sampler-array-struct-function-arg.html (2093B)
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>GLSL struct containing an array of samplers passed into a user-defined function</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 <script src="../../../js/glsl-conformance-test.js"></script> 16 </head> 17 <body> 18 19 <canvas id="output" style="border: none;" width="64" height="64"></canvas> 20 <div id="description"></div> 21 <div id="console"></div> 22 <script id="fshaderSampler" type="x-shader/x-fragment"> 23 precision mediump float; 24 25 struct S { 26 sampler2D sam[2]; 27 }; 28 29 uniform S uni; 30 31 vec4 useSampler(S arg) 32 { 33 return texture2D(arg.sam[0], vec2(0.0, 0.0)); 34 } 35 36 void main() { 37 gl_FragColor = vec4(useSampler(uni)); 38 } 39 </script> 40 <script type="application/javascript"> 41 "use strict"; 42 description(); 43 44 var wtu = WebGLTestUtils; 45 var canvas = document.getElementById("output"); 46 var gl = wtu.create3DContext(canvas); 47 48 if (!gl) { 49 testFailed("Could not create a GL context."); 50 } else { 51 debug("Drawing with a shader that uses a sampler array in a struct passed into a function."); 52 var program = wtu.setupProgram( 53 gl, [wtu.simpleVertexShader, 'fshaderSampler'], ['a_position'], [0], true); 54 wtu.setupUnitQuad(gl); 55 56 var tex = gl.createTexture(); 57 gl.bindTexture(gl.TEXTURE_2D, tex); 58 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST); 59 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST); 60 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); 61 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); 62 wtu.fillTexture(gl, tex, 1, 1, [0, 255, 0, 255]); 63 64 wtu.clearAndDrawUnitQuad(gl); 65 wtu.checkCanvas(gl, [0, 255, 0, 255], "should be green"); 66 } 67 68 var successfullyParsed = true; 69 </script> 70 <script src="../../../js/js-test-post.js"></script> 71 </body> 72 </html>