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iOS: threaded WebGL on a CAEAGLLayer, deleteProgram fix #176

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Merged
triniwiz merged 2 commits into from
Sep 30, 2026
Merged

iOS: threaded WebGL on a CAEAGLLayer, deleteProgram fix #176

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f312392
fix(webgl): deleteProgram deleted a framebuffer with the program's name
triniwiz Sep 30, 2026
88984e6
feat(webgl): run iOS WebGL contexts on the WebGL thread
triniwiz Sep 30, 2026
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7 changes: 7 additions & 0 deletions crates/canvas-c/src/c2d/context.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,13 @@ pub fn resize_gl(context: &mut CanvasRenderingContext2D, width: f32, height: f32
context.clear_rect(0., 0., width, height);
context.flush_and_render_to_surface();

// The view's layer changed size; its drawable follows, and is what the surface wraps.
#[cfg(any(target_os = "ios", target_os = "visionos", target_os = "tvos"))]
if let Some(gl) = context.gl_context.as_mut() {
gl.resize_drawable(width as i32, height as i32);
gl.bind_drawable();
}

unsafe {
gl_bindings::Viewport(0, 0, width as i32, height as i32);
match context.window_framebuffer() {
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