[1] | 1 | /* |
---|
| 2 | ----------------------------------------------------------------------------- |
---|
| 3 | This source file is part of OGRE |
---|
| 4 | (Object-oriented Graphics Rendering Engine) |
---|
| 5 | For the latest info, see http://www.ogre3d.org/ |
---|
| 6 | |
---|
| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
---|
| 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. |
---|
| 23 | |
---|
| 24 | You may alternatively use this source under the terms of a specific version of |
---|
| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
---|
| 26 | Torus Knot Software Ltd. |
---|
| 27 | ----------------------------------------------------------------------------- |
---|
| 28 | */ |
---|
| 29 | |
---|
| 30 | #include "OgreGLSLExtSupport.h" |
---|
| 31 | #include "OgreGLSLLinkProgram.h" |
---|
| 32 | #include "OgreStringConverter.h" |
---|
| 33 | #include "OgreGLSLGpuProgram.h" |
---|
| 34 | #include "OgreGLSLProgram.h" |
---|
| 35 | #include "OgreGLSLLinkProgramManager.h" |
---|
| 36 | |
---|
| 37 | namespace Ogre { |
---|
| 38 | |
---|
| 39 | //----------------------------------------------------------------------- |
---|
| 40 | #define NO_ATTRIB 0xFFFF |
---|
| 41 | GLSLLinkProgram::GLSLLinkProgram(GLSLGpuProgram* vertexProgram, GLSLGpuProgram* fragmentProgram) |
---|
| 42 | : mVertexProgram(vertexProgram) |
---|
| 43 | , mFragmentProgram(fragmentProgram) |
---|
| 44 | , mUniformRefsBuilt(false) |
---|
| 45 | , mLinked(false) |
---|
| 46 | , mTangentAttrib(NO_ATTRIB) |
---|
| 47 | , mBinormalAttrib(NO_ATTRIB) |
---|
| 48 | , mBlendIndicesAttrib(NO_ATTRIB) |
---|
| 49 | , mBlendWeightsAttrib(NO_ATTRIB) |
---|
| 50 | |
---|
| 51 | { |
---|
| 52 | checkForGLSLError( "GLSLLinkProgram::GLSLLinkProgram", "Error prior to Creating GLSL Program Object", 0 ); |
---|
| 53 | mGLHandle = glCreateProgramObjectARB(); |
---|
| 54 | checkForGLSLError( "GLSLLinkProgram::GLSLLinkProgram", "Error Creating GLSL Program Object", 0 ); |
---|
| 55 | |
---|
| 56 | |
---|
| 57 | // tell shaders to attach themselves to the LinkProgram |
---|
| 58 | // let the shaders do the attaching since they may have several children to attach |
---|
| 59 | if (mVertexProgram) |
---|
| 60 | { |
---|
| 61 | mVertexProgram->getGLSLProgram()->attachToProgramObject(mGLHandle); |
---|
| 62 | setSkeletalAnimationIncluded(mVertexProgram->isSkeletalAnimationIncluded()); |
---|
| 63 | } |
---|
| 64 | |
---|
| 65 | if (mFragmentProgram) |
---|
| 66 | { |
---|
| 67 | mFragmentProgram->getGLSLProgram()->attachToProgramObject(mGLHandle); |
---|
| 68 | } |
---|
| 69 | |
---|
| 70 | } |
---|
| 71 | |
---|
| 72 | //----------------------------------------------------------------------- |
---|
| 73 | GLSLLinkProgram::~GLSLLinkProgram(void) |
---|
| 74 | { |
---|
| 75 | glDeleteObjectARB(mGLHandle); |
---|
| 76 | |
---|
| 77 | } |
---|
| 78 | |
---|
| 79 | //----------------------------------------------------------------------- |
---|
| 80 | void GLSLLinkProgram::activate(void) |
---|
| 81 | { |
---|
| 82 | if (!mLinked) |
---|
| 83 | { |
---|
| 84 | glLinkProgramARB( mGLHandle ); |
---|
| 85 | glGetObjectParameterivARB( mGLHandle, GL_OBJECT_LINK_STATUS_ARB, &mLinked ); |
---|
| 86 | // force logging and raise exception if not linked |
---|
| 87 | checkForGLSLError( "GLSLLinkProgram::Activate", |
---|
| 88 | "Error linking GLSL Program Object", mGLHandle, !mLinked, !mLinked ); |
---|
| 89 | if(mLinked) |
---|
| 90 | { |
---|
| 91 | logObjectInfo( String("GLSL link result : "), mGLHandle ); |
---|
| 92 | buildGLUniformReferences(); |
---|
| 93 | extractAttributes(); |
---|
| 94 | } |
---|
| 95 | |
---|
| 96 | } |
---|
| 97 | |
---|
| 98 | if (mLinked) |
---|
| 99 | { |
---|
| 100 | glUseProgramObjectARB( mGLHandle ); |
---|
| 101 | } |
---|
| 102 | } |
---|
| 103 | |
---|
| 104 | //----------------------------------------------------------------------- |
---|
| 105 | void GLSLLinkProgram::extractAttributes(void) |
---|
| 106 | { |
---|
| 107 | GLint attrib = glGetAttribLocationARB(mGLHandle, "tangent"); |
---|
| 108 | mTangentAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
---|
| 109 | |
---|
| 110 | attrib = glGetAttribLocationARB(mGLHandle, "binormal"); |
---|
| 111 | mBinormalAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
---|
| 112 | |
---|
| 113 | attrib = glGetAttribLocationARB(mGLHandle, "blendIndices"); |
---|
| 114 | mBlendIndicesAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
---|
| 115 | |
---|
| 116 | attrib = glGetAttribLocationARB(mGLHandle, "blendWeights"); |
---|
| 117 | mBlendWeightsAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
---|
| 118 | |
---|
| 119 | } |
---|
| 120 | //----------------------------------------------------------------------- |
---|
| 121 | GLuint GLSLLinkProgram::getAttributeIndex(VertexElementSemantic semantic) |
---|
| 122 | { |
---|
| 123 | switch(semantic) |
---|
| 124 | { |
---|
| 125 | case VES_TANGENT: |
---|
| 126 | return mTangentAttrib; |
---|
| 127 | case VES_BINORMAL: |
---|
| 128 | return mBinormalAttrib; |
---|
| 129 | case VES_BLEND_WEIGHTS: |
---|
| 130 | return mBlendWeightsAttrib; |
---|
| 131 | case VES_BLEND_INDICES: |
---|
| 132 | return mBlendIndicesAttrib; |
---|
| 133 | default: |
---|
| 134 | assert(false && "Shouldn't be calling this with standard attribs!"); |
---|
| 135 | return 0; |
---|
| 136 | }; |
---|
| 137 | } |
---|
| 138 | //----------------------------------------------------------------------- |
---|
| 139 | bool GLSLLinkProgram::isAttributeValid(VertexElementSemantic semantic) |
---|
| 140 | { |
---|
| 141 | switch(semantic) |
---|
| 142 | { |
---|
| 143 | case VES_TANGENT: |
---|
| 144 | return mTangentAttrib != NO_ATTRIB; |
---|
| 145 | case VES_BINORMAL: |
---|
| 146 | return mBinormalAttrib != NO_ATTRIB; |
---|
| 147 | case VES_BLEND_WEIGHTS: |
---|
| 148 | return mBlendWeightsAttrib != NO_ATTRIB; |
---|
| 149 | case VES_BLEND_INDICES: |
---|
| 150 | return mBlendIndicesAttrib != NO_ATTRIB; |
---|
| 151 | default: |
---|
| 152 | return false; |
---|
| 153 | }; |
---|
| 154 | } |
---|
| 155 | //----------------------------------------------------------------------- |
---|
| 156 | void GLSLLinkProgram::buildGLUniformReferences(void) |
---|
| 157 | { |
---|
| 158 | if (!mUniformRefsBuilt) |
---|
| 159 | { |
---|
| 160 | const GpuConstantDefinitionMap* vertParams = 0; |
---|
| 161 | const GpuConstantDefinitionMap* fragParams = 0; |
---|
| 162 | |
---|
| 163 | if (mVertexProgram) |
---|
| 164 | { |
---|
| 165 | vertParams = &(mVertexProgram->getGLSLProgram()->getConstantDefinitions().map); |
---|
| 166 | } |
---|
| 167 | if (mFragmentProgram) |
---|
| 168 | { |
---|
| 169 | fragParams = &(mFragmentProgram->getGLSLProgram()->getConstantDefinitions().map); |
---|
| 170 | } |
---|
| 171 | |
---|
| 172 | GLSLLinkProgramManager::getSingleton().extractUniforms( |
---|
| 173 | mGLHandle, vertParams, fragParams, mGLUniformReferences); |
---|
| 174 | |
---|
| 175 | mUniformRefsBuilt = true; |
---|
| 176 | } |
---|
| 177 | } |
---|
| 178 | |
---|
| 179 | //----------------------------------------------------------------------- |
---|
| 180 | void GLSLLinkProgram::updateUniforms(GpuProgramParametersSharedPtr params, |
---|
| 181 | GpuProgramType fromProgType) |
---|
| 182 | { |
---|
| 183 | // iterate through uniform reference list and update uniform values |
---|
| 184 | GLUniformReferenceIterator currentUniform = mGLUniformReferences.begin(); |
---|
| 185 | GLUniformReferenceIterator endUniform = mGLUniformReferences.end(); |
---|
| 186 | |
---|
| 187 | for (;currentUniform != endUniform; ++currentUniform) |
---|
| 188 | { |
---|
| 189 | // Only pull values from buffer it's supposed to be in (vertex or fragment) |
---|
| 190 | // This method will be called twice, once for vertex program params, |
---|
| 191 | // and once for fragment program params. |
---|
| 192 | if (fromProgType == currentUniform->mSourceProgType) |
---|
| 193 | { |
---|
| 194 | const GpuConstantDefinition* def = currentUniform->mConstantDef; |
---|
| 195 | GLsizei glArraySize = (GLsizei)def->arraySize; |
---|
| 196 | |
---|
| 197 | // get the index in the parameter real list |
---|
| 198 | switch (def->constType) |
---|
| 199 | { |
---|
| 200 | case GCT_FLOAT1: |
---|
| 201 | glUniform1fvARB(currentUniform->mLocation, glArraySize, |
---|
| 202 | params->getFloatPointer(def->physicalIndex)); |
---|
| 203 | break; |
---|
| 204 | case GCT_FLOAT2: |
---|
| 205 | glUniform2fvARB(currentUniform->mLocation, glArraySize, |
---|
| 206 | params->getFloatPointer(def->physicalIndex)); |
---|
| 207 | break; |
---|
| 208 | case GCT_FLOAT3: |
---|
| 209 | glUniform3fvARB(currentUniform->mLocation, glArraySize, |
---|
| 210 | params->getFloatPointer(def->physicalIndex)); |
---|
| 211 | break; |
---|
| 212 | case GCT_FLOAT4: |
---|
| 213 | glUniform4fvARB(currentUniform->mLocation, glArraySize, |
---|
| 214 | params->getFloatPointer(def->physicalIndex)); |
---|
| 215 | break; |
---|
| 216 | case GCT_MATRIX_2X2: |
---|
| 217 | glUniformMatrix2fvARB(currentUniform->mLocation, glArraySize, |
---|
| 218 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 219 | break; |
---|
| 220 | case GCT_MATRIX_2X3: |
---|
| 221 | if (GLEW_VERSION_2_1) |
---|
| 222 | { |
---|
| 223 | glUniformMatrix2x3fv(currentUniform->mLocation, glArraySize, |
---|
| 224 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 225 | } |
---|
| 226 | break; |
---|
| 227 | case GCT_MATRIX_2X4: |
---|
| 228 | if (GLEW_VERSION_2_1) |
---|
| 229 | { |
---|
| 230 | glUniformMatrix2x4fv(currentUniform->mLocation, glArraySize, |
---|
| 231 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 232 | } |
---|
| 233 | break; |
---|
| 234 | case GCT_MATRIX_3X2: |
---|
| 235 | if (GLEW_VERSION_2_1) |
---|
| 236 | { |
---|
| 237 | glUniformMatrix3x2fv(currentUniform->mLocation, glArraySize, |
---|
| 238 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 239 | } |
---|
| 240 | break; |
---|
| 241 | case GCT_MATRIX_3X3: |
---|
| 242 | glUniformMatrix3fvARB(currentUniform->mLocation, glArraySize, |
---|
| 243 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 244 | break; |
---|
| 245 | case GCT_MATRIX_3X4: |
---|
| 246 | if (GLEW_VERSION_2_1) |
---|
| 247 | { |
---|
| 248 | glUniformMatrix3x4fv(currentUniform->mLocation, glArraySize, |
---|
| 249 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 250 | } |
---|
| 251 | break; |
---|
| 252 | case GCT_MATRIX_4X2: |
---|
| 253 | if (GLEW_VERSION_2_1) |
---|
| 254 | { |
---|
| 255 | glUniformMatrix4x2fv(currentUniform->mLocation, glArraySize, |
---|
| 256 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 257 | } |
---|
| 258 | break; |
---|
| 259 | case GCT_MATRIX_4X3: |
---|
| 260 | if (GLEW_VERSION_2_1) |
---|
| 261 | { |
---|
| 262 | glUniformMatrix4x3fv(currentUniform->mLocation, glArraySize, |
---|
| 263 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 264 | } |
---|
| 265 | break; |
---|
| 266 | case GCT_MATRIX_4X4: |
---|
| 267 | glUniformMatrix4fvARB(currentUniform->mLocation, glArraySize, |
---|
| 268 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
---|
| 269 | break; |
---|
| 270 | case GCT_INT1: |
---|
| 271 | glUniform1ivARB(currentUniform->mLocation, glArraySize, |
---|
| 272 | params->getIntPointer(def->physicalIndex)); |
---|
| 273 | break; |
---|
| 274 | case GCT_INT2: |
---|
| 275 | glUniform2ivARB(currentUniform->mLocation, glArraySize, |
---|
| 276 | params->getIntPointer(def->physicalIndex)); |
---|
| 277 | break; |
---|
| 278 | case GCT_INT3: |
---|
| 279 | glUniform3ivARB(currentUniform->mLocation, glArraySize, |
---|
| 280 | params->getIntPointer(def->physicalIndex)); |
---|
| 281 | break; |
---|
| 282 | case GCT_INT4: |
---|
| 283 | glUniform4ivARB(currentUniform->mLocation, glArraySize, |
---|
| 284 | params->getIntPointer(def->physicalIndex)); |
---|
| 285 | break; |
---|
| 286 | case GCT_SAMPLER1D: |
---|
| 287 | case GCT_SAMPLER1DSHADOW: |
---|
| 288 | case GCT_SAMPLER2D: |
---|
| 289 | case GCT_SAMPLER2DSHADOW: |
---|
| 290 | case GCT_SAMPLER3D: |
---|
| 291 | case GCT_SAMPLERCUBE: |
---|
| 292 | // samplers handled like 1-element ints |
---|
| 293 | glUniform1ivARB(currentUniform->mLocation, 1, |
---|
| 294 | params->getIntPointer(def->physicalIndex)); |
---|
| 295 | break; |
---|
| 296 | |
---|
| 297 | } // end switch |
---|
| 298 | #if OGRE_DEBUG_MODE |
---|
| 299 | checkForGLSLError( "GLSLLinkProgram::updateUniforms", "Error updating uniform", 0 ); |
---|
| 300 | #endif |
---|
| 301 | |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | } // end for |
---|
| 305 | } |
---|
| 306 | |
---|
| 307 | |
---|
| 308 | //----------------------------------------------------------------------- |
---|
| 309 | void GLSLLinkProgram::updatePassIterationUniforms(GpuProgramParametersSharedPtr params) |
---|
| 310 | { |
---|
| 311 | if (params->hasPassIterationNumber()) |
---|
| 312 | { |
---|
| 313 | size_t index = params->getPassIterationNumberIndex(); |
---|
| 314 | |
---|
| 315 | GLUniformReferenceIterator currentUniform = mGLUniformReferences.begin(); |
---|
| 316 | GLUniformReferenceIterator endUniform = mGLUniformReferences.end(); |
---|
| 317 | |
---|
| 318 | // need to find the uniform that matches the multi pass entry |
---|
| 319 | for (;currentUniform != endUniform; ++currentUniform) |
---|
| 320 | { |
---|
| 321 | // get the index in the parameter real list |
---|
| 322 | if (index == currentUniform->mConstantDef->physicalIndex) |
---|
| 323 | { |
---|
| 324 | glUniform1fvARB( currentUniform->mLocation, 1, params->getFloatPointer(index)); |
---|
| 325 | // there will only be one multipass entry |
---|
| 326 | return; |
---|
| 327 | } |
---|
| 328 | } |
---|
| 329 | } |
---|
| 330 | |
---|
| 331 | } |
---|
| 332 | } // namespace Ogre |
---|