1 /* 2 * Copyright 2014 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 #include "include/gpu/ganesh/gl/glx/GrGLMakeGLXInterface.h" 8 9 #include "include/core/SkRefCnt.h" 10 #include "include/gpu/ganesh/gl/GrGLAssembleInterface.h" 11 #include "include/gpu/ganesh/gl/GrGLInterface.h" 12 #include "include/private/base/SkAssert.h" 13 14 // Define this to get a prototype for glXGetProcAddress on some systems 15 #define GLX_GLXEXT_PROTOTYPES 1 16 #include <GL/gl.h> 17 #include <GL/glx.h> 18 #include <string.h> 19 glx_get(void * ctx,const char name[])20static GrGLFuncPtr glx_get(void* ctx, const char name[]) { 21 // Avoid calling glXGetProcAddress() for EGL procs. 22 // We don't expect it to ever succeed, but somtimes it returns non-null anyway. 23 if (0 == strncmp(name, "egl", 3)) { 24 return nullptr; 25 } 26 27 SkASSERT(nullptr == ctx); 28 SkASSERT(glXGetCurrentContext()); 29 return glXGetProcAddress(reinterpret_cast<const GLubyte*>(name)); 30 } 31 32 namespace GrGLInterfaces { MakeGLX()33sk_sp<const GrGLInterface> MakeGLX() { 34 if (nullptr == glXGetCurrentContext()) { 35 return nullptr; 36 } 37 38 return GrGLMakeAssembledInterface(nullptr, glx_get); 39 } 40 } // namespace GrGLInterfaces 41 42 #if !defined(SK_DISABLE_LEGACY_GLXINTERFACE_FACTORY) GrGLMakeGLXInterface()43sk_sp<const GrGLInterface> GrGLMakeGLXInterface() { return GrGLInterfaces::MakeGLX(); } 44 #endif 45