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maxwell_3d: Implement alternate blend equations.

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- Used by Undertale.
This commit is contained in:
bunnei 2018-11-22 00:51:01 -05:00
parent bb175ab430
commit 0e6a608245
2 changed files with 12 additions and 0 deletions
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7
src/video_core/engines/maxwell_3d.h
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@ -389,6 +389,13 @@ public:
ReverseSubtract = 3, ReverseSubtract = 3,
Min = 4, Min = 4,
Max = 5, Max = 5,
// These values are used by Nouveau and some games.
AddGL = 0x8006,
SubtractGL = 0x8007,
ReverseSubtractGL = 0x8008,
MinGL = 0x800a,
MaxGL = 0x800b
}; };
enum class Factor : u32 { enum class Factor : u32 {

5
src/video_core/renderer_opengl/maxwell_to_gl.h
View File

@ -218,14 +218,19 @@ inline GLenum DepthCompareFunc(Tegra::Texture::DepthCompareFunc func) {
inline GLenum BlendEquation(Maxwell::Blend::Equation equation) { inline GLenum BlendEquation(Maxwell::Blend::Equation equation) {
switch (equation) { switch (equation) {
case Maxwell::Blend::Equation::Add: case Maxwell::Blend::Equation::Add:
case Maxwell::Blend::Equation::AddGL:
return GL_FUNC_ADD; return GL_FUNC_ADD;
case Maxwell::Blend::Equation::Subtract: case Maxwell::Blend::Equation::Subtract:
case Maxwell::Blend::Equation::SubtractGL:
return GL_FUNC_SUBTRACT; return GL_FUNC_SUBTRACT;
case Maxwell::Blend::Equation::ReverseSubtract: case Maxwell::Blend::Equation::ReverseSubtract:
case Maxwell::Blend::Equation::ReverseSubtractGL:
return GL_FUNC_REVERSE_SUBTRACT; return GL_FUNC_REVERSE_SUBTRACT;
case Maxwell::Blend::Equation::Min: case Maxwell::Blend::Equation::Min:
case Maxwell::Blend::Equation::MinGL:
return GL_MIN; return GL_MIN;
case Maxwell::Blend::Equation::Max: case Maxwell::Blend::Equation::Max:
case Maxwell::Blend::Equation::MaxGL:
return GL_MAX; return GL_MAX;
} }
LOG_ERROR(Render_OpenGL, "Unimplemented blend equation={}", static_cast<u32>(equation)); LOG_ERROR(Render_OpenGL, "Unimplemented blend equation={}", static_cast<u32>(equation));