1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use canvas_traits::webgl::{WebGLSLVersion, WebGLVersion};
use dom_struct::dom_struct;
use super::{WebGLExtension, WebGLExtensionSpec, WebGLExtensions};
use crate::dom::bindings::reflector::{reflect_dom_object, DomGlobal, Reflector};
use crate::dom::bindings::root::DomRoot;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::script_runtime::CanGc;
#[dom_struct]
pub(crate) struct EXTFragDepth {
reflector_: Reflector,
}
impl EXTFragDepth {
fn new_inherited() -> EXTFragDepth {
Self {
reflector_: Reflector::new(),
}
}
}
impl WebGLExtension for EXTFragDepth {
type Extension = Self;
fn new(ctx: &WebGLRenderingContext) -> DomRoot<Self> {
reflect_dom_object(
Box::new(Self::new_inherited()),
&*ctx.global(),
CanGc::note(),
)
}
fn spec() -> WebGLExtensionSpec {
WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
}
fn is_supported(ext: &WebGLExtensions) -> bool {
let min_glsl_version = if ext.is_gles() {
WebGLSLVersion { major: 3, minor: 0 }
} else {
WebGLSLVersion {
major: 1,
minor: 10,
}
};
match (
ext.is_gles(),
ext.is_min_glsl_version_satisfied(min_glsl_version),
) {
// ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
// 1524804)
(true, true) => false,
(true, false) => ext.supports_gl_extension("GL_EXT_frag_depth"),
(false, is_min_glsl_version_satisfied) => is_min_glsl_version_satisfied,
}
}
fn enable(_ext: &WebGLExtensions) {}
fn name() -> &'static str {
"EXT_frag_depth"
}
}
|
