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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /gfx/gl/EGLUtils.cpp | |
parent | 15477ed9af4859dacb069040b5d4de600803d3bc (diff) | |
download | uxp-ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299.tar.gz |
Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/gl/EGLUtils.cpp')
-rw-r--r-- | gfx/gl/EGLUtils.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/gfx/gl/EGLUtils.cpp b/gfx/gl/EGLUtils.cpp new file mode 100644 index 0000000000..bc55d7fb03 --- /dev/null +++ b/gfx/gl/EGLUtils.cpp @@ -0,0 +1,114 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "EGLUtils.h" + +#include "GLContextEGL.h" + +namespace mozilla { +namespace gl { + +bool +DoesEGLContextSupportSharingWithEGLImage(GLContext* gl) +{ + return sEGLLibrary.HasKHRImageBase() && + sEGLLibrary.HasKHRImageTexture2D() && + gl->IsExtensionSupported(GLContext::OES_EGL_image); +} + +EGLImage +CreateEGLImage(GLContext* gl, GLuint tex) +{ + MOZ_ASSERT(DoesEGLContextSupportSharingWithEGLImage(gl)); + + EGLClientBuffer clientBuffer = (EGLClientBuffer)((uint64_t)tex); + EGLContext eglContext = GLContextEGL::Cast(gl)->mContext; + EGLImage image = sEGLLibrary.fCreateImage(EGL_DISPLAY(), + eglContext, + LOCAL_EGL_GL_TEXTURE_2D, + clientBuffer, + nullptr); + return image; +} + +//////////////////////////////////////////////////////////////////////// +// EGLImageWrapper + +/*static*/ EGLImageWrapper* +EGLImageWrapper::Create(GLContext* gl, GLuint tex) +{ + MOZ_ASSERT(DoesEGLContextSupportSharingWithEGLImage(gl)); + + GLLibraryEGL& library = sEGLLibrary; + EGLDisplay display = EGL_DISPLAY(); + EGLContext eglContext = GLContextEGL::Cast(gl)->mContext; + EGLClientBuffer clientBuffer = (EGLClientBuffer)((uint64_t)tex); + EGLImage image = library.fCreateImage(display, + eglContext, + LOCAL_EGL_GL_TEXTURE_2D, + clientBuffer, + nullptr); + if (!image) { +#ifdef DEBUG + printf_stderr("Could not create EGL images: ERROR (0x%04x)\n", + sEGLLibrary.fGetError()); +#endif + return nullptr; + } + + return new EGLImageWrapper(library, display, image); +} + +EGLImageWrapper::~EGLImageWrapper() +{ + mLibrary.fDestroyImage(mDisplay, mImage); +} + +bool +EGLImageWrapper::FenceSync(GLContext* gl) +{ + MOZ_ASSERT(!mSync); + + if (mLibrary.IsExtensionSupported(GLLibraryEGL::KHR_fence_sync)) { + mSync = mLibrary.fCreateSync(mDisplay, + LOCAL_EGL_SYNC_FENCE, + nullptr); + // We need to flush to make sure the sync object enters the command stream; + // we can't use EGL_SYNC_FLUSH_COMMANDS_BIT at wait time, because the wait + // happens on a different thread/context. + gl->fFlush(); + } + + if (!mSync) { + // we failed to create one, so just do a finish + gl->fFinish(); + } + + return true; +} + +bool +EGLImageWrapper::ClientWaitSync() +{ + if (!mSync) { + // if we have no sync object, then we did a Finish() earlier + return true; + } + + // wait at most 1 second; this should really be never/rarely hit + const uint64_t ns_per_ms = 1000 * 1000; + EGLTime timeout = 1000 * ns_per_ms; + + EGLint result = mLibrary.fClientWaitSync(mDisplay, + mSync, + 0, + timeout); + mLibrary.fDestroySync(mDisplay, mSync); + mSync = nullptr; + + return result == LOCAL_EGL_CONDITION_SATISFIED; +} + +} // namespace gl +} // namespace mozilla |