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 #include "GrGLGLSL.h"
10 #include "SkSLCompiler.h"
11
12 ////////////////////////////////////////////////////////////////////////////////
13
Make(sk_sp<const GrGLInterface> interface,const GrContextOptions & options)14 std::unique_ptr<GrGLContext> GrGLContext::Make(sk_sp<const GrGLInterface> interface,
15 const GrContextOptions& options) {
16 if (!interface->validate()) {
17 return nullptr;
18 }
19
20 const GrGLubyte* verUByte;
21 GR_GL_CALL_RET(interface.get(), verUByte, GetString(GR_GL_VERSION));
22 const char* ver = reinterpret_cast<const char*>(verUByte);
23
24 const GrGLubyte* rendererUByte;
25 GR_GL_CALL_RET(interface.get(), rendererUByte, GetString(GR_GL_RENDERER));
26 const char* renderer = reinterpret_cast<const char*>(rendererUByte);
27
28 ConstructorArgs args;
29 args.fGLVersion = GrGLGetVersionFromString(ver);
30 if (GR_GL_INVALID_VER == args.fGLVersion) {
31 return nullptr;
32 }
33
34 if (!GrGLGetGLSLGeneration(interface.get(), &args.fGLSLGeneration)) {
35 return nullptr;
36 }
37
38 args.fVendor = GrGLGetVendor(interface.get());
39
40 args.fRenderer = GrGLGetRendererFromStrings(renderer, interface->fExtensions);
41
42 GrGLGetANGLEInfoFromString(renderer, &args.fANGLEBackend, &args.fANGLEVendor,
43 &args.fANGLERenderer);
44 /*
45 * Qualcomm drivers for the 3xx series have a horrendous bug with some drivers. Though they
46 * claim to support GLES 3.00, some perfectly valid GLSL300 shaders will only compile with
47 * #version 100, and will fail to compile with #version 300 es. In the long term, we
48 * need to lock this down to a specific driver version.
49 * ?????/2015 - This bug is still present in Lollipop pre-mr1
50 * 06/18/2015 - This bug does not affect the nexus 6 (which has an Adreno 4xx).
51 */
52 if (kAdreno3xx_GrGLRenderer == args.fRenderer) {
53 args.fGLSLGeneration = k110_GrGLSLGeneration;
54 }
55
56 // Many ES3 drivers only advertise the ES2 image_external extension, but support the _essl3
57 // extension, and require that it be enabled to work with ESSL3. Other devices require the ES2
58 // extension to be enabled, even when using ESSL3. Some devices appear to only support the ES2
59 // extension. As an extreme (optional) solution, we can fallback to using ES2 shading language
60 // if we want to prioritize external texture support. skbug.com/7713
61 if (kGLES_GrGLStandard == interface->fStandard &&
62 options.fPreferExternalImagesOverES3 &&
63 !options.fDisableDriverCorrectnessWorkarounds &&
64 interface->hasExtension("GL_OES_EGL_image_external") &&
65 args.fGLSLGeneration >= k330_GrGLSLGeneration &&
66 !interface->hasExtension("GL_OES_EGL_image_external_essl3") &&
67 !interface->hasExtension("OES_EGL_image_external_essl3")) {
68 args.fGLSLGeneration = k110_GrGLSLGeneration;
69 }
70
71 GrGLGetDriverInfo(interface->fStandard, args.fVendor, renderer, ver,
72 &args.fDriver, &args.fDriverVersion);
73
74 args.fContextOptions = &options;
75 args.fInterface = std::move(interface);
76
77 return std::unique_ptr<GrGLContext>(new GrGLContext(std::move(args)));
78 }
79
~GrGLContext()80 GrGLContext::~GrGLContext() {
81 delete fCompiler;
82 }
83
compiler() const84 SkSL::Compiler* GrGLContext::compiler() const {
85 if (!fCompiler) {
86 fCompiler = new SkSL::Compiler();
87 }
88 return fCompiler;
89 }
90
GrGLContextInfo(ConstructorArgs && args)91 GrGLContextInfo::GrGLContextInfo(ConstructorArgs&& args) {
92 fInterface = std::move(args.fInterface);
93 fGLVersion = args.fGLVersion;
94 fGLSLGeneration = args.fGLSLGeneration;
95 fVendor = args.fVendor;
96 fRenderer = args.fRenderer;
97 fDriver = args.fDriver;
98 fDriverVersion = args.fDriverVersion;
99 fANGLEBackend = args.fANGLEBackend;
100 fANGLEVendor = args.fANGLEVendor;
101 fANGLERenderer = args.fANGLERenderer;
102
103 fGLCaps = sk_make_sp<GrGLCaps>(*args.fContextOptions, *this, fInterface.get());
104 }
105