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Add support for WebGL2 FramebufferTextureLayer

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Adds support for `FramebufferTextureLayer` WebGL2 call.

See: https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.4
This commit is contained in:
Mátyás Mustoha 2020-02-14 13:14:07 +01:00
parent 61cf25c98a
commit 8389189d94
9 changed files with 145 additions and 39 deletions
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55
components/script/dom/webglframebuffer.rs
View file

@ -727,6 +727,61 @@ impl WebGLFramebuffer {
Ok(())
}
pub fn texture_layer(
&self,
attachment: u32,
texture: Option<&WebGLTexture>,
level: i32,
layer: i32,
) -> WebGLResult<()> {
let binding = self
.attachment_binding(attachment)
.ok_or(WebGLError::InvalidEnum)?;
let context = self.upcast::<WebGLObject>().context();
let tex_id = match texture {
Some(texture) => {
let (max_level, max_layer) = match texture.target() {
Some(constants::TEXTURE_3D) => (
log2(context.limits().max_3d_texture_size),
context.limits().max_3d_texture_size - 1,
),
Some(constants::TEXTURE_2D) => (
log2(context.limits().max_tex_size),
context.limits().max_array_texture_layers - 1,
),
_ => return Err(WebGLError::InvalidOperation),
};
if level < 0 || level as u32 >= max_level {
return Err(WebGLError::InvalidValue);
}
if layer < 0 || layer as u32 >= max_layer {
return Err(WebGLError::InvalidValue);
}
*binding.borrow_mut() = Some(WebGLFramebufferAttachment::Texture {
texture: Dom::from_ref(texture),
level: level,
});
texture.attach_to_framebuffer(self);
Some(texture.id())
},
_ => None,
};
context.send_command(WebGLCommand::FramebufferTextureLayer(
self.target.get().unwrap(),
attachment,
tex_id,
level,
layer,
));
Ok(())
}
fn with_matching_renderbuffers<F>(&self, rb: &WebGLRenderbuffer, mut closure: F)
where
F: FnMut(&DomRefCell<Option<WebGLFramebufferAttachment>>, u32),