shaders.h

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// Software Rendering Pipeline (SRP) library
// Licensed under GNU GPLv3
 
#pragma once
 
#include <stdbool.h>
#include "vertex.h"
 
typedef struct SRPUniform SRPUniform;
 
 
typedef struct SRPvsInput
{
    SRPUniform* uniform;  
    SRPVertex* pVertex;   
    size_t vertexID;      
} SRPvsInput;
 
typedef struct SRPvsOutput
{
    double position[4];                   
    SRPVertexVariable* pOutputVariables;  
} SRPvsOutput;
 
typedef struct SRPVertexShader
{
    void (*shader)(SRPvsInput* in, SRPvsOutput* out);
    size_t nOutputVariables;
    SRPVertexVariableInformation* outputVariablesInfo;
    size_t nBytesPerOutputVariables;
} SRPVertexShader;
 
 
typedef struct SRPfsInput
{
    SRPUniform* uniform;            
    SRPInterpolated* interpolated;  
    double fragCoord[4];            
    bool frontFacing;               
    size_t primitiveID;             
} SRPfsInput;
 
typedef struct SRPfsOutput
{
    double color[4];   
    double fragDepth;  
} SRPfsOutput;
 
typedef struct SRPFragmentShader
{
    void (*shader)(SRPfsInput* in, SRPfsOutput* out);  
} SRPFragmentShader;
 
 
typedef struct SRPShaderProgram
{
    SRPUniform* uniform;   
    SRPVertexShader* vs;    
    SRPFragmentShader* fs;  
} SRPShaderProgram;