[Mesa-dev] [PATCH 17/22] anv: Use blorp for ClearAttachments

Pohjolainen, Topi topi.pohjolainen at gmail.com
Wed Oct 12 09:26:05 UTC 2016


On Fri, Oct 07, 2016 at 09:41:15PM -0700, Jason Ekstrand wrote:
> Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
> ---
>  src/intel/vulkan/anv_blorp.c      | 113 ++++++++++++++++++++++++++++++++++++++
>  src/intel/vulkan/anv_meta_clear.c |  24 --------
>  2 files changed, 113 insertions(+), 24 deletions(-)
> 
> diff --git a/src/intel/vulkan/anv_blorp.c b/src/intel/vulkan/anv_blorp.c
> index 546737b..4279f62 100644
> --- a/src/intel/vulkan/anv_blorp.c
> +++ b/src/intel/vulkan/anv_blorp.c
> @@ -870,6 +870,119 @@ void anv_CmdClearDepthStencilImage(
>  }
>  
>  static void
> +clear_color_attachment(struct anv_cmd_buffer *cmd_buffer,
> +                       struct blorp_batch *batch,
> +                       const VkClearAttachment *attachment,
> +                       uint32_t rectCount, const VkClearRect *pRects)
> +{
> +   const struct anv_framebuffer *fb = cmd_buffer->state.framebuffer;
> +   const struct anv_subpass *subpass = cmd_buffer->state.subpass;
> +   const uint32_t att = attachment->colorAttachment;
> +   const struct anv_image_view *iview =
> +      fb->attachments[subpass->color_attachments[att]];
> +   const struct anv_image *image = iview->image;
> +
> +   struct blorp_surf surf;
> +   get_blorp_surf_for_anv_image(image, VK_IMAGE_ASPECT_COLOR_BIT, &surf);
> +
> +   union isl_color_value clear_color;
> +   memcpy(clear_color.u32, attachment->clearValue.color.uint32,
> +          sizeof(clear_color.u32));
> +
> +   static const bool color_write_disable[4] = { false, false, false, false };
> +
> +   for (uint32_t r = 0; r < rectCount; ++r) {
> +      const VkOffset2D offset = pRects[r].rect.offset;
> +      const VkExtent2D extent = pRects[r].rect.extent;
> +      blorp_clear(batch, &surf, iview->isl.format, iview->isl.swizzle,
> +                  iview->isl.base_level,
> +                  iview->isl.base_array_layer + pRects[r].baseArrayLayer,

I'm not that familiar with vulkan yet and looking emit_color_clear() does not
directly tell me if "pRects[r].baseArrayLayer" is relative to the view base
layer. If that is the case then this patch looks good to me:

Reviewed-by: Topi Pohjolainen <topi.pohjolainen at intel.com>

> +                  pRects[r].layerCount,
> +                  offset.x, offset.y,
> +                  offset.x + extent.width, offset.y + extent.height,
> +                  clear_color, color_write_disable);
> +   }
> +}
> +
> +static void
> +clear_depth_stencil_attachment(struct anv_cmd_buffer *cmd_buffer,
> +                               struct blorp_batch *batch,
> +                               const VkClearAttachment *attachment,
> +                               uint32_t rectCount, const VkClearRect *pRects)
> +{
> +   const struct anv_framebuffer *fb = cmd_buffer->state.framebuffer;
> +   const struct anv_subpass *subpass = cmd_buffer->state.subpass;
> +   const struct anv_image_view *iview =
> +      fb->attachments[subpass->depth_stencil_attachment];
> +   const struct anv_image *image = iview->image;
> +
> +   bool clear_depth = attachment->aspectMask & VK_IMAGE_ASPECT_DEPTH_BIT;
> +   bool clear_stencil = attachment->aspectMask & VK_IMAGE_ASPECT_STENCIL_BIT;

These two could be const.

> +
> +   struct blorp_surf depth, stencil;
> +   if (clear_depth) {
> +      get_blorp_surf_for_anv_image(image, VK_IMAGE_ASPECT_DEPTH_BIT,
> +                                   &depth);
> +   } else {
> +      memset(&depth, 0, sizeof(depth));
> +   }
> +
> +   if (clear_stencil) {
> +      get_blorp_surf_for_anv_image(image, VK_IMAGE_ASPECT_STENCIL_BIT,
> +                                   &stencil);
> +   } else {
> +      memset(&stencil, 0, sizeof(stencil));
> +   }
> +
> +   for (uint32_t r = 0; r < rectCount; ++r) {
> +      const VkOffset2D offset = pRects[r].rect.offset;
> +      const VkExtent2D extent = pRects[r].rect.extent;
> +      VkClearDepthStencilValue value = attachment->clearValue.depthStencil;
> +      blorp_clear_depth_stencil(batch, &depth, &stencil,
> +                                iview->isl.base_level,
> +                                iview->isl.base_array_layer +
> +                                   pRects[r].baseArrayLayer,
> +                                pRects[r].layerCount,
> +                                offset.x, offset.y,
> +                                offset.x + extent.width,
> +                                offset.y + extent.height,
> +                                clear_depth, value.depth,
> +                                clear_stencil, value.stencil);
> +   }
> +}
> +
> +void anv_CmdClearAttachments(
> +    VkCommandBuffer                             commandBuffer,
> +    uint32_t                                    attachmentCount,
> +    const VkClearAttachment*                    pAttachments,
> +    uint32_t                                    rectCount,
> +    const VkClearRect*                          pRects)
> +{
> +   ANV_FROM_HANDLE(anv_cmd_buffer, cmd_buffer, commandBuffer);
> +
> +   /* Because this gets called within a render pass, we tell blorp not to
> +    * trash our depth and stencil buffers.
> +    */
> +   struct blorp_batch batch;
> +   blorp_batch_init(&cmd_buffer->device->blorp, &batch, cmd_buffer,
> +                    BLORP_BATCH_NO_EMIT_DEPTH_STENCIL);
> +
> +   for (uint32_t a = 0; a < attachmentCount; ++a) {
> +      if (pAttachments[a].aspectMask == VK_IMAGE_ASPECT_COLOR_BIT) {
> +         clear_color_attachment(cmd_buffer, &batch,
> +                                &pAttachments[a],
> +                                rectCount, pRects);
> +      } else {
> +         clear_depth_stencil_attachment(cmd_buffer, &batch,
> +                                        &pAttachments[a],
> +                                        rectCount, pRects);
> +      }
> +   }
> +
> +   blorp_batch_finish(&batch);
> +}
> +
> +static void
>  resolve_image(struct blorp_batch *batch,
>                const struct anv_image *src_image,
>                uint32_t src_level, uint32_t src_layer,
> diff --git a/src/intel/vulkan/anv_meta_clear.c b/src/intel/vulkan/anv_meta_clear.c
> index ce7f8a7..6802229 100644
> --- a/src/intel/vulkan/anv_meta_clear.c
> +++ b/src/intel/vulkan/anv_meta_clear.c
> @@ -751,27 +751,3 @@ anv_cmd_buffer_clear_subpass(struct anv_cmd_buffer *cmd_buffer)
>  
>     meta_clear_end(&saved_state, cmd_buffer);
>  }
> -
> -void anv_CmdClearAttachments(
> -    VkCommandBuffer                             commandBuffer,
> -    uint32_t                                    attachmentCount,
> -    const VkClearAttachment*                    pAttachments,
> -    uint32_t                                    rectCount,
> -    const VkClearRect*                          pRects)
> -{
> -   ANV_FROM_HANDLE(anv_cmd_buffer, cmd_buffer, commandBuffer);
> -   struct anv_meta_saved_state saved_state;
> -
> -   meta_clear_begin(&saved_state, cmd_buffer);
> -
> -   /* FINISHME: We can do better than this dumb loop. It thrashes too much
> -    * state.
> -    */
> -   for (uint32_t a = 0; a < attachmentCount; ++a) {
> -      for (uint32_t r = 0; r < rectCount; ++r) {
> -         emit_clear(cmd_buffer, &pAttachments[a], &pRects[r]);
> -      }
> -   }
> -
> -   meta_clear_end(&saved_state, cmd_buffer);
> -}
> -- 
> 2.5.0.400.gff86faf
> 
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