Mesa (master): anv: Only flush descriptors used by the pipeline
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Fri Jan 22 17:30:22 UTC 2021
Module: Mesa
Branch: master
Commit: 18fc1dfea386b4c2235b477adde801ea2a393176
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=18fc1dfea386b4c2235b477adde801ea2a393176
Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date: Wed Jan 20 11:35:17 2021 -0600
anv: Only flush descriptors used by the pipeline
Previously, if we had a pipeline transition from something which used,
say, tessellation to something which didn't and we ended up with
tessellation descriptors dirty, we could end up re-emitting far more
than necessary. With this commit, we mask off unused stages so we only
update when necessary.
Tested-By: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8594>
---
src/intel/vulkan/genX_cmd_buffer.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c
index cb6ca7d3284..d04f47b2f5f 100644
--- a/src/intel/vulkan/genX_cmd_buffer.c
+++ b/src/intel/vulkan/genX_cmd_buffer.c
@@ -3594,9 +3594,12 @@ genX(cmd_buffer_flush_state)(struct anv_cmd_buffer *cmd_buffer)
}
#endif
+ uint32_t descriptors_dirty = cmd_buffer->state.descriptors_dirty &
+ pipeline->active_stages;
+
/* Render targets live in the same binding table as fragment descriptors */
if (cmd_buffer->state.gfx.dirty & ANV_CMD_DIRTY_RENDER_TARGETS)
- cmd_buffer->state.descriptors_dirty |= VK_SHADER_STAGE_FRAGMENT_BIT;
+ descriptors_dirty |= VK_SHADER_STAGE_FRAGMENT_BIT;
/* We emit the binding tables and sampler tables first, then emit push
* constants and then finally emit binding table and sampler table
@@ -3606,10 +3609,10 @@ genX(cmd_buffer_flush_state)(struct anv_cmd_buffer *cmd_buffer)
* 3DSTATE_BINDING_TABLE_POINTER_* for the push constants to take effect.
*/
uint32_t dirty = 0;
- if (cmd_buffer->state.descriptors_dirty) {
+ if (descriptors_dirty) {
dirty = flush_descriptor_sets(cmd_buffer,
&cmd_buffer->state.gfx.base,
- cmd_buffer->state.descriptors_dirty,
+ descriptors_dirty,
pipeline->shaders,
ARRAY_SIZE(pipeline->shaders));
cmd_buffer->state.descriptors_dirty &= ~dirty;
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