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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 http://mozilla.org/MPL/2.0/. */
use super::{
constants as webgl, ext_constants as gl, WebGLExtension, WebGLExtensionSpec, WebGLExtensions,
};
use canvas_traits::webgl::WebGLVersion;
use crate::dom::bindings::codegen::Bindings::OESTextureFloatBinding;
use crate::dom::bindings::reflector::{reflect_dom_object, DomObject, Reflector};
use crate::dom::bindings::root::DomRoot;
use crate::dom::webglrenderingcontext::WebGLRenderingContext;
use dom_struct::dom_struct;
#[dom_struct]
pub struct OESTextureFloat {
reflector_: Reflector,
}
impl OESTextureFloat {
fn new_inherited() -> OESTextureFloat {
Self {
reflector_: Reflector::new(),
}
}
}
impl WebGLExtension for OESTextureFloat {
type Extension = OESTextureFloat;
fn new(ctx: &WebGLRenderingContext) -> DomRoot<OESTextureFloat> {
reflect_dom_object(
Box::new(OESTextureFloat::new_inherited()),
&*ctx.global(),
OESTextureFloatBinding::Wrap,
)
}
fn spec() -> WebGLExtensionSpec {
WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
}
fn is_supported(ext: &WebGLExtensions) -> bool {
ext.supports_any_gl_extension(&[
"GL_OES_texture_float",
"GL_ARB_texture_float",
"GL_EXT_color_buffer_float",
])
}
fn enable(ext: &WebGLExtensions) {
ext.enable_tex_type(webgl::FLOAT);
if !ext.supports_gl_extension("GL_OES_texture_float") {
ext.add_effective_tex_internal_format(webgl::RGBA, webgl::FLOAT, gl::RGBA32F);
ext.add_effective_tex_internal_format(webgl::RGB, webgl::FLOAT, gl::RGB32F);
ext.add_effective_tex_internal_format(
webgl::LUMINANCE,
webgl::FLOAT,
gl::LUMINANCE32F_ARB,
);
ext.add_effective_tex_internal_format(webgl::ALPHA, webgl::FLOAT, gl::ALPHA32F_ARB);
ext.add_effective_tex_internal_format(
webgl::LUMINANCE_ALPHA,
webgl::FLOAT,
gl::LUMINANCE_ALPHA32F_ARB,
);
}
}
fn name() -> &'static str {
"OES_texture_float"
}
}
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