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Software transform: Share the fog coef computation with the hardware transform code

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Henrik Rydgård
2026-06-13 00:12:15 +02:00
parent c5931ea690
commit 3ff52b3c90
1 changed files with 7 additions and 12 deletions
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GPU/Common/SoftwareTransformCommon.cpp
+7 -12
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@@ -31,6 +31,7 @@
#include "GPU/Common/FramebufferManagerCommon.h"
#include "GPU/Common/GPUStateUtils.h"
#include "GPU/Common/SoftwareTransformCommon.h"
#include "GPU/Common/ShaderUniforms.h"
#include "GPU/Common/TransformCommon.h"
#include "GPU/Common/VertexDecoderCommon.h"
#include "GPU/Common/VertexReader.h"
@@ -62,7 +63,8 @@ static SoftwareTransformAction ProjectClipAndExpand(SoftwareTransformParams &par
// Note: 0 is BR and 2 is TL.
// The PSP has a funky mechanism where the UV direction of screen-space rectangles is decided by the relative positioning
// of the two corners defining the rectangle.
// of the two corners defining the rectangle. This all boils down to a simple swap of the UVs of the two middle vertices,
// after a check.
static void RotateUV(TransformedVertex v[4]) {
const float x1 = v[2].x;
const float x2 = v[0].x;
@@ -212,17 +214,10 @@ SoftwareTransformAction RunSoftwareTransform(SoftwareTransformParams &params, in
}
} else {
Lighter lighter(vertType);
float fog_end = getFloat24(gstate.fog1);
float fog_slope = getFloat24(gstate.fog2);
// Same fixup as in ShaderManagerGLES.cpp
// Not really sure what a sensible value might be, but let's try 64k.
constexpr float largeFogValue = 65535.0f;
if (my_isnanorinf(fog_end)) {
fog_end = std::signbit(fog_end) ? -largeFogValue : largeFogValue;
}
if (my_isnanorinf(fog_slope)) {
fog_slope = std::signbit(fog_slope) ? -largeFogValue : largeFogValue;
}
float fogVal[2];
UpdateFogCoef(gstate, fogVal);
const float fog_end = fogVal[0];
const float fog_slope = fogVal[1];
const int texW = gstate.getTextureWidth(0);
const int texH = gstate.getTextureHeight(0);