1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL2 TexImage3D from ImageData with unpack params tests.</title>
<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
<script src="../../../js/js-test-pre.js"></script>
<script src="../../../js/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext(undefined, undefined, 2);
let actual;
description("TexImage3D from ImageData with unpack params");
debug("TexImage3D from ImageData with UNPACK_IMAGE_HEIGHT set (crbug.com/804123)");
// framebuffer for readback
const fbo = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
function makeTestData(size, start) {
const data = new Uint8ClampedArray(size);
for (let i = 0; i < size; ++i) {
data[i] = (start + i) % 256;
}
return data;
}
// source data
//
// dstWidth = 4
// <-->
// xxxx ^ ^ ^ ^
// xxxx | | |
// xxxx | | |
// xxxx | | v dstHeight = 4
// ---- | |
// ---- | |
// ---- | v unpackImageHeight = 7
// xxxx | |
// xxxx |
// xxxx |
// xxxx |
// ---- |
// ---- |
// ---- |
// xxxx | |
// xxxx |
// xxxx |
// xxxx |
// ---- |
// ---- |
// ---- |
// xxxx | v dstDepth = 4
// xxxx |
// xxxx |
// xxxx v srcHeight = 25
// <-->
// srcWidth = 4
const unpackImageHeight = 7;
const dstWidth = 4;
const dstHeight = 4;
const dstDepth = 4;
const srcWidth = dstWidth;
const srcHeight = (dstDepth - 1) * unpackImageHeight + dstHeight;
const srcSize = srcWidth * srcHeight;
const sizeofR8 = 1;
const sizeofRGBA8 = 4;
const imageData = new ImageData(makeTestData(srcSize * sizeofRGBA8, 1), srcWidth, srcHeight);
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_3D, texture);
debug("");
// upload
gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, 2);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.R8, 1, 1, 1, 0, gl.RED, gl.UNSIGNED_BYTE, imageData);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "small upload");
// check
actual = new Uint8Array(sizeofRGBA8);
gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, 0);
if (gl.checkFramebufferStatus(gl.FRAMEBUFFER) == gl.FRAMEBUFFER_COMPLETE) {
gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, actual);
shouldBeTrue(`areArraysEqual(actual, [1, 0, 0, 255])`);
wtu.glErrorShouldBe(gl, gl.NO_ERROR);
} else {
debug("framebuffer incomplete: skipped");
}
debug("");
// upload
gl.pixelStorei(gl.UNPACK_IMAGE_HEIGHT, unpackImageHeight);
gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, dstWidth, dstHeight, dstDepth, 0,
gl.RGBA, gl.UNSIGNED_BYTE, imageData);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "larger upload");
// check
actual = new Uint8Array(dstWidth * dstHeight * sizeofRGBA8);
let expected;
for (let z = 0; z < dstDepth; ++z) {
gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, texture, 0, z);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.readPixels(0, 0, dstWidth, dstHeight, gl.RGBA, gl.UNSIGNED_BYTE, actual);
debug(`for z = ${z}:`);
expected = makeTestData(dstWidth * dstHeight * sizeofRGBA8,
1 + z * dstWidth * unpackImageHeight * sizeofRGBA8);
shouldBeTrue('areArraysEqual(actual, expected)');
}
wtu.glErrorShouldBe(gl, gl.NO_ERROR);
gl.deleteTexture(texture);
var successfullyParsed = true;
</script>
<script src="../../../js/js-test-post.js"></script>
</body>
</html>
|
