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[d3d11] Using proper layout for depth textures read by shaders

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VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL works took, but
this may or may not improve performance.
This commit is contained in:
Philip Rebohle 2018-01-15 13:08:34 +01:00
parent 1a40a272bd
commit 0bb991a1fa
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GPG Key ID: C8CC613427A31C99
1 changed files with 7 additions and 2 deletions
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9
src/d3d11/d3d11_texture.cpp
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@ -30,6 +30,8 @@ namespace dxvk {
* \returns Optimized image layout
*/
static VkImageLayout OptimizeLayout(VkImageUsageFlags flags) {
const VkImageUsageFlags allFlags = flags;
// Filter out unnecessary flags. Transfer operations
// are handled by the backend in a transparent manner.
flags &= ~(VK_IMAGE_USAGE_TRANSFER_DST_BIT
@ -48,8 +50,11 @@ namespace dxvk {
// If the image is used for reading but not as a storage
// image, we can optimize the image for texture access
if (flags == VK_IMAGE_USAGE_SAMPLED_BIT)
return VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
if (flags == VK_IMAGE_USAGE_SAMPLED_BIT) {
return allFlags & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT
? VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL
: VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
}
// Otherwise, we have to stick with the default layout
return VK_IMAGE_LAYOUT_GENERAL;