gl_texture_cache: Avoid copying between images for different formats

Skip copies between images with different formats. Copies between
illegal formats (e.g. RG8UI and R16F) corrupt Nvidia's driver on Turing
devices and some of these are forbidden by ARB_copy_image.

As a temporary fix to avoid corrupting the driver, avoid copying these
images.

src/video_core/renderer_opengl/gl_texture_cache.cpp

@@ -538,14 +538,14 @@ void TextureCacheOpenGL::ImageCopy(Surface& src_surface, Surface& dst_surface,
                                    const VideoCommon::CopyParams& copy_params) {
     const auto& src_params = src_surface->GetSurfaceParams();
     const auto& dst_params = dst_surface->GetSurfaceParams();
-    if (src_params.type != dst_params.type) {
+    if (src_params.pixel_format != dst_params.pixel_format) {
         // A fallback is needed
         return;
     }
-    const auto src_handle = src_surface->GetTexture();
-    const auto src_target = src_surface->GetTarget();
-    const auto dst_handle = dst_surface->GetTexture();
-    const auto dst_target = dst_surface->GetTarget();
+    const GLuint src_handle = src_surface->GetTexture();
+    const GLenum src_target = src_surface->GetTarget();
+    const GLuint dst_handle = dst_surface->GetTexture();
+    const GLenum dst_target = dst_surface->GetTarget();
     glCopyImageSubData(src_handle, src_target, copy_params.source_level, copy_params.source_x,
                        copy_params.source_y, copy_params.source_z, dst_handle, dst_target,
                        copy_params.dest_level, copy_params.dest_x, copy_params.dest_y,