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| (Empty) |
| 1 | |
| 2 <!DOCTYPE html> | |
| 3 <html> | |
| 4 <head> | |
| 5 <title>Rendering Test</title> | |
| 6 <script src="../../../resources/js-test.js"></script> | |
| 7 <script src="resources/webgl-test.js"> </script> | |
| 8 </head> | |
| 9 <body> | |
| 10 <canvas id="example" width="50" height="50"> | |
| 11 There is supposed to be an example drawing here, but it's not important. | |
| 12 </canvas> | |
| 13 <div id="description"></div> | |
| 14 <div id="console"></div> | |
| 15 <script id="vshader" type="x-shader/x-vertex"> | |
| 16 attribute vec4 vPosition; | |
| 17 void main() | |
| 18 { | |
| 19 gl_Position = vPosition; | |
| 20 } | |
| 21 </script> | |
| 22 | |
| 23 <script id="fshader" type="x-shader/x-fragment"> | |
| 24 void main() | |
| 25 { | |
| 26 gl_FragColor = vec4(1.0,0.0,0.0,1.0); | |
| 27 } | |
| 28 </script> | |
| 29 | |
| 30 <script> | |
| 31 function fail(x,y, buf, shouldBe) | |
| 32 { | |
| 33 var i = (y*50+x) * 4; | |
| 34 var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+b
uf[i+2]+","+buf[i+3]+"), should be "+shouldBe; | |
| 35 testFailed(reason); | |
| 36 } | |
| 37 | |
| 38 function pass() | |
| 39 { | |
| 40 testPassed("drawing is correct"); | |
| 41 } | |
| 42 | |
| 43 function init() | |
| 44 { | |
| 45 if (window.initNonKhronosFramework) { | |
| 46 window.initNonKhronosFramework(false); | |
| 47 } | |
| 48 | |
| 49 gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0,
0, 0, 1 ], 1); | |
| 50 | |
| 51 var vertexObject = gl.createBuffer(); | |
| 52 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); | |
| 53 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5
,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW); | |
| 54 gl.enableVertexAttribArray(0); | |
| 55 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); | |
| 56 | |
| 57 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 58 gl.drawArrays(gl.TRIANGLES, 0, 3); | |
| 59 | |
| 60 var buf = new Uint8Array(50 * 50 * 4); | |
| 61 gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE, buf); | |
| 62 | |
| 63 // Test several locations | |
| 64 // First line should be all black | |
| 65 for (var i = 0; i < 50; ++i) | |
| 66 if (buf[i*4] != 0 || buf[i*4+1] != 0 || buf[i*4+2] != 0 || buf[i
*4+3] != 255) { | |
| 67 fail(i, 0, buf, "(0,0,0,255)"); | |
| 68 return; | |
| 69 } | |
| 70 | |
| 71 // Line 15 should be red for at least 10 red pixels starting 20 pixe
ls in | |
| 72 var offset = (15*50+20) * 4; | |
| 73 for (var i = 0; i < 10; ++i) | |
| 74 if (buf[offset+i*4] != 255 || buf[offset+i*4+1] != 0 || buf[offs
et+i*4+2] != 0 || buf[offset+i*4+3] != 255) { | |
| 75 fail(20 + i, 15, buf, "(255,0,0,255)"); | |
| 76 return; | |
| 77 } | |
| 78 // Last line should be all black | |
| 79 offset = (49*50) * 4; | |
| 80 for (var i = 0; i < 50; ++i) | |
| 81 if (buf[offset+i*4] != 0 || buf[offset+i*4+1] != 0 || buf[offset
+i*4+2] != 0 || buf[offset+i*4+3] != 255) { | |
| 82 fail(i, 49, buf, "(0,0,0,255)"); | |
| 83 return; | |
| 84 } | |
| 85 | |
| 86 pass(); | |
| 87 } | |
| 88 | |
| 89 init(); | |
| 90 </script> | |
| 91 </body> | |
| 92 | |
| 93 </body> | |
| 94 </html> | |
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Chromium Code Reviews
Issue 1601093008:
Remove duplicated WebGL layout tests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master