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main.c
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/*
* Copyright (c) 2012 Arvin Schnell <arvin.schnell@gmail.com>
* Copyright (c) 2012 Rob Clark <rob@ti.com>
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
/* Based on kmscube example written by Rob Clark, based on test app originally
* written by Arvin Schnell.
*
* Compile and run this with minigbm:
*
* https://chromium.googlesource.com/chromiumos/platform/minigbm
*
* Edit the minigbm Makefile to add -DGBM_I915 to CPPFLAGS, then compile and
* install with make DESTDIR=<some path>. Then pass --with-minigbm=<some path>
* to configure when configuring vkcube
*/
#define _DEFAULT_SOURCE /* for major() */
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/stat.h>
#include <signal.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include <linux/major.h>
#include <termios.h>
#include <poll.h>
#include <math.h>
#include <assert.h>
#include <sys/mman.h>
#include <linux/input.h>
#include "common.h"
enum display_mode {
DISPLAY_MODE_AUTO = 0,
DISPLAY_MODE_HEADLESS,
DISPLAY_MODE_KMS,
DISPLAY_MODE_WAYLAND,
DISPLAY_MODE_XCB,
DISPLAY_MODE_KHR,
};
static enum display_mode display_mode = DISPLAY_MODE_AUTO;
static const char *arg_out_file = "./cube.png";
void noreturn
failv(const char *format, va_list args)
{
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
exit(1);
}
void printflike(1,2) noreturn
fail(const char *format, ...)
{
va_list args;
va_start(args, format);
failv(format, args);
va_end(args);
}
void printflike(2, 3)
fail_if(int cond, const char *format, ...)
{
va_list args;
if (!cond)
return;
va_start(args, format);
failv(format, args);
va_end(args);
}
static char * __attribute__((returns_nonnull))
xstrdup(const char *s)
{
char *dup = strdup(s);
if (!dup) {
fprintf(stderr, "out of memory\n");
abort();
}
return dup;
}
static void
init_vk(struct vkcube *vc, const char *extension)
{
vkCreateInstance(&(VkInstanceCreateInfo) {
.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
.pApplicationInfo = &(VkApplicationInfo) {
.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
.pApplicationName = "vkcube",
.apiVersion = VK_MAKE_VERSION(1, 0, 2),
},
.enabledExtensionCount = extension ? 2 : 0,
.ppEnabledExtensionNames = (const char *[2]) {
VK_KHR_SURFACE_EXTENSION_NAME,
extension,
},
},
NULL,
&vc->instance);
uint32_t count;
VkResult res = vkEnumeratePhysicalDevices(vc->instance, &count, NULL);
fail_if(res != VK_SUCCESS || count == 0, "No Vulkan devices found.\n");
VkPhysicalDevice pd[count];
vkEnumeratePhysicalDevices(vc->instance, &count, pd);
vc->physical_device = pd[0];
printf("%d physical devices\n", count);
VkPhysicalDeviceProperties properties;
vkGetPhysicalDeviceProperties(vc->physical_device, &properties);
printf("vendor id %04x, device name %s\n",
properties.vendorID, properties.deviceName);
vkGetPhysicalDeviceMemoryProperties(vc->physical_device, &vc->memory_properties);
vkGetPhysicalDeviceQueueFamilyProperties(vc->physical_device, &count, NULL);
assert(count > 0);
VkQueueFamilyProperties props[count];
vkGetPhysicalDeviceQueueFamilyProperties(vc->physical_device, &count, props);
assert(props[0].queueFlags & VK_QUEUE_GRAPHICS_BIT);
vkCreateDevice(vc->physical_device,
&(VkDeviceCreateInfo) {
.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO,
.queueCreateInfoCount = 1,
.pQueueCreateInfos = &(VkDeviceQueueCreateInfo) {
.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO,
.queueFamilyIndex = 0,
.queueCount = 1,
.pQueuePriorities = (float []) { 1.0f },
},
.enabledExtensionCount = 1,
.ppEnabledExtensionNames = (const char * const []) {
VK_KHR_SWAPCHAIN_EXTENSION_NAME,
},
},
NULL,
&vc->device);
vkGetDeviceQueue(vc->device, 0, 0, &vc->queue);
}
static void
init_vk_objects(struct vkcube *vc)
{
vkCreateRenderPass(vc->device,
&(VkRenderPassCreateInfo) {
.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO,
.attachmentCount = 2,
.pAttachments = (VkAttachmentDescription[]) {
{ // attachment 0: resolved (non-MSAA) image
.format = vc->image_format,
.samples = 1,
.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE, // don't care about the previous contents
.storeOp = VK_ATTACHMENT_STORE_OP_STORE, // store it, this is the image that we want to display
.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
},
{ // attachment 1: MSAA image
.format = vc->image_format,
.samples = 4,
.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR, // clear MSAA image since that's what we're rendering to
.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE, // don't care about storing the MSAA image to memory
.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
}
},
.subpassCount = 1,
.pSubpasses = (VkSubpassDescription []) {
{
.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS,
.inputAttachmentCount = 0,
.colorAttachmentCount = 1,
.pColorAttachments = (VkAttachmentReference []) {
{
.attachment = 1, // rendering to MSAA image which is attachment 1
.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
}
},
.pResolveAttachments = (VkAttachmentReference []) {
{
// resolves the corresponding color attachment:
// pColorAttachments[i].attachment -> pResolveAttachments[i].attachment
// in this case: resolves attachment 1 into attachment 0
.attachment = 0,
.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
}
},
.pDepthStencilAttachment = NULL,
.preserveAttachmentCount = 0,
.pPreserveAttachments = NULL,
}
},
.dependencyCount = 0
},
NULL,
&vc->render_pass);
vc->model.init(vc);
vkCreateCommandPool(vc->device,
&(const VkCommandPoolCreateInfo) {
.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO,
.queueFamilyIndex = 0,
.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT
},
NULL,
&vc->cmd_pool);
vkCreateSemaphore(vc->device,
&(VkSemaphoreCreateInfo) {
.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO,
},
NULL,
&vc->semaphore);
}
static void
init_buffer(struct vkcube *vc, struct vkcube_buffer *b)
{
vkCreateImageView(vc->device,
&(VkImageViewCreateInfo) {
.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
.image = b->image,
.viewType = VK_IMAGE_VIEW_TYPE_2D,
.format = vc->image_format,
.components = {
.r = VK_COMPONENT_SWIZZLE_R,
.g = VK_COMPONENT_SWIZZLE_G,
.b = VK_COMPONENT_SWIZZLE_B,
.a = VK_COMPONENT_SWIZZLE_A,
},
.subresourceRange = {
.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
.baseMipLevel = 0,
.levelCount = 1,
.baseArrayLayer = 0,
.layerCount = 1,
},
},
NULL,
&b->view);
// create MSAA image
vkCreateImage(vc->device,
&(VkImageCreateInfo) {
.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
.imageType = VK_IMAGE_TYPE_2D,
.format = vc->image_format,
.extent = { .width = vc->width, .height = vc->height, .depth = 1 },
.mipLevels = 1,
.arrayLayers = 1,
.samples = 4,
.tiling = VK_IMAGE_TILING_OPTIMAL,
.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
.flags = 0,
},
NULL,
&b->image_msaa);
VkMemoryRequirements requirements;
vkGetImageMemoryRequirements(vc->device, b->image_msaa, &requirements);
vkAllocateMemory(vc->device,
&(VkMemoryAllocateInfo) {
.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
.allocationSize = requirements.size,
.memoryTypeIndex = 0
},
NULL,
&b->mem_msaa);
vkBindImageMemory(vc->device, b->image_msaa, b->mem_msaa, 0);
vkCreateImageView(vc->device,
&(VkImageViewCreateInfo) {
.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
.image = b->image_msaa,
.viewType = VK_IMAGE_VIEW_TYPE_2D,
.format = vc->image_format,
.components = {
.r = VK_COMPONENT_SWIZZLE_R,
.g = VK_COMPONENT_SWIZZLE_G,
.b = VK_COMPONENT_SWIZZLE_B,
.a = VK_COMPONENT_SWIZZLE_A,
},
.subresourceRange = {
.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
.baseMipLevel = 0,
.levelCount = 1,
.baseArrayLayer = 0,
.layerCount = 1,
},
},
NULL,
&b->view_msaa);
vkCreateFramebuffer(vc->device,
&(VkFramebufferCreateInfo) {
.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO,
.renderPass = vc->render_pass,
.attachmentCount = 2,
.pAttachments = (VkImageView[]) { b->view, b->view_msaa },
.width = vc->width,
.height = vc->height,
.layers = 1
},
NULL,
&b->framebuffer);
vkCreateFence(vc->device,
&(VkFenceCreateInfo) {
.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO,
.flags = VK_FENCE_CREATE_SIGNALED_BIT
},
NULL,
&b->fence);
vkAllocateCommandBuffers(vc->device,
&(VkCommandBufferAllocateInfo) {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
.commandPool = vc->cmd_pool,
.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY,
.commandBufferCount = 1,
},
&b->cmd_buffer);
}
/* Headless code - write one frame to png */
static void
convert_to_bytes(png_structp png, png_row_infop row_info, png_bytep data)
{
for (uint32_t i = 0; i < row_info->rowbytes; i += 4) {
uint8_t *b = &data[i];
uint32_t pixel;
memcpy (&pixel, b, sizeof (uint32_t));
b[0] = (pixel & 0xff0000) >> 16;
b[1] = (pixel & 0x00ff00) >> 8;
b[2] = (pixel & 0x0000ff) >> 0;
b[3] = 0xff;
}
}
static void
write_png(const char *path, int32_t width, int32_t height, int32_t stride, void *pixels)
{
FILE *f = NULL;
png_structp png_writer = NULL;
png_infop png_info = NULL;
uint8_t *rows[height];
for (int32_t y = 0; y < height; y++)
rows[y] = pixels + y * stride;
f = fopen(path, "wb");
fail_if(!f, "failed to open file for writing: %s", path);
png_writer = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL, NULL, NULL);
fail_if (!png_writer, "failed to create png writer");
png_info = png_create_info_struct(png_writer);
fail_if(!png_info, "failed to create png writer info");
png_init_io(png_writer, f);
png_set_IHDR(png_writer, png_info,
width, height,
8, PNG_COLOR_TYPE_RGBA,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_write_info(png_writer, png_info);
png_set_rows(png_writer, png_info, rows);
png_set_write_user_transform_fn(png_writer, convert_to_bytes);
png_write_png(png_writer, png_info, PNG_TRANSFORM_IDENTITY, NULL);
png_destroy_write_struct(&png_writer, &png_info);
fclose(f);
}
static void
write_buffer(struct vkcube *vc, struct vkcube_buffer *b)
{
const char *filename = arg_out_file;
uint32_t mem_size = b->stride * vc->height;
void *map;
vkMapMemory(vc->device, b->mem, 0, mem_size, 0, &map);
fprintf(stderr, "writing first frame to %s\n", filename);
write_png(filename, vc->width, vc->height, b->stride, map);
}
// Return -1 on failure.
static int
init_headless(struct vkcube *vc)
{
init_vk(vc, NULL);
vc->image_format = VK_FORMAT_B8G8R8A8_SRGB;
init_vk_objects(vc);
struct vkcube_buffer *b = &vc->buffers[0];
vkCreateImage(vc->device,
&(VkImageCreateInfo) {
.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
.imageType = VK_IMAGE_TYPE_2D,
.format = vc->image_format,
.extent = { .width = vc->width, .height = vc->height, .depth = 1 },
.mipLevels = 1,
.arrayLayers = 1,
.samples = 1,
.tiling = VK_IMAGE_TILING_LINEAR,
.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
.flags = 0,
},
NULL,
&b->image);
VkMemoryRequirements requirements;
vkGetImageMemoryRequirements(vc->device, b->image, &requirements);
vkAllocateMemory(vc->device,
&(VkMemoryAllocateInfo) {
.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
.allocationSize = requirements.size,
.memoryTypeIndex = 0
},
NULL,
&b->mem);
vkBindImageMemory(vc->device, b->image, b->mem, 0);
b->stride = vc->width * 4;
init_buffer(vc, &vc->buffers[0]);
return 0;
}
#ifdef HAVE_VULKAN_INTEL_H
/* KMS display code - render to kernel modesetting fb */
#include <vulkan/vulkan_intel.h>
static struct termios save_tio;
static void
restore_vt(void)
{
struct vt_mode mode = { .mode = VT_AUTO };
ioctl(STDIN_FILENO, VT_SETMODE, &mode);
tcsetattr(STDIN_FILENO, TCSANOW, &save_tio);
ioctl(STDIN_FILENO, KDSETMODE, KD_TEXT);
}
static void
handle_signal(int sig)
{
restore_vt();
}
static int
init_vt(struct vkcube *vc)
{
struct termios tio;
struct stat buf;
int ret;
/* First, save term io setting so we can restore properly. */
tcgetattr(STDIN_FILENO, &save_tio);
/* Make sure we're on a vt. */
ret = fstat(STDIN_FILENO, &buf);
fail_if(ret == -1, "failed to stat stdin\n");
if (major(buf.st_rdev) != TTY_MAJOR) {
fprintf(stderr, "stdin not a vt, running in no-display mode\n");
return -1;
}
atexit(restore_vt);
/* Set console input to raw mode. */
tio = save_tio;
tio.c_lflag &= ~(ICANON | ECHO);
tcsetattr(STDIN_FILENO, TCSANOW, &tio);
/* Restore console on SIGINT and friends. */
struct sigaction act = {
.sa_handler = handle_signal,
.sa_flags = SA_RESETHAND
};
sigaction(SIGINT, &act, NULL);
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGABRT, &act, NULL);
/* We don't drop drm master, so block VT switching while we're
* running. Otherwise, switching to X on another VT will crash X when it
* fails to get drm master. */
struct vt_mode mode = { .mode = VT_PROCESS, .relsig = 0, .acqsig = 0 };
ret = ioctl(STDIN_FILENO, VT_SETMODE, &mode);
fail_if(ret == -1, "failed to take control of vt handling\n");
/* Set KD_GRAPHICS to disable fbcon while we render. */
ret = ioctl(STDIN_FILENO, KDSETMODE, KD_GRAPHICS);
fail_if(ret == -1, "failed to switch console to graphics mode\n");
return 0;
}
// Return -1 on failure.
static int
init_kms(struct vkcube *vc)
{
drmModeRes *resources;
drmModeConnector *connector;
drmModeEncoder *encoder;
int i;
if (init_vt(vc) == -1)
return -1;
vc->fd = open("/dev/dri/card0", O_RDWR);
fail_if(vc->fd == -1, "failed to open /dev/dri/card0\n");
/* Get KMS resources and find the first active connecter. We'll use that
connector and the crtc driving it in the mode it's currently running. */
resources = drmModeGetResources(vc->fd);
fail_if(!resources, "drmModeGetResources failed: %s\n", strerror(errno));
for (i = 0; i < resources->count_connectors; i++) {
connector = drmModeGetConnector(vc->fd, resources->connectors[i]);
if (connector->connection == DRM_MODE_CONNECTED)
break;
drmModeFreeConnector(connector);
connector = NULL;
}
fail_if(!connector, "no connected connector!\n");
encoder = drmModeGetEncoder(vc->fd, connector->encoder_id);
fail_if(!encoder, "failed to get encoder\n");
vc->crtc = drmModeGetCrtc(vc->fd, encoder->crtc_id);
fail_if(!vc->crtc, "failed to get crtc\n");
printf("mode info: hdisplay %d, vdisplay %d\n",
vc->crtc->mode.hdisplay, vc->crtc->mode.vdisplay);
vc->connector = connector;
vc->width = vc->crtc->mode.hdisplay;
vc->height = vc->crtc->mode.vdisplay;
vc->gbm_device = gbm_create_device(vc->fd);
init_vk(vc, NULL);
vc->image_format = VK_FORMAT_R8G8B8A8_SRGB;
init_vk_objects(vc);
PFN_vkCreateDmaBufImageINTEL create_dma_buf_image =
(PFN_vkCreateDmaBufImageINTEL)vkGetDeviceProcAddr(vc->device, "vkCreateDmaBufImageINTEL");
for (uint32_t i = 0; i < 2; i++) {
struct vkcube_buffer *b = &vc->buffers[i];
int fd, stride, ret;
b->gbm_bo = gbm_bo_create(vc->gbm_device, vc->width, vc->height,
GBM_FORMAT_XRGB8888, GBM_BO_USE_SCANOUT);
fd = gbm_bo_get_fd(b->gbm_bo);
stride = gbm_bo_get_stride(b->gbm_bo);
create_dma_buf_image(vc->device,
&(VkDmaBufImageCreateInfo) {
.sType = VK_STRUCTURE_TYPE_DMA_BUF_IMAGE_CREATE_INFO_INTEL,
.fd = fd,
.format = vc->image_format,
.extent = { vc->width, vc->height, 1 },
.strideInBytes = stride
},
NULL,
&b->mem,
&b->image);
close(fd);
b->stride = gbm_bo_get_stride(b->gbm_bo);
uint32_t bo_handles[4] = { gbm_bo_get_handle(b->gbm_bo).s32, };
uint32_t pitches[4] = { stride, };
uint32_t offsets[4] = { 0, };
ret = drmModeAddFB2(vc->fd, vc->width, vc->height,
DRM_FORMAT_XRGB8888, bo_handles,
pitches, offsets, &b->fb, 0);
fail_if(ret == -1, "addfb2 failed\n");
init_buffer(vc, b);
}
return 0;
}
static void
page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec, void *data)
{
}
static void
mainloop_vt(struct vkcube *vc)
{
int len, ret;
char buf[16];
struct pollfd pfd[2];
struct vkcube_buffer *b;
pfd[0].fd = STDIN_FILENO;
pfd[0].events = POLLIN;
pfd[1].fd = vc->fd;
pfd[1].events = POLLIN;
drmEventContext evctx = {
.version = 2,
.page_flip_handler = page_flip_handler,
};
ret = drmModeSetCrtc(vc->fd, vc->crtc->crtc_id, vc->buffers[0].fb,
0, 0, &vc->connector->connector_id, 1, &vc->crtc->mode);
fail_if(ret < 0, "modeset failed: %m\n");
ret = drmModePageFlip(vc->fd, vc->crtc->crtc_id, vc->buffers[0].fb,
DRM_MODE_PAGE_FLIP_EVENT, NULL);
fail_if(ret < 0, "pageflip failed: %m\n");
while (1) {
ret = poll(pfd, 2, -1);
fail_if(ret == -1, "poll failed\n");
if (pfd[0].revents & POLLIN) {
len = read(STDIN_FILENO, buf, sizeof(buf));
switch (buf[0]) {
case 'q':
return;
case '\e':
if (len == 1)
return;
}
}
if (pfd[1].revents & POLLIN) {
drmHandleEvent(vc->fd, &evctx);
b = &vc->buffers[vc->current & 1];
vc->model.render(vc, b, false);
ret = drmModePageFlip(vc->fd, vc->crtc->crtc_id, b->fb,
DRM_MODE_PAGE_FLIP_EVENT, NULL);
fail_if(ret < 0, "pageflip failed: %m\n");
vc->current++;
}
}
}
#else
static int
init_kms(struct vkcube *vc)
{
return -1;
}
static void
mainloop_vt(struct vkcube *vc)
{
}
#endif
/* Swapchain-based code - shared between XCB and Wayland */
static VkFormat
choose_surface_format(struct vkcube *vc)
{
uint32_t num_formats = 0;
vkGetPhysicalDeviceSurfaceFormatsKHR(vc->physical_device, vc->surface,
&num_formats, NULL);
assert(num_formats > 0);
VkSurfaceFormatKHR formats[num_formats];
vkGetPhysicalDeviceSurfaceFormatsKHR(vc->physical_device, vc->surface,
&num_formats, formats);
VkFormat format = VK_FORMAT_UNDEFINED;
for (int i = 0; i < num_formats; i++) {
switch (formats[i].format) {
case VK_FORMAT_R8G8B8A8_SRGB:
case VK_FORMAT_B8G8R8A8_SRGB:
/* These formats are all fine */
format = formats[i].format;
break;
case VK_FORMAT_R8G8B8_SRGB:
case VK_FORMAT_B8G8R8_SRGB:
case VK_FORMAT_R5G6B5_UNORM_PACK16:
case VK_FORMAT_B5G6R5_UNORM_PACK16:
/* We would like to support these but they don't seem to work. */
default:
continue;
}
}
assert(format != VK_FORMAT_UNDEFINED);
return format;
}
static void
create_swapchain(struct vkcube *vc)
{
VkSurfaceCapabilitiesKHR surface_caps;
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(vc->physical_device, vc->surface,
&surface_caps);
assert(surface_caps.supportedCompositeAlpha &
VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR);
VkBool32 supported;
vkGetPhysicalDeviceSurfaceSupportKHR(vc->physical_device, 0, vc->surface,
&supported);
assert(supported);
uint32_t count;
vkGetPhysicalDeviceSurfacePresentModesKHR(vc->physical_device, vc->surface,
&count, NULL);
VkPresentModeKHR present_modes[count];
vkGetPhysicalDeviceSurfacePresentModesKHR(vc->physical_device, vc->surface,
&count, present_modes);
int i;
VkPresentModeKHR present_mode = VK_PRESENT_MODE_MAILBOX_KHR;
for (i = 0; i < count; i++) {
if (present_modes[i] == VK_PRESENT_MODE_FIFO_KHR) {
present_mode = VK_PRESENT_MODE_FIFO_KHR;
break;
}
}
uint32_t minImageCount = 2;
if (minImageCount < surface_caps.minImageCount) {
if (surface_caps.minImageCount > MAX_NUM_IMAGES)
fail("surface_caps.minImageCount is too large (is: %d, max: %d)",
surface_caps.minImageCount, MAX_NUM_IMAGES);
minImageCount = surface_caps.minImageCount;
}
if (surface_caps.maxImageCount > 0 &&
minImageCount > surface_caps.maxImageCount) {
minImageCount = surface_caps.maxImageCount;
}
vkCreateSwapchainKHR(vc->device,
&(VkSwapchainCreateInfoKHR) {
.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
.surface = vc->surface,
.minImageCount = minImageCount,
.imageFormat = vc->image_format,
.imageColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR,
.imageExtent = { vc->width, vc->height },
.imageArrayLayers = 1,
.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE,
.queueFamilyIndexCount = 1,
.pQueueFamilyIndices = (uint32_t[]) { 0 },
.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR,
.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
.presentMode = present_mode,
}, NULL, &vc->swap_chain);
vkGetSwapchainImagesKHR(vc->device, vc->swap_chain,
&vc->image_count, NULL);
assert(vc->image_count > 0);
VkImage swap_chain_images[vc->image_count];
vkGetSwapchainImagesKHR(vc->device, vc->swap_chain,
&vc->image_count, swap_chain_images);
assert(vc->image_count <= MAX_NUM_IMAGES);
for (uint32_t i = 0; i < vc->image_count; i++) {
vc->buffers[i].image = swap_chain_images[i];
init_buffer(vc, &vc->buffers[i]);
}
}
/* XCB display code - render to X window */
static xcb_atom_t
get_atom(struct xcb_connection_t *conn, const char *name)
{
xcb_intern_atom_cookie_t cookie;
xcb_intern_atom_reply_t *reply;
xcb_atom_t atom;
cookie = xcb_intern_atom(conn, 0, strlen(name), name);
reply = xcb_intern_atom_reply(conn, cookie, NULL);
if (reply)
atom = reply->atom;
else
atom = XCB_NONE;
free(reply);
return atom;
}
// Return -1 on failure.
static int
init_xcb(struct vkcube *vc)
{
xcb_screen_iterator_t iter;
static const char title[] = "Vulkan Cube";
vc->xcb.conn = xcb_connect(0, 0);
if (xcb_connection_has_error(vc->xcb.conn))
return -1;
vc->xcb.window = xcb_generate_id(vc->xcb.conn);
uint32_t window_values[] = {
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY |
XCB_EVENT_MASK_KEY_PRESS
};
iter = xcb_setup_roots_iterator(xcb_get_setup(vc->xcb.conn));
xcb_create_window(vc->xcb.conn,
XCB_COPY_FROM_PARENT,
vc->xcb.window,
iter.data->root,
0, 0,
vc->width,
vc->height,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
iter.data->root_visual,
XCB_CW_EVENT_MASK, window_values);
vc->xcb.atom_wm_protocols = get_atom(vc->xcb.conn, "WM_PROTOCOLS");
vc->xcb.atom_wm_delete_window = get_atom(vc->xcb.conn, "WM_DELETE_WINDOW");
xcb_change_property(vc->xcb.conn,
XCB_PROP_MODE_REPLACE,
vc->xcb.window,
vc->xcb.atom_wm_protocols,
XCB_ATOM_ATOM,
32,
1, &vc->xcb.atom_wm_delete_window);
xcb_change_property(vc->xcb.conn,
XCB_PROP_MODE_REPLACE,
vc->xcb.window,
get_atom(vc->xcb.conn, "_NET_WM_NAME"),
get_atom(vc->xcb.conn, "UTF8_STRING"),
8, // sizeof(char),
strlen(title), title);
xcb_map_window(vc->xcb.conn, vc->xcb.window);
xcb_flush(vc->xcb.conn);
init_vk(vc, VK_KHR_XCB_SURFACE_EXTENSION_NAME);
PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR get_xcb_presentation_support =
(PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)
vkGetInstanceProcAddr(vc->instance, "vkGetPhysicalDeviceXcbPresentationSupportKHR");
PFN_vkCreateXcbSurfaceKHR create_xcb_surface =
(PFN_vkCreateXcbSurfaceKHR)
vkGetInstanceProcAddr(vc->instance, "vkCreateXcbSurfaceKHR");
if (!get_xcb_presentation_support(vc->physical_device, 0,
vc->xcb.conn,
iter.data->root_visual)) {
fail("Vulkan not supported on given X window");
}
create_xcb_surface(vc->instance,
&(VkXcbSurfaceCreateInfoKHR) {
.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR,
.connection = vc->xcb.conn,
.window = vc->xcb.window,
}, NULL, &vc->surface);
vc->image_format = choose_surface_format(vc);
init_vk_objects(vc);
vc->image_count = 0;
return 0;
}
static void
schedule_xcb_repaint(struct vkcube *vc)
{
xcb_client_message_event_t client_message;
client_message.response_type = XCB_CLIENT_MESSAGE;
client_message.format = 32;
client_message.window = vc->xcb.window;
client_message.type = XCB_ATOM_NOTICE;
xcb_send_event(vc->xcb.conn, 0, vc->xcb.window,
0, (char *) &client_message);
xcb_flush(vc->xcb.conn);
}
static void
mainloop_xcb(struct vkcube *vc)
{
xcb_generic_event_t *event;
xcb_key_press_event_t *key_press;
xcb_client_message_event_t *client_message;
xcb_configure_notify_event_t *configure;
while (1) {
bool repaint = false;
event = xcb_wait_for_event(vc->xcb.conn);
while (event) {
switch (event->response_type & 0x7f) {
case XCB_CLIENT_MESSAGE:
client_message = (xcb_client_message_event_t *) event;
if (client_message->window != vc->xcb.window)
break;
if (client_message->type == vc->xcb.atom_wm_protocols &&
client_message->data.data32[0] == vc->xcb.atom_wm_delete_window) {
exit(0);
}
if (client_message->type == XCB_ATOM_NOTICE)
repaint = true;
break;
case XCB_CONFIGURE_NOTIFY:
configure = (xcb_configure_notify_event_t *) event;
if (vc->width != configure->width ||
vc->height != configure->height) {
if (vc->image_count > 0) {
vkDestroySwapchainKHR(vc->device, vc->swap_chain, NULL);
vc->image_count = 0;
}
vc->width = configure->width;
vc->height = configure->height;
}
break;
case XCB_EXPOSE:
schedule_xcb_repaint(vc);
break;
case XCB_KEY_PRESS:
key_press = (xcb_key_press_event_t *) event;
if (key_press->detail == 9)
exit(0);
break;
}
free(event);
event = xcb_poll_for_event(vc->xcb.conn);