GLTFTechnique.h

 /*
  * Copyright 2018-2021 ANSYS, Inc. Unauthorized use, distribution, or duplication is prohibited.
  * 
  * Restricted Rights Legend
  *
  * Use, duplication, or disclosure of this
  * software and its documentation by the
  * Government is subject to restrictions as
  * set forth in subdivision [(b)(3)(ii)] of
  * the Rights in Technical Data and Computer
  * Software clause at 52.227-7013.
  */
 #ifndef __INCLUDED_GLTF_GLTFTECHNIQUE__
 #define __INCLUDED_GLTF_GLTFTECHNIQUE__
  
 #include "GLTFCommon.h"
 #include "GLTFObject.h"
  
 namespace ANSYS { namespace Nexus { namespace GLTFWriter {
     class GLTF;
     class Program;
     class Value;
  
     class Parameter : public Object
     {
     public:
         enum ParameterType
         {
 //            PT_BYTE = 5120,
 //            PT_USIGNED_BYTE = 5121,
 //            PT_SHORT = 5122,
 //            PT_UNSIGNED_SHORT = 5123,
             PT_INT = 5124, 
 //            PT_UNSIGNED_INT = 5125,
             PT_FLOAT = 5126, 
             PT_FLOAT_VEC2 = 35664, 
             PT_FLOAT_VEC3 = 35665, 
             PT_FLOAT_VEC4 = 35666, 
             PT_INT_VEC2 = 35667, 
             PT_INT_VEC3 = 35668, 
             PT_INT_VEC4 = 35669, 
             PT_BOOL = 35670, 
 //            PT_BOOL_VEC2 = 35671,
 //            PT_BOOL_VEC3 = 35672,
 //            PT_BOOL_VEC4 = 35673,
 //            PT_FLOAT_MAT2 = 35674,
             PT_FLOAT_MAT3 = 35675, 
             PT_FLOAT_MAT4 = 35676, 
             PT_SAMPLER_2D = 35678 
     };
  
     protected:
         virtual ~Parameter() {}
  
     public:
         static GLTFWRITERSPEC Parameter *Create(GLTF *gltf, 
             const char *shaderName, 
             const char *externalName, 
             ParameterType type, 
             const Value *defaultValue = 0 
         );
         static GLTFWRITERSPEC Parameter *CreateModelViewMatrix(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateModelMatrix(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateViewMatrix(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateProjectionMatrix(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateNormalMatrix(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateViewport(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateTexture(GLTF *gltf, 
             const char *shaderName, 
             unsigned int num 
         );
         static GLTFWRITERSPEC Parameter *CreatePosition(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateColor(GLTF *gltf, 
             const char *shaderName, 
             ParameterType type 
         );
         static GLTFWRITERSPEC Parameter *CreatePointSize(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter* CreateDisplacementScale(GLTF* gltf, 
             const char* shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateNormal(GLTF *gltf, 
             const char *shaderName 
         );
         static GLTFWRITERSPEC Parameter *CreateTexCoord(GLTF *gltf, 
             const char *shaderName, 
             unsigned int num 
         );
     };
  
     class State : public Object
     {
     public:
         enum StateType
         {
             ST_UNKNOWN, 
 //                ST_BLENDCOLOR, // RED, //(0.0), 0.0 - 1.0
                                 // GREEN, //(0.0), 0.0 - 1.0
                                 // BLUE, //(0.0), 0.0 - 1.0
                                 // ALPHA, //(0.0), 0.0 - 1.0
             ST_BLENDENABLE, 
 //                ST_BLENDEQUATION, //(32774), FUNC_ADD(32774), FUNC_SUBTRACT(32778), FUNC_REVERSE_SUBTRACT(32779)
 //                ST_BLENDEQUATIONSEPARATE, // RGB, //(32774), FUNC_ADD(32774), FUNC_SUBTRACT(32778), FUNC_REVERSE_SUBTRACT(32779)
                                         // ALPHA, //(32774), FUNC_ADD(32774), FUNC_SUBTRACT(32778), FUNC_REVERSE_SUBTRACT(32779)
 //                ST_BLENDFUNC, // SFACTOR, //(1), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
                             // DFACTOR, //(0), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
 //                ST_BLENDFUNCSEPARATE, // SRCRGB, //(1), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
                                     // SRCALPHA, //(1), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
                                     // DSTRGB, //(0), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
                                     // DSTALPHA, //(0), ZERO(0), ONE(1), SRC_COLOR(768), ONE_MINUS_SOURCE_COLOR(769), DST_COLOR(774), ONE_MINUS_DST_COLOR(775), SRC_ALPHA(770), ONE_MINUS_SRC_ALPHA(771), DST_ALPHA(772), ONE_MINUS_DST_ALPHA(773), CONSANT_COLOR(32769), ONE_MINUS_CONSTANT_COLOR(32770), CONSTANT_ALPHA(32771), ONE_MINUS_CONSTANT_ALPHA(32772), SRC_ALPHA_SATURATE(776)
 //                ST_COLORMASK, // RED, //(1), FALSE(0), TRUE(1)
                             // GREEN, //(1), FALSE(0), TRUE(1)
                             // BLUE, //(1), FALSE(0), TRUE(1)
                             // ALPHA, //(1), FALSE(0), TRUE(1)
             ST_CULLFACE, 
             ST_CULLFACEENABLE, 
             ST_DEPTHFUNC, 
             ST_DEPTHMASK, 
 //                ST_DEPTHRANGE, // ZNEAR, //(0.0), 0.0 - 1.0
                                 // ZFAR, //(1.0), 0.0 - 1.0
             ST_DEPTHTESTENABLE, 
 //                ST_DITHERENABLE, //(1), FALSE(0), TRUE(1)
             ST_FRONTFACE, 
             ST_LINEWIDTH, 
 //                ST_POINTSIZE,
             ST_POLYGONOFFSET, 
             ST_POLYGONOFFSETFILLENABLE 
 //                ST_SAMPLEALPHATOCOVERAGEENABLE, //(0), FALSE(0), TRUE(0)
 //                ST_SAMPLECOVERAGE, // VALUE, //(1.0), 0.0 - 1.0
                                     // INVERT, //(0) FALSE(0), TRUE(1)
 //                ST_SAMPLECOVERAGEENABLE, //(0), FALSE(0), TRUE(1)   
 //                ST_SCISSOR, // X, //(0), > 0
                             // Y, //(0), > 0
                             // WIDTH, //(0), > 0
                             // HEIGHT, //(0), > 0
 //                ST_SCISSORTESTENABLE, //(0), FALSE(0), TRUE(1)
 //                ST_STENCILFUNC, // FUNC, //(519), NEVER(512), LESS(513), LEQUAL(515), EQUAL(514), GREATER(516), NOTEQUAL(517), GEQUAL(518), ALWAYS(519)
                                 // REF, //(0), 0 - 2^n-1 where n is number of bit planes in stencil buffer
                                 // MASK, //(0xFFFFFFFF), 0 - 0xFFFFFFFF
 //                ST_STENCILFUNCSEPARATE, // FACE, //(?), FRONT(1028), BACK(1029), FRONT_AND_BACK(1032)
                                         // FUNC, //(519), NEVER(512), LESS(513), LEQUAL(515), EQUAL(514), GREATER(516), NOTEQUAL(517), GEQUAL(518), ALWAYS(519)
                                         // REF, //(0), 0 - 2^n-1 where n is number of bit planes in stencil buffer
                                         // MASK, //(0xFFFFFFFF), 0 - 0xFFFFFFFF
 //                ST_STENCILMASK, //(0xFFFFFFFF), 0 - 0xFFFFFFFF
 //                ST_STENCILMASKSEPARATE, // FACE, //(?), FRONT(1028), BACK(1029), FRONT_AND_BACK(1032)
                                         // MASK, //(0xFFFFFFFF), 0 - 0xFFFFFFFF
 //                ST_STENCILOP, // SFAIL, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
                             // DPFAIL, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
                             // DPPASS, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
 //                ST_STENCILOPSEPARATE, // FACE, //(?), FRONT(1028), BACK(1029), FRONT_AND_BACK(1032)
                                     // SFAIL, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
                                     // DPFAIL, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
                                     // DPPASS, //(7680), KEEP(7680), ZERO(0), REPLACE(7681), INCR(7682), DECR(7683), INVERT(5386), INCR_WRAP(34055), DECR_WRAP(34056)
 //                ST_STENCILTESTENABLE //(0), FALSE(0), TRUE(1)
         };
  
     protected:
         virtual ~State() {}
  
     public:
         static GLTFWRITERSPEC State *Create(GLTF *gltf, 
             StateType type, 
             double v1, 
             double v2 = 0, 
             double v3 = 0, 
             double v4 = 0 
         );
     };
  
     class Technique : public Object
     {
     protected:
         virtual ~Technique() {}
  
     public:
         static GLTFWRITERSPEC Technique *Create(GLTF *gltf, 
             Program *program = 0, 
             bool is2D = false 
         );
  
         GLTFWRITERSPEC virtual Technique *Mirror() = 0;
         GLTFWRITERSPEC virtual bool AppendParameter(Parameter *parameter 
         ) = 0;
         GLTFWRITERSPEC virtual bool AppendState(State *state 
         ) = 0;
     };
  
 } } }
  
 #endif
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