void ShGetInfo(const ShHandle handle, ShShaderInfo pname, size_t* params)
{
if (!handle || !params)
return;
TShHandleBase* base = static_cast<TShHandleBase*>(handle);
TCompiler* compiler = base->getAsCompiler();
if (!compiler) return;
switch(pname)
{
case SH_INFO_LOG_LENGTH:
*params = compiler->getInfoSink().info.size() + 1;
break;
case SH_OBJECT_CODE_LENGTH:
*params = compiler->getInfoSink().obj.size() + 1;
break;
case SH_ACTIVE_UNIFORMS:
*params = compiler->getUniforms().size();
break;
case SH_ACTIVE_UNIFORM_MAX_LENGTH:
*params = 1 + MAX_SYMBOL_NAME_LEN;
break;
case SH_ACTIVE_ATTRIBUTES:
*params = compiler->getAttribs().size();
break;
case SH_ACTIVE_ATTRIBUTE_MAX_LENGTH:
*params = 1 + MAX_SYMBOL_NAME_LEN;
break;
case SH_VARYINGS:
*params = compiler->getVaryings().size();
break;
case SH_VARYING_MAX_LENGTH:
*params = 1 + MAX_SYMBOL_NAME_LEN;
break;
case SH_MAPPED_NAME_MAX_LENGTH:
// Use longer length than MAX_SHORTENED_IDENTIFIER_SIZE to
// handle array and struct dereferences.
*params = 1 + MAX_SYMBOL_NAME_LEN;
break;
case SH_NAME_MAX_LENGTH:
*params = 1 + MAX_SYMBOL_NAME_LEN;
break;
case SH_HASHED_NAME_MAX_LENGTH:
if (compiler->getHashFunction() == NULL) {
*params = 0;
} else {
// 64 bits hashing output requires 16 bytes for hex
// representation.
const char HashedNamePrefix[] = HASHED_NAME_PREFIX;
*params = 16 + sizeof(HashedNamePrefix);
}
break;
case SH_HASHED_NAMES_COUNT:
*params = compiler->getNameMap().size();
break;
default:
UNREACHABLE();
}
}
void ShGetVariableInfo(const ShHandle handle,
ShShaderInfo varType,
int index,
size_t* length,
int* size,
ShDataType* type,
ShPrecisionType* precision,
int* staticUse,
char* name,
char* mappedName)
{
if (!handle || !size || !type || !precision || !staticUse || !name)
return;
ASSERT((varType == SH_ACTIVE_ATTRIBUTES) ||
(varType == SH_ACTIVE_UNIFORMS) ||
(varType == SH_VARYINGS));
TShHandleBase* base = reinterpret_cast<TShHandleBase*>(handle);
TCompiler* compiler = base->getAsCompiler();
if (compiler == 0)
return;
const TVariableInfoList& varList =
varType == SH_ACTIVE_ATTRIBUTES ? compiler->getAttribs() :
(varType == SH_ACTIVE_UNIFORMS ? compiler->getUniforms() :
compiler->getVaryings());
if (index < 0 || index >= static_cast<int>(varList.size()))
return;
const TVariableInfo& varInfo = varList[index];
if (length) *length = varInfo.name.size();
*size = varInfo.size;
*type = varInfo.type;
switch (varInfo.precision) {
case EbpLow:
*precision = SH_PRECISION_LOWP;
break;
case EbpMedium:
*precision = SH_PRECISION_MEDIUMP;
break;
case EbpHigh:
*precision = SH_PRECISION_HIGHP;
break;
default:
// Some types does not support precision, for example, boolean.
*precision = SH_PRECISION_UNDEFINED;
break;
}
*staticUse = varInfo.staticUse ? 1 : 0;
// This size must match that queried by
// SH_ACTIVE_UNIFORM_MAX_LENGTH, SH_ACTIVE_ATTRIBUTE_MAX_LENGTH, SH_VARYING_MAX_LENGTH
// in ShGetInfo, below.
size_t variableLength = 1 + MAX_SYMBOL_NAME_LEN;
ASSERT(checkVariableMaxLengths(handle, variableLength));
strncpy(name, varInfo.name.c_str(), variableLength);
name[variableLength - 1] = 0;
if (mappedName) {
// This size must match that queried by
// SH_MAPPED_NAME_MAX_LENGTH in ShGetInfo, below.
size_t maxMappedNameLength = 1 + MAX_SYMBOL_NAME_LEN;
ASSERT(checkMappedNameMaxLength(handle, maxMappedNameLength));
strncpy(mappedName, varInfo.mappedName.c_str(), maxMappedNameLength);
mappedName[maxMappedNameLength - 1] = 0;
}
}