GPU: Ensure texture resolves are at least 1x1.

src/xenia/gpu/texture_info.cc

@@ -93,6 +93,8 @@ bool TextureInfo::PrepareResolve(uint32_t physical_address,
   auto& info = *out_info;
   info.guest_address = physical_address;
   info.dimension = Dimension::k2D;
+  assert_true(width > 0);
+  assert_true(height > 0);
   info.width = width - 1;
   info.height = height - 1;
   info.texture_format = texture_format;

src/xenia/gpu/vulkan/vulkan_command_processor.cc

@@ -1012,8 +1012,8 @@ bool VulkanCommandProcessor::IssueCopy() {
   // Demand a resolve texture from the texture cache.
   TextureInfo texture_info;
   TextureInfo::PrepareResolve(copy_dest_base, copy_dest_format, resolve_endian,
-                              dest_logical_width, dest_logical_height,
-                              &texture_info);
+                              dest_logical_width,
+                              std::max(1u, dest_logical_height), &texture_info);
 
   auto texture =
       texture_cache_->DemandResolveTexture(texture_info, copy_dest_format);