1 | /* |
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2 | ----------------------------------------------------------------------------- |
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3 | This source file is part of OGRE |
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4 | (Object-oriented Graphics Rendering Engine) |
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5 | For the latest info, see http://www.ogre3d.org/ |
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6 | |
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7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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8 | Also see acknowledgements in Readme.html |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify it under |
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11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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12 | Foundation; either version 2 of the License, or (at your option) any later |
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13 | version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU Lesser General Public License along with |
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20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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22 | http://www.gnu.org/copyleft/lesser.txt. |
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23 | |
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24 | You may alternatively use this source under the terms of a specific version of |
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25 | the OGRE Unrestricted License provided you have obtained such a license from |
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26 | Torus Knot Software Ltd. |
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27 | ----------------------------------------------------------------------------- |
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28 | */ |
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29 | |
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30 | #include "OgreGLSLExtSupport.h" |
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31 | #include "OgreGLSLLinkProgram.h" |
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32 | #include "OgreStringConverter.h" |
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33 | #include "OgreGLSLGpuProgram.h" |
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34 | #include "OgreGLSLProgram.h" |
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35 | #include "OgreGLSLLinkProgramManager.h" |
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36 | |
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37 | namespace Ogre { |
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38 | |
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39 | //----------------------------------------------------------------------- |
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40 | #define NO_ATTRIB 0xFFFF |
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41 | GLSLLinkProgram::GLSLLinkProgram(GLSLGpuProgram* vertexProgram, GLSLGpuProgram* fragmentProgram) |
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42 | : mVertexProgram(vertexProgram) |
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43 | , mFragmentProgram(fragmentProgram) |
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44 | , mUniformRefsBuilt(false) |
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45 | , mLinked(false) |
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46 | , mTangentAttrib(NO_ATTRIB) |
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47 | , mBinormalAttrib(NO_ATTRIB) |
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48 | , mBlendIndicesAttrib(NO_ATTRIB) |
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49 | , mBlendWeightsAttrib(NO_ATTRIB) |
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50 | |
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51 | { |
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52 | checkForGLSLError( "GLSLLinkProgram::GLSLLinkProgram", "Error prior to Creating GLSL Program Object", 0 ); |
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53 | mGLHandle = glCreateProgramObjectARB(); |
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54 | checkForGLSLError( "GLSLLinkProgram::GLSLLinkProgram", "Error Creating GLSL Program Object", 0 ); |
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55 | |
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56 | |
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57 | // tell shaders to attach themselves to the LinkProgram |
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58 | // let the shaders do the attaching since they may have several children to attach |
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59 | if (mVertexProgram) |
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60 | { |
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61 | mVertexProgram->getGLSLProgram()->attachToProgramObject(mGLHandle); |
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62 | setSkeletalAnimationIncluded(mVertexProgram->isSkeletalAnimationIncluded()); |
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63 | } |
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64 | |
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65 | if (mFragmentProgram) |
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66 | { |
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67 | mFragmentProgram->getGLSLProgram()->attachToProgramObject(mGLHandle); |
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68 | } |
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69 | |
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70 | } |
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71 | |
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72 | //----------------------------------------------------------------------- |
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73 | GLSLLinkProgram::~GLSLLinkProgram(void) |
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74 | { |
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75 | glDeleteObjectARB(mGLHandle); |
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76 | |
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77 | } |
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78 | |
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79 | //----------------------------------------------------------------------- |
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80 | void GLSLLinkProgram::activate(void) |
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81 | { |
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82 | if (!mLinked) |
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83 | { |
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84 | glLinkProgramARB( mGLHandle ); |
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85 | glGetObjectParameterivARB( mGLHandle, GL_OBJECT_LINK_STATUS_ARB, &mLinked ); |
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86 | // force logging and raise exception if not linked |
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87 | checkForGLSLError( "GLSLLinkProgram::Activate", |
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88 | "Error linking GLSL Program Object", mGLHandle, !mLinked, !mLinked ); |
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89 | if(mLinked) |
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90 | { |
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91 | logObjectInfo( String("GLSL link result : "), mGLHandle ); |
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92 | buildGLUniformReferences(); |
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93 | extractAttributes(); |
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94 | } |
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95 | |
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96 | } |
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97 | |
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98 | if (mLinked) |
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99 | { |
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100 | glUseProgramObjectARB( mGLHandle ); |
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101 | } |
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102 | } |
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103 | |
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104 | //----------------------------------------------------------------------- |
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105 | void GLSLLinkProgram::extractAttributes(void) |
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106 | { |
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107 | GLint attrib = glGetAttribLocationARB(mGLHandle, "tangent"); |
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108 | mTangentAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
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109 | |
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110 | attrib = glGetAttribLocationARB(mGLHandle, "binormal"); |
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111 | mBinormalAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
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112 | |
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113 | attrib = glGetAttribLocationARB(mGLHandle, "blendIndices"); |
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114 | mBlendIndicesAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
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115 | |
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116 | attrib = glGetAttribLocationARB(mGLHandle, "blendWeights"); |
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117 | mBlendWeightsAttrib = (attrib == -1)? NO_ATTRIB : (GLuint)attrib; |
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118 | |
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119 | } |
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120 | //----------------------------------------------------------------------- |
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121 | GLuint GLSLLinkProgram::getAttributeIndex(VertexElementSemantic semantic) |
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122 | { |
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123 | switch(semantic) |
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124 | { |
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125 | case VES_TANGENT: |
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126 | return mTangentAttrib; |
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127 | case VES_BINORMAL: |
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128 | return mBinormalAttrib; |
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129 | case VES_BLEND_WEIGHTS: |
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130 | return mBlendWeightsAttrib; |
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131 | case VES_BLEND_INDICES: |
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132 | return mBlendIndicesAttrib; |
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133 | default: |
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134 | assert(false && "Shouldn't be calling this with standard attribs!"); |
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135 | return 0; |
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136 | }; |
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137 | } |
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138 | //----------------------------------------------------------------------- |
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139 | bool GLSLLinkProgram::isAttributeValid(VertexElementSemantic semantic) |
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140 | { |
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141 | switch(semantic) |
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142 | { |
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143 | case VES_TANGENT: |
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144 | return mTangentAttrib != NO_ATTRIB; |
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145 | case VES_BINORMAL: |
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146 | return mBinormalAttrib != NO_ATTRIB; |
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147 | case VES_BLEND_WEIGHTS: |
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148 | return mBlendWeightsAttrib != NO_ATTRIB; |
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149 | case VES_BLEND_INDICES: |
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150 | return mBlendIndicesAttrib != NO_ATTRIB; |
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151 | default: |
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152 | return false; |
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153 | }; |
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154 | } |
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155 | //----------------------------------------------------------------------- |
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156 | void GLSLLinkProgram::buildGLUniformReferences(void) |
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157 | { |
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158 | if (!mUniformRefsBuilt) |
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159 | { |
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160 | const GpuConstantDefinitionMap* vertParams = 0; |
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161 | const GpuConstantDefinitionMap* fragParams = 0; |
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162 | |
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163 | if (mVertexProgram) |
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164 | { |
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165 | vertParams = &(mVertexProgram->getGLSLProgram()->getConstantDefinitions().map); |
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166 | } |
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167 | if (mFragmentProgram) |
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168 | { |
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169 | fragParams = &(mFragmentProgram->getGLSLProgram()->getConstantDefinitions().map); |
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170 | } |
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171 | |
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172 | GLSLLinkProgramManager::getSingleton().extractUniforms( |
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173 | mGLHandle, vertParams, fragParams, mGLUniformReferences); |
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174 | |
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175 | mUniformRefsBuilt = true; |
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176 | } |
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177 | } |
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178 | |
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179 | //----------------------------------------------------------------------- |
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180 | void GLSLLinkProgram::updateUniforms(GpuProgramParametersSharedPtr params, |
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181 | GpuProgramType fromProgType) |
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182 | { |
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183 | // iterate through uniform reference list and update uniform values |
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184 | GLUniformReferenceIterator currentUniform = mGLUniformReferences.begin(); |
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185 | GLUniformReferenceIterator endUniform = mGLUniformReferences.end(); |
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186 | |
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187 | for (;currentUniform != endUniform; ++currentUniform) |
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188 | { |
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189 | // Only pull values from buffer it's supposed to be in (vertex or fragment) |
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190 | // This method will be called twice, once for vertex program params, |
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191 | // and once for fragment program params. |
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192 | if (fromProgType == currentUniform->mSourceProgType) |
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193 | { |
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194 | const GpuConstantDefinition* def = currentUniform->mConstantDef; |
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195 | GLsizei glArraySize = (GLsizei)def->arraySize; |
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196 | |
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197 | // get the index in the parameter real list |
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198 | switch (def->constType) |
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199 | { |
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200 | case GCT_FLOAT1: |
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201 | glUniform1fvARB(currentUniform->mLocation, glArraySize, |
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202 | params->getFloatPointer(def->physicalIndex)); |
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203 | break; |
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204 | case GCT_FLOAT2: |
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205 | glUniform2fvARB(currentUniform->mLocation, glArraySize, |
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206 | params->getFloatPointer(def->physicalIndex)); |
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207 | break; |
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208 | case GCT_FLOAT3: |
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209 | glUniform3fvARB(currentUniform->mLocation, glArraySize, |
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210 | params->getFloatPointer(def->physicalIndex)); |
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211 | break; |
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212 | case GCT_FLOAT4: |
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213 | glUniform4fvARB(currentUniform->mLocation, glArraySize, |
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214 | params->getFloatPointer(def->physicalIndex)); |
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215 | break; |
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216 | case GCT_MATRIX_2X2: |
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217 | glUniformMatrix2fvARB(currentUniform->mLocation, glArraySize, |
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218 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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219 | break; |
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220 | case GCT_MATRIX_2X3: |
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221 | if (GLEW_VERSION_2_1) |
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222 | { |
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223 | glUniformMatrix2x3fv(currentUniform->mLocation, glArraySize, |
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224 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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225 | } |
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226 | break; |
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227 | case GCT_MATRIX_2X4: |
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228 | if (GLEW_VERSION_2_1) |
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229 | { |
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230 | glUniformMatrix2x4fv(currentUniform->mLocation, glArraySize, |
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231 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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232 | } |
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233 | break; |
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234 | case GCT_MATRIX_3X2: |
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235 | if (GLEW_VERSION_2_1) |
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236 | { |
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237 | glUniformMatrix3x2fv(currentUniform->mLocation, glArraySize, |
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238 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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239 | } |
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240 | break; |
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241 | case GCT_MATRIX_3X3: |
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242 | glUniformMatrix3fvARB(currentUniform->mLocation, glArraySize, |
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243 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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244 | break; |
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245 | case GCT_MATRIX_3X4: |
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246 | if (GLEW_VERSION_2_1) |
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247 | { |
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248 | glUniformMatrix3x4fv(currentUniform->mLocation, glArraySize, |
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249 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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250 | } |
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251 | break; |
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252 | case GCT_MATRIX_4X2: |
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253 | if (GLEW_VERSION_2_1) |
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254 | { |
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255 | glUniformMatrix4x2fv(currentUniform->mLocation, glArraySize, |
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256 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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257 | } |
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258 | break; |
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259 | case GCT_MATRIX_4X3: |
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260 | if (GLEW_VERSION_2_1) |
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261 | { |
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262 | glUniformMatrix4x3fv(currentUniform->mLocation, glArraySize, |
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263 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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264 | } |
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265 | break; |
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266 | case GCT_MATRIX_4X4: |
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267 | glUniformMatrix4fvARB(currentUniform->mLocation, glArraySize, |
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268 | GL_TRUE, params->getFloatPointer(def->physicalIndex)); |
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269 | break; |
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270 | case GCT_INT1: |
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271 | glUniform1ivARB(currentUniform->mLocation, glArraySize, |
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272 | params->getIntPointer(def->physicalIndex)); |
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273 | break; |
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274 | case GCT_INT2: |
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275 | glUniform2ivARB(currentUniform->mLocation, glArraySize, |
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276 | params->getIntPointer(def->physicalIndex)); |
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277 | break; |
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278 | case GCT_INT3: |
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279 | glUniform3ivARB(currentUniform->mLocation, glArraySize, |
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280 | params->getIntPointer(def->physicalIndex)); |
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281 | break; |
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282 | case GCT_INT4: |
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283 | glUniform4ivARB(currentUniform->mLocation, glArraySize, |
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284 | params->getIntPointer(def->physicalIndex)); |
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285 | break; |
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286 | case GCT_SAMPLER1D: |
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287 | case GCT_SAMPLER1DSHADOW: |
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288 | case GCT_SAMPLER2D: |
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289 | case GCT_SAMPLER2DSHADOW: |
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290 | case GCT_SAMPLER3D: |
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291 | case GCT_SAMPLERCUBE: |
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292 | // samplers handled like 1-element ints |
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293 | glUniform1ivARB(currentUniform->mLocation, 1, |
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294 | params->getIntPointer(def->physicalIndex)); |
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295 | break; |
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296 | |
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297 | } // end switch |
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298 | #if OGRE_DEBUG_MODE |
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299 | checkForGLSLError( "GLSLLinkProgram::updateUniforms", "Error updating uniform", 0 ); |
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300 | #endif |
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301 | |
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302 | } |
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303 | |
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304 | } // end for |
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305 | } |
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306 | |
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307 | |
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308 | //----------------------------------------------------------------------- |
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309 | void GLSLLinkProgram::updatePassIterationUniforms(GpuProgramParametersSharedPtr params) |
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310 | { |
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311 | if (params->hasPassIterationNumber()) |
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312 | { |
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313 | size_t index = params->getPassIterationNumberIndex(); |
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314 | |
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315 | GLUniformReferenceIterator currentUniform = mGLUniformReferences.begin(); |
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316 | GLUniformReferenceIterator endUniform = mGLUniformReferences.end(); |
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317 | |
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318 | // need to find the uniform that matches the multi pass entry |
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319 | for (;currentUniform != endUniform; ++currentUniform) |
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320 | { |
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321 | // get the index in the parameter real list |
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322 | if (index == currentUniform->mConstantDef->physicalIndex) |
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323 | { |
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324 | glUniform1fvARB( currentUniform->mLocation, 1, params->getFloatPointer(index)); |
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325 | // there will only be one multipass entry |
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326 | return; |
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327 | } |
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328 | } |
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329 | } |
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330 | |
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331 | } |
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332 | } // namespace Ogre |
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