VideoCore: Initial Setup for the Resolution Scaler.

src/video_core/renderer_opengl/gl_texture_cache.cpp

@@ -849,6 +849,22 @@ void Image::CopyImageToBuffer(const VideoCommon::BufferImageCopy& copy, size_t b
     }
 }
 
+void Image::ScaleUp() {
+    if (True(flags & ImageFlagBits::Rescaled)) {
+        return;
+    }
+    flags |= ImageFlagBits::Rescaled;
+    UNIMPLEMENTED();
+}
+
+void Image::ScaleDown() {
+    if (False(flags & ImageFlagBits::Rescaled)) {
+        return;
+    }
+    flags &= ~ImageFlagBits::Rescaled;
+    UNIMPLEMENTED();
+}
+
 ImageView::ImageView(TextureCacheRuntime& runtime, const VideoCommon::ImageViewInfo& info,
                      ImageId image_id_, Image& image)
     : VideoCommon::ImageViewBase{info, image.info, image_id_}, views{runtime.null_image_views} {

src/video_core/renderer_opengl/gl_texture_cache.h

@@ -72,6 +72,8 @@ public:
                                  StateTracker& state_tracker);
     ~TextureCacheRuntime();
 
+    void Init() {}
+
     void Finish();
 
     ImageBufferMap UploadStagingBuffer(size_t size);
@@ -110,6 +112,8 @@ public:
 
     bool HasNativeASTC() const noexcept;
 
+    void TickFrame() {}
+
 private:
     struct StagingBuffers {
         explicit StagingBuffers(GLenum storage_flags_, GLenum map_flags_);
@@ -185,6 +189,10 @@ public:
         return gl_type;
     }
 
+    bool ScaleUp();
+
+    bool ScaleDown();
+
 private:
     void CopyBufferToImage(const VideoCommon::BufferImageCopy& copy, size_t buffer_offset);