Implement WebGL extensions.

components/script/Cargo.toml

@@ -43,7 +43,9 @@ domobject_derive = {path = "../domobject_derive"}
 encoding = "0.2"
 euclid = "0.11"
 fnv = "1.0"
+gleam = "0.4"
 gfx_traits = {path = "../gfx_traits"}
+half = "1.0"
 heapsize = "0.3.6"
 heapsize_derive = "0.1"
 html5ever = {version = "0.16", features = ["heap_size", "unstable"]}

components/script/dom/bindings/trace.rs

@@ -107,7 +107,7 @@ use style::viewport::ViewportRule;
 use time::Duration;
 use uuid::Uuid;
 use webrender_traits::{WebGLBufferId, WebGLError, WebGLFramebufferId, WebGLProgramId};
-use webrender_traits::{WebGLRenderbufferId, WebGLShaderId, WebGLTextureId};
+use webrender_traits::{WebGLRenderbufferId, WebGLShaderId, WebGLTextureId, WebGLVertexArrayId};
 use webvr_traits::WebVRGamepadHand;
 
 /// A trait to allow tracing (only) DOM objects.
@@ -388,6 +388,7 @@ unsafe_no_jsmanaged_fields!(WebGLProgramId);
 unsafe_no_jsmanaged_fields!(WebGLRenderbufferId);
 unsafe_no_jsmanaged_fields!(WebGLShaderId);
 unsafe_no_jsmanaged_fields!(WebGLTextureId);
+unsafe_no_jsmanaged_fields!(WebGLVertexArrayId);
 unsafe_no_jsmanaged_fields!(MediaList);
 unsafe_no_jsmanaged_fields!(WebVRGamepadHand);
 

components/script/dom/mod.rs

@@ -451,6 +451,8 @@ pub mod vrfieldofview;
 pub mod vrframedata;
 pub mod vrpose;
 pub mod vrstageparameters;
+pub mod webgl_extensions;
+pub use self::webgl_extensions::ext::*;
 pub mod webgl_validations;
 pub mod webglactiveinfo;
 pub mod webglbuffer;

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

@@ -0,0 +1,13 @@
+/* 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::WebGLRenderingContextBinding::WebGLRenderingContextConstants as constants;
+use super::{ext_constants, WebGLExtension, WebGLExtensions};
+
+pub mod oestexturefloat;
+pub mod oestexturefloatlinear;
+pub mod oestexturehalffloat;
+pub mod oestexturehalffloatlinear;
+pub mod oesvertexarrayobject;
+pub mod webglvertexarrayobjectoes;

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

@@ -0,0 +1,56 @@
+/* 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<OESTextureFloat> {
+        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"])
+    }
+
+    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"
+    }
+}

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

@@ -0,0 +1,45 @@
+/* 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::OESTextureFloatLinearBinding;
+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, WebGLExtension, WebGLExtensions};
+
+#[dom_struct]
+pub struct OESTextureFloatLinear {
+    reflector_: Reflector,
+}
+
+impl OESTextureFloatLinear {
+    fn new_inherited() -> OESTextureFloatLinear {
+        Self {
+            reflector_: Reflector::new(),
+        }
+    }
+}
+
+impl WebGLExtension for OESTextureFloatLinear {
+    type Extension = OESTextureFloatLinear;
+    fn new(ctx: &WebGLRenderingContext) -> Root<OESTextureFloatLinear> {
+        reflect_dom_object(box OESTextureFloatLinear::new_inherited(),
+                           &*ctx.global(),
+                           OESTextureFloatLinearBinding::Wrap)
+    }
+
+    fn is_supported(ext: &WebGLExtensions) -> bool {
+        ext.supports_any_gl_extension(&["GL_OES_texture_float_linear",
+                                        "GL_ARB_texture_float"])
+    }
+
+    fn enable(ext: &WebGLExtensions) {
+        ext.enable_filterable_tex_type(webgl::FLOAT);
+    }
+
+    fn name() -> &'static str {
+        "OES_texture_float_linear"
+    }
+}

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

@@ -0,0 +1,57 @@
+/* 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::OESTextureHalfFloatBinding::{self, OESTextureHalfFloatConstants};
+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 OESTextureHalfFloat {
+    reflector_: Reflector,
+}
+
+impl OESTextureHalfFloat {
+    fn new_inherited() -> OESTextureHalfFloat {
+        Self {
+            reflector_: Reflector::new(),
+        }
+    }
+}
+
+impl WebGLExtension for OESTextureHalfFloat {
+    type Extension = OESTextureHalfFloat;
+    fn new(ctx: &WebGLRenderingContext) -> Root<OESTextureHalfFloat> {
+        reflect_dom_object(box OESTextureHalfFloat::new_inherited(),
+                           &*ctx.global(),
+                           OESTextureHalfFloatBinding::Wrap)
+    }
+
+    fn is_supported(ext: &WebGLExtensions) -> bool {
+        ext.supports_any_gl_extension(&["GL_OES_texture_half_float",
+                                        "GL_ARB_half_float_pixel",
+                                        "GL_NV_half_float"])
+    }
+
+    fn enable(ext: &WebGLExtensions) {
+        // Enable FLOAT text data type
+        let hf = OESTextureHalfFloatConstants::HALF_FLOAT_OES;
+        ext.enable_tex_type(hf);
+        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, hf, gl::RGBA16F);
+            ext.add_effective_tex_internal_format(webgl::RGB, hf, gl::RGB16F);
+            ext.add_effective_tex_internal_format(webgl::LUMINANCE, hf, gl::LUMINANCE16F_ARB);
+            ext.add_effective_tex_internal_format(webgl::ALPHA, hf, gl::ALPHA16F_ARB);
+            ext.add_effective_tex_internal_format(webgl::LUMINANCE_ALPHA, hf, gl::LUMINANCE_ALPHA16F_ARB);
+        }
+    }
+
+    fn name() -> &'static str {
+        "OES_texture_half_float"
+    }
+}

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

@@ -0,0 +1,47 @@
+/* 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::OESTextureHalfFloatBinding::OESTextureHalfFloatConstants;
+use dom::bindings::codegen::Bindings::OESTextureHalfFloatLinearBinding;
+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::{WebGLExtension, WebGLExtensions};
+
+#[dom_struct]
+pub struct OESTextureHalfFloatLinear {
+    reflector_: Reflector,
+}
+
+impl OESTextureHalfFloatLinear {
+    fn new_inherited() -> OESTextureHalfFloatLinear {
+        Self {
+            reflector_: Reflector::new(),
+        }
+    }
+}
+
+impl WebGLExtension for OESTextureHalfFloatLinear {
+    type Extension = OESTextureHalfFloatLinear;
+    fn new(ctx: &WebGLRenderingContext) -> Root<OESTextureHalfFloatLinear> {
+        reflect_dom_object(box OESTextureHalfFloatLinear::new_inherited(),
+                           &*ctx.global(),
+                           OESTextureHalfFloatLinearBinding::Wrap)
+    }
+
+    fn is_supported(ext: &WebGLExtensions) -> bool {
+        ext.supports_any_gl_extension(&["GL_OES_texture_float_linear",
+                                        "GL_ARB_half_float_pixel",
+                                        "GL_NV_half_float"])
+    }
+
+    fn enable(ext: &WebGLExtensions) {
+        ext.enable_filterable_tex_type(OESTextureHalfFloatConstants::HALF_FLOAT_OES);
+    }
+
+    fn name() -> &'static str {
+        "OES_texture_half_float_linear"
+    }
+}