1 files changed, 47 insertions, 11 deletions

diff --git a/src/render/immdraw.c b/src/render/immdraw.c
index 142087a..a097f90 100644
--- a/src/render/immdraw.c
+++ b/src/render/immdraw.c
@@ -3,28 +3,29 @@
 #include "file.h"
 #include "log.h"
 #include "maths.h"
+#include "maths_types.h"
 #include "primitives.h"
 #include "ral_common.h"
 #include "ral_impl.h"
 #include "ral_types.h"
 #include "render.h"
+#include "render_types.h"
 #include "shader_layouts.h"
 
-// Forward declares
-void Immdraw_Primitive(Transform tf, f32 size, Vec4 colour, bool wireframe, Mesh mesh);
-
 void Immdraw_Init(Immdraw_Storage* storage) {
   INFO("Immediate drawing initialisation");
 
   // Meshes
   Geometry sphere_geo = Geo_CreateUVsphere(1.0, 16, 16);
-  storage->sphere = Mesh_Create(&sphere_geo, false);
+  storage->sphere = Mesh_Create(&sphere_geo, true);
 
   Geometry cube_geo = Geo_CreateCuboid(f32x3(1.0, 1.0, 1.0));
-  storage->cube = Mesh_Create(&cube_geo, false);
+  storage->cube = Mesh_Create(&cube_geo, true);
 
   Geometry plane_geo = Geo_CreatePlane(f32x2(1.0, 1.0));
-  storage->plane = Mesh_Create(&plane_geo, false);
+  storage->plane = Mesh_Create(&plane_geo, true);
+
+  storage->bbox = GenBboxMesh();
 
   // Pipeline / material
   VertexDescription vertex_desc = {
@@ -64,20 +65,27 @@ void Immdraw_Shutdown(Immdraw_Storage* storage) {
 void Immdraw_Sphere(Transform tf, Vec4 colour, bool wireframe) {
   TRACE("Draw sphere");
   Immdraw_Storage* imm = Render_GetImmdrawStorage();
-  Immdraw_Primitive(tf, 1.0, colour, wireframe, imm->sphere);
+  Immdraw_Primitive(tf, CEL_TRI, 1.0, colour, wireframe, imm->sphere);
 }
 void Immdraw_Cuboid(Transform tf, Vec4 colour, bool wireframe) {
   TRACE("Draw cube");
   Immdraw_Storage* imm = Render_GetImmdrawStorage();
-  Immdraw_Primitive(tf, 1.0, colour, wireframe, imm->cube);
+  Immdraw_Primitive(tf, CEL_TRI, 1.0, colour, wireframe, imm->cube);
 }
 void Immdraw_Plane(Transform tf, Vec4 colour, bool wireframe) {
   TRACE("Draw plane");
   Immdraw_Storage* imm = Render_GetImmdrawStorage();
-  Immdraw_Primitive(tf, 1.0, colour, wireframe, imm->plane);
+  Immdraw_Primitive(tf, CEL_TRI, 1.0, colour, wireframe, imm->plane);
+}
+
+PUB void Immdraw_Bbox(Transform tf, Vec4 colour, bool wireframe) {
+  TRACE("Draw bbox");
+  Immdraw_Storage* imm = Render_GetImmdrawStorage();
+  Immdraw_Primitive(tf, CEL_LINE, 1.0, colour, wireframe, imm->bbox);
 }
 
-void Immdraw_Primitive(Transform tf, f32 size, Vec4 colour, bool wireframe, Mesh mesh) {
+void Immdraw_Primitive(Transform tf, PrimitiveTopology topology, f32 size, Vec4 colour,
+                       bool wireframe, Mesh mesh) {
   Immdraw_Storage* imm = Render_GetImmdrawStorage();
   GPU_CmdEncoder* enc = GPU_GetDefaultEncoder();
 
@@ -115,8 +123,36 @@ void Immdraw_Primitive(Transform tf, f32 size, Vec4 colour, bool wireframe, Mesh
   // draw call
   GPU_EncodeSetVertexBuffer(enc, mesh.vertex_buffer);
   GPU_EncodeSetIndexBuffer(enc, mesh.index_buffer);
-  GPU_EncodeDrawIndexed(enc, mesh.geometry.index_count);
+  GPU_EncodeDrawIndexed(enc, topology, mesh.geometry.index_count);
 
   // end renderpass
   GPU_CmdEncoder_EndRender(enc);
 }
+
+Mesh GenBboxMesh() {
+  Vertex_darray* vertices = Vertex_darray_new(8);
+  u32_darray* indices = u32_darray_new(24);
+
+  // normals & uvs dont matter
+  VERT_3D(vertices, FRONT_BOT_LEFT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, FRONT_BOT_RIGHT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, BACK_BOT_LEFT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, BACK_BOT_RIGHT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, FRONT_TOP_LEFT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, FRONT_TOP_RIGHT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, BACK_TOP_LEFT, VEC3_NEG_Z, vec2(0, 0));
+  VERT_3D(vertices, BACK_TOP_RIGHT, VEC3_NEG_Z, vec2(0, 0));
+
+  u32 line_indices[24] = { 0, 1, 2, 3, 0, 2, 1, 3, 4, 5, 6, 7, 4, 6, 5, 7, 0, 4, 1, 5, 2, 6, 3, 7 };
+  for (u32 i = 0; i < 24; i++) {
+    u32_darray_push(indices, line_indices[i]);
+  }
+
+  Geometry geo = { .format = VERTEX_STATIC_3D,
+                   .has_indices = true,
+                   .index_count = indices->len,
+                   .vertices = vertices,
+                   .indices = indices };
+
+  return Mesh_Create(&geo, true);
+}
\ No newline at end of file