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Stencil write
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parent
5277d4ae28
commit
022368d349
2 changed files with 76 additions and 2 deletions
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@ -93,6 +93,7 @@ void PolyTriangleDrawer::draw_arrays(const PolyDrawArgs &drawargs, TriDrawVarian
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{
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default:
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//case TriDrawVariant::DrawNormal: drawfunc = dest_bgra ? &ScreenTriangle::DrawFunc : llvm->TriDrawNormal8[bmode]; break;
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//case TriDrawVariant::Stencil: drawfunc = &ScreenTriangle::StencilFunc; break;
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case TriDrawVariant::DrawNormal: drawfunc = dest_bgra ? llvm->TriDrawNormal32[bmode] : llvm->TriDrawNormal8[bmode]; break;
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case TriDrawVariant::FillNormal: drawfunc = dest_bgra ? llvm->TriFillNormal32[bmode] : llvm->TriFillNormal8[bmode]; break;
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case TriDrawVariant::DrawSubsector: drawfunc = dest_bgra ? llvm->TriDrawSubsector32[bmode] : llvm->TriDrawSubsector8[bmode]; break;
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@ -825,6 +826,71 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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NumPartialBlocks = (int)(partial - PartialBlocks);
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}
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void ScreenTriangle::StencilWrite(const TriDrawTriangleArgs *args)
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{
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uint8_t *stencilValues = args->stencilValues;
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uint32_t *stencilMasks = args->stencilMasks;
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uint32_t stencilWriteValue = args->stencilWriteValue;
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uint32_t stencilPitch = args->stencilPitch;
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for (int i = 0; i < NumFullSpans; i++)
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{
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const auto &span = FullSpans[i];
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int block = span.X / 8 + span.Y / 8 * stencilPitch;
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uint8_t *stencilBlock = &stencilValues[block * 64];
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uint32_t *stencilBlockMask = &stencilMasks[block];
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int width = span.Length;
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for (int x = 0; x < width; x++)
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stencilBlockMask[x] = 0xffffff00 | stencilWriteValue;
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}
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for (int i = 0; i < NumPartialBlocks; i++)
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{
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const auto &block = PartialBlocks[i];
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uint32_t mask0 = block.Mask0;
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uint32_t mask1 = block.Mask1;
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int sblock = block.X / 8 + block.Y / 8 * stencilPitch;
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uint8_t *stencilBlock = &stencilValues[sblock * 64];
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uint32_t *stencilBlockMask = &stencilMasks[sblock];
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bool isSingleValue = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
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if (isSingleValue)
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{
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uint8_t value = (*stencilBlockMask) & 0xff;
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for (int v = 0; v < 64; v++)
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stencilBlock[v] = value;
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*stencilBlockMask = 0;
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}
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int count = 0;
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for (int v = 0; v < 32; v++)
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{
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if ((mask0 & (1 << 31)) || stencilBlock[v] == stencilWriteValue)
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{
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stencilBlock[v] = stencilWriteValue;
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count++;
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}
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mask0 <<= 1;
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}
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for (int v = 32; v < 64; v++)
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{
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if ((mask1 & (1 << 31)) || stencilBlock[v] == stencilWriteValue)
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{
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stencilBlock[v] = stencilWriteValue;
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count++;
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}
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mask1 <<= 1;
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}
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if (count == 64)
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*stencilBlockMask = 0xffffff00 | stencilWriteValue;
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}
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}
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float ScreenTriangle::FindGradientX(float x0, float y0, float x1, float y1, float x2, float y2, float c0, float c1, float c2)
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{
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float top = (c1 - c2) * (y0 - y2) - (c0 - c2) * (y1 - y2);
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@ -1078,14 +1144,20 @@ void ScreenTriangle::Draw(const TriDrawTriangleArgs *args)
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}
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}
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static ScreenTriangle triangle[8];
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void ScreenTriangle::DrawFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
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{
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static ScreenTriangle triangle[8];
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triangle[thread->core].Setup(args, thread);
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triangle[thread->core].Draw(args);
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}
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void ScreenTriangle::StencilFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
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{
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triangle[thread->core].Setup(args, thread);
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triangle[thread->core].StencilWrite(args);
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}
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ScreenTriangle::ScreenTriangle()
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{
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FullSpansBuffer.resize(MAXWIDTH / 8 * (MAXHEIGHT / 8));
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@ -290,11 +290,13 @@ class ScreenTriangle
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{
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public:
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static void DrawFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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static void StencilFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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ScreenTriangle();
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void Setup(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
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void Draw(const TriDrawTriangleArgs *args);
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void StencilWrite(const TriDrawTriangleArgs *args);
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ScreenTriangleFullSpan *FullSpans;
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ScreenTrianglePartialBlock *PartialBlocks;
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