#include "model.h"
#include "bvh.h"
-typedef struct scene scene;
+typedef struct scene_context scene_context;
+typedef struct scene_vert scene_vert;
-struct scene
+#pragma pack(push,1)
+
+/* 32 byte vertexs, we don't care about the normals too much,
+ * maybe possible to bring down uv to i16s too */
+struct scene_vert
+{
+ v3f co; /* 3*32 */
+ v2f uv; /* 2*32 */
+ i8 norm[4]; /* 4*8 */
+ u16 flags; /* only for the cpu. its junk on the gpu */
+ u16 unused[3];
+};
+
+#pragma pack(pop)
+
+/*
+ * 1. this should probably be a CONTEXT based approach unlike this mess.
+ * take a bit of the mdl_context ideas and redo this header. its messed up
+ * pretty bad right now.
+ */
+
+struct scene_context
{
- mdl_vert *arrvertices;
+ scene_vert *arrvertices;
u32 *arrindices;
u32 vertex_count, indice_count,
mdl_submesh submesh;
};
-/* Initialize a scene description with bounded buffers */
-VG_STATIC scene *scene_init( void *lin_alloc, u32 max_verts, u32 max_indices )
+static u32 scene_mem_required( scene_context *ctx )
{
- u32 vertex_length = max_verts * sizeof(mdl_vert),
- index_length = max_indices * sizeof(u32),
- tot_size = sizeof(scene) + vertex_length + index_length;
+ u32 vertex_length = vg_align8(ctx->max_vertices * sizeof(scene_vert)),
+ index_length = vg_align8(ctx->max_indices * sizeof(u32));
- scene *pscene = vg_linear_alloc( lin_alloc, tot_size );
+ return vertex_length + index_length;
+}
+
+static
+void scene_init( scene_context *ctx, u32 max_vertices, u32 max_indices )
+{
+ ctx->vertex_count = 0;
+ ctx->indice_count = 0;
+ ctx->max_vertices = max_vertices;
+ ctx->max_indices = max_indices;
+ ctx->arrindices = NULL; /* must be filled out by user */
+ ctx->arrvertices = NULL;
- pscene->arrvertices = (mdl_vert *)(pscene+1);
- pscene->arrindices = (u32 *)( pscene->arrvertices + max_verts );
+ memset( &ctx->submesh, 0, sizeof(mdl_submesh) );
- pscene->vertex_count = 0;
- pscene->indice_count = 0;
- pscene->max_vertices = max_verts;
- pscene->max_indices = max_indices;
+ v3_fill( ctx->bbx[0], 999999.9f );
+ v3_fill( ctx->bbx[1], -999999.9f );
+}
- memset( &pscene->submesh, 0, sizeof(mdl_submesh) );
+void scene_supply_buffer( scene_context *ctx, void *buffer )
+{
+ u32 vertex_length = vg_align8( ctx->max_vertices * sizeof(scene_vert) );
- v3_fill( pscene->bbx[0], 999999.9f );
- v3_fill( pscene->bbx[1], -999999.9f );
+ ctx->arrvertices = buffer;
+ ctx->arrindices = (u32*)(((u8*)buffer) + vertex_length);
+}
- return pscene;
+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 );
+ v3_maxv( n, (v3f){ -127.0f, -127.0f, -127.0f }, n );
+ vert->norm[0] = n[0];
+ vert->norm[1] = n[1];
+ vert->norm[2] = n[2];
+ vert->norm[3] = blend * 127.0f;
}
/*
* Append a model into the scene with a given transform
*/
-VG_STATIC void scene_add_submesh( scene *pscene, mdl_context *mdl,
- mdl_submesh *sm, m4x3f transform )
+static void scene_add_mdl_submesh( scene_context *ctx, mdl_context *mdl,
+ mdl_submesh *sm, m4x3f transform )
{
- if( pscene->vertex_count + sm->vertex_count > pscene->max_vertices )
- {
- vg_error( "%u(current) + %u > %u\n", pscene->vertex_count,
- sm->vertex_count,
- pscene->max_vertices );
-
- vg_warn( "%p ... %p\n", pscene, sm );
- vg_fatal_exit_loop( "Scene vertex buffer overflow" );
+ if( ctx->vertex_count + sm->vertex_count > ctx->max_vertices ){
+ vg_fatal_error( "Scene vertex buffer overflow (%u exceeds %u)\n",
+ ctx->vertex_count + sm->vertex_count,
+ ctx->max_vertices );
}
- if( pscene->indice_count + sm->indice_count > pscene->max_indices )
- {
- vg_error( "%u(current) + %u > %u\n", pscene->indice_count,
- sm->indice_count,
- pscene->max_indices );
- vg_warn( "%p ... %p\n", pscene, sm );
-
- vg_fatal_exit_loop( "Scene index buffer overflow" );
+ if( ctx->indice_count + sm->indice_count > ctx->max_indices ){
+ vg_fatal_error( "Scene index buffer overflow (%u exceeds %u)\n",
+ ctx->indice_count + sm->indice_count,
+ ctx->max_indices );
}
- mdl_vert *src_verts = mdl_submesh_vertices( mdl, sm ),
- *dst_verts = &pscene->arrvertices[ pscene->vertex_count ];
+ mdl_vert *src_verts = mdl_arritm( &mdl->verts, sm->vertex_start );
+ scene_vert *dst_verts = &ctx->arrvertices[ ctx->vertex_count ];
- u32 *src_indices = mdl_submesh_indices( mdl, sm ),
- *dst_indices = &pscene->arrindices[ pscene->indice_count ];
+ u32 *src_indices = mdl_arritm( &mdl->indices, sm->indice_start ),
+ *dst_indices = &ctx->arrindices[ ctx->indice_count ];
/* Transform and place vertices */
boxf bbxnew;
- box_copy( sm->bbx, bbxnew );
- m4x3_transform_aabb( transform, bbxnew );
- box_concat( pscene->bbx, bbxnew );
+ box_init_inf( bbxnew );
+ m4x3_expand_aabb_aabb( transform, bbxnew, sm->bbx );
+ box_concat( ctx->bbx, bbxnew );
m3x3f normal_matrix;
m3x3_copy( transform, normal_matrix );
v3_normalize( normal_matrix[1] );
v3_normalize( normal_matrix[2] );
- for( u32 i=0; i<sm->vertex_count; i++ )
- {
- mdl_vert *pvert = &dst_verts[ i ],
- *src = &src_verts[ i ];
+ for( u32 i=0; i<sm->vertex_count; i++ ){
+ mdl_vert *src = &src_verts[i];
+ scene_vert *pvert = &dst_verts[i];
m4x3_mulv( transform, src->co, pvert->co );
- m3x3_mulv( normal_matrix, src->norm, pvert->norm );
+
+ v3f normal;
+ m3x3_mulv( normal_matrix, src->norm, normal );
+ scene_vert_pack_norm( pvert, normal, src->colour[0]*(1.0f/255.0f) );
- pvert->colour[0] = src->colour[0];
- pvert->colour[1] = src->colour[1];
- pvert->colour[2] = src->colour[2];
- pvert->colour[3] = src->colour[3];
v2_copy( src->uv, pvert->uv );
}
- for( u32 i=0; i<sm->indice_count; i++ )
- {
- dst_indices[i] = src_indices[i] + pscene->vertex_count;
+ u32 real_indices = 0;
+ for( u32 i=0; i<sm->indice_count/3; i++ ){
+ u32 *src = &src_indices[i*3],
+ *dst = &dst_indices[real_indices];
+
+ v3f ab, ac, tn;
+ v3_sub( src_verts[src[2]].co, src_verts[src[0]].co, ab );
+ v3_sub( src_verts[src[1]].co, src_verts[src[0]].co, ac );
+ v3_cross( ac, ab, tn );
+
+#if 0
+ if( v3_length2( tn ) <= 0.00001f )
+ continue;
+#endif
+
+ dst[0] = src[0] + ctx->vertex_count;
+ dst[1] = src[1] + ctx->vertex_count;
+ dst[2] = src[2] + ctx->vertex_count;
+
+ real_indices += 3;
}
- pscene->vertex_count += sm->vertex_count;
- pscene->indice_count += sm->indice_count;
+ if( real_indices != sm->indice_count )
+ vg_warn( "Zero area triangles in model\n" );
+ ctx->vertex_count += sm->vertex_count;
+ ctx->indice_count += real_indices;
}
/*
* One by one adders for simplified access (mostly procedural stuff)
*/
-VG_STATIC void scene_push_tri( scene *pscene, u32 tri[3] )
+static void scene_push_tri( scene_context *ctx, u32 tri[3] )
{
- if( pscene->indice_count + 3 > pscene->max_indices )
- vg_fatal_exit_loop( "Scene vertex buffer overflow" );
+ if( ctx->indice_count + 3 > ctx->max_indices )
+ vg_fatal_error( "Scene indice buffer overflow (%u exceeds %u)\n",
+ ctx->indice_count+3, ctx->max_indices );
- u32 *dst = &pscene->arrindices[ pscene->indice_count ];
+ u32 *dst = &ctx->arrindices[ ctx->indice_count ];
dst[0] = tri[0];
dst[1] = tri[1];
dst[2] = tri[2];
- pscene->indice_count += 3;
+ ctx->indice_count += 3;
}
-VG_STATIC void scene_push_vert( scene *pscene, mdl_vert *v )
+static void scene_push_vert( scene_context *ctx, scene_vert *v )
{
- if( pscene->vertex_count + 1 > pscene->max_vertices )
- vg_fatal_exit_loop( "Scene vertex buffer overflow" );
+ if( ctx->vertex_count + 1 > ctx->max_vertices )
+ vg_fatal_error( "Scene vertex buffer overflow (%u exceeds %u)\n",
+ ctx->vertex_count+1, ctx->max_vertices );
- mdl_vert *dst = &pscene->arrvertices[ pscene->vertex_count ];
+ scene_vert *dst = &ctx->arrvertices[ ctx->vertex_count ];
*dst = *v;
- pscene->vertex_count ++;
+ ctx->vertex_count ++;
}
-VG_STATIC void scene_copy_slice( scene *pscene, mdl_submesh *sm )
+static void scene_copy_slice( scene_context *ctx, mdl_submesh *sm )
{
- sm->indice_start = pscene->submesh.indice_start;
- sm->indice_count = pscene->indice_count - sm->indice_start;
+ sm->indice_start = ctx->submesh.indice_start;
+ sm->indice_count = ctx->indice_count - sm->indice_start;
- sm->vertex_start = pscene->submesh.vertex_start;
- sm->vertex_count = pscene->vertex_count - sm->vertex_start;
+ sm->vertex_start = ctx->submesh.vertex_start;
+ sm->vertex_count = ctx->vertex_count - sm->vertex_start;
- pscene->submesh.indice_start = pscene->indice_count;
- pscene->submesh.vertex_start = pscene->vertex_count;
+ ctx->submesh.indice_start = ctx->indice_count;
+ ctx->submesh.vertex_start = ctx->vertex_count;
}
-/* finalization: tightly pack data */
-__attribute__((warn_unused_result))
-VG_STATIC scene *scene_fix( void *lin_alloc, scene *pscene )
-{
- return pscene;
- u32 vertex_count = pscene->vertex_count,
- indice_count = pscene->indice_count,
- vertex_length = vertex_count * sizeof(mdl_vert),
- index_length = indice_count * sizeof(u32),
- tot_size = sizeof(scene) + vertex_length + index_length;
-
- /* copy down index data */
- void *dst_indices = pscene->arrvertices + vertex_length;
- memmove( dst_indices, pscene->arrindices, index_length );
-
- /* realloc */
- pscene = vg_linear_resize( lin_alloc, pscene, tot_size );
-
- pscene->arrvertices = (mdl_vert *)(pscene+1);
- pscene->arrindices = (u32 *)(pscene->arrvertices+vertex_count);
- pscene->max_vertices = vertex_count;
- pscene->max_indices = indice_count;
-
- return pscene;
+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;
}
-#if 0
-/* finalization: delete any offline buffers and reduce size */
-__attribute__((warn_unused_result))
-VG_STATIC scene *scene_free_offline_buffers( void *lin_alloc, scene *pscene )
+struct scene_upload_info{
+ scene_context *ctx;
+ glmesh *mesh;
+};
+
+static void async_scene_upload( void *payload, u32 size )
{
- u32 tot_size = sizeof(scene);
+ struct scene_upload_info *info = payload;
+
+ //assert( mesh->loaded == 0 );
+
+ glmesh *mesh = info->mesh;
+ scene_context *ctx = info->ctx;
+
+ glGenVertexArrays( 1, &mesh->vao );
+ glGenBuffers( 1, &mesh->vbo );
+ glGenBuffers( 1, &mesh->ebo );
+ glBindVertexArray( mesh->vao );
+
+ size_t stride = sizeof(scene_vert);
+
+ glBindBuffer( GL_ARRAY_BUFFER, mesh->vbo );
+ glBufferData( GL_ARRAY_BUFFER, ctx->vertex_count*stride,
+ ctx->arrvertices, GL_STATIC_DRAW );
- scene *src_scene = pscene;
- mdl_vert *src_verts = pscene->arrvertices;
- u32 *src_indices = pscene->arrindices;
+ glBindVertexArray( mesh->vao );
+ glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, mesh->ebo );
+ glBufferData( GL_ELEMENT_ARRAY_BUFFER, ctx->indice_count*sizeof(u32),
+ ctx->arrindices, GL_STATIC_DRAW );
+
+ /* 0: coordinates */
+ glVertexAttribPointer( 0, 3, GL_FLOAT, GL_FALSE, stride, (void*)0 );
+ glEnableVertexAttribArray( 0 );
+
+ /* 1: normal */
+ glVertexAttribPointer( 1, 4, GL_BYTE, GL_TRUE,
+ stride, (void *)offsetof(scene_vert, norm) );
+ glEnableVertexAttribArray( 1 );
- scene *dst_scene = vg_linear_resize( lin_alloc, pscene, tot_size );
- memcpy( dst_scene, src_scene, sizeof(scene) );
+ /* 2: uv */
+ glVertexAttribPointer( 2, 2, GL_FLOAT, GL_FALSE,
+ stride, (void *)offsetof(scene_vert, uv) );
+ glEnableVertexAttribArray( 2 );
- dst_scene->arrindices = NULL;
- dst_scene->arrvertices = NULL;
+ VG_CHECK_GL_ERR();
- return dst_scene;
+ mesh->indice_count = ctx->indice_count;
+ mesh->loaded = 1;
+
+ vg_info( "Scene upload ( XYZ_f32 UV_f32 XYZW_i8 )[ u32 ]\n" );
+ vg_info( " indices:%u\n", ctx->indice_count );
+ vg_info( " verts:%u\n", ctx->vertex_count );
+}
+
+static void scene_upload_async( scene_context *ctx, glmesh *mesh )
+{
+ vg_async_item *call = vg_async_alloc( sizeof(struct scene_upload_info) );
+
+ struct scene_upload_info *info = call->payload;
+ info->mesh = mesh;
+ info->ctx = ctx;
+
+ vg_async_dispatch( call, async_scene_upload );
}
-#endif
-VG_STATIC void scene_upload( scene *pscene, glmesh *mesh )
+static
+vg_async_item *scene_alloc_async( scene_context *scene, glmesh *mesh,
+ u32 max_vertices, u32 max_indices )
{
- mesh_upload( mesh,
- pscene->arrvertices, pscene->vertex_count,
- pscene->arrindices, pscene->indice_count );
+ scene_init( scene, max_vertices, max_indices );
+ u32 buf_size = scene_mem_required( scene );
+
+ u32 hdr_size = vg_align8(sizeof(struct scene_upload_info));
+ vg_async_item *call = vg_async_alloc( hdr_size + buf_size );
+
+ struct scene_upload_info *info = call->payload;
+
+ info->mesh = mesh;
+ info->ctx = scene;
- vg_info( "Scene upload\n" );
- vg_info( " indices:%u\n", pscene->indice_count );
- vg_info( " verts:%u\n", pscene->vertex_count );
+ void *buffer = ((u8*)call->payload)+hdr_size;
+ scene_supply_buffer( scene, buffer );
+
+ return call;
}
+
/*
* 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 *s = user;
- mdl_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
- *pb = &s->arrvertices[ s->arrindices[item_index*3+1] ],
- *pc = &s->arrvertices[ s->arrindices[item_index*3+2] ];
+ scene_context *s = user;
+ scene_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
+ *pb = &s->arrvertices[ s->arrindices[item_index*3+1] ],
+ *pc = &s->arrvertices[ s->arrindices[item_index*3+2] ];
box_addpt( bound, pa->co );
box_addpt( bound, pb->co );
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 *s = user;
- mdl_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
- *pb = &s->arrvertices[ s->arrindices[item_index*3+1] ],
- *pc = &s->arrvertices[ s->arrindices[item_index*3+2] ];
+ scene_context *s = user;
+ scene_vert *pa = &s->arrvertices[ s->arrindices[item_index*3+0] ],
+ *pb = &s->arrvertices[ s->arrindices[item_index*3+1] ],
+ *pc = &s->arrvertices[ s->arrindices[item_index*3+2] ];
+
+ #if 0
+
+ float min, max;
+ min = vg_minf( pa->co[axis], pb->co[axis] );
+ max = vg_maxf( pa->co[axis], pb->co[axis] );
+ min = vg_minf( min, pc->co[axis] );
+ max = vg_maxf( max, pc->co[axis] );
+
+ return (min+max) * 0.5f;
+
+ #else
return (pa->co[axis] + pb->co[axis] + pc->co[axis]) * (1.0f/3.0f);
+ #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 *s = user;
+ scene_context *s = user;
u32 *ti = &s->arrindices[ia*3];
u32 *tj = &s->arrindices[ib*3];
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 *s = user;
+ scene_context *s = user;
u32 idx = item_index*3;
- mdl_vert *pa = &s->arrvertices[ s->arrindices[ idx+0 ] ],
- *pb = &s->arrvertices[ s->arrindices[ idx+1 ] ],
- *pc = &s->arrvertices[ s->arrindices[ idx+2 ] ];
+ scene_vert *pa = &s->arrvertices[ s->arrindices[ idx+0 ] ],
+ *pb = &s->arrvertices[ s->arrindices[ idx+1 ] ],
+ *pc = &s->arrvertices[ s->arrindices[ idx+2 ] ];
vg_line( pa->co, pb->co, 0xff0000ff );
vg_line( pb->co, pc->co, 0xff0000ff );
vg_line( pc->co, pa->co, 0xff0000ff );
}
-VG_STATIC int scene_bh_ray( void *user, u32 index, v3f co,
- v3f dir, ray_hit *hit )
+static void scene_bh_closest( void *user, u32 index, v3f point, v3f closest )
{
- scene *s = user;
+ 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;
+ 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 *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,
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 *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 );
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