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-rw-r--r--demos/rend_compute.c231
1 files changed, 0 insertions, 231 deletions
diff --git a/demos/rend_compute.c b/demos/rend_compute.c
deleted file mode 100644
index f82836a..0000000
--- a/demos/rend_compute.c
+++ /dev/null
@@ -1,231 +0,0 @@
-#include <string.h>
-
-#ifdef DEBUG_MEMORY
-#define malloc(size) peak_debug_malloc_impl((size), __FILE__, __LINE__, __func__)
-#define realloc(ptr, size) peak_debug_realloc_impl((ptr), (size), __FILE__, __LINE__, __func__)
-#define free(ptr) peak_debug_free_impl((ptr), __FILE__, __LINE__, __func__)
-#endif
-
-#define PEAK_IMPLEMENTATION
-#include "../Rend/rend.h"
-#include "../Rend/rend.c"
-#include <stddef.h>
-
-float delta = 0;
-PeakWindow win;
-PeakEvent ev;
-
-bool vsync = true;
-
-#define PARTICLE_COUNT 1024 * 10
-#define GRID_WIDTH 512
-#define GRID_HEIGHT 512
-
-typedef struct {
- uint64_t particles;
- uint64_t src_grid;
- uint64_t dst_grid;
- uint32_t particle_count;
- uint32_t width;
- uint32_t height;
- float delta_time;
- uint32_t render_mode;
-} PushConstants;
-
-typedef struct Particle {
- float pos[2];
- float vel[2];
-} Particle;
-
-uint32_t pcg_hash(uint32_t seed) {
- uint32_t state = seed * 747796405u + 2891336453u;
- uint32_t word = ((state >> ((state >> 28u) + 4u)) ^ state) * 277803737u;
- return (word >> 22u) ^ word;
-}
-
-float cool_beans(uint32_t *seed) {
- *seed = pcg_hash(*seed);
- return (float) *seed / 4294967295.0;
-}
-
-static uint8_t *
-load_spv(const char *a, const char *b, unsigned long *size)
-{
- uint8_t *p = peak_file_alloc(a, size);
- if (p) return p;
- return peak_file_alloc(b, size);
-}
-
-int main() {
-
- if (!peak_init()) {
- PFATAL("Failed to init Peak!");
- return 1;
- }
-
- win = peak_window_open("demo", 800, 600, 0);
- if (!win.running) {
- PFATAL("Failed to open a window!");
- return 1;
- }
-
- // bindless setup
- RendBindingInfo bind_info = {0};
- RendRenderer renderer = rend_renderer_create(&win, REND_BACKEND_AUTO, NULL, vsync, &bind_info);
- if (!renderer) {
- PFATAL("Failed to create renderer!");
- peak_window_close(&win);
- peak_quit();
- return 1;
- }
-
- unsigned long particles_bytes = 0;
- uint8_t *particles_shader = load_spv("particle.spv", "demos/compute/particle.spv", &particles_bytes);
-
- unsigned long sand_bytes = 0;
- uint8_t *sand_shader = load_spv("sand.spv", "demos/compute/sand.spv", &sand_bytes);
-
- unsigned long vert_size = 0;
- uint8_t *vert = load_spv("vert.spv", "demos/compute/vert.spv", &vert_size);
-
- unsigned long frag_size = 0;
- uint8_t *frag = load_spv("frag.spv", "demos/compute/frag.spv", &frag_size);
-
- uint32_t seed = 0xC0FFEE;
-
- Particle *initial_particles = malloc(PARTICLE_COUNT * sizeof *initial_particles);
- for (int i = 0; i < PARTICLE_COUNT; i++) {
- initial_particles[i].pos[0] = cool_beans(&seed) * 2.0f - 1.0f;
- initial_particles[i].pos[1] = cool_beans(&seed) * 2.0f - 1.0f;
- initial_particles[i].vel[0] = cool_beans(&seed) * 0.4f - 0.2f;
- initial_particles[i].vel[1] = cool_beans(&seed) * 0.4f - 0.2f;
- }
-
- size_t buffer_size = PARTICLE_COUNT * sizeof(Particle);
- RendBuffer particle_buf = rend_buffer_create(renderer, buffer_size, REND_BUFFER_STORAGE, true);
- rend_buffer_write(renderer, &particle_buf, initial_particles, buffer_size, 0);
-
- size_t grid_buffer_size = GRID_WIDTH * GRID_HEIGHT * sizeof(uint32_t);
- uint32_t *initial_grid = calloc(GRID_WIDTH * GRID_HEIGHT, sizeof(uint32_t));
-
- for (int y = 0; y < 100; y++) {
- for (int x = 150; x < 362; x++) {
- initial_grid[y * GRID_WIDTH + x] = 1; // 1 = sand
- }
- }
-
- RendBuffer src_buf = rend_buffer_create(renderer, GRID_WIDTH * GRID_HEIGHT * sizeof(uint32_t), REND_BUFFER_STORAGE, false);
- RendBuffer dst_buf = rend_buffer_create(renderer, GRID_WIDTH * GRID_HEIGHT * sizeof(uint32_t), REND_BUFFER_STORAGE, false);
- rend_buffer_write(renderer, &src_buf, initial_grid, grid_buffer_size, 0);
- rend_buffer_write(renderer, &dst_buf, initial_grid, grid_buffer_size, 0);
-
- uint64_t particles_address = rend_buffer_address(&particle_buf);
-
- RendBuffer *src_grid = &src_buf;
- RendBuffer *dst_grid = &dst_buf;
-
- RendPushConstantInfo pc = { .offset = 0, .size = sizeof(PushConstants) };
- RendPipeline particle_compute = rend_pipeline_create_compute_spirv(renderer, particles_shader, particles_bytes, &pc, 1);
- RendPipeline sand_compute = rend_pipeline_create_compute_spirv(renderer, sand_shader, sand_bytes, &pc, 1);
- free(particles_shader);
- free(sand_shader);
-
- RendPipeline graphics_pipeline = rend_pipeline_create_graphics_bindless_spirv(renderer, vert, vert_size, frag, frag_size, &pc, 1, REND_POLYGON_MODE_FILL, REND_CULL_MODE_NONE, REND_TOPOLOGY_TRIANGLE_LIST, 0, true);
-
- free(vert);
- free(frag);
-
- float dt = 1.0f / 60.0f;
- uint64_t dt_ns = (uint64_t) (dt * NANOS_PER_SEC);
-
- uint32_t mode = 2;
- while (mode > 0) {
-
- uint64_t start = peak_get_time();
-
- PeakEvent ev;
- while (peak_window_epoll(&win, &ev)) {
- if (ev.type == PEAK_EVENT_WINDOW_CLOSE) {
- mode -= 1;
- break;
- }
- }
-
- if (rend_renderer_frame_begin(renderer)) {
-
- PushConstants pc = {0};
-
- if (mode == 2) {
- /*
- * Sand Simulation
- */
- pc.delta_time = dt;
- pc.width = GRID_WIDTH;
- pc.height = GRID_HEIGHT;
- pc.render_mode = 1;
- pc.src_grid = src_grid->gpu_address;
- pc.dst_grid = dst_grid->gpu_address;
-
- rend_pipeline_bind(sand_compute);
- rend_pipeline_push_constants(sand_compute, &pc, sizeof(pc));
-
- uint32_t x = (GRID_WIDTH + 15) / 16;
- uint32_t y = (GRID_HEIGHT + 15) / 16;
- rend_pipeline_dispatch(sand_compute, x, y, 1);
-
- RendBuffer *temp = src_grid;
- src_grid = dst_grid;
- dst_grid = temp;
-
- memset(src_grid->mapped_memory, 0, grid_buffer_size);
-
- } else {
- /*
- * Particles Simulation
- */
- pc.particles = particles_address;
- pc.delta_time = dt;
- pc.particle_count = PARTICLE_COUNT;
- pc.render_mode = 0;
-
- rend_pipeline_bind(particle_compute);
- rend_pipeline_push_constants(particle_compute, &pc, sizeof(pc));
- rend_pipeline_dispatch(particle_compute, (PARTICLE_COUNT + 255) / 256, 1, 1);
- }
-
- rend_renderer_render_pass_begin(renderer, 0.5f, 0.5f, 0.5f, 0.0f); {
- rend_pipeline_bind(graphics_pipeline);
- rend_pipeline_push_constants(graphics_pipeline, &pc, sizeof(pc));
-
- uint32_t vertex_count = (mode == 2) ? (6 * GRID_WIDTH * GRID_HEIGHT) : (6 * PARTICLE_COUNT);
- rend_pipeline_draw(graphics_pipeline, vertex_count, 1);
-
- } rend_renderer_render_pass_end(renderer);
-
- rend_renderer_frame_end(renderer, NULL);
- }
-
- uint64_t delta_ns = peak_get_time() - start;
- if (delta_ns < dt_ns) {
- peak_sleep_ns(dt_ns - delta_ns);
- }
- }
-
- free(initial_particles);
- free(initial_grid);
-
- rend_buffer_destroy(&particle_buf);
- rend_buffer_destroy(&src_buf);
- rend_buffer_destroy(&dst_buf);
-
- rend_renderer_destroy(renderer);
- rend_quit();
-
- peak_window_close(&win);
- peak_quit();
-
-#if DEBUG_MEMORY
- peak_debug_memory_report();
-#endif
- return 0;
-}
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