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-rw-r--r--src/mesa/drivers/dri/intel/intel_buffer_objects.c4
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);