uniforms-should-not-lose-values.html (2197B)
1 <!-- 2 Copyright (c) 2019 The Khronos Group Inc. 3 Use of this source code is governed by an MIT-style license that can be 4 found in the LICENSE.txt file. 5 --> 6 7 <!DOCTYPE html> 8 <html> 9 <head> 10 <meta charset="utf-8"> 11 <title>Driver Bug - Uniforms should no lose values</title> 12 <link rel="stylesheet" href="../../../resources/js-test-style.css"/> 13 <script src="../../../js/js-test-pre.js"></script> 14 <script src="../../../js/webgl-test-utils.js"></script> 15 </head> 16 <body> 17 <canvas id="canvas" width="512" height="256"> </canvas> 18 <div id="description"></div> 19 <div id="console"></div> 20 <script id="vshader" type="x-shader/x-vertex"> 21 uniform float k,u; 22 uniform mat4 l; 23 attribute vec3 a; 24 void main(){ 25 gl_Position=l*vec4(a,1.+u+k); 26 } 27 </script> 28 <script id="fshader" type="x-shader/x-fragment"> 29 precision mediump float; 30 uniform float w,x,y,z; 31 void main() { 32 gl_FragColor=vec4(1.-y,y,w+x+z,1); 33 } 34 </script> 35 <script> 36 "use strict"; 37 // Certain drivers fail this test. Specifically Mac NVidia GT 330 on OSX 10.8.2 38 description(); 39 debug(""); 40 var wtu = WebGLTestUtils; 41 function test() { 42 var gl = wtu.create3DContext("canvas"); 43 if (!gl) { 44 testFailed("context does not exist"); 45 return; 46 } 47 48 wtu.setupUnitQuad(gl); 49 var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["a"], undefined, true); 50 51 var setUniformf = function(name, val) { 52 var loc = gl.getUniformLocation(program, name); 53 var func = 'uniform' + val.length + 'fv'; 54 gl[func](loc, val); 55 }; 56 57 var setUniformMat = function(name, val) { 58 var loc = gl.getUniformLocation(program, name); 59 var func = 'uniformMatrix' + Math.sqrt(val.length) + 'fv'; 60 gl[func](loc, false, val); 61 }; 62 63 setUniformMat('l', [1, 0 ,0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]); 64 gl.viewport(0, 0, 256, 256); 65 setUniformf('y', [0]); 66 wtu.drawUnitQuad(gl); 67 gl.viewport(256, 0, 256, 256); 68 setUniformf('y', [1]); 69 wtu.drawUnitQuad(gl); 70 wtu.checkCanvasRect(gl, 0, 0, 256, 256, [255, 0, 0, 255]); 71 wtu.checkCanvasRect(gl, 256, 0, 256, 256, [0, 255, 0, 255]); 72 73 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors"); 74 } 75 test(); 76 var successfullyParsed = true; 77 </script> 78 <script src="../../../js/js-test-post.js"></script> 79 </body> 80 </html>