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 canvas_traits::webgl::{TexFormat, WebGLVersion};
6use dom_struct::dom_struct;
7
8use super::{WebGLExtension, WebGLExtensionSpec, WebGLExtensions};
9use crate::dom::bindings::reflector::{DomGlobal, Reflector, reflect_dom_object};
10use crate::dom::bindings::root::DomRoot;
11use crate::dom::webgl::webglrenderingcontext::WebGLRenderingContext;
12use crate::dom::webgl::webgltexture::{TexCompression, TexCompressionValidation};
13use crate::script_runtime::CanGc;
14
15#[dom_struct]
16pub(crate) struct WEBGLCompressedTextureS3TC {
17    reflector_: Reflector,
18}
19
20impl WEBGLCompressedTextureS3TC {
21    fn new_inherited() -> WEBGLCompressedTextureS3TC {
22        Self {
23            reflector_: Reflector::new(),
24        }
25    }
26}
27
28impl WebGLExtension for WEBGLCompressedTextureS3TC {
29    type Extension = WEBGLCompressedTextureS3TC;
30    fn new(ctx: &WebGLRenderingContext, can_gc: CanGc) -> DomRoot<WEBGLCompressedTextureS3TC> {
31        reflect_dom_object(
32            Box::new(WEBGLCompressedTextureS3TC::new_inherited()),
33            &*ctx.global(),
34            can_gc,
35        )
36    }
37
38    fn spec() -> WebGLExtensionSpec {
39        WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
40    }
41
42    fn is_supported(ext: &WebGLExtensions) -> bool {
43        ext.supports_gl_extension("GL_EXT_texture_compression_s3tc") ||
44            ext.supports_all_gl_extension(&[
45                "GL_EXT_texture_compression_dxt1",
46                "GL_ANGLE_texture_compression_dxt3",
47                "GL_ANGLE_texture_compression_dxt5",
48            ])
49    }
50
51    fn enable(ext: &WebGLExtensions) {
52        ext.add_tex_compression_formats(&[
53            TexCompression {
54                format: TexFormat::CompressedRgbS3tcDxt1,
55                bytes_per_block: 8,
56                block_width: 4,
57                block_height: 4,
58                validation: TexCompressionValidation::S3TC,
59            },
60            TexCompression {
61                format: TexFormat::CompressedRgbaS3tcDxt1,
62                bytes_per_block: 8,
63                block_width: 4,
64                block_height: 4,
65                validation: TexCompressionValidation::S3TC,
66            },
67            TexCompression {
68                format: TexFormat::CompressedRgbaS3tcDxt3,
69                bytes_per_block: 16,
70                block_width: 4,
71                block_height: 4,
72                validation: TexCompressionValidation::S3TC,
73            },
74            TexCompression {
75                format: TexFormat::CompressedRgbaS3tcDxt5,
76                bytes_per_block: 16,
77                block_width: 4,
78                block_height: 4,
79                validation: TexCompressionValidation::S3TC,
80            },
81        ]);
82    }
83
84    fn name() -> &'static str {
85        "WEBGL_compressed_texture_s3tc"
86    }
87}
script/dom/webgl/extensions/ext/webglcompressedtextures3tc.rs

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