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// Copyright 2019 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "XlibSurfaceKHR.hpp"
#include "Vulkan/VkDeviceMemory.hpp"
#include "Vulkan/VkImage.hpp"
namespace vk {
XlibSurfaceKHR::XlibSurfaceKHR(const VkXlibSurfaceCreateInfoKHR *pCreateInfo, void *mem)
: pDisplay(pCreateInfo->dpy)
, window(pCreateInfo->window)
{
int screen = DefaultScreen(pDisplay);
gc = libX11->XDefaultGC(pDisplay, screen);
XVisualInfo xVisual;
Status status = libX11->XMatchVisualInfo(pDisplay, screen, 32, TrueColor, &xVisual);
bool match = (status != 0 && xVisual.blue_mask == 0xFF);
visual = match ? xVisual.visual : libX11->XDefaultVisual(pDisplay, screen);
}
void XlibSurfaceKHR::destroySurface(const VkAllocationCallbacks *pAllocator)
{
}
size_t XlibSurfaceKHR::ComputeRequiredAllocationSize(const VkXlibSurfaceCreateInfoKHR *pCreateInfo)
{
return 0;
}
void XlibSurfaceKHR::getSurfaceCapabilities(VkSurfaceCapabilitiesKHR *pSurfaceCapabilities) const
{
SurfaceKHR::getSurfaceCapabilities(pSurfaceCapabilities);
XWindowAttributes attr;
libX11->XGetWindowAttributes(pDisplay, window, &attr);
VkExtent2D extent = { static_cast<uint32_t>(attr.width), static_cast<uint32_t>(attr.height) };
pSurfaceCapabilities->currentExtent = extent;
pSurfaceCapabilities->minImageExtent = extent;
pSurfaceCapabilities->maxImageExtent = extent;
}
void XlibSurfaceKHR::attachImage(PresentImage *image)
{
XWindowAttributes attr;
libX11->XGetWindowAttributes(pDisplay, window, &attr);
const VkExtent3D &extent = image->getImage()->getExtent();
int bytes_per_line = image->getImage()->rowPitchBytes(VK_IMAGE_ASPECT_COLOR_BIT, 0);
char *buffer = static_cast<char *>(image->getImageMemory()->getOffsetPointer(0));
XImage *xImage = libX11->XCreateImage(pDisplay, visual, attr.depth, ZPixmap, 0, buffer, extent.width, extent.height, 32, bytes_per_line);
imageMap[image] = xImage;
}
void XlibSurfaceKHR::detachImage(PresentImage *image)
{
auto it = imageMap.find(image);
if(it != imageMap.end())
{
XImage *xImage = it->second;
xImage->data = nullptr; // the XImage does not actually own the buffer
XDestroyImage(xImage);
imageMap.erase(it);
}
}
VkResult XlibSurfaceKHR::present(PresentImage *image)
{
auto it = imageMap.find(image);
if(it != imageMap.end())
{
XImage *xImage = it->second;
if(xImage->data)
{
XWindowAttributes attr;
libX11->XGetWindowAttributes(pDisplay, window, &attr);
VkExtent2D windowExtent = { static_cast<uint32_t>(attr.width), static_cast<uint32_t>(attr.height) };
const VkExtent3D &extent = image->getImage()->getExtent();
if(windowExtent.width != extent.width || windowExtent.height != extent.height)
{
return VK_ERROR_OUT_OF_DATE_KHR;
}
libX11->XPutImage(pDisplay, window, gc, xImage, 0, 0, 0, 0, extent.width, extent.height);
}
}
return VK_SUCCESS;
}
} // namespace vk