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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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114
gfx/layers/opengl/X11TextureSourceOGL.cpp Normal file
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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/. */
#ifdef GL_PROVIDER_GLX
#include "X11TextureSourceOGL.h"
#include "gfxXlibSurface.h"
#include "gfx2DGlue.h"
namespace mozilla {
namespace layers {
using namespace mozilla::gfx;
X11TextureSourceOGL::X11TextureSourceOGL(CompositorOGL* aCompositor, gfxXlibSurface* aSurface)
: mCompositor(aCompositor)
, mSurface(aSurface)
, mTexture(0)
, mUpdated(false)
{
}
X11TextureSourceOGL::~X11TextureSourceOGL()
{
DeallocateDeviceData();
}
void
X11TextureSourceOGL::DeallocateDeviceData()
{
if (mTexture) {
if (gl() && gl()->MakeCurrent()) {
gl::sGLXLibrary.ReleaseTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
gl()->fDeleteTextures(1, &mTexture);
mTexture = 0;
}
}
}
void
X11TextureSourceOGL::BindTexture(GLenum aTextureUnit,
gfx::SamplingFilter aSamplingFilter)
{
gl()->fActiveTexture(aTextureUnit);
if (!mTexture) {
gl()->fGenTextures(1, &mTexture);
gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
gl::sGLXLibrary.BindTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
} else {
gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
if (mUpdated) {
gl::sGLXLibrary.UpdateTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
mUpdated = false;
}
}
ApplySamplingFilterToBoundTexture(gl(), aSamplingFilter, LOCAL_GL_TEXTURE_2D);
}
IntSize
X11TextureSourceOGL::GetSize() const
{
return mSurface->GetSize();
}
SurfaceFormat
X11TextureSourceOGL::GetFormat() const {
gfxContentType type = mSurface->GetContentType();
return X11TextureSourceOGL::ContentTypeToSurfaceFormat(type);
}
void
X11TextureSourceOGL::SetCompositor(Compositor* aCompositor)
{
CompositorOGL* glCompositor = AssertGLCompositor(aCompositor);
if (mCompositor == glCompositor) {
return;
}
DeallocateDeviceData();
if (glCompositor) {
mCompositor = glCompositor;
}
}
gl::GLContext*
X11TextureSourceOGL::gl() const
{
return mCompositor ? mCompositor->gl() : nullptr;
}
SurfaceFormat
X11TextureSourceOGL::ContentTypeToSurfaceFormat(gfxContentType aType)
{
// X11 uses a switched format and the OGL compositor
// doesn't support ALPHA / A8.
switch (aType) {
case gfxContentType::COLOR:
return SurfaceFormat::R8G8B8X8;
case gfxContentType::COLOR_ALPHA:
return SurfaceFormat::R8G8B8A8;
default:
return SurfaceFormat::UNKNOWN;
}
}
}
}
#endif