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LibSoftGPU: Only interpolate fog values if fog is enabled

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Stephan Unverwerth 2022-01-05 19:50:41 +01:00 committed by Ali Mohammad Pur
parent f510a3cd8f
commit 66cf2ea240
Notes: sideshowbarker 2024-07-17 21:19:34 +09:00 
Author: https://github.com/sunverwerth
Commit: https://github.com/SerenityOS/serenity/commit/66cf2ea2405
Pull-request: https://github.com/SerenityOS/serenity/pull/11568
Reviewed-by: https://github.com/Hendiadyoin1 ✅
Reviewed-by: https://github.com/Quaker762 ✅
Reviewed-by: https://github.com/gmta
1 changed files with 7 additions and 5 deletions
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12
Userland/Libraries/LibSoftGPU/Device.cpp
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@ -375,12 +375,14 @@ static void rasterize_triangle(const RasterizerOptions& options, Gfx::Bitmap& re
quad.uv = interpolate(expand4(vertex0.tex_coord), expand4(vertex1.tex_coord), expand4(vertex2.tex_coord), quad.barycentrics);
// Calculate depth of fragment for fog
//
// OpenGL 1.5 spec chapter 3.10: "An implementation may choose to approximate the
// eye-coordinate distance from the eye to each fragment center by |Ze|."
if (options.fog_enabled) {
// Calculate depth of fragment for fog
//
// OpenGL 1.5 spec chapter 3.10: "An implementation may choose to approximate the
// eye-coordinate distance from the eye to each fragment center by |Ze|."
quad.fog_depth = interpolate(expand4(vertex0_eye_absz), expand4(vertex1_eye_absz), expand4(vertex2_eye_absz), quad.barycentrics);
quad.fog_depth = interpolate(expand4(vertex0_eye_absz), expand4(vertex1_eye_absz), expand4(vertex2_eye_absz), quad.barycentrics);
}
pixel_shader(quad);