bool Parser::ParseBlendOperation(ngfx::BlendOperation & color, ngfx::BlendOperation & alpha)
{
if (!IsBlendOperation(Cur().Str())) {
SpawnError("Failed to parse color blend operation");
return false;
}
color = blendOpKeywords[Consume().Str()];
if (Match(Token::TOK_COMMA)) {
Token alphaTok = Consume();
if (!IsBlendOperation(alphaTok.Str())) {
SpawnError("Failed to parse alpha blend operation");
return false;
}
alpha = blendOpKeywords[alphaTok.Str()];
}
return true;
}
bool IsStencilOperation(Token const & tok)
{
auto tokStr = (std::string)tok.Str();
return stencilKeywords.find(tokStr) != stencilKeywords.end();
}
bool IsComparisonFunction(Token const & tok)
{
auto tokStr = (std::string)tok.Str();
return comparisonKeywords.find(tokStr) != comparisonKeywords.end();
}