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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/. */
#include "MacIOSurfaceTextureHostOGL.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "GLContextCGL.h"
namespace mozilla {
namespace layers {
MacIOSurfaceTextureHostOGL::MacIOSurfaceTextureHostOGL(TextureFlags aFlags,
const SurfaceDescriptorMacIOSurface& aDescriptor)
: TextureHost(aFlags)
{
MOZ_COUNT_CTOR(MacIOSurfaceTextureHostOGL);
mSurface = MacIOSurface::LookupSurface(aDescriptor.surfaceId(),
aDescriptor.scaleFactor(),
!aDescriptor.isOpaque());
}
MacIOSurfaceTextureHostOGL::~MacIOSurfaceTextureHostOGL()
{
MOZ_COUNT_DTOR(MacIOSurfaceTextureHostOGL);
}
GLTextureSource*
MacIOSurfaceTextureHostOGL::CreateTextureSourceForPlane(size_t aPlane)
{
MOZ_ASSERT(mSurface);
GLuint textureHandle;
gl::GLContext* gl = mCompositor->gl();
gl->fGenTextures(1, &textureHandle);
gl->fBindTexture(LOCAL_GL_TEXTURE_RECTANGLE_ARB, textureHandle);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
mSurface->CGLTexImageIOSurface2D(gl::GLContextCGL::Cast(gl)->GetCGLContext(), aPlane);
return new GLTextureSource(mCompositor, textureHandle, LOCAL_GL_TEXTURE_RECTANGLE_ARB,
gfx::IntSize(mSurface->GetDevicePixelWidth(aPlane),
mSurface->GetDevicePixelHeight(aPlane)),
// XXX: This isn't really correct (but isn't used), we should be using the
// format of the individual plane, not of the whole buffer.
mSurface->GetFormat());
}
bool
MacIOSurfaceTextureHostOGL::Lock()
{
if (!gl() || !gl()->MakeCurrent() || !mSurface) {
return false;
}
if (!mTextureSource) {
mTextureSource = CreateTextureSourceForPlane(0);
RefPtr<TextureSource> prev = mTextureSource;
for (size_t i = 1; i < mSurface->GetPlaneCount(); i++) {
RefPtr<TextureSource> next = CreateTextureSourceForPlane(i);
prev->SetNextSibling(next);
prev = next;
}
}
return true;
}
void
MacIOSurfaceTextureHostOGL::SetCompositor(Compositor* aCompositor)
{
CompositorOGL* glCompositor = AssertGLCompositor(aCompositor);
if (!glCompositor) {
mTextureSource = nullptr;
mCompositor = nullptr;
return;
}
if (mCompositor != glCompositor) {
// Cannot share GL texture identifiers across compositors.
mTextureSource = nullptr;
}
mCompositor = glCompositor;
}
gfx::SurfaceFormat
MacIOSurfaceTextureHostOGL::GetFormat() const {
if (!mSurface) {
return gfx::SurfaceFormat::UNKNOWN;
}
return mSurface->GetFormat();
}
gfx::SurfaceFormat
MacIOSurfaceTextureHostOGL::GetReadFormat() const {
if (!mSurface) {
return gfx::SurfaceFormat::UNKNOWN;
}
return mSurface->GetReadFormat();
}
gfx::IntSize
MacIOSurfaceTextureHostOGL::GetSize() const {
if (!mSurface) {
return gfx::IntSize();
}
return gfx::IntSize(mSurface->GetDevicePixelWidth(),
mSurface->GetDevicePixelHeight());
}
gl::GLContext*
MacIOSurfaceTextureHostOGL::gl() const
{
return mCompositor ? mCompositor->gl() : nullptr;
}
MacIOSurfaceTextureSourceOGL::MacIOSurfaceTextureSourceOGL(
CompositorOGL* aCompositor,
MacIOSurface* aSurface)
: mCompositor(aCompositor)
, mSurface(aSurface)
{
MOZ_ASSERT(aCompositor);
MOZ_COUNT_CTOR(MacIOSurfaceTextureSourceOGL);
}
MacIOSurfaceTextureSourceOGL::~MacIOSurfaceTextureSourceOGL()
{
MOZ_COUNT_DTOR(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::SamplingFilter aSamplingFilter)
{
gl::GLContext* gl = this->gl();
if (!gl || !gl->MakeCurrent()) {
NS_WARNING("Trying to bind a texture without a working 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());
ApplySamplingFilterToBoundTexture(gl, aSamplingFilter, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
}
void
MacIOSurfaceTextureSourceOGL::SetCompositor(Compositor* aCompositor)
{
mCompositor = AssertGLCompositor(aCompositor);
if (mCompositor && mNextSibling) {
mNextSibling->SetCompositor(aCompositor);
}
}
gl::GLContext*
MacIOSurfaceTextureSourceOGL::gl() const
{
return mCompositor ? mCompositor->gl() : nullptr;
}
} // namespace layers
} // namespace mozilla
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