[vulkan] Adjustments on MSAA and BlitHelpers (#4287)

PR/Commit Owner: CamilleLaVey

This PR contains changes complementary to the MSAA refactor from some weeks ago, adds proper shader convert to depth, stencil for msaa and non msaa convertions; removes redundant helpers and unify paths on the resolve functions, just to make the readability and maintainability better; includes fixes for the blit operations on Nvidia, Intel/Windows (previously banned) and ensures Linux retain the fix without extra burden; fixes the QCOM driver bug on resolution upscaling on any games above x1 (includes turnip on A8xx series) and fixes crashes/ resolution upscaled bugs on certain games that used to have wrong viewporting effect on screen or directly device loss on Vulkan. Adds fixes for regressions caused by previous MSAA refactor on games as Fire Emblem: Engage.

Special Thanks

1.- Big Smolio (@Gidoly)

Co-authored-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4287
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Samuel <lizzie@eden-emu.dev>

1 files changed, 2 insertions, 6 deletions

diff --git a/src/video_core/texture_cache/image_base.cpp b/src/video_core/texture_cache/image_base.cpp
index 077df28fb3..9b0f33220d 100644
--- a/src/video_core/texture_cache/image_base.cpp
+++ b/src/video_core/texture_cache/image_base.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
@@ -121,7 +121,7 @@ void ImageBase::InsertView(const ImageViewInfo& view_info, ImageViewId image_vie
     image_view_ids.push_back(image_view_id);
 }
 
-bool ImageBase::IsSafeDownload() const noexcept {
+bool ImageBase::IsSafeGpuCopy() const noexcept {
     // Skip images that were not modified from the GPU
     if (False(flags & ImageFlagBits::GpuModified)) {
         return false;
@@ -131,10 +131,6 @@ bool ImageBase::IsSafeDownload() const noexcept {
     if (True(flags & ImageFlagBits::CpuModified)) {
         return false;
     }
-    if (info.num_samples > 1) {
-        LOG_WARNING(HW_GPU, "MSAA image downloads are not implemented");
-        return false;
-    }
     return true;
 }