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/*
* 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 "SkGLContext.h"
SkGLContext::SkGLContext()
: fFBO(0)
, fGL(NULL) {
}
SkGLContext::~SkGLContext() {
SkSafeUnref(fGL);
}
bool SkGLContext::init(int width, int height) {
if (fGL) {
fGL->unref();
this->destroyGLContext();
}
fGL = this->createGLContext();
if (fGL) {
GrGLuint cbID;
GrGLuint dsID;
SK_GL(*this, GenFramebuffers(1, &fFBO));
SK_GL(*this, BindFramebuffer(GR_GL_FRAMEBUFFER, fFBO));
SK_GL(*this, GenRenderbuffers(1, &cbID));
SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, cbID));
SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER,
GR_GL_RGBA,
width, height));
SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_RENDERBUFFER,
cbID));
SK_GL(*this, GenRenderbuffers(1, &dsID));
SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, dsID));
SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER,
GR_GL_DEPTH_STENCIL,
width, height));
SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER,
dsID));
SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER,
dsID));
SK_GL(*this, Viewport(0, 0, width, height));
SK_GL(*this, ClearStencil(0));
SK_GL(*this, Clear(GR_GL_STENCIL_BUFFER_BIT));
GrGLenum status =
SK_GL(*this, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (GR_GL_FRAMEBUFFER_COMPLETE != status) {
fFBO = 0;
fGL->unref();
fGL = NULL;
this->destroyGLContext();
return false;
} else {
return true;
}
}
return false;
}
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