gecko-dev/gfx/layers/opengl/MacIOSurfaceTextureHostOGL.cpp
Jeff Muizelaar 3402e21567 Bug 1125709. Avoiding using MacIOSurfaceTextureSourceOGL in MacIOSurfaceTextureHostOGL. r=nical
Using GLTextureSource gives us better performance because we don't need to call
CGLTexImageIOSurface2D everytime we draw.

This will eventually let us drop MacIOSurfaceTextureSourceOGL once WebGL on OS
X is using MacIOSurfaceTextureHostOGL.

--HG--
extra : rebase_source : 95a9b0888d7ddfeae520141e7f932f8555fa58d5
2015-01-19 21:23:42 -05:00

128 lines
4.0 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 "GLContextCGL.h"
namespace mozilla {
namespace layers {
MacIOSurfaceTextureHostOGL::MacIOSurfaceTextureHostOGL(TextureFlags aFlags,
const SurfaceDescriptorMacIOSurface& aDescriptor)
: TextureHost(aFlags)
{
mSurface = MacIOSurface::LookupSurface(aDescriptor.surface(),
aDescriptor.scaleFactor(),
!aDescriptor.isOpaque());
}
bool
MacIOSurfaceTextureHostOGL::Lock()
{
if (!mCompositor || !mSurface) {
return false;
}
if (!mTextureSource) {
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());
mTextureSource = new GLTextureSource(mCompositor, textureHandle, LOCAL_GL_TEXTURE_RECTANGLE_ARB,
gfx::IntSize(mSurface->GetDevicePixelWidth(),
mSurface->GetDevicePixelHeight()),
mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8:
gfx::SurfaceFormat::R8G8B8X8);
}
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;
}
}
}