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PixelShaderGen: Clamp zCoord to the depth range.

This commit is contained in:
Jules Blok 2015-05-08 14:26:48 +02:00
parent d04af15ad4
commit 1d745d632a
1 changed files with 1 additions and 0 deletions
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Source/Core/VideoCommon/PixelShaderGen.cpp
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@ -570,6 +570,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
// the screen space depth value = far z + (clip z / clip w) * z range // the screen space depth value = far z + (clip z / clip w) * z range
out.Write("\tint zCoord = " I_ZBIAS"[1].x + int((clipPos.z / clipPos.w) * float(" I_ZBIAS"[1].y));\n"); out.Write("\tint zCoord = " I_ZBIAS"[1].x + int((clipPos.z / clipPos.w) * float(" I_ZBIAS"[1].y));\n");
} }
out.Write("\tzCoord = clamp(zCoord, " I_ZBIAS"[1].x - " I_ZBIAS"[1].y, " I_ZBIAS"[1].x);\n");
// depth texture can safely be ignored if the result won't be written to the depth buffer (early_ztest) and isn't used for fog either // depth texture can safely be ignored if the result won't be written to the depth buffer (early_ztest) and isn't used for fog either
const bool skip_ztexture = !per_pixel_depth && !bpmem.fog.c_proj_fsel.fsel; const bool skip_ztexture = !per_pixel_depth && !bpmem.fog.c_proj_fsel.fsel;