The Tor Browser: content/canvas/src/WebGLContextUtils.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef WEBGLCONTEXTUTILS_H_

     7 #define WEBGLCONTEXTUTILS_H_

     9 #include "WebGLContext.h"

    10 #include "mozilla/Assertions.h"

    11 #include "mozilla/dom/BindingUtils.h"

    13 namespace mozilla {

    15 bool IsGLDepthFormat(GLenum webGLFormat);

    16 bool IsGLDepthStencilFormat(GLenum webGLFormat);

    17 bool FormatHasAlpha(GLenum webGLFormat);

    18 void DriverFormatsFromFormatAndType(gl::GLContext* gl, GLenum webGLFormat, GLenum webGLType,

    19                                     GLenum* out_driverInternalFormat, GLenum* out_driverFormat);

    20 GLenum DriverTypeFromType(gl::GLContext* gl, GLenum webGLType);

    22 template <typename WebGLObjectType>

    23 JS::Value

    24 WebGLContext::WebGLObjectAsJSValue(JSContext *cx, const WebGLObjectType *object, ErrorResult& rv) const

    25 {

    26     if (!object) {

    27         return JS::NullValue();

    28     }

    29     MOZ_ASSERT(this == object->Context());

    30     JS::Rooted<JS::Value> v(cx);

    31     JS::Rooted<JSObject*> wrapper(cx, GetWrapper());

    32     JSAutoCompartment ac(cx, wrapper);

    33     if (!dom::WrapNewBindingObject(cx, const_cast<WebGLObjectType*>(object), &v)) {

    34         rv.Throw(NS_ERROR_FAILURE);

    35         return JS::NullValue();

    36     }

    37     return v;

    38 }

    40 template <typename WebGLObjectType>

    41 JSObject*

    42 WebGLContext::WebGLObjectAsJSObject(JSContext *cx, const WebGLObjectType *object, ErrorResult& rv) const

    43 {

    44     JS::Value v = WebGLObjectAsJSValue(cx, object, rv);

    45     if (v.isNull()) {

    46         return nullptr;

    47     }

    48     return &v.toObject();

    49 }

    51 } // namespace mozilla

    53 #endif // WEBGLCONTEXTUTILS_H_

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