bool TCompiler::compile(const char* const shaderStrings[],
const int numStrings,
int compileOptions)
{
TScopedPoolAllocator scopedAlloc(&allocator, true);
clearResults();
if (numStrings == 0)
return true;
// If compiling for WebGL, validate loop and indexing as well.
if (shaderSpec == SH_WEBGL_SPEC)
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
// First string is path of source file if flag is set. The actual source follows.
const char* sourcePath = NULL;
int firstSource = 0;
if (compileOptions & SH_SOURCE_PATH)
{
sourcePath = shaderStrings[0];
++firstSource;
}
TIntermediate intermediate(infoSink);
TParseContext parseContext(symbolTable, extensionBehavior, intermediate,
shaderType, shaderSpec, compileOptions,
sourcePath, infoSink);
GlobalParseContext = &parseContext;
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
symbolTable.push();
if (!symbolTable.atGlobalLevel())
infoSink.info.message(EPrefixInternalError, "Wrong symbol table level");
// 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 && (compileOptions & SH_VALIDATE_LOOP_INDEXING))
success = validateLimitations(root);
if (success && (compileOptions & SH_INTERMEDIATE_TREE))
intermediate.outputTree(root);
if (success && (compileOptions & SH_OBJECT_CODE))
translate(root);
if (success && (compileOptions & SH_ATTRIBUTES_UNIFORMS))
collectAttribsUniforms(root);
}
// Cleanup memory.
intermediate.remove(parseContext.treeRoot);
// Ensure symbol table is returned to the built-in level,
// throwing away all but the built-ins.
while (!symbolTable.atBuiltInLevel())
symbolTable.pop();
return success;
}
bool TCompiler::compile(const char* const shaderStrings[],
size_t numStrings,
int compileOptions)
{
TScopedPoolAllocator scopedAlloc(&allocator, true);
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;
GlobalParseContext = &parseContext;
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
symbolTable.push();
if (!symbolTable.atGlobalLevel()) {
infoSink.info.prefix(EPrefixInternalError);
infoSink.info << "Wrong symbol table level";
}
// 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_ATTRIBUTES_UNIFORMS)) {
collectAttribsUniforms(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);
// Ensure symbol table is returned to the built-in level,
// throwing away all but the built-ins.
while (!symbolTable.atBuiltInLevel())
symbolTable.pop();
return success;
}
bool TCompiler::compile(const char* const shaderStrings[],
const int numStrings,
int compileOptions)
{
TScopedPoolAllocator scopedAlloc(&allocator, true);
clearResults();
if (numStrings == 0)
return true;
// If compiling for WebGL, validate loop and indexing as well.
if (shaderSpec == SH_WEBGL_SPEC)
compileOptions |= SH_VALIDATE_LOOP_INDEXING;
// First string is path of source file if flag is set. The actual source follows.
const char* sourcePath = NULL;
int 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);
GlobalParseContext = &parseContext;
// We preserve symbols at the built-in level from compile-to-compile.
// Start pushing the user-defined symbols at global level.
symbolTable.push();
if (!symbolTable.atGlobalLevel())
infoSink.info.message(EPrefixInternalError, "Wrong symbol table level");
// 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 = detectRecursion(root);
if (success && (compileOptions & SH_VALIDATE_LOOP_INDEXING))
success = validateLimitations(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);
// Call mapLongVariableNames() before collectAttribsUniforms() so in
// collectAttribsUniforms() we already have the mapped symbol names and
// we could composite mapped and original variable names.
if (success && (compileOptions & SH_MAP_LONG_VARIABLE_NAMES))
mapLongVariableNames(root);
if (success && (compileOptions & SH_ATTRIBUTES_UNIFORMS))
collectAttribsUniforms(root);
if (success && (compileOptions & SH_INTERMEDIATE_TREE))
intermediate.outputTree(root);
if (success && (compileOptions & SH_OBJECT_CODE))
translate(root);
}
// Cleanup memory.
intermediate.remove(parseContext.treeRoot);
// Ensure symbol table is returned to the built-in level,
// throwing away all but the built-ins.
while (!symbolTable.atBuiltInLevel())
symbolTable.pop();
return success;
}