TMP

Author: madsmtm

Cargo.toml

@@ -40,13 +40,19 @@ x11 = [
     "winit/x11",
 ]
 x11-dlopen = ["tiny-xlib/dlopen", "x11rb/dl-libxcb"]
+f16 = ["half"]
 
 [dependencies]
 raw_window_handle = { package = "raw-window-handle", version = "0.6", features = [
     "std",
 ] }
 tracing = { version = "0.1.41", default-features = false }
 
+# For f16 support in pixel conversions.
+# TODO: Use standard library's f16 once stable:
+# https://github.com/rust-lang/rust/issues/116909
+half = { version = "2.7.1", optional = true }
+
 [target.'cfg(target_os = "android")'.dependencies]
 bytemuck = "1.12.3"
 ndk = "0.9.0"

src/backend_interface.rs

@@ -1,6 +1,6 @@
 //! Interface implemented by backends
 
-use crate::{AlphaMode, InitError, Rect, SoftBufferError};
+use crate::{AlphaMode, InitError, PixelFormat, Rect, SoftBufferError};
 
 use raw_window_handle::{HasDisplayHandle, HasWindowHandle};
 use std::num::NonZeroU32;
@@ -29,12 +29,15 @@ pub(crate) trait SurfaceInterface<D: HasDisplayHandle + ?Sized, W: HasWindowHand
     fn alpha_mode(&self) -> AlphaMode;
 
     /// Reconfigure the internal buffer(s).
+    ///
+    /// Returns `Some(byte_stride)` if the buffer was successfully resized, or `None` if the surface does not support the given pixel format.
     fn configure(
         &mut self,
         width: NonZeroU32,
         height: NonZeroU32,
         alpha_mode: AlphaMode,
-    ) -> Result<(), SoftBufferError>;
+        pixel_format: PixelFormat,
+    ) -> Result<Option<u32>, SoftBufferError>;
 
     /// Get a mutable reference to the buffer.
     fn buffer_mut(&mut self) -> Result<Self::Buffer<'_>, SoftBufferError>;

src/backends/web.rs

@@ -10,6 +10,7 @@ use web_sys::{CanvasRenderingContext2d, HtmlCanvasElement};
 use web_sys::{OffscreenCanvas, OffscreenCanvasRenderingContext2d};
 
 use crate::backend_interface::*;
+use crate::convert::FALLBACK_FORMAT;
 use crate::error::{InitError, SwResultExt};
 use crate::{util, NoDisplayHandle, NoWindowHandle, Rect, SoftBufferError};
 use std::marker::PhantomData;
@@ -231,6 +232,8 @@ impl SurfaceExtWeb for crate::Surface<NoDisplayHandle, NoWindowHandle> {
         let imple = crate::SurfaceDispatch::Web(WebImpl::from_canvas(canvas, NoWindowHandle(()))?);
 
         Ok(Self {
+            pixel_format: FALLBACK_FORMAT,
+            fallback_buffer: None,
             surface_impl: Box::new(imple),
             _marker: PhantomData,
         })
@@ -243,6 +246,8 @@ impl SurfaceExtWeb for crate::Surface<NoDisplayHandle, NoWindowHandle> {
         )?);
 
         Ok(Self {
+            pixel_format: FALLBACK_FORMAT,
+            fallback_buffer: None,
             surface_impl: Box::new(imple),
             _marker: PhantomData,
         })