michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifdef GL_PROVIDER_GLX
michael@0: 
michael@0: #include "X11TextureSourceOGL.h"
michael@0: #include "mozilla/layers/CompositorOGL.h"
michael@0: #include "gfxXlibSurface.h"
michael@0: #include "gfx2DGlue.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::layers;
michael@0: using namespace mozilla::gfx;
michael@0: 
michael@0: X11TextureSourceOGL::X11TextureSourceOGL(CompositorOGL* aCompositor, gfxXlibSurface* aSurface)
michael@0:   : mCompositor(aCompositor)
michael@0:   , mSurface(aSurface)
michael@0:   , mTexture(0)
michael@0: {
michael@0: }
michael@0: 
michael@0: X11TextureSourceOGL::~X11TextureSourceOGL()
michael@0: {
michael@0:   DeallocateDeviceData();
michael@0: }
michael@0: 
michael@0: void
michael@0: X11TextureSourceOGL::DeallocateDeviceData()
michael@0: {
michael@0:   if (mTexture) {
michael@0:     if (gl() && gl()->MakeCurrent()) {
michael@0:       gl::sGLXLibrary.ReleaseTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
michael@0:       gl()->fDeleteTextures(1, &mTexture);
michael@0:       mTexture = 0;
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: X11TextureSourceOGL::BindTexture(GLenum aTextureUnit, gfx::Filter aFilter)
michael@0: {
michael@0:   gl()->fActiveTexture(aTextureUnit);
michael@0: 
michael@0:   if (!mTexture) {
michael@0:     gl()->fGenTextures(1, &mTexture);
michael@0: 
michael@0:     gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
michael@0: 
michael@0:     gl::sGLXLibrary.BindTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
michael@0:   } else {
michael@0:     gl()->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
michael@0:     gl::sGLXLibrary.UpdateTexImage(mSurface->XDisplay(), mSurface->GetGLXPixmap());
michael@0:   }
michael@0: 
michael@0:   ApplyFilterToBoundTexture(gl(), aFilter, LOCAL_GL_TEXTURE_2D);
michael@0: }
michael@0: 
michael@0: IntSize
michael@0: X11TextureSourceOGL::GetSize() const
michael@0: {
michael@0:   return ToIntSize(mSurface->GetSize());
michael@0: }
michael@0: 
michael@0: SurfaceFormat
michael@0: X11TextureSourceOGL::GetFormat() const {
michael@0:   gfxContentType type = mSurface->GetContentType();
michael@0:   return X11TextureSourceOGL::ContentTypeToSurfaceFormat(type);
michael@0: }
michael@0: 
michael@0: void
michael@0: X11TextureSourceOGL::SetCompositor(Compositor* aCompositor)
michael@0: {
michael@0:   MOZ_ASSERT(!aCompositor || aCompositor->GetBackendType() == LayersBackend::LAYERS_OPENGL);
michael@0:   if (mCompositor == aCompositor) {
michael@0:     return;
michael@0:   }
michael@0:   DeallocateDeviceData();
michael@0:   mCompositor = static_cast<CompositorOGL*>(aCompositor);
michael@0: }
michael@0: 
michael@0: gl::GLContext*
michael@0: X11TextureSourceOGL::gl() const
michael@0: {
michael@0:   return mCompositor ? mCompositor->gl() : nullptr;
michael@0: }
michael@0: 
michael@0: SurfaceFormat
michael@0: X11TextureSourceOGL::ContentTypeToSurfaceFormat(gfxContentType aType)
michael@0: {
michael@0:   // X11 uses a switched format and the OGL compositor
michael@0:   // doesn't support ALPHA / A8.
michael@0:   switch (aType) {
michael@0:     case gfxContentType::COLOR:
michael@0:       return SurfaceFormat::R8G8B8X8;
michael@0:     case gfxContentType::COLOR_ALPHA:
michael@0:       return SurfaceFormat::R8G8B8A8;
michael@0:     default:
michael@0:       return SurfaceFormat::UNKNOWN;
michael@0:   }
michael@0: }
michael@0: 
michael@0: #endif