Move SkGLContext and some GrGLInterface implementations to skgputest module

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>
-
-#include "gl/mesa/SkMesaGLContext.h"
-#include "gl/GrGLDefines.h"
-
-static const GrGLint gBOGUS_SIZE = 16;
-
-SkMesaGLContext::SkMesaGLContext()
-    : fContext(static_cast<Context>(0))
-    , fImage(nullptr) {
-    GR_STATIC_ASSERT(sizeof(Context) == sizeof(OSMesaContext));
-
-    /* Create an RGBA-mode context */
-#if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305
-    /* specify Z, stencil, accum sizes */
-    fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, nullptr);
-#else
-    fContext = (Context)OSMesaCreateContext(OSMESA_BGRA, nullptr);
-#endif
-    if (!fContext) {
-        SkDebugf("OSMesaCreateContext failed!\n");
-        this->destroyGLContext();
-        return;
-    }
-    // Allocate the image buffer
-    fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE *
-                                           4 * sizeof(GrGLubyte));
-    if (!fImage) {
-        SkDebugf("Alloc image buffer failed!\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    // Bind the buffer to the context and make it current
-    if (!OSMesaMakeCurrent((OSMesaContext)fContext,
-                           fImage,
-                           GR_GL_UNSIGNED_BYTE,
-                           gBOGUS_SIZE,
-                           gBOGUS_SIZE)) {
-        SkDebugf("OSMesaMakeCurrent failed!\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    SkAutoTUnref<const GrGLInterface> gl(GrGLCreateMesaInterface());
-    if (nullptr == gl.get()) {
-        SkDebugf("Could not create GL interface!\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    if (!gl->validate()) {
-        SkDebugf("Could not validate GL interface!\n");
-        this->destroyGLContext();
-        return;
-    }
-
-    this->init(gl.release());
-}
-
-SkMesaGLContext::~SkMesaGLContext() {
-    this->teardown();
-    this->destroyGLContext();
-}
-
-void SkMesaGLContext::destroyGLContext() {
-    if (fImage) {
-        sk_free(fImage);
-        fImage = nullptr;
-    }
-
-    if (fContext) {
-        OSMesaDestroyContext((OSMesaContext)fContext);
-        fContext = static_cast<Context>(0);
-    }
-}
-
-
-
-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::onPlatformSwapBuffers() const { }
-
-GrGLFuncPtr SkMesaGLContext::onPlatformGetProcAddress(const char* procName) const {
-    return OSMesaGetProcAddress(procName);
-}