script/dom/webgl/extensions/ext/
webglcompressedtextures3tc.rs

1/* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this
3 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
4
5use dom_struct::dom_struct;
6use js::context::JSContext;
7use script_bindings::reflector::{Reflector, reflect_dom_object_with_cx};
8use servo_canvas_traits::webgl::{TexFormat, WebGLVersion};
9
10use super::{WebGLExtension, WebGLExtensionSpec, WebGLExtensions};
11use crate::dom::bindings::reflector::DomGlobal;
12use crate::dom::bindings::root::DomRoot;
13use crate::dom::webgl::webglrenderingcontext::WebGLRenderingContext;
14use crate::dom::webgl::webgltexture::{TexCompression, TexCompressionValidation};
15
16#[dom_struct]
17pub(crate) struct WEBGLCompressedTextureS3TC {
18    reflector_: Reflector,
19}
20
21impl WEBGLCompressedTextureS3TC {
22    fn new_inherited() -> WEBGLCompressedTextureS3TC {
23        Self {
24            reflector_: Reflector::new(),
25        }
26    }
27}
28
29impl WebGLExtension for WEBGLCompressedTextureS3TC {
30    type Extension = WEBGLCompressedTextureS3TC;
31    fn new(cx: &mut JSContext, ctx: &WebGLRenderingContext) -> DomRoot<WEBGLCompressedTextureS3TC> {
32        reflect_dom_object_with_cx(Box::new(Self::new_inherited()), &*ctx.global(), cx)
33    }
34
35    fn spec() -> WebGLExtensionSpec {
36        WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
37    }
38
39    fn is_supported(ext: &WebGLExtensions) -> bool {
40        ext.supports_gl_extension("GL_EXT_texture_compression_s3tc") ||
41            ext.supports_all_gl_extension(&[
42                "GL_EXT_texture_compression_dxt1",
43                "GL_ANGLE_texture_compression_dxt3",
44                "GL_ANGLE_texture_compression_dxt5",
45            ])
46    }
47
48    fn enable(ext: &WebGLExtensions) {
49        ext.add_tex_compression_formats(&[
50            TexCompression {
51                format: TexFormat::CompressedRgbS3tcDxt1,
52                bytes_per_block: 8,
53                block_width: 4,
54                block_height: 4,
55                validation: TexCompressionValidation::S3TC,
56            },
57            TexCompression {
58                format: TexFormat::CompressedRgbaS3tcDxt1,
59                bytes_per_block: 8,
60                block_width: 4,
61                block_height: 4,
62                validation: TexCompressionValidation::S3TC,
63            },
64            TexCompression {
65                format: TexFormat::CompressedRgbaS3tcDxt3,
66                bytes_per_block: 16,
67                block_width: 4,
68                block_height: 4,
69                validation: TexCompressionValidation::S3TC,
70            },
71            TexCompression {
72                format: TexFormat::CompressedRgbaS3tcDxt5,
73                bytes_per_block: 16,
74                block_width: 4,
75                block_height: 4,
76                validation: TexCompressionValidation::S3TC,
77            },
78        ]);
79    }
80
81    fn name() -> &'static str {
82        "WEBGL_compressed_texture_s3tc"
83    }
84}
script/dom/webgl/extensions/ext/webglcompressedtextures3tc.rs

script/dom/webgl/extensions/ext/
webglcompressedtextures3tc.rs
