| OLD | NEW |
|---|
| 1 <!DOCTYPE HTML> | 1 <!DOCTYPE HTML> |
| 2 | 2 |
| 3 <!-- READ BEFORE UPDATING: | 3 <!-- READ BEFORE UPDATING: |
| 4 If this test is updated make sure to increment the "revision" value of the | 4 If this test is updated make sure to increment the "revision" value of the |
| 5 associated test in content/test/gpu/page_sets/pixel_tests.py. This will ensure | 5 associated test in content/test/gpu/page_sets/pixel_tests.py. This will ensure |
| 6 that the baseline images are regenerated on the next run. | 6 that the baseline images are regenerated on the next run. |
| 7 --> | 7 --> |
| 8 | 8 |
| 9 <html> | 9 <html> |
| 10 <head> | 10 <head> |
| 11 <title>OffscreenCanvas commit flow on main thread: green square on white backgro
und.</title> | 11 <title>OffscreenCanvas commit flow on main thread: green square on white backgro
und.</title> |
| 12 <style type="text/css"> | 12 <style type="text/css"> |
| 13 .nomargin { | 13 .nomargin { |
| 14 margin: 0px auto; | 14 margin: 0px auto; |
| 15 } | 15 } |
| 16 </style> | 16 </style> |
| 17 <script> | 17 <script> |
| 18 var g_swapsBeforeAck = 15; | 18 var g_swapsBeforeAck = 15; |
| 19 | 19 |
| 20 function main() | 20 function main() |
| 21 { | 21 { |
| 22 draw(); | 22 draw(); |
| 23 waitForFinish(); | 23 waitForFinish(); |
| 24 } | 24 } |
| 25 | 25 |
| 26 function drawTriangle(canvas) |
| 27 { |
| 28 var gl = canvas.getContext("webgl"); |
| 29 gl.clearColor(0, 1, 0, 1); |
| 30 gl.clear(gl.COLOR_BUFFER_BIT); |
| 31 |
| 32 var prog = gl.createProgram(); |
| 33 var vs = gl.createShader(gl.VERTEX_SHADER); |
| 34 gl.shaderSource(vs, ['attribute vec2 pos;', |
| 35 'void main() {', |
| 36 ' gl_Position = vec4(pos, 0., 1.);', |
| 37 '}'].join('\n')); |
| 38 gl.compileShader(vs); |
| 39 if (!gl.getShaderParameter(vs, gl.COMPILE_STATUS)) { |
| 40 throw 'failed to compiled shader'; |
| 41 } |
| 42 gl.attachShader(prog, vs); |
| 43 |
| 44 var fs = gl.createShader(gl.FRAGMENT_SHADER); |
| 45 gl.shaderSource(fs, ['void main() {', |
| 46 ' gl_FragColor = vec4(1.);', |
| 47 '}'].join('\n')); |
| 48 gl.compileShader(fs); |
| 49 if (!gl.getShaderParameter(fs, gl.COMPILE_STATUS)) { |
| 50 throw 'failed to compiled shader'; |
| 51 } |
| 52 gl.attachShader(prog, fs); |
| 53 |
| 54 gl.linkProgram(prog); |
| 55 if (!gl.getProgramParameter(prog, gl.LINK_STATUS)) { |
| 56 throw "Could not link the shader program!"; |
| 57 } |
| 58 gl.useProgram(prog); |
| 59 |
| 60 gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer()); |
| 61 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([-.5,0, 0,.5, .5,0]), gl.STATI
C_DRAW); |
| 62 var attr = gl.getAttribLocation(prog, 'pos'); |
| 63 gl.enableVertexAttribArray(attr); |
| 64 gl.vertexAttribPointer(attr, 2, gl.FLOAT, false, 0, 0); |
| 65 |
| 66 gl.drawArrays(gl.TRIANGLE_STRIP, 0, 3); |
| 67 |
| 68 gl.commit(); |
| 69 } |
| 70 |
| 26 function draw() | 71 function draw() |
| 27 { | 72 { |
| 28 var canvas = document.getElementById("c"); | 73 var canvas = document.getElementById("c"); |
| 29 var offscreenCanvas = canvas.transferControlToOffscreen(); | 74 var offscreenCanvas = canvas.transferControlToOffscreen(); |
| 30 var gl = offscreenCanvas.getContext("webgl"); | 75 drawTriangle(offscreenCanvas); |
| 31 gl.clearColor(0.0, 1.0, 0.0, 1.0); | |
| 32 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 33 gl.commit(); | |
| 34 } | 76 } |
| 35 | 77 |
| 36 function waitForFinish() | 78 function waitForFinish() |
| 37 { | 79 { |
| 38 if (g_swapsBeforeAck == 0) { | 80 if (g_swapsBeforeAck == 0) { |
| 39 domAutomationController.setAutomationId(1); | 81 domAutomationController.setAutomationId(1); |
| 40 domAutomationController.send("SUCCESS"); | 82 domAutomationController.send("SUCCESS"); |
| 41 } else { | 83 } else { |
| 42 g_swapsBeforeAck--; | 84 g_swapsBeforeAck--; |
| 43 document.getElementById('container').style.zIndex = g_swapsBeforeAck + 1; | 85 document.getElementById('container').style.zIndex = g_swapsBeforeAck + 1; |
| 44 window.webkitRequestAnimationFrame(waitForFinish); | 86 window.webkitRequestAnimationFrame(waitForFinish); |
| 45 } | 87 } |
| 46 } | 88 } |
| 47 </script> | 89 </script> |
| 48 </head> | 90 </head> |
| 49 <body onload="main()"> | 91 <body onload="main()"> |
| 50 <div style="position:relative; width:200px; height:200px; background-color:white
"> | 92 <div style="position:relative; width:300px; height:300px; background-color:white
"> |
| 51 </div> | 93 </div> |
| 52 <div id="container" style="position:absolute; top:0px; left:0px"> | 94 <div id="container" style="position:absolute; top:0px; left:0px"> |
| 53 <canvas id="c" width="200" height="200" class="nomargin"></canvas> | 95 <canvas id="c" width="300" height="300" class="nomargin"></canvas> |
| 54 </div> | 96 </div> |
| 55 </body> | 97 </body> |
| 56 </html> | 98 </html> |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2417773003:
Fix content upside down when call OffscreenCanvas's commit (Closed)
