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softgpu: Never write alpha, only stencil.

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Unknown W. Brackets 2013-11-10 00:52:37 -08:00
parent be9fe9ad9a
commit 5817684e28
1 changed files with 2 additions and 3 deletions
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5
GPU/Software/Rasterizer.cpp
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@ -932,6 +932,7 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
if (!ColorTestPassed(prim_color_rgb))
continue;
// TODO: Does a need to be clamped?
if (gstate.isAlphaTestEnabled() && !gstate.isModeClear())
if (!AlphaTestPassed(prim_color_a))
continue;
@ -969,13 +970,11 @@ void DrawTriangle(const VertexData& v0, const VertexData& v1, const VertexData&
if (prim_color_rgb.r() > 255) prim_color_rgb.r() = 255;
if (prim_color_rgb.g() > 255) prim_color_rgb.g() = 255;
if (prim_color_rgb.b() > 255) prim_color_rgb.b() = 255;
if (prim_color_a > 255) prim_color_a = 255;
if (prim_color_rgb.r() < 0) prim_color_rgb.r() = 0;
if (prim_color_rgb.g() < 0) prim_color_rgb.g() = 0;
if (prim_color_rgb.b() < 0) prim_color_rgb.b() = 0;
if (prim_color_a < 0) prim_color_a = 0;
u32 new_color = Vec4<int>(prim_color_rgb.r(), prim_color_rgb.g(), prim_color_rgb.b(), prim_color_a).ToRGBA();
u32 new_color = Vec4<int>(prim_color_rgb.r(), prim_color_rgb.g(), prim_color_rgb.b(), GetPixelStencil(p.x, p.y)).ToRGBA();
u32 old_color = GetPixelColor(p.x, p.y);
// TODO: Is alpha blending still performed if logic ops are enabled?