TIntermNode *TCompiler::compileTreeImpl(const char *const shaderStrings[],
size_t numStrings,
const int compileOptions)
{
clearResults();
ASSERT(numStrings > 0);
ASSERT(GetGlobalPoolAllocator());
// Reset the extension behavior for each compilation unit.
ResetExtensionBehavior(extensionBehavior);
// First string is path of source file if flag is set. The actual source follows.
size_t firstSource = 0;
if (compileOptions & SH_SOURCE_PATH)
{
mSourcePath = shaderStrings[0];
++firstSource;
}
TIntermediate intermediate(infoSink);
TParseContext parseContext(symbolTable, extensionBehavior, intermediate, shaderType, shaderSpec,
compileOptions, true, infoSink, getResources());
parseContext.setFragmentPrecisionHighOnESSL1(fragmentPrecisionHigh);
SetGlobalParseContext(&parseContext);
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
TScopedSymbolTableLevel scopedSymbolLevel(&symbolTable);
// Parse shader.
bool success =
(PaParseStrings(numStrings - firstSource, &shaderStrings[firstSource], nullptr, &parseContext) == 0) &&
(parseContext.getTreeRoot() != nullptr);
shaderVersion = parseContext.getShaderVersion();
if (success && MapSpecToShaderVersion(shaderSpec) < shaderVersion)
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "unsupported shader version";
success = false;
}
TIntermNode *root = nullptr;
if (success)
{
mPragma = parseContext.pragma();
if (mPragma.stdgl.invariantAll)
{
symbolTable.setGlobalInvariant();
}
root = parseContext.getTreeRoot();
root = intermediate.postProcess(root);
// Highp might have been auto-enabled based on shader version
fragmentPrecisionHigh = parseContext.getFragmentPrecisionHigh();
// Disallow expressions deemed too complex.
if (success && (compileOptions & SH_LIMIT_EXPRESSION_COMPLEXITY))
success = limitExpressionComplexity(root);
// Create the function DAG and check there is no recursion
if (success)
success = initCallDag(root);
if (success && (compileOptions & SH_LIMIT_CALL_STACK_DEPTH))
success = checkCallDepth();
// Checks which functions are used and if "main" exists
if (success)
{
functionMetadata.clear();
functionMetadata.resize(mCallDag.size());
success = tagUsedFunctions();
}
if (success && !(compileOptions & SH_DONT_PRUNE_UNUSED_FUNCTIONS))
success = pruneUnusedFunctions(root);
// Prune empty declarations to work around driver bugs and to keep declaration output simple.
if (success)
PruneEmptyDeclarations(root);
if (success && shaderVersion == 300 && shaderType == GL_FRAGMENT_SHADER)
success = validateOutputs(root);
if (success && shouldRunLoopAndIndexingValidation(compileOptions))
success = validateLimitations(root);
if (success && (compileOptions & SH_TIMING_RESTRICTIONS))
success = enforceTimingRestrictions(root, (compileOptions & SH_DEPENDENCY_GRAPH) != 0);
if (success && shaderSpec == SH_CSS_SHADERS_SPEC)
rewriteCSSShader(root);
// Unroll for-loop markup needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_INTEGER_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kIntegerIndex,
shouldRunLoopAndIndexingValidation(compileOptions));
root->traverse(&marker);
}
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_SAMPLER_ARRAY_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kSamplerArrayIndex,
shouldRunLoopAndIndexingValidation(compileOptions));
root->traverse(&marker);
if (marker.samplerArrayIndexIsFloatLoopIndex())
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "sampler array index is float loop index";
success = false;
}
}
// Built-in function emulation needs to happen after validateLimitations pass.
if (success)
{
initBuiltInFunctionEmulator(&builtInFunctionEmulator, compileOptions);
builtInFunctionEmulator.MarkBuiltInFunctionsForEmulation(root);
}
// Clamping uniform array bounds needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_CLAMP_INDIRECT_ARRAY_BOUNDS))
arrayBoundsClamper.MarkIndirectArrayBoundsForClamping(root);
// gl_Position is always written in compatibility output mode
if (success && shaderType == GL_VERTEX_SHADER &&
((compileOptions & SH_INIT_GL_POSITION) ||
(outputType == SH_GLSL_COMPATIBILITY_OUTPUT)))
initializeGLPosition(root);
// This pass might emit short circuits so keep it before the short circuit unfolding
if (success && (compileOptions & SH_REWRITE_DO_WHILE_LOOPS))
RewriteDoWhile(root, getTemporaryIndex());
if (success && (compileOptions & SH_UNFOLD_SHORT_CIRCUIT))
{
UnfoldShortCircuitAST unfoldShortCircuit;
root->traverse(&unfoldShortCircuit);
unfoldShortCircuit.updateTree();
}
if (success && (compileOptions & SH_REMOVE_POW_WITH_CONSTANT_EXPONENT))
{
RemovePow(root);
}
if (success && shouldCollectVariables(compileOptions))
{
collectVariables(root);
if (compileOptions & SH_ENFORCE_PACKING_RESTRICTIONS)
{
success = enforcePackingRestrictions();
if (!success)
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "too many uniforms";
}
}
if (success && shaderType == GL_VERTEX_SHADER &&
(compileOptions & SH_INIT_VARYINGS_WITHOUT_STATIC_USE))
initializeVaryingsWithoutStaticUse(root);
}
if (success && (compileOptions & SH_SCALARIZE_VEC_AND_MAT_CONSTRUCTOR_ARGS))
{
ScalarizeVecAndMatConstructorArgs scalarizer(
shaderType, fragmentPrecisionHigh);
root->traverse(&scalarizer);
}
if (success && (compileOptions & SH_REGENERATE_STRUCT_NAMES))
{
RegenerateStructNames gen(symbolTable, shaderVersion);
root->traverse(&gen);
}
}
SetGlobalParseContext(NULL);
if (success)
return root;
return NULL;
}
void TranslatorGLSL::translate(TIntermNode *root, int compileOptions)
{
TInfoSinkBase& sink = getInfoSink().obj;
// Write GLSL version.
writeVersion(root);
// Write extension behaviour as needed
writeExtensionBehavior(root);
// Write pragmas after extensions because some drivers consider pragmas
// like non-preprocessor tokens.
writePragma(compileOptions);
// If flattening the global invariant pragma, write invariant declarations for built-in
// variables. It should be harmless to do this twice in the case that the shader also explicitly
// did this. However, it's important to emit invariant qualifiers only for those built-in
// variables that are actually used, to avoid affecting the behavior of the shader.
if ((compileOptions & SH_FLATTEN_PRAGMA_STDGL_INVARIANT_ALL) && getPragma().stdgl.invariantAll)
{
collectVariables(root);
switch (getShaderType())
{
case GL_VERTEX_SHADER:
sink << "invariant gl_Position;\n";
// gl_PointSize should be declared invariant in both ESSL 1.00 and 3.00 fragment
// shaders if it's statically referenced.
conditionallyOutputInvariantDeclaration("gl_PointSize");
break;
case GL_FRAGMENT_SHADER:
// The preprocessor will reject this pragma if it's used in ESSL 3.00 fragment
// shaders, so we can use simple logic to determine whether to declare these
// variables invariant.
conditionallyOutputInvariantDeclaration("gl_FragCoord");
conditionallyOutputInvariantDeclaration("gl_PointCoord");
break;
default:
// Currently not reached, but leave this in for future expansion.
ASSERT(false);
break;
}
}
bool precisionEmulation = getResources().WEBGL_debug_shader_precision && getPragma().debugShaderPrecision;
if (precisionEmulation)
{
EmulatePrecision emulatePrecision(getSymbolTable(), getShaderVersion());
root->traverse(&emulatePrecision);
emulatePrecision.updateTree();
emulatePrecision.writeEmulationHelpers(sink, getShaderVersion(), getOutputType());
}
// Write emulated built-in functions if needed.
if (!getBuiltInFunctionEmulator().IsOutputEmpty())
{
sink << "// BEGIN: Generated code for built-in function emulation\n\n";
sink << "#define webgl_emu_precision\n\n";
getBuiltInFunctionEmulator().OutputEmulatedFunctions(sink);
sink << "// END: Generated code for built-in function emulation\n\n";
}
// Write array bounds clamping emulation if needed.
getArrayBoundsClamper().OutputClampingFunctionDefinition(sink);
// Declare gl_FragColor and glFragData as webgl_FragColor and webgl_FragData
// if it's core profile shaders and they are used.
if (getShaderType() == GL_FRAGMENT_SHADER)
{
const bool mayHaveESSL1SecondaryOutputs =
IsExtensionEnabled(getExtensionBehavior(), "GL_EXT_blend_func_extended") &&
getShaderVersion() == 100;
const bool declareGLFragmentOutputs = IsGLSL130OrNewer(getOutputType());
bool hasGLFragColor = false;
bool hasGLFragData = false;
bool hasGLSecondaryFragColor = false;
bool hasGLSecondaryFragData = false;
for (const auto &outputVar : outputVariables)
{
if (declareGLFragmentOutputs)
{
if (outputVar.name == "gl_FragColor")
{
ASSERT(!hasGLFragColor);
hasGLFragColor = true;
continue;
}
else if (outputVar.name == "gl_FragData")
{
ASSERT(!hasGLFragData);
hasGLFragData = true;
continue;
}
}
if (mayHaveESSL1SecondaryOutputs)
{
if (outputVar.name == "gl_SecondaryFragColorEXT")
{
ASSERT(!hasGLSecondaryFragColor);
hasGLSecondaryFragColor = true;
continue;
}
else if (outputVar.name == "gl_SecondaryFragDataEXT")
{
ASSERT(!hasGLSecondaryFragData);
hasGLSecondaryFragData = true;
continue;
}
}
}
ASSERT(!((hasGLFragColor || hasGLSecondaryFragColor) &&
(hasGLFragData || hasGLSecondaryFragData)));
if (hasGLFragColor)
{
sink << "out vec4 webgl_FragColor;\n";
}
if (hasGLFragData)
{
sink << "out vec4 webgl_FragData[gl_MaxDrawBuffers];\n";
}
if (hasGLSecondaryFragColor)
{
sink << "out vec4 angle_SecondaryFragColor;\n";
}
if (hasGLSecondaryFragData)
{
sink << "out vec4 angle_SecondaryFragData[" << getResources().MaxDualSourceDrawBuffers
<< "];\n";
}
}
if (getShaderType() == GL_COMPUTE_SHADER && isComputeShaderLocalSizeDeclared())
{
const sh::WorkGroupSize &localSize = getComputeShaderLocalSize();
sink << "layout (local_size_x=" << localSize[0] << ", local_size_y=" << localSize[1]
<< ", local_size_z=" << localSize[2] << ") in;\n";
}
// Write translated shader.
TOutputGLSL outputGLSL(sink,
getArrayIndexClampingStrategy(),
getHashFunction(),
getNameMap(),
getSymbolTable(),
getShaderVersion(),
getOutputType());
root->traverse(&outputGLSL);
}
bool TCompiler::compile(const char* const shaderStrings[],
size_t numStrings,
int compileOptions)
{
TScopedPoolAllocator scopedAlloc(&allocator);
clearResults();
if (numStrings == 0)
return true;
// If compiling for WebGL, validate loop and indexing as well.
if (IsWebGLBasedSpec(shaderSpec))
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
// First string is path of source file if flag is set. The actual source follows.
const char* sourcePath = NULL;
size_t firstSource = 0;
if (compileOptions & SH_SOURCE_PATH)
{
sourcePath = shaderStrings[0];
++firstSource;
}
TIntermediate intermediate(infoSink);
TParseContext parseContext(symbolTable, extensionBehavior, intermediate,
shaderType, shaderSpec, compileOptions, true,
sourcePath, infoSink);
parseContext.fragmentPrecisionHigh = fragmentPrecisionHigh;
SetGlobalParseContext(&parseContext);
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
TScopedSymbolTableLevel scopedSymbolLevel(&symbolTable);
// Parse shader.
bool success =
(PaParseStrings(numStrings - firstSource, &shaderStrings[firstSource], NULL, &parseContext) == 0) &&
(parseContext.treeRoot != NULL);
shaderVersion = parseContext.getShaderVersion();
if (success)
{
TIntermNode* root = parseContext.treeRoot;
success = intermediate.postProcess(root);
// Disallow expressions deemed too complex.
if (success && (compileOptions & SH_LIMIT_EXPRESSION_COMPLEXITY))
success = limitExpressionComplexity(root);
if (success)
success = detectCallDepth(root, infoSink, (compileOptions & SH_LIMIT_CALL_STACK_DEPTH) != 0);
if (success && shaderVersion == 300 && shaderType == GL_FRAGMENT_SHADER)
success = validateOutputs(root);
if (success && (compileOptions & SH_VALIDATE_LOOP_INDEXING))
success = validateLimitations(root);
if (success && (compileOptions & SH_TIMING_RESTRICTIONS))
success = enforceTimingRestrictions(root, (compileOptions & SH_DEPENDENCY_GRAPH) != 0);
if (success && shaderSpec == SH_CSS_SHADERS_SPEC)
rewriteCSSShader(root);
// Unroll for-loop markup needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_INTEGER_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kIntegerIndex);
root->traverse(&marker);
}
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_SAMPLER_ARRAY_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kSamplerArrayIndex);
root->traverse(&marker);
if (marker.samplerArrayIndexIsFloatLoopIndex())
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "sampler array index is float loop index";
success = false;
}
}
// Built-in function emulation needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_EMULATE_BUILT_IN_FUNCTIONS))
builtInFunctionEmulator.MarkBuiltInFunctionsForEmulation(root);
// Clamping uniform array bounds needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_CLAMP_INDIRECT_ARRAY_BOUNDS))
arrayBoundsClamper.MarkIndirectArrayBoundsForClamping(root);
if (success && shaderType == GL_VERTEX_SHADER && (compileOptions & SH_INIT_GL_POSITION))
initializeGLPosition(root);
if (success && (compileOptions & SH_UNFOLD_SHORT_CIRCUIT))
{
UnfoldShortCircuitAST unfoldShortCircuit;
root->traverse(&unfoldShortCircuit);
unfoldShortCircuit.updateTree();
}
if (success && (compileOptions & SH_VARIABLES))
{
collectVariables(root);
if (compileOptions & SH_ENFORCE_PACKING_RESTRICTIONS)
{
success = enforcePackingRestrictions();
if (!success)
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "too many uniforms";
}
}
if (success && shaderType == GL_VERTEX_SHADER &&
(compileOptions & SH_INIT_VARYINGS_WITHOUT_STATIC_USE))
initializeVaryingsWithoutStaticUse(root);
}
if (success && (compileOptions & SH_INTERMEDIATE_TREE))
intermediate.outputTree(root);
if (success && (compileOptions & SH_OBJECT_CODE))
translate(root);
}
// Cleanup memory.
intermediate.remove(parseContext.treeRoot);
SetGlobalParseContext(NULL);
return success;
}
TIntermNode *TCompiler::compileTreeImpl(const char* const shaderStrings[],
size_t numStrings, int compileOptions)
{
clearResults();
ASSERT(numStrings > 0);
ASSERT(GetGlobalPoolAllocator());
// Reset the extension behavior for each compilation unit.
ResetExtensionBehavior(extensionBehavior);
// If compiling for WebGL, validate loop and indexing as well.
if (IsWebGLBasedSpec(shaderSpec))
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
// First string is path of source file if flag is set. The actual source follows.
size_t firstSource = 0;
if (compileOptions & SH_SOURCE_PATH)
{
mSourcePath = shaderStrings[0];
++firstSource;
}
bool debugShaderPrecision = getResources().WEBGL_debug_shader_precision == 1;
TIntermediate intermediate(infoSink);
TParseContext parseContext(symbolTable, extensionBehavior, intermediate,
shaderType, shaderSpec, compileOptions, true,
infoSink, debugShaderPrecision);
parseContext.fragmentPrecisionHigh = fragmentPrecisionHigh;
SetGlobalParseContext(&parseContext);
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
TScopedSymbolTableLevel scopedSymbolLevel(&symbolTable);
// Parse shader.
bool success =
(PaParseStrings(numStrings - firstSource, &shaderStrings[firstSource], NULL, &parseContext) == 0) &&
(parseContext.treeRoot != NULL);
shaderVersion = parseContext.getShaderVersion();
if (success && MapSpecToShaderVersion(shaderSpec) < shaderVersion)
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "unsupported shader version";
success = false;
}
TIntermNode *root = NULL;
if (success)
{
mPragma = parseContext.pragma();
if (mPragma.stdgl.invariantAll)
{
symbolTable.setGlobalInvariant();
}
root = parseContext.treeRoot;
success = intermediate.postProcess(root);
// Disallow expressions deemed too complex.
if (success && (compileOptions & SH_LIMIT_EXPRESSION_COMPLEXITY))
success = limitExpressionComplexity(root);
if (success)
success = detectCallDepth(root, infoSink, (compileOptions & SH_LIMIT_CALL_STACK_DEPTH) != 0);
if (success && shaderVersion == 300 && shaderType == GL_FRAGMENT_SHADER)
success = validateOutputs(root);
if (success && (compileOptions & SH_VALIDATE_LOOP_INDEXING))
success = validateLimitations(root);
if (success && (compileOptions & SH_TIMING_RESTRICTIONS))
success = enforceTimingRestrictions(root, (compileOptions & SH_DEPENDENCY_GRAPH) != 0);
if (success && shaderSpec == SH_CSS_SHADERS_SPEC)
rewriteCSSShader(root);
// Unroll for-loop markup needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_INTEGER_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kIntegerIndex);
root->traverse(&marker);
}
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_SAMPLER_ARRAY_INDEX))
{
ForLoopUnrollMarker marker(ForLoopUnrollMarker::kSamplerArrayIndex);
root->traverse(&marker);
if (marker.samplerArrayIndexIsFloatLoopIndex())
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "sampler array index is float loop index";
success = false;
}
}
// Built-in function emulation needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_EMULATE_BUILT_IN_FUNCTIONS))
builtInFunctionEmulator.MarkBuiltInFunctionsForEmulation(root);
// Clamping uniform array bounds needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_CLAMP_INDIRECT_ARRAY_BOUNDS))
arrayBoundsClamper.MarkIndirectArrayBoundsForClamping(root);
if (success && shaderType == GL_VERTEX_SHADER && (compileOptions & SH_INIT_GL_POSITION))
initializeGLPosition(root);
if (success && (compileOptions & SH_UNFOLD_SHORT_CIRCUIT))
{
UnfoldShortCircuitAST unfoldShortCircuit;
root->traverse(&unfoldShortCircuit);
unfoldShortCircuit.updateTree();
}
if (success && (compileOptions & SH_VARIABLES))
{
collectVariables(root);
if (compileOptions & SH_ENFORCE_PACKING_RESTRICTIONS)
{
success = enforcePackingRestrictions();
if (!success)
{
infoSink.info.prefix(EPrefixError);
infoSink.info << "too many uniforms";
}
}
if (success && shaderType == GL_VERTEX_SHADER &&
(compileOptions & SH_INIT_VARYINGS_WITHOUT_STATIC_USE))
initializeVaryingsWithoutStaticUse(root);
}
if (success && (compileOptions & SH_SCALARIZE_VEC_AND_MAT_CONSTRUCTOR_ARGS))
{
ScalarizeVecAndMatConstructorArgs scalarizer(
shaderType, fragmentPrecisionHigh);
root->traverse(&scalarizer);
}
if (success && (compileOptions & SH_REGENERATE_STRUCT_NAMES))
{
RegenerateStructNames gen(symbolTable, shaderVersion);
root->traverse(&gen);
}
}
SetGlobalParseContext(NULL);
if (success)
return root;
return NULL;
}
bool TCompiler::compile(const char* const shaderStrings[],
size_t numStrings,
int compileOptions)
{
TScopedPoolAllocator scopedAlloc(&allocator);
clearResults();
if (numStrings == 0)
return true;
// If compiling for WebGL, validate loop and indexing as well.
if (isWebGLBasedSpec(shaderSpec))
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
// First string is path of source file if flag is set. The actual source follows.
const char* sourcePath = NULL;
size_t firstSource = 0;
if (compileOptions & SH_SOURCE_PATH)
{
sourcePath = shaderStrings[0];
++firstSource;
}
TIntermediate intermediate(infoSink);
TParseContext parseContext(symbolTable, extensionBehavior, intermediate,
shaderType, shaderSpec, compileOptions, true,
sourcePath, infoSink);
parseContext.fragmentPrecisionHigh = fragmentPrecisionHigh;
SetGlobalParseContext(&parseContext);
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
TScopedSymbolTableLevel scopedSymbolLevel(&symbolTable);
// Parse shader.
bool success =
(PaParseStrings(numStrings - firstSource, &shaderStrings[firstSource], NULL, &parseContext) == 0) &&
(parseContext.treeRoot != NULL);
if (success) {
TIntermNode* root = parseContext.treeRoot;
success = intermediate.postProcess(root);
if (success)
success = detectCallDepth(root, infoSink, (compileOptions & SH_LIMIT_CALL_STACK_DEPTH) != 0);
if (success && (compileOptions & SH_VALIDATE_LOOP_INDEXING))
success = validateLimitations(root);
if (success && (compileOptions & SH_TIMING_RESTRICTIONS))
success = enforceTimingRestrictions(root, (compileOptions & SH_DEPENDENCY_GRAPH) != 0);
if (success && shaderSpec == SH_CSS_SHADERS_SPEC)
rewriteCSSShader(root);
// Unroll for-loop markup needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_UNROLL_FOR_LOOP_WITH_INTEGER_INDEX))
ForLoopUnroll::MarkForLoopsWithIntegerIndicesForUnrolling(root);
// Built-in function emulation needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_EMULATE_BUILT_IN_FUNCTIONS))
builtInFunctionEmulator.MarkBuiltInFunctionsForEmulation(root);
// Clamping uniform array bounds needs to happen after validateLimitations pass.
if (success && (compileOptions & SH_CLAMP_INDIRECT_ARRAY_BOUNDS))
arrayBoundsClamper.MarkIndirectArrayBoundsForClamping(root);
// Disallow expressions deemed too complex.
if (success && (compileOptions & SH_LIMIT_EXPRESSION_COMPLEXITY))
success = limitExpressionComplexity(root);
// Call mapLongVariableNames() before collectAttribsUniforms() so in
// collectAttribsUniforms() we already have the mapped symbol names and
// we could composite mapped and original variable names.
// Also, if we hash all the names, then no need to do this for long names.
if (success && (compileOptions & SH_MAP_LONG_VARIABLE_NAMES) && hashFunction == NULL)
mapLongVariableNames(root);
if (success && (compileOptions & SH_VARIABLES)) {
collectVariables(root);
if (compileOptions & SH_ENFORCE_PACKING_RESTRICTIONS) {
success = enforcePackingRestrictions();
if (!success) {
infoSink.info.prefix(EPrefixError);
infoSink.info << "too many uniforms";
}
}
}
if (success && (compileOptions & SH_INTERMEDIATE_TREE))
intermediate.outputTree(root);
if (success && (compileOptions & SH_OBJECT_CODE))
translate(root);
}
// Cleanup memory.
intermediate.remove(parseContext.treeRoot);
return success;
}