From 44b3bf3a7da0569cef9a7ea1ec6a5383f338730e Mon Sep 17 00:00:00 2001
From: John Alanbrook <john@pockle.world>
Date: Mon, 6 May 2024 21:59:22 -0500
Subject: [PATCH] Move primitive support to javascript

---
 Makefile                            |   2 +-
 scripts/base.js                     |   2 +-
 scripts/engine.js                   |   2 -
 source/engine/3d/model.c            | 191 ++++++++++++++++++------
 source/engine/3d/model.h            |  27 +++-
 source/engine/debug/debugdraw.c     |  11 --
 source/engine/font.c                |   2 -
 source/engine/jsffi.c               | 215 ++++++++++++++++++++------
 source/engine/jsffi.h               |   1 +
 source/engine/particle.c            | 224 +++++++---------------------
 source/engine/particle.h            |  29 ++--
 source/engine/render.c              |  89 -----------
 source/engine/render.h              |   2 +-
 source/engine/simplex.h             |  18 +--
 source/engine/yugine.c              |   1 -
 source/shaders/bezier.sglsl         |  19 ---
 source/shaders/billboardfrag.glsl   |   3 -
 source/shaders/billboardvertex.glsl |  11 --
 source/shaders/btdebugfrag.glsl     |   9 --
 source/shaders/btdebugvert.glsl     |  17 ---
 source/shaders/diffuse.sglsl        | 136 -----------------
 source/shaders/particle.sglsl       |  44 ------
 22 files changed, 410 insertions(+), 645 deletions(-)
 delete mode 100644 source/shaders/bezier.sglsl
 delete mode 100644 source/shaders/billboardfrag.glsl
 delete mode 100644 source/shaders/billboardvertex.glsl
 delete mode 100644 source/shaders/btdebugfrag.glsl
 delete mode 100644 source/shaders/btdebugvert.glsl
 delete mode 100644 source/shaders/diffuse.sglsl
 delete mode 100644 source/shaders/particle.sglsl

diff --git a/Makefile b/Makefile
index 6148c6e..f1e9271 100755
--- a/Makefile
+++ b/Makefile
@@ -101,7 +101,7 @@ else ifeq ($(OS), IOS)
 	LDFLAGS += -isysroot $(SDK_PATH) -miphoneos-version-min=13.0
 	LDFLAGS += -framework Foundation -framework UIKit -framework AudioToolbox -framework Metal -framework MetalKit -framework AVFoundation
 	CXXFLAGS += -std=c++11
-	CFLAGS += -x objective-c
+	CFLAGS += -x objective-c -DIOS
 	INFO :=$(INFO)_ios
 else ifeq ($(OS), wasm) # Then WEB
   OS := Web
diff --git a/scripts/base.js b/scripts/base.js
index f38ea4c..43a2ac6 100644
--- a/scripts/base.js
+++ b/scripts/base.js
@@ -1605,10 +1605,10 @@ yaml.tojson = function(yaml)
   yaml = yaml.replace(/\s/g, '');
   yaml = yaml.replace(/,}/g, '}');
   yaml = yaml.replace(/,]/g, ']');
+  yaml = yaml.replace(/,"[^"]+"\:,/, ',');
   return yaml; 
 }
 
-
 return {
   convert,
   time,
diff --git a/scripts/engine.js b/scripts/engine.js
index 6ce1609..e6b4cd6 100644
--- a/scripts/engine.js
+++ b/scripts/engine.js
@@ -309,7 +309,6 @@ function process()
   frame_t = profile.secs(profile.now());
   
   prosperon.appupdate(dt);
-  prosperon.emitters_step(dt);
   input.procdown();
   
   if (sim.mode === "play" || sim.mode === "step") {
@@ -342,7 +341,6 @@ function process()
     render.sprite_flush();                
   });
   render.sprite_flush();*/
-  render.emitters(); // blits emitters
   prosperon.draw(); // draw calls
   debug.draw(); // calls needed debugs
   render.flush();
diff --git a/source/engine/3d/model.c b/source/engine/3d/model.c
index 3bcc4cb..0dfe3ff 100644
--- a/source/engine/3d/model.c
+++ b/source/engine/3d/model.c
@@ -19,6 +19,8 @@
 #include <string.h>
 #include "yugine.h"
 
+#include "jsffi.h"
+
 #include "texture.h"
 
 #include "sokol/sokol_gfx.h"
@@ -40,14 +42,6 @@ cgltf_attribute *get_attr_type(cgltf_primitive *p, cgltf_attribute_type t)
   return NULL;
 }
 
-unsigned short pack_short_texcoord(float x, float y)
-{
-  unsigned short s;
-  char xc = x*255;
-  char yc = y*255;
-  return (((unsigned short)yc) << 8) | xc;
-}
-
 unsigned short pack_short_tex(float c) { return c * USHRT_MAX; }
 
 uint32_t pack_int10_n2(float *norm)
@@ -81,12 +75,16 @@ void mesh_add_material(primitive *prim, cgltf_material *mat)
      pmat->diffuse = texture_from_file("icons/moon.gif"); 
 }
 
-sg_buffer texcoord_floats(float *f, int verts, int comp)
+sg_buffer texcoord_floats(float *f, int n)
 {
-  int n = verts*comp;
   unsigned short packed[n];
-  for (int i = 0; i < n; i++)
-    packed[i] = pack_short_tex(f[i]);
+  for (int i = 0; i < n; i++) {
+    float v = f[i];
+    if (v < 0) v = 0;
+    if (v > 1) v = 1;
+    packed[i] = pack_short_tex(v);
+    printf("val: %g, packed: %u\n", v, packed[i]);
+  }
 
   return sg_make_buffer(&(sg_buffer_desc){
     .data = SG_RANGE(packed),
@@ -94,10 +92,43 @@ sg_buffer texcoord_floats(float *f, int verts, int comp)
   });
 }
 
-sg_buffer normal_floats(float *f, int verts, int comp)
+sg_buffer par_idx_buffer(uint32_t *p, int v)
 {
-  uint32_t packed_norms[verts];
-  for (int v = 0, i = 0; v < verts; v++, i+= comp)
+  uint16_t idx[v];
+  for (int i = 0; i < v; i++) idx[i] = p[i];
+  
+  return sg_make_buffer(&(sg_buffer_desc){
+    .data = SG_RANGE(idx),
+    .type = SG_BUFFERTYPE_INDEXBUFFER
+  });
+}
+
+sg_buffer float_buffer(float *f, int v)
+{
+  return sg_make_buffer(&(sg_buffer_desc){
+    .data = (sg_range){
+      .ptr = f,
+      .size = sizeof(*f)*v
+    }
+  });
+}
+
+sg_buffer index_buffer(float *f, int verts)
+{
+  uint16_t idxs[verts];
+  for (int i = 0; i < verts; i++)
+    idxs[i] = f[i];
+  
+  return sg_make_buffer(&(sg_buffer_desc){
+    .data = SG_RANGE(idxs),
+    .type = SG_BUFFERTYPE_INDEXBUFFER,
+  });
+}
+
+sg_buffer normal_floats(float *f, int n)
+{
+  uint32_t packed_norms[n/3];
+  for (int v = 0, i = 0; v < n/3; v++, i+= 3)
     packed_norms[v] = pack_int10_n2(f+i);
 
   return sg_make_buffer(&(sg_buffer_desc){
@@ -106,37 +137,37 @@ sg_buffer normal_floats(float *f, int verts, int comp)
   });
 }
 
-sg_buffer ubyten_buffer(float *f, int v, int c)
+sg_buffer ubyten_buffer(float *f, int v)
 {
-  unsigned char b[v*c];
-  for (int i = 0; i < (v*c); i++)
+  unsigned char b[v];
+  for (int i = 0; i < (v); i++)
     b[i] = f[i]*255;
     
   return sg_make_buffer(&(sg_buffer_desc){.data=SG_RANGE(b)});
 }
 
-sg_buffer ubyte_buffer(float *f, int v, int c)
+sg_buffer ubyte_buffer(float *f, int v)
 {
-  unsigned char b[v*c];
-  for (int i = 0; i < (v*c); i++)
+  unsigned char b[v];
+  for (int i = 0; i < (v); i++)
     b[i] = f[i];
     
   return sg_make_buffer(&(sg_buffer_desc){.data=SG_RANGE(b)});
 }
 
-sg_buffer joint_buf(float *f, int v, int c)
+sg_buffer joint_buf(float *f, int v)
 {
-  char joints[v*c];
-  for (int i = 0; i < (v*c); i++)
+  char joints[v];
+  for (int i = 0; i < (v); i++)
     joints[i] = f[i];
   
   return sg_make_buffer(&(sg_buffer_desc){ .data = SG_RANGE(joints)});
 }
 
-sg_buffer weight_buf(float *f, int v, int c)
+sg_buffer weight_buf(float *f, int v)
 {
-  unsigned char weights[v*c];
-  for (int i = 0; i < (v*c); i++)
+  unsigned char weights[v];
+  for (int i = 0; i < (v); i++)
     weights[i] = f[i]*255;
   
   return sg_make_buffer(&(sg_buffer_desc){ .data = SG_RANGE(weights)});
@@ -147,6 +178,22 @@ HMM_Vec3 index_to_vert(uint32_t idx, float *f)
   return (HMM_Vec3){f[idx*3], f[idx*3+1], f[idx*3+2]};
 }
 
+void primitive_gen_indices(primitive *prim)
+{
+  if (prim->idx_count == 0) return;
+  uint16_t *idxs = malloc(sizeof(*idxs)*prim->idx_count);
+  
+  for (int z = 0; z < prim->idx_count; z++)
+    idxs[z] = z;
+  
+  prim->idx = sg_make_buffer(&(sg_buffer_desc){
+    .data.ptr = idxs,
+    .data.size = sizeof(uint16_t) * prim->idx_count,
+    .type = SG_BUFFERTYPE_INDEXBUFFER});
+    
+  free(idxs);
+}
+
 struct primitive mesh_add_primitive(cgltf_primitive *prim)
 {
   primitive retp = (primitive){0};
@@ -168,24 +215,12 @@ struct primitive mesh_add_primitive(cgltf_primitive *prim)
     });
 
     retp.idx_count = n;
+    free(idxs);
   } else {
-    YughWarn("Model does not have indices. Generating them.");
-    int c = cgltf_accessor_unpack_floats(prim->attributes[0].data, NULL, 0);
-
-    retp.idx_count = c;
-    idxs = malloc(sizeof(*idxs)*c);
-    
-    for (int z = 0; z < c; z++)
-      idxs[z] = z;
-
-    retp.idx = sg_make_buffer(&(sg_buffer_desc){
-	    .data.ptr = idxs,
-	    .data.size = sizeof(uint16_t) * c,
-	    .type = SG_BUFFERTYPE_INDEXBUFFER});
+    retp.idx_count = cgltf_accessor_unpack_floats(prim->attributes[0].data, NULL, 0);
+    primitive_gen_indices(&retp);
   }
   
-  free(idxs);
-
   printf("adding material\n");
   mesh_add_material(&retp, prim->material);
 
@@ -208,26 +243,26 @@ struct primitive mesh_add_primitive(cgltf_primitive *prim)
       break;
 
     case cgltf_attribute_type_normal:
-      retp.norm = normal_floats(vs, verts, comp);
+      retp.norm = normal_floats(vs, n);
       break;
 
     case cgltf_attribute_type_tangent:
       break;
 
     case cgltf_attribute_type_color:
-      retp.color = ubyten_buffer(vs,verts,comp);
+      retp.color = ubyten_buffer(vs,n);
       break;
 
     case cgltf_attribute_type_weights:
-      retp.weight = ubyten_buffer(vs, verts, comp);
+      retp.weight = ubyten_buffer(vs, n);
       break;
 
     case cgltf_attribute_type_joints:
-      retp.bone = ubyte_buffer(vs, verts, comp);
+      retp.bone = ubyte_buffer(vs, n);
       break;
 
     case cgltf_attribute_type_texcoord:
-      retp.uv = texcoord_floats(vs, verts, comp);
+      retp.uv = texcoord_floats(vs, n);
       break;
     case cgltf_attribute_type_invalid:
       YughWarn("Invalid type.");
@@ -505,6 +540,68 @@ void model_draw_go(model *model, gameobject *go, gameobject *cam)
   }
 }
 
+int mat2type(int mat)
+{
+  switch(mat) {
+    case MAT_POS:
+    case MAT_WH:
+    case MAT_ST:
+      return SG_VERTEXFORMAT_FLOAT2;
+    case MAT_UV:
+    case MAT_TAN:
+      return SG_VERTEXFORMAT_USHORT2N;
+    case MAT_NORM:
+      return SG_VERTEXFORMAT_UINT10_N2;
+    case MAT_BONE:
+      return SG_VERTEXFORMAT_UBYTE4;
+    case MAT_WEIGHT:
+    case MAT_COLOR:
+      return SG_VERTEXFORMAT_UBYTE4N;
+    case MAT_ANGLE:
+      return SG_VERTEXFORMAT_FLOAT;
+  };
+  return 0;
+}
+
+sg_buffer mat2buffer(int mat, primitive *p)
+{
+  switch(mat) {
+    case MAT_POS: return p->pos;
+    case MAT_NORM: return p->norm;
+    case MAT_UV: return p->uv;
+    case MAT_BONE: return p->bone;
+    case MAT_WEIGHT: return p->weight;
+    case MAT_COLOR: return p->color;
+  };
+  
+  return p->pos;
+}
+
+sg_bindings primitive_bindings(primitive *p, JSValue v)
+{
+  sg_bindings b = {0};
+  JSValue inputs = js_getpropstr(js_getpropstr(v, "vs"), "inputs");
+  for (int i = 0; i < js_arrlen(inputs); i++) {
+    JSValue attr = js_getpropidx(inputs, i);
+    int mat = js2number(js_getpropstr(attr, "mat"));  
+    int slot = js2number(js_getpropstr(attr, "slot"));
+    sg_buffer buf = mat2buffer(mat,p);
+    if (!buf.id) {
+      // ERROR
+    }
+    b.vertex_buffers[slot] = buf;
+  }
+  
+  b.index_buffer = p->idx;
+  
+  return b;
+}
+
+void primitive_free(primitive *prim)
+{
+
+}
+
 void material_free(material *mat)
 {
 
diff --git a/source/engine/3d/model.h b/source/engine/3d/model.h
index aa76a33..011c64f 100644
--- a/source/engine/3d/model.h
+++ b/source/engine/3d/model.h
@@ -15,17 +15,20 @@
 #define MAT_WEIGHT 4
 #define MAT_COLOR 5
 #define MAT_TAN 6
+#define MAT_ANGLE 7
+#define MAT_WH 8
+#define MAT_ST 9
 
 typedef struct material {
-  texture *diffuse;
-  texture *metalrough;
+  struct texture *diffuse;
+  struct texture *metalrough;
   float metal;
   float rough;
-  texture *normal;
+  struct texture *normal;
   float nrm;
-  texture *occlusion;
+  struct texture *occlusion;
   float occl;
-  texture *emissive;
+  struct texture *emissive;
   HMM_Vec3 emis;
 } material;
 
@@ -83,6 +86,20 @@ struct model *model_make(const char *path);
 void model_free(model *m);
 
 void model_draw_go(model *m, gameobject *go, gameobject *cam);
+sg_bindings primitive_bindings(primitive *p, JSValue pipe);
+void primitive_gen_indices(primitive *prim);
+int mat2type(int mat);
+
+sg_buffer float_buffer(float *f, int v);
+sg_buffer index_buffer(float *f, int verts);
+sg_buffer texcoord_floats(float *f, int n);
+sg_buffer par_idx_buffer(uint32_t *i, int v);
+sg_buffer normal_floats(float *f, int n);
+sg_buffer ubyten_buffer(float *f, int v);
+sg_buffer ubyte_buffer(float *f, int v);
+sg_buffer joint_buf(float *f, int v);
+sg_buffer weight_buf(float *f, int v);
+void primitive_free(primitive *prim);
 
 material *material_make();
 void material_free(material *mat);
diff --git a/source/engine/debug/debugdraw.c b/source/engine/debug/debugdraw.c
index 271b043..fb256c9 100644
--- a/source/engine/debug/debugdraw.c
+++ b/source/engine/debug/debugdraw.c
@@ -111,9 +111,6 @@ struct circle_vertex {
   float fill;
 };
 
-static sg_pipeline g3_pipe;
-static sg_shader g3_shader;
-
 void debug_nextpass()
 {
   point_sc = point_c;
@@ -196,14 +193,6 @@ static sg_shader_uniform_block_desc time_ubo = {
 
 void debugdraw_init()
 {
-/*
-  g3_shader = sg_make_shader(grid3d_shader_desc(sg_query_backend()));
-  g3_pipe = sg_make_pipeline(&(sg_pipeline_desc){
-    .shader = g3_shader,
-    .primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP,
-    .index_type = SG_INDEXTYPE_UINT32
-  });
-*/
   point_shader = sg_make_shader(point_shader_desc(sg_query_backend()));
   
   point_pipe = sg_make_pipeline(&(sg_pipeline_desc){
diff --git a/source/engine/font.c b/source/engine/font.c
index 957bf32..2d67464 100644
--- a/source/engine/font.c
+++ b/source/engine/font.c
@@ -33,8 +33,6 @@ struct text_vert {
 static struct text_vert *text_buffer;
 
 void font_init() {
-  bind_text.vertex_buffers[1] = sprite_quad;
-  
   bind_text.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
       .size = sizeof(struct text_vert),
       .type = SG_BUFFERTYPE_VERTEXBUFFER,
diff --git a/source/engine/jsffi.c b/source/engine/jsffi.c
index f8774cb..ebcaa0b 100644
--- a/source/engine/jsffi.c
+++ b/source/engine/jsffi.c
@@ -32,6 +32,7 @@
 #include "render.h"
 #include "model.h"
 #include "HandmadeMath.h"
+#include "par/par_streamlines.h"
 
 #if (defined(_WIN32) || defined(__WIN32__))
 #include <direct.h>
@@ -61,6 +62,11 @@ const char *js2str(JSValue v) {
   return JS_ToCString(js, v);
 }
 
+void sg_buffer_free(sg_buffer *b)
+{
+  sg_dealloc_buffer(*b);
+}
+
 void jsfreestr(const char *s) { JS_FreeCString(js, s); }
 QJSCLASS(gameobject)
 QJSCLASS(transform3d)
@@ -76,6 +82,8 @@ QJSCLASS(material)
 QJSCLASS(model)
 QJSCLASS(window)
 QJSCLASS(constraint)
+QJSCLASS(primitive)
+QJSCLASS(sg_buffer)
 
 static JSValue sound_proto;
 sound *js2sound(JSValue v) { return js2dsp_node(v)->data; }
@@ -111,6 +119,11 @@ JSValue js_getpropstr(JSValue v, const char *str)
   return p;
 }
 
+void js_setpropstr(JSValue v, const char *str, JSValue p)
+{
+  JS_SetPropertyStr(js, v, str, p);
+}
+
 static inline cpBody *js2body(JSValue v) { return js2gameobject(v)->body; }
 
 JSValue strarr2js(char **c)
@@ -578,6 +591,21 @@ static const JSCFunctionListEntry js_warp_damp_funcs [] = {
   CGETSET_ADD(warp_damp, damp)
 };
 
+sg_bindings js2bind(JSValue mat, JSValue prim)
+{
+  sg_bindings bind = {0};
+  for (int i = 0; i < js_arrlen(mat); i++) {
+    bind.fs.images[i] = js2texture(js_getpropidx(mat, i))->id;
+    bind.fs.samplers[i] = std_sampler; 
+  }
+  
+  bind.vertex_buffers[0] = *js2sg_buffer(js_getpropstr(prim, "pos"));
+  bind.index_buffer = *js2sg_buffer(js_getpropstr(prim, "index"));
+  bind.vertex_buffers[1] = *js2sg_buffer(js_getpropstr(prim, "uv"));
+  
+  return bind;
+}
+
 JSC_GETSET(emitter, life, number)
 JSC_GETSET(emitter, life_var, number)
 JSC_GETSET(emitter, speed, number)
@@ -595,11 +623,9 @@ JSC_GETSET(emitter, die_after_collision, boolean)
 JSC_GETSET(emitter, persist, number)
 JSC_GETSET(emitter, persist_var, number)
 JSC_GETSET(emitter, warp_mask, bitmask)
-JSC_GETSET(emitter, texture, texture)
-
-JSC_CCALL(emitter_start, start_emitter(js2emitter(this)))
-JSC_CCALL(emitter_stop, stop_emitter(js2emitter(this)))
-JSC_CCALL(emitter_emit, emitter_emit(js2emitter(this), js2number(argv[0])))
+JSC_CCALL(emitter_emit, emitter_emit(js2emitter(this), js2number(argv[0]), js2transform2d(argv[1])))
+JSC_CCALL(emitter_step, emitter_step(js2emitter(this), js2number(argv[0]), js2transform2d(argv[1])))
+JSC_CCALL(emitter_draw, emitter_draw(js2emitter(this), js2bind(argv[0], argv[1])))
 
 JSC_CCALL(render_grid, draw_grid(js2number(argv[0]), js2number(argv[1]), js2color(argv[2]));)
 JSC_CCALL(render_point, draw_cppoint(js2vec2(argv[0]), js2number(argv[1]), js2color(argv[2])))
@@ -624,7 +650,6 @@ JSC_CCALL(render_line3d,
   arrfree(v1);
 );
 
-JSC_CCALL(render_emitters, emitters_draw(&useproj))
 JSC_CCALL(render_flush, debug_flush(&useproj); )
 
 JSC_CCALL(render_flushtext, text_flush())
@@ -740,20 +765,40 @@ JSC_CCALL(render_pipeline3d,
   return number2js(pipe.id);
 )
 
-JSC_CCALL(render_pipelinetext,
-  sg_shader fontshader = js2shader(argv[0]);
-  sg_pipeline_desc p = {0};
-  p.shader = fontshader;
+sg_vertex_layout_state js2layout(JSValue v)
+{
   sg_vertex_layout_state st = {0};
-  st.attrs[0].format = SG_VERTEXFORMAT_FLOAT2;
-  st.attrs[0].buffer_index = 1;
-  st.attrs[1].format = SG_VERTEXFORMAT_FLOAT2;
-  st.attrs[2].format = SG_VERTEXFORMAT_FLOAT2;
-  st.attrs[3].format = SG_VERTEXFORMAT_USHORT2N;
-  st.attrs[4].format = SG_VERTEXFORMAT_USHORT2N;
-  st.attrs[5].format = SG_VERTEXFORMAT_UBYTE4N;
-  st.buffers[0].step_func = SG_VERTEXSTEP_PER_INSTANCE;
-  p.layout = st;
+  JSValue inputs = js_getpropstr(js_getpropstr(v, "vs"), "inputs");
+  for (int i = 0; i < js_arrlen(inputs); i++) {
+    JSValue attr = js_getpropidx(inputs, i);
+    int slot = js2number(js_getpropstr(attr, "slot"));
+    int mat = js2number(js_getpropstr(attr, "mat"));
+    st.attrs[slot].format = mat2type(mat);
+    st.attrs[slot].buffer_index = slot;
+  }
+  
+  return st;
+}
+
+JSC_CCALL(render_pipelineparticle,
+  sg_pipeline_desc p = {0};
+  p.shader = js2shader(argv[0]);
+  p.layout = js2layout(argv[0]);
+  p.primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP;
+  p.index_type = SG_INDEXTYPE_UINT16;
+  //p.cull_mode = SG_CULLMODE_BACK;
+  //p.colors[0].blend = blend_trans;
+  //p.depth.write_enabled = true;
+  //p.depth.compare = SG_COMPAREFUNC_LESS_EQUAL;
+  
+  sg_pipeline pipe = sg_make_pipeline(&p);
+  return number2js(pipe.id);
+)
+  
+JSC_CCALL(render_pipelinetext,
+  sg_pipeline_desc p = {0};
+  p.shader = js2shader(argv[0]);
+  p.layout = js2layout(argv[0]);
   p.primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP;
   p.colors[0].blend = blend_trans;
   
@@ -762,18 +807,15 @@ JSC_CCALL(render_pipelinetext,
 )
 
 JSC_CCALL(render_pipeline,
-  sg_shader sgshader = js2shader(argv[0]);
-  
-  sg_pipeline_desc pdesc = {0};
-  pdesc.shader = sgshader;
-  pdesc.cull_mode = SG_CULLMODE_FRONT;
-  
-  pdesc.layout.attrs[0].format = SG_VERTEXFORMAT_FLOAT2;
-  pdesc.primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP;
+  sg_pipeline_desc p = {0};
+  p.shader = js2shader(argv[0]);
+  p.layout = js2layout(argv[0]);
+  //p.cull_mode = SG_CULLMODE_FRONT;
+  p.index_type = SG_INDEXTYPE_UINT16;
   if (js2boolean(js_getpropstr(argv[0], "blend")))
-    pdesc.colors[0].blend = blend_trans;
+    p.colors[0].blend = blend_trans;
   
-  sg_pipeline pipe = sg_make_pipeline(&pdesc);
+  sg_pipeline pipe = sg_make_pipeline(&p);
 
   return number2js(pipe.id);
 )
@@ -822,16 +864,10 @@ JSC_CCALL(render_setunim4,
 );  
 
 JSC_CCALL(render_spdraw,
-  sg_bindings bind = {0};
-  bind.vertex_buffers[0] = sprite_quad;
-  
-  for (int i = 0; i < js_arrlen(argv[0]); i++) {
-    bind.fs.images[i] = js2texture(js_getpropidx(argv[0], i))->id;
-    bind.fs.samplers[i] = std_sampler;
-  }
-  
+  sg_bindings bind = js2bind(argv[0], argv[1]);
   sg_apply_bindings(&bind);
-  sg_draw(0,4,1);
+  int p = js2number(js_getpropstr(argv[1], "count"));
+  sg_draw(0,p,1);
 )
 
 JSC_CCALL(render_setpipeline,
@@ -847,7 +883,6 @@ static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, poly, 2),
   MIST_FUNC_DEF(render, line, 3),
   MIST_FUNC_DEF(render, line3d, 2),
-  MIST_FUNC_DEF(render, emitters, 0),
   MIST_FUNC_DEF(render, flushtext, 0),
   MIST_FUNC_DEF(render, flush, 0),
   MIST_FUNC_DEF(render, end_pass, 0),
@@ -858,9 +893,10 @@ static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, pipeline, 1),
   MIST_FUNC_DEF(render, pipeline3d, 1),
   MIST_FUNC_DEF(render, pipelinetext, 1),
+  MIST_FUNC_DEF(render, pipelineparticle, 1),
   MIST_FUNC_DEF(render, setuniv3, 2),
   MIST_FUNC_DEF(render, setuniv, 2),
-  MIST_FUNC_DEF(render, spdraw, 2),
+  MIST_FUNC_DEF(render, spdraw, 1),
   MIST_FUNC_DEF(render, setuniproj, 2),
   MIST_FUNC_DEF(render, setunim4, 3),
   MIST_FUNC_DEF(render, setuniv2, 2),
@@ -958,7 +994,6 @@ static const JSCFunctionListEntry js_input_funcs[] = {
   MIST_FUNC_DEF(input, cursor_img, 1)
 };
 
-JSC_CCALL(prosperon_emitters_step, emitters_step(js2number(argv[0])))
 JSC_CCALL(prosperon_phys2d_step, phys2d_update(js2number(argv[0])))
 JSC_CCALL(prosperon_window_render, openglRender(&mainwin, js2transform2d(argv[0]), js2number(argv[1])))
 JSC_CCALL(prosperon_guid,
@@ -972,7 +1007,6 @@ JSC_CCALL(prosperon_guid,
 )
 
 static const JSCFunctionListEntry js_prosperon_funcs[] = {
-  MIST_FUNC_DEF(prosperon, emitters_step, 1),
   MIST_FUNC_DEF(prosperon, phys2d_step, 1),
   MIST_FUNC_DEF(prosperon, window_render, 0),
   MIST_FUNC_DEF(prosperon, guid, 0),
@@ -1247,8 +1281,6 @@ static const JSCFunctionListEntry js_physics_funcs[] = {
   MIST_FUNC_DEF(physics, make_gravity, 0),
 };
 
-
-
 JSC_CCALL(model_draw_go,
   model_draw_go(js2model(this), js2gameobject(argv[0]), js2gameobject(argv[1]))
 );
@@ -1275,10 +1307,9 @@ static const JSCFunctionListEntry js_emitter_funcs[] = {
   CGETSET_ADD(emitter, persist),
   CGETSET_ADD(emitter, persist_var),
   CGETSET_ADD(emitter, warp_mask),  
-  MIST_FUNC_DEF(emitter, start, 0),
-  MIST_FUNC_DEF(emitter, stop, 0),
   MIST_FUNC_DEF(emitter, emit, 1),
-  CGETSET_ADD(emitter, texture),
+  MIST_FUNC_DEF(emitter, step, 1),
+  MIST_FUNC_DEF(emitter, draw, 1)
 };
 
 JSC_GETSET(transform2d, pos, vec2)
@@ -1685,8 +1716,12 @@ JSValue js_os_sys(JSContext *js, JSValue this, int argc, JSValue *argv)
   return str2js("linux");
   #elif defined(_WIN32) || defined(_WIN64)
   return str2js("windows");
+  #elif defined(IOS)
+  return str2js("ios");
   #elif defined(__APPLE__)
   return str2js("macos");
+  #elif define(__EMSCRIPTEN__)
+  return str2js("web");
   #endif
   return JS_UNDEFINED;
 }
@@ -1699,7 +1734,6 @@ JSC_SSCALL(os_eval, ret = script_eval(str, str2))
 JSC_SCALL(os_capture, capture_screen(js2number(argv[1]), js2number(argv[2]), js2number(argv[4]), js2number(argv[5]), str))
 
 JSC_CCALL(os_sprite,
-  if (js2boolean(argv[0])) return JS_GetClassProto(js,js_sprite_id);
   return sprite2js(sprite_make());
 )
 
@@ -1768,9 +1802,89 @@ JSC_CCALL(os_make_transform2d,
 JSC_SCALL(os_system, return number2js(system(str)); )
 
 JSC_SCALL(os_make_model, ret = model2js(model_make(str)))
+JSC_CCALL(os_make_emitter, ret = emitter2js(make_emitter()))
+
+JSC_CCALL(os_make_buffer,
+  int type = js2number(argv[1]);
+  float *b = malloc(sizeof(float)*js_arrlen(argv[0]));
+  for (int i = 0; i < js_arrlen(argv[0]); i++)
+    b[i] = js2number(js_getpropidx(argv[0],i));
+    
+  sg_buffer *p = malloc(sizeof(sg_buffer));
+  
+  switch(type) {
+    case 0:
+      *p = sg_make_buffer(&(sg_buffer_desc){
+        .size = sizeof(float)*js_arrlen(argv[0]),
+        .data = b
+      });
+      break;
+    case 1:
+      *p = index_buffer(b, js_arrlen(argv[0]));
+      break;
+    case 2:
+      *p = texcoord_floats(b, js_arrlen(argv[0]));
+      break;
+  }
+
+  free(b);
+  return sg_buffer2js(p);
+)
+
+JSC_CCALL(os_make_line_prim,
+  JSValue prim = JS_NewObject(js);
+  HMM_Vec2 *v = js2cpvec2arr(argv[0]);
+  parsl_position par_v[arrlen(v)];
+  for (int i = 0; i < arrlen(v); i++) {
+    par_v[i].x = v[i].x;
+    par_v[i].y = v[i].y;
+  }
+  
+  parsl_context *par_ctx = parsl_create_context((parsl_config){
+    .thickness = js2number(argv[1]),
+    .flags= PARSL_FLAG_ANNOTATIONS,
+    .u_mode = PAR_U_MODE_NORMALIZED_DISTANCE
+  });
+  
+  uint16_t spine_lens[] = {arrlen(v)};
+  
+  parsl_mesh *m = parsl_mesh_from_lines(par_ctx, (parsl_spine_list){
+    .num_vertices = arrlen(v),
+    .num_spines = 1,
+    .vertices = par_v,
+    .spine_lengths = spine_lens
+  });
+  
+  sg_buffer *pos = malloc(sizeof(*pos));
+  *pos = sg_make_buffer(&(sg_buffer_desc){
+    .data = (sg_range){
+      .ptr = m->positions,
+      .size = sizeof(parsl_position)*m->num_vertices
+    }
+  });
+  js_setpropstr(prim, "pos", sg_buffer2js(pos));
+  js_setpropstr(prim, "count", number2js(m->num_triangles*3));
+  sg_buffer *idx = malloc(sizeof(*idx));
+  *idx = par_idx_buffer(m->triangle_indices, m->num_triangles*3);
+  js_setpropstr(prim, "index", sg_buffer2js(idx));
+  
+  printf("there are %d verts\n", m->num_vertices);
+  float uv[m->num_vertices*2];
+  for (int i = 0; i < m->num_vertices; i++) {
+    uv[i*2] = m->annotations[i].u_along_curve;
+    uv[i*2+1] = m->annotations[i].v_across_curve;
+    printf("uv is %g,%g\n", uv[i*2], uv[i*2+1]);
+  }
+  sg_buffer *buv = malloc(sizeof(*buv));
+  *buv = texcoord_floats(uv, m->num_vertices*2);
+  //*buv = float_buffer(uv, m->num_vertices*2);
+  js_setpropstr(prim, "uv", sg_buffer2js(buv));
+  
+  return prim;
+)  
 
 static const JSCFunctionListEntry js_os_funcs[] = {
-  MIST_FUNC_DEF(os,sprite,1),
+  MIST_FUNC_DEF(os,sprite,0),
   MIST_FUNC_DEF(os, cwd, 0),
   MIST_FUNC_DEF(os, env, 1),
   MIST_FUNC_DEF(os, sys, 0),
@@ -1789,6 +1903,9 @@ static const JSCFunctionListEntry js_os_funcs[] = {
   MIST_FUNC_DEF(os, make_font, 2),
   MIST_FUNC_DEF(os, make_model, 1),
   MIST_FUNC_DEF(os, make_transform2d, 1),
+  MIST_FUNC_DEF(os, make_emitter, 0),
+  MIST_FUNC_DEF(os, make_buffer, 1),
+  MIST_FUNC_DEF(os, make_line_prim, 2),
 };
 
 #include "steam.h"
diff --git a/source/engine/jsffi.h b/source/engine/jsffi.h
index 266c09c..43091b0 100644
--- a/source/engine/jsffi.h
+++ b/source/engine/jsffi.h
@@ -139,5 +139,6 @@ JSValue js_getpropidx(JSValue v, uint32_t i);
 JSValue js_getpropstr(JSValue v, const char *str);
 const char *js2str(JSValue v);
 void jsfreestr(const char *str);
+int js_arrlen(JSValue v);
 
 #endif
diff --git a/source/engine/particle.c b/source/engine/particle.c
index 9c8ef75..ca7dceb 100644
--- a/source/engine/particle.c
+++ b/source/engine/particle.c
@@ -1,119 +1,37 @@
 #include "particle.h"
 #include "stb_ds.h"
 #include "render.h"
-#include "particle.sglsl.h"
 #include "2dphysics.h"
-#include "log.h"
-#include "simplex.h"
-#include "pthread.h"
 #include "math.h"
-
-#define SCHED_IMPLEMENTATION
-#include "sched.h"
-
-static emitter **emitters;
-
-static sg_shader par_shader;
-static sg_pipeline par_pipe;
-static sg_bindings par_bind;
-static int draw_count;
-
-#define MAX_PARTICLES 1000000
-
-struct scheduler sched;
-void *mem;
-
-struct par_vert {
-  HMM_Vec2 pos;
-  float angle;
-  HMM_Vec2 scale;
-  struct rgba color;
-};
-
-typedef struct par_vert par_vert;
-
-void particle_init()
-{
-  sched_size needed;
-  scheduler_init(&sched, &needed, 1, NULL);
-  mem = calloc(needed, 1);
-  scheduler_start(&sched,mem);
-  
-  par_shader = sg_make_shader(particle_shader_desc(sg_query_backend()));
-  
-  par_pipe = sg_make_pipeline(&(sg_pipeline_desc){
-    .shader = par_shader,
-    .layout = {
-      .attrs = {
-        [1].format = SG_VERTEXFORMAT_FLOAT2,
-	      [2].format = SG_VERTEXFORMAT_FLOAT,
-	      [3].format = SG_VERTEXFORMAT_FLOAT2,
-	      [4].format = SG_VERTEXFORMAT_UBYTE4N,
-	      [0].format = SG_VERTEXFORMAT_FLOAT2,
-	      [0].buffer_index = 1
-      },
-    .buffers[0].step_func = SG_VERTEXSTEP_PER_INSTANCE,
-    },
-    .primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP,
-    .label = "particle pipeline",
-    .cull_mode = SG_CULLMODE_BACK,
-    .colors[0].blend = blend_trans,
-    .depth = {
-      .write_enabled = true,
-      .compare = SG_COMPAREFUNC_LESS_EQUAL
-    }
-  });
-
-  par_bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
-    .size = sizeof(par_vert)*MAX_PARTICLES,
-    .type = SG_BUFFERTYPE_VERTEXBUFFER,
-    .usage = SG_USAGE_STREAM,
-    .label = "particle buffer"
-  });
-  
-  float circleverts[8] = {
-    0,0,
-    0,1,
-    1,0,
-    1,1,
-  };
-
-  par_bind.vertex_buffers[1] = sprite_quad;
-  par_bind.fs.samplers[0] = std_sampler;
-}
+#include "log.h"
 
 emitter *make_emitter() {
   emitter *e = calloc(sizeof(*e),1);
   
   e->max = 20;
-  arrsetcap(e->particles, e->max);
+  arrsetcap(e->particles, 10);
   for (int i = 0; i < arrlen(e->particles); i++)
     e->particles[i].life = 0;
     
   e->life = 10;
   e->tte = lerp(e->explosiveness, e->life/e->max, 0);
-  //sampler_add(&e->color, 0, (HMM_Vec4){1,1,1,1});
   e->scale = 1;
   e->speed = 20;
-  e->texture = NULL;
-  arrpush(emitters,e);
+  e->buffer = sg_make_buffer(&(sg_buffer_desc){
+    .size = sizeof(struct par_vert),
+    .type = SG_BUFFERTYPE_VERTEXBUFFER,
+    .usage = SG_USAGE_STREAM
+  });
   return e;
 }
 
 void emitter_free(emitter *e)
 {
-  YughWarn("kill emitter");
   arrfree(e->particles);
-  for (int i = arrlen(emitters)-1; i >= 0; i--)
-    if (emitters[i] == e) {
-      arrdelswap(emitters,i);
-      break;
-    }
+  arrfree(e->verts);
+  free(e);
 }
 
-void start_emitter(emitter *e) { e->on = 1; }
-void stop_emitter(emitter *e) { e->on = 0; }
-
 /* Variate a value around variance. Variance between 0 and 1. */
 
 float variate(float val, float variance)
@@ -121,124 +39,84 @@ float variate(float val, float variance)
   return val + val*(frand(variance)-(variance/2));
 }
 
-int emitter_spawn(emitter *e)
+int emitter_spawn(emitter *e, transform2d *t)
 {
   particle p;
   p.life = e->life;
-  p.pos = (HMM_Vec4){e->t.pos.x,e->t.pos.y,0,0};
-  float newan = e->t.rotation.Elements[0]+(2*HMM_PI*(frand(e->divergence)-(e->divergence/2)));
+  p.pos = (HMM_Vec4){t->pos.x,t->pos.y,0,0};
+  float newan = t->angle * HMM_TurnToRad*(frand(e->divergence)-(e->divergence/2));
   HMM_Vec2 norm = HMM_V2Rotate((HMM_Vec2){0,1}, newan);
   p.v = HMM_MulV4F((HMM_Vec4){norm.x,norm.y,0,0}, variate(e->speed, e->variation));
-  p.angle = 0;
-  p.scale = variate(e->scale, e->scale_var);
-//  p.av = 1;
+  p.angle = newan;
+  p.scale = variate(e->scale*t->scale.x, e->scale_var);
   arrput(e->particles,p);
   return 1;
 }
 
-void emitter_emit(emitter *e, int count)
+void emitter_emit(emitter *e, int count, transform2d *t)
 {
   for (int i = 0; i < count; i++)
-    emitter_spawn(e);
+    emitter_spawn(e, t);
 }
 
-void emitters_step(double dt)
+void emitter_draw(emitter *e, sg_bindings bind)
 {
-  for (int i = 0; i < arrlen(emitters); i++)
-    emitter_step(emitters[i], dt);
-}
-
-static struct par_vert pv[MAX_PARTICLES];
-
-void parallel_pv(emitter *e, struct scheduler *sched, struct sched_task_partition t, sched_uint thread_num)
-{
-  for (int i=t.start; i < t.end; i++) {
+  if (arrlen(e->particles) == 0) return;
+  arrsetlen(e->verts, arrlen(e->particles));
+  for (int i = 0; i < arrlen(e->particles); i++) {
     if (e->particles[i].time >= e->particles[i].life) continue;
-    particle *p = &e->particles[i];
-    pv[i].pos = p->pos.xy;
-    pv[i].angle = p->angle;
-    float s = p->scale;
-    if (p->time < e->grow_for)
-      s = lerp(p->time/e->grow_for, 0, p->scale);
+    particle *p = e->particles+i;
+    e->verts[i].pos = p->pos.xy;
+    e->verts[i].angle = p->angle;
+    e->verts[i].scale = p->scale;
+/*    if (p->time < e->grow_for)
+      e->verts[i].scale = lerp(p->time/e->grow_for, 0, p->scale);
     else if (p->time > (p->life - e->shrink_for))
-      s = lerp((p->time-(p->life-e->shrink_for))/e->shrink_for, p->scale, 0);
-    pv[i].scale = HMM_ScaleV2((HMM_Vec2){e->texture->width,e->texture->height}, s);
-    pv[i].color = vec2rgba(p->color);
+      e->verts[i].scale = lerp((p->time-(p->life-e->shrink_for))/e->shrink_for, p->scale, 0);*/
+    e->verts[i].color = vec2rgba(p->color);
   }
-}
 
-void emitter_draw(emitter *e, gameobject *go)
-{
-  sg_apply_pipeline(par_pipe);
-  sg_apply_uniforms(SG_SHADERSTAGE_VS, 0, SG_RANGE_REF(useproj));
-  sg_apply_bindings(&par_bind);
-  par_bind.fs.images[0] = e->texture->id;
-  struct sched_task task;
-  scheduler_add(&sched, &task, parallel_pv, e, arrlen(e->particles), arrlen(e->particles)/sched.threads_num);
-  scheduler_join(&sched, &task);
-  sg_append_buffer(par_bind.vertex_buffers[0], &(sg_range){.ptr=&pv, .size=sizeof(struct par_vert)*arrlen(e->particles)});
-  draw_count += arrlen(e->particles);
-  sg_draw(0,4,draw_count);
-}
-
-void emitters_draw(HMM_Mat4 *proj)
-{
-  if (arrlen(emitters) == 0) return;
-  int draw_count = 0;
-  for (int i = 0; i < arrlen(emitters); i++) {
-    emitter *e = emitters[i];
-    par_bind.fs.images[0] = e->texture->id;
-
-    struct sched_task task;
-    scheduler_add(&sched, &task, parallel_pv, e, arrlen(e->particles), arrlen(e->particles)/sched.threads_num);
-    scheduler_join(&sched, &task);
+  sg_range verts;
+  verts.ptr = e->verts;
+  verts.size = sizeof(*e->verts)*arrlen(e->verts);
+  if (sg_query_buffer_will_overflow(e->buffer, verts.size))
+    e->buffer = sg_make_buffer(&(sg_buffer_desc){
+      .size = verts.size,
+      .type = SG_BUFFERTYPE_VERTEXBUFFER,
+      .usage = SG_USAGE_STREAM
+    });
     
-    sg_append_buffer(par_bind.vertex_buffers[0], &(sg_range){.ptr=&pv, .size=sizeof(struct par_vert)*arrlen(e->particles)});
-    draw_count += arrlen(e->particles);
-  }
-
-  sg_apply_pipeline(par_pipe);
-  sg_apply_uniforms(SG_SHADERSTAGE_VS, 0, SG_RANGE_REF(*proj));
-  sg_apply_bindings(&par_bind);
-  sg_draw(0, 4, draw_count);
+  sg_append_buffer(e->buffer, &verts);
+  
+  bind.vertex_buffers[0] = e->buffer;
+  sg_apply_bindings(&bind);
+  sg_draw(0,4,arrlen(e->verts));
 }
 
-static double dt;
-static HMM_Vec4 g_accel;
-
-void parallel_step(emitter *e, struct scheduler *shed, struct sched_task_partition t, sched_uint thread_num)
-{
-  for (int i = t.end-1; i >=0; i--) {
+void emitter_step(emitter *e, double dt, transform2d *t) {
+  HMM_Vec4 g_accel = HMM_MulV4F((HMM_Vec4){cpSpaceGetGravity(space).x, cpSpaceGetGravity(space).y, 0, 0}, dt);
+  
+  for (int i = 0; i < arrlen(e->particles); i++) {
     if (e->particles[i].time >= e->particles[i].life) continue;
-
-    if (e->warp_mask & gravmask)
-      e->particles[i].v = HMM_AddV4(e->particles[i].v, g_accel);
+  
+    //if (e->warp_mask & gravmask)
+//      e->particles[i].v = HMM_AddV4(e->particles[i].v, g_accel);
       
     e->particles[i].pos = HMM_AddV4(e->particles[i].pos, HMM_MulV4F(e->particles[i].v, dt));
     e->particles[i].angle += e->particles[i].av*dt;
     e->particles[i].time += dt;
     e->particles[i].color = sample_sampler(&e->color, e->particles[i].time/e->particles[i].life);
     e->particles[i].scale = e->scale;
-
+  
    if (e->particles[i].time >= e->particles[i].life)
      arrdelswap(e->particles, i);
    else if (query_point(e->particles[i].pos.xy))
      arrdelswap(e->particles,i);
   }
-}
 
-void emitter_step(emitter *e, double mdt) {
-  dt = mdt;
-  g_accel = HMM_MulV4F((HMM_Vec4){cpSpaceGetGravity(space).x, cpSpaceGetGravity(space).y, 0, 0}, dt);
-  if (arrlen(e->particles) == 0) return;
-  struct sched_task task;
-  scheduler_add(&sched, &task, parallel_step, e, arrlen(e->particles), arrlen(e->particles)/sched.threads_num);
-  scheduler_join(&sched, &task);
-
-  if (!e->on) return;
   e->tte-=dt;
   if (e->tte <= 0) {
-    emitter_spawn(e);
+    emitter_spawn(e, t);
     e->tte = lerp(e->explosiveness, e->life/e->max,0);
   }
 }
diff --git a/source/engine/particle.h b/source/engine/particle.h
index 55ebfa1..ce6227a 100644
--- a/source/engine/particle.h
+++ b/source/engine/particle.h
@@ -7,6 +7,7 @@
 #include "texture.h"
 #include "anim.h"
 #include "gameobject.h"
+#include "render.h"
 
 typedef struct particle {
   HMM_Vec4 pos;
@@ -23,9 +24,16 @@ typedef struct particle {
 #define CLOUD 1
 #define MESH 2
 
+typedef struct par_vert {
+  HMM_Vec2 pos;
+  float angle;
+  float scale;
+  struct rgba color;
+} par_vert;
+
 typedef struct emitter {
   struct particle *particles;
-  transform3d t;
+  par_vert *verts;
   HMM_Vec3 *mesh; /* list of points to optionally spawn from */
   HMM_Vec3 *norm; /* norm at each point */
   int type; /* spray, cloud, or mesh */
@@ -44,8 +52,6 @@ typedef struct emitter {
   float scale_var;
   float grow_for; /* seconds to grow from small until scale */
   float shrink_for; /* seconds to shrink to small prior to its death */
-  /* PARTICLE TYPE */
-  texture *texture;
   /* ROTATION AND COLLISION */
   int collision_mask; /* mask for collision */
   float bounce; /* bounce back after collision */
@@ -55,22 +61,15 @@ typedef struct emitter {
   float persist_var;
   /* TRAILS */
   warpmask warp_mask;
-  int on;
-  double tte; /* time to emit */  
+  double tte; /* time to emit */ 
+  sg_buffer buffer; 
 } emitter;
 
-void particle_init();
-
 emitter *make_emitter();
 void emitter_free(emitter *e);
 
-void start_emitter(emitter *e);
-void stop_emitter(emitter *e);
-
-void emitter_emit(emitter *e, int count);
-void emitters_step(double dt);
-void emitter_draw(emitter *e, gameobject *go);
-void emitters_draw(HMM_Mat4 *proj);
-void emitter_step(emitter *e, double dt);
+void emitter_emit(emitter *e, int count, transform2d *t);
+void emitter_step(emitter *e, double dt, transform2d *t);
+void emitter_draw(emitter *e, sg_bindings bind);
 
 #endif
diff --git a/source/engine/render.c b/source/engine/render.c
index 58f9c59..456d65f 100644
--- a/source/engine/render.c
+++ b/source/engine/render.c
@@ -18,9 +18,6 @@
 #include "sokol/sokol_glue.h"
 #include "stb_image_write.h"
 
-#include "box.sglsl.h"
-#include "shadow.sglsl.h"
-
 #include "sokol/sokol_gfx.h"
 #include "sokol_gfx_ext.h"
 
@@ -31,7 +28,6 @@
 HMM_Vec2 campos = {0,0};
 float camzoom = 1;
 
-sg_buffer sprite_quad;
 sg_sampler std_sampler;
 sg_sampler tex_sampler;
 
@@ -127,14 +123,6 @@ void capture_screen(int x, int y, int w, int h, const char *path)
 
 sg_pass_action pass_action = {0};
 
-static struct {
-  sg_pass_action pass_action;
-
-  sg_pass pass;
-  sg_pipeline pipe;
-  sg_shader shader;
-} sg_shadow;
-
 void trace_apply_pipeline(sg_pipeline pip, void *data)
 {
 //  YughSpam("Applying pipeline %u %s.", pip, sg_query_pipeline_desc(pip).label);
@@ -227,20 +215,6 @@ void render_init() {
     .logger = { .func = sg_logging },
     .buffer_pool_size = 1024
   });
-    
-  float quad[] = {
-  0,0,
-  1,0,
-  0,1,
-  1,1
-  };
-  
-  sprite_quad = sg_make_buffer(&(sg_buffer_desc){
-    .data = quad,
-    .size = sizeof(quad),
-    .usage = SG_USAGE_IMMUTABLE,
-    .label = "sprite quad"
-  });
   
   std_sampler = sg_make_sampler(&(sg_sampler_desc){});
   tex_sampler = sg_make_sampler(&(sg_sampler_desc){
@@ -262,69 +236,6 @@ void render_init() {
   pass_action = (sg_pass_action){
     .colors[0] = {.load_action = SG_LOADACTION_CLEAR, .clear_value = c},
   };
-  
-  sg_gif.shader = sg_make_shader(box_shader_desc(sg_query_backend()));
-
-  sg_gif.pipe = sg_make_pipeline(&(sg_pipeline_desc){
-    .shader = sg_gif.shader,
-    .layout = {
-      .attrs = {
-        [0].format = SG_VERTEXFORMAT_FLOAT2,
-      	[1].format = SG_VERTEXFORMAT_FLOAT2
-      }
-    },
-    .colors[0].pixel_format = SG_PIXELFORMAT_RGBA8,
-    .label = "gif pipe",
-  });
-
-  float crt_quad[] = {
-    -1, 1, 0, 1,
-    -1, -1, 0, 0,
-    1, -1, 1, 0,
-    -1, 1, 0, 1,
-    1, -1, 1, 0,
-    1, 1, 1, 1
-  };
-
-  float gif_quad[] = {
-    -1, 1, 0, 1,
-    -1, -1, 0, 0,
-    1, -1, 1, 0,
-    -1, 1, 0, 1,
-    1, -1, 1, 0,
-    1, 1, 1, 1
-  };
-  
-  sg_limits ll = sg_query_limits();
-  printf("attribute limits %d\n", ll.max_vertex_attrs);
-  
-  sg_gif.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
-    .size = sizeof(gif_quad),
-    .data = gif_quad,
-    .label = "gif vert buffer",
-  });
-  sg_gif.bind.fs.samplers[0] = std_sampler;
-  
-  sg_crt.shader = sg_make_shader(crt_shader_desc(sg_query_backend()));
-  sg_crt.pipe = sg_make_pipeline(&(sg_pipeline_desc){
-    .shader = sg_crt.shader,
-    .layout = {
-      .attrs = {
-        [0].format = SG_VERTEXFORMAT_FLOAT2,
-        [1].format = SG_VERTEXFORMAT_FLOAT2
-      }
-    },
-    .primitive_type = SG_PRIMITIVETYPE_TRIANGLE_STRIP,
-  });
-  
-  sg_crt.bind.vertex_buffers[0] = sg_make_buffer(&(sg_buffer_desc){
-    .size = sizeof(crt_quad),
-    .type = SG_BUFFERTYPE_VERTEXBUFFER,
-    .usage = SG_USAGE_IMMUTABLE,
-    .data = SG_RANGE(crt_quad),
-    
-    .label = "crt vert buffer",
-  });
 }
 
 HMM_Mat4 projection = {0.f};
diff --git a/source/engine/render.h b/source/engine/render.h
index 071c06f..20e4110 100644
--- a/source/engine/render.h
+++ b/source/engine/render.h
@@ -15,6 +15,7 @@
 #include "HandmadeMath.h"
 #include "gameobject.h"
 #include "transform.h"
+#include "model.h"
 
 #define RGBA_MAX 255
 
@@ -33,7 +34,6 @@ extern HMM_Mat4 hudproj;
 extern HMM_Mat4 useproj;
 extern sg_pass_action pass_action;
 
-extern sg_buffer sprite_quad;
 extern sg_sampler std_sampler;
 extern sg_sampler tex_sampler;
 
diff --git a/source/engine/simplex.h b/source/engine/simplex.h
index 847b44d..50b7420 100644
--- a/source/engine/simplex.h
+++ b/source/engine/simplex.h
@@ -21,18 +21,18 @@ typedef union NoiseUnion {
     noiseNDptr pn;
 } genericNoise;
 
-extern double Noise2D(double x, double y);
-extern double Noise3D(double x, double y, double z);
-extern double Noise4D(double x, double y, double z, double w);
+double Noise2D(double x, double y);
+double Noise3D(double x, double y, double z);
+double Noise4D(double x, double y, double z, double w);
 
-extern double GBlur1D(double stdDev, double x);
-extern double GBlur2D(double stdDev, double x, double y);
+double GBlur1D(double stdDev, double x);
+double GBlur2D(double stdDev, double x, double y);
 
-extern double Noise(genericNoise func, int len, double args[]);
+double Noise(genericNoise func, int len, double args[]);
 
-extern double TurbulentNoise(genericNoise func, int direction, int iterations, int len, double args[]);
-extern double FractalSumNoise(genericNoise func, int iterations, int len, double args[]);
-extern double FractalSumAbsNoise(genericNoise func, int iterations, int len, double args[]);
+double TurbulentNoise(genericNoise func, int direction, int iterations, int len, double args[]);
+double FractalSumNoise(genericNoise func, int iterations, int len, double args[]);
+double FractalSumAbsNoise(genericNoise func, int iterations, int len, double args[]);
 
 double octave_3d(double x, double y, double z, int octaves, double persistence);
 
diff --git a/source/engine/yugine.c b/source/engine/yugine.c
index db4f8cd..7967d29 100644
--- a/source/engine/yugine.c
+++ b/source/engine/yugine.c
@@ -63,7 +63,6 @@ void c_init() {
   window_resize(sapp_width(), sapp_height());
   phys2d_init();  
   render_init();
-  particle_init();
   if (!JS_IsUndefined(c_start)) {
     script_call_sym(c_start,0,NULL);
     JS_FreeValue(js, c_start);
diff --git a/source/shaders/bezier.sglsl b/source/shaders/bezier.sglsl
deleted file mode 100644
index d244ea6..0000000
--- a/source/shaders/bezier.sglsl
+++ /dev/null
@@ -1,19 +0,0 @@
-@vs vs
-in vec2 pos;
-
-uniform vs_p { mat4 proj; };
-
-void main()
-{
-  gl_Position = proj * vec4(pos,0.0,1.0);
-}
-@end
-
-@fs fs
-void main()
-{
-
-}
-@end
-
-@program particle vs fs
\ No newline at end of file
diff --git a/source/shaders/billboardfrag.glsl b/source/shaders/billboardfrag.glsl
deleted file mode 100644
index 6d42cd3..0000000
--- a/source/shaders/billboardfrag.glsl
+++ /dev/null
@@ -1,3 +0,0 @@
-void main(){
-    color = texture( myTextureSampler, UV );
-}
\ No newline at end of file
diff --git a/source/shaders/billboardvertex.glsl b/source/shaders/billboardvertex.glsl
deleted file mode 100644
index 210e71c..0000000
--- a/source/shaders/billboardvertex.glsl
+++ /dev/null
@@ -1,11 +0,0 @@
-void main(){
-
-    // Output position of the vertex, in clip space
-    // map [0..800][0..600] to [-1..1][-1..1]
-    vec2 vertexPosition_homoneneousspace = vertexPosition_screenspace - vec2(400,300); // [0..800][0..600] -> [-400..400][-300..300]
-    vertexPosition_homoneneousspace /= vec2(400,300);
-    gl_Position =  vec4(vertexPosition_homoneneousspace,0,1);
-
-    // UV of the vertex. No special space for this one.
-    UV = vertexUV;
-}
\ No newline at end of file
diff --git a/source/shaders/btdebugfrag.glsl b/source/shaders/btdebugfrag.glsl
deleted file mode 100644
index a38cbd2..0000000
--- a/source/shaders/btdebugfrag.glsl
+++ /dev/null
@@ -1,9 +0,0 @@
-#version 330 core
-layout (location = 0) out vec4 color;
-
-in vec3 vcolor;
-
-void main(void)
-{
-    color = vec4(vcolor, 1.f);   
-}
\ No newline at end of file
diff --git a/source/shaders/btdebugvert.glsl b/source/shaders/btdebugvert.glsl
deleted file mode 100644
index b3ff788..0000000
--- a/source/shaders/btdebugvert.glsl
+++ /dev/null
@@ -1,17 +0,0 @@
-#version 330 core
-layout (location = 0) in vec3 position;
-layout (location = 1) in vec3 color;
-
-layout (std140) uniform Matrices {
-    mat4 projection;
-    mat4 view;
-};
-
-out vec3 vcolor;
-
-void main()
-{
-    gl_Position = projection * view * vec4(position, 1.0f);
-
-    vcolor = color;
-}
\ No newline at end of file
diff --git a/source/shaders/diffuse.sglsl b/source/shaders/diffuse.sglsl
deleted file mode 100644
index 7808cb1..0000000
--- a/source/shaders/diffuse.sglsl
+++ /dev/null
@@ -1,136 +0,0 @@
-@vs vs
-in vec3 a_pos;
-in vec2 a_tex_coords;
-in vec3 a_norm;
-
-out vec2 tex_coords;
-out vec3 normal;
-out vec3 frag_pos;
-out vec4 frag_pos_light;
-
-uniform vs_p {
-uniform mat4 vp;
-uniform mat4 model;
-uniform mat4 proj;
-uniform mat4 lsm;
-};
-
-void main() {
-  frag_pos = vec3(model * vec4(a_pos, 1.0));
-  gl_Position = proj * vp * vec4(frag_pos, 1.0);  
-  tex_coords = a_tex_coords;
-  normal = mat3(transpose(inverse(model))) * a_norm;
-  frag_pos_light = lsm * vec4(frag_pos, 1.0);
-}
-@end
-
-@fs fs
-in vec2 tex_coords;
-in vec3 normal;
-in vec3 frag_pos;
-in vec4 frag_pos_light;
-
-out vec4 frag_color;
-
-uniform texture2D diffuse;
-uniform texture2D normmap;
-uniform texture2D shadow_map;
-uniform sampler smp;
-
-uniform fs_p {
-uniform vec3 point_pos;
-uniform vec3 dir_dir;
-uniform vec3 view_pos;
-uniform vec3 spot_pos;
-uniform vec3 spot_dir;
-uniform vec2 shadow_dim;
-};
-/* Ambient light */
-float amb_str = 0.3;
-
-vec3 amb_color = vec3(1,1,1);
-
-float spec_str = 0.5;
-
-/* point */
-float constant = 1;
-float linear = 0.09;
-float quad = 0.032;
-
-/* spotlight */
-float cutoff = 12.5; /* cutoff in radians */
-float outer_cutoff = 17.5;
-
-vec3 norm = vec3(0,0,0);
-vec3 view = vec3(0,0,0);
-
-float light_str(vec3 dir)
-{
-  float d = max(dot(norm, dir), 0.0);
-  vec3 refl = reflect(-dir, norm);
-  float s = pow(max(dot(view,refl), 0.0), 32);
-
-  return s+d;
-}
-
-float shadow_calc(vec4 fg)
-{
-  vec3 pc = fg.xyz / fg.w;
-  pc = pc * 0.5 + 0.5;
-  
-  if (pc.z > 1.0)
-    return 0.0;
-
-  float closest_depth = texture(sampler2D(shadow_map,smp), pc.xy).r;
-  float cur_depth = pc.z;
-
-  vec3 light_dir = normalize(vec3(4,100,20) - frag_pos); /* light pos */
-  float bias = max(0.05 * (1 - dot(norm, light_dir)), 0.005);
-
-  return cur_depth - bias > closest_depth ? 1.0 : 0.0;
-
-  float s;
-  vec2 texel_size = 1 / shadow_dim;
-
-  for (int x = -1; x <= 1; ++x) {
-    for (int y = -1; y <= 1; ++y) {
-      float pcf_depth = texture(sampler2D(shadow_map,smp), pc.xy + vec2(x,y) * texel_size).r;
-      s += cur_depth - bias > pcf_depth ? 1.0 : 0.0;
-    }
-  }
-
-  s /= 9.0;
-
-  return s;
-}
-
-void main() {
-  norm = normalize(normal);
-  view = normalize(view_pos - frag_pos);
-
-  float point_amt = light_str(normalize(point_pos-frag_pos));
-  float dist = length(point_pos - frag_pos);
-  float atten = 1.0 / (constant + linear * dist + quad * (dist*dist));
-  point_amt *= atten;
-  
-  float dir_amt = light_str(normalize(-dir_dir));
-
-  vec3 spot_dir = normalize(spot_pos - frag_pos);
-  float theta = dot(spot_dir, normalize(-spot_dir));
-  float spot_amt = 0;
-
-  float epsilon = cutoff - outer_cutoff;
-
-  if (theta > cutoff) {
-    float intensity = clamp((theta - outer_cutoff)/epsilon,0.0,1.0);
-    spot_amt = light_str(spot_dir) * intensity;
-  }
-
-  vec4 mm = texture(sampler2D(diffuse,smp),tex_coords);
-  float shadow = shadow_calc(frag_pos_light);
-  vec3 res = mm.rgb * (amb_str + (point_amt + dir_amt) * (1 - shadow));
-  frag_color = vec4(res, mm.a);
-}
-@end
-
-@program diffuse vs fs
diff --git a/source/shaders/particle.sglsl b/source/shaders/particle.sglsl
deleted file mode 100644
index ebbce34..0000000
--- a/source/shaders/particle.sglsl
+++ /dev/null
@@ -1,44 +0,0 @@
-@vs vs
-in vec2 vertex;
-in vec2 apos;
-in float angle;
-in vec2 scale;
-in vec4 vc;
-
-out vec4 fcolor;
-out vec2 uv;
-
-uniform vs_p { mat4 proj; };
-
-void main()
-{
-  fcolor = vc;
-  uv = vertex;
-  vec2 v = vertex - 0.5;
-  vec2 p = vec2(
-    cos(angle)*v.x-sin(angle)*v.y,
-    sin(angle)*v.x+cos(angle)*v.y
-  );
-  p *= scale;
-  p += apos;
-
-  gl_Position = proj * vec4(p, 0.0, 1.0);
-}
-@end
-
-@fs fs
-in vec4 fcolor;
-out vec4 color;
-
-in vec2 uv;
-uniform texture2D image;
-uniform sampler smp;
-
-void main()
-{
-  color = texture(sampler2D(image,smp),uv);
-  color *= fcolor;
-}
-@end
-
-@program particle vs fs
\ No newline at end of file