diff options
Diffstat (limited to 'src/vulkan/wsi/wsi_common_x11.c')
| -rw-r--r-- | src/vulkan/wsi/wsi_common_x11.c | 887 |
1 files changed, 887 insertions, 0 deletions
diff --git a/src/vulkan/wsi/wsi_common_x11.c b/src/vulkan/wsi/wsi_common_x11.c new file mode 100644 index 00000000000..b5832c685e6 --- /dev/null +++ b/src/vulkan/wsi/wsi_common_x11.c @@ -0,0 +1,887 @@ +/* + * 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. + */ + +#include <X11/Xlib-xcb.h> +#include <X11/xshmfence.h> +#include <xcb/xcb.h> +#include <xcb/dri3.h> +#include <xcb/present.h> + +#include "util/macros.h" +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> + +#include "util/hash_table.h" + +#include "wsi_common.h" +#include "wsi_common_x11.h" + +#define typed_memcpy(dest, src, count) ({ \ + static_assert(sizeof(*src) == sizeof(*dest), ""); \ + memcpy((dest), (src), (count) * sizeof(*(src))); \ +}) + +struct wsi_x11_connection { + bool has_dri3; + bool has_present; +}; + +struct wsi_x11 { + struct wsi_interface base; + + pthread_mutex_t mutex; + /* Hash table of xcb_connection -> wsi_x11_connection mappings */ + struct hash_table *connections; +}; + +static struct wsi_x11_connection * +wsi_x11_connection_create(const VkAllocationCallbacks *alloc, + xcb_connection_t *conn) +{ + xcb_query_extension_cookie_t dri3_cookie, pres_cookie; + xcb_query_extension_reply_t *dri3_reply, *pres_reply; + + struct wsi_x11_connection *wsi_conn = + vk_alloc(alloc, sizeof(*wsi_conn), 8, + VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE); + if (!wsi_conn) + return NULL; + + dri3_cookie = xcb_query_extension(conn, 4, "DRI3"); + pres_cookie = xcb_query_extension(conn, 7, "PRESENT"); + + dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL); + pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL); + if (dri3_reply == NULL || pres_reply == NULL) { + free(dri3_reply); + free(pres_reply); + vk_free(alloc, wsi_conn); + return NULL; + } + + wsi_conn->has_dri3 = dri3_reply->present != 0; + wsi_conn->has_present = pres_reply->present != 0; + + free(dri3_reply); + free(pres_reply); + + return wsi_conn; +} + +static void +wsi_x11_connection_destroy(const VkAllocationCallbacks *alloc, + struct wsi_x11_connection *conn) +{ + vk_free(alloc, conn); +} + +static struct wsi_x11_connection * +wsi_x11_get_connection(struct wsi_device *wsi_dev, + const VkAllocationCallbacks *alloc, + xcb_connection_t *conn) +{ + struct wsi_x11 *wsi = + (struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB]; + + pthread_mutex_lock(&wsi->mutex); + + struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn); + if (!entry) { + /* We're about to make a bunch of blocking calls. Let's drop the + * mutex for now so we don't block up too badly. + */ + pthread_mutex_unlock(&wsi->mutex); + + struct wsi_x11_connection *wsi_conn = + wsi_x11_connection_create(alloc, conn); + + pthread_mutex_lock(&wsi->mutex); + + entry = _mesa_hash_table_search(wsi->connections, conn); + if (entry) { + /* Oops, someone raced us to it */ + wsi_x11_connection_destroy(alloc, wsi_conn); + } else { + entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn); + } + } + + pthread_mutex_unlock(&wsi->mutex); + + return entry->data; +} + +static const VkSurfaceFormatKHR formats[] = { + { .format = VK_FORMAT_B8G8R8A8_SRGB, }, + { .format = VK_FORMAT_B8G8R8A8_UNORM, }, +}; + +static const VkPresentModeKHR present_modes[] = { + VK_PRESENT_MODE_MAILBOX_KHR, +}; + +static xcb_screen_t * +get_screen_for_root(xcb_connection_t *conn, xcb_window_t root) +{ + xcb_screen_iterator_t screen_iter = + xcb_setup_roots_iterator(xcb_get_setup(conn)); + + for (; screen_iter.rem; xcb_screen_next (&screen_iter)) { + if (screen_iter.data->root == root) + return screen_iter.data; + } + + return NULL; +} + +static xcb_visualtype_t * +screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id, + unsigned *depth) +{ + xcb_depth_iterator_t depth_iter = + xcb_screen_allowed_depths_iterator(screen); + + for (; depth_iter.rem; xcb_depth_next (&depth_iter)) { + xcb_visualtype_iterator_t visual_iter = + xcb_depth_visuals_iterator (depth_iter.data); + + for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) { + if (visual_iter.data->visual_id == visual_id) { + if (depth) + *depth = depth_iter.data->depth; + return visual_iter.data; + } + } + } + + return NULL; +} + +static xcb_visualtype_t * +connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id, + unsigned *depth) +{ + xcb_screen_iterator_t screen_iter = + xcb_setup_roots_iterator(xcb_get_setup(conn)); + + /* For this we have to iterate over all of the screens which is rather + * annoying. Fortunately, there is probably only 1. + */ + for (; screen_iter.rem; xcb_screen_next (&screen_iter)) { + xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data, + visual_id, depth); + if (visual) + return visual; + } + + return NULL; +} + +static xcb_visualtype_t * +get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window, + unsigned *depth) +{ + xcb_query_tree_cookie_t tree_cookie; + xcb_get_window_attributes_cookie_t attrib_cookie; + xcb_query_tree_reply_t *tree; + xcb_get_window_attributes_reply_t *attrib; + + tree_cookie = xcb_query_tree(conn, window); + attrib_cookie = xcb_get_window_attributes(conn, window); + + tree = xcb_query_tree_reply(conn, tree_cookie, NULL); + attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL); + if (attrib == NULL || tree == NULL) { + free(attrib); + free(tree); + return NULL; + } + + xcb_window_t root = tree->root; + xcb_visualid_t visual_id = attrib->visual; + free(attrib); + free(tree); + + xcb_screen_t *screen = get_screen_for_root(conn, root); + if (screen == NULL) + return NULL; + + return screen_get_visualtype(screen, visual_id, depth); +} + +static bool +visual_has_alpha(xcb_visualtype_t *visual, unsigned depth) +{ + uint32_t rgb_mask = visual->red_mask | + visual->green_mask | + visual->blue_mask; + + uint32_t all_mask = 0xffffffff >> (32 - depth); + + /* Do we have bits left over after RGB? */ + return (all_mask & ~rgb_mask) != 0; +} + +VkBool32 wsi_get_physical_device_xcb_presentation_support( + struct wsi_device *wsi_device, + VkAllocationCallbacks *alloc, + uint32_t queueFamilyIndex, + xcb_connection_t* connection, + xcb_visualid_t visual_id) +{ + struct wsi_x11_connection *wsi_conn = + wsi_x11_get_connection(wsi_device, alloc, connection); + + if (!wsi_conn->has_dri3) { + fprintf(stderr, "vulkan: No DRI3 support\n"); + return false; + } + + unsigned visual_depth; + if (!connection_get_visualtype(connection, visual_id, &visual_depth)) + return false; + + if (visual_depth != 24 && visual_depth != 32) + return false; + + return true; +} + +static xcb_connection_t* +x11_surface_get_connection(VkIcdSurfaceBase *icd_surface) +{ + if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB) + return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy); + else + return ((VkIcdSurfaceXcb *)icd_surface)->connection; +} + +static xcb_window_t +x11_surface_get_window(VkIcdSurfaceBase *icd_surface) +{ + if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB) + return ((VkIcdSurfaceXlib *)icd_surface)->window; + else + return ((VkIcdSurfaceXcb *)icd_surface)->window; +} + +static VkResult +x11_surface_get_support(VkIcdSurfaceBase *icd_surface, + struct wsi_device *wsi_device, + const VkAllocationCallbacks *alloc, + uint32_t queueFamilyIndex, + VkBool32* pSupported) +{ + xcb_connection_t *conn = x11_surface_get_connection(icd_surface); + xcb_window_t window = x11_surface_get_window(icd_surface); + + struct wsi_x11_connection *wsi_conn = + wsi_x11_get_connection(wsi_device, alloc, conn); + if (!wsi_conn) + return VK_ERROR_OUT_OF_HOST_MEMORY; + + if (!wsi_conn->has_dri3) { + fprintf(stderr, "vulkan: No DRI3 support\n"); + *pSupported = false; + return VK_SUCCESS; + } + + unsigned visual_depth; + if (!get_visualtype_for_window(conn, window, &visual_depth)) { + *pSupported = false; + return VK_SUCCESS; + } + + if (visual_depth != 24 && visual_depth != 32) { + *pSupported = false; + return VK_SUCCESS; + } + + *pSupported = true; + return VK_SUCCESS; +} + +static VkResult +x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface, + VkSurfaceCapabilitiesKHR *caps) +{ + xcb_connection_t *conn = x11_surface_get_connection(icd_surface); + xcb_window_t window = x11_surface_get_window(icd_surface); + xcb_get_geometry_cookie_t geom_cookie; + xcb_generic_error_t *err; + xcb_get_geometry_reply_t *geom; + unsigned visual_depth; + + geom_cookie = xcb_get_geometry(conn, window); + + /* This does a round-trip. This is why we do get_geometry first and + * wait to read the reply until after we have a visual. + */ + xcb_visualtype_t *visual = + get_visualtype_for_window(conn, window, &visual_depth); + + geom = xcb_get_geometry_reply(conn, geom_cookie, &err); + if (geom) { + VkExtent2D extent = { geom->width, geom->height }; + caps->currentExtent = extent; + caps->minImageExtent = extent; + caps->maxImageExtent = extent; + } else { + /* This can happen if the client didn't wait for the configure event + * to come back from the compositor. In that case, we don't know the + * size of the window so we just return valid "I don't know" stuff. + */ + caps->currentExtent = (VkExtent2D) { -1, -1 }; + caps->minImageExtent = (VkExtent2D) { 1, 1 }; + caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX }; + } + free(err); + free(geom); + + if (visual_has_alpha(visual, visual_depth)) { + caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR | + VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR; + } else { + caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR | + VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; + } + + caps->minImageCount = 2; + caps->maxImageCount = 4; + caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; + caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; + caps->maxImageArrayLayers = 1; + caps->supportedUsageFlags = + VK_IMAGE_USAGE_TRANSFER_SRC_BIT | + VK_IMAGE_USAGE_SAMPLED_BIT | + VK_IMAGE_USAGE_TRANSFER_DST_BIT | + VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; + + return VK_SUCCESS; +} + +static VkResult +x11_surface_get_formats(VkIcdSurfaceBase *surface, + struct wsi_device *wsi_device, + uint32_t *pSurfaceFormatCount, + VkSurfaceFormatKHR *pSurfaceFormats) +{ + if (pSurfaceFormats == NULL) { + *pSurfaceFormatCount = ARRAY_SIZE(formats); + return VK_SUCCESS; + } + + assert(*pSurfaceFormatCount >= ARRAY_SIZE(formats)); + typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount); + *pSurfaceFormatCount = ARRAY_SIZE(formats); + + return VK_SUCCESS; +} + +static VkResult +x11_surface_get_present_modes(VkIcdSurfaceBase *surface, + uint32_t *pPresentModeCount, + VkPresentModeKHR *pPresentModes) +{ + if (pPresentModes == NULL) { + *pPresentModeCount = ARRAY_SIZE(present_modes); + return VK_SUCCESS; + } + + assert(*pPresentModeCount >= ARRAY_SIZE(present_modes)); + typed_memcpy(pPresentModes, present_modes, *pPresentModeCount); + *pPresentModeCount = ARRAY_SIZE(present_modes); + + return VK_SUCCESS; +} + +VkResult wsi_create_xcb_surface(const VkAllocationCallbacks *pAllocator, + const VkXcbSurfaceCreateInfoKHR *pCreateInfo, + VkSurfaceKHR *pSurface) +{ + VkIcdSurfaceXcb *surface; + + surface = vk_alloc(pAllocator, sizeof *surface, 8, + VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); + if (surface == NULL) + return VK_ERROR_OUT_OF_HOST_MEMORY; + + surface->base.platform = VK_ICD_WSI_PLATFORM_XCB; + surface->connection = pCreateInfo->connection; + surface->window = pCreateInfo->window; + + *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base); + return VK_SUCCESS; +} + +VkResult wsi_create_xlib_surface(const VkAllocationCallbacks *pAllocator, + const VkXlibSurfaceCreateInfoKHR *pCreateInfo, + VkSurfaceKHR *pSurface) +{ + VkIcdSurfaceXlib *surface; + + surface = vk_alloc(pAllocator, sizeof *surface, 8, + VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); + if (surface == NULL) + return VK_ERROR_OUT_OF_HOST_MEMORY; + + surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB; + surface->dpy = pCreateInfo->dpy; + surface->window = pCreateInfo->window; + + *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base); + return VK_SUCCESS; +} + +struct x11_image { + VkImage image; + VkDeviceMemory memory; + xcb_pixmap_t pixmap; + bool busy; + struct xshmfence * shm_fence; + uint32_t sync_fence; +}; + +struct x11_swapchain { + struct wsi_swapchain base; + + xcb_connection_t * conn; + xcb_window_t window; + xcb_gc_t gc; + VkExtent2D extent; + uint32_t image_count; + + xcb_present_event_t event_id; + xcb_special_event_t * special_event; + uint64_t send_sbc; + uint32_t stamp; + + struct x11_image images[0]; +}; + +static VkResult +x11_get_images(struct wsi_swapchain *anv_chain, + uint32_t* pCount, VkImage *pSwapchainImages) +{ + struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; + + if (pSwapchainImages == NULL) { + *pCount = chain->image_count; + return VK_SUCCESS; + } + + assert(chain->image_count <= *pCount); + for (uint32_t i = 0; i < chain->image_count; i++) + pSwapchainImages[i] = chain->images[i].image; + + *pCount = chain->image_count; + + return VK_SUCCESS; +} + +static VkResult +x11_handle_dri3_present_event(struct x11_swapchain *chain, + xcb_present_generic_event_t *event) +{ + switch (event->evtype) { + case XCB_PRESENT_CONFIGURE_NOTIFY: { + xcb_present_configure_notify_event_t *config = (void *) event; + + if (config->width != chain->extent.width || + config->height != chain->extent.height) + return VK_ERROR_OUT_OF_DATE_KHR; + + break; + } + + case XCB_PRESENT_EVENT_IDLE_NOTIFY: { + xcb_present_idle_notify_event_t *idle = (void *) event; + + for (unsigned i = 0; i < chain->image_count; i++) { + if (chain->images[i].pixmap == idle->pixmap) { + chain->images[i].busy = false; + break; + } + } + + break; + } + + case XCB_PRESENT_COMPLETE_NOTIFY: + default: + break; + } + + return VK_SUCCESS; +} + +static VkResult +x11_acquire_next_image(struct wsi_swapchain *anv_chain, + uint64_t timeout, + VkSemaphore semaphore, + uint32_t *image_index) +{ + struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; + + while (1) { + for (uint32_t i = 0; i < chain->image_count; i++) { + if (!chain->images[i].busy) { + /* We found a non-busy image */ + xshmfence_await(chain->images[i].shm_fence); + *image_index = i; + chain->images[i].busy = true; + return VK_SUCCESS; + } + } + + xcb_flush(chain->conn); + xcb_generic_event_t *event = + xcb_wait_for_special_event(chain->conn, chain->special_event); + if (!event) + return VK_ERROR_OUT_OF_DATE_KHR; + + VkResult result = x11_handle_dri3_present_event(chain, (void *)event); + free(event); + if (result != VK_SUCCESS) + return result; + } +} + +static VkResult +x11_queue_present(struct wsi_swapchain *anv_chain, + uint32_t image_index) +{ + struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; + struct x11_image *image = &chain->images[image_index]; + + assert(image_index < chain->image_count); + + uint32_t options = XCB_PRESENT_OPTION_NONE; + + int64_t target_msc = 0; + int64_t divisor = 0; + int64_t remainder = 0; + + options |= XCB_PRESENT_OPTION_ASYNC; + + xshmfence_reset(image->shm_fence); + + ++chain->send_sbc; + xcb_void_cookie_t cookie = + xcb_present_pixmap(chain->conn, + chain->window, + image->pixmap, + (uint32_t) chain->send_sbc, + 0, /* valid */ + 0, /* update */ + 0, /* x_off */ + 0, /* y_off */ + XCB_NONE, /* target_crtc */ + XCB_NONE, + image->sync_fence, + options, + target_msc, + divisor, + remainder, 0, NULL); + xcb_discard_reply(chain->conn, cookie.sequence); + image->busy = true; + + xcb_flush(chain->conn); + + return VK_SUCCESS; +} + +static VkResult +x11_image_init(VkDevice device_h, struct x11_swapchain *chain, + const VkSwapchainCreateInfoKHR *pCreateInfo, + const VkAllocationCallbacks* pAllocator, + struct x11_image *image) +{ + xcb_void_cookie_t cookie; + VkResult result; + uint32_t row_pitch; + uint32_t offset; + uint32_t bpp = 32; + uint32_t depth = 24; + int fd; + uint32_t size; + + result = chain->base.image_fns->create_wsi_image(device_h, + pCreateInfo, + pAllocator, + &image->image, + &image->memory, + &size, + &offset, + &row_pitch, + &fd); + if (result != VK_SUCCESS) + return result; + + image->pixmap = xcb_generate_id(chain->conn); + + cookie = + xcb_dri3_pixmap_from_buffer_checked(chain->conn, + image->pixmap, + chain->window, + size, + pCreateInfo->imageExtent.width, + pCreateInfo->imageExtent.height, + row_pitch, + depth, bpp, fd); + xcb_discard_reply(chain->conn, cookie.sequence); + + int fence_fd = xshmfence_alloc_shm(); + if (fence_fd < 0) + goto fail_pixmap; + + image->shm_fence = xshmfence_map_shm(fence_fd); + if (image->shm_fence == NULL) + goto fail_shmfence_alloc; + + image->sync_fence = xcb_generate_id(chain->conn); + xcb_dri3_fence_from_fd(chain->conn, + image->pixmap, + image->sync_fence, + false, + fence_fd); + + image->busy = false; + xshmfence_trigger(image->shm_fence); + + return VK_SUCCESS; + +fail_shmfence_alloc: + close(fence_fd); + +fail_pixmap: + cookie = xcb_free_pixmap(chain->conn, image->pixmap); + xcb_discard_reply(chain->conn, cookie.sequence); + + chain->base.image_fns->free_wsi_image(device_h, pAllocator, + image->image, image->memory); + + return result; +} + +static void +x11_image_finish(struct x11_swapchain *chain, + const VkAllocationCallbacks* pAllocator, + struct x11_image *image) +{ + xcb_void_cookie_t cookie; + + cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence); + xcb_discard_reply(chain->conn, cookie.sequence); + xshmfence_unmap_shm(image->shm_fence); + + cookie = xcb_free_pixmap(chain->conn, image->pixmap); + xcb_discard_reply(chain->conn, cookie.sequence); + + chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator, + image->image, image->memory); +} + +static VkResult +x11_swapchain_destroy(struct wsi_swapchain *anv_chain, + const VkAllocationCallbacks *pAllocator) +{ + struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; + for (uint32_t i = 0; i < chain->image_count; i++) + x11_image_finish(chain, pAllocator, &chain->images[i]); + + xcb_unregister_for_special_event(chain->conn, chain->special_event); + + vk_free(pAllocator, chain); + + return VK_SUCCESS; +} + +static VkResult +x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface, + VkDevice device, + struct wsi_device *wsi_device, + const VkSwapchainCreateInfoKHR *pCreateInfo, + const VkAllocationCallbacks* pAllocator, + const struct wsi_image_fns *image_fns, + struct wsi_swapchain **swapchain_out) +{ + struct x11_swapchain *chain; + xcb_void_cookie_t cookie; + VkResult result; + + assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR); + + int num_images = pCreateInfo->minImageCount; + + /* For true mailbox mode, we need at least 4 images: + * 1) One to scan out from + * 2) One to have queued for scan-out + * 3) One to be currently held by the Wayland compositor + * 4) One to render to + */ + if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR) + num_images = MAX2(num_images, 4); + + size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]); + chain = vk_alloc(pAllocator, size, 8, + VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); + if (chain == NULL) + return VK_ERROR_OUT_OF_HOST_MEMORY; + + chain->base.device = device; + chain->base.destroy = x11_swapchain_destroy; + chain->base.get_images = x11_get_images; + chain->base.acquire_next_image = x11_acquire_next_image; + chain->base.queue_present = x11_queue_present; + chain->base.image_fns = image_fns; + chain->conn = x11_surface_get_connection(icd_surface); + chain->window = x11_surface_get_window(icd_surface); + chain->extent = pCreateInfo->imageExtent; + chain->image_count = num_images; + chain->send_sbc = 0; + + chain->event_id = xcb_generate_id(chain->conn); + xcb_present_select_input(chain->conn, chain->event_id, chain->window, + XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY | + XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY | + XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY); + + /* Create an XCB event queue to hold present events outside of the usual + * application event queue + */ + chain->special_event = + xcb_register_for_special_xge(chain->conn, &xcb_present_id, + chain->event_id, NULL); + + chain->gc = xcb_generate_id(chain->conn); + if (!chain->gc) { + /* FINISHME: Choose a better error. */ + result = VK_ERROR_OUT_OF_HOST_MEMORY; + goto fail_register; + } + + cookie = xcb_create_gc(chain->conn, + chain->gc, + chain->window, + XCB_GC_GRAPHICS_EXPOSURES, + (uint32_t []) { 0 }); + xcb_discard_reply(chain->conn, cookie.sequence); + + uint32_t image = 0; + for (; image < chain->image_count; image++) { + result = x11_image_init(device, chain, pCreateInfo, pAllocator, + &chain->images[image]); + if (result != VK_SUCCESS) + goto fail_init_images; + } + + *swapchain_out = &chain->base; + + return VK_SUCCESS; + +fail_init_images: + for (uint32_t j = 0; j < image; j++) + x11_image_finish(chain, pAllocator, &chain->images[j]); + +fail_register: + xcb_unregister_for_special_event(chain->conn, chain->special_event); + + vk_free(pAllocator, chain); + + return result; +} + +VkResult +wsi_x11_init_wsi(struct wsi_device *wsi_device, + const VkAllocationCallbacks *alloc) +{ + struct wsi_x11 *wsi; + VkResult result; + + wsi = vk_alloc(alloc, sizeof(*wsi), 8, + VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE); + if (!wsi) { + result = VK_ERROR_OUT_OF_HOST_MEMORY; + goto fail; + } + + int ret = pthread_mutex_init(&wsi->mutex, NULL); + if (ret != 0) { + if (ret == ENOMEM) { + result = VK_ERROR_OUT_OF_HOST_MEMORY; + } else { + /* FINISHME: Choose a better error. */ + result = VK_ERROR_OUT_OF_HOST_MEMORY; + } + + goto fail_alloc; + } + + wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer, + _mesa_key_pointer_equal); + if (!wsi->connections) { + result = VK_ERROR_OUT_OF_HOST_MEMORY; + goto fail_mutex; + } + + wsi->base.get_support = x11_surface_get_support; + wsi->base.get_capabilities = x11_surface_get_capabilities; + wsi->base.get_formats = x11_surface_get_formats; + wsi->base.get_present_modes = x11_surface_get_present_modes; + wsi->base.create_swapchain = x11_surface_create_swapchain; + + wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base; + wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base; + + return VK_SUCCESS; + +fail_mutex: + pthread_mutex_destroy(&wsi->mutex); +fail_alloc: + vk_free(alloc, wsi); +fail: + wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL; + wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL; + + return result; +} + +void +wsi_x11_finish_wsi(struct wsi_device *wsi_device, + const VkAllocationCallbacks *alloc) +{ + struct wsi_x11 *wsi = + (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB]; + + if (wsi) { + _mesa_hash_table_destroy(wsi->connections, NULL); + + pthread_mutex_destroy(&wsi->mutex); + + vk_free(alloc, wsi); + } +} |