| bsalomon@google.com | 373a663 | 2011-10-19 20:43:20 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | #include "SkGLContext.h" |
| 9 | |
| 10 | SkGLContext::SkGLContext() |
| 11 | : fFBO(0) |
| 12 | , fGL(NULL) { |
| 13 | } |
| 14 | |
| 15 | SkGLContext::~SkGLContext() { |
| 16 | SkSafeUnref(fGL); |
| 17 | } |
| 18 | |
| 19 | bool SkGLContext::init(int width, int height) { |
| 20 | if (fGL) { |
| 21 | fGL->unref(); |
| 22 | this->destroyGLContext(); |
| 23 | } |
| 24 | |
| 25 | fGL = this->createGLContext(); |
| 26 | if (fGL) { |
| 27 | GrGLuint cbID; |
| 28 | GrGLuint dsID; |
| 29 | SK_GL(*this, GenFramebuffers(1, &fFBO)); |
| 30 | SK_GL(*this, BindFramebuffer(GR_GL_FRAMEBUFFER, fFBO)); |
| 31 | SK_GL(*this, GenRenderbuffers(1, &cbID)); |
| 32 | SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, cbID)); |
| 33 | SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, |
| 34 | GR_GL_RGBA, |
| 35 | width, height)); |
| 36 | SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| 37 | GR_GL_COLOR_ATTACHMENT0, |
| 38 | GR_GL_RENDERBUFFER, |
| 39 | cbID)); |
| 40 | SK_GL(*this, GenRenderbuffers(1, &dsID)); |
| 41 | SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, dsID)); |
| 42 | SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER, |
| 43 | GR_GL_DEPTH_STENCIL, |
| 44 | width, height)); |
| 45 | SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| 46 | GR_GL_DEPTH_ATTACHMENT, |
| 47 | GR_GL_RENDERBUFFER, |
| 48 | dsID)); |
| 49 | SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, |
| 50 | GR_GL_STENCIL_ATTACHMENT, |
| 51 | GR_GL_RENDERBUFFER, |
| 52 | dsID)); |
| 53 | SK_GL(*this, Viewport(0, 0, width, height)); |
| 54 | SK_GL(*this, ClearStencil(0)); |
| 55 | SK_GL(*this, Clear(GR_GL_STENCIL_BUFFER_BIT)); |
| 56 | |
| 57 | GrGLenum status = |
| 58 | SK_GL(*this, CheckFramebufferStatus(GR_GL_FRAMEBUFFER)); |
| 59 | if (GR_GL_FRAMEBUFFER_COMPLETE != status) { |
| 60 | fFBO = 0; |
| 61 | fGL->unref(); |
| 62 | fGL = NULL; |
| 63 | this->destroyGLContext(); |
| 64 | return false; |
| 65 | } else { |
| 66 | return true; |
| 67 | } |
| 68 | } |
| 69 | return false; |
| 70 | } |