| <!DOCTYPE HTML> |
| |
| <html> |
| <head> |
| <title>WebGL 2.0 Test: BlitFramebuffer Result Must Be Displayed</title> |
| <style type="text/css"> |
| .nomargin { |
| margin: 0px auto; |
| } |
| </style> |
| |
| <script> |
| function sendResult(status, detail) { |
| console.log(detail); |
| if (window.domAutomationController) { |
| window.domAutomationController.send(status); |
| } else { |
| console.log(status); |
| } |
| } |
| |
| var gl; |
| var fbo; |
| var width; |
| var height; |
| var numFramesBeforeBlit = 15; |
| var numFramesBeforeEnd = 15; |
| |
| function main() { |
| var canvas = document.getElementById("c"); |
| gl = canvas.getContext('webgl2', {alpha: false, antialias: false, |
| depth: false, stencil: false}); |
| if (!gl) { |
| sendResult("FAILURE", "WebGL 2.0 context not supported"); |
| return; |
| } |
| |
| // Clear background of canvas to red |
| gl.clearColor(1.0, 0.0, 0.0, 1.0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| // Wait a few frames and then clearBufferfv to green, to ensure |
| // canvas was composited |
| window.requestAnimationFrame(maybeClearBufferfv); |
| } |
| |
| function maybeClearBufferfv() |
| { |
| if (--numFramesBeforeBlit == 0) { |
| gl.clearBufferfv(gl.COLOR, 0, [ 0.0, 1.0, 0.0, 1.0 ]); |
| // That's the only operation done to the canvas. Wait to signal |
| // acknowledgment to the harness. |
| window.requestAnimationFrame(waitForFinish); |
| } else { |
| // Do this again |
| window.requestAnimationFrame(maybeClearBufferfv); |
| } |
| } |
| |
| function waitForFinish() |
| { |
| if (--numFramesBeforeEnd == 0) { |
| sendResult("SUCCESS", "Test complete"); |
| } else { |
| window.requestAnimationFrame(waitForFinish); |
| } |
| } |
| </script> |
| </head> |
| <body onload="main()"> |
| <canvas id="c" width="200" height="200" class="nomargin" style="position:absolute; top:0px; left:0px"></canvas> |
| </div> |
| </body> |
| </html> |
