From 0e6a608245700d1fe08292db96ed29f46b6cb9d6 Mon Sep 17 00:00:00 2001 From: bunnei Date: Thu, 22 Nov 2018 00:51:01 -0500 Subject: maxwell_3d: Implement alternate blend equations. - Used by Undertale. --- src/video_core/engines/maxwell_3d.h | 7 +++++++ src/video_core/renderer_opengl/maxwell_to_gl.h | 5 +++++ 2 files changed, 12 insertions(+) diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h index 9e480dc39..eff6abd55 100644 --- a/src/video_core/engines/maxwell_3d.h +++ b/src/video_core/engines/maxwell_3d.h @@ -389,6 +389,13 @@ public: ReverseSubtract = 3, Min = 4, 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 { diff --git a/src/video_core/renderer_opengl/maxwell_to_gl.h b/src/video_core/renderer_opengl/maxwell_to_gl.h index 065b3929c..a8833c06e 100644 --- a/src/video_core/renderer_opengl/maxwell_to_gl.h +++ b/src/video_core/renderer_opengl/maxwell_to_gl.h @@ -218,14 +218,19 @@ inline GLenum DepthCompareFunc(Tegra::Texture::DepthCompareFunc func) { inline GLenum BlendEquation(Maxwell::Blend::Equation equation) { switch (equation) { case Maxwell::Blend::Equation::Add: + case Maxwell::Blend::Equation::AddGL: return GL_FUNC_ADD; case Maxwell::Blend::Equation::Subtract: + case Maxwell::Blend::Equation::SubtractGL: return GL_FUNC_SUBTRACT; case Maxwell::Blend::Equation::ReverseSubtract: + case Maxwell::Blend::Equation::ReverseSubtractGL: return GL_FUNC_REVERSE_SUBTRACT; case Maxwell::Blend::Equation::Min: + case Maxwell::Blend::Equation::MinGL: return GL_MIN; case Maxwell::Blend::Equation::Max: + case Maxwell::Blend::Equation::MaxGL: return GL_MAX; } LOG_ERROR(Render_OpenGL, "Unimplemented blend equation={}", static_cast(equation)); -- cgit v1.2.3