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/* 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 super::{WebGLExtension, WebGLExtensionSpec, WebGLExtensions};
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::DomRoot;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use crate::dom::webgltexture::{TexCompression, TexCompressionValidation};
use canvas_traits::webgl::{TexFormat, WebGLVersion};
use dom_struct::dom_struct;
#[dom_struct]
pub struct WEBGLCompressedTextureS3TC {
reflector_: Reflector,
}
impl WEBGLCompressedTextureS3TC {
fn new_inherited() -> WEBGLCompressedTextureS3TC {
Self {
reflector_: Reflector::new(),
}
}
}
impl WebGLExtension for WEBGLCompressedTextureS3TC {
type Extension = WEBGLCompressedTextureS3TC;
fn new(ctx: &WebGLRenderingContext) -> DomRoot<WEBGLCompressedTextureS3TC> {
reflect_dom_object(
Box::new(WEBGLCompressedTextureS3TC::new_inherited()),
&*ctx.global(),
)
}
fn spec() -> WebGLExtensionSpec {
WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
}
fn is_supported(ext: &WebGLExtensions) -> bool {
ext.supports_gl_extension("GL_EXT_texture_compression_s3tc") ||
ext.supports_all_gl_extension(&[
"GL_EXT_texture_compression_dxt1",
"GL_ANGLE_texture_compression_dxt3",
"GL_ANGLE_texture_compression_dxt5",
])
}
fn enable(ext: &WebGLExtensions) {
ext.add_tex_compression_formats(&[
TexCompression {
format: TexFormat::CompressedRgbS3tcDxt1,
bytes_per_block: 8,
block_width: 4,
block_height: 4,
validation: TexCompressionValidation::S3TC,
},
TexCompression {
format: TexFormat::CompressedRgbaS3tcDxt1,
bytes_per_block: 8,
block_width: 4,
block_height: 4,
validation: TexCompressionValidation::S3TC,
},
TexCompression {
format: TexFormat::CompressedRgbaS3tcDxt3,
bytes_per_block: 16,
block_width: 4,
block_height: 4,
validation: TexCompressionValidation::S3TC,
},
TexCompression {
format: TexFormat::CompressedRgbaS3tcDxt5,
bytes_per_block: 16,
block_width: 4,
block_height: 4,
validation: TexCompressionValidation::S3TC,
},
]);
}
fn name() -> &'static str {
"WEBGL_compressed_texture_s3tc"
}
}
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