Specifically, this ensures things like the front buffer actually exist. This
fixes piglt fbo/fbo-sys-blit and fd.o bug 35483. One concern is that
st_validate_state() looks expensive, are there any cheaper options?
---
src/mesa/state_tracker/st_cb_blit.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/mesa/state_tracker/st_cb_blit.c
b/src/mesa/state_tracker/st_cb_blit.c
index 6d02a7d..25c95c7 100644
--- a/src/mesa/state_tracker/st_cb_blit.c
+++ b/src/mesa/state_tracker/st_cb_blit.c
@@ -39,6 +39,7 @@
#include "st_texture.h"
#include "st_cb_blit.h"
#include "st_cb_fbo.h"
+#include "st_atom.h"
#include "util/u_blit.h"
@@ -75,6 +76,8 @@ st_BlitFramebuffer(struct gl_context *ctx,
struct gl_framebuffer *readFB = ctx->ReadBuffer;
struct gl_framebuffer *drawFB = ctx->DrawBuffer;
+ st_validate_state(st);
+
if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1,
&dstX0, &dstY0, &dstX1, &dstY1)) {
return; /* nothing to draw/blit */
--
1.7.2.5
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