summaryrefslogtreecommitdiffstats
path: root/dom/canvas/test/webgl-conf/checkout/js/tests/compressed-texture-utils.js
blob: 04396c9b3285914a1acda53930c18ca4c7035920 (plain)
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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*
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.
*/

"use strict";

let CompressedTextureUtils = (function() {

let formatToString = function(ext, format) {
    for (let p in ext) {
        if (ext[p] == format) {
            return p;
        }
    }
    return "0x" + format.toString(16);
};

/**
 * Make an image element from Uint8Array bitmap data.
 * @param {number} imageHeight Height of the data in pixels.
 * @param {number} imageWidth Width of the data in pixels.
 * @param {number} dataWidth Width of each row in the data buffer, in pixels.
 * @param {Uint8Array} data Image data buffer to display. Each pixel takes up 4 bytes in the array regardless of the alpha parameter.
 * @param {boolean} alpha True if alpha data should be taken from data. Otherwise alpha channel is set to 255.
 * @return {HTMLImageElement} The image element.
 */
let makeScaledImage = function(imageWidth, imageHeight, dataWidth, data, alpha, opt_scale) {
    let scale = opt_scale ? opt_scale : 8;
    let c = document.createElement("canvas");
    c.width = imageWidth * scale;
    c.height = imageHeight * scale;
    let ctx = c.getContext("2d");
    for (let yy = 0; yy < imageHeight; ++yy) {
        for (let xx = 0; xx < imageWidth; ++xx) {
            let offset = (yy * dataWidth + xx) * 4;
            ctx.fillStyle = "rgba(" +
                    data[offset + 0] + "," +
                    data[offset + 1] + "," +
                    data[offset + 2] + "," +
                    (alpha ? data[offset + 3] / 255 : 1) + ")";
            ctx.fillRect(xx * scale, yy * scale, scale, scale);
        }
    }
    return wtu.makeImageFromCanvas(c);
};

let insertCaptionedImg = function(parent, caption, img) {
    let div = document.createElement("div");
    div.appendChild(img);
    let label = document.createElement("div");
    label.appendChild(document.createTextNode(caption));
    div.appendChild(label);
    parent.appendChild(div);
};

/**
 * @param {WebGLRenderingContextBase} gl
 * @param {Object} compressedFormats Mapping from format names to format enum values.
 * @param expectedByteLength A function that takes in width, height and format and returns the expected buffer size in bytes.
 */
let testCompressedFormatsUnavailableWhenExtensionDisabled = function(gl, compressedFormats, expectedByteLength, testSize) {
    let tex = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, tex);
    for (let name in compressedFormats) {
        if (compressedFormats.hasOwnProperty(name)) {
            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, compressedFormats[name], testSize, testSize, 0, new Uint8Array(expectedByteLength(testSize, testSize, compressedFormats[name])));
            wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "Trying to use format " + name + " with extension disabled.");
            if (gl.texStorage2D) {
                gl.texStorage2D(gl.TEXTURE_2D, 1, compressedFormats[name], testSize, testSize);
                wtu.glErrorShouldBe(gl, gl.INVALID_ENUM, "Trying to use format " + name + " with texStorage2D with extension disabled.");
            }
        }
    }
    gl.bindTexture(gl.TEXTURE_2D, null);
    gl.deleteTexture(tex);
};

/**
 * @param {WebGLRenderingContextBase} gl
 * @param {Object} expectedFormats Mapping from format names to format enum values.
 */
let testCompressedFormatsListed = function(gl, expectedFormats) {
    debug("");
    debug("Testing that every format is listed by the compressed texture formats query");

    let supportedFormats = gl.getParameter(gl.COMPRESSED_TEXTURE_FORMATS);

    let failed;
    let count = 0;
    for (let name in expectedFormats) {
        if (expectedFormats.hasOwnProperty(name)) {
            ++count;
            let format = expectedFormats[name];
            failed = true;
            for (let ii = 0; ii < supportedFormats.length; ++ii) {
                if (format == supportedFormats[ii]) {
                    testPassed("supported format " + name + " exists");
                    failed = false;
                    break;
                }
            }
            if (failed) {
                testFailed("supported format " + name + " does not exist");
            }
        }
    }
    if (supportedFormats.length != count) {
        testFailed("Incorrect number of supported formats, was " + supportedFormats.length + " should be " + count);
    }
};

/**
 * @param {Object} ext Compressed texture extension object.
 * @param {Object} expectedFormats Mapping from format names to format enum values.
 */
let testCorrectEnumValuesInExt = function(ext, expectedFormats) {
    debug("");
    debug("Testing that format enum values in the extension object are correct");

    for (name in expectedFormats) {
        if (expectedFormats.hasOwnProperty(name)) {
            if (isResultCorrect(ext[name], expectedFormats[name])) {
                testPassed("Enum value for " + name + " matches 0x" + ext[name].toString(16));
            } else {
                testFailed("Enum value for " + name + " mismatch: 0x" + ext[name].toString(16) + " should be 0x" + expectedFormats[name].toString(16));
            }
        }
    }
};

/**
 * @param {WebGLRenderingContextBase} gl
 * @param {Object} validFormats Mapping from format names to format enum values.
 * @param expectedByteLength A function that takes in width, height and format and returns the expected buffer size in bytes.
 * @param getBlockDimensions A function that takes in a format and returns block size in pixels.
 */
let testFormatRestrictionsOnBufferSize = function(gl, validFormats, expectedByteLength, getBlockDimensions) {
    debug("");
    debug("Testing format restrictions on texture upload buffer size");

    let tex = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, tex);
    for (let formatId in validFormats) {
        if (validFormats.hasOwnProperty(formatId)) {
            let format = validFormats[formatId];
            let blockSize = getBlockDimensions(format);
            let expectedSize = expectedByteLength(blockSize.width * 4, blockSize.height * 4, format);
            let data = new Uint8Array(expectedSize);
            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, format, blockSize.width * 3, blockSize.height * 4, 0, data);
            wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, formatId + " data size does not match dimensions (too small width)");
            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, format, blockSize.width * 5, blockSize.height * 4, 0, data);
            wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, formatId + " data size does not match dimensions (too large width)");
            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, format, blockSize.width * 4, blockSize.height * 3, 0, data);
            wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, formatId + " data size does not match dimensions (too small height)");
            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, format, blockSize.width * 4, blockSize.height * 5, 0, data);
            wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, formatId + " data size does not match dimensions (too large height)");
        }
    }
};

/**
 * @param {WebGLRenderingContextBase} gl
 * @param {Object} validFormats Mapping from format names to format enum values.
 * @param expectedByteLength A function that takes in width, height and format and returns the expected buffer size in bytes.
 * @param getBlockDimensions A function that takes in a format and returns block size in pixels.
 * @param {number} width Width of the image in pixels.
 * @param {number} height Height of the image in pixels.
 * @param {Object} subImageConfigs configs for compressedTexSubImage calls
 */
let testTexSubImageDimensions = function(gl, ext, validFormats, expectedByteLength, getBlockDimensions, width, height, subImageConfigs) {
    let tex = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, tex);

    for (let formatId in validFormats) {
        if (validFormats.hasOwnProperty(formatId)) {
            let format = validFormats[formatId];
            let blockSize = getBlockDimensions(format);
            debug("testing " + ctu.formatToString(ext, format));
            let expectedSize = expectedByteLength(width, height, format);
            let data = new Uint8Array(expectedSize);

            gl.compressedTexImage2D(gl.TEXTURE_2D, 0, format, width, height, 0, data);
            wtu.glErrorShouldBe(gl, gl.NO_ERROR, "setting up compressed texture");

            for (let i = 0, len = subImageConfigs.length; i < len; ++i) {
                let c = subImageConfigs[i];
                let subData = new Uint8Array(expectedByteLength(c.width, c.height, format));
                gl.compressedTexSubImage2D(gl.TEXTURE_2D, 0, c.xoffset, c.yoffset, c.width, c.height, format, subData);
                wtu.glErrorShouldBe(gl, c.expectation, c.message);
            }
        }
    }

    gl.bindTexture(gl.TEXTURE_2D, null);
    gl.deleteTexture(tex);
};

let testTexImageLevelDimensions = function(gl, ext, validFormats, expectedByteLength, getBlockDimensions, imageConfigs) {
    let tex = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, tex);

    for (let formatId in validFormats) {
        if (validFormats.hasOwnProperty(formatId)) {
            let format = validFormats[formatId];
            let blockSize = getBlockDimensions(format);
            debug("testing " + ctu.formatToString(ext, format));

            for (let i = 0, len = imageConfigs.length; i < len; ++i) {
                let c = imageConfigs[i];
                let data = new Uint8Array(expectedByteLength(c.width, c.height, format));
                gl.compressedTexImage2D(gl.TEXTURE_2D, c.level, format, c.width, c.height, 0, data);
                wtu.glErrorShouldBe(gl, c.expectation, c.message);
            }
        }
    }

    gl.bindTexture(gl.TEXTURE_2D, null);
    gl.deleteTexture(tex);
}

let testTexStorageLevelDimensions = function(gl, ext, validFormats, expectedByteLength, getBlockDimensions, imageConfigs) {
    for (let formatId in validFormats) {
        let tex = gl.createTexture();
        gl.bindTexture(gl.TEXTURE_2D, tex);

        if (validFormats.hasOwnProperty(formatId)) {
            let format = validFormats[formatId];
            let blockSize = getBlockDimensions(format);
            debug("testing " + ctu.formatToString(ext, format));

            for (let i = 0, len = imageConfigs.length; i < len; ++i) {
                let c = imageConfigs[i];
                let data = new Uint8Array(expectedByteLength(c.width, c.height, format));
                if (i == 0) {
                    gl.texStorage2D(gl.TEXTURE_2D, imageConfigs.length, format, c.width, c.height);
                    wtu.glErrorShouldBe(gl, c.expectation, c.message);
                }
                gl.compressedTexSubImage2D(gl.TEXTURE_2D, i, 0, 0, c.width, c.height, format, data);
                wtu.glErrorShouldBe(gl, c.expectation, c.message);
            }
        }
        gl.bindTexture(gl.TEXTURE_2D, null);
        gl.deleteTexture(tex);
    }
}

return {
    formatToString: formatToString,
    insertCaptionedImg: insertCaptionedImg,
    makeScaledImage: makeScaledImage,
    testCompressedFormatsListed: testCompressedFormatsListed,
    testCompressedFormatsUnavailableWhenExtensionDisabled: testCompressedFormatsUnavailableWhenExtensionDisabled,
    testCorrectEnumValuesInExt: testCorrectEnumValuesInExt,
    testFormatRestrictionsOnBufferSize: testFormatRestrictionsOnBufferSize,
    testTexSubImageDimensions: testTexSubImageDimensions,
    testTexImageLevelDimensions: testTexImageLevelDimensions,
    testTexStorageLevelDimensions: testTexStorageLevelDimensions,
};

})();