Vulkan: Fix HDR blend for widgets/OSD text using gfx_widgets_visible()

Use gfx_widgets_visible() in the Vulkan HDR path so the SDR-to-HDR
composition pass also runs when widgets or OSD messages are visible,
not just when the menu or overlays are enabled. Fixes text and widget
rendering appearing washed out or invisible in Vulkan HDR mode.

Author: MajorPainTheCactus

gfx/drivers/vulkan.c

@@ -5159,8 +5159,19 @@ static bool vulkan_frame(void *data, const void *frame,
          end_main_pass = false;
       }
 
+      const bool message_visible = !string_is_empty(msg);
+
+#ifdef HAVE_GFX_WIDGETS
+      const bool widgets_visible = gfx_widgets_visible(video_info);
+#endif
+
       if ((vk->context->flags & VK_CTX_FLAG_HDR_ENABLE) &&
-          ((vk->flags & VK_FLAG_MENU_ENABLE) || (vk->flags & VK_FLAG_OVERLAY_ENABLE)) &&
+          ((vk->flags & VK_FLAG_MENU_ENABLE) || (vk->flags & VK_FLAG_OVERLAY_ENABLE)
+         || message_visible
+#ifdef HAVE_GFX_WIDGETS       
+         || widgets_visible
+#endif
+         ) &&
           (vk->offscreen_buffer.image != VK_NULL_HANDLE))
       {
          if(end_pass) vkCmdEndRenderPass(vk->cmd);
@@ -5242,7 +5253,7 @@ static bool vulkan_frame(void *data, const void *frame,
          vulkan_render_overlay(vk, video_width, video_height);
 #endif
 
-      if (!string_is_empty(msg))
+      if (message_visible)
           font_driver_render_msg(vk, msg, NULL, NULL);
 
 #ifdef HAVE_GFX_WIDGETS
@@ -5256,7 +5267,12 @@ static bool vulkan_frame(void *data, const void *frame,
 #ifdef VULKAN_HDR_SWAPCHAIN
       /* Copy over back buffer to swap chain render targets */
       if ((vk->context->flags & VK_CTX_FLAG_HDR_ENABLE) &&
-          ((vk->flags & VK_FLAG_MENU_ENABLE) || (vk->flags & VK_FLAG_OVERLAY_ENABLE)) &&
+          ((vk->flags & VK_FLAG_MENU_ENABLE) || (vk->flags & VK_FLAG_OVERLAY_ENABLE)
+         || message_visible
+#ifdef HAVE_GFX_WIDGETS       
+         || widgets_visible
+#endif
+         ) &&
           (vk->offscreen_buffer.image != VK_NULL_HANDLE))
       {
          backbuffer = &vk->backbuffers[swapchain_index];