Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / third_party / skia / src / gpu / gl / GrGLContext.cpp
1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7
8 #include "GrGLContext.h"
9
10 ////////////////////////////////////////////////////////////////////////////////
11
12 GrGLContextInfo& GrGLContextInfo::operator= (const GrGLContextInfo& that) {
13     fInterface.reset(SkSafeRef(that.fInterface.get()));
14     fGLVersion      = that.fGLVersion;
15     fGLSLGeneration = that.fGLSLGeneration;
16     fVendor         = that.fVendor;
17     fRenderer       = that.fRenderer;
18     fIsMesa         = that.fIsMesa;
19     fIsChromium     = that.fIsChromium;
20     *fGLCaps        = *that.fGLCaps.get();
21     return *this;
22 }
23
24 bool GrGLContextInfo::initialize(const GrGLInterface* interface) {
25     this->reset();
26     // We haven't validated the GrGLInterface yet, so check for GetString
27     // function pointer
28     if (interface->fFunctions.fGetString) {
29         const GrGLubyte* verUByte;
30         GR_GL_CALL_RET(interface, verUByte, GetString(GR_GL_VERSION));
31         const char* ver = reinterpret_cast<const char*>(verUByte);
32
33         const GrGLubyte* rendererUByte;
34         GR_GL_CALL_RET(interface, rendererUByte, GetString(GR_GL_RENDERER));
35         const char* renderer = reinterpret_cast<const char*>(rendererUByte);
36
37         if (interface->validate()) {
38
39             fGLVersion = GrGLGetVersionFromString(ver);
40             if (GR_GL_INVALID_VER == fGLVersion) {
41                 return false;
42             }
43
44             if (!GrGetGLSLGeneration(interface, &fGLSLGeneration)) {
45                 return false;
46             }
47
48             fVendor = GrGLGetVendor(interface);
49
50             fRenderer = GrGLGetRendererFromString(renderer);
51
52             fIsMesa = GrGLIsMesaFromVersionString(ver);
53
54             fIsChromium = GrGLIsChromiumFromRendererString(renderer);
55
56             // This must occur before caps init.
57             fInterface.reset(SkRef(interface));
58
59             return fGLCaps->init(*this, interface);
60         }
61     }
62     return false;
63 }
64
65 bool GrGLContextInfo::isInitialized() const {
66     return NULL != fInterface.get();
67 }
68
69 void GrGLContextInfo::reset() {
70     fInterface.reset(NULL);
71     fGLVersion = GR_GL_VER(0, 0);
72     fGLSLGeneration = static_cast<GrGLSLGeneration>(0);
73     fVendor = kOther_GrGLVendor;
74     fRenderer = kOther_GrGLRenderer;
75     fIsMesa = false;
76     fIsChromium = false;
77     fGLCaps->reset();
78 }