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i965: Skip a bunch of IB BO refcount twiddling.

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Improves cairo performance on glamor by 1.64828% +/- 1.04742% (n=65).

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Eric Anholt
2014-04-06 11:16:48 -07:00
parent 3f9440cfbb
commit 9a5d19d680
1 changed files with 13 additions and 13 deletions
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src/mesa/drivers/dri/i965/brw_draw_upload.c
+13 -13
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@@ -813,7 +813,7 @@ static void brw_upload_indices(struct brw_context *brw)
struct gl_context *ctx = &brw->ctx;
const struct _mesa_index_buffer *index_buffer = brw->ib.ib;
GLuint ib_size;
drm_intel_bo *bo = NULL;
drm_intel_bo *old_bo = brw->ib.bo;
struct gl_buffer_object *bufferobj;
GLuint offset;
GLuint ib_type_size;
@@ -831,7 +831,7 @@ static void brw_upload_indices(struct brw_context *brw)
/* Get new bufferobj, offset:
*/
intel_upload_data(brw, index_buffer->ptr, ib_size, ib_type_size,
&bo, &offset);
&brw->ib.bo, &offset);
} else {
offset = (GLuint) (unsigned long) index_buffer->ptr;
@@ -849,13 +849,19 @@ static void brw_upload_indices(struct brw_context *brw)
bufferobj,
MAP_INTERNAL);
intel_upload_data(brw, map, ib_size, ib_type_size, &bo, &offset);
intel_upload_data(brw, map, ib_size, ib_type_size,
&brw->ib.bo, &offset);
ctx->Driver.UnmapBuffer(ctx, bufferobj, MAP_INTERNAL);
} else {
bo = intel_bufferobj_buffer(brw, intel_buffer_object(bufferobj),
offset, ib_size);
drm_intel_bo_reference(bo);
drm_intel_bo *bo =
intel_bufferobj_buffer(brw, intel_buffer_object(bufferobj),
offset, ib_size);
if (bo != brw->ib.bo) {
drm_intel_bo_unreference(brw->ib.bo);
brw->ib.bo = bo;
drm_intel_bo_reference(bo);
}
}
}
@@ -865,14 +871,8 @@ static void brw_upload_indices(struct brw_context *brw)
*/
brw->ib.start_vertex_offset = offset / ib_type_size;
if (brw->ib.bo != bo) {
drm_intel_bo_unreference(brw->ib.bo);
brw->ib.bo = bo;
if (brw->ib.bo != old_bo)
brw->state.dirty.brw |= BRW_NEW_INDEX_BUFFER;
} else {
drm_intel_bo_unreference(bo);
}
if (index_buffer->type != brw->ib.type) {
brw->ib.type = index_buffer->type;