != mActiveViewport || vp->_isUpdated())
|
---|
1303 | {
|
---|
1304 | RenderTarget* target;
|
---|
1305 | target = vp->getTarget();
|
---|
1306 | _setRenderTarget(target);
|
---|
1307 | mActiveViewport = vp;
|
---|
1308 |
|
---|
1309 | GLsizei x, y, w, h;
|
---|
1310 |
|
---|
1311 | // Calculate the "lower-left" corner of the viewport
|
---|
1312 | w = vp->getActualWidth();
|
---|
1313 | h = vp->getActualHeight();
|
---|
1314 | x = vp->getActualLeft();
|
---|
1315 | y = target->getHeight() - vp->getActualTop() - h;
|
---|
1316 |
|
---|
1317 | glViewport(x, y, w, h);
|
---|
1318 |
|
---|
1319 | // Configure the viewport clipping
|
---|
1320 | glScissor(x, y, w, h);
|
---|
1321 |
|
---|
1322 | vp->_clearUpdatedFlag();
|
---|
1323 | }
|
---|
1324 | }
|
---|
1325 |
|
---|
1326 | void GLRenderSystem::setLights()
|
---|
1327 | {
|
---|
1328 | for (size_t i = 0; i < MAX_LIGHTS; ++i)
|
---|
1329 | {
|
---|
1330 | if (mLights[i] != NULL)
|
---|
1331 | {
|
---|
1332 | Light* lt = mLights[i];
|
---|
1333 | setGLLightPositionDirection(lt, GL_LIGHT0 + i);
|
---|
1334 | }
|
---|
1335 | }
|
---|
1336 | }
|
---|
1337 |
|
---|
1338 | //-----------------------------------------------------------------------------
|
---|
1339 | void GLRenderSystem::_beginFrame(void)
|
---|
1340 | {
|
---|
1341 | OgreGuard( "GLRenderSystem::_beginFrame" );
|
---|
1342 |
|
---|
1343 | if (!mActiveViewport)
|
---|
1344 | OGRE_EXCEPT(999, "Cannot begin frame - no viewport selected.",
|
---|
1345 | "GLRenderSystem::_beginFrame");
|
---|
1346 |
|
---|
1347 | // Clear the viewport if required
|
---|
1348 | if (mActiveViewport->getClearEveryFrame())
|
---|
1349 | {
|
---|
1350 | // Activate the viewport clipping
|
---|
1351 | glEnable(GL_SCISSOR_TEST);
|
---|
1352 |
|
---|
1353 | clearFrameBuffer(FBT_COLOUR | FBT_DEPTH,
|
---|
1354 | mActiveViewport->getBackgroundColour());
|
---|
1355 | }
|
---|
1356 |
|
---|
1357 | OgreUnguard();
|
---|
1358 | }
|
---|
1359 |
|
---|
1360 | //-----------------------------------------------------------------------------
|
---|
1361 | void GLRenderSystem::_endFrame(void)
|
---|
1362 | {
|
---|
1363 | // Deactivate the viewport clipping.
|
---|
1364 | glDisable(GL_SCISSOR_TEST);
|
---|
1365 | }
|
---|
1366 |
|
---|
1367 | //-----------------------------------------------------------------------------
|
---|
1368 | void GLRenderSystem::_setCullingMode(CullingMode mode)
|
---|
1369 | {
|
---|
1370 | // NB: Because two-sided stencil API dependence of the front face, we must
|
---|
1371 | // use the same 'winding' for the front face everywhere. As the OGRE default
|
---|
1372 | // culling mode is clockwise, we also treat anticlockwise winding as front
|
---|
1373 | // face for consistently. On the assumption that, we can't change the front
|
---|
1374 | // face by glFrontFace anywhere.
|
---|
1375 |
|
---|
1376 | GLenum cullMode;
|
---|
1377 |
|
---|
1378 | switch( mode )
|
---|
1379 | {
|
---|
1380 | case CULL_NONE:
|
---|
1381 | glDisable( GL_CULL_FACE );
|
---|
1382 | return;
|
---|
1383 | case CULL_CLOCKWISE:
|
---|
1384 | if (mActiveRenderTarget &&
|
---|
1385 | ((mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) ||
|
---|
1386 | (!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding)))
|
---|
1387 | {
|
---|
1388 | cullMode = GL_FRONT;
|
---|
1389 | }
|
---|
1390 | else
|
---|
1391 | {
|
---|
1392 | cullMode = GL_BACK;
|
---|
1393 | }
|
---|
1394 | break;
|
---|
1395 | case CULL_ANTICLOCKWISE:
|
---|
1396 | if (mActiveRenderTarget &&
|
---|
1397 | ((mActiveRenderTarget->requiresTextureFlipping() && !mInvertVertexWinding) ||
|
---|
1398 | (!mActiveRenderTarget->requiresTextureFlipping() && mInvertVertexWinding)))
|
---|
1399 | {
|
---|
1400 | cullMode = GL_BACK;
|
---|
1401 | }
|
---|
1402 | else
|
---|
1403 | {
|
---|
1404 | cullMode = GL_FRONT;
|
---|
1405 | }
|
---|
1406 | break;
|
---|
1407 | }
|
---|
1408 |
|
---|
1409 | glEnable( GL_CULL_FACE );
|
---|
1410 | glCullFace( cullMode );
|
---|
1411 | }
|
---|
1412 | //-----------------------------------------------------------------------------
|
---|
1413 | void GLRenderSystem::_setDepthBufferParams(bool depthTest, bool depthWrite, CompareFunction depthFunction)
|
---|
1414 | {
|
---|
1415 | _setDepthBufferCheckEnabled(depthTest);
|
---|
1416 | _setDepthBufferWriteEnabled(depthWrite);
|
---|
1417 | _setDepthBufferFunction(depthFunction);
|
---|
1418 | }
|
---|
1419 | //-----------------------------------------------------------------------------
|
---|
1420 | void GLRenderSystem::_setDepthBufferCheckEnabled(bool enabled)
|
---|
1421 | {
|
---|
1422 | if (enabled)
|
---|
1423 | {
|
---|
1424 | glClearDepth(1.0f);
|
---|
1425 | glEnable(GL_DEPTH_TEST);
|
---|
1426 | }
|
---|
1427 | else
|
---|
1428 | {
|
---|
1429 | glDisable(GL_DEPTH_TEST);
|
---|
1430 | }
|
---|
1431 | }
|
---|
1432 | //-----------------------------------------------------------------------------
|
---|
1433 | void GLRenderSystem::_setDepthBufferWriteEnabled(bool enabled)
|
---|
1434 | {
|
---|
1435 | GLboolean flag = enabled ? GL_TRUE : GL_FALSE;
|
---|
1436 | glDepthMask( flag );
|
---|
1437 | // Store for reference in _beginFrame
|
---|
1438 | mDepthWrite = enabled;
|
---|
1439 | }
|
---|
1440 | //-----------------------------------------------------------------------------
|
---|
1441 | void GLRenderSystem::_setDepthBufferFunction(CompareFunction func)
|
---|
1442 | {
|
---|
1443 | glDepthFunc(convertCompareFunction(func));
|
---|
1444 | }
|
---|
1445 | //-----------------------------------------------------------------------------
|
---|
1446 | void GLRenderSystem::_setDepthBias(ushort bias)
|
---|
1447 | {
|
---|
1448 | if (bias > 0)
|
---|
1449 | {
|
---|
1450 | glEnable(GL_POLYGON_OFFSET_FILL);
|
---|
1451 | glEnable(GL_POLYGON_OFFSET_POINT);
|
---|
1452 | glEnable(GL_POLYGON_OFFSET_LINE);
|
---|
1453 | // Bias is in {0, 16}, scale the unit addition appropriately
|
---|
1454 | glPolygonOffset(0.0f, -bias);
|
---|
1455 | }
|
---|
1456 | else
|
---|
1457 | {
|
---|
1458 | glDisable(GL_POLYGON_OFFSET_FILL);
|
---|
1459 | glDisable(GL_POLYGON_OFFSET_POINT);
|
---|
1460 | glDisable(GL_POLYGON_OFFSET_LINE);
|
---|
1461 | }
|
---|
1462 | }
|
---|
1463 | //-----------------------------------------------------------------------------
|
---|
1464 | void GLRenderSystem::_setColourBufferWriteEnabled(bool red, bool green, bool blue, bool alpha)
|
---|
1465 | {
|
---|
1466 | glColorMask(red, green, blue, alpha);
|
---|
1467 | // record this
|
---|
1468 | mColourWrite[0] = red;
|
---|
1469 | mColourWrite[1] = blue;
|
---|
1470 | mColourWrite[2] = green;
|
---|
1471 | mColourWrite[3] = alpha;
|
---|
1472 | }
|
---|
1473 | //-----------------------------------------------------------------------------
|
---|
1474 | String GLRenderSystem::getErrorDescription(long errCode) const
|
---|
1475 | {
|
---|
1476 | const GLubyte *errString = gluErrorString (errCode);
|
---|
1477 | return String((const char*) errString);
|
---|
1478 | }
|
---|
1479 | //-----------------------------------------------------------------------------
|
---|
1480 | void GLRenderSystem::setLightingEnabled(bool enabled)
|
---|
1481 | {
|
---|
1482 | if (enabled)
|
---|
1483 | {
|
---|
1484 | glEnable(GL_LIGHTING);
|
---|
1485 | }
|
---|
1486 | else
|
---|
1487 | {
|
---|
1488 | glDisable(GL_LIGHTING);
|
---|
1489 | }
|
---|
1490 | }
|
---|
1491 | //-----------------------------------------------------------------------------
|
---|
1492 | void GLRenderSystem::_setFog(FogMode mode, const ColourValue& colour, Real density, Real start, Real end)
|
---|
1493 | {
|
---|
1494 |
|
---|
1495 | GLint fogMode;
|
---|
1496 | switch (mode)
|
---|
1497 | {
|
---|
1498 | case FOG_EXP:
|
---|
1499 | fogMode = GL_EXP;
|
---|
1500 | break;
|
---|
1501 | case FOG_EXP2:
|
---|
1502 | fogMode = GL_EXP2;
|
---|
1503 | break;
|
---|
1504 | case FOG_LINEAR:
|
---|
1505 | fogMode = GL_LINEAR;
|
---|
1506 | break;
|
---|
1507 | default:
|
---|
1508 | // Give up on it
|
---|
1509 | glDisable(GL_FOG);
|
---|
1510 | return;
|
---|
1511 | }
|
---|
1512 |
|
---|
1513 | glEnable(GL_FOG);
|
---|
1514 | glFogi(GL_FOG_MODE, fogMode);
|
---|
1515 | GLfloat fogColor[4] = {colour.r, colour.g, colour.b, colour.a};
|
---|
1516 | glFogfv(GL_FOG_COLOR, fogColor);
|
---|
1517 | glFogf(GL_FOG_DENSITY, density);
|
---|
1518 | glFogf(GL_FOG_START, start);
|
---|
1519 | glFogf(GL_FOG_END, end);
|
---|
1520 | // XXX Hint here?
|
---|
1521 | }
|
---|
1522 |
|
---|
1523 | void GLRenderSystem::convertColourValue(const ColourValue& colour, uint32* pDest)
|
---|
1524 | {
|
---|
1525 | #if OGRE_ENDIAN == OGRE_ENDIAN_BIG
|
---|
1526 | *pDest = colour.getAsRGBA();
|
---|
1527 | #else
|
---|
1528 | // GL accesses by byte, so use ABGR so little-endian format will make it RGBA in byte mode
|
---|
1529 | *pDest = colour.getAsABGR();
|
---|
1530 | #endif
|
---|
1531 | }
|
---|
1532 |
|
---|
1533 | void GLRenderSystem::_makeProjectionMatrix(const Radian& fovy, Real aspect, Real nearPlane,
|
---|
1534 | Real farPlane, Matrix4& dest, bool forGpuProgram)
|
---|
1535 | {
|
---|
1536 | Radian thetaY ( fovy / 2.0f );
|
---|
1537 | Real tanThetaY = Math::Tan(thetaY);
|
---|
1538 | //Real thetaX = thetaY * aspect;
|
---|
1539 | //Real tanThetaX = Math::Tan(thetaX);
|
---|
1540 |
|
---|
1541 | // Calc matrix elements
|
---|
1542 | Real w = (1.0f / tanThetaY) / aspect;
|
---|
1543 | Real h = 1.0f / tanThetaY;
|
---|
1544 | Real q, qn;
|
---|
1545 | if (farPlane == 0)
|
---|
1546 | {
|
---|
1547 | // Infinite far plane
|
---|
1548 | q = Frustum::INFINITE_FAR_PLANE_ADJUST - 1;
|
---|
1549 | qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 2);
|
---|
1550 | }
|
---|
1551 | else
|
---|
1552 | {
|
---|
1553 | q = -(farPlane + nearPlane) / (farPlane - nearPlane);
|
---|
1554 | qn = -2 * (farPlane * nearPlane) / (farPlane - nearPlane);
|
---|
1555 | }
|
---|
1556 |
|
---|
1557 | // NB This creates Z in range [-1,1]
|
---|
1558 | //
|
---|
1559 | // [ w 0 0 0 ]
|
---|
1560 | // [ 0 h 0 0 ]
|
---|
1561 | // [ 0 0 q qn ]
|
---|
1562 | // [ 0 0 -1 0 ]
|
---|
1563 |
|
---|
1564 | dest = Matrix4::ZERO;
|
---|
1565 | dest[0][0] = w;
|
---|
1566 | dest[1][1] = h;
|
---|
1567 | dest[2][2] = q;
|
---|
1568 | dest[2][3] = qn;
|
---|
1569 | dest[3][2] = -1;
|
---|
1570 |
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 | void GLRenderSystem::_makeOrthoMatrix(const Radian& fovy, Real aspect, Real nearPlane,
|
---|
1574 | Real farPlane, Matrix4& dest, bool forGpuProgram)
|
---|
1575 | {
|
---|
1576 | Radian thetaY (fovy / 2.0f);
|
---|
1577 | Real tanThetaY = Math::Tan(thetaY);
|
---|
1578 |
|
---|
1579 | //Real thetaX = thetaY * aspect;
|
---|
1580 | Real tanThetaX = tanThetaY * aspect; //Math::Tan(thetaX);
|
---|
1581 | Real half_w = tanThetaX * nearPlane;
|
---|
1582 | Real half_h = tanThetaY * nearPlane;
|
---|
1583 | Real iw = 1.0 / half_w;
|
---|
1584 | Real ih = 1.0 / half_h;
|
---|
1585 | Real q;
|
---|
1586 | if (farPlane == 0)
|
---|
1587 | {
|
---|
1588 | q = 0;
|
---|
1589 | }
|
---|
1590 | else
|
---|
1591 | {
|
---|
1592 | q = 2.0 / (farPlane - nearPlane);
|
---|
1593 | }
|
---|
1594 | dest = Matrix4::ZERO;
|
---|
1595 | dest[0][0] = iw;
|
---|
1596 | dest[1][1] = ih;
|
---|
1597 | dest[2][2] = -q;
|
---|
1598 | dest[2][3] = - (farPlane + nearPlane)/(farPlane - nearPlane);
|
---|
1599 | dest[3][3] = 1;
|
---|
1600 | }
|
---|
1601 |
|
---|
1602 | void GLRenderSystem::_setRasterisationMode(SceneDetailLevel level)
|
---|
1603 | {
|
---|
1604 | GLenum glmode;
|
---|
1605 | switch(level)
|
---|
1606 | {
|
---|
1607 | case SDL_POINTS:
|
---|
1608 | glmode = GL_POINT;
|
---|
1609 | break;
|
---|
1610 | case SDL_WIREFRAME:
|
---|
1611 | glmode = GL_LINE;
|
---|
1612 | break;
|
---|
1613 | case SDL_SOLID:
|
---|
1614 | glmode = GL_FILL;
|
---|
1615 | break;
|
---|
1616 | }
|
---|
1617 | glPolygonMode(GL_FRONT_AND_BACK, glmode);
|
---|
1618 | }
|
---|
1619 | //---------------------------------------------------------------------
|
---|
1620 | void GLRenderSystem::setStencilCheckEnabled(bool enabled)
|
---|
1621 | {
|
---|
1622 | if (enabled)
|
---|
1623 | {
|
---|
1624 | glEnable(GL_STENCIL_TEST);
|
---|
1625 | }
|
---|
1626 | else
|
---|
1627 | {
|
---|
1628 | glDisable(GL_STENCIL_TEST);
|
---|
1629 | }
|
---|
1630 | }
|
---|
1631 | //---------------------------------------------------------------------
|
---|
1632 | void GLRenderSystem::setStencilBufferParams(CompareFunction func,
|
---|
1633 | uint32 refValue, uint32 mask, StencilOperation stencilFailOp,
|
---|
1634 | StencilOperation depthFailOp, StencilOperation passOp,
|
---|
1635 | bool twoSidedOperation)
|
---|
1636 | {
|
---|
1637 | bool flip;
|
---|
1638 |
|
---|
1639 | if (twoSidedOperation)
|
---|
1640 | {
|
---|
1641 | if (!mCapabilities->hasCapability(RSC_TWO_SIDED_STENCIL))
|
---|
1642 | OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "2-sided stencils are not supported",
|
---|
1643 | "GLRenderSystem::setStencilBufferParams");
|
---|
1644 | glEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);
|
---|
1645 | // NB: We should always treat CCW as front face for consistent with default
|
---|
1646 | // culling mode. Therefore, we must take care with two-sided stencil settings.
|
---|
1647 | flip = (mInvertVertexWinding && !mActiveRenderTarget->requiresTextureFlipping()) ||
|
---|
1648 | (!mInvertVertexWinding && mActiveRenderTarget->requiresTextureFlipping());
|
---|
1649 |
|
---|
1650 | // Set alternative versions of ops
|
---|
1651 | glActiveStencilFaceEXT_ptr(GL_BACK);
|
---|
1652 | glStencilMask(mask);
|
---|
1653 | glStencilFunc(convertCompareFunction(func), refValue, mask);
|
---|
1654 | glStencilOp(
|
---|
1655 | convertStencilOp(stencilFailOp, !flip),
|
---|
1656 | convertStencilOp(depthFailOp, !flip),
|
---|
1657 | convertStencilOp(passOp, !flip));
|
---|
1658 | // reset
|
---|
1659 | glActiveStencilFaceEXT_ptr(GL_FRONT);
|
---|
1660 | }
|
---|
1661 | else
|
---|
1662 | {
|
---|
1663 | glDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);
|
---|
1664 | flip = false;
|
---|
1665 | }
|
---|
1666 |
|
---|
1667 | glStencilMask(mask);
|
---|
1668 | glStencilFunc(convertCompareFunction(func), refValue, mask);
|
---|
1669 | glStencilOp(
|
---|
1670 | convertStencilOp(stencilFailOp, flip),
|
---|
1671 | convertStencilOp(depthFailOp, flip),
|
---|
1672 | convertStencilOp(passOp, flip));
|
---|
1673 | }
|
---|
1674 | //---------------------------------------------------------------------
|
---|
1675 | GLint GLRenderSystem::convertCompareFunction(CompareFunction func) const
|
---|
1676 | {
|
---|
1677 | switch(func)
|
---|
1678 | {
|
---|
1679 | case CMPF_ALWAYS_FAIL:
|
---|
1680 | return GL_NEVER;
|
---|
1681 | case CMPF_ALWAYS_PASS:
|
---|
1682 | return GL_ALWAYS;
|
---|
1683 | case CMPF_LESS:
|
---|
1684 | return GL_LESS;
|
---|
1685 | case CMPF_LESS_EQUAL:
|
---|
1686 | return GL_LEQUAL;
|
---|
1687 | case CMPF_EQUAL:
|
---|
1688 | return GL_EQUAL;
|
---|
1689 | case CMPF_NOT_EQUAL:
|
---|
1690 | return GL_NOTEQUAL;
|
---|
1691 | case CMPF_GREATER_EQUAL:
|
---|
1692 | return GL_GEQUAL;
|
---|
1693 | case CMPF_GREATER:
|
---|
1694 | return GL_GREATER;
|
---|
1695 | };
|
---|
1696 | // to keep compiler happy
|
---|
1697 | return GL_ALWAYS;
|
---|
1698 | }
|
---|
1699 | //---------------------------------------------------------------------
|
---|
1700 | GLint GLRenderSystem::convertStencilOp(StencilOperation op, bool invert) const
|
---|
1701 | {
|
---|
1702 | switch(op)
|
---|
1703 | {
|
---|
1704 | case SOP_KEEP:
|
---|
1705 | return GL_KEEP;
|
---|
1706 | case SOP_ZERO:
|
---|
1707 | return GL_ZERO;
|
---|
1708 | case SOP_REPLACE:
|
---|
1709 | return GL_REPLACE;
|
---|
1710 | case SOP_INCREMENT:
|
---|
1711 | return invert ? GL_DECR : GL_INCR;
|
---|
1712 | case SOP_DECREMENT:
|
---|
1713 | return invert ? GL_INCR : GL_DECR;
|
---|
1714 | case SOP_INCREMENT_WRAP:
|
---|
1715 | return invert ? GL_DECR_WRAP_EXT : GL_INCR_WRAP_EXT;
|
---|
1716 | case SOP_DECREMENT_WRAP:
|
---|
1717 | return invert ? GL_INCR_WRAP_EXT : GL_DECR_WRAP_EXT;
|
---|
1718 | case SOP_INVERT:
|
---|
1719 | return GL_INVERT;
|
---|
1720 | };
|
---|
1721 | // to keep compiler happy
|
---|
1722 | return SOP_KEEP;
|
---|
1723 | }
|
---|
1724 | //---------------------------------------------------------------------
|
---|
1725 | GLuint GLRenderSystem::getCombinedMinMipFilter(void) const
|
---|
1726 | {
|
---|
1727 | switch(mMinFilter)
|
---|
1728 | {
|
---|
1729 | case FO_ANISOTROPIC:
|
---|
1730 | case FO_LINEAR:
|
---|
1731 | switch(mMipFilter)
|
---|
1732 | {
|
---|
1733 | case FO_ANISOTROPIC:
|
---|
1734 | case FO_LINEAR:
|
---|
1735 | // linear min, linear mip
|
---|
1736 | return GL_LINEAR_MIPMAP_LINEAR;
|
---|
1737 | case FO_POINT:
|
---|
1738 | // linear min, point mip
|
---|
1739 | return GL_LINEAR_MIPMAP_NEAREST;
|
---|
1740 | case FO_NONE:
|
---|
1741 | // linear min, no mip
|
---|
1742 | return GL_LINEAR;
|
---|
1743 | }
|
---|
1744 | break;
|
---|
1745 | case FO_POINT:
|
---|
1746 | case FO_NONE:
|
---|
1747 | switch(mMipFilter)
|
---|
1748 | {
|
---|
1749 | case FO_ANISOTROPIC:
|
---|
1750 | case FO_LINEAR:
|
---|
1751 | // nearest min, linear mip
|
---|
1752 | return GL_NEAREST_MIPMAP_LINEAR;
|
---|
1753 | case FO_POINT:
|
---|
1754 | // nearest min, point mip
|
---|
1755 | return GL_NEAREST_MIPMAP_NEAREST;
|
---|
1756 | case FO_NONE:
|
---|
1757 | // nearest min, no mip
|
---|
1758 | return GL_NEAREST;
|
---|
1759 | }
|
---|
1760 | break;
|
---|
1761 | }
|
---|
1762 |
|
---|
1763 | // should never get here
|
---|
1764 | return 0;
|
---|
1765 |
|
---|
1766 | }
|
---|
1767 | //---------------------------------------------------------------------
|
---|
1768 | void GLRenderSystem::_setTextureUnitFiltering(size_t unit,
|
---|
1769 | FilterType ftype, FilterOptions fo)
|
---|
1770 | {
|
---|
1771 | OgreGuard( "GLRenderSystem::_setTextureUnitFiltering" );
|
---|
1772 |
|
---|
1773 | glActiveTextureARB_ptr( GL_TEXTURE0 + unit );
|
---|
1774 | switch(ftype)
|
---|
1775 | {
|
---|
1776 | case FT_MIN:
|
---|
1777 | mMinFilter = fo;
|
---|
1778 | // Combine with existing mip filter
|
---|
1779 | glTexParameteri(
|
---|
1780 | mTextureTypes[unit],
|
---|
1781 | GL_TEXTURE_MIN_FILTER,
|
---|
1782 | getCombinedMinMipFilter());
|
---|
1783 | break;
|
---|
1784 | case FT_MAG:
|
---|
1785 | switch (fo)
|
---|
1786 | {
|
---|
1787 | case FO_ANISOTROPIC: // GL treats linear and aniso the same
|
---|
1788 | case FO_LINEAR:
|
---|
1789 | glTexParameteri(
|
---|
1790 | mTextureTypes[unit],
|
---|
1791 | GL_TEXTURE_MAG_FILTER,
|
---|
1792 | GL_LINEAR);
|
---|
1793 | break;
|
---|
1794 | case FO_POINT:
|
---|
1795 | case FO_NONE:
|
---|
1796 | glTexParameteri(
|
---|
1797 | mTextureTypes[unit],
|
---|
1798 | GL_TEXTURE_MAG_FILTER,
|
---|
1799 | GL_NEAREST);
|
---|
1800 | break;
|
---|
1801 | }
|
---|
1802 | break;
|
---|
1803 | case FT_MIP:
|
---|
1804 | mMipFilter = fo;
|
---|
1805 | // Combine with existing min filter
|
---|
1806 | glTexParameteri(
|
---|
1807 | mTextureTypes[unit],
|
---|
1808 | GL_TEXTURE_MIN_FILTER,
|
---|
1809 | getCombinedMinMipFilter());
|
---|
1810 | break;
|
---|
1811 | }
|
---|
1812 |
|
---|
1813 | glActiveTextureARB_ptr( GL_TEXTURE0 );
|
---|
1814 |
|
---|
1815 | OgreUnguard();
|
---|
1816 | }
|
---|
1817 | //---------------------------------------------------------------------
|
---|
1818 | GLfloat GLRenderSystem::_getCurrentAnisotropy(size_t unit)
|
---|
1819 | {
|
---|
1820 | GLfloat curAniso = 0;
|
---|
1821 | glGetTexParameterfv(mTextureTypes[unit],
|
---|
1822 | GL_TEXTURE_MAX_ANISOTROPY_EXT, &curAniso);
|
---|
1823 | return curAniso ? curAniso : 1;
|
---|
1824 | }
|
---|
1825 | //---------------------------------------------------------------------
|
---|
1826 | void GLRenderSystem::_setTextureLayerAnisotropy(size_t unit, unsigned int maxAnisotropy)
|
---|
1827 | {
|
---|
1828 | if (!mCapabilities->hasCapability(RSC_ANISOTROPY))
|
---|
1829 | return;
|
---|
1830 |
|
---|
1831 | GLfloat largest_supported_anisotropy = 0;
|
---|
1832 | glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &largest_supported_anisotropy);
|
---|
1833 | if (maxAnisotropy > largest_supported_anisotropy)
|
---|
1834 | maxAnisotropy = largest_supported_anisotropy ? largest_supported_anisotropy : 1;
|
---|
1835 | if (_getCurrentAnisotropy(unit) != maxAnisotropy)
|
---|
1836 | glTexParameterf(mTextureTypes[unit], GL_TEXTURE_MAX_ANISOTROPY_EXT, maxAnisotropy);
|
---|
1837 | }
|
---|
1838 | //-----------------------------------------------------------------------------
|
---|
1839 | void GLRenderSystem::_setTextureBlendMode(size_t stage, const LayerBlendModeEx& bm)
|
---|
1840 | {
|
---|
1841 | // Check to see if blending is supported
|
---|
1842 | if(!mCapabilities->hasCapability(RSC_BLENDING))
|
---|
1843 | return;
|
---|
1844 |
|
---|
1845 | GLenum src1op, src2op, cmd;
|
---|
1846 | GLfloat cv1[4], cv2[4];
|
---|
1847 |
|
---|
1848 | if (bm.blendType == LBT_COLOUR)
|
---|
1849 | {
|
---|
1850 | cv1[0] = bm.colourArg1.r;
|
---|
1851 | cv1[1] = bm.colourArg1.g;
|
---|
1852 | cv1[2] = bm.colourArg1.b;
|
---|
1853 | cv1[3] = bm.colourArg1.a;
|
---|
1854 | mManualBlendColours[stage][0] = bm.colourArg1;
|
---|
1855 |
|
---|
1856 |
|
---|
1857 | cv2[0] = bm.colourArg2.r;
|
---|
1858 | cv2[1] = bm.colourArg2.g;
|
---|
1859 | cv2[2] = bm.colourArg2.b;
|
---|
1860 | cv2[3] = bm.colourArg2.a;
|
---|
1861 | mManualBlendColours[stage][1] = bm.colourArg2;
|
---|
1862 | }
|
---|
1863 |
|
---|
1864 | if (bm.blendType == LBT_ALPHA)
|
---|
1865 | {
|
---|
1866 | cv1[0] = mManualBlendColours[stage][0].r;
|
---|
1867 | cv1[1] = mManualBlendColours[stage][0].g;
|
---|
1868 | cv1[2] = mManualBlendColours[stage][0].b;
|
---|
1869 | cv1[3] = bm.alphaArg1;
|
---|
1870 |
|
---|
1871 | cv2[0] = mManualBlendColours[stage][1].r;
|
---|
1872 | cv2[1] = mManualBlendColours[stage][1].g;
|
---|
1873 | cv2[2] = mManualBlendColours[stage][1].b;
|
---|
1874 | cv2[3] = bm.alphaArg2;
|
---|
1875 | }
|
---|
1876 |
|
---|
1877 | switch (bm.source1)
|
---|
1878 | {
|
---|
1879 | case LBS_CURRENT:
|
---|
1880 | src1op = GL_PREVIOUS;
|
---|
1881 | break;
|
---|
1882 | case LBS_TEXTURE:
|
---|
1883 | src1op = GL_TEXTURE;
|
---|
1884 | break;
|
---|
1885 | case LBS_MANUAL:
|
---|
1886 | src1op = GL_CONSTANT;
|
---|
1887 | break;
|
---|
1888 | case LBS_DIFFUSE:
|
---|
1889 | src1op = GL_PRIMARY_COLOR;
|
---|
1890 | break;
|
---|
1891 | // XXX
|
---|
1892 | case LBS_SPECULAR:
|
---|
1893 | default:
|
---|
1894 | src1op = 0;
|
---|
1895 | }
|
---|
1896 |
|
---|
1897 | switch (bm.source2)
|
---|
1898 | {
|
---|
1899 | case LBS_CURRENT:
|
---|
1900 | src2op = GL_PREVIOUS;
|
---|
1901 | break;
|
---|
1902 | case LBS_TEXTURE:
|
---|
1903 | src2op = GL_TEXTURE;
|
---|
1904 | break;
|
---|
1905 | case LBS_MANUAL:
|
---|
1906 | src2op = GL_CONSTANT;
|
---|
1907 | break;
|
---|
1908 | case LBS_DIFFUSE:
|
---|
1909 | src2op = GL_PRIMARY_COLOR;
|
---|
1910 | break;
|
---|
1911 | // XXX
|
---|
1912 | case LBS_SPECULAR:
|
---|
1913 | default:
|
---|
1914 | src2op = 0;
|
---|
1915 | }
|
---|
1916 |
|
---|
1917 | switch (bm.operation)
|
---|
1918 | {
|
---|
1919 | case LBX_SOURCE1:
|
---|
1920 | cmd = GL_REPLACE;
|
---|
1921 | break;
|
---|
1922 | case LBX_SOURCE2:
|
---|
1923 | cmd = GL_REPLACE;
|
---|
1924 | break;
|
---|
1925 | case LBX_MODULATE:
|
---|
1926 | cmd = GL_MODULATE;
|
---|
1927 | break;
|
---|
1928 | case LBX_MODULATE_X2:
|
---|
1929 | cmd = GL_MODULATE;
|
---|
1930 | break;
|
---|
1931 | case LBX_MODULATE_X4:
|
---|
1932 | cmd = GL_MODULATE;
|
---|
1933 | break;
|
---|
1934 | case LBX_ADD:
|
---|
1935 | cmd = GL_ADD;
|
---|
1936 | break;
|
---|
1937 | case LBX_ADD_SIGNED:
|
---|
1938 | cmd = GL_ADD_SIGNED;
|
---|
1939 | break;
|
---|
1940 | case LBX_SUBTRACT:
|
---|
1941 | cmd = GL_SUBTRACT;
|
---|
1942 | break;
|
---|
1943 | case LBX_BLEND_DIFFUSE_ALPHA:
|
---|
1944 | cmd = GL_INTERPOLATE;
|
---|
1945 | break;
|
---|
1946 | case LBX_BLEND_TEXTURE_ALPHA:
|
---|
1947 | cmd = GL_INTERPOLATE;
|
---|
1948 | break;
|
---|
1949 | case LBX_BLEND_CURRENT_ALPHA:
|
---|
1950 | cmd = GL_INTERPOLATE;
|
---|
1951 | break;
|
---|
1952 | case LBX_BLEND_MANUAL:
|
---|
1953 | cmd = GL_INTERPOLATE;
|
---|
1954 | break;
|
---|
1955 | case LBX_DOTPRODUCT:
|
---|
1956 | cmd = mCapabilities->hasCapability(RSC_DOT3)
|
---|
1957 | ? GL_DOT3_RGB : GL_MODULATE;
|
---|
1958 | break;
|
---|
1959 | default:
|
---|
1960 | cmd = 0;
|
---|
1961 | }
|
---|
1962 |
|
---|
1963 | glActiveTextureARB_ptr(GL_TEXTURE0 + stage);
|
---|
1964 | glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
---|
1965 |
|
---|
1966 | if (bm.blendType == LBT_COLOUR)
|
---|
1967 | {
|
---|
1968 | glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, cmd);
|
---|
1969 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB, src1op);
|
---|
1970 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB, src2op);
|
---|
1971 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_CONSTANT);
|
---|
1972 | }
|
---|
1973 | else
|
---|
1974 | {
|
---|
1975 | glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, cmd);
|
---|
1976 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, src1op);
|
---|
1977 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA, src2op);
|
---|
1978 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_CONSTANT);
|
---|
1979 | }
|
---|
1980 |
|
---|
1981 | float blendValue[4] = {0, 0, 0, bm.factor};
|
---|
1982 | switch (bm.operation)
|
---|
1983 | {
|
---|
1984 | case LBX_BLEND_DIFFUSE_ALPHA:
|
---|
1985 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_PRIMARY_COLOR);
|
---|
1986 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_PRIMARY_COLOR);
|
---|
1987 | break;
|
---|
1988 | case LBX_BLEND_TEXTURE_ALPHA:
|
---|
1989 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE);
|
---|
1990 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_TEXTURE);
|
---|
1991 | break;
|
---|
1992 | case LBX_BLEND_CURRENT_ALPHA:
|
---|
1993 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_PREVIOUS);
|
---|
1994 | glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_ALPHA, GL_PREVIOUS);
|
---|
1995 | break;
|
---|
1996 | case LBX_BLEND_MANUAL:
|
---|
1997 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, blendValue);
|
---|
1998 | break;
|
---|
1999 | default:
|
---|
2000 | break;
|
---|
2001 | };
|
---|
2002 |
|
---|
2003 | switch (bm.operation)
|
---|
2004 | {
|
---|
2005 | case LBX_MODULATE_X2:
|
---|
2006 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
2007 | GL_RGB_SCALE : GL_ALPHA_SCALE, 2);
|
---|
2008 | break;
|
---|
2009 | case LBX_MODULATE_X4:
|
---|
2010 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
2011 | GL_RGB_SCALE : GL_ALPHA_SCALE, 4);
|
---|
2012 | break;
|
---|
2013 | default:
|
---|
2014 | glTexEnvi(GL_TEXTURE_ENV, bm.blendType == LBT_COLOUR ?
|
---|
2015 | GL_RGB_SCALE : GL_ALPHA_SCALE, 1);
|
---|
2016 | break;
|
---|
2017 | }
|
---|
2018 |
|
---|
2019 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
|
---|
2020 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
|
---|
2021 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_ALPHA);
|
---|
2022 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
|
---|
2023 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
|
---|
2024 | glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_ALPHA, GL_SRC_ALPHA);
|
---|
2025 | if(bm.source1 == LBS_MANUAL)
|
---|
2026 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, cv1);
|
---|
2027 | if (bm.source2 == LBS_MANUAL)
|
---|
2028 | glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, cv2);
|
---|
2029 |
|
---|
2030 | glActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
2031 | }
|
---|
2032 | //---------------------------------------------------------------------
|
---|
2033 | void GLRenderSystem::setGLLightPositionDirection(Light* lt, GLenum lightindex)
|
---|
2034 | {
|
---|
2035 | // Set position / direction
|
---|
2036 | Vector4 vec;
|
---|
2037 | // Use general 4D vector which is the same as GL's approach
|
---|
2038 | vec = lt->getAs4DVector();
|
---|
2039 |
|
---|
2040 | #if OGRE_DOUBLE_PRECISION
|
---|
2041 | // Must convert to float*
|
---|
2042 | float tmp[4] = {vec.x, vec.y, vec.z, vec.w};
|
---|
2043 | glLightfv(lightindex, GL_POSITION, tmp);
|
---|
2044 | #else
|
---|
2045 | glLightfv(lightindex, GL_POSITION, vec.val);
|
---|
2046 | #endif
|
---|
2047 | // Set spotlight direction
|
---|
2048 | if (lt->getType() == Light::LT_SPOTLIGHT)
|
---|
2049 | {
|
---|
2050 | vec = lt->getDerivedDirection();
|
---|
2051 | vec.w = 0.0;
|
---|
2052 | #if OGRE_DOUBLE_PRECISION
|
---|
2053 | // Must convert to float*
|
---|
2054 | float tmp2[4] = {vec.x, vec.y, vec.z, vec.w};
|
---|
2055 | glLightfv(lightindex, GL_SPOT_DIRECTION, tmp2);
|
---|
2056 | #else
|
---|
2057 | glLightfv(lightindex, GL_SPOT_DIRECTION, vec.val);
|
---|
2058 | #endif
|
---|
2059 | }
|
---|
2060 | }
|
---|
2061 | //---------------------------------------------------------------------
|
---|
2062 | void GLRenderSystem::setVertexDeclaration(VertexDeclaration* decl)
|
---|
2063 | {
|
---|
2064 | }
|
---|
2065 | //---------------------------------------------------------------------
|
---|
2066 | void GLRenderSystem::setVertexBufferBinding(VertexBufferBinding* binding)
|
---|
2067 | {
|
---|
2068 | }
|
---|
2069 | //---------------------------------------------------------------------
|
---|
2070 | void GLRenderSystem::_render(const RenderOperation& op)
|
---|
2071 | {
|
---|
2072 | // Guard
|
---|
2073 | OgreGuard ("GLRenderSystem::_render");
|
---|
2074 | // Call super class
|
---|
2075 | RenderSystem::_render(op);
|
---|
2076 |
|
---|
2077 | void* pBufferData = 0;
|
---|
2078 |
|
---|
2079 | const VertexDeclaration::VertexElementList& decl =
|
---|
2080 | op.vertexData->vertexDeclaration->getElements();
|
---|
2081 | VertexDeclaration::VertexElementList::const_iterator elem, elemEnd;
|
---|
2082 | elemEnd = decl.end();
|
---|
2083 |
|
---|
2084 | for (elem = decl.begin(); elem != elemEnd; ++elem)
|
---|
2085 | {
|
---|
2086 | HardwareVertexBufferSharedPtr vertexBuffer =
|
---|
2087 | op.vertexData->vertexBufferBinding->getBuffer(elem->getSource());
|
---|
2088 | if(mCapabilities->hasCapability(RSC_VBO))
|
---|
2089 | {
|
---|
2090 | glBindBufferARB_ptr(GL_ARRAY_BUFFER_ARB,
|
---|
2091 | static_cast<const GLHardwareVertexBuffer*>(vertexBuffer.get())->getGLBufferId());
|
---|
2092 | pBufferData = VBO_BUFFER_OFFSET(elem->getOffset());
|
---|
2093 | }
|
---|
2094 | else
|
---|
2095 | {
|
---|
2096 | pBufferData = static_cast<const GLDefaultHardwareVertexBuffer*>(vertexBuffer.get())->getDataPtr(elem->getOffset());
|
---|
2097 | }
|
---|
2098 |
|
---|
2099 | unsigned int i = 0;
|
---|
2100 |
|
---|
2101 | switch(elem->getSemantic())
|
---|
2102 | {
|
---|
2103 | case VES_POSITION:
|
---|
2104 | glVertexPointer(VertexElement::getTypeCount(
|
---|
2105 | elem->getType()),
|
---|
2106 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2107 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2108 | pBufferData);
|
---|
2109 | glEnableClientState( GL_VERTEX_ARRAY );
|
---|
2110 | break;
|
---|
2111 | case VES_NORMAL:
|
---|
2112 | glNormalPointer(
|
---|
2113 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2114 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2115 | pBufferData);
|
---|
2116 | glEnableClientState( GL_NORMAL_ARRAY );
|
---|
2117 | break;
|
---|
2118 | case VES_DIFFUSE:
|
---|
2119 | glColorPointer(4,
|
---|
2120 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2121 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2122 | pBufferData);
|
---|
2123 | glEnableClientState( GL_COLOR_ARRAY );
|
---|
2124 | break;
|
---|
2125 | case VES_SPECULAR:
|
---|
2126 | glSecondaryColorPointerEXT_ptr(4,
|
---|
2127 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2128 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2129 | pBufferData);
|
---|
2130 | glEnableClientState( GL_SECONDARY_COLOR_ARRAY );
|
---|
2131 | break;
|
---|
2132 | case VES_TEXTURE_COORDINATES:
|
---|
2133 |
|
---|
2134 | for (i = 0; i < mCapabilities->getNumTextureUnits(); i++)
|
---|
2135 | {
|
---|
2136 | // Only set this texture unit's texcoord pointer if it
|
---|
2137 | // is supposed to be using this element's index
|
---|
2138 | if (mTextureCoordIndex[i] == elem->getIndex())
|
---|
2139 | {
|
---|
2140 | glClientActiveTextureARB_ptr(GL_TEXTURE0 + i);
|
---|
2141 | glTexCoordPointer(
|
---|
2142 | VertexElement::getTypeCount(elem->getType()),
|
---|
2143 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2144 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2145 | pBufferData);
|
---|
2146 | glEnableClientState( GL_TEXTURE_COORD_ARRAY );
|
---|
2147 | }
|
---|
2148 | }
|
---|
2149 | break;
|
---|
2150 | case VES_BLEND_INDICES:
|
---|
2151 | assert(mCapabilities->hasCapability(RSC_VERTEX_PROGRAM));
|
---|
2152 | glVertexAttribPointerARB_ptr(
|
---|
2153 | 7, // matrix indices are vertex attribute 7 (no def?)
|
---|
2154 | VertexElement::getTypeCount(elem->getType()),
|
---|
2155 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2156 | GL_FALSE, // normalisation disabled
|
---|
2157 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2158 | pBufferData);
|
---|
2159 | glEnableVertexAttribArrayARB_ptr(7);
|
---|
2160 | break;
|
---|
2161 | case VES_BLEND_WEIGHTS:
|
---|
2162 | assert(mCapabilities->hasCapability(RSC_VERTEX_PROGRAM));
|
---|
2163 | glVertexAttribPointerARB_ptr(
|
---|
2164 | 1, // weights are vertex attribute 1 (no def?)
|
---|
2165 | VertexElement::getTypeCount(elem->getType()),
|
---|
2166 | GLHardwareBufferManager::getGLType(elem->getType()),
|
---|
2167 | GL_FALSE, // normalisation disabled
|
---|
2168 | static_cast<GLsizei>(vertexBuffer->getVertexSize()),
|
---|
2169 | pBufferData);
|
---|
2170 | glEnableVertexAttribArrayARB_ptr(1);
|
---|
2171 | break;
|
---|
2172 | default:
|
---|
2173 | break;
|
---|
2174 | };
|
---|
2175 |
|
---|
2176 | }
|
---|
2177 |
|
---|
2178 | glClientActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
2179 |
|
---|
2180 | // Find the correct type to render
|
---|
2181 | GLint primType;
|
---|
2182 | switch (op.operationType)
|
---|
2183 | {
|
---|
2184 | case RenderOperation::OT_POINT_LIST:
|
---|
2185 | primType = GL_POINTS;
|
---|
2186 | break;
|
---|
2187 | case RenderOperation::OT_LINE_LIST:
|
---|
2188 | primType = GL_LINES;
|
---|
2189 | break;
|
---|
2190 | case RenderOperation::OT_LINE_STRIP:
|
---|
2191 | primType = GL_LINE_STRIP;
|
---|
2192 | break;
|
---|
2193 | case RenderOperation::OT_TRIANGLE_LIST:
|
---|
2194 | primType = GL_TRIANGLES;
|
---|
2195 | break;
|
---|
2196 | case RenderOperation::OT_TRIANGLE_STRIP:
|
---|
2197 | primType = GL_TRIANGLE_STRIP;
|
---|
2198 | break;
|
---|
2199 | case RenderOperation::OT_TRIANGLE_FAN:
|
---|
2200 | primType = GL_TRIANGLE_FAN;
|
---|
2201 | break;
|
---|
2202 | }
|
---|
2203 |
|
---|
2204 | if (op.useIndexes)
|
---|
2205 | {
|
---|
2206 | if(mCapabilities->hasCapability(RSC_VBO))
|
---|
2207 | {
|
---|
2208 | glBindBufferARB_ptr(GL_ELEMENT_ARRAY_BUFFER_ARB,
|
---|
2209 | static_cast<GLHardwareIndexBuffer*>(
|
---|
2210 | op.indexData->indexBuffer.get())->getGLBufferId());
|
---|
2211 |
|
---|
2212 | pBufferData = VBO_BUFFER_OFFSET(
|
---|
2213 | op.indexData->indexStart * op.indexData->indexBuffer->getIndexSize());
|
---|
2214 | }
|
---|
2215 | else
|
---|
2216 | {
|
---|
2217 | pBufferData = static_cast<GLDefaultHardwareIndexBuffer*>(
|
---|
2218 | op.indexData->indexBuffer.get())->getDataPtr(
|
---|
2219 | op.indexData->indexStart * op.indexData->indexBuffer->getIndexSize());
|
---|
2220 | }
|
---|
2221 |
|
---|
2222 | GLenum indexType = (op.indexData->indexBuffer->getType() == HardwareIndexBuffer::IT_16BIT) ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
|
---|
2223 |
|
---|
2224 | glDrawElements(primType, op.indexData->indexCount, indexType, pBufferData);
|
---|
2225 |
|
---|
2226 | }
|
---|
2227 | else
|
---|
2228 | {
|
---|
2229 | glDrawArrays(primType, op.vertexData->vertexStart,
|
---|
2230 | op.vertexData->vertexCount);
|
---|
2231 | }
|
---|
2232 |
|
---|
2233 | glDisableClientState( GL_VERTEX_ARRAY );
|
---|
2234 | for (int i = 0; i < mCapabilities->getNumTextureUnits(); i++)
|
---|
2235 | {
|
---|
2236 | glClientActiveTextureARB_ptr(GL_TEXTURE0 + i);
|
---|
2237 | glDisableClientState( GL_TEXTURE_COORD_ARRAY );
|
---|
2238 | }
|
---|
2239 | glClientActiveTextureARB_ptr(GL_TEXTURE0);
|
---|
2240 | glDisableClientState( GL_NORMAL_ARRAY );
|
---|
2241 | glDisableClientState( GL_COLOR_ARRAY );
|
---|
2242 | glDisableClientState( GL_SECONDARY_COLOR_ARRAY );
|
---|
2243 | if (mCapabilities->hasCapability(RSC_VERTEX_PROGRAM))
|
---|
2244 | {
|
---|
2245 | glDisableVertexAttribArrayARB_ptr(7); // disable indices
|
---|
2246 | glDisableVertexAttribArrayARB_ptr(1); // disable weights
|
---|
2247 | }
|
---|
2248 | glColor4f(1,1,1,1);
|
---|
2249 | glSecondaryColor3fEXT_ptr(0.0f, 0.0f, 0.0f);
|
---|
2250 |
|
---|
2251 | // UnGuard
|
---|
2252 | OgreUnguard();
|
---|
2253 | }
|
---|
2254 | //---------------------------------------------------------------------
|
---|
2255 | void GLRenderSystem::setNormaliseNormals(bool normalise)
|
---|
2256 | {
|
---|
2257 | if (normalise)
|
---|
2258 | glEnable(GL_NORMALIZE);
|
---|
2259 | else
|
---|
2260 | glDisable(GL_NORMALIZE);
|
---|
2261 |
|
---|
2262 | }
|
---|
2263 | //---------------------------------------------------------------------
|
---|
2264 | void GLRenderSystem::bindGpuProgram(GpuProgram* prg)
|
---|
2265 | {
|
---|
2266 | GLGpuProgram* glprg = static_cast<GLGpuProgram*>(prg);
|
---|
2267 | glprg->bindProgram();
|
---|
2268 | if (glprg->getType() == GPT_VERTEX_PROGRAM)
|
---|
2269 | {
|
---|
2270 | mCurrentVertexProgram = glprg;
|
---|
2271 | }
|
---|
2272 | else
|
---|
2273 | {
|
---|
2274 | mCurrentFragmentProgram = glprg;
|
---|
2275 | }
|
---|
2276 | }
|
---|
2277 | //---------------------------------------------------------------------
|
---|
2278 | void GLRenderSystem::unbindGpuProgram(GpuProgramType gptype)
|
---|
2279 | {
|
---|
2280 |
|
---|
2281 | if (gptype == GPT_VERTEX_PROGRAM && mCurrentVertexProgram)
|
---|
2282 | {
|
---|
2283 | mCurrentVertexProgram->unbindProgram();
|
---|
2284 | mCurrentVertexProgram = 0;
|
---|
2285 | }
|
---|
2286 | else if (gptype == GPT_FRAGMENT_PROGRAM && mCurrentFragmentProgram)
|
---|
2287 | {
|
---|
2288 | mCurrentFragmentProgram->unbindProgram();
|
---|
2289 | mCurrentFragmentProgram = 0;
|
---|
2290 | }
|
---|
2291 |
|
---|
2292 |
|
---|
2293 | }
|
---|
2294 | //---------------------------------------------------------------------
|
---|
2295 | void GLRenderSystem::bindGpuProgramParameters(GpuProgramType gptype, GpuProgramParametersSharedPtr params)
|
---|
2296 | {
|
---|
2297 | if (gptype == GPT_VERTEX_PROGRAM)
|
---|
2298 | {
|
---|
2299 | mCurrentVertexProgram->bindProgramParameters(params);
|
---|
2300 | }
|
---|
2301 | else
|
---|
2302 | {
|
---|
2303 | mCurrentFragmentProgram->bindProgramParameters(params);
|
---|
2304 | }
|
---|
2305 | }
|
---|
2306 | //---------------------------------------------------------------------
|
---|
2307 | void GLRenderSystem::setClipPlanes(const PlaneList& clipPlanes)
|
---|
2308 | {
|
---|
2309 | size_t i;
|
---|
2310 | size_t numClipPlanes;
|
---|
2311 | GLdouble clipPlane[4];
|
---|
2312 |
|
---|
2313 | numClipPlanes = clipPlanes.size();
|
---|
2314 | for (i = 0; i < numClipPlanes; ++i)
|
---|
2315 | {
|
---|
2316 | GLenum clipPlaneId = static_cast<GLenum>(GL_CLIP_PLANE0 + i);
|
---|
2317 | const Plane& plane = clipPlanes[i];
|
---|
2318 |
|
---|
2319 | if (i >= GL_MAX_CLIP_PLANES)
|
---|
2320 | {
|
---|
2321 | OGRE_EXCEPT(0, "Unable to set clip plane",
|
---|
2322 | "GLRenderSystem::setClipPlanes");
|
---|
2323 | }
|
---|
2324 |
|
---|
2325 | clipPlane[0] = plane.normal.x;
|
---|
2326 | clipPlane[1] = plane.normal.y;
|
---|
2327 | clipPlane[2] = plane.normal.z;
|
---|
2328 | clipPlane[3] = -plane.d;
|
---|
2329 |
|
---|
2330 | glClipPlane(clipPlaneId, clipPlane);
|
---|
2331 | glEnable(clipPlaneId);
|
---|
2332 | }
|
---|
2333 |
|
---|
2334 | // disable remaining clip planes
|
---|
2335 | for ( ; i < 6/*GL_MAX_CLIP_PLANES*/; ++i)
|
---|
2336 | {
|
---|
2337 | glDisable(static_cast<GLenum>(GL_CLIP_PLANE0 + i));
|
---|
2338 | }
|
---|
2339 | }
|
---|
2340 | //---------------------------------------------------------------------
|
---|
2341 | void GLRenderSystem::setScissorTest(bool enabled, size_t left,
|
---|
2342 | size_t top, size_t right, size_t bottom)
|
---|
2343 | {
|
---|
2344 | // GL measures from the bottom, not the top
|
---|
2345 | size_t targetHeight = mActiveRenderTarget->getHeight();
|
---|
2346 | // Calculate the "lower-left" corner of the viewport
|
---|
2347 | GLsizei w, h, x, y;
|
---|
2348 |
|
---|
2349 | if (enabled)
|
---|
2350 | {
|
---|
2351 | glEnable(GL_SCISSOR_TEST);
|
---|
2352 | // NB GL uses width / height rather than right / bottom
|
---|
2353 | x = left;
|
---|
2354 | y = targetHeight - bottom;
|
---|
2355 | w = right - left;
|
---|
2356 | h = bottom - top;
|
---|
2357 | glScissor(x, y, w, h);
|
---|
2358 | }
|
---|
2359 | else
|
---|
2360 | {
|
---|
2361 | glDisable(GL_SCISSOR_TEST);
|
---|
2362 | // GL requires you to reset the scissor when disabling
|
---|
2363 | w = mActiveViewport->getActualWidth();
|
---|
2364 | h = mActiveViewport->getActualHeight();
|
---|
2365 | x = mActiveViewport->getActualLeft();
|
---|
2366 | y = targetHeight - mActiveViewport->getActualTop() - h;
|
---|
2367 | glScissor(x, y, w, h);
|
---|
2368 | }
|
---|
2369 | }
|
---|
2370 | //---------------------------------------------------------------------
|
---|
2371 | void GLRenderSystem::clearFrameBuffer(unsigned int buffers,
|
---|
2372 | const ColourValue& colour, Real depth, unsigned short stencil)
|
---|
2373 | {
|
---|
2374 |
|
---|
2375 | GLbitfield flags = 0;
|
---|
2376 | if (buffers & FBT_COLOUR)
|
---|
2377 | {
|
---|
2378 | flags |= GL_COLOR_BUFFER_BIT;
|
---|
2379 | }
|
---|
2380 | if (buffers & FBT_DEPTH)
|
---|
2381 | {
|
---|
2382 | flags |= GL_DEPTH_BUFFER_BIT;
|
---|
2383 | }
|
---|
2384 | if (buffers & FBT_STENCIL)
|
---|
2385 | {
|
---|
2386 | flags |= GL_STENCIL_BUFFER_BIT;
|
---|
2387 | }
|
---|
2388 |
|
---|
2389 |
|
---|
2390 | // Enable depth & colour buffer for writing if it isn't
|
---|
2391 |
|
---|
2392 | if (!mDepthWrite)
|
---|
2393 | {
|
---|
2394 | glDepthMask( GL_TRUE );
|
---|
2395 | }
|
---|
2396 | bool colourMask = !mColourWrite[0] || !mColourWrite[1]
|
---|
2397 | || !mColourWrite[2] || mColourWrite[3];
|
---|
2398 | if (colourMask)
|
---|
2399 | {
|
---|
2400 | glColorMask(true, true, true, true);
|
---|
2401 | }
|
---|
2402 | // Set values
|
---|
2403 | glClearColor(colour.r, colour.g, colour.b, colour.a);
|
---|
2404 | glClearDepth(depth);
|
---|
2405 | glClearStencil(stencil);
|
---|
2406 | // Clear buffers
|
---|
2407 | glClear(flags);
|
---|
2408 | // Reset depth write state if appropriate
|
---|
2409 | // Enable depth buffer for writing if it isn't
|
---|
2410 | if (!mDepthWrite)
|
---|
2411 | {
|
---|
2412 | glDepthMask( GL_FALSE );
|
---|
2413 | }
|
---|
2414 | if (colourMask)
|
---|
2415 | {
|
---|
2416 | glColorMask(mColourWrite[0], mColourWrite[1], mColourWrite[2], mColourWrite[3]);
|
---|
2417 | }
|
---|
2418 |
|
---|
2419 | }
|
---|
2420 | // ------------------------------------------------------------------
|
---|
2421 | void GLRenderSystem::_makeProjectionMatrix(Real left, Real right,
|
---|
2422 | Real bottom, Real top, Real nearPlane, Real farPlane, Matrix4& dest,
|
---|
2423 | bool forGpuProgram)
|
---|
2424 | {
|
---|
2425 | Real width = right - left;
|
---|
2426 | Real height = top - bottom;
|
---|
2427 | Real q, qn;
|
---|
2428 | if (farPlane == 0)
|
---|
2429 | {
|
---|
2430 | // Infinite far plane
|
---|
2431 | q = Frustum::INFINITE_FAR_PLANE_ADJUST - 1;
|
---|
2432 | qn = nearPlane * (Frustum::INFINITE_FAR_PLANE_ADJUST - 2);
|
---|
2433 | }
|
---|
2434 | else
|
---|
2435 | {
|
---|
2436 | q = -(farPlane + nearPlane) / (farPlane - nearPlane);
|
---|
2437 | qn = -2 * (farPlane * nearPlane) / (farPlane - nearPlane);
|
---|
2438 | }
|
---|
2439 | dest = Matrix4::ZERO;
|
---|
2440 | dest[0][0] = 2 * nearPlane / width;
|
---|
2441 | dest[0][2] = (right+left) / width;
|
---|
2442 | dest[1][1] = 2 * nearPlane / height;
|
---|
2443 | dest[1][2] = (top+bottom) / height;
|
---|
2444 | dest[2][2] = q;
|
---|
2445 | dest[2][3] = qn;
|
---|
2446 | dest[3][2] = -1;
|
---|
2447 | }
|
---|
2448 |
|
---|
2449 | // ------------------------------------------------------------------
|
---|
2450 | void GLRenderSystem::setClipPlane (ushort index, Real A, Real B, Real C, Real D)
|
---|
2451 | {
|
---|
2452 | if (ushort(mClipPlanes.size()) < index+1)
|
---|
2453 | mClipPlanes.resize(index+1);
|
---|
2454 | mClipPlanes[index] = Vector4 (A, B, C, D);
|
---|
2455 | GLdouble plane[4] = { A, B, C, D };
|
---|
2456 | glClipPlane (GL_CLIP_PLANE0 + index, plane);
|
---|
2457 | }
|
---|
2458 |
|
---|
2459 | // ------------------------------------------------------------------
|
---|
2460 | void GLRenderSystem::setGLClipPlanes() const
|
---|
2461 | {
|
---|
2462 | size_t size = mClipPlanes.size();
|
---|
2463 | for (size_t i=0; i<size; i++)
|
---|
2464 | {
|
---|
2465 | const Vector4 &p = mClipPlanes[i];
|
---|
2466 | GLdouble plane[4] = { p.x, p.y, p.z, p.w };
|
---|
2467 | glClipPlane (GL_CLIP_PLANE0 + i, plane);
|
---|
2468 | }
|
---|
2469 | }
|
---|
2470 |
|
---|
2471 | // ------------------------------------------------------------------
|
---|
2472 | void GLRenderSystem::enableClipPlane (ushort index, bool enable)
|
---|
2473 | {
|
---|
2474 | glEnable (GL_CLIP_PLANE0 + index);
|
---|
2475 | }
|
---|
2476 | //---------------------------------------------------------------------
|
---|
2477 | HardwareOcclusionQuery* GLRenderSystem::createHardwareOcclusionQuery(void)
|
---|
2478 | {
|
---|
2479 | return new GLHardwareOcclusionQuery();
|
---|
2480 | }
|
---|
2481 | //---------------------------------------------------------------------
|
---|
2482 | Real GLRenderSystem::getHorizontalTexelOffset(void)
|
---|
2483 | {
|
---|
2484 | // No offset in GL
|
---|
2485 | return 0.0f;
|
---|
2486 | }
|
---|
2487 | //---------------------------------------------------------------------
|
---|
2488 | Real GLRenderSystem::getVerticalTexelOffset(void)
|
---|
2489 | {
|
---|
2490 | // No offset in GL
|
---|
2491 | return 0.0f;
|
---|
2492 | }
|
---|
2493 | //---------------------------------------------------------------------
|
---|
2494 | void GLRenderSystem::resizeRepositionWindow(void* wich)
|
---|
2495 | {
|
---|
2496 | mGLSupport->resizeRepositionWindow(wich);
|
---|
2497 | for (RenderTargetMap::iterator it = mRenderTargets.begin(); it != mRenderTargets.end(); ++it)
|
---|
2498 | {
|
---|
2499 | if (it->second->isActive())
|
---|
2500 | {
|
---|
2501 | mGLSupport->resizeReposition(it->second);
|
---|
2502 | }
|
---|
2503 | }
|
---|
2504 | }
|
---|
2505 | //---------------------------------------------------------------------
|
---|
2506 | void GLRenderSystem::_applyObliqueDepthProjection(Matrix4& matrix, const Plane& plane,
|
---|
2507 | bool forGpuProgram)
|
---|
2508 | {
|
---|
2509 | // Thanks to Eric Lenyel for posting this calculation at www.terathon.com
|
---|
2510 |
|
---|
2511 | // Calculate the clip-space corner point opposite the clipping plane
|
---|
2512 | // as (sgn(clipPlane.x), sgn(clipPlane.y), 1, 1) and
|
---|
2513 | // transform it into camera space by multiplying it
|
---|
2514 | // by the inverse of the projection matrix
|
---|
2515 |
|
---|
2516 | Vector4 q;
|
---|
2517 | q.x = (Math::Sign(plane.normal.x) + matrix[0][2]) / matrix[0][0];
|
---|
2518 | q.y = (Math::Sign(plane.normal.y) + matrix[1][2]) / matrix[1][1];
|
---|
2519 | q.z = -1.0F;
|
---|
2520 | q.w = (1.0F + matrix[2][2]) / matrix[2][3];
|
---|
2521 |
|
---|
2522 | // Calculate the scaled plane vector
|
---|
2523 | Vector4 clipPlane4d(plane.normal.x, plane.normal.y, plane.normal.z, plane.d);
|
---|
2524 | Vector4 c = clipPlane4d * (2.0F / (clipPlane4d.dotProduct(q)));
|
---|
2525 |
|
---|
2526 | // Replace the third row of the projection matrix
|
---|
2527 | matrix[2][0] = c.x;
|
---|
2528 | matrix[2][1] = c.y;
|
---|
2529 | matrix[2][2] = c.z + 1.0F;
|
---|
2530 | matrix[2][3] = c.w;
|
---|
2531 | }
|
---|
2532 | //---------------------------------------------------------------------
|
---|
2533 | void GLRenderSystem::_oneTimeContextInitialization()
|
---|
2534 | {
|
---|
2535 | // Set nicer lighting model -- d3d9 has this by default
|
---|
2536 | glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);
|
---|
2537 | glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
|
---|
2538 | glEnable(GL_COLOR_SUM);
|
---|
2539 |
|
---|
2540 | // Check for FSAA
|
---|
2541 | // Enable the extension if it was enabled by the GLSupport
|
---|
2542 | if (mGLSupport->checkExtension("GL_ARB_multisample"))
|
---|
2543 | {
|
---|
2544 | int fsaa_active = false;
|
---|
2545 | glGetIntegerv(GL_SAMPLE_BUFFERS_ARB,(GLint*)&fsaa_active);
|
---|
2546 | if(fsaa_active)
|
---|
2547 | {
|
---|
2548 | glEnable(GL_MULTISAMPLE_ARB);
|
---|
2549 | LogManager::getSingleton().logMessage("Using FSAA from GL_ARB_multisample extension.");
|
---|
2550 | }
|
---|
2551 | }
|
---|
2552 | }
|
---|
2553 | //---------------------------------------------------------------------
|
---|
2554 | void GLRenderSystem::_setRenderTarget(RenderTarget *target)
|
---|
2555 | {
|
---|
2556 | mActiveRenderTarget = target;
|
---|
2557 | // Switch context if different from current one
|
---|
2558 | ContextMap::iterator i = mContextMap.find(target);
|
---|
2559 | if(i != mContextMap.end() && mCurrentContext != i->second) {
|
---|
2560 | mCurrentContext->endCurrent();
|
---|
2561 | mCurrentContext = i->second;
|
---|
2562 | // Check if the context has already done one-time initialisation
|
---|
2563 | if(!mCurrentContext->getInitialized()) {
|
---|
2564 | _oneTimeContextInitialization();
|
---|
2565 | mCurrentContext->setInitialized();
|
---|
2566 | }
|
---|
2567 | mCurrentContext->setCurrent();
|
---|
2568 | }
|
---|
2569 | }
|
---|
2570 | //---------------------------------------------------------------------
|
---|
2571 | void GLRenderSystem::_registerContext(RenderTarget *target, GLContext *context)
|
---|
2572 | {
|
---|
2573 | mContextMap[target] = context;
|
---|
2574 | }
|
---|
2575 | //---------------------------------------------------------------------
|
---|
2576 | void GLRenderSystem::_unregisterContext(RenderTarget *target)
|
---|
2577 | {
|
---|
2578 | ContextMap::iterator i = mContextMap.find(target);
|
---|
2579 | if(i != mContextMap.end() && mCurrentContext == i->second) {
|
---|
2580 | // Change the context to something else so that a valid context
|
---|
2581 | // remains active. When this is the main context being unregistered,
|
---|
2582 | // we set the main context to 0.
|
---|
2583 | if(mCurrentContext != mMainContext) {
|
---|
2584 | mCurrentContext->endCurrent();
|
---|
2585 | mCurrentContext = mMainContext;
|
---|
2586 | mCurrentContext->setCurrent();
|
---|
2587 | } else {
|
---|
2588 | mMainContext = 0;
|
---|
2589 | }
|
---|
2590 | }
|
---|
2591 | mContextMap.erase(target);
|
---|
2592 | }
|
---|
2593 | //---------------------------------------------------------------------
|
---|
2594 | GLContext *GLRenderSystem::_getMainContext() {
|
---|
2595 | return mMainContext;
|
---|
2596 | }
|
---|
2597 | //---------------------------------------------------------------------
|
---|
2598 | Real GLRenderSystem::getMinimumDepthInputValue(void)
|
---|
2599 | {
|
---|
2600 | // Range [-1.0f, 1.0f]
|
---|
2601 | return -1.0f;
|
---|
2602 | }
|
---|
2603 | //---------------------------------------------------------------------
|
---|
2604 | Real GLRenderSystem::getMaximumDepthInputValue(void)
|
---|
2605 | {
|
---|
2606 | // Range [-1.0f, 1.0f]
|
---|
2607 | return 1.0f;
|
---|
2608 | }
|
---|
2609 |
|
---|
2610 | }
|
---|