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softgpu: Add some comments and cleanup.

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2021-11-15 06:09:12 -08:00
parent babd63c644
commit f802c3bc6d
2 changed files with 13 additions and 6 deletions
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GPU/Software/Rasterizer.cpp
+9 -6
View File
@@ -1451,8 +1451,8 @@ void ClearRectangle(const VertexData &v0, const VertexData &v1)
minY = std::max(minY, (int)TransformUnit::DrawingToScreen(scissorTL).y);
maxY = std::max(0, std::min(maxY, (int)TransformUnit::DrawingToScreen(scissorBR).y + 16));
// We thread based on PSP fixed point screen coordinates, 16 here is for the 4 subpixel bits.
constexpr int MIN_LINES_PER_THREAD = 32 * 16;
const int w = (maxX - minX) / 16;
if (w <= 0)
return;
@@ -1461,12 +1461,13 @@ void ClearRectangle(const VertexData &v0, const VertexData &v1)
const u16 z = v1.screenpos.z;
const int stride = gstate.DepthBufStride();
// If both bytes of Z equal, we can just use memset directly which is faster.
if ((z & 0xFF) == (z >> 8)) {
ParallelRangeLoop(&g_threadManager, [=](int y1, int y2) {
ScreenCoords pprime(minX, y1, 0);
for (pprime.y = y1; pprime.y < y2; pprime.y += 16) {
DrawingCoords p = TransformUnit::ScreenToDrawing(pprime);
u16 *row = &depthbuf.as16[p.x + p.y * stride];
u16 *row = depthbuf.Get16Ptr(p.x, p.y, stride);
memset(row, z, w * 2);
}
}, minY, maxY, MIN_LINES_PER_THREAD);
@@ -1524,12 +1525,13 @@ void ClearRectangle(const VertexData &v0, const VertexData &v1)
const int stride = gstate.FrameBufStride();
if (gstate.FrameBufFormat() == GE_FORMAT_8888) {
const bool canMemsetColor = (new_color & 0xFF) == (new_color >> 8) && (new_color & 0xFFFF) == (new_color >> 16);
ParallelRangeLoop(&g_threadManager, [=](int y1, int y2) {
ScreenCoords pprime(minX, y1, 0);
for (pprime.y = y1; pprime.y < y2; pprime.y += 16) {
DrawingCoords p = TransformUnit::ScreenToDrawing(pprime);
if ((new_color & 0xFF) == (new_color >> 8) && (new_color & 0xFFFF) == (new_color >> 16)) {
u32 *row = &fb.as32[p.x + p.y * stride];
if (canMemsetColor) {
u32 *row = fb.Get32Ptr(p.x, p.y, stride);
memset(row, new_color, w * 4);
} else {
for (int x = 0; x < w; ++x) {
@@ -1539,12 +1541,13 @@ void ClearRectangle(const VertexData &v0, const VertexData &v1)
}
}, minY, maxY, MIN_LINES_PER_THREAD);
} else {
const bool canMemsetColor = (new_color16 & 0xFF) == (new_color16 >> 8);
ParallelRangeLoop(&g_threadManager, [=](int y1, int y2) {
ScreenCoords pprime(minX, y1, 0);
for (pprime.y = y1; pprime.y < y2; pprime.y += 16) {
DrawingCoords p = TransformUnit::ScreenToDrawing(pprime);
if ((new_color16 & 0xFF) == (new_color16 >> 8)) {
u16 *row = &fb.as16[p.x + p.y * stride];
if (canMemsetColor) {
u16 *row = fb.Get16Ptr(p.x, p.y, stride);
memset(row, new_color16, w * 2);
} else {
for (int x = 0; x < w; ++x) {
GPU/Software/SoftGpu.h
+4
View File
@@ -48,6 +48,10 @@ struct FormatBuffer {
inline u16 *Get16Ptr(int x, int y, int stride) {
return &as16[x + y * stride];
}
inline u32 *Get32Ptr(int x, int y, int stride) {
return &as32[x + y * stride];
}
};
class PresentationCommon;