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i965: Fix crash in do_blit_readpixels()

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Fixes a crash in Khronos CTS packed_pixels tests.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Anuj Phogat 2014-03-19 11:55:50 -07:00
parent 5388fc157e
commit d714b20eb4
1 changed files with 7 additions and 0 deletions
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7
src/mesa/drivers/dri/i965/intel_pixel_read.c
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@ -34,6 +34,7 @@
#include "main/bufferobj.h"
#include "main/readpix.h"
#include "main/state.h"
#include "main/glformats.h"
#include "brw_context.h"
#include "intel_screen.h"
@ -89,6 +90,12 @@ do_blit_readpixels(struct gl_context * ctx,
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
struct intel_renderbuffer *irb = intel_renderbuffer(rb);
/* Currently this function only supports reading from color buffers. */
if (!_mesa_is_color_format(format))
return false;
assert(irb != NULL);
if (ctx->_ImageTransferState ||
!_mesa_format_matches_format_and_type(irb->mt->format, format, type,
false)) {