802 lines
24 KiB
JavaScript
802 lines
24 KiB
JavaScript
// Utilities
|
|
var Vector3 = {};
|
|
var Matrix44 = {};
|
|
Vector3.create = function(x, y, z) {
|
|
return {'x':x, 'y':y, 'z':z};
|
|
};
|
|
Vector3.dot = function (v0, v1) {
|
|
return v0.x * v1.x + v0.y * v1.y + v0.z * v1.z;
|
|
};
|
|
Vector3.cross = function (v, v0, v1) {
|
|
v.x = v0.y * v1.z - v0.z * v1.y;
|
|
v.y = v0.z * v1.x - v0.x * v1.z;
|
|
v.z = v0.x * v1.y - v0.y * v1.x;
|
|
};
|
|
Vector3.normalize = function (v) {
|
|
var l = v.x * v.x + v.y * v.y + v.z * v.z;
|
|
if(l > 0.00001) {
|
|
l = 1.0 / Math.sqrt(l);
|
|
v.x *= l;
|
|
v.y *= l;
|
|
v.z *= l;
|
|
}
|
|
};
|
|
Vector3.arrayForm = function(v) {
|
|
if(v.array) {
|
|
v.array[0] = v.x;
|
|
v.array[1] = v.y;
|
|
v.array[2] = v.z;
|
|
}
|
|
else {
|
|
v.array = new Float32Array([v.x, v.y, v.z]);
|
|
}
|
|
return v.array;
|
|
};
|
|
Matrix44.createIdentity = function () {
|
|
return new Float32Array([1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0]);
|
|
};
|
|
Matrix44.loadProjection = function (m, aspect, vdeg, near, far) {
|
|
var h = near * Math.tan(vdeg * Math.PI / 180.0 * 0.5) * 2.0;
|
|
var w = h * aspect;
|
|
|
|
m[0] = 2.0 * near / w;
|
|
m[1] = 0.0;
|
|
m[2] = 0.0;
|
|
m[3] = 0.0;
|
|
|
|
m[4] = 0.0;
|
|
m[5] = 2.0 * near / h;
|
|
m[6] = 0.0;
|
|
m[7] = 0.0;
|
|
|
|
m[8] = 0.0;
|
|
m[9] = 0.0;
|
|
m[10] = -(far + near) / (far - near);
|
|
m[11] = -1.0;
|
|
|
|
m[12] = 0.0;
|
|
m[13] = 0.0;
|
|
m[14] = -2.0 * far * near / (far - near);
|
|
m[15] = 0.0;
|
|
};
|
|
Matrix44.loadLookAt = function (m, vpos, vlook, vup) {
|
|
var frontv = Vector3.create(vpos.x - vlook.x, vpos.y - vlook.y, vpos.z - vlook.z);
|
|
Vector3.normalize(frontv);
|
|
var sidev = Vector3.create(1.0, 0.0, 0.0);
|
|
Vector3.cross(sidev, vup, frontv);
|
|
Vector3.normalize(sidev);
|
|
var topv = Vector3.create(1.0, 0.0, 0.0);
|
|
Vector3.cross(topv, frontv, sidev);
|
|
Vector3.normalize(topv);
|
|
|
|
m[0] = sidev.x;
|
|
m[1] = topv.x;
|
|
m[2] = frontv.x;
|
|
m[3] = 0.0;
|
|
|
|
m[4] = sidev.y;
|
|
m[5] = topv.y;
|
|
m[6] = frontv.y;
|
|
m[7] = 0.0;
|
|
|
|
m[8] = sidev.z;
|
|
m[9] = topv.z;
|
|
m[10] = frontv.z;
|
|
m[11] = 0.0;
|
|
|
|
m[12] = -(vpos.x * m[0] + vpos.y * m[4] + vpos.z * m[8]);
|
|
m[13] = -(vpos.x * m[1] + vpos.y * m[5] + vpos.z * m[9]);
|
|
m[14] = -(vpos.x * m[2] + vpos.y * m[6] + vpos.z * m[10]);
|
|
m[15] = 1.0;
|
|
};
|
|
|
|
//
|
|
var timeInfo = {
|
|
'start':0, 'prev':0, // Date
|
|
'delta':0, 'elapsed':0 // Number(sec)
|
|
};
|
|
|
|
//
|
|
var gl;
|
|
var renderSpec = {
|
|
'width':0,
|
|
'height':0,
|
|
'aspect':1,
|
|
'array':new Float32Array(3),
|
|
'halfWidth':0,
|
|
'halfHeight':0,
|
|
'halfArray':new Float32Array(3)
|
|
// and some render targets. see setViewport()
|
|
};
|
|
renderSpec.setSize = function(w, h) {
|
|
renderSpec.width = w;
|
|
renderSpec.height = h;
|
|
renderSpec.aspect = renderSpec.width / renderSpec.height;
|
|
renderSpec.array[0] = renderSpec.width;
|
|
renderSpec.array[1] = renderSpec.height;
|
|
renderSpec.array[2] = renderSpec.aspect;
|
|
|
|
renderSpec.halfWidth = Math.floor(w / 2);
|
|
renderSpec.halfHeight = Math.floor(h / 2);
|
|
renderSpec.halfArray[0] = renderSpec.halfWidth;
|
|
renderSpec.halfArray[1] = renderSpec.halfHeight;
|
|
renderSpec.halfArray[2] = renderSpec.halfWidth / renderSpec.halfHeight;
|
|
};
|
|
|
|
function deleteRenderTarget(rt) {
|
|
gl.deleteFramebuffer(rt.frameBuffer);
|
|
gl.deleteRenderbuffer(rt.renderBuffer);
|
|
gl.deleteTexture(rt.texture);
|
|
}
|
|
|
|
function createRenderTarget(w, h) {
|
|
var ret = {
|
|
'width':w,
|
|
'height':h,
|
|
'sizeArray':new Float32Array([w, h, w / h]),
|
|
'dtxArray':new Float32Array([1.0 / w, 1.0 / h])
|
|
};
|
|
ret.frameBuffer = gl.createFramebuffer();
|
|
ret.renderBuffer = gl.createRenderbuffer();
|
|
ret.texture = gl.createTexture();
|
|
|
|
gl.bindTexture(gl.TEXTURE_2D, ret.texture);
|
|
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, w, h, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
|
|
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_MAG_FILTER, gl.LINEAR);
|
|
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
|
|
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, ret.frameBuffer);
|
|
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, ret.texture, 0);
|
|
|
|
gl.bindRenderbuffer(gl.RENDERBUFFER, ret.renderBuffer);
|
|
gl.renderbufferStorage(gl.RENDERBUFFER, gl.DEPTH_COMPONENT16, w, h);
|
|
gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, ret.renderBuffer);
|
|
|
|
gl.bindTexture(gl.TEXTURE_2D, null);
|
|
gl.bindRenderbuffer(gl.RENDERBUFFER, null);
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
|
|
return ret;
|
|
}
|
|
|
|
function compileShader(shtype, shsrc) {
|
|
var retsh = gl.createShader(shtype);
|
|
|
|
gl.shaderSource(retsh, shsrc);
|
|
gl.compileShader(retsh);
|
|
|
|
if(!gl.getShaderParameter(retsh, gl.COMPILE_STATUS)) {
|
|
var errlog = gl.getShaderInfoLog(retsh);
|
|
gl.deleteShader(retsh);
|
|
console.error(errlog);
|
|
return null;
|
|
}
|
|
return retsh;
|
|
}
|
|
|
|
function createShader(vtxsrc, frgsrc, uniformlist, attrlist) {
|
|
var vsh = compileShader(gl.VERTEX_SHADER, vtxsrc);
|
|
var fsh = compileShader(gl.FRAGMENT_SHADER, frgsrc);
|
|
|
|
if(vsh == null || fsh == null) {
|
|
return null;
|
|
}
|
|
|
|
var prog = gl.createProgram();
|
|
gl.attachShader(prog, vsh);
|
|
gl.attachShader(prog, fsh);
|
|
|
|
gl.deleteShader(vsh);
|
|
gl.deleteShader(fsh);
|
|
|
|
gl.linkProgram(prog);
|
|
if (!gl.getProgramParameter(prog, gl.LINK_STATUS)) {
|
|
var errlog = gl.getProgramInfoLog(prog);
|
|
console.error(errlog);
|
|
return null;
|
|
}
|
|
|
|
if(uniformlist) {
|
|
prog.uniforms = {};
|
|
for(var i = 0; i < uniformlist.length; i++) {
|
|
prog.uniforms[uniformlist[i]] = gl.getUniformLocation(prog, uniformlist[i]);
|
|
}
|
|
}
|
|
|
|
if(attrlist) {
|
|
prog.attributes = {};
|
|
for(var i = 0; i < attrlist.length; i++) {
|
|
var attr = attrlist[i];
|
|
prog.attributes[attr] = gl.getAttribLocation(prog, attr);
|
|
}
|
|
}
|
|
|
|
return prog;
|
|
}
|
|
|
|
function useShader(prog) {
|
|
gl.useProgram(prog);
|
|
for(var attr in prog.attributes) {
|
|
gl.enableVertexAttribArray(prog.attributes[attr]);;
|
|
}
|
|
}
|
|
|
|
function unuseShader(prog) {
|
|
for(var attr in prog.attributes) {
|
|
gl.disableVertexAttribArray(prog.attributes[attr]);;
|
|
}
|
|
gl.useProgram(null);
|
|
}
|
|
|
|
/////
|
|
var projection = {
|
|
'angle':60,
|
|
'nearfar':new Float32Array([0.1, 100.0]),
|
|
'matrix':Matrix44.createIdentity()
|
|
};
|
|
var camera = {
|
|
'position':Vector3.create(0, 0, 100),
|
|
'lookat':Vector3.create(0, 0, 0),
|
|
'up':Vector3.create(0, 1, 0),
|
|
'dof':Vector3.create(10.0, 4.0, 8.0),
|
|
'matrix':Matrix44.createIdentity()
|
|
};
|
|
|
|
var pointFlower = {};
|
|
var meshFlower = {};
|
|
var sceneStandBy = false;
|
|
|
|
var BlossomParticle = function () {
|
|
this.velocity = new Array(3);
|
|
this.rotation = new Array(3);
|
|
this.position = new Array(3);
|
|
this.euler = new Array(3);
|
|
this.size = 1.0;
|
|
this.alpha = 1.0;
|
|
this.zkey = 0.0;
|
|
};
|
|
|
|
BlossomParticle.prototype.setVelocity = function (vx, vy, vz) {
|
|
this.velocity[0] = vx;
|
|
this.velocity[1] = vy;
|
|
this.velocity[2] = vz;
|
|
};
|
|
|
|
BlossomParticle.prototype.setRotation = function (rx, ry, rz) {
|
|
this.rotation[0] = rx;
|
|
this.rotation[1] = ry;
|
|
this.rotation[2] = rz;
|
|
};
|
|
|
|
BlossomParticle.prototype.setPosition = function (nx, ny, nz) {
|
|
this.position[0] = nx;
|
|
this.position[1] = ny;
|
|
this.position[2] = nz;
|
|
};
|
|
|
|
BlossomParticle.prototype.setEulerAngles = function (rx, ry, rz) {
|
|
this.euler[0] = rx;
|
|
this.euler[1] = ry;
|
|
this.euler[2] = rz;
|
|
};
|
|
|
|
BlossomParticle.prototype.setSize = function (s) {
|
|
this.size = s;
|
|
};
|
|
|
|
BlossomParticle.prototype.update = function (dt, et) {
|
|
this.position[0] += this.velocity[0] * dt;
|
|
this.position[1] += this.velocity[1] * dt;
|
|
this.position[2] += this.velocity[2] * dt;
|
|
|
|
this.euler[0] += this.rotation[0] * dt;
|
|
this.euler[1] += this.rotation[1] * dt;
|
|
this.euler[2] += this.rotation[2] * dt;
|
|
};
|
|
|
|
function createPointFlowers() {
|
|
// get point sizes
|
|
var prm = gl.getParameter(gl.ALIASED_POINT_SIZE_RANGE);
|
|
renderSpec.pointSize = {'min':prm[0], 'max':prm[1]};
|
|
|
|
var vtxsrc = document.getElementById("sakura_point_vsh").textContent;
|
|
var frgsrc = document.getElementById("sakura_point_fsh").textContent;
|
|
|
|
pointFlower.program = createShader(
|
|
vtxsrc, frgsrc,
|
|
['uProjection', 'uModelview', 'uResolution', 'uOffset', 'uDOF', 'uFade'],
|
|
['aPosition', 'aEuler', 'aMisc']
|
|
);
|
|
|
|
useShader(pointFlower.program);
|
|
pointFlower.offset = new Float32Array([0.0, 0.0, 0.0]);
|
|
pointFlower.fader = Vector3.create(0.0, 10.0, 0.0);
|
|
|
|
// paramerters: velocity[3], rotate[3]
|
|
pointFlower.numFlowers = 1600;
|
|
pointFlower.particles = new Array(pointFlower.numFlowers);
|
|
// vertex attributes {position[3], euler_xyz[3], size[1]}
|
|
pointFlower.dataArray = new Float32Array(pointFlower.numFlowers * (3 + 3 + 2));
|
|
pointFlower.positionArrayOffset = 0;
|
|
pointFlower.eulerArrayOffset = pointFlower.numFlowers * 3;
|
|
pointFlower.miscArrayOffset = pointFlower.numFlowers * 6;
|
|
|
|
pointFlower.buffer = gl.createBuffer();
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, pointFlower.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, pointFlower.dataArray, gl.DYNAMIC_DRAW);
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
|
|
unuseShader(pointFlower.program);
|
|
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
pointFlower.particles[i] = new BlossomParticle();
|
|
}
|
|
}
|
|
|
|
function initPointFlowers() {
|
|
//area
|
|
pointFlower.area = Vector3.create(20.0, 20.0, 20.0);
|
|
pointFlower.area.x = pointFlower.area.y * renderSpec.aspect;
|
|
|
|
pointFlower.fader.x = 10.0; //env fade start
|
|
pointFlower.fader.y = pointFlower.area.z; //env fade half
|
|
pointFlower.fader.z = 0.1; //near fade start
|
|
|
|
//particles
|
|
var PI2 = Math.PI * 2.0;
|
|
var tmpv3 = Vector3.create(0, 0, 0);
|
|
var tmpv = 0;
|
|
var symmetryrand = function() {return (Math.random() * 2.0 - 1.0);};
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var tmpprtcl = pointFlower.particles[i];
|
|
|
|
//velocity
|
|
tmpv3.x = symmetryrand() * 0.3 + 0.8;
|
|
tmpv3.y = symmetryrand() * 0.2 - 1.0;
|
|
tmpv3.z = symmetryrand() * 0.3 + 0.5;
|
|
Vector3.normalize(tmpv3);
|
|
tmpv = 2.0 + Math.random() * 1.0;
|
|
tmpprtcl.setVelocity(tmpv3.x * tmpv, tmpv3.y * tmpv, tmpv3.z * tmpv);
|
|
|
|
//rotation
|
|
tmpprtcl.setRotation(
|
|
symmetryrand() * PI2 * 0.5,
|
|
symmetryrand() * PI2 * 0.5,
|
|
symmetryrand() * PI2 * 0.5
|
|
);
|
|
|
|
//position
|
|
tmpprtcl.setPosition(
|
|
symmetryrand() * pointFlower.area.x,
|
|
symmetryrand() * pointFlower.area.y,
|
|
symmetryrand() * pointFlower.area.z
|
|
);
|
|
|
|
//euler
|
|
tmpprtcl.setEulerAngles(
|
|
Math.random() * Math.PI * 2.0,
|
|
Math.random() * Math.PI * 2.0,
|
|
Math.random() * Math.PI * 2.0
|
|
);
|
|
|
|
//size
|
|
tmpprtcl.setSize(0.9 + Math.random() * 0.1);
|
|
}
|
|
}
|
|
|
|
function renderPointFlowers() {
|
|
//update
|
|
var PI2 = Math.PI * 2.0;
|
|
var limit = [pointFlower.area.x, pointFlower.area.y, pointFlower.area.z];
|
|
var repeatPos = function (prt, cmp, limit) {
|
|
if(Math.abs(prt.position[cmp]) - prt.size * 0.5 > limit) {
|
|
//out of area
|
|
if(prt.position[cmp] > 0) {
|
|
prt.position[cmp] -= limit * 2.0;
|
|
}
|
|
else {
|
|
prt.position[cmp] += limit * 2.0;
|
|
}
|
|
}
|
|
};
|
|
var repeatEuler = function (prt, cmp) {
|
|
prt.euler[cmp] = prt.euler[cmp] % PI2;
|
|
if(prt.euler[cmp] < 0.0) {
|
|
prt.euler[cmp] += PI2;
|
|
}
|
|
};
|
|
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var prtcl = pointFlower.particles[i];
|
|
prtcl.update(timeInfo.delta, timeInfo.elapsed);
|
|
repeatPos(prtcl, 0, pointFlower.area.x);
|
|
repeatPos(prtcl, 1, pointFlower.area.y);
|
|
repeatPos(prtcl, 2, pointFlower.area.z);
|
|
repeatEuler(prtcl, 0);
|
|
repeatEuler(prtcl, 1);
|
|
repeatEuler(prtcl, 2);
|
|
|
|
prtcl.alpha = 1.0;//(pointFlower.area.z - prtcl.position[2]) * 0.5;
|
|
|
|
prtcl.zkey = (camera.matrix[2] * prtcl.position[0]
|
|
+ camera.matrix[6] * prtcl.position[1]
|
|
+ camera.matrix[10] * prtcl.position[2]
|
|
+ camera.matrix[14]);
|
|
}
|
|
|
|
// sort
|
|
pointFlower.particles.sort(function(p0, p1){return p0.zkey - p1.zkey;});
|
|
|
|
// update data
|
|
var ipos = pointFlower.positionArrayOffset;
|
|
var ieuler = pointFlower.eulerArrayOffset;
|
|
var imisc = pointFlower.miscArrayOffset;
|
|
for(var i = 0; i < pointFlower.numFlowers; i++) {
|
|
var prtcl = pointFlower.particles[i];
|
|
pointFlower.dataArray[ipos] = prtcl.position[0];
|
|
pointFlower.dataArray[ipos + 1] = prtcl.position[1];
|
|
pointFlower.dataArray[ipos + 2] = prtcl.position[2];
|
|
ipos += 3;
|
|
pointFlower.dataArray[ieuler] = prtcl.euler[0];
|
|
pointFlower.dataArray[ieuler + 1] = prtcl.euler[1];
|
|
pointFlower.dataArray[ieuler + 2] = prtcl.euler[2];
|
|
ieuler += 3;
|
|
pointFlower.dataArray[imisc] = prtcl.size;
|
|
pointFlower.dataArray[imisc + 1] = prtcl.alpha;
|
|
imisc += 2;
|
|
}
|
|
|
|
//draw
|
|
gl.enable(gl.BLEND);
|
|
//gl.disable(gl.DEPTH_TEST);
|
|
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
|
|
|
|
var prog = pointFlower.program;
|
|
useShader(prog);
|
|
|
|
gl.uniformMatrix4fv(prog.uniforms.uProjection, false, projection.matrix);
|
|
gl.uniformMatrix4fv(prog.uniforms.uModelview, false, camera.matrix);
|
|
gl.uniform3fv(prog.uniforms.uResolution, renderSpec.array);
|
|
gl.uniform3fv(prog.uniforms.uDOF, Vector3.arrayForm(camera.dof));
|
|
gl.uniform3fv(prog.uniforms.uFade, Vector3.arrayForm(pointFlower.fader));
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, pointFlower.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, pointFlower.dataArray, gl.DYNAMIC_DRAW);
|
|
|
|
gl.vertexAttribPointer(prog.attributes.aPosition, 3, gl.FLOAT, false, 0, pointFlower.positionArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
gl.vertexAttribPointer(prog.attributes.aEuler, 3, gl.FLOAT, false, 0, pointFlower.eulerArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
gl.vertexAttribPointer(prog.attributes.aMisc, 2, gl.FLOAT, false, 0, pointFlower.miscArrayOffset * Float32Array.BYTES_PER_ELEMENT);
|
|
|
|
// doubler
|
|
for(var i = 1; i < 2; i++) {
|
|
var zpos = i * -2.0;
|
|
pointFlower.offset[0] = pointFlower.area.x * -1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * -1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINT, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * -1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * 1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINT, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * 1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * -1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINT, 0, pointFlower.numFlowers);
|
|
|
|
pointFlower.offset[0] = pointFlower.area.x * 1.0;
|
|
pointFlower.offset[1] = pointFlower.area.y * 1.0;
|
|
pointFlower.offset[2] = pointFlower.area.z * zpos;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINT, 0, pointFlower.numFlowers);
|
|
}
|
|
|
|
//main
|
|
pointFlower.offset[0] = 0.0;
|
|
pointFlower.offset[1] = 0.0;
|
|
pointFlower.offset[2] = 0.0;
|
|
gl.uniform3fv(prog.uniforms.uOffset, pointFlower.offset);
|
|
gl.drawArrays(gl.POINT, 0, pointFlower.numFlowers);
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
unuseShader(prog);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
gl.disable(gl.BLEND);
|
|
}
|
|
|
|
// effects
|
|
//common util
|
|
function createEffectProgram(vtxsrc, frgsrc, exunifs, exattrs) {
|
|
var ret = {};
|
|
var unifs = ['uResolution', 'uSrc', 'uDelta'];
|
|
if(exunifs) {
|
|
unifs = unifs.concat(exunifs);
|
|
}
|
|
var attrs = ['aPosition'];
|
|
if(exattrs) {
|
|
attrs = attrs.concat(exattrs);
|
|
}
|
|
|
|
ret.program = createShader(vtxsrc, frgsrc, unifs, attrs);
|
|
useShader(ret.program);
|
|
|
|
ret.dataArray = new Float32Array([
|
|
-1.0, -1.0,
|
|
1.0, -1.0,
|
|
-1.0, 1.0,
|
|
1.0, 1.0
|
|
]);
|
|
ret.buffer = gl.createBuffer();
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, ret.buffer);
|
|
gl.bufferData(gl.ARRAY_BUFFER, ret.dataArray, gl.STATIC_DRAW);
|
|
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, null);
|
|
unuseShader(ret.program);
|
|
|
|
return ret;
|
|
}
|
|
|
|
// basic usage
|
|
// useEffect(prog, srctex({'texture':texid, 'dtxArray':(f32)[dtx, dty]})); //basic initialize
|
|
// gl.uniform**(...); //additional uniforms
|
|
// drawEffect()
|
|
// unuseEffect(prog)
|
|
// TEXTURE0 makes src
|
|
function useEffect(fxobj, srctex) {
|
|
var prog = fxobj.program;
|
|
useShader(prog);
|
|
gl.uniform3fv(prog.uniforms.uResolution, renderSpec.array);
|
|
|
|
if(srctex != null) {
|
|
gl.uniform2fv(prog.uniforms.uDelta, srctex.dtxArray);
|
|
gl.uniform1i(prog.uniforms.uSrc, 0);
|
|
|
|
gl.activeTexture(gl.TEXTURE0);
|
|
gl.bindTexture(gl.TEXTURE_2D, srctex.texture);
|
|
}
|
|
}
|
|
function drawEffect(fxobj) {
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, fxobj.buffer);
|
|
gl.vertexAttribPointer(fxobj.program.attributes.aPosition, 2, gl.FLOAT, false, 0, 0);
|
|
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
|
|
}
|
|
function unuseEffect(fxobj) {
|
|
unuseShader(fxobj.program);
|
|
}
|
|
|
|
var effectLib = {};
|
|
function createEffectLib() {
|
|
|
|
var vtxsrc, frgsrc;
|
|
//common
|
|
var cmnvtxsrc = document.getElementById("fx_common_vsh").textContent;
|
|
|
|
//background
|
|
frgsrc = document.getElementById("bg_fsh").textContent;
|
|
effectLib.sceneBg = createEffectProgram(cmnvtxsrc, frgsrc, ['uTimes'], null);
|
|
|
|
// make brightpixels buffer
|
|
frgsrc = document.getElementById("fx_brightbuf_fsh").textContent;
|
|
effectLib.mkBrightBuf = createEffectProgram(cmnvtxsrc, frgsrc, null, null);
|
|
|
|
// direction blur
|
|
frgsrc = document.getElementById("fx_dirblur_r4_fsh").textContent;
|
|
effectLib.dirBlur = createEffectProgram(cmnvtxsrc, frgsrc, ['uBlurDir'], null);
|
|
|
|
//final composite
|
|
vtxsrc = document.getElementById("pp_final_vsh").textContent;
|
|
frgsrc = document.getElementById("pp_final_fsh").textContent;
|
|
effectLib.finalComp = createEffectProgram(vtxsrc, frgsrc, ['uBloom'], null);
|
|
}
|
|
|
|
// background
|
|
function createBackground() {
|
|
//console.log("create background");
|
|
}
|
|
function initBackground() {
|
|
//console.log("init background");
|
|
}
|
|
function renderBackground() {
|
|
gl.disable(gl.DEPTH_TEST);
|
|
|
|
useEffect(effectLib.sceneBg, null);
|
|
gl.uniform2f(effectLib.sceneBg.program.uniforms.uTimes, timeInfo.elapsed, timeInfo.delta);
|
|
drawEffect(effectLib.sceneBg);
|
|
unuseEffect(effectLib.sceneBg);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
}
|
|
|
|
// post process
|
|
var postProcess = {};
|
|
function createPostProcess() {
|
|
//console.log("create post process");
|
|
}
|
|
function initPostProcess() {
|
|
//console.log("init post process");
|
|
}
|
|
|
|
function renderPostProcess() {
|
|
gl.enable(gl.TEXTURE_2D);
|
|
gl.disable(gl.DEPTH_TEST);
|
|
var bindRT = function (rt, isclear) {
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, rt.frameBuffer);
|
|
gl.viewport(0, 0, rt.width, rt.height);
|
|
if(isclear) {
|
|
gl.clearColor(0, 0, 0, 0);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
}
|
|
};
|
|
|
|
//make bright buff
|
|
bindRT(renderSpec.wHalfRT0, true);
|
|
useEffect(effectLib.mkBrightBuf, renderSpec.mainRT);
|
|
drawEffect(effectLib.mkBrightBuf);
|
|
unuseEffect(effectLib.mkBrightBuf);
|
|
|
|
// make bloom
|
|
for(var i = 0; i < 2; i++) {
|
|
var p = 1.5 + 1 * i;
|
|
var s = 2.0 + 1 * i;
|
|
bindRT(renderSpec.wHalfRT1, true);
|
|
useEffect(effectLib.dirBlur, renderSpec.wHalfRT0);
|
|
gl.uniform4f(effectLib.dirBlur.program.uniforms.uBlurDir, p, 0.0, s, 0.0);
|
|
drawEffect(effectLib.dirBlur);
|
|
unuseEffect(effectLib.dirBlur);
|
|
|
|
bindRT(renderSpec.wHalfRT0, true);
|
|
useEffect(effectLib.dirBlur, renderSpec.wHalfRT1);
|
|
gl.uniform4f(effectLib.dirBlur.program.uniforms.uBlurDir, 0.0, p, 0.0, s);
|
|
drawEffect(effectLib.dirBlur);
|
|
unuseEffect(effectLib.dirBlur);
|
|
}
|
|
|
|
//display
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
gl.viewport(0, 0, renderSpec.width, renderSpec.height);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
|
|
useEffect(effectLib.finalComp, renderSpec.mainRT);
|
|
gl.uniform1i(effectLib.finalComp.program.uniforms.uBloom, 1);
|
|
gl.activeTexture(gl.TEXTURE1);
|
|
gl.bindTexture(gl.TEXTURE_2D, renderSpec.wHalfRT0.texture);
|
|
drawEffect(effectLib.finalComp);
|
|
unuseEffect(effectLib.finalComp);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
}
|
|
|
|
/////
|
|
var SceneEnv = {};
|
|
function createScene() {
|
|
createEffectLib();
|
|
createBackground();
|
|
createPointFlowers();
|
|
createPostProcess();
|
|
sceneStandBy = true;
|
|
}
|
|
|
|
function initScene() {
|
|
initBackground();
|
|
initPointFlowers();
|
|
initPostProcess();
|
|
|
|
//camera.position.z = 17.320508;
|
|
camera.position.z = pointFlower.area.z + projection.nearfar[0];
|
|
projection.angle = Math.atan2(pointFlower.area.y, camera.position.z + pointFlower.area.z) * 180.0 / Math.PI * 2.0;
|
|
Matrix44.loadProjection(projection.matrix, renderSpec.aspect, projection.angle, projection.nearfar[0], projection.nearfar[1]);
|
|
}
|
|
|
|
function renderScene() {
|
|
//draw
|
|
Matrix44.loadLookAt(camera.matrix, camera.position, camera.lookat, camera.up);
|
|
|
|
gl.enable(gl.DEPTH_TEST);
|
|
|
|
//gl.bindFramebuffer(gl.FRAMEBUFFER, null);
|
|
gl.bindFramebuffer(gl.FRAMEBUFFER, renderSpec.mainRT.frameBuffer);
|
|
gl.viewport(0, 0, renderSpec.mainRT.width, renderSpec.mainRT.height);
|
|
gl.clearColor(0.005, 0, 0.05, 0);
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
|
|
renderBackground();
|
|
renderPointFlowers();
|
|
renderPostProcess();
|
|
}
|
|
|
|
/////
|
|
function onResize(e) {
|
|
makeCanvasFullScreen(document.getElementById("sakura"));
|
|
setViewports();
|
|
if(sceneStandBy) {
|
|
initScene();
|
|
}
|
|
}
|
|
|
|
function setViewports() {
|
|
renderSpec.setSize(gl.canvas.width, gl.canvas.height);
|
|
|
|
gl.clearColor(0.2, 0.2, 0.5, 1.0);
|
|
gl.viewport(0, 0, renderSpec.width, renderSpec.height);
|
|
|
|
var rtfunc = function (rtname, rtw, rth) {
|
|
var rt = renderSpec[rtname];
|
|
if(rt) deleteRenderTarget(rt);
|
|
renderSpec[rtname] = createRenderTarget(rtw, rth);
|
|
};
|
|
rtfunc('mainRT', renderSpec.width, renderSpec.height);
|
|
rtfunc('wFullRT0', renderSpec.width, renderSpec.height);
|
|
rtfunc('wFullRT1', renderSpec.width, renderSpec.height);
|
|
rtfunc('wHalfRT0', renderSpec.halfWidth, renderSpec.halfHeight);
|
|
rtfunc('wHalfRT1', renderSpec.halfWidth, renderSpec.halfHeight);
|
|
}
|
|
|
|
function render() {
|
|
renderScene();
|
|
}
|
|
|
|
var animating = true;
|
|
function toggleAnimation(elm) {
|
|
animating ^= true;
|
|
if(animating) animate();
|
|
if(elm) {
|
|
elm.innerHTML = animating? "Stop":"Start";
|
|
}
|
|
}
|
|
|
|
function stepAnimation() {
|
|
if(!animating) animate();
|
|
}
|
|
|
|
function animate() {
|
|
var curdate = new Date();
|
|
timeInfo.elapsed = (curdate - timeInfo.start) / 1000.0;
|
|
timeInfo.delta = (curdate - timeInfo.prev) / 1000.0;
|
|
timeInfo.prev = curdate;
|
|
|
|
if(animating) requestAnimationFrame(animate);
|
|
render();
|
|
}
|
|
|
|
function makeCanvasFullScreen(canvas) {
|
|
var b = document.body;
|
|
var d = document.documentElement;
|
|
fullw = Math.max(b.clientWidth , b.scrollWidth, d.scrollWidth, d.clientWidth);
|
|
fullh = Math.max(b.clientHeight , b.scrollHeight, d.scrollHeight, d.clientHeight);
|
|
canvas.width = fullw;
|
|
canvas.height = fullh;
|
|
}
|
|
|
|
window.addEventListener('load', function(e) {
|
|
var canvas = document.getElementById("sakura");
|
|
try {
|
|
makeCanvasFullScreen(canvas);
|
|
gl = canvas.getContext('experimental-webgl');
|
|
} catch(e) {
|
|
alert("WebGL not supported." + e);
|
|
console.error(e);
|
|
return;
|
|
}
|
|
|
|
window.addEventListener('resize', onResize);
|
|
|
|
setViewports();
|
|
createScene();
|
|
initScene();
|
|
|
|
timeInfo.start = new Date();
|
|
timeInfo.prev = timeInfo.start;
|
|
animate();
|
|
});
|
|
|
|
//set window.requestAnimationFrame
|
|
(function (w, r) {
|
|
w['r'+r] = w['r'+r] || w['webkitR'+r] || w['mozR'+r] || w['msR'+r] || w['oR'+r] || function(c){ w.setTimeout(c, 1000 / 60); };
|
|
})(window, 'equestAnimationFrame'); |