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comparison: content/canvas/test/webgl-mochitest/test_highp_fs.html
content/canvas/test/webgl-mochitest/test_highp_fs.html
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| 1 <!DOCTYPE HTML> | |
| 2 <title>WebGL test: `highp` support</title> | |
| 3 <script src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 4 <link rel="stylesheet" href="/tests/SimpleTest/test.css"> | |
| 5 <script src="driver-info.js"></script> | |
| 6 <script src="webgl-util.js"></script> | |
| 7 <script id="shader-vs" type="x-shader/x-vertex"> | |
| 8 | |
| 9 void main(void) { | |
| 10 gl_Position = vec4(vec3(0.0), 1.0); | |
| 11 } | |
| 12 | |
| 13 </script> | |
| 14 <script id="shader-fs" type="x-shader/x-fragment"> | |
| 15 | |
| 16 precision highp float; | |
| 17 | |
| 18 void main(void) { | |
| 19 gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0); | |
| 20 } | |
| 21 | |
| 22 </script> | |
| 23 <body> | |
| 24 <canvas id="c"></canvas> | |
| 25 <script> | |
| 26 | |
| 27 // Give ourselves a scope to return early from: | |
| 28 (function() { | |
| 29 var gl = WebGLUtil.getWebGL('c'); | |
| 30 if (!gl) { | |
| 31 todo(false, 'WebGL is unavailable.'); | |
| 32 return; | |
| 33 } | |
| 34 | |
| 35 // Catch actual WebGLUtil errors, not GL errors. | |
| 36 function errorFunc(str) { | |
| 37 ok(false, 'Error: ' + str); | |
| 38 } | |
| 39 WebGLUtil.setErrorFunc(errorFunc); | |
| 40 | |
| 41 function checkGLError(func, info) { | |
| 42 var error = gl.getError(); | |
| 43 var prefix = info ? ('[' + info + '] ') : '' | |
| 44 func(!error, prefix + 'gl.getError should be 0x0, was 0x' + error.toString(16) + '.'); | |
| 45 } | |
| 46 | |
| 47 var format = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT); | |
| 48 var prog = WebGLUtil.createProgramByIds(gl, 'shader-vs', 'shader-fs'); | |
| 49 checkGLError(ok); | |
| 50 | |
| 51 if (format) { | |
| 52 ok(prog, 'Frag shader with unconditional `precision highp float` should ' + | |
| 53 'link if `getShaderPrecisionFormat` gives a format for it.'); | |
| 54 } else { | |
| 55 ok(!prog, 'Frag shader with unconditional `precision highp float` should ' + | |
| 56 'NOT link if `getShaderPrecisionFormat` gives NO format for it.'); | |
| 57 } | |
| 58 })(); | |
| 59 | |
| 60 </script> | |
| 61 |
