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
12GrGLContextInfo& 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
24bool 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
65bool GrGLContextInfo::isInitialized() const {
66    return NULL != fInterface.get();
67}
68
69void 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}
79