Added init struct (resource loading helpers)

sunpy/canvas/__init__.js

@@ -0,0 +1,10 @@
+// Depends
+import "../core/__init__.js";
+import "../node/__init__.js";
+
+// Map
+import "./entity.js";
+import "./helpers.js";
+import "./renderer.js";
+
+import "./gl/texture.js";

sunpy/canvas/entity.js

@@ -8,5 +8,11 @@ export class Sprite extends Entity {
     constructor(image) {
         if (!(image instanceof Image)) 
             throw TypeError("Image has to be instance of `Image`");
+        
+        this.image = image;
+    }
+
+    async render(renderNode) {
+        
     }
 }

sunpy/canvas/gl/shaders/texture.fs

@@ -0,0 +1,9 @@
+precision mediump float;
+
+uniform sampler2D u_texture;
+
+varying vec2 v_texcoord;
+
+void main() {
+    gl_FragColor = texture2D(u_texture, v_texcoord);
+}

sunpy/canvas/gl/shaders/texture.vs

@@ -0,0 +1,11 @@
+attribute vec4 position;
+attribute vec2 texcoord;
+
+uniform mat4 u_matrix;
+
+varying vec2 v_texcoord;
+
+void main() {
+    gl_Position = u_matrix * position;
+    v_texcoord = texcoord;
+}

sunpy/canvas/gl/texture.js

@@ -0,0 +1,23 @@
+//const fs = await (await fetch("./shaders/texture.fs")).text();
+
+export async function compile() {
+    /*
+    const fs = await (await fetch("./shaders/texture.fs")).text();
+    const vs = await (await fetch("./shaders/texture.vs")).text();
+    */
+
+    const fs = import("./shaders/texture.fs");
+    const vs = import("./shaders/texture.vs");
+
+    window.fs = fs;
+    window.vs = vs;
+    console.log("done");
+}
+
+export function drawImage(gl, tex, texWidth, texHeight, dstX, dstY) {
+    gl.bindTexture(gl.TEXTURE_2D, tex);
+
+    gl.useProgram(program); // TODO
+
+
+}