| <!-- |
| |
| /* |
| ** Copyright (c) 2012 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
| ** copy of this software and/or associated documentation files (the |
| ** "Materials"), to deal in the Materials without restriction, including |
| ** without limitation the rights to use, copy, modify, merge, publish, |
| ** distribute, sublicense, and/or sell copies of the Materials, and to |
| ** permit persons to whom the Materials are furnished to do so, subject to |
| ** the following conditions: |
| ** |
| ** The above copyright notice and this permission notice shall be included |
| ** in all copies or substantial portions of the Materials. |
| ** |
| ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| */ |
| |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>WebGL Canvas Conformance Tests</title> |
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| <script src="../../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> |
| <canvas id="canvas" width="50" height="50"> </canvas> |
| |
| <script id="vshader" type="x-shader/x-vertex"> |
| attribute vec4 vPosition; |
| void main() |
| { |
| gl_Position = vPosition; |
| } |
| </script> |
| |
| <script id="fshader" type="x-shader/x-fragment"> |
| void main() |
| { |
| gl_FragColor = vec4(1.0,0.0,0.0,1.0); |
| } |
| </script> |
| |
| <script> |
| "use strict"; |
| function fail(x,y, buf, shouldBe) |
| { |
| var i = (y*50+x) * 4; |
| var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe; |
| testFailed(reason); |
| } |
| |
| function pass() |
| { |
| testPassed("drawing is correct"); |
| } |
| |
| function drawTriangleTest(gl) |
| { |
| gl.viewport(0, 0, 50, 50); |
| var vertexObject = gl.createBuffer(); |
| gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW); |
| gl.enableVertexAttribArray(0); |
| gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| |
| gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| gl.drawArrays(gl.TRIANGLES, 0, 3); |
| |
| var buf = new Uint8Array(50 * 50 * 4); |
| gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| |
| // Test several locations |
| // First line should be all black |
| for (var i = 0; i < 50; ++i) { |
| if (buf[i*4] != 0 || buf[i*4+1] != 0 || buf[i*4+2] != 0 || buf[i*4+3] != 255) { |
| fail(i, 0, buf, "(0,0,0,255)"); |
| return; |
| } |
| } |
| // Line 15 should be red for at least 10 red pixels starting 20 pixels in |
| var offset = (15*50+20) * 4; |
| for (var i = 0; i < 10; ++i) { |
| if (buf[offset+i*4] != 255 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) { |
| fail(20 + i, 15, buf, "(255,0,0,255)"); |
| return; |
| } |
| } |
| // Last line should be all black |
| offset = (49*50) * 4; |
| for (var i = 0; i < 50; ++i) { |
| if (buf[offset+i*4] != 0 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) { |
| fail(i, 49, buf, "(0,0,0,255)"); |
| return; |
| } |
| } |
| } |
| |
| description("This test ensures WebGL implementations correctly implement drawingbufferWidth/Height with compositing."); |
| |
| debug(""); |
| |
| var wtu = WebGLTestUtils; |
| var err; |
| var maxSize; |
| var gl = wtu.create3DContext("canvas"); |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| testPassed("context exists"); |
| |
| var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]); |
| shouldBeNonNull("program"); |
| gl.enable(gl.DEPTH_TEST); |
| gl.clearColor(0, 0, 0, 1); |
| shouldBe('gl.getError()', 'gl.NO_ERROR'); |
| |
| debug(""); |
| debug("Checking drawingBufferWidth/drawingBufferHeight"); |
| |
| shouldBe('gl.drawingBufferWidth', 'gl.canvas.width'); |
| shouldBe('gl.drawingBufferHeight', 'gl.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]); |
| gl.canvas.width = maxSize[0] * 4; |
| gl.canvas.height = maxSize[1] * 4; |
| shouldBeTrue('gl.drawingBufferWidth > 0'); |
| shouldBeTrue('gl.drawingBufferHeight > 0'); |
| shouldBeTrue('gl.drawingBufferWidth <= maxSize[0]'); |
| shouldBeTrue('gl.drawingBufferHeight <= maxSize[1]'); |
| shouldBe('gl.getError()', 'gl.NO_ERROR'); |
| |
| debug(""); |
| debug("Checking scaling up then back down to 50/50, drawing still works."); |
| gl.canvas.width = 50; |
| gl.canvas.height = 50; |
| shouldBeTrue('gl.drawingBufferWidth == 50'); |
| shouldBeTrue('gl.drawingBufferHeight == 50'); |
| shouldBe('gl.getError()', 'gl.NO_ERROR'); |
| drawTriangleTest(gl); |
| shouldBe('gl.getError()', 'gl.NO_ERROR'); |
| } |
| debug("") |
| var successfullyParsed = true; |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |