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<html>
<head>
<meta charset='UTF-8'>
<script src='/tests/SimpleTest/SimpleTest.js'></script>
<link rel='stylesheet' href='/tests/SimpleTest/test.css'>
</head>
<body>
<script id='vs' type='x-shader/x-vertex'>
attribute vec2 aVertCoord;
void main(void) {
gl_Position = vec4(aVertCoord, 0.0, 1.0);
}
</script>
<script id='fs' type='x-shader/x-fragment'>
precision mediump float; // 💩
uniform vec4 uFragColor;
void main(void) {
gl_FragColor = uFragColor;
}
</script>
<canvas id='c' width='200' height='200'></canvas>
<script>
function GetGLSLByElemId(elemId) {
var elem = document.getElementById(elemId);
if (!elem)
throw 'Bad `elemId`: ' + elemId;
return elem.innerHTML.trim();
}
function ProgramByElemIds(gl, vsId, fsId) {
var vs = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(vs, GetGLSLByElemId(vsId));
gl.compileShader(vs);
var fs = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(fs, GetGLSLByElemId(fsId));
gl.compileShader(fs);
var prog = gl.createProgram();
gl.attachShader(prog, vs);
gl.attachShader(prog, fs);
gl.linkProgram(prog);
var success = gl.getProgramParameter(prog, gl.LINK_STATUS);
if (success)
return prog;
console.log('Error linking program for \'' + vsId + '\' and \'' + fsId + '\'.');
console.log('\nLink log: ' + gl.getProgramInfoLog(prog));
console.log('\nVert shader log: ' + gl.getShaderInfoLog(vs));
console.log('\nFrag shader log: ' + gl.getShaderInfoLog(fs));
return null;
}
var RGBA = 0x1908;
var UNSIGNED_BYTE = 0x1401;
var FLOAT = 0x1406;
var HALF_FLOAT_OES = 0x8D61;
var HALF_FLOAT = 0x140B;
var RGBA4 = 0x8056;
var RGBA8 = 0x8058;
var RGBA32F = 0x8814;
var RGBA16F = 0x881A;
function EnumName(val) {
switch (val) {
case RGBA:
return 'RGBA';
case UNSIGNED_BYTE:
return 'UNSIGNED_BYTE';
case FLOAT:
return 'FLOAT';
case HALF_FLOAT_OES:
return 'HALF_FLOAT_OES';
case HALF_FLOAT:
return 'HALF_FLOAT';
case RGBA4:
return 'RGBA4';
case RGBA32F:
return 'RGBA32F';
default:
throw 'Unknown enum: 0x' + val.toString(16);
}
}
var gl;
function RGBAToString(arr) {
return '[' + arr[0].toPrecision(4) + ', ' +
arr[1].toPrecision(4) + ', ' +
arr[2].toPrecision(4) + ', ' +
arr[3].toPrecision(4) + ']';
}
function TestScreenColor(gl, isFBFloat, r, g, b, a) {
var readType = isFBFloat ? FLOAT : UNSIGNED_BYTE;
var arr;
switch (readType) {
case gl.UNSIGNED_BYTE:
arr = new Uint8Array(4);
break;
case gl.FLOAT:
arr = new Float32Array(4);
break;
default:
throw 'Bad `readType`.';
}
gl.readPixels(0, 0, 1, 1, gl.RGBA, readType, arr);
var err = gl.getError();
ok(err == 0, 'Should be no errors.');
if (err)
return;
var floatArr;
switch (readType) {
case gl.UNSIGNED_BYTE:
floatArr = new Float32Array(4);
floatArr[0] = arr[0] / 255.0;
floatArr[1] = arr[1] / 255.0;
floatArr[2] = arr[2] / 255.0;
floatArr[3] = arr[3] / 255.0;
break;
case gl.FLOAT:
floatArr = arr;
break;
default:
throw 'Bad `readType`.';
}
var testText = RGBAToString(floatArr);
var refText = RGBAToString([r, g, b, a]);
var eps = 1.0 / 255.0;
var isSame = (Math.abs(floatArr[0] - r) < eps &&
Math.abs(floatArr[1] - g) < eps &&
Math.abs(floatArr[2] - b) < eps &&
Math.abs(floatArr[3] - a) < eps);
ok(isSame, 'Should be ' + refText + ', was ' + testText + ',');
}
function TestReadFormat(gl, isFBFloat, format, type) {
var err = gl.getError();
if (err) {
ok(false, 'Should be no error at start of TestReadFormat(). (0x' + err.toString(16) + ')');
return;
}
var implFormat = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_FORMAT);
var implType = gl.getParameter(gl.IMPLEMENTATION_COLOR_READ_TYPE);
var err = gl.getError();
if (err) {
ok(false, 'Should be no error at start2 of TestReadFormat(). (0x' + err.toString(16) + ')');
return;
}
var defaultReadType = isFBFloat ? FLOAT : UNSIGNED_BYTE;
var formatOk = (format == gl.RGBA &&
type == defaultReadType);
if (format == implFormat &&
type == implType)
{
formatOk = true;
}
var w = 1;
var h = 1;
var channels = 4;
var arrSize = w * h * channels;
var arr;
switch (type) {
case UNSIGNED_BYTE:
arr = new Uint8Array(arrSize);
break;
case FLOAT:
arr = new Float32Array(arrSize);
break;
case HALF_FLOAT_OES:
case HALF_FLOAT:
arr = new Uint16Array(arrSize);
break;
default:
throw 'Bad `type`: 0x' + type.toString(16);
}
gl.readPixels(0, 0, 1, 1, format, type, arr);
var wasOk = gl.getError() == 0;
var text = 'Should ' + (formatOk ? '' : 'not ') + 'allow reading with ' +
EnumName(format) + '/' + EnumName(type) + '.'
ok(wasOk == formatOk, text);
}
function TestError(gl, expectedErr, descText) {
var err = gl.getError();
while (gl.getError()) {}
ok(err == expectedErr,
descText + ': Error should be 0x' + expectedErr.toString(16) + ', was 0x' +
err.toString(16) + '.');
return err;
}
function AttachRBToCurFB(gl, sizedFormat) {
var isSupported;
switch (sizedFormat) {
case RGBA4:
isSupported = true;
break;
case RGBA16F:
isSupported = !!gl.getExtension('EXT_color_buffer_half_float');
break;
case RGBA32F:
isSupported = !!gl.getExtension('WEBGL_color_buffer_float');
break;
default:
throw 'Bad `sizedFormat`.';
}
var rb = gl.createRenderbuffer();
gl.bindRenderbuffer(gl.RENDERBUFFER, rb);
gl.renderbufferStorage(gl.RENDERBUFFER, sizedFormat, 1, 1);
var correctError = isSupported ? 0 : gl.INVALID_ENUM;
var err = TestError(gl, correctError, 'RB specification with supported format');
if (err)
return false;
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, rb);
var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
var isComplete = (status == gl.FRAMEBUFFER_COMPLETE);
ok(isComplete, 'Framebuffer should be complete after RB attachment.');
return isComplete;
}
function AttachTexToCurFB(gl, sizedFormat) {
var canCreate;
var isAttachGuaranteed;
var format;
var type;
switch (sizedFormat) {
case RGBA8:
canCreate = true;
isAttachGuaranteed = true;
format = RGBA;
type = UNSIGNED_BYTE;
break;
case RGBA16F:
canCreate = !!gl.getExtension('OES_texture_half_float');
isAttachGuaranteed = !!gl.getExtension('EXT_color_buffer_half_float');
format = RGBA;
type = HALF_FLOAT_OES;
break;
case RGBA32F:
canCreate = !!gl.getExtension('OES_texture_float');
isAttachGuaranteed = !!gl.getExtension('WEBGL_color_buffer_float');
format = RGBA;
type = FLOAT;
break;
default:
throw 'Bad `sizedFormat`.';
}
var tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texImage2D(gl.TEXTURE_2D, 0, format, 1, 1, 0, format, type, null);
var correctError = canCreate ? 0 : gl.INVALID_ENUM;
var err = TestError(gl, correctError, 'Tex specification with supported format');
if (err)
return false;
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
var isComplete = (status == gl.FRAMEBUFFER_COMPLETE);
if (!isAttachGuaranteed && !isComplete)
todo(false, 'Framebuffer needn\'t be complete after tex attachment.');
else
ok(isComplete, 'Framebuffer should be complete after tex attachment.');
return isComplete;
}
function IsFormatFloat(sizedFormat) {
switch (sizedFormat) {
case RGBA4:
case RGBA8:
return false;
case RGBA16F:
case RGBA32F:
return true;
default:
throw 'Bad `sizedFormat`.';
}
}
function TestType(gl, prog, isTex, sizedFormat) {
TestError(gl, 0, 'At start of TestRB()');
var isAttached = isTex ? AttachTexToCurFB(gl, sizedFormat)
: AttachRBToCurFB(gl, sizedFormat);
if (!isAttached)
return;
var isFormatFloat = IsFormatFloat(sizedFormat);
TestReadFormat(gl, isFormatFloat, gl.RGBA, gl.UNSIGNED_BYTE);
TestReadFormat(gl, isFormatFloat, gl.RGBA, gl.FLOAT);
TestReadFormat(gl, isFormatFloat, gl.RGBA, HALF_FLOAT);
TestReadFormat(gl, isFormatFloat, gl.RGBA, HALF_FLOAT_OES);
//////////////////////////////////////
ok(true, 'Drawing:');
gl.clearColor(0.0, 1.5, 0.5, 1.0);
gl.clear(gl.COLOR_BUFFER_BIT);
if (isFormatFloat)
TestScreenColor(gl, isFormatFloat, 0, 1.5, 0.5, 1);
else
TestScreenColor(gl, isFormatFloat, 0, 1, 0.5, 1);
////////
ok(true, 'Clearing:');
gl.uniform4f(prog.uFragColor, 0, 0.5, 1.5, 1);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
if (isFormatFloat)
TestScreenColor(gl, isFormatFloat, 0, 0.5, 1.5, 1);
else
TestScreenColor(gl, isFormatFloat, 0, 0.5, 1.0, 1);
////////
ok(true, 'Blending:');
gl.enable(gl.BLEND);
gl.blendFunc(gl.CONSTANT_COLOR, gl.ZERO);
gl.blendColor(0, 10, 0.1, 1);
gl.uniform4f(prog.uFragColor, 0, 0.5, 15.0, 1);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
if (isFormatFloat)
TestScreenColor(gl, isFormatFloat, 0, 5.0, 1.5, 1);
else
TestScreenColor(gl, isFormatFloat, 0, 0.5, 0.1, 1);
gl.disable(gl.BLEND);
//////////////////////////////////////
}
// Give ourselves a scope to return early from:
(function() {
var canvas = document.getElementById('c');
var attribs = {
antialias: false,
depth: false,
};
gl = canvas.getContext('experimental-webgl', attribs);
if (!gl) {
todo(false, 'WebGL is unavailable.');
return;
}
var cbf = gl.getExtension('WEBGL_color_buffer_float');
var cbhf = gl.getExtension('EXT_color_buffer_half_float');
//////////////////////////////////////
gl.viewport(0, 0, 1, 1);
var prog = ProgramByElemIds(gl, 'vs', 'fs');
ok(prog, 'Program should link.');
if (!prog)
return;
prog.aVertCoord = gl.getAttribLocation(prog, 'aVertCoord');
prog.uFragColor = gl.getUniformLocation(prog, 'uFragColor');
gl.useProgram(prog);
var arr = new Float32Array([
-1, -1,
1, -1,
-1, 1,
1, 1,
]);
var vb = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, vb);
gl.bufferData(gl.ARRAY_BUFFER, arr, gl.STATIC_DRAW);
gl.enableVertexAttribArray(0);
gl.vertexAttribPointer(0, 2, gl.FLOAT, false, 0, 0);
//////////////////////////////////////
var fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
error = gl.getError();
ok(error == 0, 'Should be no errors after setup. (0x' + error.toString(16) + ')');
//////////////////////////////////////
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA8 texture');
TestType(gl, prog, true, RGBA8);
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA16F texture');
TestType(gl, prog, true, RGBA16F);
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA32F texture');
TestType(gl, prog, true, RGBA32F);
////////
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA4 renderbuffer');
TestType(gl, prog, false, RGBA4);
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA16F renderbuffer');
TestType(gl, prog, false, RGBA16F);
ok(true, '---------------------------------------------------------------------------');
ok(true, 'RGBA32F renderbuffer');
TestType(gl, prog, false, RGBA32F);
ok(true, '---------------------------------------------------------------------------');
//////////////////////////////////////
error = gl.getError();
ok(error == 0, 'Should be no errors after test.');
ok(true, 'TEST COMPLETE');
})();
</script>
</body>
</html>
|
