Mesa (master): swr/rast: Share vertex memory between VS input/output
Tim Rowley
torowley at kemper.freedesktop.org
Fri Jun 16 21:30:05 UTC 2017
Module: Mesa
Branch: master
Commit: b7eb86c617ee8f73b552dc64a6d776d26672c38f
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b7eb86c617ee8f73b552dc64a6d776d26672c38f
Author: Tim Rowley <timothy.o.rowley at intel.com>
Date: Wed Jun 7 13:16:15 2017 -0500
swr/rast: Share vertex memory between VS input/output
Removes large simdvertex stack allocation.
Vertex shader must ensure reads happen before writes.
Reviewed-by: Bruce Cherniak <bruce.cherniak at intel.com>
---
src/gallium/drivers/swr/rasterizer/core/frontend.cpp | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/src/gallium/drivers/swr/rasterizer/core/frontend.cpp b/src/gallium/drivers/swr/rasterizer/core/frontend.cpp
index 157a318009..902253b148 100644
--- a/src/gallium/drivers/swr/rasterizer/core/frontend.cpp
+++ b/src/gallium/drivers/swr/rasterizer/core/frontend.cpp
@@ -1727,11 +1727,7 @@ void ProcessDraw(
}
#else
- simdvertex vin;
SWR_VS_CONTEXT vsContext;
-
- vsContext.pVin = &vin;
-
SWR_FETCH_CONTEXT fetchInfo = { 0 };
fetchInfo.pStreams = &state.vertexBuffers[0];
@@ -1787,6 +1783,7 @@ void ProcessDraw(
}
simdvertex& vout = pa.GetNextVsOutput();
+ vsContext.pVin = &vout;
vsContext.pVout = &vout;
if (i < endVertex)
@@ -1794,7 +1791,7 @@ void ProcessDraw(
// 1. Execute FS/VS for a single SIMD.
AR_BEGIN(FEFetchShader, pDC->drawId);
- state.pfnFetchFunc(fetchInfo, vin);
+ state.pfnFetchFunc(fetchInfo, vout);
AR_END(FEFetchShader, 0);
// forward fetch generated vertex IDs to the vertex shader
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