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 "src/gpu/gl/GrGLContext.h"
9#include "src/gpu/gl/GrGLGLSL.h"
10#include "src/sksl/SkSLCompiler.h"
11
12#ifdef SK_BUILD_FOR_ANDROID
13#include <sys/system_properties.h>
14#endif
15
16////////////////////////////////////////////////////////////////////////////////
17
18std::unique_ptr<GrGLContext> GrGLContext::Make(sk_sp<const GrGLInterface> interface,
19 const GrContextOptions& options) {
20 if (!interface->validate()) {
21 return nullptr;
22 }
23
24 const GrGLubyte* verUByte;
25 GR_GL_CALL_RET(interface.get(), verUByte, GetString(GR_GL_VERSION));
26 const char* ver = reinterpret_cast<const char*>(verUByte);
27
28 const GrGLubyte* rendererUByte;
29 GR_GL_CALL_RET(interface.get(), rendererUByte, GetString(GR_GL_RENDERER));
30 const char* renderer = reinterpret_cast<const char*>(rendererUByte);
31
32 ConstructorArgs args;
33 args.fGLVersion = GrGLGetVersionFromString(ver);
34 if (GR_GL_INVALID_VER == args.fGLVersion) {
35 return nullptr;
36 }
37
38 if (!GrGLGetGLSLGeneration(interface.get(), &args.fGLSLGeneration)) {
39 return nullptr;
40 }
41
42 args.fVendor = GrGLGetVendor(interface.get());
43
44 args.fRenderer = GrGLGetRendererFromStrings(renderer, interface->fExtensions);
45
46 GrGLGetANGLEInfoFromString(renderer, &args.fANGLEBackend, &args.fANGLEVendor,
47 &args.fANGLERenderer);
48
49 /*
50 * Qualcomm drivers for the 3xx series have a horrendous bug with some drivers. Though they
51 * claim to support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
52 * #version 100, and will fail to compile with #version 300 es. In the long term, we
53 * need to lock this down to a specific driver version.
54 * ?????/2019 - Qualcomm has fixed this for Android O+ devices (API 26+)
55 * ?????/2015 - This bug is still present in Lollipop pre-mr1
56 * 06/18/2015 - This bug does not affect the nexus 6 (which has an Adreno 4xx).
57 */
58#ifdef SK_BUILD_FOR_ANDROID
59 if (!options.fDisableDriverCorrectnessWorkarounds &&
60 kAdreno3xx_GrGLRenderer == args.fRenderer) {
61 char androidAPIVersion[PROP_VALUE_MAX];
62 int strLength = __system_property_get("ro.build.version.sdk", androidAPIVersion);
63 if (strLength == 0 || atoi(androidAPIVersion) < 26) {
64 args.fGLSLGeneration = k110_GrGLSLGeneration;
65 }
66 }
67#endif
68
69 // Many ES3 drivers only advertise the ES2 image_external extension, but support the _essl3
70 // extension, and require that it be enabled to work with ESSL3. Other devices require the ES2
71 // extension to be enabled, even when using ESSL3. Some devices appear to only support the ES2
72 // extension. As an extreme (optional) solution, we can fallback to using ES2 shading language
73 // if we want to prioritize external texture support. skbug.com/7713
74 if (GR_IS_GR_GL_ES(interface->fStandard) &&
75 options.fPreferExternalImagesOverES3 &&
76 !options.fDisableDriverCorrectnessWorkarounds &&
77 interface->hasExtension("GL_OES_EGL_image_external") &&
78 args.fGLSLGeneration >= k330_GrGLSLGeneration &&
79 !interface->hasExtension("GL_OES_EGL_image_external_essl3") &&
80 !interface->hasExtension("OES_EGL_image_external_essl3")) {
81 args.fGLSLGeneration = k110_GrGLSLGeneration;
82 }
83
84 GrGLGetDriverInfo(interface->fStandard, args.fVendor, renderer, ver,
85 &args.fDriver, &args.fDriverVersion);
86
87 args.fContextOptions = &options;
88 args.fInterface = std::move(interface);
89
90 return std::unique_ptr<GrGLContext>(new GrGLContext(std::move(args)));
91}
92
93GrGLContext::~GrGLContext() {
94 delete fCompiler;
95}
96
97SkSL::Compiler* GrGLContext::compiler() const {
98 if (!fCompiler) {
99 fCompiler = new SkSL::Compiler();
100 }
101 return fCompiler;
102}
103
104GrGLContextInfo::GrGLContextInfo(ConstructorArgs&& args) {
105 fInterface = std::move(args.fInterface);
106 fGLVersion = args.fGLVersion;
107 fGLSLGeneration = args.fGLSLGeneration;
108 fVendor = args.fVendor;
109 fRenderer = args.fRenderer;
110 fDriver = args.fDriver;
111 fDriverVersion = args.fDriverVersion;
112 fANGLEBackend = args.fANGLEBackend;
113 fANGLEVendor = args.fANGLEVendor;
114 fANGLERenderer = args.fANGLERenderer;
115
116 fGLCaps = sk_make_sp<GrGLCaps>(*args.fContextOptions, *this, fInterface.get());
117}
118