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: #include "MacIOSurfaceTextureHostOGL.h"
michael@0: #include "mozilla/gfx/MacIOSurface.h"
michael@0: #include "mozilla/layers/CompositorOGL.h"
michael@0: #include "GLContextCGL.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: MacIOSurfaceTextureHostOGL::MacIOSurfaceTextureHostOGL(TextureFlags aFlags,
michael@0:                                                        const SurfaceDescriptorMacIOSurface& aDescriptor)
michael@0:   : TextureHost(aFlags)
michael@0: {
michael@0:   mSurface = MacIOSurface::LookupSurface(aDescriptor.surface(),
michael@0:                                          aDescriptor.scaleFactor(),
michael@0:                                          aDescriptor.hasAlpha());
michael@0: }
michael@0: 
michael@0: bool
michael@0: MacIOSurfaceTextureHostOGL::Lock()
michael@0: {
michael@0:   if (!mCompositor || !mSurface) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   if (!mTextureSource) {
michael@0:     mTextureSource = new MacIOSurfaceTextureSourceOGL(mCompositor, mSurface);
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: MacIOSurfaceTextureHostOGL::SetCompositor(Compositor* aCompositor)
michael@0: {
michael@0:   CompositorOGL* glCompositor = static_cast<CompositorOGL*>(aCompositor);
michael@0:   mCompositor = glCompositor;
michael@0:   if (mTextureSource) {
michael@0:     mTextureSource->SetCompositor(glCompositor);
michael@0:   }
michael@0: }
michael@0: 
michael@0: gfx::SurfaceFormat
michael@0: MacIOSurfaceTextureHostOGL::GetFormat() const {
michael@0:   if (!mSurface) {
michael@0:     return gfx::SurfaceFormat::UNKNOWN;
michael@0:   }
michael@0:   return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8 : gfx::SurfaceFormat::B8G8R8X8;
michael@0: }
michael@0: 
michael@0: gfx::IntSize
michael@0: MacIOSurfaceTextureHostOGL::GetSize() const {
michael@0:   if (!mSurface) {
michael@0:     return gfx::IntSize();
michael@0:   }
michael@0:   return gfx::IntSize(mSurface->GetDevicePixelWidth(),
michael@0:                       mSurface->GetDevicePixelHeight());
michael@0: }
michael@0: 
michael@0: MacIOSurfaceTextureSourceOGL::MacIOSurfaceTextureSourceOGL(
michael@0:                                 CompositorOGL* aCompositor,
michael@0:                                 MacIOSurface* aSurface)
michael@0:   : mCompositor(aCompositor)
michael@0:   , mSurface(aSurface)
michael@0: {}
michael@0: 
michael@0: MacIOSurfaceTextureSourceOGL::~MacIOSurfaceTextureSourceOGL()
michael@0: {}
michael@0: 
michael@0: gfx::IntSize
michael@0: MacIOSurfaceTextureSourceOGL::GetSize() const
michael@0: {
michael@0:   return gfx::IntSize(mSurface->GetDevicePixelWidth(),
michael@0:                       mSurface->GetDevicePixelHeight());
michael@0: }
michael@0: 
michael@0: gfx::SurfaceFormat
michael@0: MacIOSurfaceTextureSourceOGL::GetFormat() const
michael@0: {
michael@0:   return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8 : gfx::SurfaceFormat::B8G8R8X8;
michael@0: }
michael@0: 
michael@0: void
michael@0: MacIOSurfaceTextureSourceOGL::BindTexture(GLenum aTextureUnit, gfx::Filter aFilter)
michael@0: {
michael@0:   if (!gl()) {
michael@0:     NS_WARNING("Trying to bind a texture without a GLContext");
michael@0:     return;
michael@0:   }
michael@0:   GLuint tex = mCompositor->GetTemporaryTexture(GetTextureTarget(), aTextureUnit);
michael@0: 
michael@0:   gl()->fActiveTexture(aTextureUnit);
michael@0:   gl()->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, tex);
michael@0:   mSurface->CGLTexImageIOSurface2D(gl::GLContextCGL::Cast(gl())->GetCGLContext());
michael@0:   ApplyFilterToBoundTexture(gl(), aFilter, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
michael@0: }
michael@0: 
michael@0: void
michael@0: MacIOSurfaceTextureSourceOGL::SetCompositor(Compositor* aCompositor)
michael@0: {
michael@0:   mCompositor = static_cast<CompositorOGL*>(aCompositor);
michael@0: }
michael@0: 
michael@0: gl::GLContext*
michael@0: MacIOSurfaceTextureSourceOGL::gl() const
michael@0: {
michael@0:   return mCompositor ? mCompositor->gl() : nullptr;
michael@0: }
michael@0: 
michael@0: }
michael@0: }