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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/gl_surface_osmesa_x11.h"
#include <stdint.h>
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/trace_event/trace_event.h"
#include "ui/gfx/x/x11_types.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_implementation.h"
namespace gl {
GLSurfaceOSMesaX11::GLSurfaceOSMesaX11(gfx::AcceleratedWidget window)
: GLSurfaceOSMesa(
GLSurfaceFormat(GLSurfaceFormat::PIXEL_LAYOUT_BGRA),
gfx::Size(1, 1)),
xdisplay_(gfx::GetXDisplay()),
window_graphics_context_(0),
window_(window),
pixmap_graphics_context_(0),
pixmap_(0) {
DCHECK(xdisplay_);
DCHECK(window_);
}
// static
bool GLSurfaceOSMesaX11::InitializeOneOff() {
static bool initialized = false;
if (initialized)
return true;
if (!gfx::GetXDisplay()) {
LOG(ERROR) << "XOpenDisplay failed.";
return false;
}
initialized = true;
return true;
}
bool GLSurfaceOSMesaX11::Initialize(GLSurfaceFormat format) {
if (!GLSurfaceOSMesa::Initialize(format))
return false;
window_graphics_context_ = XCreateGC(xdisplay_, window_, 0, NULL);
if (!window_graphics_context_) {
LOG(ERROR) << "XCreateGC failed.";
Destroy();
return false;
}
return true;
}
void GLSurfaceOSMesaX11::Destroy() {
if (pixmap_graphics_context_) {
XFreeGC(xdisplay_, pixmap_graphics_context_);
pixmap_graphics_context_ = NULL;
}
if (pixmap_) {
XFreePixmap(xdisplay_, pixmap_);
pixmap_ = 0;
}
if (window_graphics_context_) {
XFreeGC(xdisplay_, window_graphics_context_);
window_graphics_context_ = NULL;
}
XSync(xdisplay_, False);
}
bool GLSurfaceOSMesaX11::Resize(const gfx::Size& new_size,
float scale_factor,
bool alpha) {
if (!GLSurfaceOSMesa::Resize(new_size, scale_factor, alpha))
return false;
XWindowAttributes attributes;
if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
return false;
}
// Destroy the previous pixmap and graphics context.
if (pixmap_graphics_context_) {
XFreeGC(xdisplay_, pixmap_graphics_context_);
pixmap_graphics_context_ = NULL;
}
if (pixmap_) {
XFreePixmap(xdisplay_, pixmap_);
pixmap_ = 0;
}
// Recreate a pixmap to hold the frame.
pixmap_ = XCreatePixmap(xdisplay_, window_, new_size.width(),
new_size.height(), attributes.depth);
if (!pixmap_) {
LOG(ERROR) << "XCreatePixmap failed.";
return false;
}
// Recreate a graphics context for the pixmap.
pixmap_graphics_context_ = XCreateGC(xdisplay_, pixmap_, 0, NULL);
if (!pixmap_graphics_context_) {
LOG(ERROR) << "XCreateGC failed";
return false;
}
return true;
}
bool GLSurfaceOSMesaX11::IsOffscreen() {
return false;
}
gfx::SwapResult GLSurfaceOSMesaX11::SwapBuffers() {
TRACE_EVENT2("gpu", "GLSurfaceOSMesaX11:RealSwapBuffers", "width",
GetSize().width(), "height", GetSize().height());
gfx::Size size = GetSize();
XWindowAttributes attributes;
if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
return gfx::SwapResult::SWAP_FAILED;
}
// Copy the frame into the pixmap.
gfx::PutARGBImage(xdisplay_, attributes.visual, attributes.depth, pixmap_,
pixmap_graphics_context_,
static_cast<const uint8_t*>(GetHandle()), size.width(),
size.height());
// Copy the pixmap to the window.
XCopyArea(xdisplay_, pixmap_, window_, window_graphics_context_, 0, 0,
size.width(), size.height(), 0, 0);
return gfx::SwapResult::SWAP_ACK;
}
bool GLSurfaceOSMesaX11::SupportsPostSubBuffer() {
return true;
}
gfx::SwapResult GLSurfaceOSMesaX11::PostSubBuffer(int x,
int y,
int width,
int height) {
gfx::Size size = GetSize();
// Move (0,0) from lower-left to upper-left
y = size.height() - y - height;
XWindowAttributes attributes;
if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
return gfx::SwapResult::SWAP_FAILED;
}
// Copy the frame into the pixmap.
gfx::PutARGBImage(xdisplay_, attributes.visual, attributes.depth, pixmap_,
pixmap_graphics_context_,
static_cast<const uint8_t*>(GetHandle()), size.width(),
size.height(), x, y, x, y, width, height);
// Copy the pixmap to the window.
XCopyArea(xdisplay_, pixmap_, window_, window_graphics_context_, x, y, width,
height, x, y);
return gfx::SwapResult::SWAP_ACK;
}
GLSurfaceOSMesaX11::~GLSurfaceOSMesaX11() {
Destroy();
}
} // namespace gl
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