added previewscript

Author: schteppe

Diff for: previewScript.js

@@ -0,0 +1,78 @@
+'use strict';
+
+/* global goo */
+
+var setup = function (args, ctx) {
+	var RenderTarget = goo.RenderTarget;
+	var MeshData = goo.MeshData;
+	var Shader = goo.Shader;
+	var Quad = goo.Quad;
+	var MeshDataComponent = goo.MeshDataComponent;
+	var MeshRendererComponent = goo.MeshRendererComponent;
+	var Material = goo.Material;
+	var FullscreenUtils = goo.FullscreenUtils;
+	var Transform = goo.Transform;
+
+	var shader = {
+		attributes: {
+			vertexPosition: 'POSITION',
+			vertexUV0: 'TEXCOORD0'
+		},
+		uniforms: {},
+		vshader: [
+			'attribute vec3 vertexPosition;',
+			'attribute vec2 vertexUV0;',
+			'varying vec2 textureCoord;',
+
+			'void main(void) {',
+			'   textureCoord = vertexUV0;',
+			'	gl_Position = vec4(vertexPosition.xy, 0.0, 1.0);',
+			'}'
+		].join('\n'),
+		fshader: [
+			'varying vec2 textureCoord;',
+
+			'void main(void){',
+			'	gl_FragColor = vec4(textureCoord.xy, 0.0, 1.0);',
+			'}'
+		].join('\n')
+	};
+
+	var renderable = {
+		meshData: FullscreenUtils.quad,
+		materials: [new Material(shader)],
+		transform: new Transform()
+	};
+
+	var size = 64;
+	var renderer = ctx.world.gooRunner.renderer;
+
+	ctx.renderTarget = new RenderTarget(size, size);
+	renderer.render(renderable, FullscreenUtils.camera, [], ctx.renderTarget, true);
+	var pixels = new Uint8Array(size * size * 4);
+	renderer.readPixels(0,0,size,size,pixels);
+
+	// Draw the pixels to a canvas element
+	var canvas = document.createElement('CANVAS');
+	canvas.width = canvas.height = size;
+	var context = canvas.getContext('2d');
+	var imgData = context.createImageData(size, size);
+	imgData.data.set(pixels);
+	context.putImageData(imgData,0,0);
+
+	var texture = new goo.Texture(canvas, {
+		wrapS: 'EdgeClamp',
+		wrapT: 'EdgeClamp'
+	}, size, size);
+	ctx.entity.meshRendererComponent.materials[0].setTexture('DIFFUSE_MAP', texture);
+};
+
+var cleanup = function (args, ctx) {
+	ctx.entity.meshRendererComponent.materials[0].removeTexture('DIFFUSE_MAP');
+};
+
+var update = function (args, ctx) {
+
+};
+
+var parameters = [];