It didn't change performance on Lightsmark or Nexuiz, which both used
DYNAMIC_DRAW buffers, but it was killing performance (40% CPU wasted pwriting
buffers) on a closed-source app we're looking at.
---
src/mesa/drivers/dri/intel/intel_buffer_objects.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/src/mesa/drivers/dri/intel/intel_buffer_objects.c
b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
index d2a0709..ef511e6 100644
--- a/src/mesa/drivers/dri/intel/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/intel/intel_buffer_objects.c
@@ -140,15 +140,11 @@ intel_bufferobj_data(struct gl_context * ctx,
intel_obj->sys_buffer = NULL;
if (size != 0) {
- if (usage == GL_DYNAMIC_DRAW
#ifdef I915
- /* On pre-965, stick VBOs in system memory, as we're always doing
- * swtnl with their contents anyway.
- */
- || target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER
-#endif
- )
- {
+ /* On pre-965, stick VBOs in system memory, as we're always doing
+ * swtnl with their contents anyway.
+ */
+ if (target == GL_ARRAY_BUFFER || target == GL_ELEMENT_ARRAY_BUFFER) {
intel_obj->sys_buffer = malloc(size);
if (intel_obj->sys_buffer != NULL) {
if (data != NULL)
@@ -156,6 +152,7 @@ intel_bufferobj_data(struct gl_context * ctx,
return true;
}
}
+#endif
intel_bufferobj_alloc_buffer(intel, intel_obj);
if (!intel_obj->buffer)
return false;
--
1.7.10
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