Correct metal rendering

source/engine/3d/model.c

@@ -44,15 +44,6 @@ cgltf_attribute *get_attr_type(cgltf_primitive *p, cgltf_attribute_type t)
 
 unsigned short pack_short_tex(float c) { return c * USHRT_MAX; }
 
-uint32_t pack_int10_n2(float *norm)
-{
-  uint32_t ret = 0;
-  for (int i = 0; i < 3; i++) {
-    int n = (norm[i]+1.0)*511;
-    ret |= (n & 0x3ff) << (10*i);
-  }
-  return ret;
-}
 
 void mesh_add_material(primitive *prim, cgltf_material *mat)
 {
@@ -124,8 +115,19 @@ sg_buffer index_buffer(float *f, int verts)
   });
 }
 
+uint32_t pack_int10_n2(float *norm)
+{
+  uint32_t ret = 0;
+  for (int i = 0; i < 3; i++) {
+    int n = (norm[i]+1.0)*511;
+    ret |= (n & 0x3ff) << (10*i);
+  }
+  return ret;
+}
+
 sg_buffer normal_floats(float *f, int n)
 {
+  return float_buffer(f, 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);
@@ -179,13 +181,14 @@ HMM_Vec3 index_to_vert(uint32_t idx, float *f)
 
 void primitive_gen_indices(primitive *prim)
 {
-  if (prim->idx_count == 0) return;
+  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){
+  prim->index = sg_make_buffer(&(sg_buffer_desc){
     .data.ptr = idxs,
     .data.size = sizeof(uint16_t) * prim->idx_count,
     .type = SG_BUFFERTYPE_INDEXBUFFER});
@@ -206,7 +209,7 @@ struct primitive mesh_add_primitive(cgltf_primitive *prim)
     for (int i = 0; i < n; i++)
       idxs[i] = fidx[i];
 
-    retp.idx = sg_make_buffer(&(sg_buffer_desc){
+    retp.index = sg_make_buffer(&(sg_buffer_desc){
       .data.ptr = idxs,
       .data.size = sizeof(*idxs) * n,
       .type = SG_BUFFERTYPE_INDEXBUFFER,
@@ -497,7 +500,7 @@ sg_bindings primitive_bind(primitive *p)
   b.vertex_buffers[MAT_BONE] = p->bone;
   b.vertex_buffers[MAT_WEIGHT] = p->weight;
   b.vertex_buffers[MAT_COLOR] = p->color;
-  b.index_buffer = p->idx;
+  b.index_buffer = p->index;
   b.fs.images[0] = p->mat->diffuse->id;
   b.fs.samplers[0] = tex_sampler;
   return b;
@@ -540,6 +543,7 @@ int mat2type(int mat)
 {
   switch(mat) {
     case MAT_POS:
+    case MAT_NORM:
       return SG_VERTEXFORMAT_FLOAT3;
     case MAT_PPOS:
     case MAT_WH:
@@ -548,7 +552,6 @@ int mat2type(int mat)
     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;
@@ -605,7 +608,7 @@ sg_bindings primitive_bindings(primitive *p, JSValue v)
     b.vertex_buffers[slot] = buf;
   }
   
-  b.index_buffer = p->idx;
+  b.index_buffer = p->index;
   
   return b;
 }

source/engine/3d/model.h

@@ -43,7 +43,7 @@ typedef struct primitive {
   sg_buffer bone;
   sg_buffer weight;
   sg_buffer color;
-  sg_buffer idx;
+  sg_buffer index;
   material *mat;
   uint32_t idx_count;
 } primitive;

source/engine/HandmadeMath.c

@@ -1229,6 +1229,18 @@ HMM_Mat4 HMM_InvOrthographic(HMM_Mat4 OrthoMatrix) {
   return Result;
 }
 
+HMM_Mat4 HMM_Perspective_Metal(float FOV, float AspectRatio, float Near, float Far)
+{
+  HMM_Mat4 adjust = {0};
+  adjust.e[0][0] = 1;
+  adjust.e[1][1] = 1;
+  adjust.e[2][2] = 0.5;
+  adjust.e[3][2] = 0.5;
+  adjust.e[3][3] = 1;
+  HMM_Mat4 opengl = HMM_Perspective_LH_NO(FOV, AspectRatio, Near, Far);
+  return HMM_MulM4(opengl,adjust);
+}
+
 HMM_Mat4 HMM_Perspective_RH_NO(float FOV, float AspectRatio, float Near, float Far) {
 
   HMM_Mat4 Result = {0};
@@ -1747,7 +1759,8 @@ HMM_Mat4 HMM_M4TRS(HMM_Vec3 t, HMM_Quat q, HMM_Vec3 s)
   HMM_Mat4 T = HMM_Translate(t);
   HMM_Mat4 R = HMM_QToM4(q);
   HMM_Mat4 S = HMM_Scale(s);
-  return HMM_MulM4(T,S);
+  return HMM_MulM4(T, HMM_MulM4(R, S));
+  //return HMM_MulM4(T,S);
   HMM_Mat4 l;
   float *lm = (float*)&l;
   

source/engine/HandmadeMath.h

@@ -615,6 +615,8 @@ HMM_Mat4 HMM_Perspective_RH_NO(float FOV, float AspectRatio, float Near, float F
 HMM_Mat4 HMM_Perspective_RH_ZO(float FOV, float AspectRatio, float Near, float Far);
 HMM_Mat4 HMM_Perspective_LH_NO(float FOV, float AspectRatio, float Near, float Far);
 HMM_Mat4 HMM_Perspective_LH_ZO(float FOV, float AspectRatio, float Near, float Far);
+
+HMM_Mat4 HMM_Perspective_Metal(float FOV, float AspectRation, float Near, float Far);
 HMM_Mat4 HMM_InvPerspective_RH(HMM_Mat4 PerspectiveMatrix);
 HMM_Mat4 HMM_InvPerspective_LH(HMM_Mat4 PerspectiveMatrix);
 HMM_Mat4 HMM_Translate(HMM_Vec3 Translation);

source/engine/jsffi.c

@@ -44,6 +44,8 @@ static JSValue globalThis;
 static JSClassID js_ptr_id;
 static JSClassDef js_ptr_class = { "POINTER" };
 
+static JSValue JSUNDEF;
+
 JSValue str2js(const char *c, ...) {
   if (!c) return JS_UNDEFINED;
   char *result = NULL;
@@ -81,7 +83,6 @@ QJSCLASS(material)
 QJSCLASS(model)
 QJSCLASS(window)
 QJSCLASS(constraint)
-QJSCLASS(primitive)
 QJSCLASS(sg_buffer)
 QJSCLASS(datastream)
 
@@ -666,27 +667,27 @@ JSC_CCALL(render_end_pass,
         .clear_value = (sg_color){0,0,0,1}
       }
     }
-    });
+  });
   sg_pipeline p = {0};
   
   switch(mainwin.mode) {
     case MODE_STRETCH:
-      sg_apply_viewportf(0,0,mainwin.size.x,mainwin.size.y,1);
+      sg_apply_viewportf(0,0,mainwin.size.x,mainwin.size.y,0);
       break;
     case MODE_WIDTH:
-      sg_apply_viewportf(0, mainwin.top, mainwin.size.x, mainwin.psize.y,1); // keep width
+      sg_apply_viewportf(0, mainwin.top, mainwin.size.x, mainwin.psize.y,0); // keep width
       break;
     case MODE_HEIGHT:
-      sg_apply_viewportf(mainwin.left,0,mainwin.psize.x, mainwin.size.y,1); // keep height
+      sg_apply_viewportf(mainwin.left,0,mainwin.psize.x, mainwin.size.y,0); // keep height
       break;
     case MODE_KEEP:
-      sg_apply_viewportf(0,0,mainwin.rendersize.x, mainwin.rendersize.y, 1); // no scaling
+      sg_apply_viewportf(0,0,mainwin.rendersize.x, mainwin.rendersize.y, 0); // no scaling
       break;
     case MODE_EXPAND:
       if (mainwin.aspect < mainwin.raspect)
-        sg_apply_viewportf(0, mainwin.top, mainwin.size.x, mainwin.psize.y,1); // keep width
+        sg_apply_viewportf(0, mainwin.top, mainwin.size.x, mainwin.psize.y,0); // keep width
       else
-        sg_apply_viewportf(mainwin.left,0,mainwin.psize.x, mainwin.size.y,1); // keep height
+        sg_apply_viewportf(mainwin.left,0,mainwin.psize.x, mainwin.size.y,0); // keep height
       break;
   }
   p.id = js2number(argv[0]);
@@ -702,23 +703,23 @@ JSC_CCALL(render_end_pass,
   sg_commit();
 )
 
+JSC_CCALL(render_commit, sg_commit())
+
 JSC_SCALL(render_text_size, ret = bb2js(text_bb(str, js2number(argv[1]), js2number(argv[2]), 1)))
 
 JSC_CCALL(render_set_camera,
   JSValue cam = argv[0];
   int ortho = js2boolean(js_getpropstr(cam, "ortho"));
-  int near = js2number(js_getpropstr(cam, "near"));
+  float near = js2number(js_getpropstr(cam, "near"));
-  int far = js2number(js_getpropstr(cam, "far"));
+  float far = js2number(js_getpropstr(cam, "far"));
-  float fov = js2number(js_getpropstr(cam, "fov"));
+  float fov = js2number(js_getpropstr(cam, "fov"))*HMM_DegToRad;
-  HMM_Vec4 viewport = js2vec4(js_getpropstr(cam, "viewport"));
   
   transform *t = js2transform(js_getpropstr(cam, "transform"));
   globalview.v = transform2mat(*t);
   HMM_Vec2 size = mainwin.mode == MODE_FULL ? mainwin.size : mainwin.rendersize;
-  sg_apply_viewportf(viewport.x*size.x, viewport.y*size.y, viewport.z*size.x, viewport.w*size.y,1);
   
   if (ortho)
-    globalview.p = HMM_Orthographic_RH_NO(
+    globalview.p = HMM_Orthographic_LH_ZO(
       -size.x/2,
       size.x/2,
       -size.y/2,
@@ -727,10 +728,9 @@ JSC_CCALL(render_set_camera,
       far
     );
   else
-    globalview.p = HMM_Perspective_RH_NO(fov, size.y/size.x, near, far);
+    globalview.p = HMM_Perspective_Metal(fov, size.x/size.y, near, far);
     
   globalview.vp = HMM_MulM4(globalview.p, globalview.v);
-  projection = globalview.vp;
 )
 
 sg_shader js2shader(JSValue v)
@@ -830,12 +830,17 @@ JSC_CCALL(render_pipeline,
   p.layout = js2layout(argv[0]);
   p.cull_mode = js2number(js_getpropstr(argv[0], "cull"));
   p.primitive_type = js2number(js_getpropstr(argv[0], "primitive"));
+  //p.face_winding = js2number(js_getpropstr(argv[0], "face"));
+  p.face_winding = 1;
   p.index_type = SG_INDEXTYPE_UINT16;
   if (js2boolean(js_getpropstr(argv[0], "blend")))
     p.colors[0].blend = blend_trans;
     
-  //p.depth.write_enabled = true;
+  int depth = js2boolean(js_getpropstr(argv[0], "depth"));
-  //p.depth.compare = SG_COMPAREFUNC_LESS_EQUAL;
+  if (depth) {
+    p.depth.write_enabled = true;
+    p.depth.compare = SG_COMPAREFUNC_LESS;
+  }
   
   sg_pipeline pipe = sg_make_pipeline(&p);
 
@@ -872,7 +877,15 @@ JSC_CCALL(render_setuniv4,
 )
 
 JSC_CCALL(render_setuniproj,
-  sg_apply_uniforms(js2number(argv[0]), js2number(argv[1]), SG_RANGE_REF(projection));
+  sg_apply_uniforms(js2number(argv[0]), js2number(argv[1]), SG_RANGE_REF(globalview.p));
+)
+
+JSC_CCALL(render_setuniview,
+  sg_apply_uniforms(js2number(argv[0]), js2number(argv[1]), SG_RANGE_REF(globalview.v));
+)
+
+JSC_CCALL(render_setunivp,
+  sg_apply_uniforms(js2number(argv[0]), js2number(argv[1]), SG_RANGE_REF(globalview.vp));
 )
 
 JSC_CCALL(render_setunim4,
@@ -914,7 +927,7 @@ JSC_CCALL(render_text_ssbo,
 
 static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, flushtext, 0),
-  MIST_FUNC_DEF(render, end_pass, 0),
+  MIST_FUNC_DEF(render, end_pass, 2),
   MIST_FUNC_DEF(render, text_size, 3),
   MIST_FUNC_DEF(render, text_ssbo, 0),
   MIST_FUNC_DEF(render, set_camera, 1),
@@ -923,10 +936,13 @@ static const JSCFunctionListEntry js_render_funcs[] = {
   MIST_FUNC_DEF(render, setuniv, 2),
   MIST_FUNC_DEF(render, spdraw, 1),
   MIST_FUNC_DEF(render, setuniproj, 2),
+  MIST_FUNC_DEF(render, setuniview, 2),
+  MIST_FUNC_DEF(render, setunivp, 2),
   MIST_FUNC_DEF(render, setunim4, 3),
   MIST_FUNC_DEF(render, setuniv2, 2),
   MIST_FUNC_DEF(render, setuniv4, 2),
-  MIST_FUNC_DEF(render, setpipeline, 1)
+  MIST_FUNC_DEF(render, setpipeline, 1),
+  MIST_FUNC_DEF(render, commit, 0),
 };
 
 JSC_CCALL(gui_flush, text_flush());
@@ -1386,15 +1402,15 @@ JSC_GETSET(transform, rotation, quat)
 JSC_CCALL(transform_lookat,
   HMM_Vec3 point = js2vec3(argv[0]);
   transform *go = js2transform(this);
-  HMM_Mat4 m = HMM_LookAt_RH(go->pos, point, vUP);
+  HMM_Mat4 m = HMM_LookAt_LH(go->pos, point, vUP);
-  go->rotation = HMM_M4ToQ_RH(m);
+  go->rotation = HMM_M4ToQ_LH(m);
 )
 
 JSC_CCALL(transform_rotate,
   HMM_Vec3 axis = js2vec3(argv[0]);
   transform *t = js2transform(this);
-  HMM_Quat rot = HMM_QFromAxisAngle_RH(axis, js2number(argv[1]));
+  HMM_Quat rot = HMM_QFromAxisAngle_LH(axis, js2number(argv[1]));
-  t->rotation = HMM_MulQ(t->rotation, rot);
+  t->rotation = HMM_MulQ(rot, t->rotation);
 )
 
 static const JSCFunctionListEntry js_transform_funcs[] = {
@@ -1849,7 +1865,34 @@ JSC_CCALL(os_make_font,
 JSC_CCALL(os_make_transform, return transform2js(make_transform()))
 
 JSC_SCALL(os_system, return number2js(system(str)); )
-JSC_SCALL(os_make_model, ret = model2js(model_make(str)))
+
+#define PRIMCHECK(VAR, JS, VAL) \
+if (VAR->VAL.id) js_setpropstr(JS, #VAL, sg_buffer2js(&VAR->VAL)); \
+
+JSValue primitive2js(primitive *p)
+{
+  JSValue v = JS_NewObject(js);
+  PRIMCHECK(p, v, pos)
+  PRIMCHECK(p,v,norm)
+  PRIMCHECK(p,v,uv)
+  PRIMCHECK(p,v,bone)
+  PRIMCHECK(p,v,weight)
+  PRIMCHECK(p,v,color)
+  PRIMCHECK(p,v,index)
+  js_setpropstr(v, "count", number2js(p->idx_count));
+  
+  printf("new primitive with count %d\n", p->idx_count);
+  
+  return v;
+}
+
+JSC_SCALL(os_make_model,
+  model *m = model_make(str);
+  if (arrlen(m->meshes) != 1) return JSUNDEF;
+  mesh *me = m->meshes+0;
+  
+  return primitive2js(me->primitives+0);
+)
 JSC_CCALL(os_make_emitter,
   emitter *e = make_emitter();
   ret = emitter2js(e);
@@ -2052,6 +2095,7 @@ static const JSCFunctionListEntry js_os_funcs[] = {
 #include "steam.h"
 
 void ffi_load() {
+  JSUNDEF = JS_UNDEFINED;
   globalThis = JS_GetGlobalObject(js);
   
   QJSCLASSPREP(ptr);

source/engine/particle.c

@@ -95,7 +95,6 @@ void emitter_draw(emitter *e)
 }
 
 void emitter_step(emitter *e, double dt, transform *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++) {

source/engine/render.c

@@ -148,6 +148,9 @@ void render_init() {
 
   font_init();
   
+  sg_features feat = sg_query_features();
+  printf("top left? %d\n", feat.origin_top_left);
+
   sg_color c = (sg_color){0,0,0,1};
   pass_action = (sg_pass_action){
     .colors[0] = {.load_action = SG_LOADACTION_CLEAR, .clear_value = c},
@@ -155,7 +158,12 @@ void render_init() {
   
   sg_color oc = (sg_color){35.0/255,60.0/255,92.0/255,1};
   off_action = (sg_pass_action){
-    .colors[0] = {.load_action = SG_LOADACTION_CLEAR, .clear_value = oc}
+    .colors[0] = {.load_action = SG_LOADACTION_CLEAR, .clear_value = oc},
+    .depth = {
+      .load_action = SG_LOADACTION_CLEAR,
+      .clear_value = 1
+      //.store_action = SG_STOREACTION_STORE
+    }
   };
   
   screencolor = sg_make_image(&(sg_image_desc){
@@ -176,11 +184,10 @@ void render_init() {
   offscreen = (sg_pass){
     .attachments = sg_make_attachments(&(sg_attachments_desc){
       .colors[0].image = screencolor,
-      .depth_stencil.image = screendepth
+      .depth_stencil.image = screendepth,
     }),
     .action = off_action,
   };
-    
 }
 
 HMM_Mat4 projection = {0.f};
@@ -219,6 +226,7 @@ void openglRender(struct window *window) {
   };
  }
  lastuse = usesize;
+ 
  sg_begin_pass(&offscreen);
 }
 

source/engine/transform.c

@@ -6,6 +6,7 @@ transform *make_transform()
 {
   transform *t = calloc(sizeof(transform),1);
   t->scale = (HMM_Vec3){1,1,1};
+  t->rotation = (HMM_Quat){0,0,0,1};
   return t;
 }
 
@@ -46,7 +47,7 @@ HMM_Mat4 transform2mat(transform t) {
 
 HMM_Quat angle2rotation(float angle)
 {
-  return HMM_QFromAxisAngle_RH(vUP, angle);
+  return HMM_QFromAxisAngle_LH(vUP, angle);
 }
 
 float transform2angle(HMM_Vec3 axis)
@@ -62,6 +63,6 @@ transform mat2transform(HMM_Mat4 m)
     t.scale.Elements[i] = HMM_LenV3(m.Columns[i].xyz);
 //  for (int i = 0; i < 2; i++)
 //    m.Columns[i].xyz = HMM_MulV3(m.Columns[i].xyz, t.scale.Elements[i]);
-  t.rotation = HMM_M4ToQ_RH(m);
+  t.rotation = HMM_M4ToQ_LH(m);
   return t;
 }

source/engine/transform.h

@@ -4,9 +4,11 @@
 #include "HandmadeMath.h"
 
 typedef struct transform {
-    HMM_Vec3 pos;
+  HMM_Vec3 pos;
-    HMM_Vec3 scale;
+  HMM_Vec3 scale;
-    HMM_Quat rotation;
+  HMM_Quat rotation;
+  HMM_Mat4 cache;
+  int dirty;
 } transform;
 
 transform *make_transform();