/src/away3d/materials/methods/TripleFilteredShadowMapMethod.as

http://github.com/away3d/away3d-core-fp11 · ActionScript · 194 lines · 146 code · 36 blank · 12 comment · 1 complexity · 414565af80f14e1e1c22fdc3420bc425 MD5 · raw file 

    

  1. package away3d.materials.methods
    2. 

  2. {
    3. 

  3. 	import away3d.arcane;
    4. 

  4. 	import away3d.lights.DirectionalLight;
    5. 

  5. 	import away3d.lights.PointLight;
    6. 

  6. 	import away3d.materials.compilation.ShaderRegisterCache;
    7. 

  7. 	import away3d.materials.compilation.ShaderRegisterElement;
    8. 

  8. 	
    9. 

  9. 	use namespace arcane;
    10. 

  10. 	
    11. 

  11. 	[Deprecated(message="Please consider any of the superior shadow map methods: SoftShadowMapMethod or DitheredShadowMapMethod")]
    12. 

  12. 	public class TripleFilteredShadowMapMethod extends SimpleShadowMapMethodBase
    13. 

  13. 	{
    14. 

  14. 		/**
    15. 

  15. 		 * Creates a new BasicDiffuseMethod object.
    16. 

  16. 		 *
    17. 

  17. 		 * @param castingLight The light casting the shadow
    18. 

  18. 		 */
    19. 

  19. 		public function TripleFilteredShadowMapMethod(castingLight:DirectionalLight)
    20. 

  20. 		{
    21. 

  21. 			super(castingLight);
    22. 

  22. 			if (castingLight is PointLight)
    23. 

  23. 				throw new Error("FilteredShadowMapMethod not supported for Point Lights");
    24. 

  24. 		}
    25. 

  25. 		
    26. 

  26. 		override arcane function initConstants(vo:MethodVO):void
    27. 

  27. 		{
    28. 

  28. 			super.initConstants(vo);
    29. 

  29. 			var fragmentData:Vector.<Number> = vo.fragmentData;
    30. 

  30. 			var index:int = vo.fragmentConstantsIndex;
    31. 

  31. 			
    32. 

  32. 			fragmentData[index + 8] = 1/3;
    33. 

  33. 			fragmentData[index + 9] = castingLight.shadowMapper.depthMapSize;
    34. 

  34. 			fragmentData[index + 10] = 1/castingLight.shadowMapper.depthMapSize;
    35. 

  35. 		}
    36. 

  36. 		
    37. 

  37. 		/**
    38. 

  38. 		 * @inheritDoc
    39. 

  39. 		 */
    40. 

  40. 		override protected function getPlanarFragmentCode(vo:MethodVO, regCache:ShaderRegisterCache, targetReg:ShaderRegisterElement):String
    41. 

  41. 		{
    42. 

  42. 			var depthMapRegister:ShaderRegisterElement = regCache.getFreeTextureReg();
    43. 

  43. 			var decReg:ShaderRegisterElement = regCache.getFreeFragmentConstant();
    44. 

  44. 			var dataReg:ShaderRegisterElement = regCache.getFreeFragmentConstant();
    45. 

  45. 			var customDataReg:ShaderRegisterElement = regCache.getFreeFragmentConstant();
    46. 

  46. 			var depthCol:ShaderRegisterElement = regCache.getFreeFragmentVectorTemp();
    47. 

  47. 			var uvReg:ShaderRegisterElement;
    48. 

  48. 			var code:String;
    49. 

  49. 			vo.fragmentConstantsIndex = decReg.index*4;
    50. 

  50. 			
    51. 

  51. 			regCache.addFragmentTempUsages(depthCol, 1);
    52. 

  52. 			
    53. 

  53. 			uvReg = regCache.getFreeFragmentVectorTemp();
    54. 

  54. 			regCache.addFragmentTempUsages(uvReg, 1);
    55. 

  55. 			
    56. 

  56. 			var viewDirReg:ShaderRegisterElement = _sharedRegisters.viewDirFragment;
    57. 

  57. 			
    58. 

  58. 			code = "mov " + uvReg + ", " + _depthMapCoordReg + "\n" +
    59. 

  59. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    60. 

  60. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    61. 

  61. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z	\n" +    // 0 if in shadow
    62. 

  62. 				
    63. 

  63. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z		\n" + // (1, 0)
    64. 

  64. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    65. 

  65. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    66. 

  66. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z		\n" +    // 0 if in shadow
    67. 

  67. 				
    68. 

  68. 				"div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z		\n" +
    69. 

  69. 				"frc " + depthCol + ".x, " + depthCol + ".x		\n" +
    70. 

  70. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z		\n" +
    71. 

  71. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x		\n" +
    72. 

  72. 				"add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w		\n" +
    73. 

  73. 				
    74. 

  74. 				"sub " + uvReg + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z	\n" +
    75. 

  75. 				"add " + uvReg + ".y, " + _depthMapCoordReg + ".y, " + customDataReg + ".z	\n" +	// (0, 1)
    76. 

  76. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    77. 

  77. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    78. 

  78. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z		\n" +   // 0 if in shadow
    79. 

  79. 				
    80. 

  80. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z						\n" +	// (1, 1)
    81. 

  81. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    82. 

  82. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    83. 

  83. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z			\n" +   // 0 if in shadow
    84. 

  84. 				
    85. 

  85. 				// recalculate fraction, since we ran out of registers :(
    86. 

  86. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y			\n" +
    87. 

  87. 				"frc " + depthCol + ".x, " + depthCol + ".x								\n" +
    88. 

  88. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z					\n" +
    89. 

  89. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x				\n" +
    90. 

  90. 				"add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w					\n" +
    91. 

  91. 				
    92. 

  92. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y		\n" +
    93. 

  93. 				"frc " + depthCol + ".x, " + depthCol + ".x								\n" +
    94. 

  94. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w		\n" +
    95. 

  95. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x					\n" +
    96. 

  96. 				"add " + targetReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w	\n" +
    97. 

  97. 				
    98. 

  98. 				
    99. 

  99. 				"sub " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz		\n" +
    100. 

  100. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    101. 

  101. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    102. 

  102. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z	\n" +   // 0 if in shadow
    103. 

  103. 				
    104. 

  104. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z			\n" +	// (1, 0)
    105. 

  105. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    106. 

  106. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    107. 

  107. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z					\n" +   // 0 if in shadow
    108. 

  108. 				
    109. 

  109. 				"div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z		\n" +
    110. 

  110. 				"frc " + depthCol + ".x, " + depthCol + ".x								\n" +
    111. 

  111. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z					\n" +
    112. 

  112. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x					\n" +
    113. 

  113. 				"add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w	\n" +
    114. 

  114. 				
    115. 

  115. 				"mov " + uvReg + ".x, " + _depthMapCoordReg + ".x							\n" +
    116. 

  116. 				"add " + uvReg + ".y, " + uvReg + ".y, " + customDataReg + ".z				\n" +	// (0, 1)
    117. 

  117. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    118. 

  118. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    119. 

  119. 				"sub " + depthCol + ".z, " + depthCol + ".z, " + dataReg + ".x		\n" +	// offset by epsilon
    120. 

  120. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z		\n" +   // 0 if in shadow
    121. 

  121. 				
    122. 

  122. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z				\n" +	// (1, 1)
    123. 

  123. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    124. 

  124. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    125. 

  125. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z		\n" +   // 0 if in shadow
    126. 

  126. 				
    127. 

  127. 				// recalculate fraction, since we ran out of registers :(
    128. 

  128. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y		\n" +
    129. 

  129. 				"frc " + depthCol + ".x, " + depthCol + ".x								\n" +
    130. 

  130. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z					\n" +
    131. 

  131. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x				\n" +
    132. 

  132. 				"add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w					\n" +
    133. 

  133. 				
    134. 

  134. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y					\n" +
    135. 

  135. 				"frc " + depthCol + ".x, " + depthCol + ".x											\n" +
    136. 

  136. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w				\n" +
    137. 

  137. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x							\n" +
    138. 

  138. 				"add " + viewDirReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w	\n" +
    139. 

  139. 				"add " + targetReg + ".w, " + targetReg + ".w, " + viewDirReg + ".w		\n";
    140. 

  140. 			
    141. 

  141. 			code += "add " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz						\n" +	// (1, 0)
    142. 

  142. 				//					"mov " + uvReg + ".y, " + _depthMapVar + ".y										\n" +	// (1, 0)
    143. 

  143. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    144. 

  144. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    145. 

  145. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z					\n" +   // 0 if in shadow
    146. 

  146. 				
    147. 

  147. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z							\n" +	// (2, 0)
    148. 

  148. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    149. 

  149. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    150. 

  150. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z					\n" +   // 0 if in shadow
    151. 

  151. 				
    152. 

  152. 				"div " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".z					\n" +
    153. 

  153. 				"frc " + depthCol + ".x, " + depthCol + ".x											\n" +
    154. 

  154. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z								\n" +
    155. 

  155. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x							\n" +
    156. 

  156. 				"add " + viewDirReg + ".w, " + uvReg + ".z, " + uvReg + ".w				\n" +
    157. 

  157. 				
    158. 

  158. 				"add " + uvReg + ".xy, " + _depthMapCoordReg + ".xy, " + customDataReg + ".zz				\n" +	// (0, 1)
    159. 

  159. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    160. 

  160. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    161. 

  161. 				"slt " + uvReg + ".z, " + _depthMapCoordReg + ".z, " + depthCol + ".z					\n" +   // 0 if in shadow
    162. 

  162. 				
    163. 

  163. 				"add " + uvReg + ".x, " + uvReg + ".x, " + customDataReg + ".z							\n" +	// (1, 1)
    164. 

  164. 				"tex " + depthCol + ", " + uvReg + ", " + depthMapRegister + " <2d, nearest, clamp>\n" +
    165. 

  165. 				"dp4 " + depthCol + ".z, " + depthCol + ", " + decReg + "\n" +
    166. 

  166. 				"slt " + uvReg + ".w, " + _depthMapCoordReg + ".z, " + depthCol + ".z						\n" +   // 0 if in shadow
    167. 

  167. 				
    168. 

  168. 				// recalculate fraction, since we ran out of registers :(
    169. 

  169. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".x, " + customDataReg + ".y		\n" +
    170. 

  170. 				"frc " + depthCol + ".x, " + depthCol + ".x											\n" +
    171. 

  171. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + uvReg + ".z								\n" +
    172. 

  172. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x							\n" +
    173. 

  173. 				"add " + uvReg + ".w, " + uvReg + ".z, " + uvReg + ".w								\n" +
    174. 

  174. 				
    175. 

  175. 				"mul " + depthCol + ".x, " + _depthMapCoordReg + ".y, " + customDataReg + ".y			\n" +
    176. 

  176. 				"frc " + depthCol + ".x, " + depthCol + ".x											\n" +
    177. 

  177. 				"sub " + uvReg + ".w, " + uvReg + ".w, " + viewDirReg + ".w				\n" +
    178. 

  178. 				"mul " + uvReg + ".w, " + uvReg + ".w, " + depthCol + ".x							\n" +
    179. 

  179. 				"add " + viewDirReg + ".w, " + viewDirReg + ".w, " + uvReg + ".w	\n" +
    180. 

  180. 				"add " + targetReg + ".w, " + targetReg + ".w, " + viewDirReg + ".w		\n" +
    181. 

  181. 				
    182. 

  182. 				
    183. 

  183. 				"mul " + targetReg + ".w, " + targetReg + ".w, " + customDataReg + ".x					\n";
    184. 

  184. 			
    185. 

  185. 			regCache.removeFragmentTempUsage(depthCol);
    186. 

  186. 			regCache.removeFragmentTempUsage(uvReg);
    187. 

  187. 			
    188. 

  188. 			vo.texturesIndex = depthMapRegister.index;
    189. 

  189. 			
    190. 

  190. 			return code;
    191. 

  191. 		}
    192. 

  192. 	
    193. 

  193. 	}
    194. 

  194. }
    195.