[d3d11] Fix up UAV clears for A8_UNORMmaintenance5

1 files changed, 10 insertions, 3 deletions

diff --git a/src/d3d11/d3d11_context.cpp b/src/d3d11/d3d11_context.cpp
index 21468988..977a403e 100644
--- a/src/d3d11/d3d11_context.cpp
+++ b/src/d3d11/d3d11_context.cpp
@@ -406,15 +406,22 @@ namespace dxvk {
 
     VkClearValue clearValue;
 
-    // R11G11B10 is a special case since there's no corresponding
-    // integer format with the same bit layout. Use R32 instead.
-    if (uavFormat == VK_FORMAT_B10G11R11_UFLOAT_PACK32) {
+    if (uavDesc.Format == DXGI_FORMAT_R11G11B10_FLOAT) {
+      // R11G11B10 is a special case since there's no corresponding
+      // integer format with the same bit layout. Use R32 instead.
       clearValue.color.uint32[0] = ((Values[0] & 0x7FF) <<  0)
                                  | ((Values[1] & 0x7FF) << 11)
                                  | ((Values[2] & 0x3FF) << 22);
       clearValue.color.uint32[1] = 0;
       clearValue.color.uint32[2] = 0;
       clearValue.color.uint32[3] = 0;
+    } else if (uavDesc.Format == DXGI_FORMAT_A8_UNORM) {
+      // We need to use R8_UINT to clear A8_UNORM images,
+      // so remap the alpha component to the red channel.
+      clearValue.color.uint32[0] = Values[3];
+      clearValue.color.uint32[1] = 0;
+      clearValue.color.uint32[2] = 0;
+      clearValue.color.uint32[3] = 0;
     } else {
       clearValue.color.uint32[0] = Values[0];
       clearValue.color.uint32[1] = Values[1];