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intel: flush fake front buffer if server is about to destroy it.

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Fixes piglit test "spec/!OpenGL 1.0/gl-1.0-front-invalidate-back"

Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Paul Berry 2013-05-31 09:45:49 -07:00
parent 447df5eaba
commit 9e3475b39a
1 changed files with 9 additions and 0 deletions
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9
src/mesa/drivers/dri/intel/intel_context.c
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@ -925,6 +925,15 @@ intel_query_dri2_buffers(struct intel_context *intel,
attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
attachments[i++] = intel_bits_per_pixel(front_rb);
} else if (front_rb && intel->front_buffer_dirty) {
/* We have pending front buffer rendering, but we aren't querying for a
* front buffer. If the front buffer we have is a fake front buffer,
* the X server is going to throw it away when it processes the query.
* So before doing the query, make sure all the pending drawing has
* landed in the real front buffer.
*/
intel_flush(&intel->ctx);
intel_flush_front(&intel->ctx);
}
if (back_rb) {