mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-06 07:14:55 +08:00
149 lines
4.0 KiB
HTML
149 lines
4.0 KiB
HTML
<html>
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<script src="../../build/spine-webgl.js"></script>
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<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
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<style>
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* { margin: 0; padding: 0; }
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body, html { height: 100% }
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canvas { width: 640px ;height: 640px; }
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</style>
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<body>
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<canvas id="canvas" style="background: #ff00ff;"></canvas>
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<div>
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<div><label>Light: </label><input type="text" value="ffffffff" id="light"></div>
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<div><label>Dark: </label><input type="text" value="000000" id="dark"></div>
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<div><label>PMA blend:</label><input type="checkbox" id="pmaBlend"></div>
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<div><label>Ivan's shader:</label><input type="checkbox" id="ivan"></div>
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</div>
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</body>
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<script>
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$("#light").change(function() {
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setColors();
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});
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$("#dark").change(function() {
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setColors();
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});
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$("#pmaBlend").change(function() {
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setColors();
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});
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function setColors() {
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var light = $("#light").val();
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var r = parseInt(light.substr(0,2),16) / 255;
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var g = parseInt(light.substr(2,2),16) / 255;
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var b = parseInt(light.substr(4,2),16) / 255;
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var a = parseInt(light.substr(6,2),16) / 255;
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var dark = $("#dark").val();
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var dr = parseInt(dark.substr(0,2),16) / 255;
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var dg = parseInt(dark.substr(2,2),16) / 255;
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var db = parseInt(dark.substr(4,2),16) / 255;
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var pma = $("#pmaBlend").prop("checked");
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if (pma) {
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r *= a;
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g *= a;
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b *= a;
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dr *= a;
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dg *= a;
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db *= a;
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da = 1;
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} else {
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da = 0;
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}
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for (var i = 0, j = 2, k = 8; i < 4; i++, j+=12, k+=12) {
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vertices[j] = r;
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vertices[j+1] = g;
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vertices[j+2] = b;
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vertices[j+3] = a;
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vertices[k] = dr;
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vertices[k+1] = dg;
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vertices[k+2] = db;
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vertices[k+3] = da;
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}
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}
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var canvas = document.getElementById("canvas");
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canvas.width = canvas.clientWidth;
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canvas.height = canvas.clientHeight;
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var context = new spine.webgl.ManagedWebGLRenderingContext(canvas, { alpha: false });
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var gl = context.gl;
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var vertices = [ -1, -1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
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1, -1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
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1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
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-1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0];
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var indices = [ 0, 1, 2, 2, 3, 0 ];
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var shader = spine.webgl.Shader.newTwoColoredTextured(context);
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var ivanShader = loadIvanShader(context, shader);
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var assetManager = new spine.webgl.AssetManager(context);
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assetManager.loadTexture("../example/assets/spineboy.png");
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assetManager.loadTexture("../example/assets/spineboy-pma.png");
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var camMatrix = new spine.webgl.Matrix4();
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var batcher = new spine.webgl.PolygonBatcher(context, true);
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requestAnimationFrame(load);
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function load () {
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if (assetManager.isLoadingComplete()) {
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texture = assetManager.get("../example/assets/spineboy.png");
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texturePma = assetManager.get("../example/assets/spineboy-pma.png");
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requestAnimationFrame(render);
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} else requestAnimationFrame(load);
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}
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function render() {
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gl.clearColor(1, 0, 1, 1);
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gl.clear(gl.COLOR_BUFFER_BIT);
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var pma = $("#pmaBlend").prop("checked");
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var ivan = $("#ivan").prop("checked")
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var s = ivan ? ivanShader : shader;
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s.bind();
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s.setUniform4x4f(spine.webgl.Shader.MVP_MATRIX, camMatrix.values);
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s.setUniformi("u_texture", 0);
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if (texture != null) {
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batcher.setBlendMode(pma ? context.gl.ONE : context.gl.SRC_ALPHA, context.gl.ONE_MINUS_SRC_ALPHA)
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batcher.begin(s);
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batcher.draw(pma ? texturePma : texture, vertices, indices);
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batcher.end();
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}
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s.unbind();
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requestAnimationFrame(render);
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}
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function loadIvanShader (context, shader) {
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var vs = shader.getVertexShaderSource();
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let fs = `
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#ifdef GL_ES
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#define LOWP lowp
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precision mediump float;
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#else
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#define LOWP
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#endif
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varying LOWP vec4 v_light;
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varying LOWP vec4 v_dark;
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varying vec2 v_texCoords;
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uniform sampler2D u_texture;
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void main () {
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vec4 texColor = texture2D(u_texture, v_texCoords);
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gl_FragColor.a = texColor.a * v_light.a;
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gl_FragColor.rgb = ((texColor.a - 1.0) * v_dark.a + 1.0 - texColor.rgb) * v_dark.rgb + texColor.rgb * v_light.rgb;
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}
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`;
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return new spine.webgl.Shader(context, vs, fs);
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}
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</script> |