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PixelShaderGen: extract iround

This commit is contained in:
degasus 2014-03-17 17:11:27 +01:00
parent 2bc2b73e03
commit c80717ac2e
1 changed files with 14 additions and 8 deletions
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22
Source/Core/VideoCommon/PixelShaderGen.cpp
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@ -124,8 +124,8 @@ static const char *tevAInputTable[] =
static const char *tevRasTable[] =
{
"int4(round(colors_0 * 255.0))",
"int4(round(colors_1 * 255.0))",
"iround(colors_0 * 255.0)",
"iround(colors_1 * 255.0)",
"ERROR13", //2
"ERROR14", //3
"ERROR15", //4
@ -193,6 +193,12 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
"\treturn tmp.x + tmp.y + tmp.z + tmp.w;\n"
"}\n\n");
// rounding + casting to integer at once in a single function
out.Write("int iround(float x) { return int (round(x)); }\n"
"int2 iround(float2 x) { return int2(round(x)); }\n"
"int3 iround(float3 x) { return int3(round(x)); }\n"
"int4 iround(float4 x) { return int4(round(x)); }\n\n");
if (ApiType == API_OPENGL)
{
// Declare samplers
@ -386,7 +392,7 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
out.Write("\t\tuv%d.xy = uv%d.xy / uv%d.z;\n", i, i, i);
}
out.Write("\tint2 fixpoint_uv%d = int2(round(uv%d.xy * " I_TEXDIMS"[%d].zw * 128.0));\n\n", i, i, i);
out.Write("\tint2 fixpoint_uv%d = iround(uv%d.xy * " I_TEXDIMS"[%d].zw * 128.0);\n\n", i, i, i);
// TODO: S24 overflows here?
}
}
@ -473,12 +479,12 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
// The performance impact of this additional calculation doesn't matter, but it prevents
// the host GPU driver from performing any early depth test optimizations.
if (g_ActiveConfig.bFastDepthCalc)
out.Write("\tint zCoord = int(round(rawpos.z * float(0xFFFFFF)));\n");
out.Write("\tint zCoord = iround(rawpos.z * float(0xFFFFFF));\n");
else
{
out.SetConstantsUsed(C_ZBIAS+1, C_ZBIAS+1);
// the screen space depth value = far z + (clip z / clip w) * z range
out.Write("\tint zCoord = " I_ZBIAS"[1].x + int(round((clipPos.z / clipPos.w) * float(" I_ZBIAS"[1].y)));\n");
out.Write("\tint zCoord = " I_ZBIAS"[1].x + iround((clipPos.z / clipPos.w) * float(" I_ZBIAS"[1].y));\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
@ -887,9 +893,9 @@ 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("int4(round(255.0 * Tex%d.Sample(samp%d,%s.xy * " I_TEXDIMS"[%d].xy))).%s;\n", texmap,texmap, texcoords, texmap, texswap);
out.Write("iround(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);
out.Write("iround(255.0 * texture(samp%d,%s.xy * " I_TEXDIMS"[%d].xy)).%s;\n", texmap, texcoords, texmap, texswap);
}
static const char *tevAlphaFuncsTable[] =
@ -1029,7 +1035,7 @@ static inline void WriteFog(T& out, pixel_shader_uid_data& uid_data)
WARN_LOG(VIDEO, "Unknown Fog Type! %08x", bpmem.fog.c_proj_fsel.fsel);
}
out.Write("\tint ifog = int(round(fog * 256.0));\n");
out.Write("\tint ifog = iround(fog * 256.0);\n");
out.Write("\tprev.rgb = (prev.rgb * (256 - ifog) + " I_FOGCOLOR".rgb * ifog) >> 8;\n");
}