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st/mesa: fix glReadBuffer(GL_NONE) segfault

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Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73956
Cc: 10.0 <mesa-stable@lists.freedesktop.org>
Tested-by: Ahmed Allam <ahmabdabd@hotmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit f7c118ffbf)
This commit is contained in:
Brian Paul 2014-01-23 09:47:34 -07:00 • committed by Carl Worth
parent b1694c9f87
commit 79ef990ef8
1 changed files with 2 additions and 1 deletions
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3
src/mesa/state_tracker/st_cb_fbo.c
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@ -648,7 +648,8 @@ st_ReadBuffer(struct gl_context *ctx, GLenum buffer)
(void) buffer;
/* add the renderbuffer on demand */
st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);
if (fb->_ColorReadBufferIndex >= 0)
st_manager_add_color_renderbuffer(st, fb, fb->_ColorReadBufferIndex);
}