/* 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 dom::bindings::codegen::Bindings::OESTextureFloatBinding; use dom::bindings::js::Root; use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object}; use dom::webglrenderingcontext::WebGLRenderingContext; use dom_struct::dom_struct; use super::{constants as webgl, ext_constants as gl, WebGLExtension, WebGLExtensions}; #[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) -> Root { reflect_dom_object(box OESTextureFloat::new_inherited(), &*ctx.global(), OESTextureFloatBinding::Wrap) } 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) { // Enable FLOAT text data type ext.enable_tex_type(webgl::FLOAT); let needs_replace = !ext.supports_gl_extension("GL_OES_texture_float"); if needs_replace { // Special internal formats must be used to avoid clamped float values 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" } }