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Cxbx-Reloaded
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Fixed XDK Fog sample over-saturation by literally saturating all COLOR-semantic outputs (oD0, oD1, oB0 and oB1)! 

Also updated the ARL bias, applied the frexp intrinsic to our LOGP function and updated LIT according to 6e3a387c01/src/Shader/ShaderCore.cpp (L1168)
This commit is contained in:
patrickvl 2019-12-22 15:47:46 +01:00
parent 76d45fdd63
commit f97a642bc9
1 changed files with 18 additions and 20 deletions
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22
src/core/hle/D3D8/Direct3D9/CxbxVertexShaderTemplate.hlsl
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@ -61,8 +61,8 @@ float4 c(int register_number)
// some titles produce values just below the threshold of the next integer.
// We can add a small bias to make sure it's bumped over the threshold
// Test Case: Azurik (divides indexes 755, then scales them back in the vertex shader)
#define BIAS 0.0001
// TODO : Use 0.001 like xqemu?
#define BIAS 0.001
// NOTE : Was 0.0001, unlike xqemu
// 2.14.1.11 Vertex Program Floating Point Requirements
// The floor operations used by the ARL and EXP instructions must
@ -196,10 +196,9 @@ float4 _logp(float src)
dest.z = 1.#INF;
} else {
#endif
float exponent = floor(log2(src)); // TODO : x_floor
float mantissa = 1 / exp2(exponent);
float z = log2(src); // TODO : exponent + log2(mantissa); // TODO : Or log2(t)?
// TODO : float exponent = frexp(src + BIAS, /*out*/mantissa);
float exponent;
float mantissa = frexp(src/* + BIAS*/, /*out*/exponent);
float z = log2(src);
dest.x = exponent;
dest.y = mantissa;
dest.z = z;
@ -228,8 +227,7 @@ float4 _lit(float4 src0)
float4 dest;
dest.x = 1;
dest.y = max(0, diffuse);
dest.z = diffuse > 0 ? exp2(specPower * log(blinn)) : 0;
// TODO : Use dest.z = (diffuse > 0) && (blinn > 0) ? pow(blinn, specPower) : 0;
dest.z = (diffuse > 0) && (blinn > 0) ? pow(blinn, specPower) : 0;
dest.w = 1;
return dest;
@ -306,12 +304,12 @@ R"DELIMITER(
VS_OUTPUT xOut;
xOut.oPos = reverseScreenspaceTransform(oPos);
xOut.oD0 = oD0;
xOut.oD1 = oD1;
xOut.oD0 = saturate(oD0);
xOut.oD1 = saturate(oD1);
xOut.oFog = oFog.x;
xOut.oPts = oPts.x;
xOut.oB0 = oB0;
xOut.oB1 = oB1;
xOut.oB0 = saturate(oB0);
xOut.oB1 = saturate(oB1);
xOut.oT0 = oT0;
xOut.oT1 = oT1;
xOut.oT2 = oT2;