intel: Correctly check for read-only mappings in intel_bufferobj_map_range

The old code was an obvious cut-and-paste fail from intel_bufferobj_map.

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Acked-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Ben Widawsky <[email protected]>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.c b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
index 7a0102b7226..16a56b03a2e 100644
--- a/src/mesa/drivers/dri/intel/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
@@ -374,7 +374,6 @@ intel_bufferobj_map_range(struct gl_context * ctx,
 {
    struct intel_context *intel = intel_context(ctx);
    struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
-   GLboolean read_only = (access == GL_READ_ONLY_ARB);
 
    assert(intel_obj);
 
@@ -386,6 +385,9 @@ intel_bufferobj_map_range(struct gl_context * ctx,
    obj->AccessFlags = access;
 
    if (intel_obj->sys_buffer) {
+      const bool read_only =
+	 (access & (GL_MAP_READ_BIT | GL_MAP_WRITE_BIT)) == GL_MAP_READ_BIT;
+
       if (!read_only && intel_obj->source)
 	 release_buffer(intel_obj);