[Mesa-dev] [PATCH 2/8] mesa: Fix off-by-one error in transform feedback size check.

[Paul Berry]

In _mesa_BindBufferRange(), we need to verify that the offset and size
specified by the client do not exceed the size of the underlying
buffer.  We were accidentally doing this check using ">=" rather than
">", so we were generating a bogus error if the client specified an
offset and size that fit exactly in the underlying buffer.
---
 src/mesa/main/transformfeedback.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 799245d..78ca64d 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -486,7 +486,7 @@ _mesa_BindBufferRange(GLenum target, GLuint index,
       return;
    }
 
-   if (offset + size >= bufObj->Size) {
+   if (offset + size > bufObj->Size) {
       _mesa_error(ctx, GL_INVALID_VALUE,
                   "glBindBufferRange(offset + size %d > buffer size %d)",
 		  (int) (offset + size), (int) (bufObj->Size));
-- 
1.7.6.4