Implement SkGLContext swapBuffers with fence syncs

src/gpu/gl/mesa/SkMesaGLContext.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <GL/osmesa.h>
 
@@ skipping 32 matching lines @@
     if (!OSMesaMakeCurrent((OSMesaContext)fContext,
                            fImage,
                            GR_GL_UNSIGNED_BYTE,
                            gBOGUS_SIZE,
                            gBOGUS_SIZE)) {
         SkDebugf("OSMesaMakeCurrent failed!\n");
         this->destroyGLContext();
         return;
     }
 
-    fGL.reset(GrGLCreateMesaInterface());
-    if (NULL == fGL.get()) {
+    SkAutoTUnref<const GrGLInterface> gl(GrGLCreateMesaInterface());
+    if (NULL == gl.get()) {
         SkDebugf("Could not create GL interface!\n");
         this->destroyGLContext();
         return;
     }
 
-    if (!fGL->validate()) {
+    if (!gl->validate()) {
         SkDebugf("Could not validate GL interface!\n");
         this->destroyGLContext();
         return;
     }
+
+    this->init(gl.detach());
 }
 
 SkMesaGLContext::~SkMesaGLContext() {
+    this->teardown();
     this->destroyGLContext();
 }
 
 void SkMesaGLContext::destroyGLContext() {
-    fGL.reset(NULL);
     if (fImage) {
         sk_free(fImage);
         fImage = NULL;
     }
 
     if (fContext) {
         OSMesaDestroyContext((OSMesaContext)fContext);
         fContext = static_cast<Context>(NULL);
     }
 }
 
 
 
-void SkMesaGLContext::makeCurrent() const {
+void SkMesaGLContext::onPlatformMakeCurrent() const {
     if (fContext) {
         if (!OSMesaMakeCurrent((OSMesaContext)fContext, fImage,
                                GR_GL_UNSIGNED_BYTE, gBOGUS_SIZE, gBOGUS_SIZE)) {
             SkDebugf("Could not make MESA context current.");
         }
     }
 }
 
-void SkMesaGLContext::swapBuffers() const { }
+void SkMesaGLContext::onPlatformSwapBuffers() const { }
+
+GrGLFuncPtr SkMesaGLContext::onPlatformGetProcAddress(const char* procName) const {
+    return OSMesaGetProcAddress(procName);
+}