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softgpu: rotate uvs in throughmode.

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Unknown W. Brackets 2014-01-11 09:51:09 -08:00
parent 62eb701fa0
commit 55fe5a950e
1 changed files with 18 additions and 3 deletions
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21
GPU/Software/Clipper.cpp
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@ -15,10 +15,12 @@
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "../GPUState.h"
#include <algorithm>
#include "Clipper.h"
#include "Rasterizer.h"
#include "GPU/GPUState.h"
#include "GPU/Software/Clipper.h"
#include "GPU/Software/Rasterizer.h"
namespace Clipper {
@ -123,6 +125,17 @@ static inline int CalcClipMask(const ClipCoords& v)
} \
}
static void RotateUVThrough(VertexData &tl, VertexData &tr, VertexData &bl, VertexData &br) {
const fixed16 x1 = tl.screenpos.x;
const fixed16 x2 = br.screenpos.x;
const fixed16 y1 = tl.screenpos.y;
const fixed16 y2 = br.screenpos.y;
if ((x1 < x2 && y1 > y2) || (x1 > x2 && y1 < y2)) {
std::swap(bl.texturecoords, tr.texturecoords);
}
}
void ProcessQuad(const VertexData& v0, const VertexData& v1)
{
if (!gstate.isModeThrough()) {
@ -198,6 +211,8 @@ void ProcessQuad(const VertexData& v0, const VertexData& v1)
bottomright = &buf[i];
}
RotateUVThrough(*topleft, *topright, *bottomleft, *bottomright);
// Four triangles to do backfaces as well. Two of them will get backface culled.
Rasterizer::DrawTriangle(*topleft, *topright, *bottomright);
Rasterizer::DrawTriangle(*bottomright, *topright, *topleft);