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Support fetching viewport info

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This commit is contained in:
Manish Goregaokar 2018-12-21 14:26:11 -08:00
parent e259ff727e
commit 7e043a33f1
9 changed files with 125 additions and 6 deletions
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7
components/script/dom/webglrenderingcontext.rs
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@ -157,6 +157,7 @@ pub struct WebGLRenderingContext {
current_scissor: Cell<(i32, i32, u32, u32)>,
#[ignore_malloc_size_of = "Because it's small"]
current_clear_color: Cell<(f32, f32, f32, f32)>,
size: Cell<Size2D<u32>>,
extension_manager: WebGLExtensions,
capabilities: Capabilities,
default_vao: DomOnceCell<WebGLVertexArrayObjectOES>,
@ -211,6 +212,7 @@ impl WebGLRenderingContext {
current_program: MutNullableDom::new(None),
current_vertex_attrib_0: Cell::new((0f32, 0f32, 0f32, 1f32)),
current_scissor: Cell::new((0, 0, size.width, size.height)),
size: Cell::new(size),
current_clear_color: Cell::new((0.0, 0.0, 0.0, 0.0)),
extension_manager: WebGLExtensions::new(webgl_version),
capabilities: Default::default(),
@ -266,6 +268,7 @@ impl WebGLRenderingContext {
pub fn recreate(&self, size: Size2D<u32>) {
let (sender, receiver) = webgl_channel().unwrap();
self.webgl_sender.send_resize(size, sender).unwrap();
self.size.set(size);
if let Err(msg) = receiver.recv().unwrap() {
error!("Error resizing WebGLContext: {}", msg);
@ -340,6 +343,10 @@ impl WebGLRenderingContext {
}
}
pub fn size(&self) -> Size2D<u32> {
self.size.get()
}
// Helper function for validating framebuffer completeness in
// calls touching the framebuffer. From the GLES 2.0.25 spec,
// page 119: