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Unified Diff: conformance/read-pixels-pack-alignment.html

Issue 8344024: Remove older revision of webgl conformance tests. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/
Patch Set: Created 9 years, 2 months ago
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Index: conformance/read-pixels-pack-alignment.html
===================================================================
--- conformance/read-pixels-pack-alignment.html (revision 106149)
+++ conformance/read-pixels-pack-alignment.html (working copy)
@@ -1,240 +0,0 @@
-<!--
-Copyright (c) 2011 The Chromium Authors. All rights reserved.
-Use of this source code is governed by a BSD-style license that can be
-found in the LICENSE file.
- -->
-<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<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 id="vshader" type="x-shader/x-vertex">
-attribute vec3 pos;
-attribute vec4 colorIn;
-varying vec4 color;
-
-void main()
-{
- color = colorIn;
- gl_Position = vec4(pos.xyz, 1.0);
-}
-</script>
-
-<script id="fshader" type="x-shader/x-fragment">
-precision mediump float;
-varying vec4 color;
-
-void main()
-{
- gl_FragColor = color;
-}
-</script>
-</head>
-<body>
-<canvas id="example" width="32px" height="32px"></canvas>
-<div id="description"></div>
-<div id="console"></div>
-<script>
-var successfullyParsed = false;
-
-// The below declarations need to be global for "shouldBe" to see them
-var gl = null;
-var array = null;
-var pixel = [ 0, 0, 0, 0 ];
-var expectedColor = [ 0, 0, 0, 0 ];
-
-function calculatePixelBytes(format, type)
-{
- var size = 0;
- switch (format) {
- case gl.ALPHA:
- size = 1;
- break;
- case gl.RGB:
- size = 3;
- break;
- case gl.RGBA:
- size = 4;
- break;
- default:
- return -1;
- }
- switch (type) {
- case gl.UNSIGNED_BYTE:
- break;
- case gl.UNSIGNED_SHORT_5_6_5:
- if (format != gl.RGB)
- return -1;
- size = 2;
- break;
- case gl.UNSIGNED_SHORT_4_4_4_4:
- case gl.UNSIGNED_SHORT_5_5_5_1:
- if (format != gl.RGBA)
- return -1;
- size = 2;
- break;
- default:
- return -1;
- }
- return size;
-}
-
-function calculatePaddingBytes(bytesPerPixel, packAlignment, width)
-{
- var padding = 0;
- switch (packAlignment) {
- case 1:
- case 2:
- case 4:
- case 8:
- padding = (bytesPerPixel * width) % packAlignment;
- if (padding > 0)
- padding = packAlignment - padding;
- break;
- default:
- return -1;
- }
- return padding;
-}
-
-function packColor(format, type, r, g, b, a)
-{
- // FIXME: not sure if the color packing is correct for UNSIGNED_SHORT_*.
- var color = [ 0, 0, 0, 0 ];
- switch (type) {
- case gl.UNSIGNED_BYTE:
- switch (format) {
- case gl.ALPHA:
- color[0] = a;
- break;
- case gl.RGB:
- color[0] = r;
- color[1] = g;
- color[2] = b;
- break;
- case gl.RGBA:
- color[0] = r;
- color[1] = g;
- color[2] = b;
- color[3] = a;
- break;
- default:
- return null;
- }
- break;
- case gl.UNSIGNED_SHORT_5_6_5:
- if (format != gl.RGB)
- return null;
- r >>= 3;
- g >>= 2;
- b >>= 3;
- color[0] = (r << 11) + (g << 5) + b;
- break;
- case gl.UNSIGNED_SHORT_4_4_4_4:
- if (format != gl.RGBA)
- return null;
- r >>= 4;
- g >>= 4;
- b >>= 4;
- a >>= 4;
- color[0] = (r << 12) + (g << 8) + (b << 4) + a;
- break;
- case gl.UNSIGNED_SHORT_5_5_5_1:
- if (format != gl.RGBA)
- return null;
- r >>= 3;
- g >>= 3;
- b >>= 3;
- a >>= 7;
- color[0] = (r << 11) + (g << 6) + (b << 1) + a;
- break;
- Default:
- return null;
- }
- return color;
-}
-
-function runTestIteration(format, type, packAlignment, width, height)
-{
- debug("Testing PACK_ALIGNMENT = " + packAlignment + ", width = " + width + ", height = " + height);
- gl.clearColor(1, 0.4, 0, 1);
- gl.clear(gl.COLOR_BUFFER_BIT);
- gl.pixelStorei(gl.PACK_ALIGNMENT, packAlignment);
- glErrorShouldBe(gl, gl.NO_ERROR);
- var bytesPerPixel = calculatePixelBytes(format, type);
- var padding = calculatePaddingBytes(bytesPerPixel, packAlignment, width);
- var size = bytesPerPixel * width * height + padding * (height - 1);
- if (type != gl.UNSIGNED_BYTE) {
- throw "test error: only UNSIGNED_BYTE is valid to ReadPixels";
- }
- if (size < 0)
- size = 0;
- array = new Uint8Array(size);
- gl.readPixels(0, 0, width, height, format, type, array);
- if (width < 0 || height < 0) {
- glErrorShouldBe(gl, gl.INVALID_VALUE);
- return;
- }
-
- glErrorShouldBe(gl, gl.NO_ERROR);
- if (!array.length)
- return;
-
- // Check the last pixel of the last row.
- var bytesPerRow = width * bytesPerPixel + padding;
- var pos = bytesPerRow * (height - 1) + (width - 1) * bytesPerPixel;
- var numComponents = bytesPerPixel;
- for (var i = 0; i < numComponents; ++i)
- pixel[i] = array[pos + i];
- for (var i = numComponents; i < 4; ++i)
- pixel[i] = 0;
- expectedColor = packColor(format, type, 255, 102, 0, 255);
- shouldBeNonNull(expectedColor);
- shouldBe("pixel", "expectedColor");
-}
-
-description('Verify readPixels() works fine with various PACK_ALIGNMENT values.');
-
-shouldBeNonNull("gl = initWebGL('example', 'vshader', 'fshader', [ 'pos', 'colorIn' ], [ 0, 0, 0, 1 ], 1)");
-gl.disable(gl.BLEND);
-
-var formats = [ gl.RGBA ];
-var formatNames = [ "RGBA" ];
-
-for (var i = 0; i < formats.length; ++i) {
- var format = formats[i];
-
- debug("Testing format = " + formatNames[i] + " and type = UNSIGNED_BYTE");
- runTestIteration(format, gl.UNSIGNED_BYTE, 1, 1, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 2, 1, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 1, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 1, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 2, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 2, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 3, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 3, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 4, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 4, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 5, 1);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 5, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 5, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 6, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 7, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 8, 2);
- runTestIteration(format, gl.UNSIGNED_BYTE, 1, 0, 0);
- runTestIteration(format, gl.UNSIGNED_BYTE, 2, 0, 0);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 0, 0);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, 0, 0);
- runTestIteration(format, gl.UNSIGNED_BYTE, 1, -1, 1);
- runTestIteration(format, gl.UNSIGNED_BYTE, 2, 1, -1);
- runTestIteration(format, gl.UNSIGNED_BYTE, 4, 0, -1);
- runTestIteration(format, gl.UNSIGNED_BYTE, 8, -1, -1);
-}
-
-successfullyParsed = true;
-</script>
-<script src="../resources/js-test-post.js"></script>
-</body>
-</html>
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