[vk] Toggle for LDR degradation with sRGB

src/android/app/src/main/res/values/strings.xml

@@ -954,7 +954,11 @@
 
     <!-- Force Identity Swizzle -->
     <string name="force_identity_swizzle">Force Identity Swizzle</string>
-    <string name="force_identity_swizzle_description">Forces identity component swizzle for storage and input attachment images. Required by Vulkan spec. Disable only for debugging driver issues.</string>
+    <string name="force_identity_swizzle_description">Forces identity component swizzle for storage and input attachment images. Required by Vulkan spec. Disable if graphical issues.</string>
+
+    <!-- Force LDR to sRGB -->
+    <string name="force_ldr_to_srgb">Force LDR to sRGB</string>
+    <string name="force_ldr_to_srgb_description">Converts LDR texture formats to sRGB for proper gamma correction. Fixes washed out colors on Adreno GPUs. Enable if textures look too bright or desaturated.</string>
 
     <!-- VRAM Usage Mode -->
     <string name="vram_usage_mode">VRAM Usage Mode</string>

src/common/settings.h

@@ -461,6 +461,10 @@ struct Values {
                                                      false,
                                                      "force_identity_swizzle",
                                                      Category::RendererAdvanced};
+    SwitchableSetting<bool> force_ldr_to_srgb{linkage,
+                                               false,
+                                               "force_ldr_to_srgb",
+                                               Category::RendererAdvanced};
     SwitchableSetting<VramUsageMode, true> vram_usage_mode{linkage,
                                                            VramUsageMode::Conservative,
                                                            "vram_usage_mode",

src/qt_common/config/shared_translation.cpp

@@ -204,8 +204,13 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QObject* parent)
     INSERT(Settings,
            force_identity_swizzle,
            tr("Force Identity Swizzle"),
-           tr("Forces identity component swizzle for storage and input attachment images.\n"
+           tr("Forces identity component swizzle for storage and input attachment images. "
               "Required by Vulkan spec. Disable only for debugging driver issues."));
+    INSERT(Settings,
+           force_ldr_to_srgb,
+           tr("Force LDR Formats to sRGB"),
+           tr("Converts LDR texture formats (RGBA8_UNORM, A2B10G10R10_UNORM) to sRGB variants. "
+              "Fixes gamma correction issues on some games. Enable for correct colors on Adreno GPUs."));
     INSERT(Settings,
            use_disk_shader_cache,
            tr("Use persistent pipeline cache"),

src/video_core/renderer_vulkan/maxwell_to_vk.cpp

@@ -241,6 +241,18 @@ FormatInfo SurfaceFormat(const Device& device, FormatType format_type, bool with
                          PixelFormat pixel_format) {
     ASSERT(static_cast<size_t>(pixel_format) < std::size(tex_format_tuples));
     FormatTuple tuple = tex_format_tuples[static_cast<size_t>(pixel_format)];
+    
+    // Force LDR formats to sRGB when toggle is enabled (fixes gamma on Adreno GPUs)
+    if (Settings::values.force_ldr_to_srgb.GetValue() && !with_srgb) {
+        if (pixel_format == PixelFormat::A8B8G8R8_UNORM) {
+            tuple.format = VK_FORMAT_A8B8G8R8_SRGB_PACK32;
+            with_srgb = true; // Ensure we use sRGB variant
+        } else if (pixel_format == PixelFormat::A2B10G10R10_UNORM) {
+            // A2B10G10R10 doesn't have sRGB variant in Vulkan, keep as UNORM
+            // The gamma correction will be handled by shaders if needed
+        }
+    }
+    
     // Transcode on hardware that doesn't support ASTC natively
     if (!device.IsOptimalAstcSupported() && VideoCore::Surface::IsPixelFormatASTC(pixel_format)) {
         const bool is_srgb = with_srgb && VideoCore::Surface::IsPixelFormatSRGB(pixel_format);