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cube.c
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/*
* Copyright (c) 2015-2016 The Khronos Group Inc.
* Copyright (c) 2015-2016 Valve Corporation
* Copyright (c) 2015-2016 LunarG, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author: Chia-I Wu <[email protected]>
* Author: Courtney Goeltzenleuchter <[email protected]>
* Author: Ian Elliott <[email protected]>
* Author: Ian Elliott <[email protected]>
* Author: Jon Ashburn <[email protected]>
* Author: Gwan-gyeong Mun <[email protected]>
* Author: Tony Barbour <[email protected]>
* Author: Bill Hollings <[email protected]>
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#include <signal.h>
#if defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR)
#include <X11/Xutil.h>
#elif defined(VK_USE_PLATFORM_WAYLAND_KHR)
#include <linux/input.h>
#endif
#ifdef _WIN32
#pragma comment(linker, "/subsystem:windows")
#define APP_NAME_STR_LEN 80
#endif // _WIN32
#if defined(VK_USE_PLATFORM_MIR_KHR)
#warning "Cube does not have code for Mir at this time"
#endif
#ifdef ANDROID
#include "vulkan_wrapper.h"
#else
#include <vulkan/vulkan.h>
#endif
#include <vulkan/vk_sdk_platform.h>
#include "linmath.h"
#include "gettime.h"
#include "inttypes.h"
#define MILLION 1000000L
#define BILLION 1000000000L
#define DEMO_TEXTURE_COUNT 1
#define APP_SHORT_NAME "cube"
#define APP_LONG_NAME "The Vulkan Cube Demo Program"
// Allow a maximum of two outstanding presentation operations.
#define FRAME_LAG 2
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#if defined(NDEBUG) && defined(__GNUC__)
#define U_ASSERT_ONLY __attribute__((unused))
#else
#define U_ASSERT_ONLY
#endif
#if defined(__GNUC__)
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
#ifdef _WIN32
bool in_callback = false;
#define ERR_EXIT(err_msg, err_class) \
do { \
if (!demo->suppress_popups) MessageBox(NULL, err_msg, err_class, MB_OK); \
exit(1); \
} while (0)
void DbgMsg(char *fmt, ...) {
va_list va;
va_start(va, fmt);
printf(fmt, va);
fflush(stdout);
va_end(va);
}
#elif defined __ANDROID__
#include <android/log.h>
#define ERR_EXIT(err_msg, err_class) \
do { \
((void)__android_log_print(ANDROID_LOG_INFO, "Cube", err_msg)); \
exit(1); \
} while (0)
#ifdef VARARGS_WORKS_ON_ANDROID
void DbgMsg(const char *fmt, ...) {
va_list va;
va_start(va, fmt);
__android_log_print(ANDROID_LOG_INFO, "Cube", fmt, va);
va_end(va);
}
#else // VARARGS_WORKS_ON_ANDROID
#define DbgMsg(fmt, ...) \
do { \
((void)__android_log_print(ANDROID_LOG_INFO, "Cube", fmt, ##__VA_ARGS__)); \
} while (0)
#endif // VARARGS_WORKS_ON_ANDROID
#else
#define ERR_EXIT(err_msg, err_class) \
do { \
printf("%s\n", err_msg); \
fflush(stdout); \
exit(1); \
} while (0)
void DbgMsg(char *fmt, ...) {
va_list va;
va_start(va, fmt);
printf(fmt, va);
fflush(stdout);
va_end(va);
}
#endif
#define GET_INSTANCE_PROC_ADDR(inst, entrypoint) \
{ \
demo->fp##entrypoint = (PFN_vk##entrypoint)vkGetInstanceProcAddr(inst, "vk" #entrypoint); \
if (demo->fp##entrypoint == NULL) { \
ERR_EXIT("vkGetInstanceProcAddr failed to find vk" #entrypoint, "vkGetInstanceProcAddr Failure"); \
} \
}
static PFN_vkGetDeviceProcAddr g_gdpa = NULL;
#define GET_DEVICE_PROC_ADDR(dev, entrypoint) \
{ \
if (!g_gdpa) g_gdpa = (PFN_vkGetDeviceProcAddr)vkGetInstanceProcAddr(demo->inst, "vkGetDeviceProcAddr"); \
demo->fp##entrypoint = (PFN_vk##entrypoint)g_gdpa(dev, "vk" #entrypoint); \
if (demo->fp##entrypoint == NULL) { \
ERR_EXIT("vkGetDeviceProcAddr failed to find vk" #entrypoint, "vkGetDeviceProcAddr Failure"); \
} \
}
/*
* structure to track all objects related to a texture.
*/
struct texture_object {
VkSampler sampler;
VkImage image;
VkImageLayout imageLayout;
VkMemoryAllocateInfo mem_alloc;
VkDeviceMemory mem;
VkImageView view;
int32_t tex_width, tex_height;
};
static char *tex_files[] = {"lunarg.ppm"};
static int validation_error = 0;
struct vktexcube_vs_uniform {
// Must start with MVP
float mvp[4][4];
float position[12 * 3][4];
float attr[12 * 3][4];
};
//--------------------------------------------------------------------------------------
// Mesh and VertexFormat Data
//--------------------------------------------------------------------------------------
// clang-format off
static const float g_vertex_buffer_data[] = {
-1.0f,-1.0f,-1.0f, // -X side
-1.0f,-1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f,-1.0f,
-1.0f,-1.0f,-1.0f,
-1.0f,-1.0f,-1.0f, // -Z side
1.0f, 1.0f,-1.0f,
1.0f,-1.0f,-1.0f,
-1.0f,-1.0f,-1.0f,
-1.0f, 1.0f,-1.0f,
1.0f, 1.0f,-1.0f,
-1.0f,-1.0f,-1.0f, // -Y side
1.0f,-1.0f,-1.0f,
1.0f,-1.0f, 1.0f,
-1.0f,-1.0f,-1.0f,
1.0f,-1.0f, 1.0f,
-1.0f,-1.0f, 1.0f,
-1.0f, 1.0f,-1.0f, // +Y side
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f,-1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f,-1.0f,
1.0f, 1.0f,-1.0f, // +X side
1.0f, 1.0f, 1.0f,
1.0f,-1.0f, 1.0f,
1.0f,-1.0f, 1.0f,
1.0f,-1.0f,-1.0f,
1.0f, 1.0f,-1.0f,
-1.0f, 1.0f, 1.0f, // +Z side
-1.0f,-1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f,-1.0f, 1.0f,
1.0f,-1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
};
static const float g_uv_buffer_data[] = {
0.0f, 1.0f, // -X side
1.0f, 1.0f,
1.0f, 0.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f, // -Z side
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
1.0f, 0.0f, // -Y side
1.0f, 1.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f,
1.0f, 0.0f, // +Y side
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f, // +X side
0.0f, 0.0f,
0.0f, 1.0f,
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f, // +Z side
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f,
};
// clang-format on
void dumpMatrix(const char *note, mat4x4 MVP) {
int i;
printf("%s: \n", note);
for (i = 0; i < 4; i++) {
printf("%f, %f, %f, %f\n", MVP[i][0], MVP[i][1], MVP[i][2], MVP[i][3]);
}
printf("\n");
fflush(stdout);
}
void dumpVec4(const char *note, vec4 vector) {
printf("%s: \n", note);
printf("%f, %f, %f, %f\n", vector[0], vector[1], vector[2], vector[3]);
printf("\n");
fflush(stdout);
}
VKAPI_ATTR VkBool32 VKAPI_CALL BreakCallback(VkFlags msgFlags, VkDebugReportObjectTypeEXT objType, uint64_t srcObject,
size_t location, int32_t msgCode, const char *pLayerPrefix, const char *pMsg,
void *pUserData) {
#ifndef WIN32
raise(SIGTRAP);
#else
DebugBreak();
#endif
return false;
}
typedef struct {
VkImage image;
VkCommandBuffer cmd;
VkCommandBuffer graphics_to_present_cmd;
VkImageView view;
VkBuffer uniform_buffer;
VkDeviceMemory uniform_memory;
VkFramebuffer framebuffer;
VkDescriptorSet descriptor_set;
} SwapchainImageResources;
struct demo {
#if defined(VK_USE_PLATFORM_WIN32_KHR)
#define APP_NAME_STR_LEN 80
HINSTANCE connection; // hInstance - Windows Instance
char name[APP_NAME_STR_LEN]; // Name to put on the window/icon
HWND window; // hWnd - window handle
POINT minsize; // minimum window size
#elif defined(VK_USE_PLATFORM_XLIB_KHR)
Display *display;
Window xlib_window;
Atom xlib_wm_delete_window;
#elif defined(VK_USE_PLATFORM_XCB_KHR)
Display *display;
xcb_connection_t *connection;
xcb_screen_t *screen;
xcb_window_t xcb_window;
xcb_intern_atom_reply_t *atom_wm_delete_window;
#elif defined(VK_USE_PLATFORM_WAYLAND_KHR)
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct wl_surface *window;
struct wl_shell *shell;
struct wl_shell_surface *shell_surface;
struct wl_seat *seat;
struct wl_pointer *pointer;
struct wl_keyboard *keyboard;
#elif defined(VK_USE_PLATFORM_MIR_KHR)
#elif defined(VK_USE_PLATFORM_ANDROID_KHR)
ANativeWindow *window;
#elif (defined(VK_USE_PLATFORM_IOS_MVK) || defined(VK_USE_PLATFORM_MACOS_MVK))
void *window;
#endif
VkSurfaceKHR surface;
bool prepared;
bool use_staging_buffer;
bool separate_present_queue;
bool VK_KHR_incremental_present_enabled;
bool VK_GOOGLE_display_timing_enabled;
bool syncd_with_actual_presents;
uint64_t refresh_duration;
uint64_t refresh_duration_multiplier;
uint64_t target_IPD; // image present duration (inverse of frame rate)
uint64_t prev_desired_present_time;
uint32_t next_present_id;
uint32_t last_early_id; // 0 if no early images
uint32_t last_late_id; // 0 if no late images
VkInstance inst;
VkPhysicalDevice gpu;
VkDevice device;
VkQueue graphics_queue;
VkQueue present_queue;
uint32_t graphics_queue_family_index;
uint32_t present_queue_family_index;
VkSemaphore image_acquired_semaphores[FRAME_LAG];
VkSemaphore draw_complete_semaphores[FRAME_LAG];
VkSemaphore image_ownership_semaphores[FRAME_LAG];
VkPhysicalDeviceProperties gpu_props;
VkQueueFamilyProperties *queue_props;
VkPhysicalDeviceMemoryProperties memory_properties;
uint32_t enabled_extension_count;
uint32_t enabled_layer_count;
char *extension_names[64];
char *enabled_layers[64];
int width, height;
VkFormat format;
VkColorSpaceKHR color_space;
PFN_vkGetPhysicalDeviceSurfaceSupportKHR fpGetPhysicalDeviceSurfaceSupportKHR;
PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR fpGetPhysicalDeviceSurfaceCapabilitiesKHR;
PFN_vkGetPhysicalDeviceSurfaceFormatsKHR fpGetPhysicalDeviceSurfaceFormatsKHR;
PFN_vkGetPhysicalDeviceSurfacePresentModesKHR fpGetPhysicalDeviceSurfacePresentModesKHR;
PFN_vkCreateSwapchainKHR fpCreateSwapchainKHR;
PFN_vkDestroySwapchainKHR fpDestroySwapchainKHR;
PFN_vkGetSwapchainImagesKHR fpGetSwapchainImagesKHR;
PFN_vkAcquireNextImageKHR fpAcquireNextImageKHR;
PFN_vkQueuePresentKHR fpQueuePresentKHR;
PFN_vkGetRefreshCycleDurationGOOGLE fpGetRefreshCycleDurationGOOGLE;
PFN_vkGetPastPresentationTimingGOOGLE fpGetPastPresentationTimingGOOGLE;
uint32_t swapchainImageCount;
VkSwapchainKHR swapchain;
SwapchainImageResources *swapchain_image_resources;
VkPresentModeKHR presentMode;
VkFence fences[FRAME_LAG];
int frame_index;
VkCommandPool cmd_pool;
VkCommandPool present_cmd_pool;
struct {
VkFormat format;
VkImage image;
VkMemoryAllocateInfo mem_alloc;
VkDeviceMemory mem;
VkImageView view;
} depth;
struct texture_object textures[DEMO_TEXTURE_COUNT];
struct texture_object staging_texture;
VkCommandBuffer cmd; // Buffer for initialization commands
VkPipelineLayout pipeline_layout;
VkDescriptorSetLayout desc_layout;
VkPipelineCache pipelineCache;
VkRenderPass render_pass;
VkPipeline pipeline;
mat4x4 projection_matrix;
mat4x4 view_matrix;
mat4x4 model_matrix;
float spin_angle;
float spin_increment;
bool pause;
VkShaderModule vert_shader_module;
VkShaderModule frag_shader_module;
VkDescriptorPool desc_pool;
bool quit;
int32_t curFrame;
int32_t frameCount;
bool validate;
bool validate_checks_disabled;
bool use_break;
bool suppress_popups;
PFN_vkCreateDebugReportCallbackEXT CreateDebugReportCallback;
PFN_vkDestroyDebugReportCallbackEXT DestroyDebugReportCallback;
VkDebugReportCallbackEXT msg_callback;
PFN_vkDebugReportMessageEXT DebugReportMessage;
uint32_t current_buffer;
uint32_t queue_family_count;
};
VKAPI_ATTR VkBool32 VKAPI_CALL dbgFunc(VkFlags msgFlags, VkDebugReportObjectTypeEXT objType, uint64_t srcObject, size_t location,
int32_t msgCode, const char *pLayerPrefix, const char *pMsg, void *pUserData) {
// clang-format off
char *message = (char *)malloc(strlen(pMsg) + 100);
assert(message);
if (msgFlags & VK_DEBUG_REPORT_INFORMATION_BIT_EXT) {
sprintf(message, "INFORMATION: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
} else if (msgFlags & VK_DEBUG_REPORT_WARNING_BIT_EXT) {
sprintf(message, "WARNING: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
} else if (msgFlags & VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT) {
sprintf(message, "PERFORMANCE WARNING: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
} else if (msgFlags & VK_DEBUG_REPORT_ERROR_BIT_EXT) {
sprintf(message, "ERROR: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
} else if (msgFlags & VK_DEBUG_REPORT_DEBUG_BIT_EXT) {
sprintf(message, "DEBUG: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
} else {
sprintf(message, "INFORMATION: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
validation_error = 1;
}
#ifdef _WIN32
in_callback = true;
struct demo *demo = (struct demo*) pUserData;
if (!demo->suppress_popups)
MessageBox(NULL, message, "Alert", MB_OK);
in_callback = false;
#elif defined(ANDROID)
if (msgFlags & VK_DEBUG_REPORT_INFORMATION_BIT_EXT) {
__android_log_print(ANDROID_LOG_INFO, APP_SHORT_NAME, "%s", message);
} else if (msgFlags & VK_DEBUG_REPORT_WARNING_BIT_EXT) {
__android_log_print(ANDROID_LOG_WARN, APP_SHORT_NAME, "%s", message);
} else if (msgFlags & VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT) {
__android_log_print(ANDROID_LOG_WARN, APP_SHORT_NAME, "%s", message);
} else if (msgFlags & VK_DEBUG_REPORT_ERROR_BIT_EXT) {
__android_log_print(ANDROID_LOG_ERROR, APP_SHORT_NAME, "%s", message);
} else if (msgFlags & VK_DEBUG_REPORT_DEBUG_BIT_EXT) {
__android_log_print(ANDROID_LOG_DEBUG, APP_SHORT_NAME, "%s", message);
} else {
__android_log_print(ANDROID_LOG_INFO, APP_SHORT_NAME, "%s", message);
}
#else
printf("%s\n", message);
fflush(stdout);
#endif
free(message);
// clang-format on
/*
* false indicates that layer should not bail-out of an
* API call that had validation failures. This may mean that the
* app dies inside the driver due to invalid parameter(s).
* That's what would happen without validation layers, so we'll
* keep that behavior here.
*/
return false;
}
bool ActualTimeLate(uint64_t desired, uint64_t actual, uint64_t rdur) {
// The desired time was the earliest time that the present should have
// occured. In almost every case, the actual time should be later than the
// desired time. We should only consider the actual time "late" if it is
// after "desired + rdur".
if (actual <= desired) {
// The actual time was before or equal to the desired time. This will
// probably never happen, but in case it does, return false since the
// present was obviously NOT late.
return false;
}
uint64_t deadline = actual + rdur;
if (actual > deadline) {
return true;
} else {
return false;
}
}
bool CanPresentEarlier(uint64_t earliest,
uint64_t actual,
uint64_t margin,
uint64_t rdur) {
if (earliest < actual) {
// Consider whether this present could have occured earlier. Make sure
// that earliest time was at least 2msec earlier than actual time, and
// that the margin was at least 2msec:
uint64_t diff = actual - earliest;
if ((diff >= (2 * MILLION)) && (margin >= (2 * MILLION))) {
// This present could have occured earlier because both: 1) the
// earliest time was at least 2 msec before actual time, and 2) the
// margin was at least 2msec.
return true;
}
}
return false;
}
// Forward declaration:
static void demo_resize(struct demo *demo);
static bool memory_type_from_properties(struct demo *demo, uint32_t typeBits,
VkFlags requirements_mask,
uint32_t *typeIndex) {
// Search memtypes to find first index with those properties
for (uint32_t i = 0; i < VK_MAX_MEMORY_TYPES; i++) {
if ((typeBits & 1) == 1) {
// Type is available, does it match user properties?
if ((demo->memory_properties.memoryTypes[i].propertyFlags &
requirements_mask) == requirements_mask) {
*typeIndex = i;
return true;
}
}
typeBits >>= 1;
}
// No memory types matched, return failure
return false;
}
static void demo_flush_init_cmd(struct demo *demo) {
VkResult U_ASSERT_ONLY err;
// This function could get called twice if the texture uses a staging buffer
// In that case the second call should be ignored
if (demo->cmd == VK_NULL_HANDLE)
return;
err = vkEndCommandBuffer(demo->cmd);
assert(!err);
VkFence fence;
VkFenceCreateInfo fence_ci = {.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO,
.pNext = NULL,
.flags = 0};
err = vkCreateFence(demo->device, &fence_ci, NULL, &fence);
assert(!err);
const VkCommandBuffer cmd_bufs[] = {demo->cmd};
VkSubmitInfo submit_info = {.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = NULL,
.waitSemaphoreCount = 0,
.pWaitSemaphores = NULL,
.pWaitDstStageMask = NULL,
.commandBufferCount = 1,
.pCommandBuffers = cmd_bufs,
.signalSemaphoreCount = 0,
.pSignalSemaphores = NULL};
err = vkQueueSubmit(demo->graphics_queue, 1, &submit_info, fence);
assert(!err);
err = vkWaitForFences(demo->device, 1, &fence, VK_TRUE, UINT64_MAX);
assert(!err);
vkFreeCommandBuffers(demo->device, demo->cmd_pool, 1, cmd_bufs);
vkDestroyFence(demo->device, fence, NULL);
demo->cmd = VK_NULL_HANDLE;
}
static void demo_set_image_layout(struct demo *demo, VkImage image,
VkImageAspectFlags aspectMask,
VkImageLayout old_image_layout,
VkImageLayout new_image_layout,
VkAccessFlagBits srcAccessMask,
VkPipelineStageFlags src_stages,
VkPipelineStageFlags dest_stages) {
assert(demo->cmd);
VkImageMemoryBarrier image_memory_barrier = {
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = NULL,
.srcAccessMask = srcAccessMask,
.dstAccessMask = 0,
.oldLayout = old_image_layout,
.newLayout = new_image_layout,
.image = image,
.subresourceRange = {aspectMask, 0, 1, 0, 1}};
switch (new_image_layout) {
case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
/* Make sure anything that was copying from this image has completed */
image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
break;
case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
image_memory_barrier.dstAccessMask =
VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
break;
case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
image_memory_barrier.dstAccessMask =
VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
break;
case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
image_memory_barrier.dstAccessMask =
VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_INPUT_ATTACHMENT_READ_BIT;
break;
case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
break;
case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR:
image_memory_barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
break;
default:
image_memory_barrier.dstAccessMask = 0;
break;
}
VkImageMemoryBarrier *pmemory_barrier = &image_memory_barrier;
vkCmdPipelineBarrier(demo->cmd, src_stages, dest_stages, 0, 0, NULL, 0,
NULL, 1, pmemory_barrier);
}
static void demo_draw_build_cmd(struct demo *demo, VkCommandBuffer cmd_buf) {
const VkCommandBufferBeginInfo cmd_buf_info = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
.pNext = NULL,
.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
.pInheritanceInfo = NULL,
};
const VkClearValue clear_values[2] = {
[0] = {.color.float32 = {0.2f, 0.2f, 0.2f, 0.2f}},
[1] = {.depthStencil = {1.0f, 0}},
};
const VkRenderPassBeginInfo rp_begin = {
.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO,
.pNext = NULL,
.renderPass = demo->render_pass,
.framebuffer = demo->swapchain_image_resources[demo->current_buffer].framebuffer,
.renderArea.offset.x = 0,
.renderArea.offset.y = 0,
.renderArea.extent.width = demo->width,
.renderArea.extent.height = demo->height,
.clearValueCount = 2,
.pClearValues = clear_values,
};
VkResult U_ASSERT_ONLY err;
err = vkBeginCommandBuffer(cmd_buf, &cmd_buf_info);
assert(!err);
vkCmdBeginRenderPass(cmd_buf, &rp_begin, VK_SUBPASS_CONTENTS_INLINE);
vkCmdBindPipeline(cmd_buf, VK_PIPELINE_BIND_POINT_GRAPHICS, demo->pipeline);
vkCmdBindDescriptorSets(cmd_buf, VK_PIPELINE_BIND_POINT_GRAPHICS,
demo->pipeline_layout, 0, 1,
&demo->swapchain_image_resources[demo->current_buffer].descriptor_set,
0, NULL);
VkViewport viewport;
memset(&viewport, 0, sizeof(viewport));
viewport.height = (float)demo->height;
viewport.width = (float)demo->width;
viewport.minDepth = (float)0.0f;
viewport.maxDepth = (float)1.0f;
vkCmdSetViewport(cmd_buf, 0, 1, &viewport);
VkRect2D scissor;
memset(&scissor, 0, sizeof(scissor));
scissor.extent.width = demo->width;
scissor.extent.height = demo->height;
scissor.offset.x = 0;
scissor.offset.y = 0;
vkCmdSetScissor(cmd_buf, 0, 1, &scissor);
vkCmdDraw(cmd_buf, 12 * 3, 1, 0, 0);
// Note that ending the renderpass changes the image's layout from
// COLOR_ATTACHMENT_OPTIMAL to PRESENT_SRC_KHR
vkCmdEndRenderPass(cmd_buf);
if (demo->separate_present_queue) {
// We have to transfer ownership from the graphics queue family to the
// present queue family to be able to present. Note that we don't have
// to transfer from present queue family back to graphics queue family at
// the start of the next frame because we don't care about the image's
// contents at that point.
VkImageMemoryBarrier image_ownership_barrier = {
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = NULL,
.srcAccessMask = 0,
.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT,
.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.srcQueueFamilyIndex = demo->graphics_queue_family_index,
.dstQueueFamilyIndex = demo->present_queue_family_index,
.image = demo->swapchain_image_resources[demo->current_buffer].image,
.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}};
vkCmdPipelineBarrier(cmd_buf,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0,
0, NULL, 0, NULL, 1, &image_ownership_barrier);
}
err = vkEndCommandBuffer(cmd_buf);
assert(!err);
}
void demo_build_image_ownership_cmd(struct demo *demo, int i) {
VkResult U_ASSERT_ONLY err;
const VkCommandBufferBeginInfo cmd_buf_info = {
.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
.pNext = NULL,
.flags = VK_COMMAND_BUFFER_USAGE_SIMULTANEOUS_USE_BIT,
.pInheritanceInfo = NULL,
};
err = vkBeginCommandBuffer(demo->swapchain_image_resources[i].graphics_to_present_cmd,
&cmd_buf_info);
assert(!err);
VkImageMemoryBarrier image_ownership_barrier = {
.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
.pNext = NULL,
.srcAccessMask = 0,
.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT,
.oldLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR,
.srcQueueFamilyIndex = demo->graphics_queue_family_index,
.dstQueueFamilyIndex = demo->present_queue_family_index,
.image = demo->swapchain_image_resources[i].image,
.subresourceRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}};
vkCmdPipelineBarrier(demo->swapchain_image_resources[i].graphics_to_present_cmd,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, 0, 0,
NULL, 0, NULL, 1, &image_ownership_barrier);
err = vkEndCommandBuffer(demo->swapchain_image_resources[i].graphics_to_present_cmd);
assert(!err);
}
void demo_update_data_buffer(struct demo *demo) {
mat4x4 MVP, Model, VP;
int matrixSize = sizeof(MVP);
uint8_t *pData;
VkResult U_ASSERT_ONLY err;
mat4x4_mul(VP, demo->projection_matrix, demo->view_matrix);
// Rotate around the Y axis
mat4x4_dup(Model, demo->model_matrix);
mat4x4_rotate(demo->model_matrix, Model, 0.0f, 1.0f, 0.0f,
(float)degreesToRadians(demo->spin_angle));
mat4x4_mul(MVP, VP, demo->model_matrix);
err = vkMapMemory(demo->device,
demo->swapchain_image_resources[demo->current_buffer].uniform_memory, 0,
VK_WHOLE_SIZE, 0, (void **)&pData);
assert(!err);
memcpy(pData, (const void *)&MVP[0][0], matrixSize);
vkUnmapMemory(demo->device, demo->swapchain_image_resources[demo->current_buffer].uniform_memory);
}
void DemoUpdateTargetIPD(struct demo *demo) {
// Look at what happened to previous presents, and make appropriate
// adjustments in timing:
VkResult U_ASSERT_ONLY err;
VkPastPresentationTimingGOOGLE* past = NULL;
uint32_t count = 0;
err = demo->fpGetPastPresentationTimingGOOGLE(demo->device,
demo->swapchain,
&count,
NULL);
assert(!err);
if (count) {
past = (VkPastPresentationTimingGOOGLE*) malloc(sizeof(VkPastPresentationTimingGOOGLE) * count);
assert(past);
err = demo->fpGetPastPresentationTimingGOOGLE(demo->device,
demo->swapchain,
&count,
past);
assert(!err);
bool early = false;
bool late = false;
bool calibrate_next = false;
for (uint32_t i = 0 ; i < count ; i++) {
if (!demo->syncd_with_actual_presents) {
// This is the first time that we've received an
// actualPresentTime for this swapchain. In order to not
// perceive these early frames as "late", we need to sync-up
// our future desiredPresentTime's with the
// actualPresentTime(s) that we're receiving now.
calibrate_next = true;
// So that we don't suspect any pending presents as late,
// record them all as suspected-late presents:
demo->last_late_id = demo->next_present_id - 1;
demo->last_early_id = 0;
demo->syncd_with_actual_presents = true;
break;
} else if (CanPresentEarlier(past[i].earliestPresentTime,
past[i].actualPresentTime,
past[i].presentMargin,
demo->refresh_duration)) {
// This image could have been presented earlier. We don't want
// to decrease the target_IPD until we've seen early presents
// for at least two seconds.
if (demo->last_early_id == past[i].presentID) {
// We've now seen two seconds worth of early presents.
// Flag it as such, and reset the counter:
early = true;
demo->last_early_id = 0;
} else if (demo->last_early_id == 0) {
// This is the first early present we've seen.
// Calculate the presentID for two seconds from now.
uint64_t lastEarlyTime =
past[i].actualPresentTime + (2 * BILLION);
uint32_t howManyPresents =
(uint32_t)((lastEarlyTime - past[i].actualPresentTime) / demo->target_IPD);
demo->last_early_id = past[i].presentID + howManyPresents;
} else {
// We are in the midst of a set of early images,
// and so we won't do anything.
}
late = false;
demo->last_late_id = 0;
} else if (ActualTimeLate(past[i].desiredPresentTime,
past[i].actualPresentTime,
demo->refresh_duration)) {
// This image was presented after its desired time. Since
// there's a delay between calling vkQueuePresentKHR and when
// we get the timing data, several presents may have been late.
// Thus, we need to threat all of the outstanding presents as
// being likely late, so that we only increase the target_IPD
// once for all of those presents.
if ((demo->last_late_id == 0) ||
(demo->last_late_id < past[i].presentID)) {
late = true;
// Record the last suspected-late present:
demo->last_late_id = demo->next_present_id - 1;
} else {
// We are in the midst of a set of likely-late images,
// and so we won't do anything.
}
early = false;
demo->last_early_id = 0;
} else {
// Since this image was not presented early or late, reset
// any sets of early or late presentIDs:
early = false;
late = false;
calibrate_next = true;
demo->last_early_id = 0;
demo->last_late_id = 0;
}
}
if (early) {
// Since we've seen at least two-seconds worth of presnts that
// could have occured earlier than desired, let's decrease the
// target_IPD (i.e. increase the frame rate):
//
// TODO(ianelliott): Try to calculate a better target_IPD based
// on the most recently-seen present (this is overly-simplistic).
demo->refresh_duration_multiplier--;
if (demo->refresh_duration_multiplier == 0) {
// This should never happen, but in case it does, don't
// try to go faster.
demo->refresh_duration_multiplier = 1;
}
demo->target_IPD =
demo->refresh_duration * demo->refresh_duration_multiplier;
}
if (late) {
// Since we found a new instance of a late present, we want to
// increase the target_IPD (i.e. decrease the frame rate):
//
// TODO(ianelliott): Try to calculate a better target_IPD based
// on the most recently-seen present (this is overly-simplistic).
demo->refresh_duration_multiplier++;
demo->target_IPD =
demo->refresh_duration * demo->refresh_duration_multiplier;
}
if (calibrate_next) {
int64_t multiple = demo->next_present_id - past[count-1].presentID;
demo->prev_desired_present_time =
(past[count-1].actualPresentTime +
(multiple * demo->target_IPD));
}
}
}
static void demo_draw(struct demo *demo) {
VkResult U_ASSERT_ONLY err;
// Ensure no more than FRAME_LAG renderings are outstanding
vkWaitForFences(demo->device, 1, &demo->fences[demo->frame_index], VK_TRUE, UINT64_MAX);
vkResetFences(demo->device, 1, &demo->fences[demo->frame_index]);
do {
// Get the index of the next available swapchain image:
err = demo->fpAcquireNextImageKHR(demo->device, demo->swapchain, UINT64_MAX,
demo->image_acquired_semaphores[demo->frame_index],
VK_NULL_HANDLE, &demo->current_buffer);
if (err == VK_ERROR_OUT_OF_DATE_KHR) {
// demo->swapchain is out of date (e.g. the window was resized) and
// must be recreated:
demo_resize(demo);
} else if (err == VK_SUBOPTIMAL_KHR) {
// demo->swapchain is not as optimal as it could be, but the platform's
// presentation engine will still present the image correctly.
break;
} else {
assert(!err);
}
} while (err != VK_SUCCESS);
demo_update_data_buffer(demo);
if (demo->VK_GOOGLE_display_timing_enabled) {
// Look at what happened to previous presents, and make appropriate
// adjustments in timing:
DemoUpdateTargetIPD(demo);
// Note: a real application would position its geometry to that it's in
// the correct locatoin for when the next image is presented. It might
// also wait, so that there's less latency between any input and when
// the next image is rendered/presented. This demo program is so
// simple that it doesn't do either of those.
}
// Wait for the image acquired semaphore to be signaled to ensure
// that the image won't be rendered to until the presentation
// engine has fully released ownership to the application, and it is