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i965: Fix handling of MESA_pack_invert in blit (PBO) readpixels.

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Fixes piglit GL_MESA_pack_invert/readpixels and GPU hangs with glamor and
cairo-gl.

Cc: 10.0 9.2 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Eric Anholt
2013-12-23 12:11:25 -08:00
parent a4b222ac13
commit e186b927b8
1 changed files with 3 additions and 1 deletions
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src/mesa/drivers/dri/i965/intel_pixel_read.c
+3 -1
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@@ -106,13 +106,15 @@ do_blit_readpixels(struct gl_context * ctx,
/* Mesa flips the dst_stride for pack->Invert, but we want our mt to have a
* normal dst_stride.
*/
struct gl_pixelstore_attrib uninverted_pack = *pack;
if (pack->Invert) {
dst_stride = -dst_stride;
dst_flip = true;
uninverted_pack.Invert = false;
}
dst_offset = (GLintptr)pixels;
dst_offset += _mesa_image_offset(2, pack, width, height,
dst_offset += _mesa_image_offset(2, &uninverted_pack, width, height,
format, type, 0, 0, 0);
if (!_mesa_clip_copytexsubimage(ctx,