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./ 0000755 0023430 0000310 00000000000 14312413104 010471 5 ustar hepting csfac ./triangles.js 0000644 0023430 0000310 00000004020 14312373205 013022 0 ustar hepting csfac "use strict";
var gl;
var points;
window.onload = function init()
{
var canvas = document.getElementById( "gl-canvas" );
gl = canvas.getContext('webgl2');
if (!gl) { alert( "WebGL 2.0 isn't available" ); }
//
// Configure WebGL
//
gl.viewport( 0, 0, canvas.width, canvas.height );
//gl.viewport( 196, 196, 128, 128 );
gl.clearColor( 0.0, 1.0, 0.0, 1.0 );
//gl.enable(gl.SCISSOR_TEST);
// set the scissor rectangle
//gl.scissor(0, 100, 512, 288);
// Load shaders and initialize attribute buffers
var program = initShaders( gl, "vertex-shader", "fragment-shader" );
gl.useProgram( program );
// Initialize points (vertices) array
points = new Float32Array([
-1, -1,
0, -1,
0, 0.5,
1, -1,
1, 0,
0, 0
]);
// create a vertex buffer and load that vertex data
// into the GPU
var vbufferId = gl.createBuffer();
gl.bindBuffer( gl.ARRAY_BUFFER, vbufferId );
gl.bufferData( gl.ARRAY_BUFFER, points, gl.STATIC_DRAW );
// Associate our shader variables with our data buffer
var aPosition = gl.getAttribLocation( program, "aPosition" );
gl.vertexAttribPointer( aPosition, 2, gl.FLOAT, false, 0, 0 );
gl.enableVertexAttribArray( aPosition );
// Initialize colours (RGBA) array
var colours = new Float32Array([
1.0, 0.0, 0.0, 1.0,
1.0, 1.0, 0.0, 1.0,
1.0, 0.0, 0.0, 1.0,
0.0, 1.0, 1.0, 1.0,
1.0, 0.0, 1.0, 1.0,
0.0, 1.0, 1.0, 1.0
]);
var cBufferId = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, cBufferId);
gl.bufferData(gl.ARRAY_BUFFER, colours, gl.STATIC_DRAW);
var colorLoc = gl.getAttribLocation(program, "aColor");
gl.vertexAttribPointer(colorLoc, 4, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(colorLoc);
render();
};
function render() {
gl.clear( gl.COLOR_BUFFER_BIT );
//gl.drawArrays( gl.TRIANGLES, 0, 3 );
//gl.drawArrays( gl.TRIANGLES, 3, 3 );
gl.drawArrays( gl.TRIANGLE_FAN, 0, 6 );
}
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precision mediump float;
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./triangle.js 0000644 0023430 0000310 00000002322 14312373205 012642 0 ustar hepting csfac "use strict";
var gl;
var points;
window.onload = function init()
{
var canvas = document.getElementById( "gl-canvas" );
gl = canvas.getContext('webgl2');
if (!gl) { alert( "WebGL 2.0 isn't available" ); }
//
// Initialize our data for a single triangle
//
// First, initialize the three points.
points = new Float32Array([
-1, -1 ,
0, 1 ,
1, -1
]);
//
// Configure WebGL
//
gl.viewport( 0, 0, canvas.width, canvas.height );
gl.clearColor( 1.0, 1.0, 1.0, 1.0 );
// Load shaders and initialize attribute buffers
var program = initShaders( gl, "vertex-shader", "fragment-shader" );
gl.useProgram( program );
// Load the data into the GPU
var bufferId = gl.createBuffer();
gl.bindBuffer( gl.ARRAY_BUFFER, bufferId );
gl.bufferData( gl.ARRAY_BUFFER, points, gl.STATIC_DRAW );
// Associate out shader variables with our data buffer
var aPosition = gl.getAttribLocation( program, "aPosition" );
gl.vertexAttribPointer( aPosition, 2, gl.FLOAT, false, 0, 0 );
gl.enableVertexAttribArray( aPosition );
render();
};
function render() {
gl.clear( gl.COLOR_BUFFER_BIT );
gl.drawArrays( gl.TRIANGLES, 0, 3 );
}
./.htaccess 0000644 0023430 0000310 00000000021 14312373205 012267 0 ustar hepting csfac Options +Indexes
./triangle.html 0000644 0023430 0000310 00000001031 14312373205 013166 0 ustar hepting csfac
<html>
<script id="vertex-shader" type="x-shader/x-vertex">
#version 300 es
in vec4 aPosition;
void main()
{
gl_Position = aPosition;
}
</script>
<script id="fragment-shader" type="x-shader/x-fragment">
#version 300 es
precision mediump float;
out vec4 fColor;
void main()
{
fColor = vec4( 1.0, 0.1, 0.1, 0.5 );
}
</script>
<script type="text/javascript" src="common/initShaders.js"></script>
<script type="text/javascript" src="triangle.js"></script>
<canvas id="gl-canvas" width="512" height="512"> </canvas>
</html>
./triangles.html 0000644 0023430 0000310 00000001215 14312373205 013355 0 ustar hepting csfac
<html>
<script id="vertex-shader" type="x-shader/x-vertex">
#version 300 es
precision mediump float;
in vec4 aColor;
out vec4 vColor;
in vec4 aPosition;
void main()
{
vColor = aColor;
gl_Position = aPosition;
}
</script>
<script id="fragment-shader" type="x-shader/x-fragment">
#version 300 es
precision mediump float;
in vec4 vColor;
out vec4 fColor;
void main()
{
//fColor = vec4( 1.0, 0.1, 0.1, 0.5 );
fColor = vColor;
}
</script>
<script type="text/javascript" src="common/initShaders.js"></script>
<script type="text/javascript" src="triangles.js"></script>
<canvas id="gl-canvas" width="512" height="512"> </canvas>
</html>
./common/ 0000755 0023430 0000310 00000000000 14312402612 011763 5 ustar hepting csfac ./common/initShaders.js 0000644 0023430 0000310 00000003542 14312373205 014607 0 ustar hepting csfac //
// initShaders.js
//
function initShaders( gl, vertexShaderId, fragmentShaderId )
{
var vertShdr;
var fragShdr;
var vertElem = document.getElementById( vertexShaderId );
if ( !vertElem ) {
alert( "Unable to load vertex shader " + vertexShaderId );
return -1;
}
else {
vertShdr = gl.createShader( gl.VERTEX_SHADER );
gl.shaderSource( vertShdr, vertElem.textContent.replace(/^\s+|\s+$/g, '' ));
gl.compileShader( vertShdr );
if ( !gl.getShaderParameter(vertShdr, gl.COMPILE_STATUS) ) {
var msg = "Vertex shader failed to compile. The error log is:"
+ "<pre>" + gl.getShaderInfoLog( vertShdr ) + "</pre>";
alert( msg );
return -1;
}
}
var fragElem = document.getElementById( fragmentShaderId );
if ( !fragElem ) {
alert( "Unable to load vertex shader " + fragmentShaderId );
return -1;
}
else {
fragShdr = gl.createShader( gl.FRAGMENT_SHADER );
gl.shaderSource( fragShdr, fragElem.textContent.replace(/^\s+|\s+$/g, '' ) );
gl.compileShader( fragShdr );
if ( !gl.getShaderParameter(fragShdr, gl.COMPILE_STATUS) ) {
var msg = "Fragment shader failed to compile. The error log is:"
+ "<pre>" + gl.getShaderInfoLog( fragShdr ) + "</pre>";
alert( msg );
return -1;
}
}
var program = gl.createProgram();
gl.attachShader( program, vertShdr );
gl.attachShader( program, fragShdr );
gl.linkProgram( program );
if ( !gl.getProgramParameter(program, gl.LINK_STATUS) ) {
var msg = "Shader program failed to link. The error log is:"
+ "<pre>" + gl.getProgramInfoLog( program ) + "</pre>";
alert( msg );
return -1;
}
return program;
}
./common/MVnew.js 0000644 0023430 0000310 00001200702 14312402071 013356 0 ustar hepting csfac //////////////////////////////////////////////////////////////////////////////
//
// MV.js
//
//////////////////////////////////////////////////////////////////////////////
//----------------------------------------------------------------------------
//
// Helper Functions
//
function MVbuffer(size) {
var b = {};
b.buf = new Float32Array(size);
b.index = 0;
b.push = function(x) {
for(var i=0; i<x.length; i++) {
b.buf[b.index+i] = x[i];
}
b.index += x.length;
b.type = '';
}
return b;
}
function isVector(v) {
if(v.type == "vec2" || v.type == "vec3" || v.type == "vec4") return true;
return false;
}
function isMatrix(v) {
if(v.type == "mat2" || v.type == "mat3" || v.type == "mat4") return true;
return false;
}
function radians( degrees ) {
return degrees * Math.PI / 180.0;
}
//----------------------------------------------------------------------------
function patch() {
var out = new Array(4);
for(var i = 0; i< 4; i++) out[i] = new Array(4);
out.type = "patch";
return out;
}
function curve() {
var out = new Array(4);
out.type = "curve";
return out;
}
//
// Vector Constructors
//
function vec2()
{
var out = new Array(2);
out.type = 'vec2';
switch ( arguments.length ) {
case 0:
out[0] = 0.0;
out[1] = 0.0;
break;
case 1:
if(isVector(arguments[0] && (arguments[0].type != 'vec2'))) {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
}
break;
case 2:
out[0] = arguments[0];
out[1] = arguments[1];
break;
}
return out;
}
function vec3()
{
//var result = _argumentsToArray( arguments );
var out = new Array(3);
out.type = 'vec3';
switch ( arguments.length ) {
case 0:
out[0] = 0.0;
out[1] = 0.0;
out[2] = 0.0;
return out;
case 1:
if(isVector(arguments[0]) && (arguments[0].type == "vec3")) {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
return out;
}
case 3:
out[0] = arguments[0];
out[1] = arguments[1];
out[2] = arguments[2];
return out;
default:
throw "vec3: wrong arguments";
}
return out;
}
function vec4()
{
var out = new Array(4);
out.type = 'vec4';
switch ( arguments.length ) {
case 0:
out[0] = 0.0;
out[1] = 0.0;
out[2] = 0.0;
out[3] = 0.0;
return out;
case 1:
if(isVector(arguments[0])) {
if(arguments[0].type == "vec4") {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
out[3] = arguments[0][3];
return out;
}
}
else if(arguments[0].type == "vec3") {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
out[3] = 1.0;
return out;
}
else {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
out[3] = arguments[0][3];
return out;
}
case 2:
if(typeof(arguments[0])=='number'&&arguments[1].type == 'vec3') {
out[0] = arguments[0];
out[1] = arguments[1][0];
out[2] = arguments[1][1];
out[3] = arguments[1][2];
return out;
}
return out;
case 4:
if(isVector(arguments[0])) {
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
out[3] = arguments[0][3];
return out;
}
out[0] = arguments[0];
out[1] = arguments[1];
out[2] = arguments[2];
out[3] = arguments[3];
return out;
case 3:
out[0] = arguments[0][0];
out[1] = arguments[0][1];
out[2] = arguments[0][2];
out[3] = 1.0;
return out;
default:
throw "vec4: wrong arguments";
}
}
//----------------------------------------------------------------------------
//
// Matrix Constructors
//
function mat2()
{
var out = new Array(2);
out[0] = new Array(2);
out[1] = new Array(2);
switch ( arguments.length ) {
case 0:
out[0][0]=out[3]=1.0;
out[1]=out[2]=0.0;
break;
case 1:
if(arguments[0].type == 'mat2') {
out[0][0] = arguments[0][0][0];
out[0][1] = arguments[0][0][1];
out[1][0] = arguments[0][1][0];
out[1][1] = arguments[0][1][1];
break;
}
case 4:
out[0][0] = arguments[0];
out[0][1] = arguments[1];
out[1][0] = arguments[2];
out[1][1] = arguments[3];
break;
default:
throw "mat2: wrong arguments";
}
out.type = 'mat2';
return out;
}
//----------------------------------------------------------------------------
function mat3()
{
// v = _argumentsToArray( arguments );
var out = new Array(3);
out[0] = new Array(3);
out[1] = new Array(3);
out[2] = new Array(3);
switch ( arguments.length ) {
case 0:
out[0][0]=out[1][1]=out[2][2]=1.0;
out[0][1]=out[0][2]=out[1][0]=out[1][2]=out[2][0]=out[2][1]=0.0;
break;
case 1:
for(var i=0; i<3; i++) for(var j=0; j<3; j++) {
out[i][j]=arguments[0][3*i+j];
}
break;
case 9:
for(var i=0; i<3; i++) for(var j=0; j<3; j++) {
out[i][j] = arguments[3*i+j];
}
break;
default:
throw "mat3: wrong arguments";
}
out.type = 'mat3';
return out;
}
//----------------------------------------------------------------------------
function mat4()
{
//var v = _argumentsToArray( arguments );
var out = new Array(4);
out[0] = new Array(4);
out[1] = new Array(4);
out[2] = new Array(4);
out[3] = new Array(4);
switch ( arguments.length ) {
case 0:
out[0][0]=out[1][1]=out[2][2]=out[3][3] = 1.0;
out[0][1]=out[0][2]=out[0][3]=out[1][0]=out[1][2]=out[1][3]=out[2][0]=out[2][1]
=out[2][3]=out[3][0]=out[3][1]=out[3][2]=0.0;
break;
case 1:
for(var i=0; i<4; i++) for(var i=0; i<4; i++) {
out[i][j]=arguments[0][4*i+j];
}
break;
case 4:
if(arguments[0].type == "vec4") {
for( var i=0; i<4; i++)
for(var j=0; j<4; j++)
out[i][j] = arguments[i][j];
break;
}
case 16:
for(var i=0; i<4; i++) for(var j=0; j<4; j++) {
out[i][j] = arguments[4*i+j];
}
break;
}
out.type = 'mat4';
return out;
}
//----------------------------------------------------------------------------
//
// Generic Mathematical Operations for Vectors and Matrices
//
function equal( u, v )
{
if(!(isMatrix(u)&&isMatrix(v) || (isVector(u)&&isVector(v))))
throw "equal: at least one input not a vec or mat";
if ( u.type != v.type ) throw "equal: types different";
if(isMatrix(u)) {
for ( var i = 0; i < u.length; ++i ) for ( var j = 0; j < u.length; ++j )
if ( u[i][j] !== v[i][j] ) return false;
return true;
}
if(isVector(u)) {
for ( var i = 0; i < u.length; ++i )
if ( u[i] !== v[i] ) return false;
return true;
}
}
//----------------------------------------------------------------------------
function add( u, v )
{
if ( u.type != v.type ) {
throw "add(): trying to add different types";
}
if(isVector(u)){
var result = new Array(u.length);
result.type = u.type;
for(var i=0; i<u.length; i++) {
result[i] = u[i] + v[i];
}
return result;
}
if(isMatrix(u)){
if(u.type == 'mat2') var result = mat2();
if(u.type == 'mat3') var result = mat3();
if(u.type == 'mat4') var result = mat4();
for(var i=0; i<u.length; i++) for(var j=0; j<u.length; j++){
result[i][j] = u[i][j] + v[i][j];
}
return result;
}
}
//----------------------------------------------------------------------------
function subtract( u, v )
{
if ( u.type != v.type ) {
throw "add(): trying to add different types";
}
if(isVector(u)){
if(u.type == 'vec2') var result =vec2();
if(u.type == 'vec3') var result = vec3();
if(u.type == 'vec4') var result = vec4();
result.type = u.type;
for(var i=0; i<u.length; i++) {
result[i] = u[i] - v[i];
}
return result;
}
if(isMatrix(u)){
if(u.type == 'mat2') var result = mat2();
if(u.type == 'mat3') var result = mat3();
if(u.type == 'mat4') var result = mat4();
for(var i=0; i<u.length; i++) for(var j=0; j<u.length; j++){
result[i][j] = u[i][j] - v[i][j];
}
return result;
}
}
//----------------------------------------------------------------------------
function mult( u, v )
{
if(typeof(u)=="number" && (isMatrix(v)||isVector(v))) {
if(isVector(v)){
result = new Array(v.length);
result.type = v.type;
for(var i =0; i<v.length; i++) {
result[i] = u*v[i];
}
return result;
}
if(v.type = 'mat2') result = mat2();
if(v.type = 'mat3') result = mat3();
if(v.type = 'mat4') result = mat4();
}
if(u.type=='mat2' && v.type == 'vec2') {
var result = vec2();
for(i=0;i<2;i++) {
result[i] = 0.0;
for(var k=0;k<2;k++) result[i]+=u[i][k]*v[k];
}
return result;
}
if(u.type=='mat3'&& v.type=='vec3') {
var result = vec3();
for(i=0;i<3;i++) {
result[i] = 0.0;
for(var k=0;k<3;k++) result[i]+=u[i][k]*v[k];
}
return result;
}
if(u.type=='mat4'&& v.type=='vec4') {
var result = vec4();
for(i=0;i<4;i++) {
result[i] = 0.0;
for(var k=0;k<4;k++) result[i]+=u[i][k]*v[k];
}
return result;
}
if (u.type=='mat2'&&v.type=='mat2'){