void RenderTarget::applyBlendMode(const BlendMode& mode)
{
// Apply the blend mode, falling back to the non-separate versions if necessary
if (GLEXT_blend_func_separate)
{
glCheck(GLEXT_glBlendFuncSeparate(
factorToGlConstant(mode.colorSrcFactor), factorToGlConstant(mode.colorDstFactor),
factorToGlConstant(mode.alphaSrcFactor), factorToGlConstant(mode.alphaDstFactor)));
}
else
{
glCheck(glBlendFunc(
factorToGlConstant(mode.colorSrcFactor),
factorToGlConstant(mode.colorDstFactor)));
}
if (GLEXT_blend_equation_separate)
{
glCheck(GLEXT_glBlendEquationSeparate(
equationToGlConstant(mode.colorEquation),
equationToGlConstant(mode.alphaEquation)));
}
else
{
glCheck(GLEXT_glBlendEquation(equationToGlConstant(mode.colorEquation)));
}
m_cache.lastBlendMode = mode;
}
void RenderTarget::applyBlendMode(const BlendMode& mode)
{
// Apply the blend mode, falling back to the non-separate versions if necessary
//if (GLEXT_blend_func_separate)
if (1)
{
glCheck(GLEXT_glBlendFuncSeparate(
factorToGlConstant(mode.colorSrcFactor), factorToGlConstant(mode.colorDstFactor),
factorToGlConstant(mode.alphaSrcFactor), factorToGlConstant(mode.alphaDstFactor)));
}
else
{
glCheck(glBlendFunc(
factorToGlConstant(mode.colorSrcFactor),
factorToGlConstant(mode.colorDstFactor)));
}
//if (GLEXT_blend_minmax && GLEXT_blend_subtract)
if (1)
{
//if (GLEXT_blend_equation_separate)
if (1)
{
glCheck(GLEXT_glBlendEquationSeparate(
equationToGlConstant(mode.colorEquation),
equationToGlConstant(mode.alphaEquation)));
}
else
{
glCheck(GLEXT_glBlendEquation(equationToGlConstant(mode.colorEquation)));
}
}
else if ((mode.colorEquation != BlendMode::Add) || (mode.alphaEquation != BlendMode::Add))
{
static bool warned = false;
if (!warned)
{
err() << "OpenGL extension EXT_blend_minmax and/or EXT_blend_subtract unavailable" << std::endl;
err() << "Selecting a blend equation not possible" << std::endl;
err() << "Ensure that hardware acceleration is enabled if available" << std::endl;
warned = true;
}
}
m_cache.lastBlendMode = mode;
}
