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texture2d.js
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var createContext = require('./util/create-context')
var createREGL = require('../regl')
var tape = require('tape')
tape('texture 2d', function (t) {
var gl = createContext(16, 16)
var regl = createREGL(
{
gl: gl,
optionalExtensions: ['webgl_compressed_texture_s3tc', 'ext_texture_filter_anisotropic', 'oes_texture_float', 'oes_texture_half_float']
})
var renderTexture = regl({
vert: [
'attribute vec2 position;',
'void main() {',
' gl_Position = vec4(position, 0, 1);',
'}'
].join('\n'),
frag: [
'precision highp float;',
'uniform sampler2D tex;',
'uniform vec2 shape;',
'void main() {',
' gl_FragColor = texture2D(tex, gl_FragCoord.xy / shape);',
'}'
].join('\n'),
attributes: {
position: [0, -4, -4, 4, 4, 4]
},
uniforms: {
shape: regl.prop('shape'),
tex: regl.prop('texture')
},
depth: {enable: false},
count: 3
})
var renderFloatTexture = regl({
vert: [
'attribute vec2 position;',
'void main() {',
' gl_Position = vec4(position, 0, 1);',
'}'
].join('\n'),
frag: [
'precision highp float;',
'uniform sampler2D tex;',
'uniform vec2 shape;',
'uniform vec4 component;',
'#define FLOAT_MAX 1.70141184e38',
'#define FLOAT_MIN 1.17549435e-38',
'lowp vec4 encode_float(highp float v) {',
' highp float av = abs(v);',
'if(av < FLOAT_MIN) {',
' return vec4(0.0, 0.0, 0.0, 0.0);',
'} else if(v > FLOAT_MAX) {',
' return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;',
'} else if(v < -FLOAT_MAX) {',
' return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;',
'}',
'highp vec4 c = vec4(0,0,0,0);',
'//Compute exponent and mantissa',
'highp float e = floor(log2(av));',
'highp float m = av * pow(2.0, -e) - 1.0;',
'//Unpack mantissa',
'c[1] = floor(128.0 * m);',
'm -= c[1] / 128.0;',
'c[2] = floor(32768.0 * m);',
'm -= c[2] / 32768.0;',
'c[3] = floor(8388608.0 * m);',
'//Unpack exponent',
'highp float ebias = e + 127.0;',
'c[0] = floor(ebias / 2.0);',
'ebias -= c[0] * 2.0;',
'c[1] += floor(ebias) * 128.0;',
'//Unpack sign bit',
'c[0] += 128.0 * step(0.0, -v);',
'//Scale back to range',
'return c / 255.0;',
'}',
'void main() {',
'float c = dot(component, texture2D(tex, gl_FragCoord.xy / shape));',
'gl_FragColor = encode_float(c).wzyx;',
'}'
].join('\n'),
attributes: {
position: [0, -4, -4, 4, 4, 4]
},
uniforms: {
shape: regl.prop('shape'),
tex: regl.prop('texture'),
component: function (context, props) {
var result = [0, 0, 0, 0]
result[props.component] = 1
return result
}
},
depth: {enable: false},
count: 3
})
function checkShouldThrow (desc, name) {
t.throws(function () {
regl.texture(desc)
}, /\(regl\)/, name + ' throws')
}
function checkShouldNotThrow (desc, name) {
var thrown = false
try {
regl.texture(desc)
} catch (e) {
thrown = true
}
t.ok(!thrown, name + ' should not throw')
}
function comparePixels (texture, width, height, expected, tolerance, name) {
var i
createContext.resize(gl, width, height)
regl._refresh()
if (expected instanceof Float32Array) {
for (var c = 0; c < 4; ++c) {
renderFloatTexture({
texture: texture,
shape: [width, height],
component: c
})
t.equals(gl.getError(), 0, name + ': error code is ok')
var bits = regl.read()
var floats = new Float32Array(bits.buffer)
for (i = 0; i < floats.length; ++i) {
if (!(Math.abs(floats[i] - expected[4 * i + c]) <= tolerance)) {
t.fail(name + ' @ index ' + i + '[' + c + ']' + ' ' +
expected[4 * i + c] + ' - ' + floats[i])
return
}
}
}
} else {
renderTexture({
texture: texture,
shape: [width, height]
})
t.equals(gl.getError(), 0, name + ': error code is ok')
var actual = regl.read()
for (i = 0; i < expected.length; ++i) {
if (!(Math.abs(actual[i] - expected[i]) <= tolerance)) {
t.fail(name + ' @ index ' + i + ' ' + expected[i] + ' - ' + actual[i])
return
}
}
}
t.pass(name)
}
function checkProperties (texture, props, name) {
var width = props.width
var height = props.height
t.equals(texture.width, width, name + ' width')
t.equals(texture.height, height, name + ' height')
t.equals(texture.format, props.format, name + ' format')
t.equals(texture.type, props.type, name + ' type')
if ('pixels' in props) {
comparePixels(texture, width, height, props.pixels, props.tolerance || 0, name + ' pixels')
} else if ('mipmap' in props) {
var mipmaps = props.mipmap
for (var i = 0; i < mipmaps.length; ++i) {
var w = width >> i
var h = height >> i
comparePixels(texture, w, h, mipmaps[i], props.tolerance || 0, name + ' mipmap ' + i)
}
}
// check texture properties
var mag = gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER)
var min = gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER)
var wrapS = gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S)
var wrapT = gl.getTexParameter(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T)
t.equals(mag, props.magFilter || gl.NEAREST, name + ': mag filter')
t.equals(min, props.minFilter || gl.NEAREST, name + ': min filter')
t.equals(wrapS, props.wrapS || gl.CLAMP_TO_EDGE, name + ': wrapS')
t.equals(wrapT, props.wrapT || gl.CLAMP_TO_EDGE, name + ': wrapT')
if (regl.hasExtension('ext_texture_filter_anisotropic')) {
var aniso = gl.getTexParameter(gl.TEXTURE_2D,
gl.getExtension('ext_texture_filter_anisotropic').TEXTURE_MAX_ANISOTROPY_EXT)
t.equals(aniso, props.anisotropic || 1, name + ': aniso ext')
}
}
checkProperties(
regl.texture(),
{
anisotropic: 1,
width: 1,
height: 1,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.NEAREST,
magFilter: gl.NEAREST,
pixels: [
0, 0, 0, 0
],
format: 'rgba',
type: 'uint8'
},
'empty')
checkProperties(
regl.texture({}),
{
anisotropic: 1,
width: 1,
height: 1,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.NEAREST,
magFilter: gl.NEAREST,
pixels: [
0, 0, 0, 0
],
format: 'rgba',
type: 'uint8'
},
'empty object')
checkShouldThrow({
shape: [3, 3, 2],
format: 'rgb'
}, 'inconsistent format and channels')
checkProperties(
regl.texture(2, 3),
{
anisotropic: 1,
width: 2,
height: 3,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.NEAREST,
magFilter: gl.NEAREST,
pixels: [
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
],
format: 'rgba',
type: 'uint8'
},
'2x3')
checkProperties(
regl.texture(2),
{
anisotropic: 1,
width: 2,
height: 2,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.NEAREST,
magFilter: gl.NEAREST,
pixels: [
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
],
format: 'rgba',
type: 'uint8'
},
'2x2')
checkProperties(
regl.texture(
[ [1, 2, 3],
[4, 5, 6],
[7, 8, 9] ]
),
{
anisotropic: 1,
width: 3,
height: 3,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.NEAREST,
magFilter: gl.NEAREST,
pixels: [
1, 1, 1, 255, 2, 2, 2, 255, 3, 3, 3, 255,
4, 4, 4, 255, 5, 5, 5, 255, 6, 6, 6, 255,
7, 7, 7, 255, 8, 8, 8, 255, 9, 9, 9, 255
],
format: 'luminance',
type: 'uint8'
}, '2d nested array')
checkProperties(
regl.texture({
shape: [2, 2, 2],
stride: [4, 2, 1],
offset: 3,
data: [
100, 101, 102,
1, 2, 3, 4,
5, 6, 7, 8
]
}),
{
width: 2,
height: 2,
pixels: new Uint8Array([
1, 1, 1, 2, 5, 5, 5, 6,
3, 3, 3, 4, 7, 7, 7, 8
]),
format: 'luminance alpha',
type: 'uint8'
},
'ndarray-like input')
checkProperties(
regl.texture({
shape: [4, 4, 1],
mipmap: [
[ 0, 1, 2, 3,
4, 5, 6, 7,
8, 9, 10, 11,
12, 13, 14, 15 ],
[ 0, 1,
2, 3 ],
[ 0 ]
]
}),
{
width: 4,
height: 4,
minFilter: gl.NEAREST_MIPMAP_NEAREST,
magFilter: gl.NEAREST,
mipmap: [
new Uint8Array([
0, 0, 0, 255, 1, 1, 1, 255, 2, 2, 2, 255, 3, 3, 3, 255,
4, 4, 4, 255, 5, 5, 5, 255, 6, 6, 6, 255, 7, 7, 7, 255,
8, 8, 8, 255, 9, 9, 9, 255, 10, 10, 10, 255, 11, 11, 11, 255,
12, 12, 12, 255, 13, 13, 13, 255, 14, 14, 14, 255, 15, 15, 15, 255
]),
new Uint8Array([
0, 0, 0, 255, 1, 1, 1, 255,
2, 2, 2, 255, 3, 3, 3, 255
]),
new Uint8Array([0, 0, 0, 255])
],
format: 'luminance',
type: 'uint8'
},
'simple mipmaps')
checkShouldThrow({
shape: [5, 5],
min: 'mipmap'
}, 'non-power of 2 mipmap')
checkShouldThrow({
shape: [2, 2, 1],
min: 'mipmap',
mipmap: [
[0, 0, 0, 0]
]
}, 'incomplete mipmap data')
checkShouldThrow({
shape: [2, 2, 1],
mipmap: [
[0, 0, 0, 0],
[0, 0, 0, 0]
]
}, 'bad mipmap size')
checkProperties(
regl.texture({
width: 4,
height: 4,
channels: 3,
wrap: 'clamp',
mag: 'linear',
min: 'mipmap'
}),
{
width: 4,
height: 4,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.CLAMP_TO_EDGE,
minFilter: gl.LINEAR_MIPMAP_LINEAR,
magFilter: gl.LINEAR,
pixels: new Uint8Array([
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255
]),
format: 'rgb',
type: 'uint8'
},
'width&height')
checkProperties(
regl.texture({
shape: [8, 2, 2],
wrap: ['clamp', 'mirror']
}),
{
width: 8,
height: 2,
wrapS: gl.CLAMP_TO_EDGE,
wrapT: gl.MIRRORED_REPEAT,
pixels: [
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
],
format: 'luminance alpha',
type: 'uint8'
},
'shape & wrap')
checkShouldThrow({
shape: [3, 4],
wrap: ['repeat', 'clamp']
})
checkShouldThrow({
shape: [4, 3],
wrap: ['clamp', 'repeat']
})
checkShouldThrow({
shape: [2, 3, 1],
wrap: ['repeat', 'clamp']
})
// test the weird packed formats: rgba4, rgb5 a1, rgb565
checkProperties(
regl.texture({
format: 'rgba4',
shape: [2, 2],
data: new Uint16Array([15, 15 << 4, 15 << 8, 15 << 12])
}),
{
width: 2,
height: 2,
pixels: [
0, 0, 0, 255, 0, 0, 255, 0,
0, 255, 0, 0, 255, 0, 0, 0
],
format: 'rgba4',
type: 'rgba4'
},
'rgba4')
checkProperties(
regl.texture({
format: 'rgb5 a1',
shape: [2, 2],
data: new Uint16Array([1, (31 << 11), (31 << 6), (31 << 1)])
}),
{
width: 2,
height: 2,
pixels: new Uint8Array([
0, 0, 0, 255, 255, 0, 0, 0,
0, 255, 0, 0, 0, 0, 255, 0
]),
format: 'rgb5 a1',
type: 'rgb5 a1'
},
'rgb5 a1')
// FIXME: this a bug in headless-gl
if (typeof document !== 'undefined') {
checkProperties(
regl.texture({
format: 'rgb565',
shape: [3, 1],
data: new Uint16Array([ 31 << 11, 63 << 5, 31 ])
}),
{
width: 3,
height: 1,
pixels: new Uint8Array([
255, 0, 0, 255, 0, 255, 0, 255, 0, 0, 255, 255
]),
format: 'rgb565',
type: 'rgb565'
},
'rgb565')
}
checkProperties(
regl.texture({
shape: [2, 2, 1],
flipY: true,
alignment: 4,
colorSpace: 'none',
data: new Uint8Array([1, 2, 0, 0, 3, 4, 0, 0])
}),
{
width: 2,
height: 2,
data: new Uint8Array([
3, 3, 3, 255, 4, 4, 4, 255,
1, 1, 1, 255, 2, 2, 2, 255
]),
format: 'luminance',
type: 'uint8'
},
'unpack parameters simple')
checkProperties(
regl.texture({
shape: [4, 4, 1],
flipY: true,
alignment: 4,
mipmap: [
{
alignment: 1,
data: new Uint8Array([
1, 2, 3, 4,
5, 6, 7, 8,
9, 10, 11, 12,
13, 14, 15, 16
])
},
{
flipY: false,
colorSpace: 'none',
data: new Uint8Array([1, 2, 0, 0, 3, 4, 0, 0])
},
{
alignment: 1,
data: [30]
}
]
}),
{
width: 4,
height: 4,
mipmaps: [
new Uint8Array([
12, 12, 12, 255, 13, 13, 13, 255, 14, 14, 14, 255, 15, 15, 15, 255,
8, 8, 8, 255, 9, 9, 9, 255, 10, 10, 10, 255, 11, 11, 11, 255,
4, 4, 4, 255, 5, 5, 5, 255, 6, 6, 6, 255, 7, 7, 7, 255,
0, 0, 0, 255, 1, 1, 1, 255, 2, 2, 2, 255, 3, 3, 3, 255
]),
new Uint8Array([
1, 1, 1, 255, 2, 2, 2, 255,
3, 3, 3, 255, 4, 4, 4, 255
]),
new Uint8Array([30, 30, 30, 255])
],
format: 'luminance',
type: 'uint8'
},
'unpack parameters mipmap')
// Check copy
createContext.resize(gl, 3, 5)
regl._refresh()
regl.clear({
color: [1, 0, 0, 1]
})
checkProperties(
regl.texture({
copy: true
}),
{
width: 3,
height: 5,
pixels: [
255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255,
255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255,
255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255,
255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255,
255, 0, 0, 255, 255, 0, 0, 255, 255, 0, 0, 255
],
format: 'rgba',
type: 'uint8'
},
'copy tex image2d')
regl.clear({
color: [0, 1, 0, 1]
})
checkProperties(
regl.texture({
copy: true,
x: 2,
y: 1
}),
{
width: 1,
height: 4,
pixels: [
0, 255, 0, 255,
0, 255, 0, 255,
0, 255, 0, 255,
0, 255, 0, 255
],
format: 'rgba',
type: 'uint8'
},
'copy tex image2d with offset')
checkShouldThrow({
copy: true,
x: 100,
y: 100
}, 'copy out of bounds (xy offset)')
checkShouldThrow({
copy: true,
width: 10,
height: 10
}, 'copy out of bounds (shape)')
if (regl.hasExtension('oes_texture_float')) {
checkProperties(
regl.texture({
width: 2,
height: 2,
data: new Float32Array(
[1, 2, 3, 4, -5, -6, -7, -8, 1000, 10000, 100000, 1000000, 0, 0.25, -0.25, 0.5])
}),
{
width: 2,
height: 2,
pixels: new Float32Array(
[1, 2, 3, 4, -5, -6, -7, -8, 1000, 10000, 100000, 1000000, 0, 0.25, -0.25, 0.5]),
format: 'rgba',
type: 'float32'
},
'float')
checkProperties(
regl.texture({
type: 'float',
shape: [1, 1, 4],
data: [1, 2, 3, 4]
}),
{
width: 1,
height: 1,
pixels: new Float32Array([1, 2, 3, 4]),
format: 'rgba',
type: 'float32'
},
'float type infer')
checkProperties(
regl.texture({type: 'float', shape: [1, 1, 1], format: 'luminance'}),
{width: 1, height: 1, format: 'luminance', type: 'float32'},
'luminance_float32')
checkProperties(
regl.texture({type: 'float', shape: [1, 1], format: 'alpha'}),
{width: 1, height: 1, format: 'alpha', type: 'float32'},
'alpha_float32')
checkProperties(
regl.texture({type: 'float', shape: [1, 1, 2]}),
{width: 1, height: 1, format: 'luminance alpha', type: 'float32'},
'luminance_alpha_float32')
checkProperties(
regl.texture({type: 'float', shape: [1, 1, 3]}),
{width: 1, height: 1, format: 'rgb', type: 'float32'},
'rgb_float32')
} else {
checkShouldThrow({
width: 2,
height: 2,
data: new Float32Array(16)
}, 'float missing')
}
if (regl.hasExtension('oes_texture_half_float')) {
//
// TODO: we need to also test the pixels of half-float
//
checkProperties(
regl.texture({type: 'float16', shape: [1, 1, 1], format: 'luminance'}),
{width: 1, height: 1, format: 'luminance', type: 'float16'},
'luminance_float16')
checkProperties(
regl.texture({type: 'float16', shape: [1, 1], format: 'alpha'}),
{width: 1, height: 1, format: 'alpha', type: 'float16'},
'alpha_float16')
checkProperties(
regl.texture({type: 'float16', shape: [1, 1, 2]}),
{width: 1, height: 1, format: 'luminance alpha', type: 'float16'},
'luminance_alpha_float16')
checkProperties(
regl.texture({type: 'float16', shape: [1, 1, 3]}),
{width: 1, height: 1, format: 'rgb', type: 'float16'},
'rgb_float16')
} else {
checkShouldThrow({
width: 2,
height: 2,
type: 'float16',
data: [
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0
]
}, 'half float missing')
}
// TODO Test 'mipmapHint'
function getZeros (n) {
var a = []
for (var i = 0; i < n; i++) {
a[i] = 0
}
return new Uint8Array(a)
}
// test to make sure that only dimensions divisble by 4 are accepted for compressed textures:
if (regl.hasExtension('webgl_compressed_texture_s3tc')) {
var dxtTestCases = []
dxtTestCases.push({shape: [6, 6], format: 'rgb s3tc dxt1', data: getZeros(18), isThrow: true})
dxtTestCases.push({shape: [6, 6], format: 'rgba s3tc dxt1', data: getZeros(18), isThrow: true})
dxtTestCases.push({shape: [6, 6], format: 'rgba s3tc dxt3', data: getZeros(36), isThrow: true})
dxtTestCases.push({shape: [6, 6], format: 'rgba s3tc dxt5', data: getZeros(36), isThrow: true})
dxtTestCases.push({shape: [8, 8], format: 'rgb s3tc dxt1', data: getZeros(32), isThrow: false})
dxtTestCases.push({shape: [8, 8], format: 'rgba s3tc dxt1', data: getZeros(32), isThrow: false})
dxtTestCases.push({shape: [8, 8], format: 'rgba s3tc dxt3', data: getZeros(64), isThrow: false})
dxtTestCases.push({shape: [8, 8], format: 'rgba s3tc dxt5', data: getZeros(64), isThrow: false})
for (var i = 0; i < dxtTestCases.length; i++) {
var testCase = dxtTestCases[i]
var arg = {shape: testCase.shape, type: 'uint8', format: testCase.format, data: testCase.data}
var name = 'compressed texture of shape ' + testCase.shape + ' and format ' + testCase.format
if (testCase.isThrow) {
checkShouldThrow(arg, name)
} else {
checkShouldNotThrow(arg, name)
}
}
// TODO test rest of compressed textures features.
}
// test subimage
var baseTexture = regl.texture(5, 5)
baseTexture.subimage([
[[0, 0, 0, 255], [255, 0, 0, 0]],
[[0, 255, 0, 0], [0, 0, 255, 0]]
])
checkProperties(baseTexture, {
width: 5,
height: 5,
pixels: new Uint8Array([
0, 0, 0, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 255, 0, 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
]),
format: 'rgba',
type: 'uint8'
}, 'subimage simple')
regl.clear({
color: [1, 1, 0, 1]
})
baseTexture.subimage({
copy: true,
width: 2,
height: 2
}, 2, 2)
checkProperties(baseTexture, {
width: 5,
height: 5,
pixels: new Uint8Array([
0, 0, 0, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 255, 0, 0, 0, 0, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 0, 255, 255, 255, 0, 255, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 0, 255, 255, 255, 0, 255, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
]),
format: 'rgba',
type: 'uint8'
}, 'copyTexSubImage')
// Test resize
var initTexture = regl.texture({
width: 2,
height: 2,
data: [
255, 0, 255, 255, 255, 0, 255, 255,
255, 0, 255, 255, 255, 0, 255, 255
]
})
checkProperties(initTexture, {
width: 2,
height: 2,
pixels: new Uint8Array([
255, 0, 255, 255, 255, 0, 255, 255,
255, 0, 255, 255, 255, 0, 255, 255
]),
format: 'rgba',
type: 'uint8'
}, 'simple before resize')
initTexture.resize(3, 3)
checkProperties(initTexture, {
width: 3,
height: 3,
pixels: new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
]),
format: 'rgba',
type: 'uint8'
}, 'simple after resize')
var mipTexture = regl.texture({
width: 4,
height: 4,
min: 'mipmap',
mag: 'linear',
data: [
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255
]
})
checkProperties(mipTexture, {
width: 4,
height: 4,
magFilter: gl.LINEAR,
minFilter: gl.LINEAR_MIPMAP_LINEAR,
pixels: new Uint8Array([
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255
]),
format: 'rgba',
type: 'uint8'
}, 'mipmap before resize')
mipTexture.resize(2)
checkProperties(mipTexture, {
width: 2,
height: 2,
magFilter: gl.LINEAR,
minFilter: gl.LINEAR_MIPMAP_LINEAR,
pixels: new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
]),
format: 'rgba',
type: 'uint8'
}, 'mipmap after resize')
function runDOMTests () {
var canvas = document.createElement('canvas')
canvas.width = 4
canvas.height = 4
var context2D = canvas.getContext('2d')
function box (x, y, w, h, color) {
context2D.fillStyle = color
context2D.fillRect(x, y, w, h)
}
box(0, 0, 4, 4, '#000')
box(0, 0, 2, 2, '#fff')
checkProperties(
regl.texture(canvas),
{
width: 4,
height: 4,
pixels: [
255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255
],
format: 'rgba',
type: 'uint8'
},
'canvas dom element')
box(0, 0, 1, 1, '#f00')
checkProperties(
regl.texture(context2D),
{
width: 4,
height: 4,
pixels: [
255, 0, 0, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 255
],
format: 'rgba',
type: 'uint8'
},
'context 2d')
box(2, 2, 2, 2, '#0f0')
var img = document.createElement('img')
img.src = canvas.toDataURL()
function checkImage () {
checkProperties(
regl.texture(img),
{
width: 4,
height: 4,
pixels: [
255, 0, 0, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255,
0, 0, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255
],
format: 'rgba',
type: 'uint8'
},
'DOM image element')
// test texsubimage 2D
var bigTexture = regl.texture(5, 5)
bigTexture.subimage(img)
checkProperties(bigTexture, {
width: 5,
height: 5,
pixels: [
255, 0, 0, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 0,
255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 255, 0, 0, 0, 255, 0, 0, 0, 0,
0, 0, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 0, 0, 0,
0, 0, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
],
format: 'rgba',
type: 'uint8'
}, 'DOM image element - subimage')
endTest()
}
if (img.complete) {
checkImage()
} else {
img.onload = checkImage
}
// TODO check video elements
}
function checkPropertiesMagWrap (texture, props, name) {
t.equals(texture.mag, props.mag, name + ' mag')