From d7d64f1091006fb6faa48705c53f19ff5c657bc8 Mon Sep 17 00:00:00 2001 From: Nanley Chery Date: Tue, 31 Jan 2017 12:23:18 -0800 Subject: [PATCH] anv/image: Allow HiZ on input attachment-capable depth/stencil images While an input attachment may only take on one of those two layouts, other depth/stencil attachments that use the same image may have HiZ-enabled layouts. Improves the average frame rate on a release candidate of a proprietary Vulkan benchmark by 9.94% over 3 runs on my SKL GT4. Signed-off-by: Nanley Chery Reviewed-by: Jason Ekstrand --- src/intel/vulkan/anv_image.c | 14 -------------- 1 file changed, 14 deletions(-) diff --git a/src/intel/vulkan/anv_image.c b/src/intel/vulkan/anv_image.c index 95ba12c928d..59f730c7c60 100644 --- a/src/intel/vulkan/anv_image.c +++ b/src/intel/vulkan/anv_image.c @@ -190,20 +190,6 @@ make_surface(const struct anv_device *dev, */ if (!(image->usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)) { /* It will never be used as an attachment, HiZ is pointless. */ - } else if (image->usage & VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT) { - /* From the 1.0.37 spec: - * - * "An attachment used as an input attachment and depth/stencil - * attachment must be in either VK_IMAGE_LAYOUT_GENERAL or - * VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL." - * - * It will never have a layout of - * VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL, so HiZ is - * currently pointless. If transfer operations learn to use the HiZ - * buffer, we can enable HiZ for VK_IMAGE_LAYOUT_GENERAL and support - * input attachments. - */ - anv_finishme("Implement HiZ for input attachments"); } else if (!env_var_as_boolean("INTEL_VK_HIZ", dev->info.gen >= 8)) { anv_finishme("Implement gen7 HiZ"); } else if (vk_info->mipLevels > 1) {