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Stencil write

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This commit is contained in:
Magnus Norddahl 2016-12-13 00:55:29 +01:00
parent 5277d4ae28
commit 022368d349
2 changed files with 76 additions and 2 deletions
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76
src/r_poly_triangle.cpp
View file

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

2
src/r_poly_triangle.h
View file

@ -290,11 +290,13 @@ class ScreenTriangle
{
public:
static void DrawFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
static void StencilFunc(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
ScreenTriangle();
void Setup(const TriDrawTriangleArgs *args, WorkerThreadData *thread);
void Draw(const TriDrawTriangleArgs *args);
void StencilWrite(const TriDrawTriangleArgs *args);
ScreenTriangleFullSpan *FullSpans;
ScreenTrianglePartialBlock *PartialBlocks;