The Tor Browser: gfx/layers/opengl/X11TextureSourceOGL.cpp@6474c204b198

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

     1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifdef GL_PROVIDER_GLX

     8 #include "X11TextureSourceOGL.h"

     9 #include "mozilla/layers/CompositorOGL.h"

    10 #include "gfxXlibSurface.h"

    11 #include "gfx2DGlue.h"

    13 using namespace mozilla;

    14 using namespace mozilla::layers;

    15 using namespace mozilla::gfx;

    17 X11TextureSourceOGL::X11TextureSourceOGL(CompositorOGL* aCompositor, gfxXlibSurface* aSurface)

    18   : mCompositor(aCompositor)

    19   , mSurface(aSurface)

    20   , mTexture(0)

    21 {

    22 }

    24 X11TextureSourceOGL::~X11TextureSourceOGL()

    25 {

    26   DeallocateDeviceData();

    27 }

    29 void

    30 X11TextureSourceOGL::DeallocateDeviceData()

    31 {

    32   if (mTexture) {

    33     if (gl() && gl()->MakeCurrent()) {

    34       gl::sGLXLibrary.ReleaseTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());

    35       gl()->fDeleteTextures(1, &mTexture);

    36       mTexture = 0;

    37     }

    38   }

    39 }

    41 void

    42 X11TextureSourceOGL::BindTexture(GLenum aTextureUnit, gfx::Filter aFilter)

    43 {

    44   gl()->fActiveTexture(aTextureUnit);

    46   if (!mTexture) {

    47     gl()->fGenTextures(1, &mTexture);

    49     gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);

    51     gl::sGLXLibrary.BindTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());

    52   } else {

    53     gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);

    54     gl::sGLXLibrary.UpdateTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());

    55   }

    57   ApplyFilterToBoundTexture(gl(), aFilter, LOCAL_GL_TEXTURE_2D);

    58 }

    60 IntSize

    61 X11TextureSourceOGL::GetSize() const

    62 {

    63   return ToIntSize(mSurface->GetSize());

    64 }

    66 SurfaceFormat

    67 X11TextureSourceOGL::GetFormat() const {

    68   gfxContentType type = mSurface->GetContentType();

    69   return X11TextureSourceOGL::ContentTypeToSurfaceFormat(type);

    70 }

    72 void

    73 X11TextureSourceOGL::SetCompositor(Compositor* aCompositor)

    74 {

    75   MOZ_ASSERT(!aCompositor || aCompositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);

    76   if (mCompositor == aCompositor) {

    77     return;

    78   }

    79   DeallocateDeviceData();

    80   mCompositor = static_cast<CompositorOGL*>(aCompositor);

    81 }

    83 gl::GLContext*

    84 X11TextureSourceOGL::gl() const

    85 {

    86   return mCompositor ? mCompositor->gl() : nullptr;

    87 }

    89 SurfaceFormat

    90 X11TextureSourceOGL::ContentTypeToSurfaceFormat(gfxContentType aType)

    91 {

    92   // X11 uses a switched format and the OGL compositor

    93   // doesn't support ALPHA / A8.

    94   switch (aType) {

    95     case gfxContentType::COLOR:

    96       return SurfaceFormat::R8G8B8X8;

    97     case gfxContentType::COLOR_ALPHA:

    98       return SurfaceFormat::R8G8B8A8;

    99     default:

   100       return SurfaceFormat::UNKNOWN;

   101   }

   102 }

   104 #endif

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