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PixelShaderGen: Use integer math for sampling textures.

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This commit is contained in:
Tony Wasserka 2013-08-14 15:40:24 +02:00
parent 1b3b12caa0
commit 0e711bf520
1 changed files with 11 additions and 8 deletions
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19
Source/Core/VideoCommon/PixelShaderGen.cpp
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@ -390,6 +390,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
}
out.Write(" float4 c0 = " I_COLORS"[1], c1 = " I_COLORS"[2], c2 = " I_COLORS"[3], prev = float4(0.0, 0.0, 0.0, 0.0), textemp = float4(0.0, 0.0, 0.0, 0.0), rastemp = float4(0.0, 0.0, 0.0, 0.0), konsttemp = float4(0.0, 0.0, 0.0, 0.0);\n"
" int4 itextemp = int4(0, 0, 0, 0);\n"
" float3 comp16 = float3(1.0, 255.0, 0.0), comp24 = float3(1.0, 255.0, 255.0*255.0);\n"
" float alphabump=0.0;\n"
" float3 tevcoord=float3(0.0, 0.0, 0.0);\n"
@ -488,8 +489,9 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
else
out.Write("\ttempcoord = float2(0.0, 0.0);\n");
out.Write("float3 indtex%d = ", i);
out.Write("\tint3 iindtex%d = ", i);
SampleTexture<T>(out, "tempcoord", "abg", texmap, ApiType);
out.Write("\tfloat3 indtex%d = float3(iindtex%d) / 255.0f;\n", i, i);
}
}
@ -583,9 +585,9 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
// theoretical final depth value is used for fog calculation, though, so we have to emulate ztextures anyway
if (bpmem.ztex2.op != ZTEXTURE_DISABLE && !skip_ztexture)
{
// use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
// use the texture input of the last texture stage (itextemp), hopefully this has been read and is in correct format...
out.SetConstantsUsed(C_ZBIAS, C_ZBIAS+1);
out.Write("zCoord = dot(" I_ZBIAS"[0].xyzw, textemp.xyzw) + " I_ZBIAS"[1].w %s;\n",
out.Write("zCoord = dot(" I_ZBIAS"[0].xyzw, float4(itextemp.xyzw)/255.0) + " I_ZBIAS"[1].w %s;\n",
(bpmem.ztex2.op == ZTEXTURE_ADD) ? "+ zCoord" : "");
// U24 overflow emulation
@ -822,13 +824,14 @@ static inline void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, AP
int texmap = bpmem.tevorders[n/2].getTexMap(n&1);
uid_data.SetTevindrefTexmap(i, texmap);
out.Write("textemp = ");
out.Write("itextemp = ");
SampleTexture<T>(out, "tevcoord", texswap, texmap, ApiType);
}
else
{
out.Write("textemp = float4(1.0, 1.0, 1.0, 1.0);\n");
out.Write("itextemp = int4(255, 255, 255, 255);\n");
}
out.Write("textemp = float4(itextemp) / 255.0f;\n");
if (cc.a == TEVCOLORARG_KONST || cc.b == TEVCOLORARG_KONST ||
@ -1056,9 +1059,9 @@ static inline void SampleTexture(T& out, const char *texcoords, const char *texs
out.SetConstantsUsed(C_TEXDIMS+texmap,C_TEXDIMS+texmap);
if (ApiType == API_D3D)
out.Write("Tex%d.Sample(samp%d,%s.xy * " I_TEXDIMS"[%d].xy).%s;\n", texmap,texmap, texcoords, texmap, texswap);
else // OGL
out.Write("texture(samp%d,%s.xy * " I_TEXDIMS"[%d].xy).%s;\n", texmap, texcoords, texmap, texswap);
out.Write("int4(round(255.0 * Tex%d.Sample(samp%d,%s.xy * " I_TEXDIMS"[%d].xy))).%s;\n", texmap,texmap, texcoords, texmap, texswap);
else
out.Write("int4(round(255.0 * texture(samp%d,%s.xy * " I_TEXDIMS"[%d].xy))).%s;\n", texmap, texcoords, texmap, texswap);
}
static const char *tevAlphaFuncsTable[] =