From 6d36eee057f3d8504e337e6000c664683c2989ab Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Tue, 10 Jan 2023 13:50:31 +0200 Subject: [PATCH] foo --- src/app.c | 21 ++++++++++++ src/vk.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/vk.h | 10 ++++++ 3 files changed, 138 insertions(+) diff --git a/src/app.c b/src/app.c index 044a885..9a72309 100644 --- a/src/app.c +++ b/src/app.c @@ -3,6 +3,8 @@ #include "app.h" #include "vk.h" +static VkSemaphore sem_getimg; + int app_init(void) { unsigned int flags; @@ -10,17 +12,36 @@ int app_init(void) if(vk_init(VKINIT_DEPTH, &flags) == -1) { return -1; } + + sem_getimg = vk_create_sem(); + sem_draw = vk_create_sem(); return 0; } void app_cleanup(void) { + vk_free_sem(sem_getimg); + vk_free_sem(sem_draw); vk_cleanup(); } void app_display(void) { + int imgid; + VkCommandBuffer cmdbuf; + + /* get the next image from the swap chain */ + imgid = vk_next_image(sem_getimg); + cmdbuf = vk_get_cmdbuf(imgid); + + /* TODO record */ + + /* submit the command buffer, wait for one semaphore, signal another */ + vk_submit(cmdbuf, sem_getimg, sem_draw); + + /* swap buffers after drawing is finished */ + vk_present(sem_draw); } void app_reshape(int x, int y) diff --git a/src/vk.c b/src/vk.c index 8b12108..ebc31ae 100644 --- a/src/vk.c +++ b/src/vk.c @@ -2,6 +2,8 @@ #include #include #include +#include +#include #include #include "vk.h" #include "util.h" @@ -81,6 +83,7 @@ static int create_surface(void); static int choose_phys_dev(void); static int create_device(void); static int create_swapchain(void); +static int create_default_cmdbuf(void); static int choose_pixfmt(void); static int eval_pdev_score(VkPhysicalDevice dev); @@ -113,6 +116,7 @@ static int vksc_numimg; static VkImage *vksc_img; static VkExtent2D vksc_extent; static VkImageView *vksc_view; +static VkCommandBuffer *vksc_cmdbuf; /* default command buffers (vksc_numimg) */ static VkLayerProperties *inst_layers; static VkExtensionProperties *inst_ext, *dev_ext; @@ -232,10 +236,23 @@ int vk_reshape(int xsz, int ysz) if(create_swapchain() == -1) return -1; + if(!vksc_cmdbuf) { + if(create_default_cmdbuf() == -1) return -1; + } + /* TODO create depth/stencil buffers as needed (initflags) */ return 0; } +int vk_next_image(VkSemaphore sem) +{ + uint32_t idx; + if(vkAcquireNextImageKHR(vkdev, vksc, UINT64_MAX, sem, 0, &idx) != 0) { + return -1; + } + return (int)idx; +} + int vk_find_qfamily(unsigned int flags) { int i, famidx = -1; @@ -931,6 +948,64 @@ VkPipeline vk_pipeln(int pp) } +VkShaderModule vk_load_shader(const char *fname) +{ + FILE *fp; + long sz; + void *buf; + VkShaderModuleCreateInfo sinf; + VkShaderModule sdr; + + if(!(fp = fopen(fname, "rb"))) { + fprintf(stderr, "failed to open shader: %s: %s\n", fname, strerror(errno)); + return 0; + } + fseek(fp, 0, SEEK_END); + sz = ftell(fp); + fseek(fp, 0, SEEK_SET); + + buf = alloca(sz); + if(fread(buf, 1, sz, fp) < sz) { + fprintf(stderr, "unexpected EOF while reading shader: %s\n", fname); + fclose(fp); + return 0; + } + fclose(fp); + + memset(&sinf, 0, sizeof sinf); + sinf.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO; + sinf.codeSize = sz; + sinf.pCode = buf; + + if(vkCreateShaderModule(vkdev, &sinf, 0, &sdr) != 0) { + fprintf(stderr, "failed to create shader from %s\n", fname); + return 0; + } + return sdr; +} + +void vk_free_shader(VkShaderModule sdr) +{ + vkDestroyShaderModule(vkdev, sdr, 0); +} + +VkSemaphore vk_create_sem(void) +{ + VkSemaphore sem; + VkSemaphoreCreateInfo sinf = {0}; + + sinf.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO; + if(vkCreateSemaphore(vkdev, &sinf, 0, &sem) != 0) { + return 0; + } + return sem; +} + +void vk_free_sem(VkSemaphore sem) +{ + vkDestroySemaphore(vkdev, sem, 0); +} + #define ARRSZ(arr) (sizeof arr / sizeof *arr) static const char *known_layer_list[] = { "VK_LAYER_GOOGLE_threading", @@ -1244,6 +1319,38 @@ static int create_swapchain(void) return 0; } +static int create_default_cmdbuf(void) +{ + int i, qfam; + VkCommandPool cmdpool; + VkCommandBufferAllocateInfo cbinf = {0}; + + assert(!vksc_cmdbuf); + + if((qfam = vk_find_qfamily(VKQ_GFX | VKQ_PRESENT)) == -1) { + fprintf(stderr, "failed to find a gfx|present capable queue family\n"); + return -1; + } + if(!(cmdpool = find_cmdpool(qfam))) { + fprintf(stderr, "failed to find usable command pool for default command buffers\n"); + return -1; + } + if(!(vksc_cmdbuf = malloc(vksc_numimg * sizeof *vksc_cmdbuf))) { + fprintf(stderr, "failed to allocate %d command buffers for the swap-chain\n", vksc_numimg); + return -1; + } + + cbinf.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; + cbinf.commandPool = cmdpool; + cbinf.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; + cbinf.commandBufferCount = vksc_numimg; + + if(vkAllocateCommandBuffers(vkdev, &cbinf, vksc_cmdbuf) != 0) { + fprintf(stderr, "failed to create %d command buffers for the swap-chain\n", vksc_numimg); + return -1; + } + return 0; +} static int eval_pdev_score(VkPhysicalDevice dev) { diff --git a/src/vk.h b/src/vk.h index f4187d3..cc58948 100644 --- a/src/vk.h +++ b/src/vk.h @@ -57,6 +57,9 @@ void vk_cleanup(void); int vk_reshape(int xsz, int ysz); +/* returns the image index, or -1 on failure. Pass optional semaphore to signal */ +int vk_next_image(VkSemaphore sem); + int vk_find_qfamily(unsigned int flags); VkQueue vk_getq_fam(int fam, int n); VkQueue vk_getq(unsigned int flags, int n); @@ -103,4 +106,11 @@ void vk_pipeln_blend(int pp, int enable); void vk_pipeln_blendfunc(int pp, int src, int dst); VkPipeline vk_pipeln(int pp); +VkShaderModule vk_load_shader(const char *fname); +void vk_free_shader(VkShaderModule sdr); + +VkSemaphore vk_create_sem(void); +void vk_free_sem(VkSemaphore sem); + + #endif /* VK_H_ */ -- 1.7.10.4