>From ARB_framebuffer_object:
If a buffer is specified in <mask> and does not exist in both the
read and draw framebuffers, the corresponding bit is silently
ignored.
---
src/mesa/main/fbobject.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c
index d094dd3..8496936 100644
--- a/src/mesa/main/fbobject.c
+++ b/src/mesa/main/fbobject.c
@@ -2603,6 +2603,10 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint
srcX1, GLint srcY1,
}
}
+ if (!mask) {
+ return;
+ }
+
ASSERT(ctx->Driver.BlitFramebuffer);
ctx->Driver.BlitFramebuffer(ctx,
srcX0, srcY0, srcX1, srcY1,
--
1.7.4.1
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