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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "X11TextureSourceOGL.h"
#include "gfxXlibSurface.h"
#include "gfx2DGlue.h"
#include "GLContext.h"
namespace mozilla::layers {
using namespace mozilla::gfx;
X11TextureSourceOGL::X11TextureSourceOGL(CompositorOGL* aCompositor,
gfxXlibSurface* aSurface)
: mGL(aCompositor->gl()),
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::SetTextureSourceProvider(
TextureSourceProvider* aProvider) {
gl::GLContext* newGL = aProvider ? aProvider->GetGLContext() : nullptr;
if (mGL != newGL) {
DeallocateDeviceData();
}
mGL = newGL;
}
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;
}
}
} // namespace mozilla::layers
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