textures, window fixes

build/build.sh

@@ -1,2 +1,3 @@
 SCRIPT_REL_DIR=$(dirname "${BASH_SOURCE[0]}")
 $SCRIPT_REL_DIR/build_.sh debug win32 intel
+$SCRIPT_REL_DIR/build_.sh debug wasm intel

build/build_.sh

@@ -126,6 +126,7 @@ add_flag CompilerFlags_win32 "-wd4505" #
 add_flag CompilerFlags_win32 "-wd4100" #
 add_flag CompilerFlags_win32 "-wd4189" #
 add_flag CompilerFlags_win32 "-wd4702" #
+add_flag CompilerFlags_win32 "-wd4996" # _CRT_SECURE_NO_WARNINGS
 
 CompilerFlags_osx=""
 
@@ -143,6 +144,7 @@ CompilerFlags_DEBUG_win32=""
 add_flag CompilerFlags_DEBUG_win32 "-Od" #
 add_flag CompilerFlags_DEBUG_win32 "-Zi" #
 add_flag CompilerFlags_DEBUG_win32 "-DDEBUG" #
+add_flag CompilerFlags_DEBUG_win32 "-DPRINT_ASSERTS"
 
 CompilerFlags_DEBUG="-O0"
 add_flag CompilerFlags_DEBUG "-g" #

run_tree/wasm/debug/lumenarium_wasm_imports.js

@@ -34,6 +34,35 @@ function wasm_get_proc(inst, proc_ptr)
 
 function fract (v) { return v % 1; }
 
+function u32_to_byte_array_32 (v) 
+{
+  let result = [0, 0, 0, 0];
+  result[0] = (v & 0xff);
+  result[1] = (((v - result[0]) >> 8 ) & 0xff);
+  result[2] = (((v - result[1]) >> 16) & 0xff);
+  result[3] = (((v - result[2]) >> 24) & 0xff);
+  return result;
+}
+
+function byte_array_32_to_u32 (arr)
+{
+  // NOTE(PS): the '>>>' operators in this function deal with the fact
+  // that bit shift operators convert numbers to s32's. The >>> just
+  // converts them back to u32s
+  let r0 =  ((arr[0] & 0xff) << 0 );
+  let r1 =  ((arr[1] & 0xff) << 8 );
+  let r2 =  ((arr[2] & 0xff) << 16);
+  let r3 = (((arr[3] & 0xff) << 24) >>> 0);
+  let result = (r0 | r1 | r2 | r3) >>> 0;
+  return result;
+}
+
+function put_u32 (ptr, value)
+{
+  let src = u32_to_byte_array_32(value);
+  wasm_write_bytes(lumenarium_wasm_instance, src, ptr, 4);
+}
+
 var lumenarium_wasm_imports = {
   
   memset: (dst, size, value) => {
@@ -122,12 +151,46 @@ var lumenarium_wasm_imports = {
     let string = wasm_read_string(lumenarium_wasm_instance, str_base, len);
     console.log(string);
   },
+  
+  wasm_get_canvas_dim: (w_ptr, h_ptr) => {
+    const canvas = document.querySelector("#gl_canvas");
+    
+    let w_view = wasm_mem_get_u8_arr(lumenarium_wasm_instance, w_ptr, 4);
+    let w = canvas.width;
+    let wb = u32_to_byte_array_32(w);
+    for (let i = 0; i < 4; i++) w_view[i] = wb[i];
+    
+    let h_view = wasm_mem_get_u8_arr(lumenarium_wasm_instance, h_ptr, 4);
+    let h = canvas.height;
+    let hb = u32_to_byte_array_32(h);
+    for (let i = 0; i < 4; i++) h_view[i] = hb[i];
+  },
 };
 
 ///////////////////////////////////////
 // Web GL Imports
 
 let gl = null;
+let gl_error = false;
+
+function glErrorReport(outer_args) { 
+  const err = gl.getError();
+  if (err == gl.NO_ERROR) return;
+  
+  gl_error = true;
+  let msg = "";
+  switch (err) {
+    case gl.NO_ERROR:                      { msg = "NO_ERROR"; } break;
+    case gl.INVALID_ENUM:                  { msg = "INVALID_ENUM"; } break;
+    case gl.INVALID_VALUE:                 { msg = "INVALID_VALUE"; } break;
+    case gl.INVALID_OPERATION:             { msg = "INVALID_OPERATION"; } break;
+    case gl.INVALID_FRAMEBUFFER_OPERATION: { msg = "INVALID_FRAMEBUFFER_OPERATION"; } break;
+    case gl.OUT_OF_MEMORY:                 { msg = "OUT_OF_MEMORY"; } break;
+    case gl.CONTEXT_LOST_WEBGL:            { msg = "CONTEXT_LOST_WEBGL"; } break;
+    default:                               { msg = "Uknown error"; } break;
+  }
+  console.error(`WebGL Error: ${msg} ${err}`, outer_args);
+}
 
 // NOTE(PS): it seems like its not enough to set 
 // the values of imports to gl.function
@@ -135,16 +198,37 @@ let gl = null;
 // instead we need to wrap them for some reason. 
 // Not sure why
 function glClearColor (r, g, b, a) { return gl.clearColor(r,g,b,a); }
-function glEnable(v) { return gl.enable(v); }
+function glEnable(v) { 
-function glDisable(v) { return gl.disable(v); }
+  const r = gl.enable(v); 
-function glBlendFunc(a,b) { return gl.blendFunc(a,b); }
+  glErrorReport(arguments);
+  return r;
+}
+function glDisable(v) { 
+  const r = gl.disable(v); 
+  glErrorReport(arguments);
+  return r;
+}
+function glBlendFunc(a,b) { 
+  const r = gl.blendFunc(a,b); 
+  glErrorReport(arguments);
+  return r;
+}
 function glViewport(xmin, ymin, xmax, ymax) { return gl.viewport(xmin,ymin,xmax,ymax); }
-function glDepthFunc(v) { return gl.depthFunc(v); }
+function glDepthFunc(v) { 
-function glClear(mask) { return gl.clear(mask); }
+  const r = gl.depthFunc(v); 
+  glErrorReport(arguments);
+  return r;
+}
+function glClear(mask) { 
+  const r = gl.clear(mask); 
+  glErrorReport(arguments);
+  return r;
+}
 
 let glBuffers = [];
 let glShaders = [];
 let glPrograms = [];
+let glTextures = [];
 function gl_get_managed_resource(arr, id) {
   if (id == 0) return null;
   return arr[id - 1];
@@ -152,55 +236,76 @@ function gl_get_managed_resource(arr, id) {
 function gl_get_buffer(id) { return gl_get_managed_resource(glBuffers, id); }
 function gl_get_shader(id) { return gl_get_managed_resource(glShaders, id); }
 function gl_get_program(id) { return gl_get_managed_resource(glPrograms, id); }
+function gl_get_texture(id) { return gl_get_managed_resource(glTextures, id); }
 
 function glCreateBuffer() { 
   let buffer = gl.createBuffer(); 
+  glErrorReport(arguments);
   let new_len = glBuffers.push(buffer);
   return new_len;
 }
+
 function glBindBuffer(buffer_kind, buffer_id) 
 {
-  return gl.bindBuffer(buffer_kind, gl_get_buffer(buffer_id));
+  const r = gl.bindBuffer(buffer_kind, gl_get_buffer(buffer_id));
+  glErrorReport(arguments);
+  return r;
 }
+
 function glBufferData(target, size, ptr, usage)
 {
   let data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, ptr, size);
-  return gl.bufferData(target, data, usage);
+  const r = gl.bufferData(target, data, usage);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glCreateShader(kind)
 {
   let shader = gl.createShader(kind);
+  glErrorReport(arguments);
   let new_len = glShaders.push(shader);
   return new_len;
 }
+
 function glShaderSource(shader_id, shader_code, shader_code_len)
 {
   let str = wasm_read_string(lumenarium_wasm_instance, shader_code, shader_code_len);
-  console.error("For some reason, str isn't getting the correct data out of here", str);
+  const r = gl.shaderSource(gl_get_shader(shader_id), str);
-  return gl.shaderSource(gl_get_shader(shader_id), str);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glCompileShader(shader_id)
 {
   let s = gl_get_shader(shader_id);
   let r = gl.compileShader(s);
+  glErrorReport(arguments);
   let m = gl.getShaderInfoLog(s);
+  glErrorReport(arguments);
   if (m.length > 0)
   {
     console.error("glCompileShader: \n\n" + m);
   }
 }
+
 function glCreateProgram()
 {
   let prog = gl.createProgram();
+  glErrorReport(arguments);
   let new_len = glPrograms.push(prog);
   return new_len;
 }
+
 function glAttachShader(program, shader)
 {
   let s = gl_get_shader(shader);
   let p = gl_get_program(program);
-  return gl.attachShader(p, s);
+  const r = gl.attachShader(p, s);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glLinkProgram(program)
 {
   let p = gl_get_program(program);
@@ -210,43 +315,94 @@ function glLinkProgram(program)
     console.error("Failed to compile WebGL program. \n\n"+info);
   }
 }
+
 function glUseProgram(program)
 {
   let p = gl_get_program(program);
-  return gl.useProgram(p);
+  const r = gl.useProgram(p);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glGetAttribLocation(program, name, name_len)
 {
   let str = wasm_read_string(lumenarium_wasm_instance, name, name_len);
-  return gl.getAttribLocation(gl_get_program(program), str);
+  const r = gl.getAttribLocation(gl_get_program(program), str);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glVertexAttribPointer(attr, size, type, normalized, stride, pointer)
 {
-  return gl.vertexAttribPointer(attr, size, type, normalized, stride, pointer);
+  const r = gl.vertexAttribPointer(attr, size, type, normalized, stride, pointer);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glEnableVertexAttribArray(index)
 {
-  return gl.enableVertexAttribArray(index);
+  const r = gl.enableVertexAttribArray(index);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glDrawElements(type, index_count, ele_type, indices)
 {
-  return gl.drawElements(type, index_count, ele_type, indices);
+  const r = gl.drawElements(type, index_count, ele_type, indices);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glGenTextures(count, ids_ptr, ids_size)
+{
+  for (let i = 0; i < count; i++)
+  {
+    const tex = gl.createTexture();
+    glErrorReport(arguments);
+    let new_len = glTextures.push(tex);
+    put_u32(ids_ptr + (i * 4), new_len);
+  }
+}
+
+function glBindTexture(slot, id)
+{
+  let tex = gl_get_texture(id);
+  const r = gl.bindTexture(slot, tex);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexParameteri(slot, param, value)
+{
+  const r = gl.texParameteri(slot, param, value);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexImage2D(target, level, internalformat, width, height, border, format, type, data_ptr, data_size)
+{
+  const data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, data_ptr, data_size);
+  const r = gl.texImage2D(target, level, internalformat, width, height, border, format, type, data);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexSubImage2D(target, level, offsetx, offsety, width, height, format, type, data_ptr, data_size)
+{
+  const data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, data_ptr, data_size);
+  const r = gl.texSubImage2D(target, level, offsetx, offsety, width, height, format, type, data);
+  glErrorReport(arguments);
+  return r;
 }
 
 function webgl_add_imports (canvas_selector, imports) {
   const canvas = document.querySelector(canvas_selector);
   if (!canvas) return console.error("no canvas");
   
-  gl = canvas.getContext("webgl");
+  gl = canvas.getContext("webgl2");
   if (gl === null) return console.error("no webgl ctx");
   
-  console.log(
+  imports.glHadError = () => { return gl_error; };
-              gl.FLOAT.toString(16), "\n",
-              gl.UNSIGNED_INT.toString(16), "\n"
-              );
-  
-  
-  
   imports.glClearColor = glClearColor;
   imports.glEnable = glEnable;
   imports.glDisable = glDisable;
@@ -269,6 +425,11 @@ function webgl_add_imports (canvas_selector, imports) {
   imports.glVertexAttribPointer = glVertexAttribPointer;
   imports.glEnableVertexAttribArray = glEnableVertexAttribArray;
   imports.glDrawElements = glDrawElements;
-  
+  imports.glGenTextures = glGenTextures;
+  imports.glBindTexture = glBindTexture;
+  imports.glTexParameteri = glTexParameteri;
+  imports.glTexImage2D = glTexImage2D;
+  imports.glTexSubImage2D = glTexSubImage2D;
+  imports.glBindTexture = glBindTexture;
   return imports;
 }

run_tree/win32/intel/debug/err.txt

@@ -0,0 +1 @@
+OpenGL Version: 3.3.0 - Build 27.20.100.9778

src_v2/editor/lumenarium_editor.cpp

@@ -1,8 +1,101 @@
 
+static r32 z_ = 0;
+static r32 r_ = 0.3f;
+static r32 quad_verts[] = {
+  -r_,  -r_,  z_,  1.0f,  0, 0,
+  r_, -r_,  z_,  1.0f,    1, 0,
+  r_, r_,  z_,  1.0f,     1, 1,
+  -r_,  r_,  z_,  1.0f,   0, 1,
+};
+
+static u32 quad_indices[] = {
+  0, 1, 2,
+  0, 2, 3,
+};
+
+static String shader_code_vert_win32 = lit_str(
+                                               "#version 330 core\n"
+                                               "layout (location = 0) in vec4 coordinates;\n"
+                                               "layout (location = 1) in vec2 uv;\n"
+                                               "out vec2 tex_coord;\n"
+                                               "void main(void) {\n"
+                                               "  gl_Position = coordinates;\n"
+                                               "  tex_coord = uv;\n"
+                                               "}"
+                                               );
+
+static String shader_code_vert_wasm = lit_str(
+                                              "precision highp float;\n"
+                                              "attribute vec4 coordinates;\n"
+                                              "attribute vec2 uv;\n"
+                                              "varying vec2 tex_coord;\n"
+                                              "void main(void) {\n"
+                                              "  gl_Position = coordinates;\n"
+                                              "  tex_coord = uv;\n"
+                                              "}");
+
+static String shader_code_frag_win32 = lit_str(
+                                               "#version 330 core\n"
+                                               "in vec2 tex_coord;\n"
+                                               "out vec4 FragColor;\n"
+                                               "uniform sampler2D texture;\n"
+                                               "void main(void) {\n"
+                                               "//  FragColor = vec4(1,tex_coord.x,tex_coord.y,1);\n"
+                                               "  FragColor = texture(texture, tex_coord);\n"
+                                               "}"
+                                               );
+
+static String shader_code_frag_wasm = lit_str(
+                                              "precision highp float;\n"
+                                              "varying vec2 tex_coord;\n"
+                                              "uniform sampler2D texture;\n"
+                                              "void main(void) {\n"
+                                              "  gl_FragColor = texture2D(texture, tex_coord);\n"
+                                              "  // vec4(1, tex_coord.x, tex_coord.y, 1);\n"
+                                              "}");
+
+static u32 pix[] = {
+  0xFF000000, 0xFFFFFFFF, 0xFF000000, 0xFFFFFFFF,
+  0xFFFFFFFF, 0xFF000000, 0xFFFFFFFF, 0xFF000000,
+  0xFF000000, 0xFFFFFFFF, 0xFF000000, 0xFFFFFFFF,
+  0xFFFFFFFF, 0xFF000000, 0xFFFFFFFF, 0xFF000000,
+};
+
+void make_quad(Platform_Geometry_Buffer* geo, Platform_Shader* shd, Platform_Texture* tex)
+{
+  // TODO(PS): TEMP
+#if defined(PLATFORM_win32)
+  String shader_code_vert = shader_code_vert_win32;
+  String shader_code_frag = shader_code_frag_win32;
+#elif defined(PLATFORM_wasm)
+  String shader_code_vert = shader_code_vert_wasm;
+  String shader_code_frag = shader_code_frag_wasm;
+#endif
+  
+  *geo = platform_geometry_buffer_create(
+                                         quad_verts, 24, quad_indices, 6
+                                         );
+  
+  String attribs[] = { 
+    lit_str("coordinates"),
+    lit_str("uv"),
+  };
+  *shd = platform_shader_create(
+                                shader_code_vert, shader_code_frag, attribs, 2
+                                );
+  
+  platform_vertex_attrib_pointer(*geo, *shd, 4, shd->attrs[0], 6, 0);
+  platform_vertex_attrib_pointer(*geo, *shd, 2, shd->attrs[1], 6, 4);
+  
+  *tex = platform_texture_create((u8*)pix, 4, 4, 4);
+}
+
 internal void
 ed_init(App_State* state)
 {
-  
+  Editor* editor = allocator_alloc_struct(permanent, Editor);
+  state->editor = editor;
+  make_quad(&editor->renderer.geo, &editor->renderer.shd, &editor->renderer.tex);
 }
 
 internal void
@@ -14,6 +107,13 @@ ed_frame_prepare(App_State* state)
 internal void
 ed_frame(App_State* state)
 {
+  for (u32 i = 0; i < 16; i++)
+  {
+    if (i % 2 == 1) continue;
+    pix[i] += 1;
+  }
+  platform_texture_update(state->editor->renderer.tex, (u8*)pix, 4, 4, 4);
+  
   edr_render(state);
 }
 

src_v2/editor/lumenarium_editor.h

@@ -0,0 +1,12 @@
+/* date = March 27th 2022 0:50 pm */
+
+#ifndef LUMENARIUM_EDITOR_H
+#define LUMENARIUM_EDITOR_H
+
+struct Editor
+{
+  v2 window_dim;
+  Editor_Renderer renderer;
+};
+
+#endif //LUMENARIUM_EDITOR_H

src_v2/editor/lumenarium_editor_renderer.cpp

@@ -1,82 +1,4 @@
 
-internal void
-edr_init(App_State* state)
-{
-  v4 quad_verts[] = {
-    -0.5f,  0.5f,  0.0f,  1.0f,
-    -0.5f, -0.5f,  0.0f,  1.0f,
-    00.5f, -0.5f,  0.0f,  1.0f,
-    00.5f,  0.5f,  0.0f,  1.0f,
-  };
-  
-  u32 quad_indices[] = {
-    3, 2, 1,
-    3, 1, 0,
-  };
-  
-  char* shader_code_vert = 
-    "#version 140\n"
-    "attribute vec4 coordinates;\n"
-    "void main(void) {\n"
-    "  gl_Position = coordinates;\n"
-    "}";
-  
-  char* shader_code_frag = 
-    "#version 140\n"
-    "void main(void) {\n"
-    "  gl_FragColor = vec4(1, 0, 1, 1);\n"
-    "}";
-  
-#if 0
-  /* =======              Geometry                =======*/
-  
-  glCreateBuffers(1, &buffer_vertex);
-  glBindBuffer(GL_ARRAY_BUFFER, buffer_vertex);
-  glBufferData(GL_ARRAY_BUFFER, quad_verts, GL_STATIC_DRAW);
-  glBindBuffer(GL_ARRAY_BUFFER, NULL);
-  
-  glCreateBuffer(1, &buffer_index);
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer_index);
-  glBufferData(GL_ELEMENT_ARRAY_BUFFER, quad_indices, GL_STATIC_DRAW);
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, NULL);
-  
-  /* =======                Shaders                =======*/
-  
-  shader_vert = glCreateShader(GL_VERTEX_SHADER);
-  glShaderSource(shader_vertex, shader_code_vert);
-  glCompileShader(shader_vert);
-  
-  shader_frag = glCreateShader(GL_FRAGMENT_SHADER);
-  glShaderSource(shader_frag, shader_code_frag);
-  glCompileShader(shader_frag);
-  
-  shader_prog = glCreateProgram();
-  glAttachShader(shader_prog, shader_vert);
-  glAttachShader(shader_prog, shader_frag);
-  glLinkProgram(shader_prog);
-  glUseProgram(shader_prog);
-  
-  /* ======= Associating shaders to buffer objects =======*/
-  
-  glBindBuffer(GL_ARRAY_BUFFER, buffer_vertex);
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer_index);
-  coord = glGetAttribLocation(shader_prog, "coordinates");
-  glVertexAttribPointer(coord, 4, GL_FLOAT, false, 0, 0);
-  glEnableVertexAttribArray(coord);
-#endif
-}
-
-internal void
-edr_render_quad()
-{
-#if 0
-  glBindBuffer(GL_ARRAY_BUFFER, buffer_vertex);
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer_index);
-  glEnableVertexAttribArray(coord);
-  glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
-#endif
-}
-
 
 internal void
 edr_render(App_State* state)
@@ -84,11 +6,12 @@ edr_render(App_State* state)
   Platform_Graphics_Frame_Desc desc = {};
   desc.clear_color = { 0.1f, 0.1f, 0.1f, 1 };
   desc.viewport_min = { 0, 0 };
-  desc.viewport_max = { 1600, 900 };
+  desc.viewport_max = state->editor->window_dim;
   platform_frame_begin(desc);
   platform_frame_clear();
   
-#if 0
+  platform_geometry_bind(state->editor->renderer.geo);
-  edr_render_quad();
+  platform_texture_bind(state->editor->renderer.tex);
-#endif
+  platform_shader_bind(state->editor->renderer.shd);
+  platform_geometry_draw(state->editor->renderer.geo);
 }

src_v2/editor/lumenarium_editor_renderer.h

@@ -5,7 +5,9 @@
 
 struct Editor_Renderer
 {
-  
+  Platform_Shader shd;
+  Platform_Geometry_Buffer geo;
+  Platform_Texture tex;
 };
 
 #endif //LUMENARIUM_EDITOR_RENDERER_H

src_v2/editor/lumenarium_ui.h

@@ -0,0 +1,36 @@
+/* date = March 28th 2022 10:52 pm */
+
+#ifndef LUMENARIUM_UI_H
+#define LUMENARIUM_UI_H
+
+struct Font_Glyph
+{
+  u32 code_point;
+  v2 uv_min;
+  v2 uv_max;
+};
+
+struct Font_Glyph_Table
+{
+  Font_Glyph* values;
+  u32 cap;
+  u32 len;
+};
+
+struct Font_Bitmap
+{
+  u8* pixels;
+  u32 width;
+  u32 height;
+  u32 stride;
+  
+  Platform_Texture texture;
+};
+
+struct Font
+{
+  Font_Glyph_Table glyphs;
+  Font_Bitmap bitmap;
+};
+
+#endif //LUMENARIUM_UI_H

src_v2/lumenarium_first.cpp

@@ -1,73 +1,6 @@
 #include "lumenarium_first.h"
 #include "user_space/user_space_incenter.cpp"
 
-Platform_Geometry_Buffer quad0;
-Platform_Shader shader0;
-
-static r32 z_ = 0;
-static r32 r_ = 0.3f;
-static r32 quad_verts[] = {
-  -r_,  -r_,  z_,  1.0f,
-  r_, -r_,  z_,  1.0f,
-  r_, r_,  z_,  1.0f,
-  -r_,  r_,  z_,  1.0f,
-};
-
-static u32 quad_indices[] = {
-  0, 1, 2,
-  0, 2, 3,
-};
-
-static String shader_code_vert_win32 = lit_str(
-                                               "#version 330 core\n"
-                                               "layout (location = 0) in  vec4 coordinates;\n"
-                                               "void main(void) {\n"
-                                               "  gl_Position = coordinates;\n"
-                                               "}"
-                                               );
-
-static String shader_code_vert_wasm = lit_str(
-                                              "attribute vec4 coordinates;\n"
-                                              "void main(void) {\n"
-                                              "  gl_Position = coordinates;\n"
-                                              "}");
-
-static String shader_code_frag_win32 = lit_str(
-                                               "#version 330 core\n"
-                                               "out vec4 FragColor;\n"
-                                               "void main(void) {\n"
-                                               "  FragColor = vec4(1,0,1,1);\n"
-                                               "}"
-                                               );
-
-static String shader_code_frag_wasm = lit_str(
-                                              "void main(void) {\n"
-                                              "  gl_FragColor = vec4(1, 0, 1, 1);\n"
-                                              "}");
-
-void make_quad()
-{
-  // TODO(PS): TEMP
-#if defined(PLATFORM_win32)
-  String shader_code_vert = shader_code_vert_win32;
-  String shader_code_frag = shader_code_frag_win32;
-#elif defined(PLATFORM_wasm)
-  String shader_code_vert = shader_code_vert_wasm;
-  String shader_code_frag = shader_code_frag_wasm;
-#endif
-  
-  quad0 = platform_geometry_buffer_create(
-                                          quad_verts, 16, quad_indices, 6
-                                          );
-  
-  String attribs[] = { lit_str("coordinates") };
-  shader0 = platform_shader_create(
-                                   shader_code_vert, shader_code_frag, attribs, 1
-                                   );
-  
-  platform_vertex_attrib_pointer(quad0, shader0, 0);
-}
-
 internal App_State*
 lumenarium_init()
 {
@@ -76,7 +9,6 @@ lumenarium_init()
   permanent = bump_allocator_create_reserve(MB(4));
   scratch = bump_allocator_create_reserve(KB(64));
   
-  
   run_tests();
   
   App_Init_Desc desc = incenter_get_init_desc();
@@ -84,19 +16,16 @@ lumenarium_init()
   
   state = allocator_alloc_struct(permanent, App_State);
   add_flag(state->flags, AppState_IsRunning);
+  add_flag(state->flags, AppState_RunEditor);
   
   state->input_state = input_state_create();
   
   en_init(state, desc);
-  if (!has_flag(state->flags, AppState_NoEditor))
+  if (has_flag(state->flags, AppState_RunEditor))
   {
     ed_init(state);
   }
   incenter_init(state);
-  
-  
-  make_quad();
-  
   return state;
 }
 
@@ -108,7 +37,7 @@ lumenarium_frame_prepare(App_State* state)
   input_state_swap_frames(&state->input_state);
   
   en_frame_prepare(state);
-  if (!has_flag(state->flags, AppState_NoEditor))
+  if (has_flag(state->flags, AppState_RunEditor))
   {
     ed_frame_prepare(state);
   }
@@ -119,23 +48,9 @@ internal void
 lumenarium_frame(App_State* state)
 {
   en_frame(state);
-  if (!has_flag(state->flags, AppState_NoEditor))
+  if (has_flag(state->flags, AppState_RunEditor))
   {
-    //ed_frame(state);
+    ed_frame(state);
-    
-    Platform_Graphics_Frame_Desc desc = {};
-    desc.clear_color = { 0.1f, 0.1f, 0.1f, 1 };
-    desc.viewport_min = { 0, 0 };
-    desc.viewport_max = { 1600, 900 };
-    platform_frame_begin(desc);
-    platform_frame_clear();
-    
-    
-    platform_geometry_bind(quad0);
-    platform_shader_bind(shader0);
-    platform_geometry_draw(quad0);
-    
-    
   }
   incenter_frame(state);
 }
@@ -176,7 +91,7 @@ lumenarium_cleanup(App_State* state)
 {
   incenter_cleanup(state);
   en_cleanup(state);
-  if (!has_flag(state->flags, AppState_NoEditor))
+  if (has_flag(state->flags, AppState_RunEditor))
   {
     ed_cleanup(state);
   }

src_v2/lumenarium_first.h

@@ -15,6 +15,7 @@ typedef struct App_State App_State;
 
 // Editor
 #include "editor/lumenarium_editor_renderer.h"
+#include "editor/lumenarium_editor.h"
 
 //////////////////////////////////////////////
 //    Lumenarium Runtime Environment
@@ -36,7 +37,7 @@ enum
 {
   AppState_None = 0,
   AppState_IsRunning = 1,
-  AppState_NoEditor = 2,
+  AppState_RunEditor = 2,
 };
 
 struct App_Init_Desc
@@ -50,6 +51,8 @@ struct App_State
   
   Input_State input_state;
   Assembly_Array assemblies;
+  
+  Editor* editor;
 };
 
 #include "engine/lumenarium_engine_assembly.cpp"

src_v2/lumenarium_string.cpp

@@ -7,7 +7,8 @@ c_str_len(char* s)
   return result;
 }
 
-#define str_varg(str) (int)(str).len, (char*)(str).str
+#define str_varg(s) (int)(s).len, (char*)(s).str
+#define str_expand(s) (char*)(s).str, (u64)(s).len
 #define lit_str(s) String{ (u8*)(s), (u64)sizeof(s)-1, (u64)sizeof(s)-1 } 
 
 internal String

src_v2/platform/lumenarium_assert.h

@@ -3,27 +3,47 @@
 #ifndef LUMENARIUM_ASSERT_H
 #define LUMENARIUM_ASSERT_H
 
+#if defined(PRINT_ASSERTS)
+#  include <stdio.h>
+#  define err_write(s,...) err_write_(s,__VA_ARGS__)
+static FILE* file_err;
+void err_write_(char* fmt, ...) {
+  if (!file_err) return;
+  va_list args;
+  va_start(args, fmt);
+  vfprintf(file_err, fmt, args);
+  va_end(args);
+}
+void open_err_file() { file_err = fopen("./err.txt", "wb"); }
+void close_err_file() { fclose(file_err); }
+#else
+#  define err_write(s,...)
+void open_err_file() {}
+void close_err_file() {}
+#endif
+
 #if !defined(PLATFORM_wasm)
+
 // this assert works by simply trying to write to an invalid address
 // (in this case, 0x0), which will crash in most debuggers
 #  define assert_always (*((volatile s32*)0) = 0xFFFF)
 
 #else
-WASM_EXTERN void wasm_assert_always(char* file, u32 file_len, u32 line);
+WASM_EXTERN void wasm_assert_always(char* file, unsigned int file_len, unsigned int line);
 #  define assert_always wasm_assert_always(__FILE__, sizeof(__FILE__), __LINE__)
 #endif // defined(PLATFORM_WASM)
 
 #ifdef USE_ASSERTS
-#  define assert(c) if (!(c)) { assert_always; }
+#  define assert(c) if (!(c)) { err_write("Assert Hit: %s:%d\n", __FILE__, (u32)__LINE__); close_err_file(); assert_always; }
 
 // useful for catching cases that you aren't sure you'll hit, but
 // want to be alerted when they happen
-#  define invalid_code_path assert_always
+#  define invalid_code_path assert(0);
 
 // useful for switch statements on enums that might grow. You'll
 // break in the debugger the first time the default case is hit
 // with a new enum value
-#  define invalid_default_case default: { assert_always; } break;
+#  define invalid_default_case default: { assert(0); } break;
 
 #else
 #  define assert(c)

src_v2/platform/lumenarium_platform.h

@@ -309,6 +309,13 @@ struct Platform_Geometry_Buffer
   u32 indices_len;
 };
 
+struct Platform_Texture
+{
+  u32 id;
+  
+  u32 w, h, s;
+};
+
 struct Platform_Graphics_Frame_Desc
 {
   v4 clear_color;
@@ -319,18 +326,23 @@ struct Platform_Graphics_Frame_Desc
 void platform_frame_begin(Platform_Graphics_Frame_Desc desc);
 void platform_frame_clear();
 
+// Geometry
 Platform_Geometry_Buffer platform_geometry_buffer_create(r32* vertices, u32 vertices_len, u32* indices, u32 indices_len);
 Platform_Shader platform_shader_create(
                                        String code_vert, String code_frag, String* attribs, u32 attribs_len
                                        );
-void platform_vertex_attrib_pointer(
-                                    Platform_Geometry_Buffer geo, Platform_Shader shader, u32 attrib_index
-                                    );
 
+// Shaders
 void platform_geometry_bind(Platform_Geometry_Buffer geo);
 void platform_shader_bind(Platform_Shader shader);
 void platform_geometry_draw(Platform_Geometry_Buffer geo);
 void platform_vertex_attrib_pointer(
-                                    Platform_Geometry_Buffer geo, Platform_Shader shader, u32 attr_index
+                                    Platform_Geometry_Buffer geo, Platform_Shader shader, u32 count, u32 attr_index, u32 stride, u32 offset
                                     );
+
+// Textures
+Platform_Texture platform_texture_create(u8* pixels, u32 width, u32 height, u32 stride);
+void platform_texture_bind(Platform_Texture tex);
+void platform_texture_update(Platform_Texture tex, u8* new_pixels, u32 width, u32 height, u32 stride);
+
 #endif //LUMENARIUM_PLATFORM_H

src_v2/platform/lumenarium_platform_common_includes.h

@@ -13,9 +13,13 @@
 
 #include "lumenarium_assert.h"
 
+// NOTE(PS): only need the opengl extension headers
+// when running on a platform that is using opengl 3.3+
+#if !defined(PLATFORM_wasm)
 #  include "glcorearb.h"
 #  include "glext.h"
 #  include "wglext.h"
+#endif
 
 #if 0
 #define HMM_SINF sin

src_v2/platform/wasm/lumenarium_first_wasm.cpp

@@ -25,6 +25,8 @@ WASM_EXTERN void print(const char* text, int len);
 typedef void wasm_animation_frame_cb(u32 time_elapsed);
 WASM_EXTERN void wasm_request_animation_frame(wasm_animation_frame_cb* cb);
 
+WASM_EXTERN void wasm_get_canvas_dim(u32* w_ptr, u32* h_ptr);
+
 EXTERN_C_BEGIN;
 
 int 
@@ -46,14 +48,25 @@ update(u32 time_elapsed)
   lumenarium_frame(wasm_app_state);
   
   // TODO(PS): check for app running flags
+  if (!glHadError())
+  {
     wasm_request_animation_frame(update);
   }
+}
 
 WASM_EXPORT int
 main(void) 
 { 
   wasm_app_state = lumenarium_init();
-  //wasm_request_animation_frame(update);
+  if (has_flag(wasm_app_state->flags, AppState_RunEditor))
+  {
+    u32 w, h;
+    wasm_get_canvas_dim(&w, &h);
+    wasm_app_state->editor->window_dim = v2{
+      (r32)w, (r32)h
+    };
+  }
+  wasm_request_animation_frame(update);
   return 0;
   
 #if 0

src_v2/platform/wasm/lumenarium_wasm_imports.js

@@ -34,6 +34,35 @@ function wasm_get_proc(inst, proc_ptr)
 
 function fract (v) { return v % 1; }
 
+function u32_to_byte_array_32 (v) 
+{
+  let result = [0, 0, 0, 0];
+  result[0] = (v & 0xff);
+  result[1] = (((v - result[0]) >> 8 ) & 0xff);
+  result[2] = (((v - result[1]) >> 16) & 0xff);
+  result[3] = (((v - result[2]) >> 24) & 0xff);
+  return result;
+}
+
+function byte_array_32_to_u32 (arr)
+{
+  // NOTE(PS): the '>>>' operators in this function deal with the fact
+  // that bit shift operators convert numbers to s32's. The >>> just
+  // converts them back to u32s
+  let r0 =  ((arr[0] & 0xff) << 0 );
+  let r1 =  ((arr[1] & 0xff) << 8 );
+  let r2 =  ((arr[2] & 0xff) << 16);
+  let r3 = (((arr[3] & 0xff) << 24) >>> 0);
+  let result = (r0 | r1 | r2 | r3) >>> 0;
+  return result;
+}
+
+function put_u32 (ptr, value)
+{
+  let src = u32_to_byte_array_32(value);
+  wasm_write_bytes(lumenarium_wasm_instance, src, ptr, 4);
+}
+
 var lumenarium_wasm_imports = {
   
   memset: (dst, size, value) => {
@@ -122,12 +151,46 @@ var lumenarium_wasm_imports = {
     let string = wasm_read_string(lumenarium_wasm_instance, str_base, len);
     console.log(string);
   },
+  
+  wasm_get_canvas_dim: (w_ptr, h_ptr) => {
+    const canvas = document.querySelector("#gl_canvas");
+    
+    let w_view = wasm_mem_get_u8_arr(lumenarium_wasm_instance, w_ptr, 4);
+    let w = canvas.width;
+    let wb = u32_to_byte_array_32(w);
+    for (let i = 0; i < 4; i++) w_view[i] = wb[i];
+    
+    let h_view = wasm_mem_get_u8_arr(lumenarium_wasm_instance, h_ptr, 4);
+    let h = canvas.height;
+    let hb = u32_to_byte_array_32(h);
+    for (let i = 0; i < 4; i++) h_view[i] = hb[i];
+  },
 };
 
 ///////////////////////////////////////
 // Web GL Imports
 
 let gl = null;
+let gl_error = false;
+
+function glErrorReport(outer_args) { 
+  const err = gl.getError();
+  if (err == gl.NO_ERROR) return;
+  
+  gl_error = true;
+  let msg = "";
+  switch (err) {
+    case gl.NO_ERROR:                      { msg = "NO_ERROR"; } break;
+    case gl.INVALID_ENUM:                  { msg = "INVALID_ENUM"; } break;
+    case gl.INVALID_VALUE:                 { msg = "INVALID_VALUE"; } break;
+    case gl.INVALID_OPERATION:             { msg = "INVALID_OPERATION"; } break;
+    case gl.INVALID_FRAMEBUFFER_OPERATION: { msg = "INVALID_FRAMEBUFFER_OPERATION"; } break;
+    case gl.OUT_OF_MEMORY:                 { msg = "OUT_OF_MEMORY"; } break;
+    case gl.CONTEXT_LOST_WEBGL:            { msg = "CONTEXT_LOST_WEBGL"; } break;
+    default:                               { msg = "Uknown error"; } break;
+  }
+  console.error(`WebGL Error: ${msg} ${err}`, outer_args);
+}
 
 // NOTE(PS): it seems like its not enough to set 
 // the values of imports to gl.function
@@ -135,16 +198,37 @@ let gl = null;
 // instead we need to wrap them for some reason. 
 // Not sure why
 function glClearColor (r, g, b, a) { return gl.clearColor(r,g,b,a); }
-function glEnable(v) { return gl.enable(v); }
+function glEnable(v) { 
-function glDisable(v) { return gl.disable(v); }
+  const r = gl.enable(v); 
-function glBlendFunc(a,b) { return gl.blendFunc(a,b); }
+  glErrorReport(arguments);
+  return r;
+}
+function glDisable(v) { 
+  const r = gl.disable(v); 
+  glErrorReport(arguments);
+  return r;
+}
+function glBlendFunc(a,b) { 
+  const r = gl.blendFunc(a,b); 
+  glErrorReport(arguments);
+  return r;
+}
 function glViewport(xmin, ymin, xmax, ymax) { return gl.viewport(xmin,ymin,xmax,ymax); }
-function glDepthFunc(v) { return gl.depthFunc(v); }
+function glDepthFunc(v) { 
-function glClear(mask) { return gl.clear(mask); }
+  const r = gl.depthFunc(v); 
+  glErrorReport(arguments);
+  return r;
+}
+function glClear(mask) { 
+  const r = gl.clear(mask); 
+  glErrorReport(arguments);
+  return r;
+}
 
 let glBuffers = [];
 let glShaders = [];
 let glPrograms = [];
+let glTextures = [];
 function gl_get_managed_resource(arr, id) {
   if (id == 0) return null;
   return arr[id - 1];
@@ -152,55 +236,76 @@ function gl_get_managed_resource(arr, id) {
 function gl_get_buffer(id) { return gl_get_managed_resource(glBuffers, id); }
 function gl_get_shader(id) { return gl_get_managed_resource(glShaders, id); }
 function gl_get_program(id) { return gl_get_managed_resource(glPrograms, id); }
+function gl_get_texture(id) { return gl_get_managed_resource(glTextures, id); }
 
 function glCreateBuffer() { 
   let buffer = gl.createBuffer(); 
+  glErrorReport(arguments);
   let new_len = glBuffers.push(buffer);
   return new_len;
 }
+
 function glBindBuffer(buffer_kind, buffer_id) 
 {
-  return gl.bindBuffer(buffer_kind, gl_get_buffer(buffer_id));
+  const r = gl.bindBuffer(buffer_kind, gl_get_buffer(buffer_id));
+  glErrorReport(arguments);
+  return r;
 }
+
 function glBufferData(target, size, ptr, usage)
 {
   let data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, ptr, size);
-  return gl.bufferData(target, data, usage);
+  const r = gl.bufferData(target, data, usage);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glCreateShader(kind)
 {
   let shader = gl.createShader(kind);
+  glErrorReport(arguments);
   let new_len = glShaders.push(shader);
   return new_len;
 }
+
 function glShaderSource(shader_id, shader_code, shader_code_len)
 {
   let str = wasm_read_string(lumenarium_wasm_instance, shader_code, shader_code_len);
-  console.error("For some reason, str isn't getting the correct data out of here", str);
+  const r = gl.shaderSource(gl_get_shader(shader_id), str);
-  return gl.shaderSource(gl_get_shader(shader_id), str);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glCompileShader(shader_id)
 {
   let s = gl_get_shader(shader_id);
   let r = gl.compileShader(s);
+  glErrorReport(arguments);
   let m = gl.getShaderInfoLog(s);
+  glErrorReport(arguments);
   if (m.length > 0)
   {
     console.error("glCompileShader: \n\n" + m);
   }
 }
+
 function glCreateProgram()
 {
   let prog = gl.createProgram();
+  glErrorReport(arguments);
   let new_len = glPrograms.push(prog);
   return new_len;
 }
+
 function glAttachShader(program, shader)
 {
   let s = gl_get_shader(shader);
   let p = gl_get_program(program);
-  return gl.attachShader(p, s);
+  const r = gl.attachShader(p, s);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glLinkProgram(program)
 {
   let p = gl_get_program(program);
@@ -210,43 +315,94 @@ function glLinkProgram(program)
     console.error("Failed to compile WebGL program. \n\n"+info);
   }
 }
+
 function glUseProgram(program)
 {
   let p = gl_get_program(program);
-  return gl.useProgram(p);
+  const r = gl.useProgram(p);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glGetAttribLocation(program, name, name_len)
 {
   let str = wasm_read_string(lumenarium_wasm_instance, name, name_len);
-  return gl.getAttribLocation(gl_get_program(program), str);
+  const r = gl.getAttribLocation(gl_get_program(program), str);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glVertexAttribPointer(attr, size, type, normalized, stride, pointer)
 {
-  return gl.vertexAttribPointer(attr, size, type, normalized, stride, pointer);
+  const r = gl.vertexAttribPointer(attr, size, type, normalized, stride, pointer);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glEnableVertexAttribArray(index)
 {
-  return gl.enableVertexAttribArray(index);
+  const r = gl.enableVertexAttribArray(index);
+  glErrorReport(arguments);
+  return r;
 }
+
 function glDrawElements(type, index_count, ele_type, indices)
 {
-  return gl.drawElements(type, index_count, ele_type, indices);
+  const r = gl.drawElements(type, index_count, ele_type, indices);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glGenTextures(count, ids_ptr, ids_size)
+{
+  for (let i = 0; i < count; i++)
+  {
+    const tex = gl.createTexture();
+    glErrorReport(arguments);
+    let new_len = glTextures.push(tex);
+    put_u32(ids_ptr + (i * 4), new_len);
+  }
+}
+
+function glBindTexture(slot, id)
+{
+  let tex = gl_get_texture(id);
+  const r = gl.bindTexture(slot, tex);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexParameteri(slot, param, value)
+{
+  const r = gl.texParameteri(slot, param, value);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexImage2D(target, level, internalformat, width, height, border, format, type, data_ptr, data_size)
+{
+  const data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, data_ptr, data_size);
+  const r = gl.texImage2D(target, level, internalformat, width, height, border, format, type, data);
+  glErrorReport(arguments);
+  return r;
+}
+
+function glTexSubImage2D(target, level, offsetx, offsety, width, height, format, type, data_ptr, data_size)
+{
+  const data = wasm_mem_get_u8_arr(lumenarium_wasm_instance, data_ptr, data_size);
+  const r = gl.texSubImage2D(target, level, offsetx, offsety, width, height, format, type, data);
+  glErrorReport(arguments);
+  return r;
 }
 
 function webgl_add_imports (canvas_selector, imports) {
   const canvas = document.querySelector(canvas_selector);
   if (!canvas) return console.error("no canvas");
   
-  gl = canvas.getContext("webgl");
+  gl = canvas.getContext("webgl2");
   if (gl === null) return console.error("no webgl ctx");
   
-  console.log(
+  imports.glHadError = () => { return gl_error; };
-              gl.FLOAT.toString(16), "\n",
-              gl.UNSIGNED_INT.toString(16), "\n"
-              );
-  
-  
-  
   imports.glClearColor = glClearColor;
   imports.glEnable = glEnable;
   imports.glDisable = glDisable;
@@ -269,6 +425,11 @@ function webgl_add_imports (canvas_selector, imports) {
   imports.glVertexAttribPointer = glVertexAttribPointer;
   imports.glEnableVertexAttribArray = glEnableVertexAttribArray;
   imports.glDrawElements = glDrawElements;
-  
+  imports.glGenTextures = glGenTextures;
+  imports.glBindTexture = glBindTexture;
+  imports.glTexParameteri = glTexParameteri;
+  imports.glTexImage2D = glTexImage2D;
+  imports.glTexSubImage2D = glTexSubImage2D;
+  imports.glBindTexture = glBindTexture;
   return imports;
 }

src_v2/platform/wasm/lumenarium_wasm_webgl.cpp

@@ -6,6 +6,7 @@
 // TODO(PS):  you guessed the data types and names of ALL of this
 // fix it!
 
+typedef int GLint;
 typedef unsigned int GLuint;
 typedef float GLfloat;
 typedef unsigned int GLenum;
@@ -35,9 +36,19 @@ typedef unsigned int GLsizei;
 #define GL_FRAGMENT_SHADER                0x8b30 
 #define GL_VERTEX_SHADER                  0x8b31 
 #define GL_TRIANGLES                      0x0004
-#define GL_UNSIGNED_INT                   0x1406
+#define GL_UNSIGNED_INT                   0x1405
-#define GL_FLOAT                          0x1405
+#define GL_FLOAT                          0x1406
+#define GL_TEXTURE_WRAP_S                 0x2802
+#define GL_TEXTURE_WRAP_T                 0x2803
+#define GL_REPEAT                         0x2901
+#define GL_TEXTURE_MIN_FILTER             0x2801
+#define GL_TEXTURE_MAG_FILTER             0x2800
+#define GL_LINEAR                         0x2601
+#define GL_RGB                            0x1907
+#define GL_RGBA                           0x1908
+#define GL_UNSIGNED_BYTE                  0x1401
 
+WASM_EXTERN bool glHadError();
 WASM_EXTERN void glClearColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
 WASM_EXTERN void glEnable(GLuint i);
 WASM_EXTERN void glDisable(GLuint i);
@@ -60,6 +71,12 @@ WASM_EXTERN GLuint glGetAttribLocation(GLuint program, const char* name, GLuint
 WASM_EXTERN void glVertexAttribPointer(GLuint attr, GLuint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer);
 WASM_EXTERN void glEnableVertexAttribArray(GLuint index);
 WASM_EXTERN void glDrawElements(GLenum type, GLuint count, GLenum ele_type, void* indices);
+WASM_EXTERN void glGenTextures(GLuint count, GLuint* ids, u32 ids_size);
+WASM_EXTERN void glBindTexture(GLenum slot, GLuint id);
+WASM_EXTERN void glTexParameteri(GLenum slot, GLenum param, GLenum value);
+WASM_EXTERN void glTexImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void * data, u32 data_size);
+WASM_EXTERN void glBindTexture(GLenum target, GLuint id);
+WASM_EXTERN void glTexSubImage2D(GLenum target, GLint level, GLuint offsetx, GLuint offsety, GLuint w, GLuint h, GLenum format, GLenum type, void* ptr, u32 ptr_size);
 
 Platform_Geometry_Buffer 
 platform_geometry_buffer_create(
@@ -97,13 +114,11 @@ platform_shader_create(
   Platform_Shader result = {};
   
   GLuint shader_vert = glCreateShader(GL_VERTEX_SHADER);
-  GLuint vert_len = (GLuint)code_vert.len;
+  glShaderSource(shader_vert, str_expand(code_vert));
-  glShaderSource(shader_vert, (char*)&code_vert.str, vert_len);
   glCompileShader(shader_vert);
   
   GLuint shader_frag = glCreateShader(GL_FRAGMENT_SHADER);
-  GLuint frag_len = (GLuint)code_frag.len;
+  glShaderSource(shader_frag, str_expand(code_frag));
-  glShaderSource(shader_frag, (char*)&code_frag.str, frag_len);
   glCompileShader(shader_frag);
   
   result.id = (GLuint)glCreateProgram();
@@ -138,7 +153,7 @@ void
 platform_shader_bind(Platform_Shader shader)
 {
   glUseProgram(shader.id);
-  for (GLuint i = 0; i < PLATFORM_SHADER_MAX_ATTRS && shader.attrs[i] != PLATFORM_SHADER_MAX_ATTRS; i++)
+  for (GLuint i = 0; i < PLATFORM_SHADER_MAX_ATTRS && shader.attrs[i] != PLATFORM_SHADER_ATTR_LAST; i++)
   {
     glEnableVertexAttribArray(shader.attrs[i]);
   }
@@ -152,11 +167,70 @@ platform_geometry_draw(
 }
 
 void platform_vertex_attrib_pointer(
-                                    Platform_Geometry_Buffer geo, Platform_Shader shader, GLuint attr_index
+                                    Platform_Geometry_Buffer geo, Platform_Shader shader, u32 count, u32 attr_index, u32 stride, u32 offset
                                     ){
-  platform_shader_bind(shader);
+  //platform_shader_bind(shader);
   platform_geometry_bind(geo);
-  glVertexAttribPointer(shader.attrs[attr_index], 4, GL_FLOAT, false, 0, 0);
+  glVertexAttribPointer(shader.attrs[attr_index], count, GL_FLOAT, false, stride * sizeof(float), (void*)(offset * sizeof(float)));
+}
+
+Platform_Texture
+platform_texture_create(u8* pixels, u32 width, u32 height, u32 stride)
+{
+  Platform_Texture result = {};
+  glGenTextures(1, &result.id, sizeof(u32));
+  glBindTexture(GL_TEXTURE_2D, result.id);
+  
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  
+  glTexImage2D(
+               GL_TEXTURE_2D, 
+               0, 
+               GL_RGBA, 
+               width, 
+               height, 
+               0,
+               GL_RGBA, 
+               GL_UNSIGNED_BYTE, 
+               pixels,
+               (width * height) * sizeof(u32) 
+               );
+  
+  result.w = width;
+  result.h = height;
+  result.s = stride;
+  
+  return result;
+}
+
+void
+platform_texture_update(Platform_Texture tex, u8* new_pixels, u32 width, u32 height, u32 stride)
+{
+  // NOTE(PS): this function simply replaces the entire image
+  // we can write a more granular version if we need it
+  
+  assert(tex.w == width && tex.h == height && tex.s == stride);
+  platform_texture_bind(tex);
+  glTexSubImage2D(
+                  GL_TEXTURE_2D,
+                  0,
+                  0, 0, // offset
+                  width, height, 
+                  GL_RGBA,
+                  GL_UNSIGNED_BYTE,
+                  new_pixels,
+                  width * height * sizeof(u32)
+                  );
+}
+
+
+void
+platform_texture_bind(Platform_Texture tex)
+{
+  glBindTexture(GL_TEXTURE_2D, tex.id);
 }
 
 void 

src_v2/platform/win32/lumenarium_first_win32.cpp

@@ -180,6 +180,8 @@ WinMain(
         PSTR lpCmdLine, 
         INT nCmdShow)
 {
+  open_err_file();
+  
   // Window Setup
   win32_window_create(
                       &win32_main_window, 
@@ -189,6 +191,7 @@ WinMain(
                       900, 
                       win32_window_event_handler
                       );
+  win32_window_update_dim(&win32_main_window);
   
   win32_time_init();
   win32_files_init();
@@ -230,6 +233,15 @@ WinMain(
     // using invalid resources
     if (!running || !has_flag(state->flags, AppState_IsRunning)) continue;
     
+    // Update window size
+    if (has_flag(state->flags, AppState_RunEditor))
+    {
+      state->editor->window_dim = v2{
+        (r32)win32_main_window.info.width,
+        (r32)win32_main_window.info.height
+      };
+    }
+    
     lumenarium_frame(state);
     
     SwapBuffers(win32_main_window.dc);
@@ -261,6 +273,8 @@ WinMain(
   
   // windows cleanup
   UnregisterClass(win32_main_window.window_class.lpszClassName, hInstance);
+  
+  close_err_file();
   return 0;
 }
 

src_v2/platform/win32/lumenarium_win32_graphics.cpp

@@ -1,12 +1,16 @@
 
-#define win32_gl_no_error() win32_gl_no_error_()
+#define win32_gl_no_error() win32_gl_no_error_(__FILE__, __LINE__)
-void win32_gl_no_error_() { 
+void win32_gl_no_error_(char* file, u32 line) { 
   u32 error = glGetError();
   char* str = 0;
   if (error) {
     str = win32_gl_error_to_string(error);
   }
-  assert(error == 0);
+  if (error != 0)
+  {
+    err_write("OpenGL error: %s:%d\n\t%s :: %d\n", file, line, str, error);
+    invalid_code_path;
+  }
 }
 
 Platform_Geometry_Buffer 
@@ -64,7 +68,7 @@ platform_shader_create(
   { // errors
     GLint shader_vert_compiled;
     gl.glGetShaderiv(shader_vert, GL_COMPILE_STATUS, &shader_vert_compiled);
-    if (shader_vert_compiled != GL_TRUE)
+    if (!shader_vert_compiled)
     {
       GLsizei log_length = 0;
       GLchar message[1024];
@@ -79,7 +83,7 @@ platform_shader_create(
   { // errors
     GLint shader_frag_compiled;
     gl.glGetShaderiv(shader_frag, GL_COMPILE_STATUS, &shader_frag_compiled);
-    if (shader_frag_compiled != GL_TRUE)
+    if (!shader_frag_compiled)
     {
       GLsizei log_length = 0;
       GLchar message[1024];
@@ -122,7 +126,7 @@ platform_shader_create(
 void
 platform_geometry_bind(Platform_Geometry_Buffer geo)
 {
-  gl.glBindVertexArray(geo.buffer_id_vertices);
+  gl.glBindVertexArray(geo.buffer_id_vao);
   win32_gl_no_error();
   
   gl.glBindBuffer(GL_ARRAY_BUFFER, geo.buffer_id_vertices);
@@ -155,15 +159,76 @@ platform_geometry_draw(
 }
 
 void platform_vertex_attrib_pointer(
-                                    Platform_Geometry_Buffer geo, Platform_Shader shader, u32 attr_index
+                                    Platform_Geometry_Buffer geo, Platform_Shader shader, GLuint count, GLuint attr_index, GLuint stride, GLuint offset
                                     ){
   platform_geometry_bind(geo);
-  gl.glVertexAttribPointer(shader.attrs[attr_index], 4, GL_FLOAT, false, 0, 0);
+  gl.glVertexAttribPointer(shader.attrs[attr_index], count, GL_FLOAT, false, stride * sizeof(float), (void*)(offset * sizeof(float)));
   win32_gl_no_error();
   gl.glEnableVertexAttribArray(shader.attrs[attr_index]);
   win32_gl_no_error();
 }
 
+Platform_Texture
+platform_texture_create(u8* pixels, u32 width, u32 height, u32 stride)
+{
+  Platform_Texture result = {};
+  glGenTextures(1, &result.id);
+  win32_gl_no_error();
+  
+  glBindTexture(GL_TEXTURE_2D, result.id);
+  win32_gl_no_error();
+  
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  win32_gl_no_error();
+  
+  glTexImage2D(
+               GL_TEXTURE_2D, 
+               0, 
+               GL_RGBA, 
+               width, 
+               height, 
+               0, 
+               GL_RGBA, 
+               GL_UNSIGNED_BYTE, 
+               pixels
+               );
+  win32_gl_no_error();
+  
+  result.w = width;
+  result.h = height;
+  result.s = stride;
+  
+  return result;
+}
+
+void
+platform_texture_update(Platform_Texture tex, u8* new_pixels, u32 width, u32 height, u32 stride)
+{
+  // NOTE(PS): this function simply replaces the entire image
+  // we can write a more granular version if we need it
+  
+  assert(tex.w == width && tex.h == height && tex.s == stride);
+  platform_texture_bind(tex);
+  glTexSubImage2D(
+                  GL_TEXTURE_2D,
+                  0,
+                  0, 0, // offset
+                  width, height, 
+                  GL_RGBA,
+                  GL_UNSIGNED_BYTE,
+                  new_pixels
+                  );
+}
+
+void
+platform_texture_bind(Platform_Texture tex)
+{
+  glBindTexture(GL_TEXTURE_2D, tex.id);
+  win32_gl_no_error();
+}
 
 void 
 platform_frame_begin(Platform_Graphics_Frame_Desc desc)
@@ -180,10 +245,10 @@ platform_frame_begin(Platform_Graphics_Frame_Desc desc)
   
   glDisable(GL_CULL_FACE);
   
-  //glDisable(GL_TEXTURE_2D);
-  
   glEnable(GL_DEPTH_TEST);
   glDepthFunc(GL_LESS);
+  
+  win32_gl_no_error();
 }
 
 void

src_v2/platform/win32/lumenarium_win32_window.cpp

@@ -96,7 +96,6 @@ win32_window_create(
                                          hinstance,
                                          0
                                          );
-    
     return true;
   }
   return false;
@@ -333,12 +332,8 @@ win32_window_opengl_ctx_create_ext(HDC dc, Win32_Window_OpenGL_Info* info)
     invalid_code_path;
   }
   
-#if 0
+  char* version_string = (char*)glGetString(GL_VERSION);
-  //char* version_string = (char*)glGetString(GL_VERSION);
+  err_write("OpenGL Version: %s\n", version_string);
-  OutputDebugStringA("OpenGL Version: ");
-  OutputDebugStringA(version_string);
-  OutputDebugStringA("\n");
-#endif
 }
 
 internal void