static bool getSymbolInfo(ShHandle compiler, ANGLEShaderSymbolType symbolType, Vector<ANGLEShaderSymbol>& symbols)
{
switch (symbolType) {
case SHADER_SYMBOL_TYPE_UNIFORM: {
auto uniforms = ShGetUniforms(compiler);
if (!uniforms)
return false;
for (const auto& uniform : *uniforms)
getSymbolInfo(uniform, symbolType, symbols);
break;
}
case SHADER_SYMBOL_TYPE_VARYING: {
auto varyings = ShGetVaryings(compiler);
if (!varyings)
return false;
for (const auto& varying : *varyings)
getSymbolInfo(varying, symbolType, symbols);
break;
}
case SHADER_SYMBOL_TYPE_ATTRIBUTE: {
auto attributes = ShGetAttributes(compiler);
if (!attributes)
return false;
for (const auto& attribute : *attributes)
getSymbolInfo(attribute, symbolType, symbols);
break;
}
default:
ASSERT_NOT_REACHED();
return false;
}
return true;
}
void ShaderD3D::parseAttributes(ShHandle compiler)
{
const std::string &hlsl = getTranslatedSource();
if (!hlsl.empty())
{
mActiveAttributes = *GetShaderVariables(ShGetAttributes(compiler));
FilterInactiveVariables(&mActiveAttributes);
}
}
bool
ShaderValidator::FindAttribMappedNameByUserName(const std::string& userName,
const std::string** const out_mappedName) const
{
const std::vector<sh::Attribute>& attribs = *ShGetAttributes(mHandle);
for (auto itr = attribs.begin(); itr != attribs.end(); ++itr) {
if (itr->name == userName) {
*out_mappedName = &(itr->mappedName);
return true;
}
}
return false;
}
static void PrintActiveVariables(ShHandle compiler)
{
const std::vector<sh::Uniform> *uniforms = ShGetUniforms(compiler);
const std::vector<sh::Varying> *varyings = ShGetVaryings(compiler);
const std::vector<sh::Attribute> *attributes = ShGetAttributes(compiler);
for (size_t varCategory = 0; varCategory < 3; ++varCategory)
{
size_t numVars = 0;
std::string varCategoryName;
if (varCategory == 0)
{
numVars = uniforms->size();
varCategoryName = "uniform";
}
else if (varCategory == 1)
{
numVars = varyings->size();
varCategoryName = "varying";
}
else
{
numVars = attributes->size();
varCategoryName = "attribute";
}
for (size_t i = 0; i < numVars; ++i)
{
const sh::ShaderVariable *var;
if (varCategory == 0)
var = &((*uniforms)[i]);
else if (varCategory == 1)
var = &((*varyings)[i]);
else
var = &((*attributes)[i]);
PrintVariable(varCategoryName, i, *var);
}
printf("\n");
}
}
size_t
ShaderValidator::NumAttributes() const
{
return ShGetAttributes(mHandle)->size();
}
void Shader::compile(Compiler *compiler)
{
mData.mTranslatedSource.clear();
mInfoLog.clear();
mData.mShaderVersion = 100;
mData.mVaryings.clear();
mData.mUniforms.clear();
mData.mInterfaceBlocks.clear();
mData.mActiveAttributes.clear();
mData.mActiveOutputVariables.clear();
ShHandle compilerHandle = compiler->getCompilerHandle(mData.mShaderType);
std::stringstream sourceStream;
std::string sourcePath;
int additionalOptions =
mImplementation->prepareSourceAndReturnOptions(&sourceStream, &sourcePath);
int compileOptions = (SH_OBJECT_CODE | SH_VARIABLES | additionalOptions);
// Some targets (eg D3D11 Feature Level 9_3 and below) do not support non-constant loop indexes
// in fragment shaders. Shader compilation will fail. To provide a better error message we can
// instruct the compiler to pre-validate.
if (mRendererLimitations.shadersRequireIndexedLoopValidation)
{
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
}
std::string sourceString = sourceStream.str();
std::vector<const char *> sourceCStrings;
if (!sourcePath.empty())
{
sourceCStrings.push_back(sourcePath.c_str());
}
sourceCStrings.push_back(sourceString.c_str());
bool result =
ShCompile(compilerHandle, &sourceCStrings[0], sourceCStrings.size(), compileOptions);
if (!result)
{
mInfoLog = ShGetInfoLog(compilerHandle);
TRACE("\n%s", mInfoLog.c_str());
mCompiled = false;
return;
}
mData.mTranslatedSource = ShGetObjectCode(compilerHandle);
#ifndef NDEBUG
// Prefix translated shader with commented out un-translated shader.
// Useful in diagnostics tools which capture the shader source.
std::ostringstream shaderStream;
shaderStream << "// GLSL\n";
shaderStream << "//\n";
size_t curPos = 0;
while (curPos != std::string::npos)
{
size_t nextLine = mData.mSource.find("\n", curPos);
size_t len = (nextLine == std::string::npos) ? std::string::npos : (nextLine - curPos + 1);
shaderStream << "// " << mData.mSource.substr(curPos, len);
curPos = (nextLine == std::string::npos) ? std::string::npos : (nextLine + 1);
}
shaderStream << "\n\n";
shaderStream << mData.mTranslatedSource;
mData.mTranslatedSource = shaderStream.str();
#endif
// Gather the shader information
mData.mShaderVersion = ShGetShaderVersion(compilerHandle);
mData.mVaryings = GetShaderVariables(ShGetVaryings(compilerHandle));
mData.mUniforms = GetShaderVariables(ShGetUniforms(compilerHandle));
mData.mInterfaceBlocks = GetShaderVariables(ShGetInterfaceBlocks(compilerHandle));
if (mData.mShaderType == GL_VERTEX_SHADER)
{
mData.mActiveAttributes = GetActiveShaderVariables(ShGetAttributes(compilerHandle));
}
else
{
ASSERT(mData.mShaderType == GL_FRAGMENT_SHADER);
// TODO(jmadill): Figure out why we only sort in the FS, and if we need to.
std::sort(mData.mVaryings.begin(), mData.mVaryings.end(), CompareShaderVar);
mData.mActiveOutputVariables =
GetActiveShaderVariables(ShGetOutputVariables(compilerHandle));
}
ASSERT(!mData.mTranslatedSource.empty());
mCompiled = mImplementation->postTranslateCompile(compiler, &mInfoLog);
}