metal: scan out in more circumstances

src/gfx_apis/gl/renderer/context.rs

@@ -187,6 +187,7 @@ impl GlRenderContext {
             ctx: self.clone(),
             gl,
             resv: Default::default(),
+            format,
         }))
     }
 }

src/gfx_apis/gl/renderer/image.rs

@@ -29,6 +29,7 @@ impl Image {
             ctx: self.ctx.clone(),
             gl: GlTexture::import_img(&self.ctx.ctx, &self.gl)?,
             resv: Default::default(),
+            format: self.gl.dmabuf.format,
         }))
     }
 

src/gfx_apis/gl/renderer/texture.rs

@@ -17,6 +17,7 @@ pub struct Texture {
     pub(in crate::gfx_apis::gl) ctx: Rc<GlRenderContext>,
     pub(in crate::gfx_apis::gl) gl: GlTexture,
     pub(in crate::gfx_apis::gl) resv: TextureReservations,
+    pub(in crate::gfx_apis::gl) format: &'static Format,
 }
 
 impl Debug for Texture {
@@ -68,4 +69,8 @@ impl GfxTexture for Texture {
     fn reservations(&self) -> &TextureReservations {
         &self.resv
     }
+
+    fn format(&self) -> &'static Format {
+        self.format
+    }
 }

src/gfx_apis/vulkan/image.rs

@@ -587,4 +587,8 @@ impl GfxTexture for VulkanImage {
     fn reservations(&self) -> &TextureReservations {
         &self.resv
     }
+
+    fn format(&self) -> &'static Format {
+        self.format
+    }
 }