/src/away3d/materials/methods/TripleFilteredShadowMapMethod.as
ActionScript | 194 lines | 146 code | 36 blank | 12 comment | 1 complexity | 414565af80f14e1e1c22fdc3420bc425 MD5 | raw file
1package away3d.materials.methods 2{ 3 import away3d.arcane; 4 import away3d.lights.DirectionalLight; 5 import away3d.lights.PointLight; 6 import away3d.materials.compilation.ShaderRegisterCache; 7 import away3d.materials.compilation.ShaderRegisterElement; 8 9 use namespace arcane; 10 11 [Deprecated(message="Please consider any of the superior shadow map methods: SoftShadowMapMethod or DitheredShadowMapMethod")] 12 public class TripleFilteredShadowMapMethod extends SimpleShadowMapMethodBase 13 { 14 /** 15 * Creates a new BasicDiffuseMethod object. 16 * 17 * @param castingLight The light casting the shadow 18 */ 19 public function TripleFilteredShadowMapMethod(castingLight:DirectionalLight) 20 { 21 super(castingLight); 22 if (castingLight is PointLight) 23 throw new Error("FilteredShadowMapMethod not supported for Point Lights"); 24 } 25 26 override arcane function initConstants(vo:MethodVO):void 27 { 28 super.initConstants(vo); 29 var fragmentData:Vector.<Number> = vo.fragmentData; 30 var index:int = vo.fragmentConstantsIndex; 31 32 fragmentData[index + 8] = 1/3; 33 fragmentData[index + 9] = castingLight.shadowMapper.depthMapSize; 34 fragmentData[index + 10] = 1/castingLight.shadowMapper.depthMapSize; 35 } 36 37 /** 38 * @inheritDoc 39 */ 40 override protected function getPlanarFragmentCode(vo:MethodVO, regCache:ShaderRegisterCache, targetReg:ShaderRegisterElement):String 41 { 42 var depthMapRegister:ShaderRegisterElement = regCache.getFreeTextureReg(); 43 var decReg:ShaderRegisterElement = regCache.getFreeFragmentConstant(); 44 var dataReg:ShaderRegisterElement = regCache.getFreeFragmentConstant(); 45 var customDataReg:ShaderRegisterElement = regCache.getFreeFragmentConstant(); 46 var depthCol:ShaderRegisterElement = regCache.getFreeFragmentVectorTemp(); 47 var uvReg:ShaderRegisterElement; 48 var code:String; 49 vo.fragmentConstantsIndex = decReg.index*4; 50 51 regCache.addFragmentTempUsages(depthCol, 1); 52 53 uvReg = regCache.getFreeFragmentVectorTemp(); 54 regCache.addFragmentTempUsages(uvReg, 1); 55 56 var viewDirReg:ShaderRegisterElement = _sharedRegisters.viewDirFragment; 57 58 code = "mov " + uvReg + ", " + _depthMapCoordReg + "\n" + 59 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 60 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 61 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 62 63 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (1, 0) 64 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 65 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 66 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 67 68 "div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z \n" + 69 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 70 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 71 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 72 "add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 73 74 "sub " + uvReg + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z \n" + 75 "add " + uvReg + ".y, " + _depthMapCoordReg + ".y, " + customDataReg + ".z \n" + // (0, 1) 76 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 77 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 78 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 79 80 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (1, 1) 81 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 82 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 83 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 84 85 // recalculate fraction, since we ran out of registers :( 86 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y \n" + 87 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 88 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 89 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 90 "add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 91 92 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y \n" + 93 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 94 "sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w \n" + 95 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 96 "add " + targetReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w \n" + 97 98 99 "sub " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz \n" + 100 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 101 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 102 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 103 104 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (1, 0) 105 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 106 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 107 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 108 109 "div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z \n" + 110 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 111 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 112 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 113 "add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 114 115 "mov " + uvReg + ".x, " + _depthMapCoordReg + ".x \n" + 116 "add " + uvReg + ".y, " + uvReg + ".y, " + customDataReg + ".z \n" + // (0, 1) 117 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 118 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 119 "sub " + depthCol + ".z, " + depthCol + ".z, " + dataReg + ".x \n" + // offset by epsilon 120 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 121 122 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (1, 1) 123 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 124 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 125 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 126 127 // recalculate fraction, since we ran out of registers :( 128 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y \n" + 129 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 130 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 131 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 132 "add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 133 134 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y \n" + 135 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 136 "sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w \n" + 137 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 138 "add " + viewDirReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w \n" + 139 "add " + targetReg + ".w, " + targetReg + ".w, " + viewDirReg + ".w \n"; 140 141 code += "add " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz \n" + // (1, 0) 142 // "mov " + uvReg + ".y, " + _depthMapVar + ".y \n" + // (1, 0) 143 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 144 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 145 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 146 147 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (2, 0) 148 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 149 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 150 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 151 152 "div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z \n" + 153 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 154 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 155 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 156 "add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 157 158 "add " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz \n" + // (0, 1) 159 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 160 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 161 "slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 162 163 "add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z \n" + // (1, 1) 164 "tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" + 165 "dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" + 166 "slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z \n" + // 0 if in shadow 167 168 // recalculate fraction, since we ran out of registers :( 169 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y \n" + 170 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 171 "sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z \n" + 172 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 173 "add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w \n" + 174 175 "mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y \n" + 176 "frc " + depthCol + ".x, " + depthCol + ".x \n" + 177 "sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w \n" + 178 "mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x \n" + 179 "add " + viewDirReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w \n" + 180 "add " + targetReg + ".w, " + targetReg + ".w, " + viewDirReg + ".w \n" + 181 182 183 "mul " + targetReg + ".w, " + targetReg + ".w, " + customDataReg + ".x \n"; 184 185 regCache.removeFragmentTempUsage(depthCol); 186 regCache.removeFragmentTempUsage(uvReg); 187 188 vo.texturesIndex = depthMapRegister.index; 189 190 return code; 191 } 192 193 } 194}