LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js - Issue 750273003: canvas: calling toDataURL without context doesn't create a buffer of canvas 2d.

Unified Diff: LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js

Issue 750273003: canvas: calling toDataURL without context doesn't create a buffer of canvas 2d. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: fix typo Created 6 years, 1 month ago

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Index: LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js

diff --git a/LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d.html b/LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js

similarity index 54%

copy from LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d.html

copy to LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js

index 72aa06fedf1cf7e3cd2ad576f9e8545abba09c93..8cdc0fed98912b1e981c4b2584f7ed6a9a2becf6 100644

--- a/LayoutTests/fast/canvas/webgl/draw-webgl-to-canvas-2d.html

+++ b/LayoutTests/fast/canvas/webgl/resources/draw-webgl-to-canvas-2d.js

@@ -1,33 +1,3 @@

-<!DOCTYPE html>

-<html>

-<body>

-<span id="description" style="color: white">

-This test checks for drawing webgl to canvas 2d. The test process is as follows:

-1. draw a green rect on a webgl context.

-2. draw a red rect on a canvas 2d context, and check a pixel (should be red).

-3. draw the webgl contents on the canvas 2d context, and check a pixel (should be green).

-4. wait for few frames.

-5. draw a red rect on the canvas 2d context, and check a pixel (should be red).

-6. draw the webgl contents on the canvas 2d context, and check a pixel (see below explanation).

-Above test is executed for both preserve and non-preserve webgl contexts.

-For the preserve webgl context, the pixel on #6 is green.

-For the non-preserve webgl context, the pixel on #6 is undefined.[1]

-[1] http://www.khronos.org/registry/webgl/specs/latest/1.0/.

-"This default behavior can be changed by setting the preserveDrawingBuffer

-attribute of the WebGLContextAttributes object. If this flag is true, the

-contents of the drawing buffer shall be preserved until the author either clears

-or overwrites them. If this flag is false, attempting to perform operations

-using this context as a source image after the rendering function has returned

-can lead to undefined behavior.".

-</span>

-<canvas id="preserve-canvas3d" width="100" height="100"></canvas>

-<canvas id="preserve-canvas2d" width="100" height="100"></canvas>

-<canvas id="nonpreserve-canvas3d" width="100" height="100"></canvas>

-<canvas id="nonpreserve-canvas2d" width="100" height="100"></canvas>

-<script src="../../../resources/js-test.js"></script>

-<script>

if (window.testRunner) {

testRunner.dumpAsText();

testRunner.waitUntilDone();

@@ -41,15 +11,6 @@ var nonpreserve_canvas3D;

var nonpreserve_gl;

var imgdata;

-function createContexts() {

- preserve_ctx2D = document.getElementById("preserve-canvas2d").getContext("2d");

- preserve_canvas3D = document.getElementById('preserve-canvas3d');

- preserve_gl = preserve_canvas3D.getContext('webgl', {'preserveDrawingBuffer': true});

- nonpreserve_ctx2D = document.getElementById("nonpreserve-canvas2d").getContext("2d");

- nonpreserve_canvas3D = document.getElementById('nonpreserve-canvas3d');

- nonpreserve_gl = nonpreserve_canvas3D.getContext('webgl', {'preserveDrawingBuffer': false});

function renderWebGL(gl) {

gl.clearColor(0, 1, 0, 1);

gl.clear(gl.COLOR_BUFFER_BIT);

@@ -118,7 +79,3 @@ function startTestAfterFirstPaint() {

window.onload = function () {

window.requestAnimationFrame(startTestAfterFirstPaint);

}

-</script>

-</body>

-</html>