thirdparty/ppsspp
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softgpu: Limit minX/maxX per line.

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Only helps when single-threaded, though.
This commit is contained in:
Unknown W. Brackets 2021-11-14 20:48:27 -08:00
parent 49e7d72f41
commit 3b1cc0d3b8
1 changed files with 37 additions and 1 deletions
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38
GPU/Software/Rasterizer.cpp
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@ -570,6 +570,9 @@ struct TriangleEdge {
inline Vec4<int> StepX(const Vec4<int> &w);
inline Vec4<int> StepY(const Vec4<int> &w);
inline void NarrowMinMaxX(const Vec4<int> &w, int64_t minX, int64_t &rowMinX, int64_t &rowMaxX);
inline Vec4<int> StepXTimes(const Vec4<int> &w, int c);
Vec4<int> stepX;
Vec4<int> stepY;
};
@ -606,6 +609,27 @@ inline Vec4<int> TriangleEdge::StepY(const Vec4<int> &w) {
#endif
}
void TriangleEdge::NarrowMinMaxX(const Vec4<int> &w, int64_t minX, int64_t &rowMinX, int64_t &rowMaxX) {
int wmax = std::max(std::max(w.x, w.y), std::max(w.z, w.w));
if (wmax < 0) {
if (stepX.x > 0) {
int steps = -wmax / stepX.x;
rowMinX = std::max(rowMinX, minX + steps * 16 * 2);
} else if (stepX.x <= 0) {
rowMinX = rowMaxX + 1;
}
}
if (wmax >= 0 && stepX.x < 0) {
int steps = (-wmax / stepX.x) + 1;
rowMaxX = std::min(rowMaxX, minX + steps * 16 * 2);
}
}
inline Vec4<int> TriangleEdge::StepXTimes(const Vec4<int> &w, int c) {
return w + stepX * c;
}
static inline Vec4<int> MakeMask(const Vec4<int> &w0, const Vec4<int> &w1, const Vec4<int> &w2, const Vec4<int> &bias0, const Vec4<int> &bias1, const Vec4<int> &bias2, const Vec4<int> &scissor) {
#if defined(_M_SSE) && !PPSSPP_ARCH(X86)
__m128i biased0 = _mm_add_epi32(w0.ivec, bias0.ivec);
@ -716,7 +740,19 @@ void DrawTriangleSlice(
DrawingCoords p = TransformUnit::ScreenToDrawing(ScreenCoords(minX, curY, 0));
for (int64_t curX = minX; curX <= maxX; curX += 32,
int64_t rowMinX = minX, rowMaxX = maxX;
e0.NarrowMinMaxX(w0, minX, rowMinX, rowMaxX);
e1.NarrowMinMaxX(w1, minX, rowMinX, rowMaxX);
e2.NarrowMinMaxX(w2, minX, rowMinX, rowMaxX);
int skipX = (rowMinX - minX) / 32;
w0 = e0.StepXTimes(w0, skipX);
w1 = e1.StepXTimes(w1, skipX);
w2 = e2.StepXTimes(w2, skipX);
scissor_mask = scissor_mask + scissor_step * skipX;
p.x = (p.x + 2 * skipX) & 0x3FF;
for (int64_t curX = rowMinX; curX <= rowMaxX; curX += 32,
w0 = e0.StepX(w0),
w1 = e1.StepX(w1),
w2 = e2.StepX(w2),