Module: Mesa Branch: master Commit: 429e2ec324674ba8c3412b331da56d9a8808cd38 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=429e2ec324674ba8c3412b331da56d9a8808cd38
Author: Ilia Mirkin <[email protected]> Date: Thu Nov 24 13:27:48 2016 -0500 swr: [rasterizer core] supply proper clip distances to point sprites Large points become pairs of triangles when rasterized, so we must feed it three clip distances, one for each vertex. The clip distance is not subject to sprite coord replacement, so there's no interpolation of it. We just take its value and put it in the "z" component of the barycentric-ready plane equation. (We could also just cull it at an earlier point in time, but that would require larger changes.) Signed-off-by: Ilia Mirkin <[email protected]> Reviewed-by: Tim Rowley <[email protected]> --- src/gallium/drivers/swr/rasterizer/core/binner.cpp | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/src/gallium/drivers/swr/rasterizer/core/binner.cpp b/src/gallium/drivers/swr/rasterizer/core/binner.cpp index 1538020..d5f2e97 100644 --- a/src/gallium/drivers/swr/rasterizer/core/binner.cpp +++ b/src/gallium/drivers/swr/rasterizer/core/binner.cpp @@ -1185,9 +1185,15 @@ void BinPoints( if (rastState.clipDistanceMask) { uint32_t numClipDist = _mm_popcnt_u32(rastState.clipDistanceMask); - float one[2] = {1.0f, 1.0f}; - desc.pUserClipBuffer = (float*)pArena->Alloc(numClipDist * 2 * sizeof(float)); - ProcessUserClipDist<2>(pa, primIndex, rastState.clipDistanceMask, one, desc.pUserClipBuffer); + desc.pUserClipBuffer = (float*)pArena->Alloc(numClipDist * 3 * sizeof(float)); + float dists[8]; + float one = 1.0f; + ProcessUserClipDist<1>(pa, primIndex, rastState.clipDistanceMask, &one, dists); + for (uint32_t i = 0; i < numClipDist; i++) { + desc.pUserClipBuffer[3*i + 0] = 0.0f; + desc.pUserClipBuffer[3*i + 1] = 0.0f; + desc.pUserClipBuffer[3*i + 2] = dists[i]; + } } MacroTileMgr *pTileMgr = pDC->pTileMgr; _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
