diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 60 |
1 files changed, 34 insertions, 26 deletions
@@ -5,6 +5,8 @@ #include <stdbool.h> #include <string.h> +#define MAX_FRAMES_INFLIGHT 2 + static SDL_Window *window = NULL; static VkDebugUtilsMessengerEXT debug_messenger; static VkInstance instance = VK_NULL_HANDLE; @@ -19,11 +21,12 @@ static VkExtent2D swapchain_extent; static VkRenderPass render_pass; static VkPipelineLayout pipeline_layout; static VkCommandPool command_pool; -static VkCommandBuffer command_buffer; +static VkCommandBuffer command_buffers[MAX_FRAMES_INFLIGHT]; static VkPipeline graphics_pipeline; -static VkSemaphore image_avail; -static VkSemaphore render_finished; -static VkFence in_flight_fence; +static VkSemaphore image_avail[MAX_FRAMES_INFLIGHT]; +static VkSemaphore render_finished[MAX_FRAMES_INFLIGHT]; +static VkFence in_flight_fence[MAX_FRAMES_INFLIGHT]; +static uint32_t current_frame = 0; static struct { size_t len; VkImage data[]; @@ -129,9 +132,11 @@ bool found_queue_indx(struct queue_indices inds) { void cleanup() { vkDeviceWaitIdle(gpu); - vkDestroySemaphore(gpu, image_avail, NULL); - vkDestroySemaphore(gpu, render_finished, NULL); - vkDestroyFence(gpu, in_flight_fence, NULL); + for (size_t i = 0; i < MAX_FRAMES_INFLIGHT; i++) { + vkDestroySemaphore(gpu, image_avail[i], NULL); + vkDestroySemaphore(gpu, render_finished[i], NULL); + vkDestroyFence(gpu, in_flight_fence[i], NULL); + } vkDestroyCommandPool(gpu, command_pool, NULL); for (size_t i = 0; i < swapchain_buffers->len; i++) { vkDestroyFramebuffer(gpu, swapchain_buffers->data[i], NULL); @@ -685,15 +690,15 @@ void create_command_pool() { } } -void create_command_buffer() { +void create_command_buffers() { VkCommandBufferAllocateInfo alloc_info = { .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO, .commandPool = command_pool, .level = VK_COMMAND_BUFFER_LEVEL_PRIMARY, - .commandBufferCount = 1 + .commandBufferCount = MAX_FRAMES_INFLIGHT }; - VkResult res = vkAllocateCommandBuffers(gpu, &alloc_info, &command_buffer); + VkResult res = vkAllocateCommandBuffers(gpu, &alloc_info, command_buffers); if (res != VK_SUCCESS) { fputs("failed to allocate command buffer", stderr); exit(-1); @@ -762,12 +767,13 @@ void create_sync_objects() { .sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, .flags = VK_FENCE_CREATE_SIGNALED_BIT }; - if (vkCreateSemaphore(gpu, &semaphore_info, NULL, &image_avail) != VK_SUCCESS - || vkCreateSemaphore(gpu, &semaphore_info, NULL, &render_finished) != VK_SUCCESS - || vkCreateFence(gpu, &fence_info, NULL, &in_flight_fence) != VK_SUCCESS) { - fputs("failed to create semaphores and fence", stderr); - exit(-1); - } + for (size_t i = 0; i < MAX_FRAMES_INFLIGHT; i++) + if (vkCreateSemaphore(gpu, &semaphore_info, NULL, &image_avail[i]) != VK_SUCCESS + || vkCreateSemaphore(gpu, &semaphore_info, NULL, &render_finished[i]) != VK_SUCCESS + || vkCreateFence(gpu, &fence_info, NULL, &in_flight_fence[i]) != VK_SUCCESS) { + fputs("failed to create semaphores and fence", stderr); + exit(-1); + } } void init() { @@ -806,21 +812,21 @@ void init() { create_graphics_pipeline(); create_framebuffers(); create_command_pool(); - create_command_buffer(); + create_command_buffers(); create_sync_objects(); } void draw() { - vkWaitForFences(gpu, 1, &in_flight_fence, VK_TRUE, UINT64_MAX); - vkResetFences(gpu, 1, &in_flight_fence); + vkWaitForFences(gpu, 1, &in_flight_fence[current_frame], VK_TRUE, UINT64_MAX); + vkResetFences(gpu, 1, &in_flight_fence[current_frame]); uint32_t image_index; - vkAcquireNextImageKHR(gpu, swapchain, UINT64_MAX, image_avail, VK_NULL_HANDLE, &image_index); - vkResetCommandBuffer(command_buffer, 0); - record_command_buffer(command_buffer, image_index); + vkAcquireNextImageKHR(gpu, swapchain, UINT64_MAX, image_avail[current_frame], VK_NULL_HANDLE, &image_index); + vkResetCommandBuffer(command_buffers[current_frame], 0); + record_command_buffer(command_buffers[current_frame], image_index); - VkSemaphore wait_semaphores[] = { image_avail }; - VkSemaphore signal_semaphores[] = { render_finished }; + VkSemaphore wait_semaphores[] = { image_avail[current_frame] }; + VkSemaphore signal_semaphores[] = { render_finished[current_frame] }; VkPipelineStageFlags wait_stages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT }; VkSubmitInfo submit_info = { .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO, @@ -830,10 +836,10 @@ void draw() { .signalSemaphoreCount = 1, .pSignalSemaphores = signal_semaphores, .commandBufferCount = 1, - .pCommandBuffers = &command_buffer + .pCommandBuffers = &command_buffers[current_frame] }; - VkResult res = vkQueueSubmit(gfx_queue, 1, &submit_info, in_flight_fence); + VkResult res = vkQueueSubmit(gfx_queue, 1, &submit_info, in_flight_fence[current_frame]); if (res != VK_SUCCESS) { fputs("failed to submit draw command buffer", stderr); exit(-1); @@ -850,6 +856,8 @@ void draw() { }; vkQueuePresentKHR(present_queue, &present_info); + + current_frame = (current_frame + 1) % MAX_FRAMES_INFLIGHT; } int main() { |