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) 2000-2005 The OGRE Team
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8 | Also see acknowledgements in Readme.html
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9 |
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10 | This program is free software you can redistribute it and/or modify it under
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11 | the terms of the GNU Lesser General Public License as published by the Free Software
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12 | Foundation either version 2 of the License, or (at your option) any later
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13 | version.
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14 |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT
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16 | ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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18 |
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19 | You should have received a copy of the GNU Lesser General Public License along with
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20 | this program if not, write to the Free Software Foundation, Inc., 59 Temple
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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22 | http://www.gnu.org/copyleft/lesser.txt.
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23 | -----------------------------------------------------------------------------
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24 | */
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25 | #include "OgreCgProgram.h"
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26 | #include "OgreGpuProgramManager.h"
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27 | #include "OgreStringConverter.h"
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28 | #include "OgreRoot.h"
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29 | #include "OgreRenderSystem.h"
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30 | #include "OgreRenderSystemCapabilities.h"
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31 | #include "OgreLogManager.h"
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32 |
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33 | namespace Ogre {
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34 | //-----------------------------------------------------------------------
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35 | CgProgram::CmdEntryPoint CgProgram::msCmdEntryPoint;
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36 | CgProgram::CmdProfiles CgProgram::msCmdProfiles;
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37 | CgProgram::CmdArgs CgProgram::msCmdArgs;
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38 | //-----------------------------------------------------------------------
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39 | void CgProgram::selectProfile(void)
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40 | {
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41 | mSelectedProfile = "";
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42 | mSelectedCgProfile = CG_PROFILE_UNKNOWN;
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43 |
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44 | StringVector::iterator i, iend;
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45 | iend = mProfiles.end();
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46 | GpuProgramManager& gpuMgr = GpuProgramManager::getSingleton();
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47 | for (i = mProfiles.begin(); i != iend; ++i)
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48 | {
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49 | if (gpuMgr.isSyntaxSupported(*i))
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50 | {
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51 | mSelectedProfile = *i;
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52 | mSelectedCgProfile = cgGetProfile(mSelectedProfile.c_str());
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53 | // Check for errors
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54 | checkForCgError("CgProgram::selectProfile",
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55 | "Unable to find CG profile enum for program " + mName + ": ", mCgContext);
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56 | break;
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57 | }
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58 | }
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59 | }
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60 | //-----------------------------------------------------------------------
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61 | void CgProgram::buildArgs(void)
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62 | {
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63 | StringVector args;
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64 | if (!mCompileArgs.empty())
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65 | args = StringUtil::split(mCompileArgs);
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66 |
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67 | StringVector::const_iterator i;
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68 | if (mSelectedCgProfile == CG_PROFILE_VS_1_1)
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69 | {
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70 | // Need the 'dcls' argument whenever we use this profile
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71 | // otherwise compilation of the assembler will fail
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72 | bool dclsFound = false;
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73 | for (i = args.begin(); i != args.end(); ++i)
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74 | {
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75 | if (*i == "dcls")
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76 | {
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77 | dclsFound = true;
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78 | break;
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79 | }
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80 | }
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81 | if (!dclsFound)
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82 | {
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83 | args.push_back("-profileopts");
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84 | args.push_back("dcls");
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85 | }
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86 | }
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87 | // Now split args into that god-awful char** that Cg insists on
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88 | freeCgArgs();
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89 | mCgArguments = new char*[args.size() + 1];
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90 | int index = 0;
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91 | for (i = args.begin(); i != args.end(); ++i, ++index)
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92 | {
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93 | mCgArguments[index] = new char[i->length() + 1];
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94 | strcpy(mCgArguments[index], i->c_str());
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95 | }
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96 | // Null terminate list
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97 | mCgArguments[index] = 0;
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98 |
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99 |
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100 | }
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101 | //-----------------------------------------------------------------------
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102 | void CgProgram::freeCgArgs(void)
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103 | {
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104 | if (mCgArguments)
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105 | {
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106 | size_t index = 0;
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107 | char* current = mCgArguments[index];
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108 | while (current)
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109 | {
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110 | delete [] current;
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111 | current = mCgArguments[++index];
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112 | }
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113 | delete [] mCgArguments;
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114 | mCgArguments = 0;
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115 | }
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116 | }
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117 | //-----------------------------------------------------------------------
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118 | void CgProgram::loadFromSource(void)
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119 | {
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120 | // Create Cg Program
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121 | selectProfile();
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122 | if (mSelectedCgProfile == CG_PROFILE_UNKNOWN)
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123 | {
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124 | LogManager::getSingleton().logMessage(
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125 | "Attempted to load Cg program '" + mName + "', but no suported "
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126 | "profile was found. ");
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127 | return;
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128 | }
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129 | buildArgs();
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130 | mCgProgram = cgCreateProgram(mCgContext, CG_SOURCE, mSource.c_str(),
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131 | mSelectedCgProfile, mEntryPoint.c_str(), const_cast<const char**>(mCgArguments));
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132 |
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133 | // Test
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134 | //LogManager::getSingleton().logMessage(cgGetProgramString(mCgProgram, CG_COMPILED_PROGRAM));
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135 |
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136 | // Check for errors
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137 | checkForCgError("CgProgram::loadFromSource",
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138 | "Unable to compile Cg program " + mName + ": ", mCgContext);
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139 |
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140 | }
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141 | //-----------------------------------------------------------------------
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142 | void CgProgram::createLowLevelImpl(void)
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143 | {
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144 | // ignore any previous error
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145 | if (mSelectedCgProfile != CG_PROFILE_UNKNOWN)
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146 | {
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147 |
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148 | // Create a low-level program, give it the same name as us
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149 | mAssemblerProgram =
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150 | GpuProgramManager::getSingleton().createProgramFromString(
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151 | mName,
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152 | mGroup,
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153 | cgGetProgramString(mCgProgram, CG_COMPILED_PROGRAM),
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154 | mType,
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155 | mSelectedProfile);
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156 | }
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157 | }
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158 | //-----------------------------------------------------------------------
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159 | void CgProgram::unloadHighLevelImpl(void)
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160 | {
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161 | // Unload Cg Program
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162 | // Lowlevel program will get unloaded elsewhere
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163 | if (mCgProgram)
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164 | {
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165 | cgDestroyProgram(mCgProgram);
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166 | checkForCgError("CgProgram::unloadImpl",
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167 | "Error while unloading Cg program " + mName + ": ",
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168 | mCgContext);
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169 | mCgProgram = 0;
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170 | }
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171 | }
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172 | //-----------------------------------------------------------------------
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173 | void CgProgram::populateParameterNames(GpuProgramParametersSharedPtr params)
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174 | {
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175 | // Derive parameter names from Cg
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176 | assert(mCgProgram && "Cg program not loaded!");
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177 | // Note use of 'leaf' format so we only get bottom-level params, not structs
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178 | CGparameter parameter = cgGetFirstLeafParameter(mCgProgram, CG_PROGRAM);
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179 | while (parameter != 0)
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180 | {
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181 | // Look for uniform (non-sampler) parameters only
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182 | // Don't bother enumerating unused parameters, especially since they will
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183 | // be optimised out and therefore not in the indexed versions
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184 | CGtype paramType = cgGetParameterType(parameter);
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185 |
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186 | // *** test
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187 | //String tempName = cgGetParameterName(parameter);
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188 | //size_t tempindex = cgGetParameterResourceIndex(parameter);
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189 | //LogManager::getSingleton().logMessage(
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190 | // tempName + " -> " + StringConverter::toString(tempindex));
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191 |
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192 | // *** end test
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193 |
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194 | if (cgGetParameterVariability(parameter) == CG_UNIFORM &&
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195 | paramType != CG_SAMPLER1D &&
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196 | paramType != CG_SAMPLER2D &&
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197 | paramType != CG_SAMPLER3D &&
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198 | paramType != CG_SAMPLERCUBE &&
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199 | paramType != CG_SAMPLERRECT &&
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200 | cgGetParameterDirection(parameter) != CG_OUT &&
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201 | cgIsParameterReferenced(parameter))
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202 | {
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203 | String paramName = cgGetParameterName(parameter);
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204 | size_t index = cgGetParameterResourceIndex(parameter);
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205 |
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206 | // Get the parameter resource, so we know what type we're dealing with
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207 | CGresource res = cgGetParameterResource(parameter);
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208 | switch (res)
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209 | {
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210 | case CG_COMBINER_STAGE_CONST0:
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211 | // register combiner, const 0
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212 | // the index relates to the texture stage; store this as (stage * 2) + 0
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213 | index = index * 2;
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214 | break;
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215 | case CG_COMBINER_STAGE_CONST1:
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216 | // register combiner, const 1
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217 | // the index relates to the texture stage; store this as (stage * 2) + 1
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218 | index = (index * 2) + 1;
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219 | break;
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220 | default:
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221 | // do nothing, normal constant
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222 | break;
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223 | };
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224 | params->_mapParameterNameToIndex(paramName, index);
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225 | // setup constant definition
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226 | // is it float or int
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227 | GpuProgramParameters::ElementType elementType = GpuProgramParameters::ET_INT;
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228 | // NOTE: all float enums are grouped together and occur before CG_INT which is the first of the int enums
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229 | // CG_FIXED1 is the last float type
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230 | if (paramType <= CG_FIXED1)
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231 | elementType = GpuProgramParameters::ET_REAL;
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232 | params->addConstantDefinition(paramName, index, 0, elementType);
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233 | }
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234 | // Get next
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235 | parameter = cgGetNextLeafParameter(parameter);
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236 | }
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237 |
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238 |
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239 | }
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240 | //-----------------------------------------------------------------------
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241 | CgProgram::CgProgram(ResourceManager* creator, const String& name,
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242 | ResourceHandle handle, const String& group, bool isManual,
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243 | ManualResourceLoader* loader, CGcontext context)
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244 | : HighLevelGpuProgram(creator, name, handle, group, isManual, loader),
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245 | mCgContext(context), mCgProgram(0),
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246 | mSelectedCgProfile(CG_PROFILE_UNKNOWN), mCgArguments(0)
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247 | {
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248 | if (createParamDictionary("CgProgram"))
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249 | {
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250 | setupBaseParamDictionary();
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251 |
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252 | ParamDictionary* dict = getParamDictionary();
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253 |
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254 | dict->addParameter(ParameterDef("entry_point",
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255 | "The entry point for the Cg program.",
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256 | PT_STRING),&msCmdEntryPoint);
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257 | dict->addParameter(ParameterDef("profiles",
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258 | "Space-separated list of Cg profiles supported by this profile.",
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259 | PT_STRING),&msCmdProfiles);
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260 | dict->addParameter(ParameterDef("compile_arguments",
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261 | "A string of compilation arguments to pass to the Cg compiler.",
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262 | PT_STRING),&msCmdArgs);
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263 | }
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264 |
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265 | }
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266 | //-----------------------------------------------------------------------
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267 | CgProgram::~CgProgram()
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268 | {
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269 | freeCgArgs();
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270 | // have to call this here reather than in Resource destructor
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271 | // since calling virtual methods in base destructors causes crash
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272 | if (mIsLoaded)
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273 | {
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274 | unload();
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275 | }
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276 | else
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277 | {
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278 | unloadHighLevel();
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279 | }
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280 | }
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281 | //-----------------------------------------------------------------------
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282 | bool CgProgram::isSupported(void) const
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283 | {
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284 | // If skeletal animation is being done, we need support for UBYTE4
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285 | if (isSkeletalAnimationIncluded() &&
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286 | !Root::getSingleton().getRenderSystem()->getCapabilities()
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287 | ->hasCapability(RSC_VERTEX_FORMAT_UBYTE4))
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288 | {
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289 | return false;
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290 | }
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291 |
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292 | StringVector::const_iterator i, iend;
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293 | iend = mProfiles.end();
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294 | // Check to see if any of the profiles are supported
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295 | for (i = mProfiles.begin(); i != iend; ++i)
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296 | {
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297 | if (GpuProgramManager::getSingleton().isSyntaxSupported(*i))
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298 | {
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299 | return true;
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300 | }
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301 | }
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302 | return false;
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303 |
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304 | }
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305 | //-----------------------------------------------------------------------
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306 | void CgProgram::setProfiles(const StringVector& profiles)
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307 | {
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308 | mProfiles.clear();
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309 | StringVector::const_iterator i, iend;
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310 | iend = profiles.end();
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311 | for (i = profiles.begin(); i != iend; ++i)
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312 | {
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313 | mProfiles.push_back(*i);
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314 | }
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315 | }
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316 |
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317 | //-----------------------------------------------------------------------
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318 | const String& CgProgram::getLanguage(void) const
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319 | {
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320 | static const String language = "cg";
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321 |
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322 | return language;
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323 | }
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324 |
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325 |
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326 | //-----------------------------------------------------------------------
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327 | //-----------------------------------------------------------------------
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328 | String CgProgram::CmdEntryPoint::doGet(const void *target) const
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329 | {
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330 | return static_cast<const CgProgram*>(target)->getEntryPoint();
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331 | }
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332 | void CgProgram::CmdEntryPoint::doSet(void *target, const String& val)
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333 | {
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334 | static_cast<CgProgram*>(target)->setEntryPoint(val);
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335 | }
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336 | //-----------------------------------------------------------------------
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337 | String CgProgram::CmdProfiles::doGet(const void *target) const
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338 | {
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339 | return StringConverter::toString(
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340 | static_cast<const CgProgram*>(target)->getProfiles() );
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341 | }
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342 | void CgProgram::CmdProfiles::doSet(void *target, const String& val)
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343 | {
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344 | static_cast<CgProgram*>(target)->setProfiles(StringUtil::split(val));
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345 | }
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346 | //-----------------------------------------------------------------------
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347 | String CgProgram::CmdArgs::doGet(const void *target) const
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348 | {
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349 | return static_cast<const CgProgram*>(target)->getCompileArguments();
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350 | }
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351 | void CgProgram::CmdArgs::doSet(void *target, const String& val)
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352 | {
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353 | static_cast<CgProgram*>(target)->setCompileArguments(val);
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354 | }
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355 |
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356 | }
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