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