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<!--
Copyright (c) 2022 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>Upload texture from video into srgb internalformats</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>
<div>
Video:
<canvas id="e_rgba" width="300" height="200"></canvas>
0x7f: <canvas id="e_rgba_color" width="30" height="200"></canvas>
<div>GL.RGBA</div>
</div>
<hr>
<div>
Video:
<canvas id="e_srgb8" width="300" height="200"></canvas>
0x7f: <canvas id="e_srgb8_color" width="30" height="200"></canvas>
<div>GL.SRGB8</div>
</div>
<hr>
<div>
Video:
<canvas id="e_srgb8_alpha8" width="300" height="200"></canvas>
0x7f: <canvas id="e_srgb8_alpha8_color" width="30" height="200"></canvas>
<div>GL.SRGB8_ALPHA8</div>
</div>
<script>
"use strict";
const wtu = WebGLTestUtils;
description();
const DATA_URL_FOR_720p_png_bt709_bt709_tv_yuv420p_vp9_webm = '\
data:video/webm;base64,GkXfo59ChoEBQveBAULygQRC84EIQoKEd2VibUKHgQJChYECGFOAZwEA\
AAAAAAMBEU2bdLpNu4tTq4QVSalmU6yBoU27i1OrhBZUrmtTrIHGTbuMU6uEElTDZ1OsggElTbuMU6u\
EHFO7a1OsggLr7AEAAAAAAABZAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA\
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAVSalmoCrXsYMPQ\
kBNgIRMYXZmV0GETGF2ZkSJiEBEAAAAAAAAFlSua9quAQAAAAAAAFHXgQFzxYgAAAAAAAAAAZyBACK1\
nIN1bmSGhVZfVlA5g4EBI+ODhAJiWgDgAQAAAAAAAB6wggUAuoIC0JqBAlWwkFW6gQFVsYEBVbuBAVW\
5gQESVMNn43NzAQAAAAAAAFljwItjxYgAAAAAAAAAAWfIAQAAAAAAABxFo4dFTkNPREVSRIePTGF2Yy\
BsaWJ2cHgtdnA5Z8iiRaOIRFVSQVRJT05Eh5QwMDowMDowMC4wNDAwMDAwMDAAAB9DtnVBWOeBAKNBU\
oEAAICCSYNCQE/wLPYAOCQcGAAYAFB/N9H/HZUjnnscu9GvIJt3936AAAAAACh4E4g/fJ8GmILlgmQ6\
iUMwWlrCvdZpJAjY24ONeWCZEIrug5k4YTeAAAAAaXgTiD98nwaYguWCZDq6Zy9PLtRqFgTRRWpDzEC\
RrKr8wtgzCibnQJwWtOOaHH9ZRjl4+aOQHHoHk/YUdplRSYiwuJO6LIyUXumq92uzm/wLAqBN0N9kRR\
evcxyTv6VcsFqLJ5W5INE4AAAAAGN4E3vgaWsaGceNeWlTmlA/W7BnrSNUEx9X/o/hlK8PPDCgN5Kpw\
0gRJkKtiMQMtYO7DQAUWLnf3+GjIUUj4hiAGdY+FNLJIdswhZLCeSDQfqV1btKL/ns57OfXQc0R3HFz\
YyB4E3vgaWsaGceNeWjppQzBaWtIcWVNbYO5ARh7kHkq6WBosnlbkfoAHFO7a5G7j7OBALeK94EB8YI\
BjfCBAw==';
function invoke(fn) { return fn(); }
invoke(async () => {
const video = document.createElement("video");
video.src = DATA_URL_FOR_720p_png_bt709_bt709_tv_yuv420p_vp9_webm;
if (!video.canPlayType('video/webm')) {
debug('Browser can not play webm videos. Skipping test.');
finishTest();
return;
}
video.muted = true;
video.loop = true;
video.crossOrigin = "anonymous";
try {
await video.play();
} catch (e) {
debug('Browser could not play this specific video. Skipping test.');
finishTest();
return;
}
function renderTex(canvas, fn_tex_image) {
const gl = canvas.gl = wtu.create3DContext(canvas);
const vs = `
attribute float a_VertexID;
varying vec2 v_uv;
void main() {
float id = a_VertexID;
v_uv.x = mod(id, 2.0);
id -= v_uv.x;
id /= 2.0;
v_uv.y = mod(id, 2.0);
gl_Position = vec4(2.0 * v_uv - 1.0, 0, 1);
}`;
const fs = `
precision mediump float;
uniform sampler2D tex;
varying vec2 v_uv;
void main() {
gl_FragColor = texture2D(tex, v_uv);
}`;
const program = gl.createProgram();
let shader = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(shader, vs);
gl.compileShader(shader);
gl.attachShader(program, shader);
shader = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(shader, fs);
gl.compileShader(shader);
gl.attachShader(program, shader);
gl.bindAttribLocation(program, 0, 'a_VertexID');
gl.linkProgram(program);
gl.useProgram(program);
if (gl.getError()) throw 'Error during linking';
const vbuf = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vbuf);
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([0,1,2,3]), gl.STATIC_DRAW);
gl.enableVertexAttribArray(0);
gl.vertexAttribPointer(0, 1, gl.FLOAT, false, 0, 0);
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
const draw = function() {
//requestAnimationFrame(draw);
fn_tex_image(gl);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
};
draw();
if (gl.getError()) throw 'Error during drawing';
}
const GL = WebGL2RenderingContext;
const COLOR_DATA = new Uint8Array([127, 127, 127, 255]);
function internalformat_webgl1or2(gl, internalformat_name) {
let internalformat = gl[internalformat_name];
if (!internalformat) {
const ext = gl.getExtension('EXT_srgb');
if (!ext) {
testPassed('EXT_srgb not supported. (ok!)');
return;
}
switch (internalformat_name) {
case 'SRGB8':
internalformat = ext.SRGB_EXT;
break;
case 'SRGB8_ALPHA8':
internalformat = ext.SRGB_ALPHA_EXT;
break;
default:
throw internalformat_name;
}
}
return internalformat;
}
function begin(e_video, e_color, internalformat_name, unpackformat) {
renderTex(e_video, gl => {
const internalformat = internalformat_webgl1or2(gl, internalformat_name);
if (!gl.SRGB8) {
unpackformat = internalformat; // Must match in webgl1.
}
gl.texImage2D(GL.TEXTURE_2D, 0, internalformat,
unpackformat, GL.UNSIGNED_BYTE, video);
});
renderTex(e_color, gl => {
const internalformat = internalformat_webgl1or2(gl, internalformat_name);
if (!gl.SRGB8) {
unpackformat = internalformat; // Must match in webgl1.
}
gl.texImage2D(GL.TEXTURE_2D, 0, internalformat, 1, 1, 0,
unpackformat, GL.UNSIGNED_BYTE, COLOR_DATA);
});
}
begin(e_rgba, e_rgba_color, 'RGBA', GL.RGBA);
begin(e_srgb8, e_srgb8_color, 'SRGB8', GL.RGB);
begin(e_srgb8_alpha8, e_srgb8_alpha8_color, 'SRGB8_ALPHA8', GL.RGBA);
// -
const GREY50_COLOR_COORD = {
x: 0,
y: 0,
};
const GREY50_TEX_COORD = {
x: e_rgba.width/2 + 1,
y: e_rgba.height/2 + 1,
};
const fn_test = (canvas, coord, data) => {
wtu.checkCanvasRect(canvas.gl, coord.x, coord.y, 1, 1, data,
`${canvas.id} @${JSON.stringify(coord)}`);
}
debug('');
debug('e_rgba');
fn_test(e_rgba_color, GREY50_COLOR_COORD, [0x7f, 0x7f, 0x7f, 0xff]);
fn_test(e_rgba, GREY50_TEX_COORD, [0x7f, 0x7f, 0x7f, 0xff]);
debug('');
debug('e_srgb8');
fn_test(e_srgb8_color, GREY50_COLOR_COORD, [0x36, 0x36, 0x36, 0xff]);
fn_test(e_srgb8, GREY50_TEX_COORD, [0x36, 0x36, 0x36, 0xff]);
debug('');
debug('e_srgb8_alpha8');
fn_test(e_srgb8_alpha8_color, GREY50_COLOR_COORD, [0x36, 0x36, 0x36, 0xff]);
fn_test(e_srgb8_alpha8, GREY50_TEX_COORD, [0x36, 0x36, 0x36, 0xff]);
finishTest();
});
/*
async function blobToDataURL(blob) {
const fr = new FileReader();
return await new Promise((yes, no) => {
fr.addEventListener('loadend', ev => {
if (fr.result) {
return yes(fr.result);
}
return no(fr.error);
});
fr.readAsDataURL(blob);
});
}
async function fetchDataUrl(url, wrapAt) {
const r = await fetch(url);
const b = await r.blob();
const durl = await blobToDataURL(b);
return durl;
}
function wrapLines(str, wrapAt) {
const lines = [];
let remaining = str;
while (remaining) {
lines.push(remaining.slice(0, wrapAt));
remaining = remaining.slice(wrapAt);
}
return lines;
}
(async () => {
const url = '720p.png.bt709.bt709.tv.yuv420p.vp9.webm';
const ident = 'DATA_URL_FOR_' + url.replaceAll('.', '_');
const durl = await fetchDataUrl(url);
const lines = wrapLines(durl, 79);
console.log(ident, '= \'\\\n' + lines.join('\\\n') + '\';');
})();
*/
</script>
</body>
</html>
|
