third_party/WebKit/LayoutTests/fast/canvas/webgl/framebuffer-bindings-affected-by-to-data-url.html - Issue 1601093008: Remove duplicated WebGL layout tests.

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Issue 1601093008: Remove duplicated WebGL layout tests. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 11 months ago

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	(Empty)
1 <!DOCTYPE html>

2 <html>

3 <body>

4 <canvas id="example" width="50" height="50">

5 </canvas>

6 <div id="description"></div>

7 <div id="console"></div>

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

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

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

11 <script>

12 "use strict";

13 var wtu = WebGLTestUtils;

14 description("toDataURL() causes side effect for framebuffer binding. crbug.com/4 45848");

15

16 function test() {

17 var glCanvas = document.getElementById("example");

18 // crbug.com/445848 bug occurs only on the following webgl configuration.

19 var gl = wtu.create3DContext(glCanvas, {preserveDrawingBuffer: true, premultip liedAlpha: true});

20 // FIXME: context.getContextAttributes().antialias is always false on

21 // content shell with --run-layout-test option. See http://crbug.com/375682

22 // If antialias is supported, test can be much shorter for crbug.com/445848.

23

24 var program = wtu.setupColorQuad(gl);

25

26 // Clear backbuffer in red.

27 gl.clearColor(1.0, 0.0, 0.0, 1.0);

28 gl.clear(gl.COLOR_BUFFER_BIT);

29 wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");

30

31 var fbo = gl.createFramebuffer();

32 var tex = gl.createTexture();

33 gl.bindTexture(gl.TEXTURE_2D, tex);

34 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 50, 50, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);

35 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);

36 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);

37 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);

38 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);

39 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

40 gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, t ex, 0);

41 if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) {

42 finishTest();

43 return;

44 }

45

46 // Clear the FBO in green.

47 gl.clearColor(0.0, 1.0, 0.0, 1.0);

48 gl.clear(gl.COLOR_BUFFER_BIT);

49

50 // backbuffer is still in red.

51 gl.bindFramebuffer(gl.FRAMEBUFFER, null);

52 wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");

53 gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);

54

55 glCanvas.toDataURL();

56 // The second toDataURL binds backbuffer in crbug.com/445848

57 glCanvas.toDataURL();

58 // It applies to backbuffer, not the FBO.

59 gl.clear(gl.COLOR_BUFFER_BIT);

60

61 // backbuffer must be in red, not green.

62 gl.bindFramebuffer(gl.FRAMEBUFFER, null);

63 wtu.checkCanvas(gl, [255, 0, 0, 255], "should be red");

64

65 finishTest();

66 }

67 test();

68

69 var successfullyParsed = true;

70 </script>

71 </body>

72 </html>

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