[vk] Exclude size equal alpha different copies from incompatible copy (#138)

Should fix bugs in Splatoon 2 and TotK

Co-authored-by: Maufeat <sahyno1996@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/138
Co-authored-by: JPikachu <jpikachu@eden-emu.dev>
Co-committed-by: JPikachu <jpikachu@eden-emu.dev>

2 files changed, 13 insertions, 2 deletions

diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.cpp b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
index 6272d6231a..9259639107 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -1368,8 +1371,7 @@ void TextureCacheRuntime::CopyImage(Image& dst, Image& src,
                                     std::span<const VideoCommon::ImageCopy> copies) {
     // As per the size-compatible formats section of vulkan, copy manually via ReinterpretImage
     // these images that aren't size-compatible
-    if (HasAlpha(src.info.format) != HasAlpha(dst.info.format) ||
-        BytesPerBlock(src.info.format) != BytesPerBlock(dst.info.format)) {
+    if (BytesPerBlock(src.info.format) != BytesPerBlock(dst.info.format)) {
         auto oneCopy = VideoCommon::ImageCopy{
             .src_offset = VideoCommon::Offset3D(0, 0, 0),
             .dst_offset = VideoCommon::Offset3D(0, 0, 0),
diff --git a/src/video_core/surface.cpp b/src/video_core/surface.cpp
index c791bfa4e4..1998849e84 100644
--- a/src/video_core/surface.cpp
+++ b/src/video_core/surface.cpp
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2014 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -263,6 +266,12 @@ bool HasAlpha(PixelFormat pixel_format) {
         case PixelFormat::B8G8R8A8_SRGB:
         case PixelFormat::BC1_RGBA_SRGB:
         case PixelFormat::A4B4G4R4_UNORM:
+        case PixelFormat::BC2_SRGB:
+        case PixelFormat::BC2_UNORM:
+        case PixelFormat::BC3_SRGB:
+        case PixelFormat::BC3_UNORM:
+        case PixelFormat::BC7_SRGB:
+        case PixelFormat::BC7_UNORM:
             return true;
         default:
             return false;