Пример #1
0
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();
    }
}
Пример #2
0
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;
    }
}