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meta: Don't do fragment color clamping in _mesa_meta_pbo_GetTexSubImage

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_mesa_meta_pbo_GetTexSubImage() uses _mesa_meta_BlitFrameBuffer(),
which will do fragment clamping if enabled. But fragment clamping
doesn't affect ReadPixels and GetTexImage.

Without this patch, piglit test arb_color_buffer_float-clear fails,
when forced to use the meta pbo path.

v2: Apply this fix to both glReadPixels and glGetTexImage.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
(cherry picked from commit ca4e17e03e)
This commit is contained in:
Anuj Phogat 2015-05-06 05:43:08 -07:00 • committed by Emil Velikov
parent 6321bf72be
commit 831bf63e6b
1 changed files with 5 additions and 0 deletions
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5
src/mesa/drivers/common/meta_tex_subimage.c
View file

@ -25,6 +25,7 @@
* Jason Ekstrand <jason.ekstrand@intel.com>
*/
#include "blend.h"
#include "bufferobj.h"
#include "buffers.h"
#include "fbobject.h"
@ -330,6 +331,10 @@ _mesa_meta_pbo_GetTexSubImage(struct gl_context *ctx, GLuint dims,
_mesa_meta_begin(ctx, ~(MESA_META_PIXEL_TRANSFER |
MESA_META_PIXEL_STORE));
/* GL_CLAMP_FRAGMENT_COLOR doesn't affect ReadPixels and GettexImage */
if (ctx->Extensions.ARB_color_buffer_float)
_mesa_ClampColor(GL_CLAMP_FRAGMENT_COLOR, GL_FALSE);
_mesa_GenFramebuffers(2, fbos);
if (tex_image && tex_image->TexObject->Target == GL_TEXTURE_1D_ARRAY) {