mrrrp

main_layer.c

@@ -0,0 +1,99 @@
+#include "src/kitty.h"
+#include "src/matrix.h"
+#include "src/types.h"
+#include "src/util.h"
+#include "src/wayland.h"
+#include <string.h>
+#include <time.h>
+
+#define INSTANCE_COUNT 1000
+#define TRIG_VERTEX_COUNT 6
+struct Vertex trig_vertices[TRIG_VERTEX_COUNT] = {
+    (struct Vertex){(struct Vec2){.x = -0.5f, .y = -0.5f},
+                    (struct Vec3){1.0f, 0.0f, 1.0f}},
+    (struct Vertex){(struct Vec2){.x = 0.5f, .y = -0.5f},
+                    (struct Vec3){1.0f, 0.0f, 0.0f}},
+    (struct Vertex){(struct Vec2){.x = 0.5f, .y = 0.5f},
+                    (struct Vec3){1.0f, 0.0f, 1.0f}},
+    (struct Vertex){(struct Vec2){.x = -0.5f, .y = -0.5f},
+                    (struct Vec3){1.0f, 0.0f, 1.0f}},
+    (struct Vertex){(struct Vec2){.x = 0.5f, .y = 0.5f},
+                    (struct Vec3){1.0f, 0.0f, 1.0f}},
+    (struct Vertex){(struct Vec2){.x = -0.5f, .y = 0.5f},
+                    (struct Vec3){0.0f, 0.0f, 1.0f}},
+};
+struct TrigUBO {
+  struct mat3x3 view;
+  struct mat3x3 proj;
+};
+
+int main() {
+  struct Vk *vk;
+  struct cat_Wl *state = cat_init_wl_layer("meooow", &vk);
+
+  struct Vec2 vel[INSTANCE_COUNT];
+  struct Vec2 pos[INSTANCE_COUNT];
+  float rot[INSTANCE_COUNT];
+  struct Kitty *kitty = kitty_make(NULL);
+  kitty_set_vertex_shader(kitty, "./res/shaders/vert.spv");
+  kitty_set_fragment_shader(kitty, "./res/shaders/frag.spv");
+  kitty_set_vertex_buffer(kitty, trig_vertices, TRIG_VERTEX_COUNT,
+                          sizeof(struct Vertex));
+  kitty_add_vertex_buffer_format(kitty, VK_FORMAT_R32G32_SFLOAT);
+  kitty_add_vertex_buffer_format(kitty, VK_FORMAT_R32G32B32_SFLOAT);
+  kitty_attatch_ubo(kitty, sizeof(struct TrigUBO));
+  kitty_attatch_ubo(kitty, sizeof(struct mat3x3) * INSTANCE_COUNT);
+  kitty_attatch_image(kitty, "./res/images/neocat.png");
+  uint32_t instance_buffer[INSTANCE_COUNT] = {0};
+  for (int i = 0; i < INSTANCE_COUNT; i++) {
+    instance_buffer[i] = i;
+    rot[i] = randf() * 2.0f * PI;
+    pos[i] = (struct Vec2){randf(), randf()};
+    vel[i] = vec2_mul(
+        vec2_normalize((struct Vec2){randf() - 0.5f, randf() - 0.5f}), 0.2f);
+    /* trig->vel[i] = (struct Vec2){1.0f, 0.0f}; */
+  }
+  kitty_add_instance_buffer(kitty, instance_buffer, INSTANCE_COUNT,
+                            sizeof(uint32_t));
+  kitty_add_instance_buffer_format(kitty, VK_FORMAT_R32_UINT);
+
+  kitty_finalise(vk, kitty);
+
+  float delta_secs = 1.0f / 1000.0f;
+  while (!cat_wl_should_close(state)) {
+    struct TrigUBO ubo = {0};
+    ubo.view = multiply3x3(translate3x3((struct Vec2){-1.5f, -0.5f}),
+                           scale3x3((struct Vec2){1.0f, 1.0f}));
+    ubo.proj =
+        scale3x3((struct Vec2){1.f, (float)vk->width / (float)vk->heigh});
+    kitty_set_next_ubo(vk, kitty, 0, &ubo);
+
+    struct mat3x3 *model = kitty_get_next_ubo_pointer(vk, kitty, 1);
+    for (int i = 0; i < INSTANCE_COUNT; i++) {
+      pos[i] = vec2_add(pos[i], vec2_mul(vel[i], delta_secs));
+      rot[i] += delta_secs;
+      if (pos[i].x < 0 || pos[i].x > 2.5) {
+        vel[i].x = -vel[i].x;
+      }
+      if (pos[i].y < -0.5 || pos[i].y > 2) {
+        vel[i].y = -vel[i].y;
+      }
+      model[i] = IDENT3x3;
+      model[i] = multiply3x3(model[i], translate3x3(pos[i]));
+      model[i] = multiply3x3(model[i], rotate3x3(rot[i]));
+      model[i] = multiply3x3(model[i], scale3x3((struct Vec2){0.1f, 0.1f}));
+    }
+    cat_wl_draw(state);
+    struct timespec t = {
+        .tv_sec = 0,
+        .tv_nsec = 10000000,
+    };
+    nanosleep(&t, NULL);
+  }
+
+  kitty_free(vk, kitty);
+  cat_uninit_wl(state);
+
+  state = NULL;
+  vk = NULL;
+}