diff options
| -rw-r--r-- | src/vulkan/device.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/src/vulkan/device.c b/src/vulkan/device.c index 1de60d4fc8e..51d729a6f49 100644 --- a/src/vulkan/device.c +++ b/src/vulkan/device.c @@ -3044,9 +3044,16 @@ anv_cmd_buffer_new_surface_state_bo(struct anv_cmd_buffer *cmd_buffer) */ anv_cmd_buffer_emit_state_base_address(cmd_buffer); - /* It seems like just changing the state base addresses isn't enough. - * Invalidating the cache seems to be enough to cause things to - * propagate. However, I'm not 100% sure what we're supposed to do. + /* The sampler unit caches SURFACE_STATE and RENDER_SURFACE_STATE entries, + * and the data port uses the same cache. When changing the Surface State + * Base Address, we need to flush the texture cache so that it can pick up + * on the new SURFACE_STATE's. From the Broadwell PRM, + * Shared Function > 3D Sampler > State > State Caching (page 96): + * + * Whenever the value of the Dynamic_State_Base_Addr, + * Surface_State_Base_Addr are altered, the L1 state cache + * must be invalidated to ensure the new surface or sampler state is + * fetched from system memory. */ anv_batch_emit(&cmd_buffer->batch, GEN8_PIPE_CONTROL, .TextureCacheInvalidationEnable = true); |