rsx: Improve image aspect tests

- Replace old format-based detection with proper aspect test.
  Explicit image aspect has been available for a long time, but older
  code was not updated.

rpcs3/Emu/RSX/GL/GLRenderTargets.h

@@ -76,15 +76,7 @@ namespace gl
 
 		bool is_depth_surface() const override
 		{
-			switch (get_internal_format())
-			{
-			case gl::texture::internal_format::depth16:
-			case gl::texture::internal_format::depth24_stencil8:
-			case gl::texture::internal_format::depth32f_stencil8:
-				return true;
-			default:
-				return false;
-			}
+			return !!(aspect() & gl::image_aspect::depth);
 		}
 
 		void release_ref(texture* t) const override

rpcs3/Emu/RSX/GL/GLTextureCache.h

@@ -413,15 +413,7 @@ namespace gl
 
 		bool is_depth_texture() const
 		{
-			switch (vram_texture->get_internal_format())
-			{
-			case gl::texture::internal_format::depth16:
-			case gl::texture::internal_format::depth24_stencil8:
-			case gl::texture::internal_format::depth32f_stencil8:
-				return true;
-			default:
-				return false;
-			}
+			return !!(vram_texture->aspect() & gl::image_aspect::depth);
 		}
 
 		bool has_compatible_format(gl::texture* tex) const

rpcs3/Emu/RSX/VK/VKTextureCache.h

@@ -346,16 +346,7 @@ namespace vk
 
 		bool is_depth_texture() const
 		{
-			switch (vram_texture->info.format)
-			{
-			case VK_FORMAT_D16_UNORM:
-			case VK_FORMAT_D32_SFLOAT:
-			case VK_FORMAT_D32_SFLOAT_S8_UINT:
-			case VK_FORMAT_D24_UNORM_S8_UINT:
-				return true;
-			default:
-				return false;
-			}
+			return !!(vram_texture->aspect() & VK_IMAGE_ASPECT_DEPTH_BIT);
 		}
 	};