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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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20
components/script/dom/webgltexture.rs
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@ -197,15 +197,17 @@ impl WebGLTexture {
}
/*
If a texture object is deleted while its image is attached to the currently
bound framebuffer, then it is as if FramebufferTexture2D had been called, with
a texture of 0, for each attachment point to which this image was attached
in the currently bound framebuffer.
- GLES 2.0, 4.4.3, "Attaching Texture Images to a Framebuffer"
*/
let currently_bound_framebuffer =
self.upcast::<WebGLObject>().context().bound_framebuffer();
if let Some(fb) = currently_bound_framebuffer {
If a texture object is deleted while its image is attached to one or more attachment
points in a currently bound framebuffer, then it is as if FramebufferTexture had been
called, with a texture of zero, for each attachment point to which this im-age was
attached in that framebuffer. In other words, this texture image is firstdetached from
all attachment points in a currently bound framebuffer.
- GLES 3.0, 4.4.2.3, "Attaching Texture Images to a Framebuffer"
*/
if let Some(fb) = context.get_draw_framebuffer_slot().get() {
let _ = fb.detach_texture(self);
}
if let Some(fb) = context.get_read_framebuffer_slot().get() {
let _ = fb.detach_texture(self);
}