Merge branch 'cel-60-scaffold-vulkan' into cel-67-load-animation-data-from-gltf

1 files changed, 147 insertions, 0 deletions

diff --git a/src/maths/primitives.h b/src/maths/primitives.h
new file mode 100644
index 0000000..b7fefa0
--- /dev/null
+++ b/src/maths/primitives.h
@@ -0,0 +1,147 @@
+#pragma once
+
+#include <assert.h>
+#include <stdlib.h>
+#include "core.h"
+#include "maths.h"
+#include "render_types.h"
+
+static const vec3 BACK_BOT_LEFT = (vec3){ 0, 0, 0 };
+static const vec3 BACK_BOT_RIGHT = (vec3){ 1, 0, 0 };
+static const vec3 BACK_TOP_LEFT = (vec3){ 0, 1, 0 };
+static const vec3 BACK_TOP_RIGHT = (vec3){ 1, 1, 0 };
+static const vec3 FRONT_BOT_LEFT = (vec3){ 0, 0, 1 };
+static const vec3 FRONT_BOT_RIGHT = (vec3){ 1, 0, 1 };
+static const vec3 FRONT_TOP_LEFT = (vec3){ 0, 1, 1 };
+static const vec3 FRONT_TOP_RIGHT = (vec3){ 1, 1, 1 };
+
+static mesh prim_cube_mesh_create() {
+  mesh cube = { 0 };
+  cube.vertices = vertex_darray_new(36);
+
+  // back faces
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_Z, .uv = (vec2){ 0, 1 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_TOP_LEFT, .normal = VEC3_NEG_Z, .uv = (vec2){ 0, 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_TOP_RIGHT, .normal = VEC3_NEG_Z, .uv = (vec2){ 1, 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_TOP_RIGHT, .normal = VEC3_NEG_Z, .uv = (vec2){ 1, 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_RIGHT, .normal = VEC3_NEG_Z, .uv = (vec2){ 1,1 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_Z, .uv = (vec2){ 0, 1 } });
+
+  // front faces
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_BOT_LEFT, .normal = VEC3_Z, .uv = (vec2){ 0, 1} });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_Z, .uv = (vec2){ 1, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_LEFT, .normal = VEC3_Z, .uv = (vec2){ 0, 0} });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_BOT_LEFT, .normal = VEC3_Z, .uv = (vec2){ 0, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_BOT_RIGHT, .normal = VEC3_Z, .uv = (vec2){ 1, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_Z, .uv = (vec2){ 1, 0 } });
+
+  // top faces
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_TOP_LEFT, .normal = VEC3_Y, .uv = (vec2){ 0, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_LEFT, .normal = VEC3_Y, .uv = (vec2){ 0, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_Y, .uv = (vec2){ 1, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_TOP_LEFT, .normal = VEC3_Y, .uv = (vec2){ 0, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_Y, .uv = (vec2){ 1, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_TOP_RIGHT, .normal = VEC3_Y, .uv = (vec2){ 1, 0 } });
+
+  // bottom faces
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_BOT_RIGHT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_BOT_LEFT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_RIGHT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_BOT_RIGHT, .normal = VEC3_NEG_Y, .uv = (vec2){ 0 } });
+
+  // right faces
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_X, .uv = (vec2){ 0, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_BOT_RIGHT, .normal = VEC3_X, .uv = (vec2){ 1, 1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_TOP_RIGHT, .normal = VEC3_X, .uv = (vec2){ 1, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = BACK_BOT_RIGHT, .normal = VEC3_X, .uv = (vec2){ 1,1 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_TOP_RIGHT, .normal = VEC3_X, .uv = (vec2){ 0, 0 } });
+  vertex_darray_push(cube.vertices,
+                     (vertex){ .position = FRONT_BOT_RIGHT, .normal = VEC3_X, .uv = (vec2){ 0, 1 } });
+
+  // left faces
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_TOP_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_TOP_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = BACK_BOT_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_BOT_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+  vertex_darray_push(
+      cube.vertices,
+      (vertex){ .position = FRONT_TOP_LEFT, .normal = VEC3_NEG_X, .uv = (vec2){ 0 } });
+
+  cube.indices_len = cube.vertices->len;
+  cube.indices = malloc(sizeof(u32) * cube.indices_len);
+
+  for (u32 i = 0; i < cube.indices_len; i++) {
+    cube.indices[i] = i;
+  }
+
+  cube.has_indices = true;
+
+  return cube;
+}
+
+/** @brief create a new model with the shape of a cube */
+static model_handle prim_cube_new(core* core) {
+  model model = { 0 };
+  mesh cube = prim_cube_mesh_create();
+
+  mesh_darray_push(model.meshes, cube);
+  assert(mesh_darray_len(model.meshes) == 1);
+
+  u32 index = (u32)model_darray_len(core->models);
+  model_darray_push_copy(core->models, &model);
+  return (model_handle){ .raw = index };
+}
\ No newline at end of file