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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/ozone/platform/x11/gl_surface_egl_readback_x11.h"
#include "base/logging.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "third_party/skia/include/core/SkPixmap.h"
#include "ui/base/x/x11_util.h"
#include "ui/gfx/x/xproto.h"
namespace ui {
namespace {
constexpr x11::GraphicsContext kNoGC = x11::GraphicsContext{};
}
GLSurfaceEglReadbackX11::GLSurfaceEglReadbackX11(gl::GLDisplayEGL* display,
gfx::AcceleratedWidget window)
: GLSurfaceEglReadback(display),
window_(static_cast<x11::Window>(window)),
connection_(x11::Connection::Get()) {}
bool GLSurfaceEglReadbackX11::Initialize(gl::GLSurfaceFormat format) {
if (!GLSurfaceEglReadback::Initialize(format))
return false;
// We don't need to reinitialize |window_graphics_context_|.
if (window_graphics_context_ != kNoGC)
return true;
window_graphics_context_ = connection_->GenerateId<x11::GraphicsContext>();
auto gc_future = connection_->CreateGC({window_graphics_context_, window_});
if (auto attributes = connection_->GetWindowAttributes({window_}).Sync()) {
visual_ = attributes->visual;
} else {
DLOG(ERROR) << "Failed to get attributes for window "
<< static_cast<uint32_t>(window_);
Destroy();
return false;
}
if (gc_future.Sync().error) {
DLOG(ERROR) << "XCreateGC failed";
Destroy();
return false;
}
return true;
}
void GLSurfaceEglReadbackX11::Destroy() {
if (window_graphics_context_ != kNoGC) {
connection_->FreeGC({window_graphics_context_});
window_graphics_context_ = kNoGC;
}
connection_->Sync();
GLSurfaceEglReadback::Destroy();
}
GLSurfaceEglReadbackX11::~GLSurfaceEglReadbackX11() {
Destroy();
}
bool GLSurfaceEglReadbackX11::HandlePixels(uint8_t* pixels) {
SkImageInfo image_info =
SkImageInfo::Make(GetSize().width(), GetSize().height(),
kBGRA_8888_SkColorType, kPremul_SkAlphaType);
SkPixmap pixmap(image_info, pixels, image_info.minRowBytes());
// Copy pixels into pixmap and then update the XWindow.
const gfx::Size size = GetSize();
DrawPixmap(connection_, visual_, window_, window_graphics_context_, pixmap, 0,
0, 0, 0, size.width(), size.height());
return true;
}
} // namespace ui
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