gecko-dev/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp

117 строки
3.2 KiB
C++

/* -*- 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/. */
#include "MacIOSurfaceTextureHostOGL.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "mozilla/layers/CompositorOGL.h"
#include "GLContextCGL.h"
namespace mozilla {
namespace layers {
MacIOSurfaceTextureHostOGL::MacIOSurfaceTextureHostOGL(TextureFlags aFlags,
const SurfaceDescriptorMacIOSurface& aDescriptor)
: TextureHost(aFlags)
{
mSurface = MacIOSurface::LookupSurface(aDescriptor.surface(),
aDescriptor.scaleFactor(),
aDescriptor.hasAlpha());
}
bool
MacIOSurfaceTextureHostOGL::Lock()
{
if (!mCompositor || !mSurface) {
return false;
}
if (!mTextureSource) {
mTextureSource = new MacIOSurfaceTextureSourceOGL(mCompositor, mSurface);
}
return true;
}
void
MacIOSurfaceTextureHostOGL::SetCompositor(Compositor* aCompositor)
{
CompositorOGL* glCompositor = static_cast<CompositorOGL*>(aCompositor);
mCompositor = glCompositor;
if (mTextureSource) {
mTextureSource->SetCompositor(glCompositor);
}
}
gfx::SurfaceFormat
MacIOSurfaceTextureHostOGL::GetFormat() const {
if (!mSurface) {
return gfx::SurfaceFormat::UNKNOWN;
}
return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8
: gfx::SurfaceFormat::R8G8B8X8;
}
gfx::IntSize
MacIOSurfaceTextureHostOGL::GetSize() const {
if (!mSurface) {
return gfx::IntSize();
}
return gfx::IntSize(mSurface->GetDevicePixelWidth(),
mSurface->GetDevicePixelHeight());
}
MacIOSurfaceTextureSourceOGL::MacIOSurfaceTextureSourceOGL(
CompositorOGL* aCompositor,
MacIOSurface* aSurface)
: mCompositor(aCompositor)
, mSurface(aSurface)
{}
MacIOSurfaceTextureSourceOGL::~MacIOSurfaceTextureSourceOGL()
{}
gfx::IntSize
MacIOSurfaceTextureSourceOGL::GetSize() const
{
return gfx::IntSize(mSurface->GetDevicePixelWidth(),
mSurface->GetDevicePixelHeight());
}
gfx::SurfaceFormat
MacIOSurfaceTextureSourceOGL::GetFormat() const
{
return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8
: gfx::SurfaceFormat::R8G8B8X8;
}
void
MacIOSurfaceTextureSourceOGL::BindTexture(GLenum aTextureUnit, gfx::Filter aFilter)
{
if (!gl()) {
NS_WARNING("Trying to bind a texture without a GLContext");
return;
}
GLuint tex = mCompositor->GetTemporaryTexture(GetTextureTarget(), aTextureUnit);
gl()->fActiveTexture(aTextureUnit);
gl()->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, tex);
mSurface->CGLTexImageIOSurface2D(gl::GLContextCGL::Cast(gl())->GetCGLContext());
ApplyFilterToBoundTexture(gl(), aFilter, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
}
void
MacIOSurfaceTextureSourceOGL::SetCompositor(Compositor* aCompositor)
{
mCompositor = static_cast<CompositorOGL*>(aCompositor);
}
gl::GLContext*
MacIOSurfaceTextureSourceOGL::gl() const
{
return mCompositor ? mCompositor->gl() : nullptr;
}
}
}