- add third_party src.
[platform/framework/web/crosswalk.git] / src / third_party / skia / src / gpu / gl / iOS / SkNativeGLContext_iOS.mm
1
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  */
8
9 #include "gl/SkNativeGLContext.h"
10 #import <OpenGLES/EAGL.h>
11
12 #define EAGLCTX ((EAGLContext*)(fEAGLContext))
13
14 SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
15     fEAGLContext = [EAGLContext currentContext];
16     if (EAGLCTX) {
17         [EAGLCTX retain];
18     }
19 }
20
21 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
22     if (EAGLCTX) {
23         [EAGLContext setCurrentContext:EAGLCTX];
24         [EAGLCTX release];
25     }
26 }
27
28 ///////////////////////////////////////////////////////////////////////////////
29
30 SkNativeGLContext::SkNativeGLContext()
31     : fEAGLContext(NULL) {
32 }
33
34 SkNativeGLContext::~SkNativeGLContext() {
35     this->destroyGLContext();
36 }
37
38 void SkNativeGLContext::destroyGLContext() {
39     if ([EAGLContext currentContext] == EAGLCTX) {
40         [EAGLContext setCurrentContext:nil];
41     }
42     [EAGLCTX release];
43 }
44
45 const GrGLInterface* SkNativeGLContext::createGLContext() {
46     fEAGLContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
47     [EAGLContext setCurrentContext:EAGLCTX];
48     
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 }
57
58 void SkNativeGLContext::makeCurrent() const {
59     if (![EAGLContext setCurrentContext:EAGLCTX]) {
60         SkDebugf("Could not set the context.\n");
61     }
62 }
63
64 void SkNativeGLContext::swapBuffers() const { }