mirror of https://github.com/ZDoom/gzdoom.git
Add stencil testing
This commit is contained in:
Magnus Norddahl
parent
b0f3686bc6
commit
bee363d79a
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@ -35,6 +35,7 @@
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#include "v_palette.h"
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#include "r_data/colormaps.h"
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#include "r_poly_triangle.h"
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#include <immintrin.h>
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int PolyTriangleDrawer::viewport_x;
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int PolyTriangleDrawer::viewport_y;
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@ -572,7 +573,7 @@ void PolyVertexBuffer::Clear()
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}
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/////////////////////////////////////////////////////////////////////////////
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#if 1
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#if 0
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void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *thread)
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{
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const TriVertex &v1 = *args->v1;
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@ -580,6 +581,11 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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const TriVertex &v3 = *args->v3;
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int clipright = args->clipright;
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int clipbottom = args->clipbottom;
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int stencilPitch = args->stencilPitch;
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uint8_t *stencilValues = args->stencilValues;
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uint32_t *stencilMasks = args->stencilMasks;
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uint8_t stencilTestValue = args->stencilTestValue;
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ScreenTriangleFullSpan *span = FullSpans;
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ScreenTrianglePartialBlock *partial = PartialBlocks;
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@ -678,12 +684,27 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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mAxx = _mm_sub_epi32(mAxx, _mm_slli_epi32(mDY12, 7));
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mBxx = _mm_sub_epi32(mBxx, _mm_slli_epi32(mDY23, 7));
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mCxx = _mm_sub_epi32(mCxx, _mm_slli_epi32(mDY31, 7));
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// Stencil test the whole block, if possible
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int block = x / 8 + 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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bool blockIsSingleStencil = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
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bool skipBlock = blockIsSingleStencil && ((*stencilBlockMask) & 0xff) != stencilTestValue;
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// Skip block when outside an edge
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if (a == 0 || b == 0 || c == 0) continue;
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if (a == 0 || b == 0 || c == 0 || skipBlock)
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{
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if (span->Length != 0)
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{
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span++;
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span->Length = 0;
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}
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continue;
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}
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// Accept whole block when totally covered
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if (a == 0xffff && b == 0xffff && c == 0xffff && x + q <= clipright && y + q <= clipbottom)
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if (a == 0xffff && b == 0xffff && c == 0xffff && x + q <= clipright && y + q <= clipbottom && blockIsSingleStencil)
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{
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if (span->Length != 0)
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{
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@ -713,9 +734,10 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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int CX2 = CY2;
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int CX3 = CY3;
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for (int ix = x; ix < x + q; ix++)
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for (int ix = 0; ix < q; ix++)
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{
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && ix < clipright && iy < clipbottom);
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bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
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mask0 <<= 1;
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mask0 |= (uint32_t)covered;
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@ -735,9 +757,10 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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int CX2 = CY2;
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int CX3 = CY3;
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for (int ix = x; ix < x + q; ix++)
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for (int ix = 0; ix < q; ix++)
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{
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && ix < clipright && iy < clipbottom);
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bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
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mask1 <<= 1;
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mask1 |= (uint32_t)covered;
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@ -797,6 +820,11 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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int clipright = args->clipright;
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int clipbottom = args->clipbottom;
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int stencilPitch = args->stencilPitch;
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uint8_t *stencilValues = args->stencilValues;
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uint32_t *stencilMasks = args->stencilMasks;
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uint8_t stencilTestValue = args->stencilTestValue;
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ScreenTriangleFullSpan *span = FullSpans;
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ScreenTrianglePartialBlock *partial = PartialBlocks;
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span->Length = 0;
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@ -889,8 +917,15 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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bool c11 = C3 + DX31 * y1 - DY31 * x1 > 0;
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int c = (c00 << 0) | (c10 << 1) | (c01 << 2) | (c11 << 3);
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// Stencil test the whole block, if possible
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int block = x / 8 + 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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bool blockIsSingleStencil = ((*stencilBlockMask) & 0xffffff00) == 0xffffff00;
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bool skipBlock = blockIsSingleStencil && ((*stencilBlockMask) & 0xff) != stencilTestValue;
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// Skip block when outside an edge
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if (a == 0x0 || b == 0x0 || c == 0x0)
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if (a == 0 || b == 0 || c == 0 || skipBlock)
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{
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if (span->Length != 0)
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{
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@ -899,9 +934,9 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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}
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continue;
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}
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// Accept whole block when totally covered
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if (a == 0xF && b == 0xF && c == 0xF && x + q <= clipright && y + q <= clipbottom)
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if (a == 0xf && b == 0xf && c == 0xf && x + q <= clipright && y + q <= clipbottom && blockIsSingleStencil)
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{
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if (span->Length != 0)
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{
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@ -916,46 +951,73 @@ void ScreenTriangle::Setup(const TriDrawTriangleArgs *args, WorkerThreadData *th
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}
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else // Partially covered block
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{
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x0 = x << 4;
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x1 = (x + q - 1) << 4;
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int CY1 = C1 + DX12 * y0 - DY12 * x0;
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int CY2 = C2 + DX23 * y0 - DY23 * x0;
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int CY3 = C3 + DX31 * y0 - DY31 * x0;
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uint64_t mask = 0;
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for (int iy = 0; iy < q; iy++)
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uint32_t mask0 = 0;
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uint32_t mask1 = 0;
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for (int iy = 0; iy < 4; iy++)
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{
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int CX1 = CY1;
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int CX2 = CY2;
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int CX3 = CY3;
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for (int ix = x; ix < x + q; ix++)
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for (int ix = 0; ix < q; ix++)
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{
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && ix < clipright && iy < clipbottom);
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mask <<= 1;
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mask |= (uint64_t)covered;
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bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
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mask0 <<= 1;
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mask0 |= (uint32_t)covered;
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CX1 -= FDY12;
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CX2 -= FDY23;
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CX3 -= FDY31;
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}
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CY1 += FDX12;
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CY2 += FDX23;
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CY3 += FDX31;
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}
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if (mask != 0xffffffffffffffffLL)
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for (int iy = 4; iy < q; iy++)
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{
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if (span->Length != 0)
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int CX1 = CY1;
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int CX2 = CY2;
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int CX3 = CY3;
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for (int ix = 0; ix < q; ix++)
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{
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bool passStencilTest = blockIsSingleStencil || stencilBlock[ix + iy * q] == stencilTestValue;
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bool covered = (CX1 > 0 && CX2 > 0 && CX3 > 0 && (x + ix) < clipright && (y + iy) < clipbottom && passStencilTest);
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mask1 <<= 1;
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mask1 |= (uint32_t)covered;
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CX1 -= FDY12;
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CX2 -= FDY23;
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CX3 -= FDY31;
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}
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CY1 += FDX12;
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CY2 += FDX23;
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CY3 += FDX31;
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}
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if (mask0 != 0xffffffff || mask1 != 0xffffffff)
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{
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if (span->Length > 0)
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{
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span++;
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span->Length = 0;
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}
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partial->X = x;
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partial->Y = y;
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partial->Mask0 = (uint32_t)(mask >> 32);
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partial->Mask1 = (uint32_t)mask;
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partial->Mask0 = mask0;
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partial->Mask1 = mask1;
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partial++;
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}
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else if (span->Length != 0)
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