Implement EXT_blend_minmax

components/script/dom/webgl_extensions/ext/extblendminmax.rs

@@ -0,0 +1,50 @@
+/* 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 canvas_traits::webgl::WebGLVersion;
+use dom::bindings::codegen::Bindings::EXTBlendMinmaxBinding;
+use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
+use dom::bindings::root::DomRoot;
+use dom::webglrenderingcontext::WebGLRenderingContext;
+use dom_struct::dom_struct;
+use super::{WebGLExtension, WebGLExtensions, WebGLExtensionSpec};
+
+#[dom_struct]
+pub struct EXTBlendMinmax {
+    reflector_: Reflector,
+}
+
+impl EXTBlendMinmax {
+    fn new_inherited() -> Self {
+        Self { reflector_: Reflector::new() }
+    }
+}
+
+impl WebGLExtension for EXTBlendMinmax {
+    type Extension = Self;
+
+    fn new(ctx: &WebGLRenderingContext) -> DomRoot<Self> {
+        reflect_dom_object(
+            Box::new(Self::new_inherited()),
+            &*ctx.global(),
+            EXTBlendMinmaxBinding::Wrap,
+        )
+    }
+
+    fn spec() -> WebGLExtensionSpec {
+        WebGLExtensionSpec::Specific(WebGLVersion::WebGL1)
+    }
+
+    fn is_supported(ext: &WebGLExtensions) -> bool {
+        ext.supports_gl_extension("GL_EXT_blend_minmax")
+    }
+
+    fn enable(ext: &WebGLExtensions) {
+        ext.enable_blend_minmax();
+    }
+
+    fn name() -> &'static str {
+        "EXT_blend_minmax"
+    }
+}

components/script/dom/webgl_extensions/ext/mod.rs

@@ -5,6 +5,7 @@
 use dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
 use super::{ext_constants, WebGLExtension, WebGLExtensions, WebGLExtensionSpec};
 
+pub mod extblendminmax;
 pub mod extshadertexturelod;
 pub mod exttexturefilteranisotropic;
 pub mod oeselementindexuint;