The Tor Browser: gfx/skia/trunk/src/gpu/gl/iOS/SkNativeGLContext

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

     2 /*

     3  * Copyright 2012 Google Inc.

     4  *

     5  * Use of this source code is governed by a BSD-style license that can be

     6  * found in the LICENSE file.

     7  */

     9 #include "gl/SkNativeGLContext.h"

    10 #import <OpenGLES/EAGL.h>

    12 #define EAGLCTX ((EAGLContext*)(fEAGLContext))

    14 SkNativeGLContext::AutoContextRestore::AutoContextRestore() {

    15     fEAGLContext = [EAGLContext currentContext];

    16     if (EAGLCTX) {

    17         [EAGLCTX retain];

    18     }

    19 }

    21 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {

    22     if (EAGLCTX) {

    23         [EAGLContext setCurrentContext:EAGLCTX];

    24         [EAGLCTX release];

    25     }

    26 }

    28 ///////////////////////////////////////////////////////////////////////////////

    30 SkNativeGLContext::SkNativeGLContext()

    31     : fEAGLContext(NULL) {

    32 }

    34 SkNativeGLContext::~SkNativeGLContext() {

    35     this->destroyGLContext();

    36 }

    38 void SkNativeGLContext::destroyGLContext() {

    39     if ([EAGLContext currentContext] == EAGLCTX) {

    40         [EAGLContext setCurrentContext:nil];

    41     }

    42     [EAGLCTX release];

    43 }

    45 const GrGLInterface* SkNativeGLContext::createGLContext() {

    46     fEAGLContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];

    47     [EAGLContext setCurrentContext:EAGLCTX];

    49     const GrGLInterface* interface = GrGLCreateNativeInterface();

    50     if (!interface) {

    51         SkDebugf("Failed to create gl interface");

    52         this->destroyGLContext();

    53         return NULL;

    54     }

    55     return interface;

    56 }

    58 void SkNativeGLContext::makeCurrent() const {

    59     if (![EAGLContext setCurrentContext:EAGLCTX]) {

    60         SkDebugf("Could not set the context.\n");

    61     }

    62 }

    64 void SkNativeGLContext::swapBuffers() const { }

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