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Add initial support for WebGL2 read framebuffer

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Adds support for binding to the read framebuffer slot and querying
its status.
This commit is contained in:
Mátyás Mustoha 2020-02-14 11:57:11 +01:00
parent 833485887e
commit 796ee70597
5 changed files with 203 additions and 90 deletions
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24
components/script/dom/webglrenderbuffer.rs
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@ -96,20 +96,24 @@ impl WebGLRenderbuffer {
if !self.is_deleted.get() {
self.is_deleted.set(true);
let context = self.upcast::<WebGLObject>().context();
/*
If a renderbuffer object is deleted while its image is attached to the currently
bound framebuffer, then it is as if FramebufferRenderbuffer had been called, with
a renderbuffer of 0, for each attachment point to which this image was attached
in the currently bound framebuffer.
- GLES 2.0, 4.4.3, "Attaching Renderbuffer Images to a Framebuffer"
*/
let currently_bound_framebuffer =
self.upcast::<WebGLObject>().context().bound_framebuffer();
if let Some(fb) = currently_bound_framebuffer {
If a renderbuffer object is deleted while its image is attached to one or more
attachment points in a currently bound framebuffer object, then it is as if
FramebufferRenderbuffer had been called, with a renderbuffer of zero, for each
attachment point to which this image was attached in that framebuffer object.
In other words,the renderbuffer image is first detached from all attachment points
in that frame-buffer object.
- GLES 3.0, 4.4.2.3, "Attaching Renderbuffer Images to a Framebuffer"
*/
if let Some(fb) = context.get_draw_framebuffer_slot().get() {
let _ = fb.detach_renderbuffer(self);
}
if let Some(fb) = context.get_read_framebuffer_slot().get() {
let _ = fb.detach_renderbuffer(self);
}
let context = self.upcast::<WebGLObject>().context();
let cmd = WebGLCommand::DeleteRenderbuffer(self.id);
if fallible {
context.send_command_ignored(cmd);