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            /*
51             * Qualcomm drivers have a horrendous bug with some drivers. Though they claim to
52             * support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
53             * #version 100, and will fail to compile with #version 300 es.  In the long term, we
54             * need to lock this down to a specific driver version.
55             */
56            if (kQualcomm_GrGLVendor == fVendor) {
57                fGLSLGeneration = k110_GrGLSLGeneration;
58            }
59
60            fRenderer = GrGLGetRendererFromString(renderer);
61
62            fIsMesa = GrGLIsMesaFromVersionString(ver);
63
64            fIsChromium = GrGLIsChromiumFromRendererString(renderer);
65
66            // This must occur before caps init.
67            fInterface.reset(SkRef(interface));
68
69            return fGLCaps->init(*this, interface);
70        }
71    }
72    return false;
73}
74
75bool GrGLContextInfo::isInitialized() const { return SkToBool(fInterface.get()); }
76
77void GrGLContextInfo::reset() {
78    fInterface.reset(NULL);
79    fGLVersion = GR_GL_VER(0, 0);
80    fGLSLGeneration = static_cast<GrGLSLGeneration>(0);
81    fVendor = kOther_GrGLVendor;
82    fRenderer = kOther_GrGLRenderer;
83    fIsMesa = false;
84    fIsChromium = false;
85    fGLCaps->reset();
86}
87