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swr: [rasterizer core] update trivial accept test conditions 

enable/disable raster tile trivial accept test based on scissor enable trait.
Can be optimized further.

Signed-off-by: Tim Rowley <timothy.o.rowley@intel.com>
This commit is contained in:
Tim Rowley 2016-08-02 15:07:24 -06:00
parent 7cf187d08a
commit 6624e01114
1 changed files with 6 additions and 3 deletions
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9
src/gallium/drivers/swr/rasterizer/core/rasterizer.cpp
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@ -729,7 +729,7 @@ INLINE bool TrivialRejectTest<NoEdgesValidT>(const int, const int, const int)
/// @brief Primary function template for TrivialAcceptTest. Always returns
/// false, since it will only be called for degenerate tris, and as such
/// will never cover the entire raster tile
template <typename ValidEdgeMaskT>
template <typename ScissorEnableT>
INLINE bool TrivialAcceptTest(const int, const int, const int)
{
return false;
@ -739,7 +739,7 @@ INLINE bool TrivialAcceptTest(const int, const int, const int)
/// @brief AllEdgesValidT specialization for TrivialAcceptTest. Test all
/// edge masks for a fully covered raster tile
template <>
INLINE bool TrivialAcceptTest<AllEdgesValidT>(const int mask0, const int mask1, const int mask2)
INLINE bool TrivialAcceptTest<std::false_type>(const int mask0, const int mask1, const int mask2)
{
return ((mask0 & mask1 & mask2) == 0xf);
};
@ -1166,7 +1166,10 @@ void RasterizeTriangle(DRAW_CONTEXT* pDC, uint32_t workerId, uint32_t macroTile,
UpdateEdgeMasksInnerConservative<RT, typename RT::ValidEdgeMaskT, typename RT::InputCoverageT>
(vEdgeTileBbox, vEdgeFix16, vAi, vBi, mask0, mask1, mask2);
if (TrivialAcceptTest<typename RT::ValidEdgeMaskT>(mask0, mask1, mask2))
// @todo Make this a bit smarter to allow use of trivial accept when:
// 1) scissor/vp intersection rect is raster tile aligned
// 2) raster tile is entirely within scissor/vp intersection rect
if (TrivialAcceptTest<typename RT::RasterizeScissorEdgesT>(mask0, mask1, mask2))
{
// trivial accept, all 4 corners of all 3 edges are negative
// i.e. raster tile completely inside triangle