1 | #pragma once
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2 |
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3 | //disable inheritance warning caused by multiple inheritance
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4 | #if _WIN32
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5 | #if _MSC_VER
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6 | #pragma warning(disable: 4250)
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7 | #endif
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8 | #endif
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9 |
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10 | #include "OgreRenderTechnique.h"
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11 | #include "CausticReceiverRenderTechnique.h"
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12 | #include "Ogre.h"
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13 |
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14 | using namespace Ogre;
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15 |
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16 | /**
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17 | @brief CausticReceiverRenderTechnique used in an OGRE environment.
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18 |
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19 | This technique defines that the object will recieve caustic lighting from caustic caster objects.
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20 | The caustic light spots will be calculated by the caustic caster's RenderingRuns.
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21 | These runs will only be updated if caustic redievers are visible, so it is the receiver technique's
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22 | responsibility to update them.
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23 |
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24 | Each caustic caster's light contribution will be added in separate passes. Each pass
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25 | will add some light to the shaded image, so these passes should be the last passes.
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26 | In the constructor the given Pass* parameter will be the pass after which the caustic lighting
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27 | passes will be added by the technique.
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28 | */
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29 | class OgreCausticReceiverRenderTechnique : public OgreRenderTechnique,
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30 | public CausticReceiverRenderTechnique
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31 | {
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32 | public:
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33 | /**
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34 | @brief Constructor.
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35 |
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36 | @param maxcasters the maximum number of caustic casters from which this receiver can recieve caustic light
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37 | @param causticVertexProgram the vertex program to be used in the caustic gathering passes
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38 | @param causticFragmentProgram the fragment program to be used in the caustic gathering passes.
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39 | It should have one pass and the caustic cubemap of a caster will be bound to the first sampler unit.
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40 | @param passBlendingSRC source blend factor of the new passes
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41 | @param passBlendingDEST destination blend factor of the new passes
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42 | @param pass the pass after which caustic gathering passes should be added
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43 | @param parentRenderable the object to operate on
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44 | @param parentTechniqueGroup the TechniqueGroup this RenderedTechnique is attached to
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45 | */
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46 | OgreCausticReceiverRenderTechnique(
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47 | int maxcasters,
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48 | String causticVertexProgram,
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49 | String causticFragmentProgram,
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50 | SceneBlendFactor passBlendingSRC,
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51 | SceneBlendFactor passBlendingDEST,
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52 | bool createNewPasses,
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53 | int startTextureUnitID,
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54 | String casterCenterVariableName,
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55 | String attenuationVariableName,
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56 | Pass* pass,
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57 | OgreRenderable* parentRenderable,
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58 | OgreTechniqueGroup* parentTechniqueGroup
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59 | );
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60 | /**
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61 | @brief Destructor.
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62 | */
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63 | virtual ~OgreCausticReceiverRenderTechnique();
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64 |
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65 | //inherited
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66 | virtual void update(unsigned long frameNum);
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67 |
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68 | protected:
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69 | /**
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70 | @brief the maximum number of caustic casters from which this receiver can recieve caustic light
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71 | */
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72 | int maxcasters;
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73 | /**
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74 | @brief the vertex program to be used in the caustic gathering passes
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75 | */
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76 | String causticVertexProgram;
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77 | /**
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78 | @brief the fragment program to be used in the caustic gathering passes
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79 |
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80 | It should have one pass and the caustic cubemap of a caster will be bound to the first sampler unit.
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81 | */
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82 | String causticFragmentProgram;
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83 | /**
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84 | @breif new passes created by this technique
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85 | */
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86 | std::vector<Pass*> passes;
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87 | /**
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88 | @brief the nearest caustic casters found during update
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89 | */
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90 | std::vector<OgreSharedRuns*> causticCasters;
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91 | /**
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92 | @brief source blend factor of the new passes
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93 | */
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94 | SceneBlendFactor passBlendingSRC;
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95 | /**
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96 | @brief destination blend factor of the new passes
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97 | */
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98 | SceneBlendFactor passBlendingDEST;
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99 | bool createNewPasses;
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100 | int startTextureUnitID;
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101 | String casterCenterVariableName;
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102 | String attenuationVariableName;
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103 | };
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104 |
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105 | /**
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106 | @brief RenderTechniqueFactory to create OgreCausticReceiverRenderTechnique instances.
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107 | */
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108 | class OgreCausticReceiverRenderTechniqueFactory : public RenderTechniqueFactory
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109 | {
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110 | public:
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111 |
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112 | OgreCausticReceiverRenderTechniqueFactory();
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113 |
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114 | OgreRenderTechnique* createInstance(IllumTechniqueParams* params,
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115 | Pass* pass,
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116 | OgreRenderable* parentRenderable,
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117 | OgreTechniqueGroup* parentTechniqueGroup);
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118 |
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119 | virtual bool needMaterialCopy(IllumTechniqueParams* params){return true;}
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120 |
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121 | int maxcasters;
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122 | String causticVertexProgram;
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123 | String causticFragmentProgram;
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124 | SceneBlendFactor passBlendingSRC;
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125 | SceneBlendFactor passBlendingDEST;
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126 | bool createNewPasses;
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127 | int startTextureUnitID;
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128 | String casterCenterVariableName;
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129 | String attenuationVariableName;
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130 | };
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131 |
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