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comparison: gfx/gl/GLSharedHandleHelpers.h
gfx/gl/GLSharedHandleHelpers.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:e87eee40dc7b |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef GLSHAREDHANDLEHELPERS_H_ | |
| 6 #define GLSHAREDHANDLEHELPERS_H_ | |
| 7 | |
| 8 #include "GLContextTypes.h" | |
| 9 #include "mozilla/gfx/Types.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 namespace gl { | |
| 13 | |
| 14 /** | |
| 15 * Create a new shared GLContext content handle, using the passed buffer as a source. | |
| 16 * Must be released by ReleaseSharedHandle. | |
| 17 */ | |
| 18 SharedTextureHandle CreateSharedHandle(GLContext* gl, | |
| 19 SharedTextureShareType shareType, | |
| 20 void* buffer, | |
| 21 SharedTextureBufferType bufferType); | |
| 22 | |
| 23 /** | |
| 24 * - It is better to call ReleaseSharedHandle before original GLContext destroyed, | |
| 25 * otherwise warning will be thrown on attempt to destroy Texture associated with SharedHandle, depends on backend implementation. | |
| 26 * - It does not require to be called on context where it was created, | |
| 27 * because SharedHandle suppose to keep Context reference internally, | |
| 28 * or don't require specific context at all, for example IPC SharedHandle. | |
| 29 * - Not recommended to call this between AttachSharedHandle and Draw Target call. | |
| 30 * if it is really required for some special backend, then DetachSharedHandle API must be added with related implementation. | |
| 31 * - It is recommended to stop any possible access to SharedHandle (Attachments, pending GL calls) before calling Release, | |
| 32 * otherwise some artifacts might appear or even crash if API backend implementation does not expect that. | |
| 33 * SharedHandle (currently EGLImage) does not require GLContext because it is EGL call, and can be destroyed | |
| 34 * at any time, unless EGLImage have siblings (which are not expected with current API). | |
| 35 */ | |
| 36 void ReleaseSharedHandle(GLContext* gl, | |
| 37 SharedTextureShareType shareType, | |
| 38 SharedTextureHandle sharedHandle); | |
| 39 | |
| 40 | |
| 41 typedef struct { | |
| 42 GLenum mTarget; | |
| 43 gfx::SurfaceFormat mTextureFormat; | |
| 44 gfx::Matrix4x4 mTextureTransform; | |
| 45 } SharedHandleDetails; | |
| 46 | |
| 47 /** | |
| 48 * Returns information necessary for rendering a shared handle. | |
| 49 * These values change depending on what sharing mechanism is in use | |
| 50 */ | |
| 51 bool GetSharedHandleDetails(GLContext* gl, | |
| 52 SharedTextureShareType shareType, | |
| 53 SharedTextureHandle sharedHandle, | |
| 54 SharedHandleDetails& details); | |
| 55 /** | |
| 56 * Attach Shared GL Handle to GL_TEXTURE_2D target | |
| 57 * GLContext must be current before this call | |
| 58 */ | |
| 59 bool AttachSharedHandle(GLContext* gl, | |
| 60 SharedTextureShareType shareType, | |
| 61 SharedTextureHandle sharedHandle); | |
| 62 | |
| 63 /** | |
| 64 * Detach Shared GL Handle from GL_TEXTURE_2D target | |
| 65 */ | |
| 66 void DetachSharedHandle(GLContext* gl, | |
| 67 SharedTextureShareType shareType, | |
| 68 SharedTextureHandle sharedHandle); | |
| 69 | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 #endif |
