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Depth Raster: Add more stats, discard triangles with < 10 px area. Still good results.

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This commit is contained in:
Henrik Rydgård 2024-12-22 10:02:29 +01:00
parent 19434ff303
commit 3ccb01b09c
3 changed files with 33 additions and 14 deletions
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33
GPU/Common/DepthRaster.cpp
View file

@ -81,10 +81,19 @@ struct Edge {
}
};
enum class TriangleResult {
OK,
NoPixels,
Backface,
TooSmall,
};
constexpr int MIN_TRI_AREA = 10;
// Adapted from Intel's depth rasterizer example.
// Started with the scalar version, will SIMD-ify later.
// x1/y1 etc are the scissor rect.
bool DepthRasterTriangle(uint16_t *depthBuf, int stride, int x1, int y1, int x2, int y2, const int *tx, const int *ty, const float *tz, ZCompareMode compareMode) {
TriangleResult DepthRasterTriangle(uint16_t *depthBuf, int stride, int x1, int y1, int x2, int y2, const int *tx, const int *ty, const float *tz, ZCompareMode compareMode) {
int tileStartX = x1;
int tileEndX = x2;
@ -110,13 +119,16 @@ bool DepthRasterTriangle(uint16_t *depthBuf, int stride, int x1, int y1, int x2,
int maxY = std::min(std::max(std::max(v0y, v1y), v2y), tileEndY);
if (maxX == minX || maxY == minY) {
// No pixels, or outside screen.
return false;
return TriangleResult::NoPixels;
}
// TODO: Cull really small triangles here - we can increase the threshold a bit probably.
int triArea = (v1y - v2y) * v0x + (v2x - v1x) * v0y + (v1x * v2y - v2x * v1y);
if (triArea <= 0) {
return false;
return TriangleResult::Backface;
}
if (triArea < MIN_TRI_AREA) {
return TriangleResult::TooSmall;
}
float oneOverTriArea = 1.0f / (float)triArea;
@ -179,7 +191,7 @@ bool DepthRasterTriangle(uint16_t *depthBuf, int stride, int x1, int y1, int x2,
}
}
}
return true;
return TriangleResult::OK;
}
void DecodeAndTransformForDepthRaster(float *dest, const float *worldviewproj, const void *vertexData, int indexLowerBound, int indexUpperBound, VertexDecoder *dec, u32 vertTypeID) {
@ -448,14 +460,15 @@ void DepthRasterScreenVerts(uint16_t *depth, int depthStride, GEPrimitiveType pr
break;
case GE_PRIM_TRIANGLES:
{
int culled = 0;
int stats[4]{};
for (int i = 0; i < count; i += 3) {
if (!DepthRasterTriangle(depth, depthStride, x1, y1, x2, y2, &tx[i], &ty[i], &tz[i], comp)) {
culled++;
}
TriangleResult result = DepthRasterTriangle(depth, depthStride, x1, y1, x2, y2, &tx[i], &ty[i], &tz[i], comp);
stats[(int)result]++;
}
gpuStats.numDepthRasterCulls += culled;
gpuStats.numDepthRasterPrims += count / 3;
gpuStats.numDepthRasterBackface += stats[(int)TriangleResult::Backface];
gpuStats.numDepthRasterNoPixels += stats[(int)TriangleResult::NoPixels];
gpuStats.numDepthRasterTooSmall += stats[(int)TriangleResult::TooSmall];
gpuStats.numDepthRasterPrims += stats[(int)TriangleResult::OK];
break;
}
default:

8
GPU/GPU.h
View file

@ -110,7 +110,9 @@ struct GPUStatistics {
msProcessingDisplayLists = 0;
msRasterizingDepth = 0.0f;
numDepthRasterPrims = 0;
numDepthRasterCulls = 0;
numDepthRasterBackface = 0;
numDepthRasterNoPixels = 0;
numDepthRasterTooSmall = 0;
vertexGPUCycles = 0;
otherGPUCycles = 0;
}
@ -154,7 +156,9 @@ struct GPUStatistics {
int vertexGPUCycles;
int otherGPUCycles;
int numDepthRasterPrims;
int numDepthRasterCulls;
int numDepthRasterBackface;
int numDepthRasterNoPixels;
int numDepthRasterTooSmall;
// Flip count. Doesn't really belong here.
int numFlips;
};

6
GPU/GPUCommonHW.cpp
View file

@ -1776,7 +1776,7 @@ size_t GPUCommonHW::FormatGPUStatsCommon(char *buffer, size_t size) {
"replacer: tracks %d references, %d unique textures\n"
"Cpy: depth %d, color %d, reint %d, blend %d, self %d\n"
"GPU cycles: %d (%0.1f per vertex)\n"
"Depth raster: %0.2f ms, %d prim, %d prims culled\n%s",
"Depth raster: %0.2f ms, %d prim, %d nopix, %d small, %d backface\n%s",
gpuStats.msProcessingDisplayLists * 1000.0f,
gpuStats.numDrawSyncs,
gpuStats.numListSyncs,
@ -1815,7 +1815,9 @@ size_t GPUCommonHW::FormatGPUStatsCommon(char *buffer, size_t size) {
vertexAverageCycles,
gpuStats.msRasterizingDepth * 1000.0,
gpuStats.numDepthRasterPrims,
gpuStats.numDepthRasterCulls,
gpuStats.numDepthRasterNoPixels,
gpuStats.numDepthRasterTooSmall,
gpuStats.numDepthRasterBackface,
debugRecording_ ? "(debug-recording)" : ""
);
}