vulkan_ffv1: improve buffer barrier correctness for slice state

This is likely a nanooptimization, but its more correct.

Lynne committed 1 year ago

Commit 694ebe81 parent 6111aef1 file · +2 −3Browse files

Showing the changes to libavcodec (1 of 1 file). Show all

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         .srcStageMask = slice_state->stage,
         .dstStageMask = VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
         .srcAccessMask = slice_state->access,
-        .dstAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT |
+        .dstAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT,
-                         VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT,
         .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
         .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
         .buffer = slice_state->buf,
         .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
         .buffer = slice_state->buf,
         .offset = fp->slice_data_size*f->slice_count,
-        .size = slice_state->size - fp->slice_data_size*f->slice_count,
+        .size = f->slice_count*(fp->slice_state_size - fp->slice_data_size),
     };
     /* Input frame barrier */

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