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glsl: Properly implement shadow filtering when running emulated shadow compare

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- Previous code was completely borked
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kd-11 2020-08-29 00:27:23 +03:00 • committed by Ani
parent e8274d5a59
commit e9cdb248a0
1 changed files with 6 additions and 3 deletions
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9
rpcs3/Emu/RSX/Common/GLSLCommon.h
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@ -691,10 +691,13 @@ namespace glsl
OS <<
"vec4 shadowCompare(sampler2D tex, const in vec3 p, const in uint func)\n"
"{\n"
" vec4 samples = textureGather(tex, p.xy).xxxx;\n"
" vec4 ref = clamp(p.z, 0., 1.).xxxx;\n"
" vec4 samples = textureGather(tex, p.xy, 0);\n"
" float advance_x = dFdx(p).z;\n"
" float advance_y = -dFdy(p).z;\n"
" vec4 off = vec4(advance_y, (advance_x + advance_y), advance_x, 0.);\n"
" vec4 ref = clamp(off + p.z, 0., 1.);\n"
" vec4 filtered = vec4(comparison_passes(samples, ref, func));\n"
" return filtered * dot(filtered, vec4(0.25f));\n"
" return dot(filtered, vec4(0.25f)).xxxx;\n"
"}\n\n"
"vec4 shadowCompareProj(sampler2D tex, const in vec4 p, const in uint func)\n"