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allow blit path for read pixels if pack->alignment isn't 1.

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pack->alignment doesn't matter usually if the image is sufficiently aligned
anyway. Speeds up some tests/readrate cases by a factor of 100 (since
the pack->alignment default which noone ever bothers to change is 4).
This commit is contained in:
Roland Scheidegger
2007-07-16 11:51:08 +02:00
parent 99c7e38d83
commit d69cae95a0
1 changed files with 7 additions and 6 deletions
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src/mesa/drivers/dri/i915tex/intel_pixel_read.c
+7 -6
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@@ -203,17 +203,18 @@ do_blit_readpixels(GLcontext * ctx,
return GL_FALSE;
}
if (pack->Alignment != 1 || pack->SwapBytes || pack->LsbFirst) {
if (INTEL_DEBUG & DEBUG_PIXEL)
_mesa_printf("%s: bad packing params\n", __FUNCTION__);
return GL_FALSE;
}
if (pack->RowLength > 0)
rowLength = pack->RowLength;
else
rowLength = width;
if (((rowLength * src->cpp) % pack->Alignment) ||
pack->SwapBytes || pack->LsbFirst) {
if (INTEL_DEBUG & DEBUG_PIXEL)
_mesa_printf("%s: bad packing params\n", __FUNCTION__);
return GL_FALSE;
}
if (pack->Invert) {
if (INTEL_DEBUG & DEBUG_PIXEL)
_mesa_printf("%s: MESA_PACK_INVERT not done yet\n", __FUNCTION__);