michael@0: 
michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "gl/SkNativeGLContext.h"
michael@0: #import <OpenGLES/EAGL.h>
michael@0: 
michael@0: #define EAGLCTX ((EAGLContext*)(fEAGLContext))
michael@0: 
michael@0: SkNativeGLContext::AutoContextRestore::AutoContextRestore() {
michael@0:     fEAGLContext = [EAGLContext currentContext];
michael@0:     if (EAGLCTX) {
michael@0:         [EAGLCTX retain];
michael@0:     }
michael@0: }
michael@0: 
michael@0: SkNativeGLContext::AutoContextRestore::~AutoContextRestore() {
michael@0:     if (EAGLCTX) {
michael@0:         [EAGLContext setCurrentContext:EAGLCTX];
michael@0:         [EAGLCTX release];
michael@0:     }
michael@0: }
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: SkNativeGLContext::SkNativeGLContext()
michael@0:     : fEAGLContext(NULL) {
michael@0: }
michael@0: 
michael@0: SkNativeGLContext::~SkNativeGLContext() {
michael@0:     this->destroyGLContext();
michael@0: }
michael@0: 
michael@0: void SkNativeGLContext::destroyGLContext() {
michael@0:     if ([EAGLContext currentContext] == EAGLCTX) {
michael@0:         [EAGLContext setCurrentContext:nil];
michael@0:     }
michael@0:     [EAGLCTX release];
michael@0: }
michael@0: 
michael@0: const GrGLInterface* SkNativeGLContext::createGLContext() {
michael@0:     fEAGLContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
michael@0:     [EAGLContext setCurrentContext:EAGLCTX];
michael@0:     
michael@0:     const GrGLInterface* interface = GrGLCreateNativeInterface();
michael@0:     if (!interface) {
michael@0:         SkDebugf("Failed to create gl interface");
michael@0:         this->destroyGLContext();
michael@0:         return NULL;
michael@0:     }
michael@0:     return interface;
michael@0: }
michael@0: 
michael@0: void SkNativeGLContext::makeCurrent() const {
michael@0:     if (![EAGLContext setCurrentContext:EAGLCTX]) {
michael@0:         SkDebugf("Could not set the context.\n");
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkNativeGLContext::swapBuffers() const { }