diff options
| -rw-r--r-- | src/intel/vulkan/genX_blorp_exec.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/intel/vulkan/genX_blorp_exec.c b/src/intel/vulkan/genX_blorp_exec.c index 1d07fd7b5ea..7f22b677ea6 100644 --- a/src/intel/vulkan/genX_blorp_exec.c +++ b/src/intel/vulkan/genX_blorp_exec.c @@ -115,8 +115,21 @@ blorp_alloc_vertex_buffer(struct blorp_batch *batch, uint32_t size, struct blorp_address *addr) { struct anv_cmd_buffer *cmd_buffer = batch->driver_batch; + + /* From the Skylake PRM, 3DSTATE_VERTEX_BUFFERS: + * + * "The VF cache needs to be invalidated before binding and then using + * Vertex Buffers that overlap with any previously bound Vertex Buffer + * (at a 64B granularity) since the last invalidation. A VF cache + * invalidate is performed by setting the "VF Cache Invalidation Enable" + * bit in PIPE_CONTROL." + * + * This restriction first appears in the Skylake PRM but the internal docs + * also list it as being an issue on Broadwell. In order to avoid this + * problem, we align all vertex buffer allocations to 64 bytes. + */ struct anv_state vb_state = - anv_cmd_buffer_alloc_dynamic_state(cmd_buffer, size, 16); + anv_cmd_buffer_alloc_dynamic_state(cmd_buffer, size, 64); *addr = (struct blorp_address) { .buffer = &cmd_buffer->device->dynamic_state_block_pool.bo, |