mirror of
https://github.com/mpv-player/mpv
synced 2025-02-17 13:17:13 +00:00
b8bb5329a5
By design, some vulkan implementations block until vsync during vkAcquireNextImageKHR. Since mpv only considers the time that `swap_buffers` spent blocking as constituting part of the vsync, we can help it out a bit by pre-emptively calling this function here in order to improve the accuracy of vsync jitter measurements on vulkan. (If it fails, we just ignore the error and have the user call it a second time later - maybe it will work then) On my system this drops vsync-jitter from ~0.030 to ~0.007, an accuracy of +/- 100μs. (Which *might* have something to do with the fact that this is the polling interval for command polling)
595 lines
19 KiB
C
595 lines
19 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "options/m_config.h"
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#include "video/out/gpu/spirv.h"
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#include "context.h"
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#include "ra_vk.h"
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#include "utils.h"
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enum {
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SWAP_AUTO = 0,
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SWAP_FIFO,
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SWAP_FIFO_RELAXED,
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SWAP_MAILBOX,
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SWAP_IMMEDIATE,
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SWAP_COUNT,
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};
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struct vulkan_opts {
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struct mpvk_device_opts dev_opts; // logical device options
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char *device; // force a specific GPU
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int swap_mode;
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};
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static int vk_validate_dev(struct mp_log *log, const struct m_option *opt,
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struct bstr name, struct bstr param)
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{
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int ret = M_OPT_INVALID;
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VkResult res;
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// Create a dummy instance to validate/list the devices
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VkInstanceCreateInfo info = {
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.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
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};
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VkInstance inst;
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VkPhysicalDevice *devices = NULL;
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uint32_t num = 0;
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res = vkCreateInstance(&info, MPVK_ALLOCATOR, &inst);
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if (res != VK_SUCCESS)
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goto done;
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res = vkEnumeratePhysicalDevices(inst, &num, NULL);
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if (res != VK_SUCCESS)
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goto done;
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devices = talloc_array(NULL, VkPhysicalDevice, num);
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vkEnumeratePhysicalDevices(inst, &num, devices);
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if (res != VK_SUCCESS)
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goto done;
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bool help = bstr_equals0(param, "help");
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if (help) {
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mp_info(log, "Available vulkan devices:\n");
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ret = M_OPT_EXIT;
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}
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for (int i = 0; i < num; i++) {
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VkPhysicalDeviceProperties prop;
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vkGetPhysicalDeviceProperties(devices[i], &prop);
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if (help) {
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mp_info(log, " '%s' (GPU %d, ID %x:%x)\n", prop.deviceName, i,
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(unsigned)prop.vendorID, (unsigned)prop.deviceID);
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} else if (bstr_equals0(param, prop.deviceName)) {
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ret = 0;
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goto done;
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}
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}
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if (!help)
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mp_err(log, "No device with name '%.*s'!\n", BSTR_P(param));
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done:
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talloc_free(devices);
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return ret;
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}
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#define OPT_BASE_STRUCT struct vulkan_opts
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const struct m_sub_options vulkan_conf = {
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.opts = (const struct m_option[]) {
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OPT_STRING_VALIDATE("vulkan-device", device, 0, vk_validate_dev),
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OPT_CHOICE("vulkan-swap-mode", swap_mode, 0,
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({"auto", SWAP_AUTO},
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{"fifo", SWAP_FIFO},
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{"fifo-relaxed", SWAP_FIFO_RELAXED},
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{"mailbox", SWAP_MAILBOX},
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{"immediate", SWAP_IMMEDIATE})),
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OPT_INTRANGE("vulkan-queue-count", dev_opts.queue_count, 0, 1, 8,
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OPTDEF_INT(1)),
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OPT_FLAG("vulkan-async-transfer", dev_opts.async_transfer, 0),
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OPT_FLAG("vulkan-async-compute", dev_opts.async_compute, 0),
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{0}
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},
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.size = sizeof(struct vulkan_opts),
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.defaults = &(struct vulkan_opts) {
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.dev_opts = {
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.async_transfer = 1,
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},
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},
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};
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struct priv {
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struct mpvk_ctx *vk;
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struct vulkan_opts *opts;
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// Swapchain metadata:
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int w, h; // current size
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VkSwapchainCreateInfoKHR protoInfo; // partially filled-in prototype
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VkSwapchainKHR swapchain;
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VkSwapchainKHR old_swapchain;
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int frames_in_flight;
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// state of the images:
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struct ra_tex **images; // ra_tex wrappers for the vkimages
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int num_images; // size of images
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VkSemaphore *sems_in; // pool of semaphores used to synchronize images
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VkSemaphore *sems_out; // outgoing semaphores (rendering complete)
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int num_sems;
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int idx_sems; // index of next free semaphore pair
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int last_imgidx; // the image index last acquired (for submit)
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// This is used to pre-fetch the next frame at the end of swap_buffers
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struct ra_fbo queued_fbo;
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};
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static const struct ra_swapchain_fns vulkan_swapchain;
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struct mpvk_ctx *ra_vk_ctx_get(struct ra_ctx *ctx)
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{
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if (ctx->swapchain->fns != &vulkan_swapchain)
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return NULL;
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struct priv *p = ctx->swapchain->priv;
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return p->vk;
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}
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static bool update_swapchain_info(struct priv *p,
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VkSwapchainCreateInfoKHR *info)
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{
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struct mpvk_ctx *vk = p->vk;
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// Query the supported capabilities and update this struct as needed
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VkSurfaceCapabilitiesKHR caps;
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VK(vkGetPhysicalDeviceSurfaceCapabilitiesKHR(vk->physd, vk->surf, &caps));
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// Sorted by preference
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static const VkCompositeAlphaFlagsKHR alphaModes[] = {
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VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR,
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VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
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};
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for (int i = 0; i < MP_ARRAY_SIZE(alphaModes); i++) {
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if (caps.supportedCompositeAlpha & alphaModes[i]) {
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info->compositeAlpha = alphaModes[i];
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break;
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}
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}
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if (!info->compositeAlpha) {
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MP_ERR(vk, "Failed picking alpha compositing mode (caps: 0x%x)\n",
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caps.supportedCompositeAlpha);
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goto error;
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}
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static const VkSurfaceTransformFlagsKHR rotModes[] = {
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VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR,
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VK_SURFACE_TRANSFORM_INHERIT_BIT_KHR,
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};
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for (int i = 0; i < MP_ARRAY_SIZE(rotModes); i++) {
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if (caps.supportedTransforms & rotModes[i]) {
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info->preTransform = rotModes[i];
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break;
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}
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}
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if (!info->preTransform) {
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MP_ERR(vk, "Failed picking surface transform mode (caps: 0x%x)\n",
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caps.supportedTransforms);
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goto error;
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}
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// Image count as required
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MP_VERBOSE(vk, "Requested image count: %d (min %d max %d)\n",
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(int)info->minImageCount, (int)caps.minImageCount,
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(int)caps.maxImageCount);
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info->minImageCount = MPMAX(info->minImageCount, caps.minImageCount);
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if (caps.maxImageCount)
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info->minImageCount = MPMIN(info->minImageCount, caps.maxImageCount);
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// Check the extent against the allowed parameters
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if (caps.currentExtent.width != info->imageExtent.width &&
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caps.currentExtent.width != 0xFFFFFFFF)
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{
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MP_WARN(vk, "Requested width %d does not match current width %d\n",
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(int)info->imageExtent.width, (int)caps.currentExtent.width);
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info->imageExtent.width = caps.currentExtent.width;
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}
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if (caps.currentExtent.height != info->imageExtent.height &&
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caps.currentExtent.height != 0xFFFFFFFF)
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{
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MP_WARN(vk, "Requested height %d does not match current height %d\n",
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(int)info->imageExtent.height, (int)caps.currentExtent.height);
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info->imageExtent.height = caps.currentExtent.height;
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}
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if (caps.minImageExtent.width > info->imageExtent.width ||
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caps.minImageExtent.height > info->imageExtent.height)
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{
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MP_ERR(vk, "Requested size %dx%d smaller than device minimum %d%d\n",
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(int)info->imageExtent.width, (int)info->imageExtent.height,
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(int)caps.minImageExtent.width, (int)caps.minImageExtent.height);
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goto error;
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}
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if (caps.maxImageExtent.width < info->imageExtent.width ||
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caps.maxImageExtent.height < info->imageExtent.height)
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{
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MP_ERR(vk, "Requested size %dx%d larger than device maximum %d%d\n",
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(int)info->imageExtent.width, (int)info->imageExtent.height,
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(int)caps.maxImageExtent.width, (int)caps.maxImageExtent.height);
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goto error;
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}
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// We just request whatever usage we can, and let the ra_vk decide what
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// ra_tex_params that translates to. This makes the images as flexible
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// as possible.
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info->imageUsage = caps.supportedUsageFlags;
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return true;
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error:
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return false;
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}
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void ra_vk_ctx_uninit(struct ra_ctx *ctx)
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{
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if (ctx->ra) {
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struct priv *p = ctx->swapchain->priv;
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struct mpvk_ctx *vk = p->vk;
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mpvk_flush_commands(vk);
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mpvk_poll_commands(vk, UINT64_MAX);
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for (int i = 0; i < p->num_images; i++)
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ra_tex_free(ctx->ra, &p->images[i]);
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for (int i = 0; i < p->num_sems; i++) {
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vkDestroySemaphore(vk->dev, p->sems_in[i], MPVK_ALLOCATOR);
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vkDestroySemaphore(vk->dev, p->sems_out[i], MPVK_ALLOCATOR);
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}
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vkDestroySwapchainKHR(vk->dev, p->swapchain, MPVK_ALLOCATOR);
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ctx->ra->fns->destroy(ctx->ra);
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ctx->ra = NULL;
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}
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talloc_free(ctx->swapchain);
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ctx->swapchain = NULL;
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}
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static const struct ra_swapchain_fns vulkan_swapchain;
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bool ra_vk_ctx_init(struct ra_ctx *ctx, struct mpvk_ctx *vk,
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VkPresentModeKHR preferred_mode)
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{
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struct ra_swapchain *sw = ctx->swapchain = talloc_zero(NULL, struct ra_swapchain);
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sw->ctx = ctx;
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sw->fns = &vulkan_swapchain;
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struct priv *p = sw->priv = talloc_zero(sw, struct priv);
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p->vk = vk;
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p->opts = mp_get_config_group(p, ctx->global, &vulkan_conf);
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if (!mpvk_find_phys_device(vk, p->opts->device, ctx->opts.allow_sw))
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goto error;
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if (!spirv_compiler_init(ctx))
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goto error;
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vk->spirv = ctx->spirv;
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if (!mpvk_pick_surface_format(vk))
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goto error;
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if (!mpvk_device_init(vk, p->opts->dev_opts))
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goto error;
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ctx->ra = ra_create_vk(vk, ctx->log);
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if (!ctx->ra)
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goto error;
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static const VkPresentModeKHR present_modes[SWAP_COUNT] = {
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[SWAP_FIFO] = VK_PRESENT_MODE_FIFO_KHR,
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[SWAP_FIFO_RELAXED] = VK_PRESENT_MODE_FIFO_RELAXED_KHR,
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[SWAP_MAILBOX] = VK_PRESENT_MODE_MAILBOX_KHR,
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[SWAP_IMMEDIATE] = VK_PRESENT_MODE_IMMEDIATE_KHR,
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};
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p->protoInfo = (VkSwapchainCreateInfoKHR) {
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.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
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.surface = vk->surf,
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.imageFormat = vk->surf_format.format,
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.imageColorSpace = vk->surf_format.colorSpace,
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.imageArrayLayers = 1, // non-stereoscopic
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.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE,
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.minImageCount = ctx->opts.swapchain_depth + 1, // +1 for FB
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.presentMode = p->opts->swap_mode ? present_modes[p->opts->swap_mode]
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: preferred_mode,
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.clipped = true,
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};
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// Make sure the swapchain present mode is supported
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int num_modes;
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VK(vkGetPhysicalDeviceSurfacePresentModesKHR(vk->physd, vk->surf,
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&num_modes, NULL));
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VkPresentModeKHR *modes = talloc_array(NULL, VkPresentModeKHR, num_modes);
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VK(vkGetPhysicalDeviceSurfacePresentModesKHR(vk->physd, vk->surf,
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&num_modes, modes));
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bool supported = false;
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for (int i = 0; i < num_modes; i++)
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supported |= (modes[i] == p->protoInfo.presentMode);
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talloc_free(modes);
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if (!supported) {
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MP_ERR(ctx, "Requested swap mode unsupported by this device!\n");
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goto error;
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}
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return true;
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error:
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ra_vk_ctx_uninit(ctx);
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return false;
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}
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static void destroy_swapchain(struct mpvk_ctx *vk, struct priv *p)
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{
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assert(p->old_swapchain);
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vkDestroySwapchainKHR(vk->dev, p->old_swapchain, MPVK_ALLOCATOR);
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p->old_swapchain = NULL;
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}
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bool ra_vk_ctx_resize(struct ra_swapchain *sw, int w, int h)
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{
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struct priv *p = sw->priv;
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if (w == p->w && h == p->h)
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return true;
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struct ra *ra = sw->ctx->ra;
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struct mpvk_ctx *vk = p->vk;
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VkImage *vkimages = NULL;
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// It's invalid to trigger another swapchain recreation while there's
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// more than one swapchain already active, so we need to flush any pending
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// asynchronous swapchain release operations that may be ongoing.
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while (p->old_swapchain)
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mpvk_poll_commands(vk, 100000); // 100μs
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VkSwapchainCreateInfoKHR sinfo = p->protoInfo;
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sinfo.imageExtent = (VkExtent2D){ w, h };
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sinfo.oldSwapchain = p->swapchain;
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if (!update_swapchain_info(p, &sinfo))
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goto error;
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VK(vkCreateSwapchainKHR(vk->dev, &sinfo, MPVK_ALLOCATOR, &p->swapchain));
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p->w = w;
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p->h = h;
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// Freeing the old swapchain while it's still in use is an error, so do
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// it asynchronously once the device is idle.
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if (sinfo.oldSwapchain) {
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p->old_swapchain = sinfo.oldSwapchain;
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vk_dev_callback(vk, (vk_cb) destroy_swapchain, vk, p);
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}
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// Get the new swapchain images
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int num;
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VK(vkGetSwapchainImagesKHR(vk->dev, p->swapchain, &num, NULL));
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vkimages = talloc_array(NULL, VkImage, num);
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VK(vkGetSwapchainImagesKHR(vk->dev, p->swapchain, &num, vkimages));
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// If needed, allocate some more semaphores
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while (num > p->num_sems) {
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VkSemaphore sem_in, sem_out;
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static const VkSemaphoreCreateInfo seminfo = {
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.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO,
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};
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VK(vkCreateSemaphore(vk->dev, &seminfo, MPVK_ALLOCATOR, &sem_in));
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VK(vkCreateSemaphore(vk->dev, &seminfo, MPVK_ALLOCATOR, &sem_out));
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int idx = p->num_sems++;
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MP_TARRAY_GROW(p, p->sems_in, idx);
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MP_TARRAY_GROW(p, p->sems_out, idx);
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p->sems_in[idx] = sem_in;
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p->sems_out[idx] = sem_out;
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}
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// Invalidate the queued texture
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p->queued_fbo = (struct ra_fbo) {0};
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// Recreate the ra_tex wrappers
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for (int i = 0; i < p->num_images; i++)
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ra_tex_free(ra, &p->images[i]);
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p->num_images = num;
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MP_TARRAY_GROW(p, p->images, p->num_images);
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for (int i = 0; i < num; i++) {
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p->images[i] = ra_vk_wrap_swapchain_img(ra, vkimages[i], sinfo);
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if (!p->images[i])
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goto error;
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}
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talloc_free(vkimages);
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return true;
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error:
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talloc_free(vkimages);
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vkDestroySwapchainKHR(vk->dev, p->swapchain, MPVK_ALLOCATOR);
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p->swapchain = NULL;
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return false;
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}
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static int color_depth(struct ra_swapchain *sw)
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{
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struct priv *p = sw->priv;
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int bits = 0;
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if (!p->num_images)
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return bits;
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// The channel with the most bits is probably the most authoritative about
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// the actual color information (consider e.g. a2bgr10). Slight downside
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// in that it results in rounding r/b for e.g. rgb565, but we don't pick
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// surfaces with fewer than 8 bits anyway.
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const struct ra_format *fmt = p->images[0]->params.format;
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for (int i = 0; i < fmt->num_components; i++) {
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int depth = fmt->component_depth[i];
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bits = MPMAX(bits, depth ? depth : fmt->component_size[i]);
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}
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return bits;
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}
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static bool start_frame(struct ra_swapchain *sw, struct ra_fbo *out_fbo)
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{
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struct priv *p = sw->priv;
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struct mpvk_ctx *vk = p->vk;
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if (!p->swapchain)
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return false;
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if (p->queued_fbo.tex) {
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assert(out_fbo != &p->queued_fbo);
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*out_fbo = p->queued_fbo;
|
|
p->queued_fbo = (struct ra_fbo) {0};
|
|
return true;
|
|
}
|
|
|
|
VkSemaphore sem_in = p->sems_in[p->idx_sems];
|
|
MP_TRACE(vk, "vkAcquireNextImageKHR signals %p\n", (void *)sem_in);
|
|
|
|
for (int attempts = 0; attempts < 2; attempts++) {
|
|
uint32_t imgidx = 0;
|
|
VkResult res = vkAcquireNextImageKHR(vk->dev, p->swapchain, UINT64_MAX,
|
|
sem_in, NULL, &imgidx);
|
|
|
|
switch (res) {
|
|
case VK_SUCCESS:
|
|
p->last_imgidx = imgidx;
|
|
*out_fbo = (struct ra_fbo) {
|
|
.tex = p->images[imgidx],
|
|
.flip = false,
|
|
};
|
|
ra_tex_vk_external_dep(sw->ctx->ra, out_fbo->tex, sem_in);
|
|
return true;
|
|
|
|
case VK_ERROR_OUT_OF_DATE_KHR: {
|
|
// In these cases try recreating the swapchain
|
|
int w = p->w, h = p->h;
|
|
p->w = p->h = 0; // invalidate the current state
|
|
if (!ra_vk_ctx_resize(sw, w, h))
|
|
return false;
|
|
continue;
|
|
}
|
|
|
|
default:
|
|
MP_ERR(vk, "Failed acquiring swapchain image: %s\n", vk_err(res));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// If we've exhausted the number of attempts to recreate the swapchain,
|
|
// just give up silently.
|
|
return false;
|
|
}
|
|
|
|
static void present_cb(struct priv *p, void *arg)
|
|
{
|
|
p->frames_in_flight--;
|
|
}
|
|
|
|
static bool submit_frame(struct ra_swapchain *sw, const struct vo_frame *frame)
|
|
{
|
|
struct priv *p = sw->priv;
|
|
struct ra *ra = sw->ctx->ra;
|
|
struct mpvk_ctx *vk = p->vk;
|
|
if (!p->swapchain)
|
|
return false;
|
|
|
|
struct vk_cmd *cmd = ra_vk_submit(ra, p->images[p->last_imgidx]);
|
|
if (!cmd)
|
|
return false;
|
|
|
|
VkSemaphore sem_out = p->sems_out[p->idx_sems++];
|
|
p->idx_sems %= p->num_sems;
|
|
vk_cmd_sig(cmd, sem_out);
|
|
|
|
p->frames_in_flight++;
|
|
vk_cmd_callback(cmd, (vk_cb) present_cb, p, NULL);
|
|
|
|
vk_cmd_queue(vk, cmd);
|
|
if (!mpvk_flush_commands(vk))
|
|
return false;
|
|
|
|
// Submit to the same queue that we were currently rendering to
|
|
struct vk_cmdpool *pool_gfx = vk->pool_graphics;
|
|
VkQueue queue = pool_gfx->queues[pool_gfx->idx_queues];
|
|
|
|
// Rotate the queues to ensure good parallelism across frames
|
|
for (int i = 0; i < vk->num_pools; i++) {
|
|
struct vk_cmdpool *pool = vk->pools[i];
|
|
pool->idx_queues = (pool->idx_queues + 1) % pool->num_queues;
|
|
}
|
|
|
|
VkPresentInfoKHR pinfo = {
|
|
.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR,
|
|
.waitSemaphoreCount = 1,
|
|
.pWaitSemaphores = &sem_out,
|
|
.swapchainCount = 1,
|
|
.pSwapchains = &p->swapchain,
|
|
.pImageIndices = &p->last_imgidx,
|
|
};
|
|
|
|
MP_TRACE(vk, "vkQueuePresentKHR waits on %p\n", (void *)sem_out);
|
|
VkResult res = vkQueuePresentKHR(queue, &pinfo);
|
|
switch (res) {
|
|
case VK_SUCCESS:
|
|
case VK_SUBOPTIMAL_KHR:
|
|
return true;
|
|
|
|
case VK_ERROR_OUT_OF_DATE_KHR:
|
|
// We can silently ignore this error, since the next start_frame will
|
|
// recreate the swapchain automatically.
|
|
return true;
|
|
|
|
default:
|
|
MP_ERR(vk, "Failed presenting to queue %p: %s\n", (void *)queue,
|
|
vk_err(res));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static void swap_buffers(struct ra_swapchain *sw)
|
|
{
|
|
struct priv *p = sw->priv;
|
|
|
|
while (p->frames_in_flight >= sw->ctx->opts.swapchain_depth)
|
|
mpvk_poll_commands(p->vk, 100000); // 100μs
|
|
|
|
// Also try and block until the next hardware buffer swap early. this
|
|
// prevents start_frame from blocking later, thus slightly improving the
|
|
// frame timing stats. (since mpv assumes most blocking will happen in
|
|
// swap_buffers)
|
|
start_frame(sw, &p->queued_fbo);
|
|
}
|
|
|
|
static const struct ra_swapchain_fns vulkan_swapchain = {
|
|
.color_depth = color_depth,
|
|
.start_frame = start_frame,
|
|
.submit_frame = submit_frame,
|
|
.swap_buffers = swap_buffers,
|
|
};
|