advancedLightingFeaturesGLSL.h

Engine/source/lighting/advanced/glsl/advancedLightingFeaturesGLSL.h

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Detailed Description

  1
  2//-----------------------------------------------------------------------------
  3// Copyright (c) 2012 GarageGames, LLC
  4//
  5// Permission is hereby granted, free of charge, to any person obtaining a copy
  6// of this software and associated documentation files (the "Software"), to
  7// deal in the Software without restriction, including without limitation the
  8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  9// sell copies of the Software, and to permit persons to whom the Software is
 10// furnished to do so, subject to the following conditions:
 11//
 12// The above copyright notice and this permission notice shall be included in
 13// all copies or substantial portions of the Software.
 14//
 15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 21// IN THE SOFTWARE.
 22//-----------------------------------------------------------------------------
 23
 24#ifndef _DEFERREDFEATURESGLSL_H_
 25#define _DEFERREDFEATURESGLSL_H_
 26
 27#include "shaderGen/GLSL/shaderFeatureGLSL.h"
 28#include "shaderGen/GLSL/bumpGLSL.h"
 29#include "shaderGen/GLSL/pixSpecularGLSL.h"
 30
 31class ConditionerMethodDependency;
 32
 33
 34/// Lights the pixel by sampling from the light prepass 
 35/// buffer.  It will fall back to forward lighting 
 36/// functionality for non-deferred rendered surfaces.
 37///
 38/// Also note that this feature is only used in the
 39/// forward rendering pass.  It is not used during the
 40/// prepass step.
 41///
 42class DeferredRTLightingFeatGLSL : public RTLightingFeatGLSL
 43{
 44   typedef RTLightingFeatGLSL Parent;
 45
 46protected:
 47
 48   /// @see DeferredRTLightingFeatHLSL::processPix()
 49   U32 mLastTexIndex;
 50
 51public:
 52
 53   virtual void processVert( Vector<ShaderComponent*> &componentList,
 54                              const MaterialFeatureData &fd );
 55
 56   virtual void processPix(   Vector<ShaderComponent*> &componentList, 
 57                              const MaterialFeatureData &fd );
 58
 59   virtual void processPixMacros(   Vector<GFXShaderMacro> &macros, 
 60                                    const MaterialFeatureData &fd );
 61
 62   virtual Material::BlendOp getBlendOp(){ return Material::None; }
 63
 64   virtual Resources getResources( const MaterialFeatureData &fd );
 65
 66   virtual void setTexData(   Material::StageData &stageDat,
 67                              const MaterialFeatureData &fd,
 68                              RenderPassData &passData,
 69                              U32 &texIndex );
 70
 71   virtual String getName()
 72   {
 73      return "Deferred RT Lighting";
 74   }
 75};
 76
 77
 78/// This is used during the 
 79class DeferredBumpFeatGLSL : public BumpFeatGLSL
 80{
 81   typedef BumpFeatGLSL Parent;
 82
 83public:
 84   virtual void processVert(  Vector<ShaderComponent*> &componentList,
 85                              const MaterialFeatureData &fd );
 86
 87   virtual void processPix(   Vector<ShaderComponent*> &componentList, 
 88                              const MaterialFeatureData &fd );
 89
 90   virtual Material::BlendOp getBlendOp() { return Material::LerpAlpha; }
 91
 92   virtual Resources getResources( const MaterialFeatureData &fd );
 93
 94   virtual void setTexData(   Material::StageData &stageDat,
 95                              const MaterialFeatureData &fd,
 96                              RenderPassData &passData,
 97                              U32 &texIndex );
 98
 99   virtual String getName()
100   {
101      return "Bumpmap [Deferred]";
102   }
103};
104
105
106/// Generates specular highlights in the forward pass 
107/// from the light prepass buffer.
108class DeferredPixelSpecularGLSL : public PixelSpecularGLSL
109{
110   typedef PixelSpecularGLSL Parent;
111
112public:
113   virtual void processVert(  Vector<ShaderComponent*> &componentList,
114                              const MaterialFeatureData &fd );
115
116   virtual void processPix(   Vector<ShaderComponent*> &componentList, 
117                              const MaterialFeatureData &fd );
118
119   virtual Resources getResources( const MaterialFeatureData &fd );
120
121   virtual String getName()
122   {
123      return "Pixel Specular [Deferred]";
124   }
125};
126
127
128///
129class DeferredMinnaertGLSL : public ShaderFeatureGLSL
130{
131   typedef ShaderFeatureGLSL Parent;
132   
133public:
134   virtual void processPix(   Vector<ShaderComponent*> &componentList, 
135                              const MaterialFeatureData &fd );
136   virtual void processVert(  Vector<ShaderComponent*> &componentList,
137                              const MaterialFeatureData &fd );
138
139   virtual void processPixMacros(   Vector<GFXShaderMacro> &macros, 
140                                    const MaterialFeatureData &fd );
141
142   virtual Resources getResources( const MaterialFeatureData &fd );
143
144   virtual void setTexData(   Material::StageData &stageDat,
145                              const MaterialFeatureData &fd,
146                              RenderPassData &passData,
147                              U32 &texIndex );
148
149   virtual String getName()
150   {
151      return "Minnaert Shading [Deferred]";
152   }
153};
154
155
156///
157class DeferredSubSurfaceGLSL : public ShaderFeatureGLSL
158{
159   typedef ShaderFeatureGLSL Parent;
160
161public:
162   virtual void processPix(   Vector<ShaderComponent*> &componentList, 
163                              const MaterialFeatureData &fd );
164
165   virtual String getName()
166   {
167      return "Sub-Surface Approximation [Deferred]";
168   }
169};
170
171#endif // _DEFERREDFEATURESGLSL_H_
172