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true calculation of distance

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This commit is contained in:
Leonid Gaev
2012-04-26 15:02:38 +06:00
parent 065b843b13
commit 3e4183293a
3 changed files with 107 additions and 98 deletions
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16
src/alternativa/engine3d/lights/OmniLight.as
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@@ -32,7 +32,7 @@ package alternativa.engine3d.lights {
/**
* Distance from at which falloff is complete.
*/
public var attenuationEnd:Number;
public var _attenuationEnd:Number;
/**
* Creates a OmniLight object.
@@ -211,5 +211,19 @@ package alternativa.engine3d.lights {
var omniShadow:OmniLightShadow = value as OmniLightShadow;
if (omniShadow!=null) omniShadow.setBoundSize(this.attenuationEnd*1.5);
}
public function get attenuationEnd():Number{
return _attenuationEnd;
}
/**
* @private
*/
public function set attenuationEnd(value:Number):void{
// TODO: recalculate BoundBox
_attenuationEnd = value;
var omniShadow:OmniLightShadow = shadow as OmniLightShadow;
if (omniShadow!=null) omniShadow.setBoundSize(this._attenuationEnd*1.0);
}
}
}

11
src/alternativa/engine3d/materials/StandardMaterial.as
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@@ -467,13 +467,22 @@ package alternativa.engine3d.materials {
// i3 - ambient
// i2 - shadow-test
source.push("mul t0.xw, t0.xw, i2.xw");
source.push("mul t0.xw, t0.xwww, i2.xxxx");
source.push("mul t0.xyz, c1.xyz, t0.xxx"); // t = color*t
source.push("mul t1.xyz, t0.xyz, t1.w");
source.push("add o1.xyz, o1.xyz, t1.xyz");
source.push("mul t0.xyz, t0.xyz, t0.www");
source.push("add o0.xyz, t0.xyz, i3.xyz");
// source.push("mov o1, t1");
// source.push("mov o1, c1");
// source.push("mov o1, i2");
// source.push("mov o1, i3");
// source.push("sub o1, t0, t0");
//
// source.push("mov o0.xyz, i2.x");
// source.push("div o0.w, i2.x, i2.x");
} else {
// Считаем вектор из точки к свету

178
src/alternativa/engine3d/shadows/OmniLightShadow.as
View File

@@ -48,7 +48,7 @@ package alternativa.engine3d.shadows {
private var renderer:Renderer = new Renderer();
private var boundSize:Number = 1;
private var radius:Number = 1;
private var _mapSize:Number;
private var _pcfOffset:Number;
@@ -90,9 +90,9 @@ package alternativa.engine3d.shadows {
for (var i:int = 0; i < 6; i++) {
// создаем камеры
var cam:Camera3D = new Camera3D(1, boundSize);
var cam:Camera3D = new Camera3D(10, radius);
cam.fov = 1.910633237;
cam.view = new View(boundSize, boundSize);
cam.view = new View(radius, radius);
cam.renderer = renderer;
cameras[i] = cam;
@@ -131,7 +131,7 @@ package alternativa.engine3d.shadows {
* @private
*/
alternativa3d function setBoundSize(value:Number):void{
this.boundSize = value;
this.radius = value;
for (var i:int = 0; i < 6; i++) {
var cam:Camera3D = cameras[i];
cam.view.width = cam.view.height = int (value);
@@ -216,23 +216,23 @@ package alternativa.engine3d.shadows {
caster.lightToLocalTransform.combine(caster.cameraToLocalTransform, _light.localToCameraTransform);
caster.localToLightTransform.combine(_light.cameraToLocalTransform, caster.localToCameraTransform);
var skin:Skin = caster as Skin;
if (skin != null) {
// Расчет матриц джоинтов
for (var child:Object3D = skin.childrenList; child != null; child = child.next) {
if (child.transformChanged) child.composeTransforms();
// Записываем в localToGlobalTransform матрицу перевода в скин
child.localToGlobalTransform.copy(child.transform);
if (child is Joint) {
Joint(child).calculateTransform();
}
skin.calculateJointsTransforms(child);
}
}
else{
if (caster.childrenList)
calculateChildrenTransforms(caster);
}
if (caster.childrenList)
calculateChildrenTransforms(caster);
// var skin:Skin = caster as Skin;
// if (skin != null) {
// // Расчет матриц джоинтов
// for (var child:Object3D = skin.childrenList; child != null; child = child.next) {
// if (child.transformChanged) child.composeTransforms();
// // Записываем в localToGlobalTransform матрицу перевода в скин
// child.localToGlobalTransform.copy(child.transform);
// if (child is Joint) {
// Joint(child).calculateTransform();
// }
// skin.calculateJointsTransforms(child);
// }
// }
}
@@ -294,7 +294,7 @@ package alternativa.engine3d.shadows {
// Создаем дебаговый объект, если он не создан
if (debugObject == null) {
debugObject = createDebugCube(debugMaterial, camera.context3D);
debugObject.scaleX = debugObject.scaleY = debugObject.scaleZ = boundSize/12;
debugObject.scaleX = debugObject.scaleY = debugObject.scaleZ = radius/12;
debugObject.composeTransforms();
}
@@ -320,24 +320,23 @@ package alternativa.engine3d.shadows {
child.localToLightTransform.combine(root.localToLightTransform, child.transform);
child.lightToLocalTransform.combine(child.inverseTransform, root.lightToLocalTransform);
// расчет матриц трансформаций для скинов
var skin:Skin = child as Skin;
if (skin != null) {
// Расчет матриц джоинтов
for (var skinChild:Object3D = skin.childrenList; skinChild != null; skinChild = skinChild.next) {
if (skinChild.transformChanged) skinChild.composeTransforms();
// Записываем в localToGlobalTransform матрицу перевода в скин
skinChild.localToGlobalTransform.copy(skinChild.transform);
if (skinChild is Joint) {
Joint(skinChild).calculateTransform();
}
skin.calculateJointsTransforms(skinChild);
}
}
else{
if (child.childrenList)
calculateChildrenTransforms(child);
}
if (child.childrenList)
calculateChildrenTransforms(child);
// // расчет матриц трансформаций для скинов
// var skin:Skin = child as Skin;
// if (skin != null) {
// // Расчет матриц джоинтов
// for (var skinChild:Object3D = skin.childrenList; skinChild != null; skinChild = skinChild.next) {
// if (skinChild.transformChanged) skinChild.composeTransforms();
// // Записываем в localToGlobalTransform матрицу перевода в скин
// skinChild.localToGlobalTransform.copy(skinChild.transform);
// if (skinChild is Joint) {
// Joint(skinChild).calculateTransform();
// }
// skin.calculateJointsTransforms(skinChild);
// }
// }
}
}
@@ -357,26 +356,14 @@ package alternativa.engine3d.shadows {
casterCulling = 63;
}
// Если Кулинг кастера дает положительный результат, тогда
if (casterCulling){
if (skin){
actualCasters[actualCastersCount++] = root;
}
else{
var childrenList:Object3D = root.childrenList;
// Если есть дочерние объекты,
if(childrenList!=null){
// Проверяем их на кулинг
for (var child:Object3D = childrenList; child != null; child = child.next) {
calculateVisibility(child, camera);
}
}
// Если дочерних объектов нет
else{
// добавляем кастер в список актуальных кастеров
actualCasters[actualCastersCount++] = root;
}
}
// добавляем кастер в список актуальных кастеров
if (casterCulling)
actualCasters[actualCastersCount++] = root;
// Если есть дочерние объекты,
// Проверяем их на кулинг
for (var child:Object3D = root.childrenList; child != null; child = child.next) {
calculateVisibility(child, camera);
}
}
}
@@ -458,17 +445,11 @@ package alternativa.engine3d.shadows {
drawUnit.setProjectionConstants(edgeCamera, program.vertexShader.getVariableIndex("cProjMatrix"), casterToEdgedCameraTransform);
drawUnit.setVertexConstantsFromTransform(program.vertexShader.getVariableIndex("cCasterToOmni"), caster.localToLightTransform);
drawUnit.setVertexConstantsFromNumbers(program.vertexShader.getVariableIndex("cScale"), 255/boundSize, 0, 0, 1);
drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cConstants"), 1 / 255, 0, 0, 1);
drawUnit.setFragmentConstantsFromNumbers(program.fragmentShader.getVariableIndex("cConstants"), 1 / 255, 0, 255/radius, 1);
renderer.addDrawUnit(drawUnit, Renderer.OPAQUE);
}
}
var child:Object3D;
for (child = caster.childrenList; child != null; child = child.next) {
if (!(child as Joint) && child.visible) collectDraws(context, child, edgeCamera);
}
}
@@ -525,15 +506,10 @@ package alternativa.engine3d.shadows {
}
var proc:Procedure = Procedure.compileFromArray([
"#c1=cScale",
"#v0=vDistance",
"m34 t0.xyz, i0, c2",
"dp3 t0.x, t0.xyz, t0.xyz",
"sqt t0.x, t0.x", // x: [0, boundSize]
"mul t0.x, t0.x, c1.x", // x: [0, 255]
"mov t0.w, c1.w",
"mov v0, t0",
"mov v0, t0.xyzx",
"m44 o0, i0, c0"
]);
@@ -550,13 +526,18 @@ package alternativa.engine3d.shadows {
}
}
fLinker.addProcedure(Procedure.compileFromArray([
"#v0=vDistance", // x: [0, 255]
"#c0=cConstants", // 1/255, 0, 0, 1
"frc t0.y, v0.x",
"sub t0.x, v0.x, t0.y",
"#v0=vDistance", // xyz
"#c0=cConstants", // 1/255, 0, 255/radius, 1
// calculate distance
"dp3 t0.z, v0.xyz, v0.xyz",
"sqt t0.z, t0.z", // x: [0, radius]
"mul t0.z, t0.z, c0.z", // x: [0, 255]
// codeing
"frc t0.y, t0.z",
"sub t0.x, t0.z, t0.y",
"mul t0.x, t0.x, c0.x",
"mov t0.zw, c0.zw",
"mov t0.w, c0.w",
"mov o0, t0"
]));
program = new ShaderProgram(vLinker, fLinker);
@@ -570,7 +551,7 @@ package alternativa.engine3d.shadows {
//------------- ShadowMap Shader ----------
//------------- ShadowMap Shader in material----------
/**
* @private
@@ -587,13 +568,14 @@ package alternativa.engine3d.shadows {
// TODO: сделать множитель более корректный. Возможно 65536 (разрешающая способность глубины буфера).
if (_pcfOffset > 0) {
var offset:Number = _pcfOffset*0.0175; //1 градус
var offset:Number = _pcfOffset*0.0175; //TODO: make equivalent 1 offset ~ 1 degree
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cPCFOffsets"), -3/2, 1/16, 0, 0);
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -1, 1, 0, offset/boundSize);
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cDecode"), -10000, -10000/255, biasMultiplier*10000/boundSize, 10);
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -1, 1, 0, offset/radius);
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cDecode"), -10000, -10000/255, biasMultiplier*10000/radius, 10);
}
else{
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -10000, -10000/255, biasMultiplier*10000/boundSize, 1);
drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -10000, -10000/255, biasMultiplier*10000/radius, 1.0);
// drawUnit.setFragmentConstantsFromNumbers(fragmentLinker.getVariableIndex("cConstants"), -100000, -100000/255, 1/radius, 1);
}
}
@@ -602,11 +584,8 @@ package alternativa.engine3d.shadows {
"#v0=vSample",
"m34 t0.xyz, i0, c0",
"dp3 t0.w, t0.xyz, t0.xyz",
"sqt t0.w, t0.w", // w: [0, boundSize]
// "div t0.xyz, t0.xyz, t0.w", // norm
"mov v0, t0"
"mov v0, t0.xyz"
], "OmniShadowMapVertex");
shader.assignVariableName(VariableType.CONSTANT, 0, "cObjectToLightTransform", 3);
return shader;
@@ -620,14 +599,20 @@ package alternativa.engine3d.shadows {
];
var line:int = 3;
// Расстояние
shaderArr[line++] = "mov t0.z, v0.w"; // w: [0, boundSize]
shaderArr[line++] = "tex t0.xy, v0, s0 <cube, linear>";
shaderArr[line++] = "dp3 t0.z, v0.xyz, v0.xyz";
shaderArr[line++] = "sqt t0.z, t0.z"; // w: [0, radius]
shaderArr[line++] = "tex t0.xy, v0, s0 <cube, nearest>";
shaderArr[line++] = "dp3 t0.x, t0.xyz, c0.xyz"; // декодируем, находим разницу между расстояниями и умножаем ее на большое число
// рассчитываем значение тени
shaderArr[line++] = "sat t0, t0.x";
shaderArr[line++] = "sub o0, c0.w, t0.x";
// shaderArr[line++] = "sat t0.x, t0.x";
// shaderArr[line++] = "sub t0.x, c0.w, t0.x";
// shaderArr[line++] = "sat t0.x, t0.x";
// shaderArr[line++] = "mov o0, t0.x";
return Procedure.compileFromArray(shaderArr, "OmniShadowMapFragment");
}
@@ -645,7 +630,6 @@ package alternativa.engine3d.shadows {
// допустимо использование временных переменных t0 t1 t2 t3
// v0 - sample
// v0.w - length(sample) [0, boundSize]
// ищем 2-а перпендикулярных вектора
// (-y, x, 0)
@@ -659,7 +643,9 @@ package alternativa.engine3d.shadows {
shaderArr[line++] = "nrm t1.xyz, t1.xyz";
// задаем оффсеты
shaderArr[line++] = "mul t0.w, c1.w, v0.w"; // с1.w = offset/boundSize
shaderArr[line++] = "dp3 t3.z, v0.xyz, v0.xyz";
shaderArr[line++] = "sqt t3.z, t3.z"; // w: [0, radius]
shaderArr[line++] = "mul t0.w, c1.w, t3.z"; // с1.w = offset/radius
shaderArr[line++] = "mul t0.xyz, t0.xyz, t0.w";
shaderArr[line++] = "mul t1.xyz, t1.xyz, t0.w";
// --------- {13 opcode}
@@ -677,9 +663,9 @@ package alternativa.engine3d.shadows {
shaderArr[line++] = "add t2.xyz, t2.xyz, v0.xyz";
// получаем длинну из шадоумапы [0, 1]
shaderArr[line++] = "mov t3.z, v0.w";
// shaderArr[line++] = "mov t3.z, t0.w";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, linear>";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
shaderArr[line++] = "dp3 o0." +componentByIndex[0] + ", t3.xyz, c0.xyz"; // декодируем, вычитаем, умножаем на большое число
//-----
@@ -687,7 +673,7 @@ package alternativa.engine3d.shadows {
for (j = 1; j<4; j++){
shaderArr[line++] = "add t2.xyz, t2.xyz, t1.xyz";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, linear>";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
shaderArr[line++] = "dp3 o0." +componentByIndex[j] + ", t3.xyz, c0.xyz"; // декодируем, вычитаем, умножаем на большое число
}
@@ -699,13 +685,13 @@ package alternativa.engine3d.shadows {
for (i = 0; i<3; i++){
shaderArr[line++] = "add t2.xyz, t2.xyz, t0.xyz";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, linear>";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
shaderArr[line++] = "dp3 o0." +componentByIndex[0] + ", t3.xyz, c0.xyz"; // декодируем, вычитаем, умножаем на большое число
for (j = 1; j<4; j++){
shaderArr[line++] = (i%2 == 1)?("add t2.xyz, t2.xyz, t1.xyz"):("sub t2.xyz, t2.xyz, t1.xyz");
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, linear>";
shaderArr[line++] = "tex t3.xy, t2.xyz, s0 <cube, nearest>";
shaderArr[line++] = "dp3 o0." +componentByIndex[j] + ", t3.xyz, c0.xyz"; // декодируем, вычитаем, умножаем на большое число
}
shaderArr[line++] = "sat o0, o0";