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Diffstat (limited to 'demos/cube.cpp')
| -rw-r--r-- | demos/cube.cpp | 2887 |
1 files changed, 2887 insertions, 0 deletions
diff --git a/demos/cube.cpp b/demos/cube.cpp new file mode 100644 index 000000000..a0c7c4775 --- /dev/null +++ b/demos/cube.cpp @@ -0,0 +1,2887 @@ +/* +* 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: Jeremy Hayes <jeremy@lunarg.com> +*/ + +#if defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) +#include <X11/Xutil.h> +#endif + +#include <cassert> +#include <cstdio> +#include <cstdlib> +#include <cstring> +#include <csignal> +#include <memory> + +#define VULKAN_HPP_NO_EXCEPTIONS +#include <vulkan/vulkan.hpp> +#include <vulkan/vk_sdk_platform.h> + +#include "linmath.h" + +#ifndef NDEBUG +#define VERIFY(x) assert(x) +#else +#define VERIFY(x) ((void)(x)) +#endif + +#define APP_SHORT_NAME "cube" +#ifdef _WIN32 +#define APP_NAME_STR_LEN 80 +#endif + +// Allow a maximum of two outstanding presentation operations. +#define FRAME_LAG 2 + +#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) + +#ifdef _WIN32 +#define ERR_EXIT(err_msg, err_class) \ + do { \ + if (!suppress_popups) \ + MessageBox(nullptr, err_msg, err_class, MB_OK); \ + exit(1); \ + } while (0) +#else +#define ERR_EXIT(err_msg, err_class) \ + do { \ + printf(err_msg); \ + fflush(stdout); \ + exit(1); \ + } while (0) +#endif + +struct texture_object { + vk::Sampler sampler; + + vk::Image image; + vk::ImageLayout imageLayout; + + vk::MemoryAllocateInfo mem_alloc; + vk::DeviceMemory mem; + vk::ImageView view; + + int32_t tex_width; + int32_t tex_height; +}; + +static char const *const tex_files[] = {"lunarg.ppm"}; + +static int validation_error = 0; + +struct vkcube_vs_uniform { + // Must start with MVP + float mvp[4][4]; + float position[12 * 3][4]; + float color[12 * 3][4]; +}; + +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 + +typedef struct { + vk::Image image; + vk::CommandBuffer cmd; + vk::CommandBuffer graphics_to_present_cmd; + vk::ImageView view; +} SwapchainBuffers; + +#ifdef _WIN32 +// MS-Windows event handling function: +LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam); +#endif + +struct Demo { + Demo() + : +#if defined(VK_USE_PLATFORM_WIN32_KHR) + connection{nullptr}, + window{nullptr}, + minsize(POINT{ + 0, 0}), // Use explicit construction to avoid MSVC error C2797. +#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) + display{nullptr}, + xlib_window{0}, xlib_wm_delete_window{0}, connection{nullptr}, + screen{nullptr}, xcb_window{0}, atom_wm_delete_window{nullptr}, +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + display{nullptr}, + registry{nullptr}, compositor{nullptr}, window{nullptr}, + shell{nullptr}, shell_surface{nullptr}, +#endif + prepared{false}, + use_staging_buffer{false}, use_xlib{false}, + graphics_queue_family_index{0}, present_queue_family_index{0}, + enabled_extension_count{0}, enabled_layer_count{0}, width{0}, + height{0}, swapchainImageCount{0}, frame_index{0}, spin_angle{0.0f}, + spin_increment{0.0f}, pause{false}, quit{false}, curFrame{0}, + frameCount{0}, validate{false}, use_break{false}, + suppress_popups{false}, current_buffer{0}, queue_family_count{0} { +#if defined(VK_USE_PLATFORM_WIN32_KHR) + memset(name, '\0', APP_NAME_STR_LEN); +#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) +#endif + memset(fencesInited, 0, sizeof(bool) * FRAME_LAG); + memset(projection_matrix, 0, sizeof(projection_matrix)); + memset(view_matrix, 0, sizeof(view_matrix)); + memset(model_matrix, 0, sizeof(model_matrix)); + } + + void build_image_ownership_cmd(uint32_t const &i) { + auto const cmd_buf_info = vk::CommandBufferBeginInfo().setFlags( + vk::CommandBufferUsageFlagBits::eSimultaneousUse); + auto result = buffers[i].graphics_to_present_cmd.begin(&cmd_buf_info); + VERIFY(result == vk::Result::eSuccess); + + auto const image_ownership_barrier = + vk::ImageMemoryBarrier() + .setSrcAccessMask(vk::AccessFlags()) + .setDstAccessMask(vk::AccessFlagBits::eColorAttachmentWrite) + .setOldLayout(vk::ImageLayout::ePresentSrcKHR) + .setNewLayout(vk::ImageLayout::ePresentSrcKHR) + .setSrcQueueFamilyIndex(graphics_queue_family_index) + .setDstQueueFamilyIndex(present_queue_family_index) + .setImage(buffers[i].image) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1)); + + buffers[i].graphics_to_present_cmd.pipelineBarrier( + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::DependencyFlagBits(), 0, nullptr, 0, nullptr, 1, + &image_ownership_barrier); + + result = buffers[i].graphics_to_present_cmd.end(); + VERIFY(result == vk::Result::eSuccess); + } + + vk::Bool32 check_layers(uint32_t check_count, + char const *const *const check_names, + uint32_t layer_count, vk::LayerProperties *layers) { + for (uint32_t i = 0; i < check_count; i++) { + vk::Bool32 found = VK_FALSE; + for (uint32_t j = 0; j < layer_count; j++) { + if (!strcmp(check_names[i], layers[j].layerName)) { + found = VK_TRUE; + break; + } + } + if (!found) { + fprintf(stderr, "Cannot find layer: %s\n", check_names[i]); + return 0; + } + } + return VK_TRUE; + } + + void cleanup() { + prepared = false; + device.waitIdle(); + + // Wait for fences from present operations + for (uint32_t i = 0; i < FRAME_LAG; i++) { + if (fencesInited[i]) { + device.waitForFences(1, &fences[i], VK_TRUE, UINT64_MAX); + } + device.destroyFence(fences[i], nullptr); + device.destroySemaphore(image_acquired_semaphores[i], nullptr); + device.destroySemaphore(draw_complete_semaphores[i], nullptr); + if (separate_present_queue) { + device.destroySemaphore(image_ownership_semaphores[i], nullptr); + } + } + + for (uint32_t i = 0; i < swapchainImageCount; i++) { + device.destroyFramebuffer(framebuffers[i], nullptr); + } + device.destroyDescriptorPool(desc_pool, nullptr); + + device.destroyPipeline(pipeline, nullptr); + device.destroyPipelineCache(pipelineCache, nullptr); + device.destroyRenderPass(render_pass, nullptr); + device.destroyPipelineLayout(pipeline_layout, nullptr); + device.destroyDescriptorSetLayout(desc_layout, nullptr); + + for (uint32_t i = 0; i < texture_count; i++) { + device.destroyImageView(textures[i].view, nullptr); + device.destroyImage(textures[i].image, nullptr); + device.freeMemory(textures[i].mem, nullptr); + device.destroySampler(textures[i].sampler, nullptr); + } + device.destroySwapchainKHR(swapchain, nullptr); + + device.destroyImageView(depth.view, nullptr); + device.destroyImage(depth.image, nullptr); + device.freeMemory(depth.mem, nullptr); + + device.destroyBuffer(uniform_data.buf, nullptr); + device.freeMemory(uniform_data.mem, nullptr); + + for (uint32_t i = 0; i < swapchainImageCount; i++) { + device.destroyImageView(buffers[i].view, nullptr); + device.freeCommandBuffers(cmd_pool, 1, &buffers[i].cmd); + } + + device.destroyCommandPool(cmd_pool, nullptr); + + if (separate_present_queue) { + device.destroyCommandPool(present_cmd_pool, nullptr); + } + + device.destroy(nullptr); + inst.destroySurfaceKHR(surface, nullptr); + inst.destroy(nullptr); + +#if defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) + if (use_xlib) { + XDestroyWindow(display, xlib_window); + XCloseDisplay(display); + } else { + xcb_destroy_window(connection, xcb_window); + xcb_disconnect(connection); + } + free(atom_wm_delete_window); +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + wl_shell_surface_destroy(shell_surface); + wl_surface_destroy(window); + wl_shell_destroy(shell); + wl_compositor_destroy(compositor); + wl_registry_destroy(registry); + wl_display_disconnect(display); +#endif + } + + void create_device() { + float const priorities[1] = {0.0}; + + vk::DeviceQueueCreateInfo queues[2]; + queues[0].setQueueFamilyIndex(graphics_queue_family_index); + queues[0].setQueueCount(1); + queues[0].setPQueuePriorities(priorities); + + auto deviceInfo = vk::DeviceCreateInfo() + .setQueueCreateInfoCount(1) + .setPQueueCreateInfos(queues) + .setEnabledLayerCount(0) + .setPpEnabledLayerNames(nullptr) + .setEnabledExtensionCount(enabled_extension_count) + .setPpEnabledExtensionNames( + (const char *const *)extension_names) + .setPEnabledFeatures(nullptr); + + if (separate_present_queue) { + queues[1].setQueueFamilyIndex(present_queue_family_index); + queues[1].setQueueCount(1); + queues[1].setPQueuePriorities(priorities); + deviceInfo.setQueueCreateInfoCount(2); + } + + auto result = gpu.createDevice(&deviceInfo, nullptr, &device); + VERIFY(result == vk::Result::eSuccess); + } + + void destroy_texture_image(texture_object *tex_objs) { + // clean up staging resources + device.freeMemory(tex_objs->mem, nullptr); + device.destroyImage(tex_objs->image, nullptr); + } + + void draw() { + if (fencesInited[frame_index]) { + // Ensure no more than FRAME_LAG presentations are outstanding + device.waitForFences(1, &fences[frame_index], VK_TRUE, UINT64_MAX); + device.resetFences(1, &fences[frame_index]); + } + + // Get the index of the next available swapchain image: + auto result = device.acquireNextImageKHR( + swapchain, UINT64_MAX, image_acquired_semaphores[frame_index], + fences[frame_index], ¤t_buffer); + fencesInited[frame_index] = true; + if (result == vk::Result::eErrorOutOfDateKHR) { + // swapchain is out of date (e.g. the window was resized) and + // must be recreated: + frame_index += 1; + frame_index %= FRAME_LAG; + + resize(); + draw(); + return; + } else if (result == vk::Result::eSuboptimalKHR) { + // swapchain is not as optimal as it could be, but the platform's + // presentation engine will still present the image correctly. + } else { + VERIFY(result == vk::Result::eSuccess); + } + + // 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 + // okay to render to the image. + vk::PipelineStageFlags const pipe_stage_flags = + vk::PipelineStageFlagBits::eColorAttachmentOutput; + auto const submit_info = + vk::SubmitInfo() + .setPWaitDstStageMask(&pipe_stage_flags) + .setWaitSemaphoreCount(1) + .setPWaitSemaphores(&image_acquired_semaphores[frame_index]) + .setCommandBufferCount(1) + .setPCommandBuffers(&buffers[current_buffer].cmd) + .setSignalSemaphoreCount(1) + .setPSignalSemaphores(&draw_complete_semaphores[frame_index]); + + result = graphics_queue.submit(1, &submit_info, vk::Fence()); + VERIFY(result == vk::Result::eSuccess); + + if (separate_present_queue) { + // If we are using separate queues, change image ownership to the + // present queue before presenting, waiting for the draw complete + // semaphore and signalling the ownership released semaphore when + // finished + auto const submit_info = + vk::SubmitInfo() + .setPWaitDstStageMask(&pipe_stage_flags) + .setWaitSemaphoreCount(1) + .setPWaitSemaphores(&draw_complete_semaphores[frame_index]) + .setCommandBufferCount(1) + .setPCommandBuffers( + &buffers[current_buffer].graphics_to_present_cmd) + .setSignalSemaphoreCount(1) + .setPSignalSemaphores( + &image_ownership_semaphores[frame_index]); + + result = present_queue.submit(1, &submit_info, vk::Fence()); + VERIFY(result == vk::Result::eSuccess); + } + + // If we are using separate queues we have to wait for image ownership, + // otherwise wait for draw complete + auto const presentInfo = + vk::PresentInfoKHR() + .setWaitSemaphoreCount(1) + .setPWaitSemaphores( + separate_present_queue + ? &image_ownership_semaphores[frame_index] + : &draw_complete_semaphores[frame_index]) + .setSwapchainCount(1) + .setPSwapchains(&swapchain) + .setPImageIndices(¤t_buffer); + + result = present_queue.presentKHR(&presentInfo); + frame_index += 1; + frame_index %= FRAME_LAG; + if (result == vk::Result::eErrorOutOfDateKHR) { + // swapchain is out of date (e.g. the window was resized) and + // must be recreated: + resize(); + } else if (result == vk::Result::eSuboptimalKHR) { + // swapchain is not as optimal as it could be, but the platform's + // presentation engine will still present the image correctly. + } else { + VERIFY(result == vk::Result::eSuccess); + } + } + + void draw_build_cmd(vk::CommandBuffer commandBuffer) { + auto const commandInfo = vk::CommandBufferBeginInfo().setFlags( + vk::CommandBufferUsageFlagBits::eSimultaneousUse); + + vk::ClearValue const clearValues[2] = { + vk::ClearColorValue(std::array<float, 4>({0.2f, 0.2f, 0.2f, 0.2f})), + vk::ClearDepthStencilValue(1.0f, 0u)}; + + auto const passInfo = + vk::RenderPassBeginInfo() + .setRenderPass(render_pass) + .setFramebuffer(framebuffers[current_buffer]) + .setRenderArea( + vk::Rect2D(vk::Offset2D(0, 0), + vk::Extent2D((uint32_t)width, (uint32_t)height))) + .setClearValueCount(2) + .setPClearValues(clearValues); + + auto result = commandBuffer.begin(&commandInfo); + VERIFY(result == vk::Result::eSuccess); + + auto const image_memory_barrier = + vk::ImageMemoryBarrier() + .setSrcAccessMask(vk::AccessFlagBits::eMemoryRead) + .setDstAccessMask(vk::AccessFlagBits::eColorAttachmentWrite) + .setOldLayout(vk::ImageLayout::ePresentSrcKHR) + .setNewLayout(vk::ImageLayout::eColorAttachmentOptimal) + .setSrcQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED) + .setDstQueueFamilyIndex(VK_QUEUE_FAMILY_IGNORED) + .setImage(buffers[current_buffer].image) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1)); + + commandBuffer.pipelineBarrier( + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::DependencyFlagBits(), 0, nullptr, 0, nullptr, 1, + &image_memory_barrier); + + commandBuffer.beginRenderPass(&passInfo, vk::SubpassContents::eInline); + + commandBuffer.bindPipeline(vk::PipelineBindPoint::eGraphics, pipeline); + commandBuffer.bindDescriptorSets(vk::PipelineBindPoint::eGraphics, + pipeline_layout, 0, 1, &desc_set, 0, + nullptr); + + auto const viewport = vk::Viewport() + .setWidth((float)width) + .setHeight((float)height) + .setMinDepth((float)0.0f) + .setMaxDepth((float)1.0f); + commandBuffer.setViewport(0, 1, &viewport); + + vk::Rect2D const scissor(vk::Offset2D(0, 0), + vk::Extent2D(width, height)); + commandBuffer.setScissor(0, 1, &scissor); + commandBuffer.draw(12 * 3, 1, 0, 0); + // Note that ending the renderpass changes the image's layout from + // COLOR_ATTACHMENT_OPTIMAL to PRESENT_SRC_KHR + commandBuffer.endRenderPass(); + + if (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. + auto const image_ownership_barrier = + vk::ImageMemoryBarrier() + .setSrcAccessMask(vk::AccessFlags()) + .setDstAccessMask(vk::AccessFlagBits::eColorAttachmentWrite) + .setOldLayout(vk::ImageLayout::ePresentSrcKHR) + .setNewLayout(vk::ImageLayout::ePresentSrcKHR) + .setSrcQueueFamilyIndex(graphics_queue_family_index) + .setDstQueueFamilyIndex(present_queue_family_index) + .setImage(buffers[current_buffer].image) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1)); + + commandBuffer.pipelineBarrier( + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::PipelineStageFlagBits::eColorAttachmentOutput, + vk::DependencyFlagBits(), 0, nullptr, 0, nullptr, 1, + &image_ownership_barrier); + } + + result = commandBuffer.end(); + VERIFY(result == vk::Result::eSuccess); + } + + void flush_init_cmd() { + // TODO: hmm. + // This function could get called twice if the texture uses a staging + // buffer + // In that case the second call should be ignored + if (!cmd) { + return; + } + + auto result = cmd.end(); + VERIFY(result == vk::Result::eSuccess); + + auto const fenceInfo = + vk::FenceCreateInfo().setFlags(vk::FenceCreateFlagBits(0)); + vk::Fence fence; + device.createFence(&fenceInfo, nullptr, &fence); + + vk::CommandBuffer const commandBuffers[] = {cmd}; + auto const submitInfo = + vk::SubmitInfo().setCommandBufferCount(1).setPCommandBuffers( + commandBuffers); + + result = graphics_queue.submit(1, &submitInfo, fence); + VERIFY(result == vk::Result::eSuccess); + + result = device.waitForFences(1, &fence, VK_TRUE, UINT64_MAX); + VERIFY(result == vk::Result::eSuccess); + + device.freeCommandBuffers(cmd_pool, 1, commandBuffers); + device.destroyFence(fence, nullptr); + + cmd = vk::CommandBuffer(); + } + + void init(int argc, char **argv) { + vec3 eye = {0.0f, 3.0f, 5.0f}; + vec3 origin = {0, 0, 0}; + vec3 up = {0.0f, 1.0f, 0.0}; + + frameCount = UINT32_MAX; + use_xlib = false; + + for (int i = 1; i < argc; i++) { + if (strcmp(argv[i], "--use_staging") == 0) { + use_staging_buffer = true; + continue; + } + if (strcmp(argv[i], "--break") == 0) { + use_break = true; + continue; + } + if (strcmp(argv[i], "--validate") == 0) { + validate = true; + continue; + } +#if defined(VK_USE_PLATFORM_XLIB_KHR) + if (strcmp(argv[i], "--xlib") == 0) { + use_xlib = true; + continue; + } +#endif + if (strcmp(argv[i], "--c") == 0 && frameCount == UINT32_MAX && + i < argc - 1 && sscanf(argv[i + 1], "%d", &frameCount) == 1) { + i++; + continue; + } + if (strcmp(argv[i], "--suppress_popups") == 0) { + suppress_popups = true; + continue; + } + + fprintf(stderr, + "Usage:\n %s [--use_staging] [--validate] [--break] " +#if defined(VK_USE_PLATFORM_XLIB_KHR) + "[--xlib] " +#endif + "[--c <framecount>] [--suppress_popups]\n", + APP_SHORT_NAME); + fflush(stderr); + exit(1); + } + + if (!use_xlib) { + init_connection(); + } + + init_vk(); + + width = 500; + height = 500; + + spin_angle = 4.0f; + spin_increment = 0.2f; + pause = false; + + mat4x4_perspective(projection_matrix, (float)degreesToRadians(45.0f), + 1.0f, 0.1f, 100.0f); + mat4x4_look_at(view_matrix, eye, origin, up); + mat4x4_identity(model_matrix); + + projection_matrix[1][1] *= + -1; // Flip projection matrix from GL to Vulkan orientation. + } + + void init_connection() { +#if defined(VK_USE_PLATFORM_XCB_KHR) + const xcb_setup_t *setup; + xcb_screen_iterator_t iter; + int scr; + + connection = xcb_connect(nullptr, &scr); + if (xcb_connection_has_error(connection) > 0) { + printf("Cannot find a compatible Vulkan installable client driver " + "(ICD).\nExiting ...\n"); + fflush(stdout); + exit(1); + } + + setup = xcb_get_setup(connection); + iter = xcb_setup_roots_iterator(setup); + while (scr-- > 0) + xcb_screen_next(&iter); + + screen = iter.data; +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + display = wl_display_connect(nullptr); + + if (display == nullptr) { + printf("Cannot find a compatible Vulkan installable client driver " + "(ICD).\nExiting ...\n"); + fflush(stdout); + exit(1); + } + + registry = wl_display_get_registry(display); + wl_registry_add_listener(registry, ®istry_listener, this); + wl_display_dispatch(display); +#endif + } + + void init_vk() { + uint32_t instance_extension_count = 0; + uint32_t instance_layer_count = 0; + uint32_t validation_layer_count = 0; + char const *const *instance_validation_layers = nullptr; + enabled_extension_count = 0; + enabled_layer_count = 0; + + char const *const instance_validation_layers_alt1[] = { + "VK_LAYER_LUNARG_standard_validation"}; + + char const *const instance_validation_layers_alt2[] = { + "VK_LAYER_GOOGLE_threading", + "VK_LAYER_LUNARG_parameter_validation", + "VK_LAYER_LUNARG_object_tracker", + "VK_LAYER_LUNARG_image", + "VK_LAYER_LUNARG_core_validation", + "VK_LAYER_LUNARG_swapchain", + "VK_LAYER_GOOGLE_unique_objects"}; + + // Look for validation layers + vk::Bool32 validation_found = VK_FALSE; + if (validate) { + auto result = vk::enumerateInstanceLayerProperties( + &instance_layer_count, nullptr); + VERIFY(result == vk::Result::eSuccess); + + instance_validation_layers = instance_validation_layers_alt1; + if (instance_layer_count > 0) { + std::unique_ptr<vk::LayerProperties[]> instance_layers( + new vk::LayerProperties[instance_layer_count]); + result = vk::enumerateInstanceLayerProperties( + &instance_layer_count, instance_layers.get()); + VERIFY(result == vk::Result::eSuccess); + + validation_found = + check_layers(ARRAY_SIZE(instance_validation_layers_alt1), + instance_validation_layers, + instance_layer_count, instance_layers.get()); + if (validation_found) { + enabled_layer_count = + ARRAY_SIZE(instance_validation_layers_alt1); + enabled_layers[0] = "VK_LAYER_LUNARG_standard_validation"; + validation_layer_count = 1; + } else { + // use alternative set of validation layers + instance_validation_layers = + instance_validation_layers_alt2; + enabled_layer_count = + ARRAY_SIZE(instance_validation_layers_alt2); + validation_found = check_layers( + ARRAY_SIZE(instance_validation_layers_alt2), + instance_validation_layers, instance_layer_count, + instance_layers.get()); + validation_layer_count = + ARRAY_SIZE(instance_validation_layers_alt2); + for (uint32_t i = 0; i < validation_layer_count; i++) { + enabled_layers[i] = instance_validation_layers[i]; + } + } + } + + if (!validation_found) { + ERR_EXIT("vkEnumerateInstanceLayerProperties failed to find " + "required validation layer.\n\n" + "Please look at the Getting Started guide for " + "additional information.\n", + "vkCreateInstance Failure"); + } + } + + /* Look for instance extensions */ + vk::Bool32 surfaceExtFound = VK_FALSE; + vk::Bool32 platformSurfaceExtFound = VK_FALSE; +#if defined(VK_USE_PLATFORM_XLIB_KHR) + vk::Bool32 xlibSurfaceExtFound = VK_FALSE; +#endif + memset(extension_names, 0, sizeof(extension_names)); + + auto result = vk::enumerateInstanceExtensionProperties( + nullptr, &instance_extension_count, nullptr); + VERIFY(result == vk::Result::eSuccess); + + if (instance_extension_count > 0) { + std::unique_ptr<vk::ExtensionProperties[]> instance_extensions( + new vk::ExtensionProperties[instance_extension_count]); + result = vk::enumerateInstanceExtensionProperties( + nullptr, &instance_extension_count, instance_extensions.get()); + VERIFY(result == vk::Result::eSuccess); + + for (uint32_t i = 0; i < instance_extension_count; i++) { + if (!strcmp(VK_KHR_SURFACE_EXTENSION_NAME, + instance_extensions[i].extensionName)) { + surfaceExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_SURFACE_EXTENSION_NAME; + } +#if defined(VK_USE_PLATFORM_WIN32_KHR) + if (!strcmp(VK_KHR_WIN32_SURFACE_EXTENSION_NAME, + instance_extensions[i].extensionName)) { + platformSurfaceExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_WIN32_SURFACE_EXTENSION_NAME; + } +#endif +#if defined(VK_USE_PLATFORM_XLIB_KHR) + if (!strcmp(VK_KHR_XLIB_SURFACE_EXTENSION_NAME, + instance_extensions[i].extensionName)) { + platformSurfaceExtFound = 1; + xlibSurfaceExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_XLIB_SURFACE_EXTENSION_NAME; + } +#endif +#if defined(VK_USE_PLATFORM_XCB_KHR) + if (!strcmp(VK_KHR_XCB_SURFACE_EXTENSION_NAME, + instance_extensions[i].extensionName)) { + platformSurfaceExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_XCB_SURFACE_EXTENSION_NAME; + } +#endif +#if defined(VK_USE_PLATFORM_WAYLAND_KHR) + if (!strcmp(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME, + instance_extensions[i].extensionName)) { + platformSurfaceExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME; + } +#endif + assert(enabled_extension_count < 64); + } + } + + if (!surfaceExtFound) { + ERR_EXIT("vkEnumerateInstanceExtensionProperties failed to find " + "the " VK_KHR_SURFACE_EXTENSION_NAME " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); + } + + if (!platformSurfaceExtFound) { +#if defined(VK_USE_PLATFORM_WIN32_KHR) + ERR_EXIT("vkEnumerateInstanceExtensionProperties failed to find " + "the " VK_KHR_WIN32_SURFACE_EXTENSION_NAME + " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); +#elif defined(VK_USE_PLATFORM_XCB_KHR) + ERR_EXIT("vkEnumerateInstanceExtensionProperties failed to find " + "the " VK_KHR_XCB_SURFACE_EXTENSION_NAME " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + ERR_EXIT("vkEnumerateInstanceExtensionProperties failed to find " + "the " VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME + " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); +#endif + } + +#if defined(VK_USE_PLATFORM_XLIB_KHR) + if (use_xlib && !xlibSurfaceExtFound) { + ERR_EXIT("vkEnumerateInstanceExtensionProperties failed to find " + "the " VK_KHR_XLIB_SURFACE_EXTENSION_NAME " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); + } +#endif + + auto const app = vk::ApplicationInfo() + .setPApplicationName(APP_SHORT_NAME) + .setApplicationVersion(0) + .setPEngineName(APP_SHORT_NAME) + .setEngineVersion(0) + .setApiVersion(VK_API_VERSION_1_0); + auto const inst_info = + vk::InstanceCreateInfo() + .setPApplicationInfo(&app) + .setEnabledLayerCount(enabled_layer_count) + .setPpEnabledLayerNames(instance_validation_layers) + .setEnabledExtensionCount(enabled_extension_count) + .setPpEnabledExtensionNames(extension_names); + + result = vk::createInstance(&inst_info, nullptr, &inst); + if (result == vk::Result::eErrorIncompatibleDriver) { + ERR_EXIT("Cannot find a compatible Vulkan installable client " + "driver (ICD).\n\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); + } else if (result == vk::Result::eErrorExtensionNotPresent) { + ERR_EXIT("Cannot find a specified extension library.\n" + "Make sure your layers path is set appropriately.\n", + "vkCreateInstance Failure"); + } else if (result != vk::Result::eSuccess) { + ERR_EXIT("vkCreateInstance failed.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); + } + + /* Make initial call to query gpu_count, then second call for gpu info*/ + uint32_t gpu_count; + result = inst.enumeratePhysicalDevices(&gpu_count, nullptr); + VERIFY(result == vk::Result::eSuccess); + assert(gpu_count > 0); + + if (gpu_count > 0) { + std::unique_ptr<vk::PhysicalDevice[]> physical_devices( + new vk::PhysicalDevice[gpu_count]); + result = inst.enumeratePhysicalDevices(&gpu_count, + physical_devices.get()); + VERIFY(result == vk::Result::eSuccess); + /* For cube demo we just grab the first physical device */ + gpu = physical_devices[0]; + } else { + ERR_EXIT("vkEnumeratePhysicalDevices reported zero accessible " + "devices.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkEnumeratePhysicalDevices Failure"); + } + + /* Look for device extensions */ + uint32_t device_extension_count = 0; + vk::Bool32 swapchainExtFound = VK_FALSE; + enabled_extension_count = 0; + memset(extension_names, 0, sizeof(extension_names)); + + result = gpu.enumerateDeviceExtensionProperties( + nullptr, &device_extension_count, nullptr); + VERIFY(result == vk::Result::eSuccess); + + if (device_extension_count > 0) { + std::unique_ptr<vk::ExtensionProperties[]> device_extensions( + new vk::ExtensionProperties[device_extension_count]); + result = gpu.enumerateDeviceExtensionProperties( + nullptr, &device_extension_count, device_extensions.get()); + VERIFY(result == vk::Result::eSuccess); + + for (uint32_t i = 0; i < device_extension_count; i++) { + if (!strcmp(VK_KHR_SWAPCHAIN_EXTENSION_NAME, + device_extensions[i].extensionName)) { + swapchainExtFound = 1; + extension_names[enabled_extension_count++] = + VK_KHR_SWAPCHAIN_EXTENSION_NAME; + } + assert(enabled_extension_count < 64); + } + } + + if (!swapchainExtFound) { + ERR_EXIT("vkEnumerateDeviceExtensionProperties failed to find " + "the " VK_KHR_SWAPCHAIN_EXTENSION_NAME " extension.\n\n" + "Do you have a compatible Vulkan installable client " + "driver (ICD) installed?\n" + "Please look at the Getting Started guide for additional " + "information.\n", + "vkCreateInstance Failure"); + } + + gpu.getProperties(&gpu_props); + + /* Call with nullptr data to get count */ + gpu.getQueueFamilyProperties(&queue_family_count, nullptr); + assert(queue_family_count >= 1); + + queue_props.reset(new vk::QueueFamilyProperties[queue_family_count]); + gpu.getQueueFamilyProperties(&queue_family_count, queue_props.get()); + + // Query fine-grained feature support for this device. + // If app has specific feature requirements it should check supported + // features based on this query + vk::PhysicalDeviceFeatures physDevFeatures; + gpu.getFeatures(&physDevFeatures); + } + + void init_vk_swapchain() { +// Create a WSI surface for the window: +#if defined(VK_USE_PLATFORM_WIN32_KHR) + { + auto const createInfo = vk::Win32SurfaceCreateInfoKHR() + .setHinstance(connection) + .setHwnd(window); + + auto result = + inst.createWin32SurfaceKHR(&createInfo, nullptr, &surface); + VERIFY(result == vk::Result::eSuccess); + } +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) && !defined(VK_USE_PLATFORM_XCB_KHR) + { + auto const createInfo = vk::WaylandSurfaceCreateInfoKHR() + .setDisplay(display) + .setSurface(window); + + auto result = + inst.createWaylandSurfaceKHR(&createInfo, nullptr, &surface); + VERIFY(result == vk::Result::eSuccess); + } +#endif + if (use_xlib) { +#if defined(VK_USE_PLATFORM_XLIB_KHR) + auto const createInfo = + vk::XlibSurfaceCreateInfoKHR().setDpy(display).setWindow( + xlib_window); + + auto result = + inst.createXlibSurfaceKHR(&createInfo, nullptr, &surface); + VERIFY(result == vk::Result::eSuccess); +#endif + } else { +#if defined(VK_USE_PLATFORM_XCB_KHR) + auto const createInfo = vk::XcbSurfaceCreateInfoKHR() + .setConnection(connection) + .setWindow(xcb_window); + + auto result = + inst.createXcbSurfaceKHR(&createInfo, nullptr, &surface); + VERIFY(result == vk::Result::eSuccess); +#endif + } + + // Iterate over each queue to learn whether it supports presenting: + std::unique_ptr<vk::Bool32[]> supportsPresent( + new vk::Bool32[queue_family_count]); + for (uint32_t i = 0; i < queue_family_count; i++) { + gpu.getSurfaceSupportKHR(i, surface, &supportsPresent[i]); + } + + uint32_t graphicsQueueFamilyIndex = UINT32_MAX; + uint32_t presentQueueFamilyIndex = UINT32_MAX; + for (uint32_t i = 0; i < queue_family_count; i++) { + if (queue_props[i].queueFlags & vk::QueueFlagBits::eGraphics) { + if (graphicsQueueFamilyIndex == UINT32_MAX) { + graphicsQueueFamilyIndex = i; + } + + if (supportsPresent[i] == VK_TRUE) { + graphicsQueueFamilyIndex = i; + presentQueueFamilyIndex = i; + break; + } + } + } + + if (presentQueueFamilyIndex == UINT32_MAX) { + // If didn't find a queue that supports both graphics and present, + // then + // find a separate present queue. + for (uint32_t i = 0; i < queue_family_count; ++i) { + if (supportsPresent[i] == VK_TRUE) { + presentQueueFamilyIndex = i; + break; + } + } + } + + // Generate error if could not find both a graphics and a present queue + if (graphicsQueueFamilyIndex == UINT32_MAX || + presentQueueFamilyIndex == UINT32_MAX) { + ERR_EXIT("Could not find both graphics and present queues\n", + "Swapchain Initialization Failure"); + } + + graphics_queue_family_index = graphicsQueueFamilyIndex; + present_queue_family_index = presentQueueFamilyIndex; + separate_present_queue = + (graphics_queue_family_index != present_queue_family_index); + + create_device(); + + device.getQueue(graphics_queue_family_index, 0, &graphics_queue); + if (!separate_present_queue) { + present_queue = graphics_queue; + } else { + device.getQueue(present_queue_family_index, 0, &present_queue); + } + + // Get the list of VkFormat's that are supported: + uint32_t formatCount; + auto result = gpu.getSurfaceFormatsKHR(surface, &formatCount, nullptr); + VERIFY(result == vk::Result::eSuccess); + + std::unique_ptr<vk::SurfaceFormatKHR[]> surfFormats( + new vk::SurfaceFormatKHR[formatCount]); + result = + gpu.getSurfaceFormatsKHR(surface, &formatCount, surfFormats.get()); + VERIFY(result == vk::Result::eSuccess); + + // If the format list includes just one entry of VK_FORMAT_UNDEFINED, + // the surface has no preferred format. Otherwise, at least one + // supported format will be returned. + if (formatCount == 1 && + surfFormats[0].format == vk::Format::eUndefined) { + format = vk::Format::eB8G8R8A8Unorm; + } else { + assert(formatCount >= 1); + format = surfFormats[0].format; + } + color_space = surfFormats[0].colorSpace; + + quit = false; + curFrame = 0; + + // Create semaphores to synchronize acquiring presentable buffers before + // rendering and waiting for drawing to be complete before presenting + auto const semaphoreCreateInfo = vk::SemaphoreCreateInfo(); + + // Create fences that we can use to throttle if we get too far + // ahead of the image presents + vk::FenceCreateInfo const fence_ci; + for (uint32_t i = 0; i < FRAME_LAG; i++) { + device.createFence(&fence_ci, nullptr, &fences[i]); + fencesInited[i] = false; + result = device.createSemaphore(&semaphoreCreateInfo, nullptr, + &image_acquired_semaphores[i]); + VERIFY(result == vk::Result::eSuccess); + + result = device.createSemaphore(&semaphoreCreateInfo, nullptr, + &draw_complete_semaphores[i]); + VERIFY(result == vk::Result::eSuccess); + + if (separate_present_queue) { + result = device.createSemaphore(&semaphoreCreateInfo, nullptr, + &image_ownership_semaphores[i]); + VERIFY(result == vk::Result::eSuccess); + } + } + frame_index = 0; + + // Get Memory information and properties + gpu.getMemoryProperties(&memory_properties); + } + + void prepare() { + auto const cmd_pool_info = + vk::CommandPoolCreateInfo().setQueueFamilyIndex( + graphics_queue_family_index); + auto result = + device.createCommandPool(&cmd_pool_info, nullptr, &cmd_pool); + VERIFY(result == vk::Result::eSuccess); + + auto const cmd = vk::CommandBufferAllocateInfo() + .setCommandPool(cmd_pool) + .setLevel(vk::CommandBufferLevel::ePrimary) + .setCommandBufferCount(1); + + prepare_buffers(); + prepare_depth(); + prepare_textures(); + prepare_cube_data_buffer(); + + prepare_descriptor_layout(); + prepare_render_pass(); + prepare_pipeline(); + + for (uint32_t i = 0; i < swapchainImageCount; ++i) { + result = device.allocateCommandBuffers(&cmd, &buffers[i].cmd); + VERIFY(result == vk::Result::eSuccess); + } + + if (separate_present_queue) { + auto const cmd_pool_info = + vk::CommandPoolCreateInfo().setQueueFamilyIndex( + present_queue_family_index); + + result = device.createCommandPool(&cmd_pool_info, nullptr, + &present_cmd_pool); + VERIFY(result == vk::Result::eSuccess); + + auto const cmd = vk::CommandBufferAllocateInfo() + .setCommandPool(present_cmd_pool) + .setLevel(vk::CommandBufferLevel::ePrimary) + .setCommandBufferCount(1); + + for (uint32_t i = 0; i < swapchainImageCount; i++) { + result = device.allocateCommandBuffers( + &cmd, &buffers[i].graphics_to_present_cmd); + VERIFY(result == vk::Result::eSuccess); + + build_image_ownership_cmd(i); + } + } + + prepare_descriptor_pool(); + prepare_descriptor_set(); + + prepare_framebuffers(); + + for (uint32_t i = 0; i < swapchainImageCount; ++i) { + current_buffer = i; + draw_build_cmd(buffers[i].cmd); + } + + /* + * Prepare functions above may generate pipeline commands + * that need to be flushed before beginning the render loop. + */ + flush_init_cmd(); + + current_buffer = 0; + prepared = true; + } + + void prepare_buffers() { + vk::SwapchainKHR oldSwapchain = swapchain; + + // Check the surface capabilities and formats + vk::SurfaceCapabilitiesKHR surfCapabilities; + auto result = gpu.getSurfaceCapabilitiesKHR(surface, &surfCapabilities); + VERIFY(result == vk::Result::eSuccess); + + uint32_t presentModeCount; + result = + gpu.getSurfacePresentModesKHR(surface, &presentModeCount, nullptr); + VERIFY(result == vk::Result::eSuccess); + + std::unique_ptr<vk::PresentModeKHR[]> presentModes( + new vk::PresentModeKHR[presentModeCount]); + result = gpu.getSurfacePresentModesKHR(surface, &presentModeCount, + presentModes.get()); + VERIFY(result == vk::Result::eSuccess); + + vk::Extent2D swapchainExtent; + // width and height are either both -1, or both not -1. + if (surfCapabilities.currentExtent.width == (uint32_t)-1) { + // If the surface size is undefined, the size is set to + // the size of the images requested. + swapchainExtent.width = width; + swapchainExtent.height = height; + } else { + // If the surface size is defined, the swap chain size must match + swapchainExtent = surfCapabilities.currentExtent; + width = surfCapabilities.currentExtent.width; + height = surfCapabilities.currentExtent.height; + } + + // The FIFO present mode is guaranteed by the spec to be supported + // and to have no tearing. It's a great default present mode to use. + vk::PresentModeKHR swapchainPresentMode = vk::PresentModeKHR::eFifo; + +// There are times when you may wish to use another present mode. The +// following code shows how to select them, and the comments provide some +// reasons you may wish to use them. +// +// It should be noted that Vulkan 1.0 doesn't provide a method for +// synchronizing rendering with the presentation engine's display. There +// is a method provided for throttling rendering with the display, but +// there are some presentation engines for which this method will not work. +// If an application doesn't throttle its rendering, and if it renders much +// faster than the refresh rate of the display, this can waste power on +// mobile devices. That is because power is being spent rendering images +// that may never be seen. +//#define DESIRE_VK_PRESENT_MODE_IMMEDIATE_KHR +//#define DESIRE_VK_PRESENT_MODE_MAILBOX_KHR +//#define DESIRE_VK_PRESENT_MODE_FIFO_RELAXED_KHR +#if defined(DESIRE_VK_PRESENT_MODE_IMMEDIATE_KHR) + // VK_PRESENT_MODE_IMMEDIATE_KHR is for applications that don't care + // about + // tearing, or have some way of synchronizing their rendering with the + // display. + for (size_t i = 0; i < presentModeCount; ++i) { + if (presentModes[i] == vk::PresentModeKHR::eImmediate) { + swapchainPresentMode = vk::PresentModeKHR::eImmediate; + break; + } + } +#elif defined(DESIRE_VK_PRESENT_MODE_MAILBOX_KHR) + // VK_PRESENT_MODE_MAILBOX_KHR may be useful for applications that + // generally render a new presentable image every refresh cycle, but are + // occasionally early. In this case, the application wants the new + // image + // to be displayed instead of the previously-queued-for-presentation + // image + // that has not yet been displayed. + for (size_t i = 0; i < presentModeCount; ++i) { + if (presentModes[i] == vk::PresentModeKHR::eMailbox) { + swapchainPresentMode = vk::PresentModeKHR::eMailbox; + break; + } + } +#elif defined(DESIRE_VK_PRESENT_MODE_FIFO_RELAXED_KHR) + // VK_PRESENT_MODE_FIFO_RELAXED_KHR is for applications that generally + // render a new presentable image every refresh cycle, but are + // occasionally + // late. In this case (perhaps because of stuttering/latency concerns), + // the application wants the late image to be immediately displayed, + // even + // though that may mean some tearing. + for (size_t i = 0; i < presentModeCount; ++i) { + if (presentModes[i] == vk::PresentModeKHR::eFifoRelaxed) { + swapchainPresentMode = vk::PresentModeKHR::eFifoRelaxed; + break; + } + } +#endif + + // Determine the number of VkImage's to use in the swap chain (we desire + // to + // own only 1 image at a time, besides the images being displayed and + // queued for display): + uint32_t desiredNumberOfSwapchainImages = + surfCapabilities.minImageCount + 1; + // If maxImageCount is 0, we can ask for as many images as we want, + // otherwise + // we're limited to maxImageCount + if ((surfCapabilities.maxImageCount > 0) && + (desiredNumberOfSwapchainImages > surfCapabilities.maxImageCount)) { + // Application must settle for fewer images than desired: + desiredNumberOfSwapchainImages = surfCapabilities.maxImageCount; + } + + vk::SurfaceTransformFlagBitsKHR preTransform; + if (surfCapabilities.supportedTransforms & + vk::SurfaceTransformFlagBitsKHR::eIdentity) { + preTransform = vk::SurfaceTransformFlagBitsKHR::eIdentity; + } else { + preTransform = surfCapabilities.currentTransform; + } + + auto const swapchain_ci = + vk::SwapchainCreateInfoKHR() + .setSurface(surface) + .setMinImageCount(desiredNumberOfSwapchainImages) + .setImageFormat(format) + .setImageColorSpace(color_space) + .setImageExtent({swapchainExtent.width, swapchainExtent.height}) + .setImageArrayLayers(1) + .setImageUsage(vk::ImageUsageFlagBits::eColorAttachment) + .setImageSharingMode(vk::SharingMode::eExclusive) + .setQueueFamilyIndexCount(0) + .setPQueueFamilyIndices(nullptr) + .setPreTransform(preTransform) + .setCompositeAlpha(vk::CompositeAlphaFlagBitsKHR::eOpaque) + .setPresentMode(swapchainPresentMode) + .setClipped(true) + .setOldSwapchain(oldSwapchain); + + result = device.createSwapchainKHR(&swapchain_ci, nullptr, &swapchain); + VERIFY(result == vk::Result::eSuccess); + + // If we just re-created an existing swapchain, we should destroy the + // old + // swapchain at this point. + // Note: destroying the swapchain also cleans up all its associated + // presentable images once the platform is done with them. + if (oldSwapchain) { + device.destroySwapchainKHR(oldSwapchain, nullptr); + } + + result = device.getSwapchainImagesKHR(swapchain, &swapchainImageCount, + nullptr); + VERIFY(result == vk::Result::eSuccess); + + std::unique_ptr<vk::Image[]> swapchainImages( + new vk::Image[swapchainImageCount]); + result = device.getSwapchainImagesKHR(swapchain, &swapchainImageCount, + swapchainImages.get()); + VERIFY(result == vk::Result::eSuccess); + + buffers.reset(new SwapchainBuffers[swapchainImageCount]); + + for (uint32_t i = 0; i < swapchainImageCount; ++i) { + auto const color_image_view = + vk::ImageViewCreateInfo() + .setImage(swapchainImages[i]) + .setViewType(vk::ImageViewType::e2D) + .setFormat(format) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1)); + + buffers[i].image = swapchainImages[i]; + + result = device.createImageView(&color_image_view, nullptr, + &buffers[i].view); + VERIFY(result == vk::Result::eSuccess); + + // The draw loop will be expecting the presentable images to be in + // LAYOUT_PRESENT_SRC_KHR since that's how they're left at the end + // of every frame. + set_image_layout(buffers[i].image, vk::ImageAspectFlagBits::eColor, + vk::ImageLayout::eUndefined, + vk::ImageLayout::ePresentSrcKHR, + vk::AccessFlagBits()); + } + } + + void prepare_cube_data_buffer() { + mat4x4 VP; + mat4x4_mul(VP, projection_matrix, view_matrix); + + mat4x4 MVP; + mat4x4_mul(MVP, VP, model_matrix); + + vktexcube_vs_uniform data; + memcpy(data.mvp, MVP, sizeof(MVP)); + // dumpMatrix("MVP", MVP) + for (int32_t i = 0; i < 12 * 3; i++) { + data.position[i][0] = g_vertex_buffer_data[i * 3]; + data.position[i][1] = g_vertex_buffer_data[i * 3 + 1]; + data.position[i][2] = g_vertex_buffer_data[i * 3 + 2]; + data.position[i][3] = 1.0f; + data.attr[i][0] = g_uv_buffer_data[2 * i]; + data.attr[i][1] = g_uv_buffer_data[2 * i + 1]; + data.attr[i][2] = 0; + data.attr[i][3] = 0; + } + + auto const buf_info = + vk::BufferCreateInfo() + .setSize(sizeof(data)) + .setUsage(vk::BufferUsageFlagBits::eUniformBuffer); + auto result = + device.createBuffer(&buf_info, nullptr, &uniform_data.buf); + VERIFY(result == vk::Result::eSuccess); + + vk::MemoryRequirements mem_reqs; + device.getBufferMemoryRequirements(uniform_data.buf, &mem_reqs); + + uniform_data.mem_alloc.setAllocationSize(mem_reqs.size); + uniform_data.mem_alloc.setMemoryTypeIndex(0); + + bool const pass = memory_type_from_properties( + mem_reqs.memoryTypeBits, + vk::MemoryPropertyFlagBits::eHostVisible | + vk::MemoryPropertyFlagBits::eHostCoherent, + &uniform_data.mem_alloc.memoryTypeIndex); + VERIFY(pass); + + result = device.allocateMemory(&uniform_data.mem_alloc, nullptr, + &(uniform_data.mem)); + VERIFY(result == vk::Result::eSuccess); + + auto pData = device.mapMemory(uniform_data.mem, 0, + uniform_data.mem_alloc.allocationSize, + vk::MemoryMapFlags()); + VERIFY(pData.result == vk::Result::eSuccess); + + memcpy(pData.value, &data, sizeof data); + + device.unmapMemory(uniform_data.mem); + + result = device.bindBufferMemory(uniform_data.buf, uniform_data.mem, 0); + VERIFY(result == vk::Result::eSuccess); + + uniform_data.buffer_info.buffer = uniform_data.buf; + uniform_data.buffer_info.offset = 0; + uniform_data.buffer_info.range = sizeof(data); + } + + void prepare_depth() { + depth.format = vk::Format::eD16Unorm; + + auto const image = + vk::ImageCreateInfo() + .setImageType(vk::ImageType::e2D) + .setFormat(depth.format) + .setExtent({(uint32_t)width, (uint32_t)height, 1}) + .setMipLevels(1) + .setArrayLayers(1) + .setSamples(vk::SampleCountFlagBits::e1) + .setTiling(vk::ImageTiling::eOptimal) + .setUsage(vk::ImageUsageFlagBits::eDepthStencilAttachment) + .setSharingMode(vk::SharingMode::eExclusive) + .setQueueFamilyIndexCount(0) + .setPQueueFamilyIndices(nullptr) + .setInitialLayout(vk::ImageLayout::eUndefined); + + auto result = device.createImage(&image, nullptr, &depth.image); + VERIFY(result == vk::Result::eSuccess); + + vk::MemoryRequirements mem_reqs; + device.getImageMemoryRequirements(depth.image, &mem_reqs); + + depth.mem_alloc.setAllocationSize(mem_reqs.size); + depth.mem_alloc.setMemoryTypeIndex(0); + + auto const pass = memory_type_from_properties( + mem_reqs.memoryTypeBits, vk::MemoryPropertyFlagBits(0), + &depth.mem_alloc.memoryTypeIndex); + VERIFY(pass); + + result = device.allocateMemory(&depth.mem_alloc, nullptr, &depth.mem); + VERIFY(result == vk::Result::eSuccess); + + result = device.bindImageMemory(depth.image, depth.mem, 0); + VERIFY(result == vk::Result::eSuccess); + + set_image_layout(depth.image, vk::ImageAspectFlagBits::eDepth, + vk::ImageLayout::eUndefined, + vk::ImageLayout::eDepthStencilAttachmentOptimal, + vk::AccessFlagBits()); + + auto const view = vk::ImageViewCreateInfo() + .setImage(depth.image) + .setViewType(vk::ImageViewType::e2D) + .setFormat(depth.format) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eDepth, 0, 1, 0, 1)); + result = device.createImageView(&view, nullptr, &depth.view); + VERIFY(result == vk::Result::eSuccess); + } + + void prepare_descriptor_layout() { + vk::DescriptorSetLayoutBinding const layout_bindings[2] = { + vk::DescriptorSetLayoutBinding() + .setBinding(0) + .setDescriptorType(vk::DescriptorType::eUniformBuffer) + .setDescriptorCount(1) + .setStageFlags(vk::ShaderStageFlagBits::eVertex) + .setPImmutableSamplers(nullptr), + vk::DescriptorSetLayoutBinding() + .setBinding(1) + .setDescriptorType(vk::DescriptorType::eCombinedImageSampler) + .setDescriptorCount(texture_count) + .setStageFlags(vk::ShaderStageFlagBits::eFragment) + .setPImmutableSamplers(nullptr)}; + + auto const descriptor_layout = + vk::DescriptorSetLayoutCreateInfo().setBindingCount(2).setPBindings( + layout_bindings); + + auto result = device.createDescriptorSetLayout(&descriptor_layout, + nullptr, &desc_layout); + VERIFY(result == vk::Result::eSuccess); + + auto const pPipelineLayoutCreateInfo = + vk::PipelineLayoutCreateInfo().setSetLayoutCount(1).setPSetLayouts( + &desc_layout); + + result = device.createPipelineLayout(&pPipelineLayoutCreateInfo, + nullptr, &pipeline_layout); + VERIFY(result == vk::Result::eSuccess); + } + + void prepare_descriptor_pool() { + vk::DescriptorPoolSize const poolSizes[2] = { + vk::DescriptorPoolSize() + .setType(vk::DescriptorType::eUniformBuffer) + .setDescriptorCount(1), + vk::DescriptorPoolSize() + .setType(vk::DescriptorType::eCombinedImageSampler) + .setDescriptorCount(texture_count)}; + + auto const descriptor_pool = vk::DescriptorPoolCreateInfo() + .setMaxSets(1) + .setPoolSizeCount(2) + .setPPoolSizes(poolSizes); + + auto result = + device.createDescriptorPool(&descriptor_pool, nullptr, &desc_pool); + VERIFY(result == vk::Result::eSuccess); + } + + void prepare_descriptor_set() { + auto const alloc_info = vk::DescriptorSetAllocateInfo() + .setDescriptorPool(desc_pool) + .setDescriptorSetCount(1) + .setPSetLayouts(&desc_layout); + auto result = device.allocateDescriptorSets(&alloc_info, &desc_set); + VERIFY(result == vk::Result::eSuccess); + + vk::DescriptorImageInfo tex_descs[texture_count]; + for (uint32_t i = 0; i < texture_count; i++) { + tex_descs[i].setSampler(textures[i].sampler); + tex_descs[i].setImageView(textures[i].view); + tex_descs[i].setImageLayout(vk::ImageLayout::eGeneral); + } + + vk::WriteDescriptorSet writes[2]; + + writes[0].setDstSet(desc_set); + writes[0].setDescriptorCount(1); + writes[0].setDescriptorType(vk::DescriptorType::eUniformBuffer); + writes[0].setPBufferInfo(&uniform_data.buffer_info); + + writes[1].setDstSet(desc_set); + writes[1].setDstBinding(1); + writes[1].setDescriptorCount(texture_count); + writes[1].setDescriptorType(vk::DescriptorType::eCombinedImageSampler); + writes[1].setPImageInfo(tex_descs); + + device.updateDescriptorSets(2, writes, 0, nullptr); + } + + void prepare_framebuffers() { + vk::ImageView attachments[2]; + attachments[1] = depth.view; + + auto const fb_info = vk::FramebufferCreateInfo() + .setRenderPass(render_pass) + .setAttachmentCount(2) + .setPAttachments(attachments) + .setWidth((uint32_t)width) + .setHeight((uint32_t)height) + .setLayers(1); + + framebuffers.reset(new vk::Framebuffer[swapchainImageCount]); + + for (uint32_t i = 0; i < swapchainImageCount; i++) { + attachments[0] = buffers[i].view; + auto const result = + device.createFramebuffer(&fb_info, nullptr, &framebuffers[i]); + VERIFY(result == vk::Result::eSuccess); + } + } + + vk::ShaderModule prepare_fs() { + size_t size = 0; + void *fragShaderCode = read_spv("cube-frag.spv", &size); + + frag_shader_module = prepare_shader_module(fragShaderCode, size); + + free(fragShaderCode); + + return frag_shader_module; + } + + void prepare_pipeline() { + vk::PipelineCacheCreateInfo const pipelineCacheInfo; + auto result = device.createPipelineCache(&pipelineCacheInfo, nullptr, + &pipelineCache); + VERIFY(result == vk::Result::eSuccess); + + vk::PipelineShaderStageCreateInfo const shaderStageInfo[2] = { + vk::PipelineShaderStageCreateInfo() + .setStage(vk::ShaderStageFlagBits::eVertex) + .setModule(prepare_vs()) + .setPName("main"), + vk::PipelineShaderStageCreateInfo() + .setStage(vk::ShaderStageFlagBits::eFragment) + .setModule(prepare_fs()) + .setPName("main")}; + + vk::PipelineVertexInputStateCreateInfo const vertexInputInfo; + + auto const inputAssemblyInfo = + vk::PipelineInputAssemblyStateCreateInfo().setTopology( + vk::PrimitiveTopology::eTriangleList); + + // TODO: Where are pViewports and pScissors set? + auto const viewportInfo = vk::PipelineViewportStateCreateInfo() + .setViewportCount(1) + .setScissorCount(1); + + auto const rasterizationInfo = + vk::PipelineRasterizationStateCreateInfo() + .setDepthClampEnable(VK_FALSE) + .setRasterizerDiscardEnable(VK_FALSE) + .setPolygonMode(vk::PolygonMode::eFill) + .setCullMode(vk::CullModeFlagBits::eBack) + .setFrontFace(vk::FrontFace::eCounterClockwise) + .setDepthBiasEnable(VK_FALSE) + .setLineWidth(1.0f); + + auto const multisampleInfo = vk::PipelineMultisampleStateCreateInfo(); + + auto const stencilOp = vk::StencilOpState() + .setFailOp(vk::StencilOp::eKeep) + .setPassOp(vk::StencilOp::eKeep) + .setCompareOp(vk::CompareOp::eAlways); + + auto const depthStencilInfo = + vk::PipelineDepthStencilStateCreateInfo() + .setDepthTestEnable(VK_TRUE) + .setDepthWriteEnable(VK_TRUE) + .setDepthCompareOp(vk::CompareOp::eLessOrEqual) + .setDepthBoundsTestEnable(VK_FALSE) + .setStencilTestEnable(VK_FALSE) + .setFront(stencilOp) + .setBack(stencilOp); + + vk::PipelineColorBlendAttachmentState const colorBlendAttachments[1] = { + vk::PipelineColorBlendAttachmentState().setColorWriteMask( + vk::ColorComponentFlagBits::eR | + vk::ColorComponentFlagBits::eG | + vk::ColorComponentFlagBits::eB | + vk::ColorComponentFlagBits::eA)}; + + auto const colorBlendInfo = vk::PipelineColorBlendStateCreateInfo() + .setAttachmentCount(1) + .setPAttachments(colorBlendAttachments); + + vk::DynamicState const dynamicStates[2] = {vk::DynamicState::eViewport, + vk::DynamicState::eScissor}; + + auto const dynamicStateInfo = vk::PipelineDynamicStateCreateInfo() + .setPDynamicStates(dynamicStates) + .setDynamicStateCount(2); + + auto const pipeline = vk::GraphicsPipelineCreateInfo() + .setStageCount(2) + .setPStages(shaderStageInfo) + .setPVertexInputState(&vertexInputInfo) + .setPInputAssemblyState(&inputAssemblyInfo) + .setPViewportState(&viewportInfo) + .setPRasterizationState(&rasterizationInfo) + .setPMultisampleState(&multisampleInfo) + .setPDepthStencilState(&depthStencilInfo) + .setPColorBlendState(&colorBlendInfo) + .setPDynamicState(&dynamicStateInfo) + .setLayout(pipeline_layout) + .setRenderPass(render_pass); + + result = device.createGraphicsPipelines(pipelineCache, 1, &pipeline, + nullptr, &this->pipeline); + VERIFY(result == vk::Result::eSuccess); + + device.destroyShaderModule(frag_shader_module, nullptr); + device.destroyShaderModule(vert_shader_module, nullptr); + } + + void prepare_render_pass() { + const vk::AttachmentDescription attachments[2] = { + vk::AttachmentDescription() + .setFlags(vk::AttachmentDescriptionFlagBits::eMayAlias) + .setFormat(format) + .setSamples(vk::SampleCountFlagBits::e1) + .setLoadOp(vk::AttachmentLoadOp::eClear) + .setStoreOp(vk::AttachmentStoreOp::eStore) + .setStencilLoadOp(vk::AttachmentLoadOp::eDontCare) + .setStencilStoreOp(vk::AttachmentStoreOp::eDontCare) + .setInitialLayout(vk::ImageLayout::eColorAttachmentOptimal) + .setFinalLayout(vk::ImageLayout::ePresentSrcKHR), + vk::AttachmentDescription() + .setFlags(vk::AttachmentDescriptionFlagBits::eMayAlias) + .setFormat(depth.format) + .setSamples(vk::SampleCountFlagBits::e1) + .setLoadOp(vk::AttachmentLoadOp::eClear) + .setStoreOp(vk::AttachmentStoreOp::eDontCare) + .setStencilLoadOp(vk::AttachmentLoadOp::eDontCare) + .setStencilStoreOp(vk::AttachmentStoreOp::eDontCare) + .setInitialLayout( + vk::ImageLayout::eDepthStencilAttachmentOptimal) + .setFinalLayout( + vk::ImageLayout::eDepthStencilAttachmentOptimal)}; + + auto const color_reference = + vk::AttachmentReference().setAttachment(0).setLayout( + vk::ImageLayout::eColorAttachmentOptimal); + + auto const depth_reference = + vk::AttachmentReference().setAttachment(1).setLayout( + vk::ImageLayout::eDepthStencilAttachmentOptimal); + + auto const subpass = + vk::SubpassDescription() + .setPipelineBindPoint(vk::PipelineBindPoint::eGraphics) + .setInputAttachmentCount(0) + .setPInputAttachments(nullptr) + .setColorAttachmentCount(1) + .setPColorAttachments(&color_reference) + .setPResolveAttachments(nullptr) + .setPDepthStencilAttachment(&depth_reference) + .setPreserveAttachmentCount(0) + .setPPreserveAttachments(nullptr); + + auto const rp_info = vk::RenderPassCreateInfo() + .setAttachmentCount(2) + .setPAttachments(attachments) + .setSubpassCount(1) + .setPSubpasses(&subpass) + .setDependencyCount(0) + .setPDependencies(nullptr); + + auto result = device.createRenderPass(&rp_info, nullptr, &render_pass); + VERIFY(result == vk::Result::eSuccess); + } + + vk::ShaderModule prepare_shader_module(const void *code, size_t size) { + auto const moduleCreateInfo = + vk::ShaderModuleCreateInfo().setCodeSize(size).setPCode( + (uint32_t const *)code); + + vk::ShaderModule module; + auto result = + device.createShaderModule(&moduleCreateInfo, nullptr, &module); + VERIFY(result == vk::Result::eSuccess); + + return module; + } + + void prepare_texture_image(const char *filename, texture_object *tex_obj, + vk::ImageTiling tiling, + vk::ImageUsageFlags usage, + vk::MemoryPropertyFlags required_props) { + int32_t tex_width; + int32_t tex_height; + if (!loadTexture(filename, nullptr, nullptr, &tex_width, &tex_height)) { + ERR_EXIT("Failed to load textures", "Load Texture Failure"); + } + + tex_obj->tex_width = tex_width; + tex_obj->tex_height = tex_height; + + auto const image_create_info = + vk::ImageCreateInfo() + .setImageType(vk::ImageType::e2D) + .setFormat(vk::Format::eR8G8B8A8Unorm) + .setExtent({(uint32_t)tex_width, (uint32_t)tex_height, 1}) + .setMipLevels(1) + .setArrayLayers(1) + .setSamples(vk::SampleCountFlagBits::e1) + .setTiling(tiling) + .setUsage(usage) + .setSharingMode(vk::SharingMode::eExclusive) + .setQueueFamilyIndexCount(0) + .setPQueueFamilyIndices(nullptr) + .setInitialLayout(vk::ImageLayout::ePreinitialized); + + auto result = + device.createImage(&image_create_info, nullptr, &tex_obj->image); + VERIFY(result == vk::Result::eSuccess); + + vk::MemoryRequirements mem_reqs; + device.getImageMemoryRequirements(tex_obj->image, &mem_reqs); + + tex_obj->mem_alloc.setAllocationSize(mem_reqs.size); + tex_obj->mem_alloc.setMemoryTypeIndex(0); + + auto pass = + memory_type_from_properties(mem_reqs.memoryTypeBits, required_props, + &tex_obj->mem_alloc.memoryTypeIndex); + VERIFY(pass == true); + + result = device.allocateMemory(&tex_obj->mem_alloc, nullptr, + &(tex_obj->mem)); + VERIFY(result == vk::Result::eSuccess); + + result = device.bindImageMemory(tex_obj->image, tex_obj->mem, 0); + VERIFY(result == vk::Result::eSuccess); + + if (required_props & vk::MemoryPropertyFlagBits::eHostVisible) { + auto const subres = + vk::ImageSubresource() + .setAspectMask(vk::ImageAspectFlagBits::eColor) + .setMipLevel(0) + .setArrayLayer(0); + vk::SubresourceLayout layout; + device.getImageSubresourceLayout(tex_obj->image, &subres, &layout); + + auto data = device.mapMemory(tex_obj->mem, 0, + tex_obj->mem_alloc.allocationSize); + VERIFY(data.result == vk::Result::eSuccess); + + if (!loadTexture(filename, (uint8_t *)data.value, &layout, + &tex_width, &tex_height)) { + fprintf(stderr, "Error loading texture: %s\n", filename); + } + + device.unmapMemory(tex_obj->mem); + } + + tex_obj->imageLayout = vk::ImageLayout::eShaderReadOnlyOptimal; + set_image_layout(tex_obj->image, vk::ImageAspectFlagBits::eColor, + vk::ImageLayout::ePreinitialized, tex_obj->imageLayout, + vk::AccessFlagBits::eHostWrite); + } + + void prepare_textures() { + vk::Format const tex_format = vk::Format::eR8G8B8A8Unorm; + vk::FormatProperties props; + gpu.getFormatProperties(tex_format, &props); + + for (uint32_t i = 0; i < texture_count; i++) { + if ((props.linearTilingFeatures & + vk::FormatFeatureFlagBits::eSampledImage) && + !use_staging_buffer) { + /* Device can texture using linear textures */ + prepare_texture_image( + tex_files[i], &textures[i], vk::ImageTiling::eLinear, + vk::ImageUsageFlagBits::eSampled, + vk::MemoryPropertyFlagBits::eHostVisible | + vk::MemoryPropertyFlagBits::eHostCoherent); + } else if (props.optimalTilingFeatures & + vk::FormatFeatureFlagBits::eSampledImage) { + /* Must use staging buffer to copy linear texture to optimized + */ + texture_object staging_texture; + + prepare_texture_image( + tex_files[i], &staging_texture, vk::ImageTiling::eLinear, + vk::ImageUsageFlagBits::eTransferSrc, + vk::MemoryPropertyFlagBits::eHostVisible | + vk::MemoryPropertyFlagBits::eHostCoherent); + + prepare_texture_image(tex_files[i], &textures[i], + vk::ImageTiling::eOptimal, + vk::ImageUsageFlagBits::eTransferDst | + vk::ImageUsageFlagBits::eSampled, + vk::MemoryPropertyFlagBits::eDeviceLocal); + + set_image_layout( + staging_texture.image, vk::ImageAspectFlagBits::eColor, + staging_texture.imageLayout, + vk::ImageLayout::eTransferSrcOptimal, vk::AccessFlags()); + + set_image_layout( + textures[i].image, vk::ImageAspectFlagBits::eColor, + textures[i].imageLayout, + vk::ImageLayout::eTransferDstOptimal, vk::AccessFlags()); + + auto const subresource = + vk::ImageSubresourceLayers() + .setAspectMask(vk::ImageAspectFlagBits::eColor) + .setMipLevel(0) + .setBaseArrayLayer(0) + .setLayerCount(1); + + auto const copy_region = + vk::ImageCopy() + .setSrcSubresource(subresource) + .setSrcOffset({0, 0, 0}) + .setDstSubresource(subresource) + .setDstOffset({0, 0, 0}) + .setExtent({(uint32_t)staging_texture.tex_width, + (uint32_t)staging_texture.tex_height, 1}); + + cmd.copyImage( + staging_texture.image, vk::ImageLayout::eTransferSrcOptimal, + textures[i].image, vk::ImageLayout::eTransferDstOptimal, 1, + ©_region); + + set_image_layout(textures[i].image, + vk::ImageAspectFlagBits::eColor, + vk::ImageLayout::eTransferDstOptimal, + textures[i].imageLayout, vk::AccessFlags()); + + flush_init_cmd(); + + destroy_texture_image(&staging_texture); + } else { + assert( + !"No support for R8G8B8A8_UNORM as texture image format"); + } + + auto const samplerInfo = + vk::SamplerCreateInfo() + .setMagFilter(vk::Filter::eNearest) + .setMinFilter(vk::Filter::eNearest) + .setMipmapMode(vk::SamplerMipmapMode::eNearest) + .setAddressModeU(vk::SamplerAddressMode::eClampToEdge) + .setAddressModeV(vk::SamplerAddressMode::eClampToEdge) + .setAddressModeW(vk::SamplerAddressMode::eClampToEdge) + .setMipLodBias(0.0f) + .setAnisotropyEnable(VK_FALSE) + .setMaxAnisotropy(1) + .setCompareEnable(VK_FALSE) + .setCompareOp(vk::CompareOp::eNever) + .setMinLod(0.0f) + .setMaxLod(0.0f) + .setBorderColor(vk::BorderColor::eFloatOpaqueWhite) + .setUnnormalizedCoordinates(VK_FALSE); + + auto result = device.createSampler(&samplerInfo, nullptr, + &textures[i].sampler); + VERIFY(result == vk::Result::eSuccess); + + auto const viewInfo = + vk::ImageViewCreateInfo() + .setImage(textures[i].image) + .setViewType(vk::ImageViewType::e2D) + .setFormat(tex_format) + .setSubresourceRange(vk::ImageSubresourceRange( + vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1)); + + result = + device.createImageView(&viewInfo, nullptr, &textures[i].view); + VERIFY(result == vk::Result::eSuccess); + } + } + + vk::ShaderModule prepare_vs() { + size_t size = 0; + void *vertShaderCode = read_spv("cube-vert.spv", &size); + + vert_shader_module = prepare_shader_module(vertShaderCode, size); + + free(vertShaderCode); + + return vert_shader_module; + } + + char *read_spv(const char *filename, size_t *psize) { + FILE *fp = fopen(filename, "rb"); + if (!fp) { + return nullptr; + } + + fseek(fp, 0L, SEEK_END); + long int size = ftell(fp); + + fseek(fp, 0L, SEEK_SET); + + void *shader_code = malloc(size); + size_t retval = fread(shader_code, size, 1, fp); + VERIFY(retval == 1); + + *psize = size; + + fclose(fp); + + return (char *)shader_code; + } + + void resize() { + uint32_t i; + + // Don't react to resize until after first initialization. + if (!prepared) { + return; + } + + // In order to properly resize the window, we must re-create the + // swapchain + // AND redo the command buffers, etc. + // + // First, perform part of the cleanup() function: + prepared = false; + auto result = device.waitIdle(); + VERIFY(result == vk::Result::eSuccess); + + for (i = 0; i < swapchainImageCount; i++) { + device.destroyFramebuffer(framebuffers[i], nullptr); + } + + device.destroyDescriptorPool(desc_pool, nullptr); + + device.destroyPipeline(pipeline, nullptr); + device.destroyPipelineCache(pipelineCache, nullptr); + device.destroyRenderPass(render_pass, nullptr); + device.destroyPipelineLayout(pipeline_layout, nullptr); + device.destroyDescriptorSetLayout(desc_layout, nullptr); + + for (i = 0; i < texture_count; i++) { + device.destroyImageView(textures[i].view, nullptr); + device.destroyImage(textures[i].image, nullptr); + device.freeMemory(textures[i].mem, nullptr); + device.destroySampler(textures[i].sampler, nullptr); + } + + device.destroyImageView(depth.view, nullptr); + device.destroyImage(depth.image, nullptr); + device.freeMemory(depth.mem, nullptr); + + device.destroyBuffer(uniform_data.buf, nullptr); + device.freeMemory(uniform_data.mem, nullptr); + + for (i = 0; i < swapchainImageCount; i++) { + device.destroyImageView(buffers[i].view, nullptr); + device.freeCommandBuffers(cmd_pool, 1, &buffers[i].cmd); + } + + device.destroyCommandPool(cmd_pool, nullptr); + if (separate_present_queue) { + device.destroyCommandPool(present_cmd_pool, nullptr); + } + + // Second, re-perform the prepare() function, which will re-create the + // swapchain. + prepare(); + } + + void set_image_layout(vk::Image image, vk::ImageAspectFlags aspectMask, + vk::ImageLayout oldLayout, vk::ImageLayout newLayout, + vk::AccessFlags srcAccessMask) { + if (!cmd) { + auto const cmd = vk::CommandBufferAllocateInfo() + .setCommandPool(cmd_pool) + .setLevel(vk::CommandBufferLevel::ePrimary) + .setCommandBufferCount(1); + + auto result = device.allocateCommandBuffers(&cmd, &this->cmd); + VERIFY(result == vk::Result::eSuccess); + + auto const cmd_buf_info = + vk::CommandBufferBeginInfo().setPInheritanceInfo(nullptr); + + result = this->cmd.begin(&cmd_buf_info); + VERIFY(result == vk::Result::eSuccess); + } + + auto DstAccessMask = [](vk::ImageLayout const &layout) { + vk::AccessFlags flags; + + switch (layout) { + case vk::ImageLayout::eTransferDstOptimal: + // Make sure anything that was copying from this image has + // completed + flags = vk::AccessFlagBits::eTransferRead; + break; + case vk::ImageLayout::eColorAttachmentOptimal: + flags = vk::AccessFlagBits::eColorAttachmentWrite; + break; + case vk::ImageLayout::eDepthStencilAttachmentOptimal: + flags = vk::AccessFlagBits::eDepthStencilAttachmentWrite; + break; + case vk::ImageLayout::eShaderReadOnlyOptimal: + // Make sure any Copy or CPU writes to image are flushed + flags = vk::AccessFlagBits::eShaderRead | + vk::AccessFlagBits::eInputAttachmentRead; + break; + case vk::ImageLayout::ePresentSrcKHR: + flags = vk::AccessFlagBits::eMemoryRead; + break; + default: + break; + } + + return flags; + }; + + auto const barrier = vk::ImageMemoryBarrier() + .setSrcAccessMask(srcAccessMask) + .setDstAccessMask(DstAccessMask(newLayout)) + .setOldLayout(oldLayout) + .setNewLayout(newLayout) + .setSrcQueueFamilyIndex(0) + .setDstQueueFamilyIndex(0) + .setImage(image) + .setSubresourceRange(vk::ImageSubresourceRange( + aspectMask, 0, 1, 0, 1)); + + cmd.pipelineBarrier(vk::PipelineStageFlagBits::eTopOfPipe, + vk::PipelineStageFlagBits::eTopOfPipe, + vk::DependencyFlagBits(), 0, nullptr, 0, nullptr, 1, + &barrier); + } + + void update_data_buffer() { + mat4x4 VP; + mat4x4_mul(VP, projection_matrix, view_matrix); + + // Rotate 22.5 degrees around the Y axis + mat4x4 Model; + mat4x4_dup(Model, model_matrix); + mat4x4_rotate(model_matrix, Model, 0.0f, 1.0f, 0.0f, + (float)degreesToRadians(spin_angle)); + + mat4x4 MVP; + mat4x4_mul(MVP, VP, model_matrix); + + auto data = device.mapMemory(uniform_data.mem, 0, + uniform_data.mem_alloc.allocationSize, + vk::MemoryMapFlags()); + VERIFY(data.result == vk::Result::eSuccess); + + memcpy(data.value, (const void *)&MVP[0][0], sizeof(MVP)); + + device.unmapMemory(uniform_data.mem); + } + + bool loadTexture(const char *filename, uint8_t *rgba_data, + vk::SubresourceLayout *layout, int32_t *width, + int32_t *height) { + FILE *fPtr = fopen(filename, "rb"); + if (!fPtr) { + return false; + } + + char header[256]; + char *cPtr = fgets(header, 256, fPtr); // P6 + if (cPtr == nullptr || strncmp(header, "P6\n", 3)) { + fclose(fPtr); + return false; + } + + do { + cPtr = fgets(header, 256, fPtr); + if (cPtr == nullptr) { + fclose(fPtr); + return false; + } + } while (!strncmp(header, "#", 1)); + + sscanf(header, "%u %u", width, height); + if (rgba_data == nullptr) { + fclose(fPtr); + return true; + } + + char *result = fgets(header, 256, fPtr); // Format + VERIFY(result != nullptr); + if (cPtr == nullptr || strncmp(header, "255\n", 3)) { + fclose(fPtr); + return false; + } + + for (int y = 0; y < *height; y++) { + uint8_t *rowPtr = rgba_data; + + for (int x = 0; x < *width; x++) { + size_t s = fread(rowPtr, 3, 1, fPtr); + (void)s; + rowPtr[3] = 255; /* Alpha of 1 */ + rowPtr += 4; + } + + rgba_data += layout->rowPitch; + } + + fclose(fPtr); + return true; + } + + bool memory_type_from_properties(uint32_t typeBits, + vk::MemoryPropertyFlags 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 ((memory_properties.memoryTypes[i].propertyFlags & + requirements_mask) == requirements_mask) { + *typeIndex = i; + return true; + } + } + typeBits >>= 1; + } + + // No memory types matched, return failure + return false; + } + +#if defined(VK_USE_PLATFORM_WIN32_KHR) + void run() { + if (!prepared) { + return; + } + + update_data_buffer(); + draw(); + curFrame++; + + if (frameCount != INT_MAX && curFrame == frameCount) { + PostQuitMessage(validation_error); + } + } + + void create_window() { + WNDCLASSEX win_class; + + // Initialize the window class structure: + win_class.cbSize = sizeof(WNDCLASSEX); + win_class.style = CS_HREDRAW | CS_VREDRAW; + win_class.lpfnWndProc = WndProc; + win_class.cbClsExtra = 0; + win_class.cbWndExtra = 0; + win_class.hInstance = connection; // hInstance + win_class.hIcon = LoadIcon(nullptr, IDI_APPLICATION); + win_class.hCursor = LoadCursor(nullptr, IDC_ARROW); + win_class.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); + win_class.lpszMenuName = nullptr; + win_class.lpszClassName = name; + win_class.hIconSm = LoadIcon(nullptr, IDI_WINLOGO); + + // Register window class: + if (!RegisterClassEx(&win_class)) { + // It didn't work, so try to give a useful error: + printf("Unexpected error trying to start the application!\n"); + fflush(stdout); + exit(1); + } + + // Create window with the registered class: + RECT wr = {0, 0, static_cast<LONG>(width), static_cast<LONG>(height)}; + AdjustWindowRect(&wr, WS_OVERLAPPEDWINDOW, FALSE); + window = CreateWindowEx(0, + name, // class name + name, // app name + WS_OVERLAPPEDWINDOW | // window style + WS_VISIBLE | WS_SYSMENU, + 100, 100, // x/y coords + wr.right - wr.left, // width + wr.bottom - wr.top, // height + nullptr, // handle to parent + nullptr, // handle to menu + connection, // hInstance + nullptr); // no extra parameters + + if (!window) { + // It didn't work, so try to give a useful error: + printf("Cannot create a window in which to draw!\n"); + fflush(stdout); + exit(1); + } + + // Window client area size must be at least 1 pixel high, to prevent + // crash. + minsize.x = GetSystemMetrics(SM_CXMINTRACK); + minsize.y = GetSystemMetrics(SM_CYMINTRACK) + 1; + } + +#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) +#if defined(VK_USE_PLATFORM_XLIB_KHR) + + void create_xlib_window() { + display = XOpenDisplay(nullptr); + long visualMask = VisualScreenMask; + int numberOfVisuals; + XVisualInfo vInfoTemplate = {}; + vInfoTemplate.screen = DefaultScreen(display); + XVisualInfo *visualInfo = XGetVisualInfo( + display, visualMask, &vInfoTemplate, &numberOfVisuals); + + Colormap colormap = + XCreateColormap(display, RootWindow(display, vInfoTemplate.screen), + visualInfo->visual, AllocNone); + + XSetWindowAttributes windowAttributes = {}; + windowAttributes.colormap = colormap; + windowAttributes.background_pixel = 0xFFFFFFFF; + windowAttributes.border_pixel = 0; + windowAttributes.event_mask = + KeyPressMask | KeyReleaseMask | StructureNotifyMask | ExposureMask; + + xlib_window = XCreateWindow( + display, RootWindow(display, vInfoTemplate.screen), 0, 0, width, + height, 0, visualInfo->depth, InputOutput, visualInfo->visual, + CWBackPixel | CWBorderPixel | CWEventMask | CWColormap, + &windowAttributes); + + XSelectInput(display, xlib_window, ExposureMask | KeyPressMask); + XMapWindow(display, xlib_window); + XFlush(display); + xlib_wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False); + } + + void handle_xlib_event(const XEvent *event) { + switch (event->type) { + case ClientMessage: + if ((Atom)event->xclient.data.l[0] == xlib_wm_delete_window) { + quit = true; + } + break; + case KeyPress: + switch (event->xkey.keycode) { + case 0x9: // Escape + quit = true; + break; + case 0x71: // left arrow key + spin_angle += spin_increment; + break; + case 0x72: // right arrow key + spin_angle -= spin_increment; + break; + case 0x41: + pause = !pause; + break; + } + break; + case ConfigureNotify: + if (((int32_t)width != event->xconfigure.width) || + ((int32_t)height != event->xconfigure.height)) { + width = event->xconfigure.width; + height = event->xconfigure.height; + resize(); + } + break; + default: + break; + } + } + + void run_xlib() { + while (!quit) { + XEvent event; + + if (pause) { + XNextEvent(display, &event); + handle_xlib_event(&event); + } else { + while (XPending(display) > 0) { + XNextEvent(display, &event); + handle_xlib_event(&event); + } + } + + update_data_buffer(); + draw(); + curFrame++; + + if (frameCount != UINT32_MAX && curFrame == frameCount) { + quit = true; + } + } + } + +#endif +#if defined(VK_USE_PLATFORM_XCB_KHR) + + void handle_xcb_event(const xcb_generic_event_t *event) { + uint8_t event_code = event->response_type & 0x7f; + switch (event_code) { + case XCB_EXPOSE: + // TODO: Resize window + break; + case XCB_CLIENT_MESSAGE: + if ((*(xcb_client_message_event_t *)event).data.data32[0] == + (*atom_wm_delete_window).atom) { + quit = true; + } + break; + case XCB_KEY_RELEASE: { + const xcb_key_release_event_t *key = + (const xcb_key_release_event_t *)event; + + switch (key->detail) { + case 0x9: // Escape + quit = true; + break; + case 0x71: // left arrow key + spin_angle += spin_increment; + break; + case 0x72: // right arrow key + spin_angle -= spin_increment; + break; + case 0x41: + pause = !pause; + break; + } + } break; + case XCB_CONFIGURE_NOTIFY: { + const xcb_configure_notify_event_t *cfg = + (const xcb_configure_notify_event_t *)event; + if ((width != cfg->width) || (height != cfg->height)) { + width = cfg->width; + height = cfg->height; + resize(); + } + } break; + default: + break; + } + } + + void run_xcb() { + xcb_flush(connection); + + while (!quit) { + xcb_generic_event_t *event; + + if (pause) { + event = xcb_wait_for_event(connection); + } else { + event = xcb_poll_for_event(connection); + while (event) { + handle_xcb_event(event); + free(event); + event = xcb_poll_for_event(connection); + } + } + + update_data_buffer(); + draw(); + curFrame++; + if (frameCount != UINT32_MAX && curFrame == frameCount) { + quit = true; + } + } + } + + void create_xcb_window() { + uint32_t value_mask, value_list[32]; + + xcb_window = xcb_generate_id(connection); + + value_mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK; + value_list[0] = screen->black_pixel; + value_list[1] = XCB_EVENT_MASK_KEY_RELEASE | XCB_EVENT_MASK_EXPOSURE | + XCB_EVENT_MASK_STRUCTURE_NOTIFY; + + xcb_create_window(connection, XCB_COPY_FROM_PARENT, xcb_window, + screen->root, 0, 0, width, height, 0, + XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual, + value_mask, value_list); + + /* Magic code that will send notification when window is destroyed */ + xcb_intern_atom_cookie_t cookie = + xcb_intern_atom(connection, 1, 12, "WM_PROTOCOLS"); + xcb_intern_atom_reply_t *reply = + xcb_intern_atom_reply(connection, cookie, 0); + + xcb_intern_atom_cookie_t cookie2 = + xcb_intern_atom(connection, 0, 16, "WM_DELETE_WINDOW"); + atom_wm_delete_window = xcb_intern_atom_reply(connection, cookie2, 0); + + xcb_change_property(connection, XCB_PROP_MODE_REPLACE, xcb_window, + (*reply).atom, 4, 32, 1, + &(*atom_wm_delete_window).atom); + + free(reply); + + xcb_map_window(connection, xcb_window); + + // Force the x/y coordinates to 100,100 results are identical in + // consecutive + // runs + const uint32_t coords[] = {100, 100}; + xcb_configure_window(connection, xcb_window, + XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, coords); + } + +#endif +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + + void run() { + while (!quit) { + update_data_buffer(); + draw(); + curFrame++; + if (frameCount != UINT32_MAX && curFrame == frameCount) { + quit = true; + } + } + } + + void create_window() { + window = wl_compositor_create_surface(compositor); + if (!window) { + printf("Can not create wayland_surface from compositor!\n"); + fflush(stdout); + exit(1); + } + + shell_surface = wl_shell_get_shell_surface(shell, window); + if (!shell_surface) { + printf("Can not get shell_surface from wayland_surface!\n"); + fflush(stdout); + exit(1); + } + + wl_shell_surface_add_listener(shell_surface, &shell_surface_listener, + this); + wl_shell_surface_set_toplevel(shell_surface); + wl_shell_surface_set_title(shell_surface, APP_SHORT_NAME); + } + +#endif + +#if defined(VK_USE_PLATFORM_WIN32_KHR) + HINSTANCE connection; // hInstance - Windows Instance + HWND window; // hWnd - window handle + POINT minsize; // minimum window size + char name[APP_NAME_STR_LEN]; // Name to put on the window/icon +#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) + Display *display; + Window xlib_window; + Atom xlib_wm_delete_window; + + 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) + wl_display *display; + wl_registry *registry; + wl_compositor *compositor; + wl_surface *window; + wl_shell *shell; + wl_shell_surface *shell_surface; +#endif + + vk::SurfaceKHR surface; + bool prepared; + bool use_staging_buffer; + bool use_xlib; + bool separate_present_queue; + + vk::Instance inst; + vk::PhysicalDevice gpu; + vk::Device device; + vk::Queue graphics_queue; + vk::Queue present_queue; + uint32_t graphics_queue_family_index; + uint32_t present_queue_family_index; + vk::Semaphore image_acquired_semaphores[FRAME_LAG]; + vk::Semaphore draw_complete_semaphores[FRAME_LAG]; + vk::Semaphore image_ownership_semaphores[FRAME_LAG]; + vk::PhysicalDeviceProperties gpu_props; + std::unique_ptr<vk::QueueFamilyProperties[]> queue_props; + vk::PhysicalDeviceMemoryProperties memory_properties; + + uint32_t enabled_extension_count; + uint32_t enabled_layer_count; + char const *extension_names[64]; + char const *enabled_layers[64]; + + uint32_t width; + uint32_t height; + vk::Format format; + vk::ColorSpaceKHR color_space; + + uint32_t swapchainImageCount; + vk::SwapchainKHR swapchain; + std::unique_ptr<SwapchainBuffers[]> buffers; + vk::Fence fences[FRAME_LAG]; + bool fencesInited[FRAME_LAG]; + uint32_t frame_index; + + vk::CommandPool cmd_pool; + vk::CommandPool present_cmd_pool; + + struct { + vk::Format format; + vk::Image image; + vk::MemoryAllocateInfo mem_alloc; + vk::DeviceMemory mem; + vk::ImageView view; + } depth; + + static int32_t const texture_count = 1; + texture_object textures[texture_count]; + + struct { + vk::Buffer buf; + vk::MemoryAllocateInfo mem_alloc; + vk::DeviceMemory mem; + vk::DescriptorBufferInfo buffer_info; + } uniform_data; + + vk::CommandBuffer cmd; // Buffer for initialization commands + vk::PipelineLayout pipeline_layout; + vk::DescriptorSetLayout desc_layout; + vk::PipelineCache pipelineCache; + vk::RenderPass render_pass; + vk::Pipeline pipeline; + + mat4x4 projection_matrix; + mat4x4 view_matrix; + mat4x4 model_matrix; + + float spin_angle; + float spin_increment; + bool pause; + + vk::ShaderModule vert_shader_module; + vk::ShaderModule frag_shader_module; + + vk::DescriptorPool desc_pool; + vk::DescriptorSet desc_set; + + std::unique_ptr<vk::Framebuffer[]> framebuffers; + + bool quit; + uint32_t curFrame; + uint32_t frameCount; + bool validate; + bool use_break; + bool suppress_popups; + + uint32_t current_buffer; + uint32_t queue_family_count; +}; + +#if _WIN32 +// Include header required for parsing the command line options. +#include <shellapi.h> + +Demo demo; + +// MS-Windows event handling function: +LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { + switch (uMsg) { + case WM_CLOSE: + PostQuitMessage(validation_error); + break; + case WM_PAINT: + demo.run(); + break; + case WM_GETMINMAXINFO: // set window's minimum size + ((MINMAXINFO *)lParam)->ptMinTrackSize = demo.minsize; + return 0; + case WM_SIZE: + // Resize the application to the new window size, except when + // it was minimized. Vulkan doesn't support images or swapchains + // with width=0 and height=0. + if (wParam != SIZE_MINIMIZED) { + demo.width = lParam & 0xffff; + demo.height = (lParam & 0xffff0000) >> 16; + demo.resize(); + } + break; + default: + break; + } + + return (DefWindowProc(hWnd, uMsg, wParam, lParam)); +} + +int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, + int nCmdShow) { + // TODO: Gah.. refactor. This isn't 1989. + MSG msg; // message + bool done; // flag saying when app is complete + int argc; + char **argv; + + // Use the CommandLine functions to get the command line arguments. + // Unfortunately, Microsoft outputs + // this information as wide characters for Unicode, and we simply want the + // Ascii version to be compatible + // with the non-Windows side. So, we have to convert the information to + // Ascii character strings. + LPWSTR *commandLineArgs = CommandLineToArgvW(GetCommandLineW(), &argc); + if (nullptr == commandLineArgs) { + argc = 0; + } + + if (argc > 0) { + argv = (char **)malloc(sizeof(char *) * argc); + if (argv == nullptr) { + argc = 0; + } else { + for (int iii = 0; iii < argc; iii++) { + size_t wideCharLen = wcslen(commandLineArgs[iii]); + size_t numConverted = 0; + + argv[iii] = (char *)malloc(sizeof(char) * (wideCharLen + 1)); + if (argv[iii] != nullptr) { + wcstombs_s(&numConverted, argv[iii], wideCharLen + 1, + commandLineArgs[iii], wideCharLen + 1); + } + } + } + } else { + argv = nullptr; + } + + demo.init(argc, argv); + + // Free up the items we had to allocate for the command line arguments. + if (argc > 0 && argv != nullptr) { + for (int iii = 0; iii < argc; iii++) { + if (argv[iii] != nullptr) { + free(argv[iii]); + } + } + free(argv); + } + + demo.connection = hInstance; + strncpy(demo.name, "cube", APP_NAME_STR_LEN); + demo.create_window(); + demo.init_vk_swapchain(); + + demo.prepare(); + + done = false; // initialize loop condition variable + + // main message loop + while (!done) { + PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE); + if (msg.message == WM_QUIT) // check for a quit message + { + done = true; // if found, quit app + } else { + /* Translate and dispatch to event queue*/ + TranslateMessage(&msg); + DispatchMessage(&msg); + } + RedrawWindow(demo.window, nullptr, nullptr, RDW_INTERNALPAINT); + } + + demo.cleanup(); + + return (int)msg.wParam; +} + +#elif __linux__ + +#if defined(VK_USE_PLATFORM_WAYLAND_KHR) +static void handle_ping(void *data, wl_shell_surface *shell_surface, + uint32_t serial) { + wl_shell_surface_pong(shell_surface, serial); +} + +static void handle_configure(void *data, + wl_shell_surface *shell_surface, + uint32_t edges, int32_t width, + int32_t height) {} + +static void handle_popup_done(void *data, + wl_shell_surface *shell_surface) {} + +static const wl_shell_surface_listener shell_surface_listener = { + handle_ping, handle_configure, handle_popup_done}; +#endif + +int main(int argc, char **argv) { + Demo demo; + + demo.init(argc, argv); + +#if defined(VK_USE_PLATFORM_XLIB_KHR) && defined(VK_USE_PLATFORM_XCB_KHR) + if (demo.use_xlib) { + demo.create_xlib_window(); + } else { + demo.create_xcb_window(); +#elif defined(VK_USE_PLATFORM_XCB_KHR) + demo.create_xcb_window(); +#elif defined(VK_USE_PLATFORM_XLIB_KHR) + demo.create_xlib_window(); +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) + demo.create_window(); +#endif + } + + demo.init_vk_swapchain(); + + demo.prepare(); + +#if defined(VK_USE_PLATFORM_XLIB_KHR) && defined(VK_USE_PLATFORM_XCB_KHR) + if (demo.use_xlib) { + demo.run_xlib(); + } else { + demo.run_xcb(); +#elif defined(VK_USE_PLATFORM_XCB_KHR) +demo.run_xcb(); +#elif defined(VK_USE_PLATFORM_XLIB_KHR) +demo.run_xlib(); +#elif defined(VK_USE_PLATFORM_WAYLAND_KHR) +demo.run(); +#endif + } + + demo.cleanup(); + + return validation_error; +} + +#else +#error "Platform not supported" +#endif |