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81 lines
2.2 KiB
81 lines
2.2 KiB
/* |
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* Copyright 2017 Google Inc. |
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* |
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* Use of this source code is governed by a BSD-style license that can be |
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* found in the LICENSE file. |
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*/ |
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#include "fiddle_main.h" |
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#include <EGL/egl.h> |
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#include <GLES2/gl2.h> |
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static const EGLint configAttribs[] = { |
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EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, |
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EGL_BLUE_SIZE, 8, |
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EGL_GREEN_SIZE, 8, |
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EGL_RED_SIZE, 8, |
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EGL_DEPTH_SIZE, 8, |
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, |
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EGL_NONE |
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}; |
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static const int pbufferWidth = 9; |
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static const int pbufferHeight = 9; |
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static const EGLint pbufferAttribs[] = { |
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EGL_WIDTH, pbufferWidth, |
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EGL_HEIGHT, pbufferHeight, |
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EGL_NONE, |
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}; |
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// create_grcontext implementation for EGL. |
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sk_sp<GrContext> create_grcontext(std::ostringstream &driverinfo) { |
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EGLDisplay eglDpy = eglGetDisplay(EGL_DEFAULT_DISPLAY); |
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if (EGL_NO_DISPLAY == eglDpy) { |
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return nullptr; |
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} |
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EGLint major, minor; |
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if (EGL_TRUE != eglInitialize(eglDpy, &major, &minor)) { |
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return nullptr; |
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} |
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EGLint numConfigs; |
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EGLConfig eglCfg; |
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if (EGL_TRUE != eglChooseConfig(eglDpy, configAttribs, &eglCfg, 1, &numConfigs)) { |
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return nullptr; |
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} |
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EGLSurface eglSurf = eglCreatePbufferSurface(eglDpy, eglCfg, pbufferAttribs); |
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if (EGL_NO_SURFACE == eglSurf) { |
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return nullptr; |
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} |
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if (EGL_TRUE != eglBindAPI(EGL_OPENGL_API)) { |
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return nullptr; |
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} |
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EGLContext eglCtx = eglCreateContext(eglDpy, eglCfg, EGL_NO_CONTEXT, NULL); |
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if (EGL_NO_CONTEXT == eglCtx) { |
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return nullptr; |
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} |
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if (EGL_FALSE == eglMakeCurrent(eglDpy, eglSurf, eglSurf, eglCtx)) { |
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return nullptr; |
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} |
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driverinfo << "EGL " << major << "." << minor << "\n"; |
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GrGLGetStringProc getString = (GrGLGetStringProc )eglGetProcAddress("glGetString"); |
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driverinfo << "GL Versionr: " << getString(GL_VERSION) << "\n"; |
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driverinfo << "GL Vendor: " << getString(GL_VENDOR) << "\n"; |
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driverinfo << "GL Renderer: " << getString(GL_RENDERER) << "\n"; |
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driverinfo << "GL Extensions: " << getString(GL_EXTENSIONS) << "\n"; |
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auto interface = GrGLCreateNativeInterface(); |
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if (!interface) { |
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return nullptr; |
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} |
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eglTerminate(eglDpy); |
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return sk_sp<GrContext>(GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)interface)); |
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}
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