gfx/gl/GLBlitTextureImageHelper.h@97036ab72558 (annotated)
gfx/gl/GLBlitTextureImageHelper.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=4 et sw=4 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef GLBLITTEXTUREIMAGEHELPER_H_ |
| michael@0 | 8 | #define GLBLITTEXTUREIMAGEHELPER_H_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "mozilla/Attributes.h" |
| michael@0 | 11 | #include "GLContextTypes.h" |
| michael@0 | 12 | #include "GLConsts.h" |
| michael@0 | 13 | |
| michael@0 | 14 | struct nsIntRect; |
| michael@0 | 15 | |
| michael@0 | 16 | namespace mozilla { |
| michael@0 | 17 | namespace gl { |
| michael@0 | 18 | |
| michael@0 | 19 | class GLContext; |
| michael@0 | 20 | class TextureImage; |
| michael@0 | 21 | |
| michael@0 | 22 | class GLBlitTextureImageHelper MOZ_FINAL |
| michael@0 | 23 | { |
| michael@0 | 24 | // The GLContext is the sole owner of the GLBlitTextureImageHelper. |
| michael@0 | 25 | GLContext* mGL; |
| michael@0 | 26 | |
| michael@0 | 27 | // lazy-initialized things |
| michael@0 | 28 | GLuint mBlitProgram, mBlitFramebuffer; |
| michael@0 | 29 | void UseBlitProgram(); |
| michael@0 | 30 | void SetBlitFramebufferForDestTexture(GLuint aTexture); |
| michael@0 | 31 | |
| michael@0 | 32 | public: |
| michael@0 | 33 | |
| michael@0 | 34 | GLBlitTextureImageHelper(GLContext *gl); |
| michael@0 | 35 | ~GLBlitTextureImageHelper(); |
| michael@0 | 36 | |
| michael@0 | 37 | /** |
| michael@0 | 38 | * Copy a rectangle from one TextureImage into another. The |
| michael@0 | 39 | * source and destination are given in integer coordinates, and |
| michael@0 | 40 | * will be converted to texture coordinates. |
| michael@0 | 41 | * |
| michael@0 | 42 | * For the source texture, the wrap modes DO apply -- it's valid |
| michael@0 | 43 | * to use REPEAT or PAD and expect appropriate behaviour if the source |
| michael@0 | 44 | * rectangle extends beyond its bounds. |
| michael@0 | 45 | * |
| michael@0 | 46 | * For the destination texture, the wrap modes DO NOT apply -- the |
| michael@0 | 47 | * destination will be clipped by the bounds of the texture. |
| michael@0 | 48 | * |
| michael@0 | 49 | * Note: calling this function will cause the following OpenGL state |
| michael@0 | 50 | * to be changed: |
| michael@0 | 51 | * |
| michael@0 | 52 | * - current program |
| michael@0 | 53 | * - framebuffer binding |
| michael@0 | 54 | * - viewport |
| michael@0 | 55 | * - blend state (will be enabled at end) |
| michael@0 | 56 | * - scissor state (will be enabled at end) |
| michael@0 | 57 | * - vertex attrib 0 and 1 (pointer and enable state [enable state will be disabled at exit]) |
| michael@0 | 58 | * - array buffer binding (will be 0) |
| michael@0 | 59 | * - active texture (will be 0) |
| michael@0 | 60 | * - texture 0 binding |
| michael@0 | 61 | */ |
| michael@0 | 62 | void BlitTextureImage(TextureImage *aSrc, const nsIntRect& aSrcRect, |
| michael@0 | 63 | TextureImage *aDst, const nsIntRect& aDstRect); |
| michael@0 | 64 | }; |
| michael@0 | 65 | |
| michael@0 | 66 | } |
| michael@0 | 67 | } |
| michael@0 | 68 | |
| michael@0 | 69 | #endif // GLBLITTEXTUREIMAGEHELPER_H_ |
