X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=scene.h;h=d8fac1ad524a05672feabee916237ddfbeac8acf;hb=refs%2Fheads%2Frigidbody;hp=83badb2fbca423444213dc3825af14e633bf25a3;hpb=1a40e653040837e47a4aba82d6b9f9800901fd64;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/scene.h b/scene.h
index 83badb2..d8fac1a 100644
--- a/scene.h
+++ b/scene.h
@@ -17,7 +17,8 @@ struct scene_vert
    v3f co;        /* 3*32 */
    v2f uv;        /* 2*32 */
    i8  norm[4];   /* 4*8 */
-   u16 unused[4];
+   u16 flags; /* only for the cpu. its junk on the gpu */
+   u16 unused[3];
 };
 
 #pragma pack(pop)
@@ -40,7 +41,7 @@ struct scene_context
    mdl_submesh submesh;
 };
 
-VG_STATIC u32 scene_mem_required( scene_context *ctx )
+static u32 scene_mem_required( scene_context *ctx )
 {
    u32 vertex_length = vg_align8(ctx->max_vertices * sizeof(scene_vert)),
        index_length  = vg_align8(ctx->max_indices  * sizeof(u32));
@@ -48,7 +49,7 @@ VG_STATIC u32 scene_mem_required( scene_context *ctx )
    return vertex_length + index_length;
 }
 
-VG_STATIC 
+static 
 void scene_init( scene_context *ctx, u32 max_vertices, u32 max_indices )
 {
    ctx->vertex_count = 0;
@@ -72,8 +73,7 @@ void scene_supply_buffer( scene_context *ctx, void *buffer )
    ctx->arrindices  = (u32*)(((u8*)buffer) + vertex_length);
 }
 
-VG_STATIC void scene_vert_pack_norm( scene_vert *vert, v3f norm )
-{
+static void scene_vert_pack_norm( scene_vert *vert, v3f norm, f32 blend ){
    v3f n;
    v3_muls( norm, 127.0f, n );
    v3_minv( n, (v3f){  127.0f,  127.0f,  127.0f }, n );
@@ -81,13 +81,13 @@ VG_STATIC void scene_vert_pack_norm( scene_vert *vert, v3f norm )
    vert->norm[0] = n[0];
    vert->norm[1] = n[1];
    vert->norm[2] = n[2];
-   vert->norm[3] = 0;  /* free byte :D */
+   vert->norm[3] = blend * 127.0f;
 }
 
 /* 
  * Append a model into the scene with a given transform
  */
-VG_STATIC void scene_add_mdl_submesh( scene_context *ctx, mdl_context *mdl, 
+static void scene_add_mdl_submesh( scene_context *ctx, mdl_context *mdl, 
                                       mdl_submesh *sm, m4x3f transform )
 {
    if( ctx->vertex_count + sm->vertex_count > ctx->max_vertices ){
@@ -128,7 +128,7 @@ VG_STATIC void scene_add_mdl_submesh( scene_context *ctx, mdl_context *mdl,
 
       v3f normal;
       m3x3_mulv( normal_matrix, src->norm, normal );
-      scene_vert_pack_norm( pvert, normal );
+      scene_vert_pack_norm( pvert, normal, src->colour[0]*(1.0f/255.0f) );
       
       v2_copy( src->uv, pvert->uv );
    }
@@ -165,7 +165,7 @@ VG_STATIC void scene_add_mdl_submesh( scene_context *ctx, mdl_context *mdl,
 /*
  * One by one adders for simplified access (mostly procedural stuff)
  */
-VG_STATIC void scene_push_tri( scene_context *ctx, u32 tri[3] )
+static void scene_push_tri( scene_context *ctx, u32 tri[3] )
 {
    if( ctx->indice_count + 3 > ctx->max_indices )
       vg_fatal_error( "Scene indice buffer overflow (%u exceeds %u)\n",
@@ -180,7 +180,7 @@ VG_STATIC void scene_push_tri( scene_context *ctx, u32 tri[3] )
    ctx->indice_count += 3;
 }
 
-VG_STATIC void scene_push_vert( scene_context *ctx, scene_vert *v )
+static void scene_push_vert( scene_context *ctx, scene_vert *v )
 {
    if( ctx->vertex_count + 1 > ctx->max_vertices )
       vg_fatal_error( "Scene vertex buffer overflow (%u exceeds %u)\n",
@@ -192,7 +192,7 @@ VG_STATIC void scene_push_vert( scene_context *ctx, scene_vert *v )
    ctx->vertex_count ++;
 }
 
-VG_STATIC void scene_copy_slice( scene_context *ctx, mdl_submesh *sm )
+static void scene_copy_slice( scene_context *ctx, mdl_submesh *sm )
 {
    sm->indice_start = ctx->submesh.indice_start;
    sm->indice_count = ctx->indice_count - sm->indice_start;
@@ -204,12 +204,18 @@ VG_STATIC void scene_copy_slice( scene_context *ctx, mdl_submesh *sm )
    ctx->submesh.vertex_start = ctx->vertex_count;
 }
 
+static void scene_set_vertex_flags( scene_context *ctx, 
+                                       u32 start, u32 count, u16 flags ){
+   for( u32 i=0; i<count; i++ )
+      ctx->arrvertices[ start + i ].flags = flags;
+}
+
 struct scene_upload_info{
    scene_context *ctx;
    glmesh *mesh;
 };
 
-VG_STATIC void async_scene_upload( void *payload, u32 size )
+static void async_scene_upload( void *payload, u32 size )
 {
    struct scene_upload_info *info = payload;
 
@@ -258,7 +264,7 @@ VG_STATIC void async_scene_upload( void *payload, u32 size )
    vg_info( "   verts:%u\n",   ctx->vertex_count );
 }
 
-VG_STATIC void scene_upload_async( scene_context *ctx, glmesh *mesh )
+static void scene_upload_async( scene_context *ctx, glmesh *mesh )
 {
    vg_async_item *call = vg_async_alloc( sizeof(struct scene_upload_info) );
 
@@ -269,7 +275,7 @@ VG_STATIC void scene_upload_async( scene_context *ctx, glmesh *mesh )
    vg_async_dispatch( call, async_scene_upload );
 }
 
-VG_STATIC
+static
 vg_async_item *scene_alloc_async( scene_context *scene, glmesh *mesh,
                                   u32 max_vertices, u32 max_indices )
 {
@@ -295,7 +301,7 @@ vg_async_item *scene_alloc_async( scene_context *scene, glmesh *mesh,
  * BVH implementation
  */
 
-VG_STATIC void scene_bh_expand_bound( void *user, boxf bound, u32 item_index )
+static void scene_bh_expand_bound( void *user, boxf bound, u32 item_index )
 {
    scene_context *s = user;
    scene_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
@@ -307,7 +313,7 @@ VG_STATIC void scene_bh_expand_bound( void *user, boxf bound, u32 item_index )
   box_addpt( bound, pc->co );
 }
 
-VG_STATIC float scene_bh_centroid( void *user, u32 item_index, int axis )
+static float scene_bh_centroid( void *user, u32 item_index, int axis )
 {
    scene_context *s = user;
    scene_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
@@ -330,7 +336,7 @@ VG_STATIC float scene_bh_centroid( void *user, u32 item_index, int axis )
    #endif
 }
 
-VG_STATIC void scene_bh_swap( void *user, u32 ia, u32 ib )
+static void scene_bh_swap( void *user, u32 ia, u32 ib )
 {
    scene_context *s = user;
 
@@ -351,7 +357,7 @@ VG_STATIC void scene_bh_swap( void *user, u32 ia, u32 ib )
    tj[2] = temp[2];
 }
 
-VG_STATIC void scene_bh_debug( void *user, u32 item_index )
+static void scene_bh_debug( void *user, u32 item_index )
 {
    scene_context *s = user;
    u32 idx = item_index*3;
@@ -364,30 +370,7 @@ VG_STATIC void scene_bh_debug( void *user, u32 item_index )
    vg_line( pc->co, pa->co, 0xff0000ff );
 }
 
-VG_STATIC int scene_bh_ray( void *user, u32 index, v3f co, 
-                            v3f dir, ray_hit *hit )
-{
-   scene_context *s = user;
-   v3f positions[3];
-   
-   u32 *tri = &s->arrindices[ index*3 ];
-
-   for( int i=0; i<3; i++ )
-      v3_copy( s->arrvertices[tri[i]].co, positions[i] );
-   
-   float t;
-   if(ray_tri( positions, co, dir, &t )){
-      if( t < hit->dist ){
-         hit->dist = t;
-         hit->tri = tri;
-         return 1;
-      }
-   }
-
-   return 0;
-}
-
-VG_STATIC void scene_bh_closest( void *user, u32 index, v3f point, v3f closest )
+static void scene_bh_closest( void *user, u32 index, v3f point, v3f closest )
 {
    scene_context *s = user;
 
@@ -399,25 +382,47 @@ VG_STATIC void scene_bh_closest( void *user, u32 index, v3f point, v3f closest )
    closest_on_triangle_1( point, positions, closest );
 }
 
-VG_STATIC bh_system bh_system_scene = 
+static bh_system bh_system_scene = 
 {
    .expand_bound = scene_bh_expand_bound,
    .item_centroid = scene_bh_centroid,
    .item_closest = scene_bh_closest,
    .item_swap = scene_bh_swap,
    .item_debug = scene_bh_debug,
-   .cast_ray = scene_bh_ray
+   .system_type = 0x1
 };
 
 /*
  * An extra step is added onto the end to calculate the hit normal
  */
-VG_STATIC int scene_raycast( scene_context *s, bh_tree *bh, 
-                             v3f co, v3f dir, ray_hit *hit )
+static int scene_raycast( scene_context *s, bh_tree *bh, 
+                             v3f co, v3f dir, ray_hit *hit, u16 ignore )
 {
-   int count = bh_ray( bh, co, dir, hit );
+   hit->tri = NULL;
+
+   bh_iter it;
+   bh_iter_init_ray( 0, &it, co, dir, hit->dist );
+   i32 idx;
+
+   while( bh_next( bh, &it, &idx ) ){
+      u32 *tri = &s->arrindices[ idx*3 ];
+
+      if( s->arrvertices[tri[0]].flags & ignore )  continue;
+
+      v3f vs[3];
+      for( u32 i=0; i<3; i++ )
+         v3_copy( s->arrvertices[tri[i]].co, vs[i] );
+      
+      f32 t;
+      if( ray_tri( vs, co, dir, &t, 0 ) ){
+         if( t < hit->dist ){
+            hit->dist = t;
+            hit->tri = tri;
+         }
+      }
+   }
 
-   if( count ){
+   if( hit->tri ){
       v3f v0, v1;
       
       float *pa = s->arrvertices[hit->tri[0]].co,
@@ -431,10 +436,10 @@ VG_STATIC int scene_raycast( scene_context *s, bh_tree *bh,
       v3_muladds( co, dir, hit->dist, hit->pos );
    }
 
-   return count;
+   return hit->tri?1:0;
 }
 
-VG_STATIC bh_tree *scene_bh_create( void *lin_alloc, scene_context *s )
+static bh_tree *scene_bh_create( void *lin_alloc, scene_context *s )
 {
    u32 triangle_count = s->indice_count / 3;
    return bh_create( lin_alloc, &bh_system_scene, s, triangle_count, 2 );