1// Copyright 2019 The SwiftShader Authors. All Rights Reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15#include "XlibSurfaceKHR.hpp"
16
17#include "Vulkan/VkDeviceMemory.hpp"
18#include "Vulkan/VkImage.hpp"
19
20namespace vk {
21
22XlibSurfaceKHR::XlibSurfaceKHR(const VkXlibSurfaceCreateInfoKHR *pCreateInfo, void *mem) :
23 pDisplay(pCreateInfo->dpy),
24 window(pCreateInfo->window)
25{
26 int screen = DefaultScreen(pDisplay);
27 gc = libX11->XDefaultGC(pDisplay, screen);
28
29 XVisualInfo xVisual;
30 Status status = libX11->XMatchVisualInfo(pDisplay, screen, 32, TrueColor, &xVisual);
31 bool match = (status != 0 && xVisual.blue_mask ==0xFF);
32 visual = match ? xVisual.visual : libX11->XDefaultVisual(pDisplay, screen);
33}
34
35void XlibSurfaceKHR::destroySurface(const VkAllocationCallbacks *pAllocator)
36{
37
38}
39
40size_t XlibSurfaceKHR::ComputeRequiredAllocationSize(const VkXlibSurfaceCreateInfoKHR *pCreateInfo)
41{
42 return 0;
43}
44
45void XlibSurfaceKHR::getSurfaceCapabilities(VkSurfaceCapabilitiesKHR *pSurfaceCapabilities) const
46{
47 SurfaceKHR::getSurfaceCapabilities(pSurfaceCapabilities);
48
49 XWindowAttributes attr;
50 libX11->XGetWindowAttributes(pDisplay, window, &attr);
51 VkExtent2D extent = {static_cast<uint32_t>(attr.width), static_cast<uint32_t>(attr.height)};
52
53 pSurfaceCapabilities->currentExtent = extent;
54 pSurfaceCapabilities->minImageExtent = extent;
55 pSurfaceCapabilities->maxImageExtent = extent;
56}
57
58void XlibSurfaceKHR::attachImage(PresentImage* image)
59{
60 XWindowAttributes attr;
61 libX11->XGetWindowAttributes(pDisplay, window, &attr);
62
63 VkExtent3D extent = image->getImage()->getMipLevelExtent(VK_IMAGE_ASPECT_COLOR_BIT, 0);
64
65 int bytes_per_line = image->getImage()->rowPitchBytes(VK_IMAGE_ASPECT_COLOR_BIT, 0);
66 char* buffer = static_cast<char*>(image->getImageMemory()->getOffsetPointer(0));
67
68 XImage* xImage = libX11->XCreateImage(pDisplay, visual, attr.depth, ZPixmap, 0, buffer, extent.width, extent.height, 32, bytes_per_line);
69
70 imageMap[image] = xImage;
71}
72
73void XlibSurfaceKHR::detachImage(PresentImage* image)
74{
75 auto it = imageMap.find(image);
76 if(it != imageMap.end())
77 {
78 XImage* xImage = it->second;
79 xImage->data = nullptr; // the XImage does not actually own the buffer
80 XDestroyImage(xImage);
81 imageMap.erase(image);
82 }
83}
84
85VkResult XlibSurfaceKHR::present(PresentImage* image)
86{
87 auto it = imageMap.find(image);
88 if(it != imageMap.end())
89 {
90 XImage* xImage = it->second;
91
92 if(xImage->data)
93 {
94 VkExtent3D extent = image->getImage()->getMipLevelExtent(VK_IMAGE_ASPECT_COLOR_BIT, 0);
95 libX11->XPutImage(pDisplay, window, gc, xImage, 0, 0, 0, 0, extent.width, extent.height);
96 }
97 }
98
99 return VK_SUCCESS;
100}
101
102}