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rsx: Significantly reduce the applied subpixel bias when handling unnormalized access

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- If a large value is set (e.g 0.5) rounding will sample 'up' and we can read the wrong texel
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kd-11
2021-08-09 19:53:25 +03:00
committed by kd-11
parent 7fdbadf645
commit c9afb3daaa
1 changed files with 3 additions and 2 deletions
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rpcs3/Emu/RSX/RSXThread.cpp
+3 -2
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@@ -1907,8 +1907,9 @@ namespace rsx
if (tex.min_filter() == rsx::texture_minify_filter::nearest || if (tex.min_filter() == rsx::texture_minify_filter::nearest ||
tex.mag_filter() == rsx::texture_magnify_filter::nearest) tex.mag_filter() == rsx::texture_magnify_filter::nearest)
{ {
// Subpixel offset so that (X + bias) * scale will round correctly // Subpixel offset so that (X + bias) * scale will round correctly.
current_fragment_program.texture_params[i].subpixel_bias = 0.5f; // This is done to work around fdiv precision issues in some GPUs (NVIDIA)
current_fragment_program.texture_params[i].subpixel_bias = 0.01f;
} }
} }