[Mesa-dev] [PATCH] mesa: generate error if pbo offset is not aligned with the size of specified type

[Yuanhan Liu]

Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
---
 src/mesa/main/pbo.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/pbo.c b/src/mesa/main/pbo.c
index 4e7e6f9..4611c5d 100644
--- a/src/mesa/main/pbo.c
+++ b/src/mesa/main/pbo.c
@@ -82,6 +82,11 @@ _mesa_validate_pbo_access(GLuint dimensions,
    } else {
       offset = ptr;
       sizeAddr = ((const GLubyte *) 0) + pack->BufferObj->Size;
+      if (_mesa_sizeof_type(type) &&
+          ((GLuint)offset % _mesa_sizeof_type(type))) {
+         /* offset not aligned with type size */
+         return GL_FALSE;
+      }
    }
 
    if (sizeAddr == 0)
-- 
1.7.4.4