| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Canvas Conformance Tests</title> |
| <script src="../../js/resources/js-test-pre.js"></script> |
| <script src="resources/webgl-test.js"></script> |
| <script src="resources/webgl-test-utils.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| description("This test ensures WebGL implementations correctly implement drawingbufferWidth/Height."); |
| |
| debug(""); |
| |
| var wtu = WebGLTestUtils; |
| var err; |
| var maxSize; |
| var canvas = document.createElement("canvas"); |
| var gl = wtu.create3DContext(canvas); |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| debug(""); |
| debug("Checking drawingBufferWidth/drawingBufferHeight"); |
| |
| // Check that a canvas with no width or height is 300x150 pixels |
| shouldBe('gl.drawingBufferWidth', 'canvas.width'); |
| shouldBe('gl.drawingBufferHeight', 'canvas.height'); |
| |
| // Check that changing the canvas size to something too large falls back to reasonable values. |
| maxSize = gl.getParameter(gl.MAX_VIEWPORT_DIMS); |
| shouldBeTrue('maxSize[0] > 0'); |
| shouldBeTrue('maxSize[1] > 0'); |
| |
| // debug("MAX_VIEWPORT_DIMS = " + maxSize[0] + "x" + maxSize[1]); |
| canvas.width = maxSize[0] * 4; |
| canvas.height = maxSize[1] * 4; |
| shouldBeTrue('gl.drawingBufferWidth > 0'); |
| shouldBeTrue('gl.drawingBufferHeight > 0'); |
| shouldBeTrue('gl.drawingBufferWidth <= maxSize[0]'); |
| shouldBeTrue('gl.drawingBufferHeight <= maxSize[1]'); |
| } |
| debug("") |
| </script> |
| <script src="../../js/resources/js-test-post.js"></script> |
| </body> |
| </html> |
