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gfx/gl/SharedSurfaceEGL.cpp@6474c204b198 (annotated)

gfx/gl/SharedSurfaceEGL.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #include "SharedSurfaceEGL.h"
michael@0 7 #include "GLContextEGL.h"
michael@0 8 #include "GLBlitHelper.h"
michael@0 9 #include "ScopedGLHelpers.h"
michael@0 10 #include "SharedSurfaceGL.h"
michael@0 11 #include "SurfaceFactory.h"
michael@0 12 #include "GLLibraryEGL.h"
michael@0 13 #include "TextureGarbageBin.h"
michael@0 14 #include "GLReadTexImageHelper.h"
michael@0 15
michael@0 16 using namespace mozilla::gfx;
michael@0 17
michael@0 18 namespace mozilla {
michael@0 19 namespace gl {
michael@0 20
michael@0 21 SharedSurface_EGLImage*
michael@0 22 SharedSurface_EGLImage::Create(GLContext* prodGL,
michael@0 23 const GLFormats& formats,
michael@0 24 const gfx::IntSize& size,
michael@0 25 bool hasAlpha,
michael@0 26 EGLContext context)
michael@0 27 {
michael@0 28 GLLibraryEGL* egl = &sEGLLibrary;
michael@0 29 MOZ_ASSERT(egl);
michael@0 30 MOZ_ASSERT(context);
michael@0 31
michael@0 32 if (!HasExtensions(egl, prodGL)) {
michael@0 33 return nullptr;
michael@0 34 }
michael@0 35
michael@0 36 MOZ_ALWAYS_TRUE(prodGL->MakeCurrent());
michael@0 37 GLuint prodTex = CreateTextureForOffscreen(prodGL, formats, size);
michael@0 38 if (!prodTex) {
michael@0 39 return nullptr;
michael@0 40 }
michael@0 41
michael@0 42 EGLClientBuffer buffer = reinterpret_cast<EGLClientBuffer>(prodTex);
michael@0 43 EGLImage image = egl->fCreateImage(egl->Display(), context,
michael@0 44 LOCAL_EGL_GL_TEXTURE_2D, buffer,
michael@0 45 nullptr);
michael@0 46 if (!image) {
michael@0 47 prodGL->fDeleteTextures(1, &prodTex);
michael@0 48 return nullptr;
michael@0 49 }
michael@0 50
michael@0 51 return new SharedSurface_EGLImage(prodGL, egl,
michael@0 52 size, hasAlpha,
michael@0 53 formats, prodTex, image);
michael@0 54 }
michael@0 55
michael@0 56
michael@0 57 bool
michael@0 58 SharedSurface_EGLImage::HasExtensions(GLLibraryEGL* egl, GLContext* gl)
michael@0 59 {
michael@0 60 return egl->HasKHRImageBase() &&
michael@0 61 egl->IsExtensionSupported(GLLibraryEGL::KHR_gl_texture_2D_image) &&
michael@0 62 gl->IsExtensionSupported(GLContext::OES_EGL_image_external);
michael@0 63 }
michael@0 64
michael@0 65 SharedSurface_EGLImage::SharedSurface_EGLImage(GLContext* gl,
michael@0 66 GLLibraryEGL* egl,
michael@0 67 const gfx::IntSize& size,
michael@0 68 bool hasAlpha,
michael@0 69 const GLFormats& formats,
michael@0 70 GLuint prodTex,
michael@0 71 EGLImage image)
michael@0 72 : SharedSurface_GL(SharedSurfaceType::EGLImageShare,
michael@0 73 AttachmentType::GLTexture,
michael@0 74 gl,
michael@0 75 size,
michael@0 76 hasAlpha)
michael@0 77 , mMutex("SharedSurface_EGLImage mutex")
michael@0 78 , mEGL(egl)
michael@0 79 , mFormats(formats)
michael@0 80 , mProdTex(prodTex)
michael@0 81 , mImage(image)
michael@0 82 , mCurConsGL(nullptr)
michael@0 83 , mConsTex(0)
michael@0 84 , mSync(0)
michael@0 85 {}
michael@0 86
michael@0 87 SharedSurface_EGLImage::~SharedSurface_EGLImage()
michael@0 88 {
michael@0 89 mEGL->fDestroyImage(Display(), mImage);
michael@0 90 mImage = 0;
michael@0 91
michael@0 92 mGL->MakeCurrent();
michael@0 93 mGL->fDeleteTextures(1, &mProdTex);
michael@0 94 mProdTex = 0;
michael@0 95
michael@0 96 if (mConsTex) {
michael@0 97 MOZ_ASSERT(mGarbageBin);
michael@0 98 mGarbageBin->Trash(mConsTex);
michael@0 99 mConsTex = 0;
michael@0 100 }
michael@0 101
michael@0 102 if (mSync) {
michael@0 103 // We can't call this unless we have the ext, but we will always have
michael@0 104 // the ext if we have something to destroy.
michael@0 105 mEGL->fDestroySync(Display(), mSync);
michael@0 106 mSync = 0;
michael@0 107 }
michael@0 108 }
michael@0 109
michael@0 110 void
michael@0 111 SharedSurface_EGLImage::Fence()
michael@0 112 {
michael@0 113 MutexAutoLock lock(mMutex);
michael@0 114 mGL->MakeCurrent();
michael@0 115
michael@0 116 if (mEGL->IsExtensionSupported(GLLibraryEGL::KHR_fence_sync) &&
michael@0 117 mGL->IsExtensionSupported(GLContext::OES_EGL_sync))
michael@0 118 {
michael@0 119 if (mSync) {
michael@0 120 MOZ_ALWAYS_TRUE( mEGL->fDestroySync(Display(), mSync) );
michael@0 121 mSync = 0;
michael@0 122 }
michael@0 123
michael@0 124 mSync = mEGL->fCreateSync(Display(),
michael@0 125 LOCAL_EGL_SYNC_FENCE,
michael@0 126 nullptr);
michael@0 127 if (mSync) {
michael@0 128 mGL->fFlush();
michael@0 129 return;
michael@0 130 }
michael@0 131 }
michael@0 132
michael@0 133 MOZ_ASSERT(!mSync);
michael@0 134 mGL->fFinish();
michael@0 135 }
michael@0 136
michael@0 137 bool
michael@0 138 SharedSurface_EGLImage::WaitSync()
michael@0 139 {
michael@0 140 MutexAutoLock lock(mMutex);
michael@0 141 if (!mSync) {
michael@0 142 // We must not be needed.
michael@0 143 return true;
michael@0 144 }
michael@0 145 MOZ_ASSERT(mEGL->IsExtensionSupported(GLLibraryEGL::KHR_fence_sync));
michael@0 146
michael@0 147 // Wait FOREVER, primarily because some NVIDIA (at least Tegra) drivers
michael@0 148 // have ClientWaitSync returning immediately if the timeout delay is anything
michael@0 149 // else than FOREVER.
michael@0 150 //
michael@0 151 // FIXME: should we try to use a finite timeout delay where possible?
michael@0 152 EGLint status = mEGL->fClientWaitSync(Display(),
michael@0 153 mSync,
michael@0 154 0,
michael@0 155 LOCAL_EGL_FOREVER);
michael@0 156
michael@0 157 if (status != LOCAL_EGL_CONDITION_SATISFIED) {
michael@0 158 return false;
michael@0 159 }
michael@0 160
michael@0 161 MOZ_ALWAYS_TRUE( mEGL->fDestroySync(Display(), mSync) );
michael@0 162 mSync = 0;
michael@0 163
michael@0 164 return true;
michael@0 165 }
michael@0 166
michael@0 167
michael@0 168 EGLDisplay
michael@0 169 SharedSurface_EGLImage::Display() const
michael@0 170 {
michael@0 171 return mEGL->Display();
michael@0 172 }
michael@0 173
michael@0 174 void
michael@0 175 SharedSurface_EGLImage::AcquireConsumerTexture(GLContext* consGL, GLuint* out_texture, GLuint* out_target)
michael@0 176 {
michael@0 177 MutexAutoLock lock(mMutex);
michael@0 178 MOZ_ASSERT(!mCurConsGL || consGL == mCurConsGL);
michael@0 179
michael@0 180 if (!mConsTex) {
michael@0 181 consGL->fGenTextures(1, &mConsTex);
michael@0 182 MOZ_ASSERT(mConsTex);
michael@0 183
michael@0 184 ScopedBindTexture autoTex(consGL, mConsTex, LOCAL_GL_TEXTURE_EXTERNAL);
michael@0 185 consGL->fEGLImageTargetTexture2D(LOCAL_GL_TEXTURE_EXTERNAL, mImage);
michael@0 186
michael@0 187 mCurConsGL = consGL;
michael@0 188 mGarbageBin = consGL->TexGarbageBin();
michael@0 189 }
michael@0 190
michael@0 191 MOZ_ASSERT(consGL == mCurConsGL);
michael@0 192 *out_texture = mConsTex;
michael@0 193 *out_target = LOCAL_GL_TEXTURE_EXTERNAL;
michael@0 194 }
michael@0 195
michael@0 196
michael@0 197 SurfaceFactory_EGLImage*
michael@0 198 SurfaceFactory_EGLImage::Create(GLContext* prodGL,
michael@0 199 const SurfaceCaps& caps)
michael@0 200 {
michael@0 201 EGLContext context = GLContextEGL::Cast(prodGL)->GetEGLContext();
michael@0 202
michael@0 203 GLLibraryEGL* egl = &sEGLLibrary;
michael@0 204 if (!SharedSurface_EGLImage::HasExtensions(egl, prodGL)) {
michael@0 205 return nullptr;
michael@0 206 }
michael@0 207
michael@0 208 return new SurfaceFactory_EGLImage(prodGL, context, caps);
michael@0 209 }
michael@0 210
michael@0 211 } /* namespace gfx */
michael@0 212 } /* namespace mozilla */

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