[97] | 1 | /*
|
---|
| 2 | -----------------------------------------------------------------------------
|
---|
| 3 | This source file is part of OGRE
|
---|
| 4 | (Object-oriented Graphics Rendering Engine)
|
---|
| 5 | For the latest info, see http://ogre.sourceforge.net/
|
---|
| 6 |
|
---|
| 7 | Copyright (c) 2000-2005 The OGRE Team
|
---|
| 8 | Also see acknowledgements in Readme.html
|
---|
| 9 |
|
---|
| 10 | This program is free software; you can redistribute it and/or modify it under
|
---|
| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
|
---|
| 12 | Foundation; either version 2 of the License, or (at your option) any later
|
---|
| 13 | version.
|
---|
| 14 |
|
---|
| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
|
---|
| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
---|
| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
|
---|
| 18 |
|
---|
| 19 | You should have received a copy of the GNU Lesser General Public License along with
|
---|
| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
---|
| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
|
---|
| 22 | http://www.gnu.org/copyleft/lesser.txt.s
|
---|
| 23 | -----------------------------------------------------------------------------
|
---|
| 24 | */
|
---|
| 25 |
|
---|
| 26 |
|
---|
| 27 | #include "OgreGLRenderSystem.h"
|
---|
| 28 | #include "OgreRenderSystem.h"
|
---|
| 29 | #include "OgreLogManager.h"
|
---|
| 30 | #include "OgreStringConverter.h"
|
---|
| 31 | #include "OgreLight.h"
|
---|
| 32 | #include "OgreCamera.h"
|
---|
| 33 | #include "OgreGLTextureManager.h"
|
---|
| 34 | #include "OgreGLHardwareVertexBuffer.h"
|
---|
| 35 | #include "OgreGLHardwareIndexBuffer.h"
|
---|
| 36 | #include "OgreGLDefaultHardwareBufferManager.h"
|
---|
| 37 | #include "OgreGLUtil.h"
|
---|
| 38 | #include "OgreGLGpuProgram.h"
|
---|
| 39 | #include "OgreGLGpuNvparseProgram.h"
|
---|
| 40 | #include "ATI_FS_GLGpuProgram.h"
|
---|
| 41 | #include "OgreGLGpuProgramManager.h"
|
---|
| 42 | #include "OgreException.h"
|
---|
| 43 | #include "OgreGLATIFSInit.h"
|
---|
| 44 | #include "OgreGLSLExtSupport.h"
|
---|
| 45 | #include "OgreGLHardwareOcclusionQuery.h"
|
---|
| 46 | #include "OgreGLContext.h"
|
---|
| 47 |
|
---|
| 48 |
|
---|
| 49 | #ifdef HAVE_CONFIG_H
|
---|
| 50 | # include "config.h"
|
---|
| 51 | #endif
|
---|
| 52 |
|
---|
| 53 | // Convenience macro from ARB_vertex_buffer_object spec
|
---|
| 54 | #define VBO_BUFFER_OFFSET(i) ((char *)NULL + (i))
|
---|
| 55 |
|
---|
| 56 | // Pointers to extension functions
|
---|
| 57 | GL_ActiveTextureARB_Func glActiveTextureARB_ptr;
|
---|
| 58 | GL_ClientActiveTextureARB_Func glClientActiveTextureARB_ptr;
|
---|
| 59 | GL_SecondaryColorPointerEXT_Func glSecondaryColorPointerEXT_ptr;
|
---|
[115] | 60 | GL_SecondaryColor3fEXT_Func glSecondaryColor3fEXT_ptr;
|
---|
[97] | 61 | GL_GenBuffersARB_Func glGenBuffersARB_ptr;
|
---|
| 62 | GL_BindBufferARB_Func glBindBufferARB_ptr;
|
---|
| 63 | GL_DeleteBuffersARB_Func glDeleteBuffersARB_ptr;
|
---|
| 64 | GL_MapBufferARB_Func glMapBufferARB_ptr;
|
---|
| 65 | GL_UnmapBufferARB_Func glUnmapBufferARB_ptr;
|
---|
| 66 | GL_BufferDataARB_Func glBufferDataARB_ptr;
|
---|
| 67 | GL_BufferSubDataARB_Func glBufferSubDataARB_ptr;
|
---|
| 68 | GL_GetBufferSubDataARB_Func glGetBufferSubDataARB_ptr;
|
---|
| 69 | GL_GenProgramsARB_Func glGenProgramsARB_ptr;
|
---|
| 70 | GL_DeleteProgramsARB_Func glDeleteProgramsARB_ptr;
|
---|
| 71 | GL_BindProgramARB_Func glBindProgramARB_ptr;
|
---|
| 72 | GL_ProgramStringARB_Func glProgramStringARB_ptr;
|
---|
| 73 | GL_ProgramLocalParameter4fvARB_Func glProgramLocalParameter4fvARB_ptr;
|
---|
| 74 | GL_ProgramParameter4fvNV_Func glProgramParameter4fvNV_ptr;
|
---|
| 75 | GL_VertexAttribPointerARB_Func glVertexAttribPointerARB_ptr;
|
---|
| 76 | GL_EnableVertexAttribArrayARB_Func glEnableVertexAttribArrayARB_ptr;
|
---|
| 77 | GL_DisableVertexAttribArrayARB_Func glDisableVertexAttribArrayARB_ptr;
|
---|
| 78 | GL_CombinerStageParameterfvNV_Func glCombinerStageParameterfvNV_ptr;
|
---|
| 79 | GL_CombinerParameterfvNV_Func glCombinerParameterfvNV_ptr;
|
---|
| 80 | GL_CombinerParameteriNV_Func glCombinerParameteriNV_ptr;
|
---|
| 81 | GL_GetProgramivARB_Func glGetProgramivARB_ptr;
|
---|
| 82 | GL_LoadProgramNV_Func glLoadProgramNV_ptr;
|
---|
| 83 | GL_CombinerInputNV_Func glCombinerInputNV_ptr;
|
---|
| 84 | GL_CombinerOutputNV_Func glCombinerOutputNV_ptr;
|
---|
| 85 | GL_FinalCombinerInputNV_Func glFinalCombinerInputNV_ptr;
|
---|
| 86 | GL_TrackMatrixNV_Func glTrackMatrixNV_ptr;
|
---|
| 87 | PFNGLCOMPRESSEDTEXIMAGE1DARBPROC glCompressedTexImage1DARB_ptr;
|
---|
| 88 | PFNGLCOMPRESSEDTEXIMAGE2DARBPROC glCompressedTexImage2DARB_ptr;
|
---|
| 89 | PFNGLCOMPRESSEDTEXIMAGE3DARBPROC glCompressedTexImage3DARB_ptr;
|
---|
| 90 | PFNGLCOMPRESSEDTEXSUBIMAGE1DARBPROC glCompressedTexSubImage1DARB_ptr;
|
---|
| 91 | PFNGLCOMPRESSEDTEXSUBIMAGE2DARBPROC glCompressedTexSubImage2DARB_ptr;
|
---|
| 92 | PFNGLCOMPRESSEDTEXSUBIMAGE3DARBPROC glCompressedTexSubImage3DARB_ptr;
|
---|
| 93 | PFNGLGETCOMPRESSEDTEXIMAGEARBPROC glGetCompressedTexImageARB_ptr;
|
---|
| 94 | GL_ActiveStencilFaceEXT_Func glActiveStencilFaceEXT_ptr;
|
---|
| 95 | GL_GenOcclusionQueriesNV_Func glGenOcclusionQueriesNV_ptr;
|
---|
| 96 | GL_DeleteOcclusionQueriesNV_Func glDeleteOcclusionQueriesNV_ptr;
|
---|
| 97 | GL_BeginOcclusionQueryNV_Func glBeginOcclusionQueryNV_ptr;
|
---|
| 98 | GL_EndOcclusionQueryNV_Func glEndOcclusionQueryNV_ptr;
|
---|
| 99 | GL_GetOcclusionQueryuivNV_Func glGetOcclusionQueryuivNV_ptr;
|
---|
| 100 | GL_GenQueriesARB_Func glGenQueriesARB_ptr;
|
---|
| 101 | GL_DeleteQueriesARB_Func glDeleteQueriesARB_ptr;
|
---|
| 102 | GL_BeginQueryARB_Func glBeginQueryARB_ptr;
|
---|
| 103 | GL_EndQueryARB_Func glEndQueryARB_ptr;
|
---|
[115] | 104 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 105 | GL_GetQueryivARB_Func glGetQueryivARB_ptr;
|
---|
| 106 | GL_GetQueryObjectivARB_Func glGetQueryObjectivARB_ptr;
|
---|
[115] | 107 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 108 | GL_GetQueryObjectuivARB_Func glGetQueryObjectuivARB_ptr;
|
---|
| 109 |
|
---|
| 110 | namespace Ogre {
|
---|
| 111 |
|
---|
| 112 | // Callback function used when registering GLGpuPrograms
|
---|
| 113 | GpuProgram* createGLArbGpuProgram(ResourceManager* creator,
|
---|
| 114 | const String& name, ResourceHandle handle,
|
---|
| 115 | const String& group, bool isManual, ManualResourceLoader* loader,
|
---|
| 116 | GpuProgramType gptype, const String& syntaxCode)
|
---|
| 117 | {
|
---|
| 118 | GLArbGpuProgram* ret = new GLArbGpuProgram(
|
---|
| 119 | creator, name, handle, group, isManual, loader);
|
---|
| 120 | ret->setType(gptype);
|
---|
| 121 | ret->setSyntaxCode(syntaxCode);
|
---|
| 122 | return ret;
|
---|
| 123 | }
|
---|
| 124 |
|
---|
| 125 | GpuProgram* createGLGpuNvparseProgram(ResourceManager* creator,
|
---|
| 126 | const String& name, ResourceHandle handle,
|
---|
| 127 | const String& group, bool isManual, ManualResourceLoader* loader,
|
---|
| 128 | GpuProgramType gptype, const String& syntaxCode)
|
---|
| 129 | {
|
---|
| 130 | GLGpuNvparseProgram* ret = new GLGpuNvparseProgram(
|
---|
| 131 | creator, name, handle, group, isManual, loader);
|
---|
| 132 | ret->setType(gptype);
|
---|
| 133 | ret->setSyntaxCode(syntaxCode);
|
---|
| 134 | return ret;
|
---|
| 135 | }
|
---|
| 136 |
|
---|
| 137 | GpuProgram* createGL_ATI_FS_GpuProgram(ResourceManager* creator,
|
---|
| 138 | const String& name, ResourceHandle handle,
|
---|
| 139 | const String& group, bool isManual, ManualResourceLoader* loader,
|
---|
| 140 | GpuProgramType gptype, const String& syntaxCode)
|
---|
| 141 | {
|
---|
| 142 |
|
---|
| 143 | ATI_FS_GLGpuProgram* ret = new ATI_FS_GLGpuProgram(
|
---|
| 144 | creator, name, handle, group, isManual, loader);
|
---|
| 145 | ret->setType(gptype);
|
---|
| 146 | ret->setSyntaxCode(syntaxCode);
|
---|
| 147 | return ret;
|
---|
| 148 | }
|
---|
| 149 |
|
---|
| 150 | GLRenderSystem::GLRenderSystem()
|
---|
| 151 | : mExternalWindowHandle(0), mDepthWrite(true), mHardwareBufferManager(0),
|
---|
| 152 | mGpuProgramManager(0)
|
---|
| 153 | {
|
---|
| 154 | size_t i;
|
---|
| 155 |
|
---|
| 156 | OgreGuard( "GLRenderSystem::GLRenderSystem" );
|
---|
| 157 |
|
---|
| 158 | LogManager::getSingleton().logMessage(getName() + " created.");
|
---|
| 159 |
|
---|
| 160 | // Get our GLSupport
|
---|
| 161 | mGLSupport = getGLSupport();
|
---|
| 162 |
|
---|
| 163 | for( i=0; i<MAX_LIGHTS; i++ )
|
---|
| 164 | mLights[i] = NULL;
|
---|
| 165 |
|
---|
| 166 | mWorldMatrix = Matrix4::IDENTITY;
|
---|
| 167 | mViewMatrix = Matrix4::IDENTITY;
|
---|
| 168 |
|
---|
| 169 | initConfigOptions();
|
---|
| 170 |
|
---|
| 171 | mColourWrite[0] = mColourWrite[1] = mColourWrite[2] = mColourWrite[3] = true;
|
---|
| 172 |
|
---|
| 173 | for (i = 0; i < OGRE_MAX_TEXTURE_COORD_SETS; i++)
|
---|
| 174 | {
|
---|
| 175 | mTextureCoordIndex[i] = 0;
|
---|
| 176 | }
|
---|
| 177 |
|
---|
| 178 | for (i = 0; i < OGRE_MAX_TEXTURE_LAYERS; i++)
|
---|
| 179 | {
|
---|
| 180 | mTextureTypes[i] = 0;
|
---|
| 181 | }
|
---|
| 182 |
|
---|
| 183 | mActiveRenderTarget = 0;
|
---|
| 184 | mCurrentContext = 0;
|
---|
| 185 | mMainContext = 0;
|
---|
| 186 |
|
---|
| 187 | mGLInitialized = false;
|
---|
| 188 |
|
---|
| 189 | glActiveTextureARB_ptr = 0;
|
---|
| 190 | glClientActiveTextureARB_ptr = 0;
|
---|
| 191 | glSecondaryColorPointerEXT_ptr = 0;
|
---|
[115] | 192 | glSecondaryColor3fEXT_ptr = 0;
|
---|
[97] | 193 | glGenBuffersARB_ptr = 0;
|
---|
| 194 | glBindBufferARB_ptr = 0;
|
---|
| 195 | glDeleteBuffersARB_ptr = 0;
|
---|
| 196 | glMapBufferARB_ptr = 0;
|
---|
| 197 | glUnmapBufferARB_ptr = 0;
|
---|
| 198 | glBufferDataARB_ptr = 0;
|
---|
| 199 | glBufferSubDataARB_ptr = 0;
|
---|
| 200 | glGetBufferSubDataARB_ptr = 0;
|
---|
| 201 | glGenProgramsARB_ptr = 0;
|
---|
| 202 | glDeleteProgramsARB_ptr = 0;
|
---|
| 203 | glBindProgramARB_ptr = 0;
|
---|
| 204 | glProgramStringARB_ptr = 0;
|
---|
| 205 | glProgramLocalParameter4fvARB_ptr = 0;
|
---|
| 206 | glProgramParameter4fvNV_ptr = 0;
|
---|
| 207 | glCombinerStageParameterfvNV_ptr = 0;
|
---|
| 208 | glCombinerParameterfvNV_ptr = 0;
|
---|
| 209 | glCombinerParameteriNV_ptr = 0;
|
---|
| 210 | glGetProgramivARB_ptr = 0;
|
---|
| 211 | glLoadProgramNV_ptr = 0;
|
---|
| 212 | glCombinerInputNV_ptr = 0;
|
---|
| 213 | glCombinerOutputNV_ptr = 0;
|
---|
| 214 | glFinalCombinerInputNV_ptr = 0;
|
---|
| 215 | glTrackMatrixNV_ptr = 0;
|
---|
| 216 | glActiveStencilFaceEXT_ptr = 0;
|
---|
| 217 | glGenOcclusionQueriesNV_ptr = 0;
|
---|
| 218 | glDeleteOcclusionQueriesNV_ptr = 0;
|
---|
| 219 | glBeginOcclusionQueryNV_ptr = 0;
|
---|
| 220 | glEndOcclusionQueryNV_ptr = 0;
|
---|
| 221 | glGetOcclusionQueryuivNV_ptr = 0;
|
---|
| 222 | glGenQueriesARB_ptr = 0;
|
---|
| 223 | glDeleteQueriesARB_ptr = 0;
|
---|
| 224 | glBeginQueryARB_ptr = 0;
|
---|
| 225 | glEndQueryARB_ptr = 0;
|
---|
[115] | 226 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 227 | glGetQueryivARB_ptr = 0;
|
---|
| 228 | glGetQueryObjectivARB_ptr = 0;
|
---|
[115] | 229 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 230 | glGetQueryObjectuivARB_ptr = 0;
|
---|
| 231 |
|
---|
| 232 | mCurrentLights = 0;
|
---|
| 233 | mMinFilter = FO_LINEAR;
|
---|
| 234 | mMipFilter = FO_POINT;
|
---|
| 235 | mCurrentVertexProgram = 0;
|
---|
| 236 | mCurrentFragmentProgram = 0;
|
---|
| 237 |
|
---|
| 238 | mClipPlanes.reserve(6);
|
---|
| 239 |
|
---|
| 240 | OgreUnguard();
|
---|
| 241 | }
|
---|
| 242 |
|
---|
| 243 | GLRenderSystem::~GLRenderSystem()
|
---|
| 244 | {
|
---|
| 245 | shutdown();
|
---|
| 246 |
|
---|
| 247 | // Destroy render windows
|
---|
| 248 | RenderTargetMap::iterator i;
|
---|
| 249 | for (i = mRenderTargets.begin(); i != mRenderTargets.end(); ++i)
|
---|
| 250 | {
|
---|
| 251 | delete i->second;
|
---|
| 252 | }
|
---|
| 253 | mRenderTargets.clear();
|
---|
| 254 |
|
---|
| 255 | if (mTextureManager)
|
---|
| 256 | delete mTextureManager;
|
---|
| 257 |
|
---|
| 258 | delete mCapabilities;
|
---|
| 259 | delete mGLSupport;
|
---|
| 260 | }
|
---|
| 261 |
|
---|
| 262 | const String& GLRenderSystem::getName(void) const
|
---|
| 263 | {
|
---|
| 264 | static String strName("OpenGL Rendering Subsystem");
|
---|
| 265 | return strName;
|
---|
| 266 | }
|
---|
| 267 |
|
---|
| 268 | void GLRenderSystem::initConfigOptions(void)
|
---|
| 269 | {
|
---|
| 270 | OgreGuard("GLRenderSystem::initConfigOptions");
|
---|
| 271 | mGLSupport->addConfig();
|
---|
| 272 | OgreUnguard();
|
---|
| 273 | }
|
---|
| 274 |
|
---|
| 275 | ConfigOptionMap& GLRenderSystem::getConfigOptions(void)
|
---|
| 276 | {
|
---|
| 277 | return mGLSupport->getConfigOptions();
|
---|
| 278 | }
|
---|
| 279 |
|
---|
| 280 | void GLRenderSystem::setConfigOption(const String &name, const String &value)
|
---|
| 281 | {
|
---|
| 282 | mGLSupport->setConfigOption(name, value);
|
---|
| 283 | }
|
---|
| 284 |
|
---|
| 285 | String GLRenderSystem::validateConfigOptions(void)
|
---|
| 286 | {
|
---|
| 287 | // XXX Return an error string if something is invalid
|
---|
| 288 | return mGLSupport->validateConfig();
|
---|
| 289 | }
|
---|
| 290 |
|
---|
| 291 | RenderWindow* GLRenderSystem::initialise(bool autoCreateWindow, const String& windowTitle)
|
---|
| 292 | {
|
---|
| 293 | mGLSupport->start();
|
---|
| 294 |
|
---|
| 295 | RenderWindow* autoWindow = mGLSupport->createWindow(autoCreateWindow, this, windowTitle);
|
---|
| 296 |
|
---|
| 297 |
|
---|
| 298 | _setCullingMode( mCullingMode );
|
---|
| 299 |
|
---|
| 300 | return autoWindow;
|
---|
| 301 | }
|
---|
| 302 |
|
---|
| 303 | void GLRenderSystem::initGL(void)
|
---|
| 304 | {
|
---|
| 305 | mGLSupport->initialiseExtensions();
|
---|
| 306 |
|
---|
| 307 | LogManager::getSingleton().logMessage(
|
---|
| 308 | "***************************\n"
|
---|
| 309 | "*** GL Renderer Started ***\n"
|
---|
| 310 | "***************************");
|
---|
| 311 |
|
---|
| 312 |
|
---|
| 313 | // Check for hardware mipmapping support.
|
---|
| 314 | // Note: This is disabled for ATI cards until they fix their drivers
|
---|
| 315 | if(mGLSupport->getGLVendor() != "ATI" &&
|
---|
| 316 | (mGLSupport->checkMinGLVersion("1.4.0") ||
|
---|
| 317 | mGLSupport->checkExtension("GL_SGIS_generate_mipmap")))
|
---|
| 318 | {
|
---|
| 319 | mCapabilities->setCapability(RSC_AUTOMIPMAP);
|
---|
| 320 | }
|
---|
| 321 |
|
---|
| 322 | // Check for blending support
|
---|
| 323 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
| 324 | mGLSupport->checkExtension("GL_ARB_texture_env_combine") ||
|
---|
| 325 | mGLSupport->checkExtension("GL_EXT_texture_env_combine"))
|
---|
| 326 | {
|
---|
| 327 | mCapabilities->setCapability(RSC_BLENDING);
|
---|
| 328 | }
|
---|
| 329 |
|
---|
| 330 | // Check for Multitexturing support and set number of texture units
|
---|
| 331 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
| 332 | mGLSupport->checkExtension("GL_ARB_multitexture"))
|
---|
| 333 | {
|
---|
| 334 | GLint units;
|
---|
| 335 | glGetIntegerv( GL_MAX_TEXTURE_UNITS, &units );
|
---|
| 336 |
|
---|
| 337 | mCapabilities->setNumTextureUnits(units);
|
---|
| 338 | }
|
---|
| 339 | else
|
---|
| 340 | {
|
---|
| 341 | // If no multitexture support then set one texture unit
|
---|
| 342 | mCapabilities->setNumTextureUnits(1);
|
---|
| 343 | }
|
---|
| 344 |
|
---|
| 345 | // Check for Anisotropy support
|
---|
| 346 | if(mGLSupport->checkExtension("GL_EXT_texture_filter_anisotropic"))
|
---|
| 347 | {
|
---|
| 348 | mCapabilities->setCapability(RSC_ANISOTROPY);
|
---|
| 349 | }
|
---|
| 350 |
|
---|
| 351 | // Check for DOT3 support
|
---|
| 352 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
| 353 | mGLSupport->checkExtension("GL_ARB_texture_env_dot3") ||
|
---|
| 354 | mGLSupport->checkExtension("GL_EXT_texture_env_dot3"))
|
---|
| 355 | {
|
---|
| 356 | mCapabilities->setCapability(RSC_DOT3);
|
---|
| 357 | }
|
---|
| 358 |
|
---|
| 359 | // Check for cube mapping
|
---|
| 360 | if(mGLSupport->checkMinGLVersion("1.3.0") ||
|
---|
| 361 | mGLSupport->checkExtension("GL_ARB_texture_cube_map") ||
|
---|
| 362 | mGLSupport->checkExtension("GL_EXT_texture_cube_map"))
|
---|
| 363 | {
|
---|
| 364 | mCapabilities->setCapability(RSC_CUBEMAPPING);
|
---|
| 365 | }
|
---|
| 366 |
|
---|
| 367 | // Check for hardware stencil support and set bit depth
|
---|
| 368 | GLint stencil;
|
---|
| 369 | glGetIntegerv(GL_STENCIL_BITS,&stencil);
|
---|
| 370 |
|
---|
| 371 | if(stencil)
|
---|
| 372 | {
|
---|
| 373 | mCapabilities->setCapability(RSC_HWSTENCIL);
|
---|
| 374 | mCapabilities->setStencilBufferBitDepth(stencil);
|
---|
| 375 | }
|
---|
| 376 |
|
---|
| 377 | // Check for VBO support
|
---|
| 378 | if(mGLSupport->checkExtension("GL_ARB_vertex_buffer_object"))
|
---|
| 379 | {
|
---|
| 380 | mCapabilities->setCapability(RSC_VBO);
|
---|
| 381 |
|
---|
| 382 | mHardwareBufferManager = new GLHardwareBufferManager;
|
---|
| 383 | }
|
---|
| 384 | else
|
---|
| 385 | {
|
---|
| 386 | mHardwareBufferManager = new GLDefaultHardwareBufferManager;
|
---|
| 387 | }
|
---|
| 388 |
|
---|
| 389 | // XXX Need to check for nv2 support and make a program manager for it
|
---|
| 390 | // XXX Probably nv1 as well for older cards
|
---|
| 391 | // GPU Program Manager setup
|
---|
| 392 | mGpuProgramManager = new GLGpuProgramManager();
|
---|
| 393 |
|
---|
| 394 | if(mGLSupport->checkExtension("GL_ARB_vertex_program"))
|
---|
| 395 | {
|
---|
| 396 | mCapabilities->setCapability(RSC_VERTEX_PROGRAM);
|
---|
| 397 |
|
---|
| 398 | // Vertex Program Properties
|
---|
| 399 | mCapabilities->setMaxVertexProgramVersion("arbvp1");
|
---|
| 400 | mCapabilities->setVertexProgramConstantBoolCount(0);
|
---|
| 401 | mCapabilities->setVertexProgramConstantIntCount(0);
|
---|
| 402 | mCapabilities->setVertexProgramConstantFloatCount(
|
---|
| 403 | GL_MAX_PROGRAM_LOCAL_PARAMETERS_ARB);
|
---|
| 404 |
|
---|
| 405 | mGpuProgramManager->_pushSyntaxCode("arbvp1");
|
---|
| 406 | mGpuProgramManager->registerProgramFactory("arbvp1", createGLArbGpuProgram);
|
---|
| 407 | }
|
---|
| 408 |
|
---|
| 409 | if (mGLSupport->checkExtension("GL_NV_register_combiners2") &&
|
---|
| 410 | mGLSupport->checkExtension("GL_NV_texture_shader"))
|
---|
| 411 | {
|
---|
| 412 | mCapabilities->setCapability(RSC_FRAGMENT_PROGRAM);
|
---|
| 413 | mCapabilities->setMaxFragmentProgramVersion("fp20");
|
---|
| 414 |
|
---|
| 415 | mGpuProgramManager->_pushSyntaxCode("fp20");
|
---|
| 416 | mGpuProgramManager->registerProgramFactory("fp20", createGLGpuNvparseProgram);
|
---|
| 417 | }
|
---|
| 418 |
|
---|
| 419 |
|
---|
| 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");
|
---|
[115] | 543 | glSecondaryColor3fEXT_ptr =
|
---|
| 544 | (GL_SecondaryColor3fEXT_Func)mGLSupport->getProcAddress("glSecondaryColor3fEXT");
|
---|
[97] | 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");
|
---|
[115] | 624 |
|
---|
[97] | 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");
|
---|
[115] | 633 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 634 | glGetQueryivARB_ptr =
|
---|
| 635 | (GL_GetQueryivARB_Func)mGLSupport->getProcAddress("glGetQueryivARB");
|
---|
| 636 | glGetQueryObjectivARB_ptr =
|
---|
| 637 | (GL_GetQueryObjectivARB_Func)mGLSupport->getProcAddress("glGetQueryObjectivARB");
|
---|
[115] | 638 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
|
---|
[97] | 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;
|
---|
[115] | 1854 | mManualBlendColours[stage][0] = bm.colourArg1;
|
---|
[97] | 1855 |
|
---|
[115] | 1856 |
|
---|
[97] | 1857 | cv2[0] = bm.colourArg2.r;
|
---|
| 1858 | cv2[1] = bm.colourArg2.g;
|
---|
| 1859 | cv2[2] = bm.colourArg2.b;
|
---|
| 1860 | cv2[3] = bm.colourArg2.a;
|
---|
[115] | 1861 | mManualBlendColours[stage][1] = bm.colourArg2;
|
---|
[97] | 1862 | }
|
---|
| 1863 |
|
---|
| 1864 | if (bm.blendType == LBT_ALPHA)
|
---|
| 1865 | {
|
---|
[115] | 1866 | cv1[0] = mManualBlendColours[stage][0].r;
|
---|
| 1867 | cv1[1] = mManualBlendColours[stage][0].g;
|
---|
| 1868 | cv1[2] = mManualBlendColours[stage][0].b;
|
---|
[97] | 1869 | cv1[3] = bm.alphaArg1;
|
---|
| 1870 |
|
---|
[115] | 1871 | cv2[0] = mManualBlendColours[stage][1].r;
|
---|
| 1872 | cv2[1] = mManualBlendColours[stage][1].g;
|
---|
| 1873 | cv2[2] = mManualBlendColours[stage][1].b;
|
---|
[97] | 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);
|
---|
[115] | 2249 | glSecondaryColor3fEXT_ptr(0.0f, 0.0f, 0.0f);
|
---|
[97] | 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);
|
---|
[115] | 2538 | glEnable(GL_COLOR_SUM);
|
---|
| 2539 |
|
---|
[97] | 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 | }
|
---|