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Automatically determine the epsilon value programatically

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kd-11 2022-04-12 21:57:25 +03:00 committed by kd-11
parent 2db68acab9
commit 60cbd7a88c
1 changed files with 2 additions and 1 deletions
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3
rpcs3/Emu/RSX/Program/GLSLCommon.cpp
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@ -636,7 +636,8 @@ namespace glsl
" const double inv_range = (depth_range > 0.000001) ? (1.0 / (depth_range * pos.w)) : 0.0;\n" " const double inv_range = (depth_range > 0.000001) ? (1.0 / (depth_range * pos.w)) : 0.0;\n"
" const double actual_d = (double(pos.z) - double(real_n * pos.w)) * inv_range;\n" " const double actual_d = (double(pos.z) - double(real_n * pos.w)) * inv_range;\n"
" const double nearest_d = floor(actual_d + 0.5);\n" " const double nearest_d = floor(actual_d + 0.5);\n"
" const double d = _select(actual_d, nearest_d, abs(actual_d - nearest_d) < 0.000002);\n" // Epsilon value settled on empirically " const double epsilon = (inv_range * pos.w) / 16777215.;\n" // Epsilon value is the minimum discernable change in Z that should affect the stored Z
" const double d = _select(actual_d, nearest_d, abs(actual_d - nearest_d) < epsilon);\n"
" return vec4(pos.xy, float(d * pos.w), pos.w);\n" " return vec4(pos.xy, float(d * pos.w), pos.w);\n"
" }\n" " }\n"
" else\n" " else\n"