diguyDx9GraphicsShaderProgram.h

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/****************************************************************************
 * Copyright (c) 2024 MAK Technologies, Inc.
 * All rights reserved.
 ****************************************************************************/

/*********************************************************************
 **
 *2  diguyDx9GraphicsShaderProgram
 **
 **    This class is part of the DI-Guy Graphics API.  It overrides the class
 **    diguyGraphicsShaderProgram.  Detailed documentation is in the
 **    implementation file documentation
 **    <a href="diguyDx9GraphicsShaderProgram.cpp.html">here</a>.
 */

#ifndef diguyDx9GraphicsShaderProgram_h__
#define diguyDx9GraphicsShaderProgram_h__

class diguyGraphicsLink;

#include <diguyGraphicsShaderProgram.h>
#include <dx9_headers.h>

struct ID3DXEffect;


/****************************************************************************/
class diguyDx9GraphicsShaderProgram : public diguyGraphicsShaderProgram
{

public:

   diguyDx9GraphicsShaderProgram(void* internal_data);
   ~diguyDx9GraphicsShaderProgram();

   virtual int load_vertex_shader_source(const char* filename_base);
   virtual int load_pixel_shader_source(const char* filename_base);
   virtual int reload();
   virtual int link();

   virtual int bind();
   virtual int unbind();


   virtual int bind_link_matrices(int num_mats,
      const float* mat_data);
   virtual int bind_color_array(int num_colors,
      const float* color_data);
   virtual void set_apply_matrices_flag(int apply_matrices_flag);

protected:

   int load_and_compile_shader(
      const char* shader_filename,
      bool& shader_loaded);

   char* load_shader_source(const char* shader_filename);
   void  free_shader_source(char* source_source);

   LPD3DXBUFFER m_vertex_code;
   LPDIRECT3DVERTEXSHADER9 m_vertex_shader;
   char m_vertex_shader_filename[512];
   bool m_vertex_shader_loaded;

   LPD3DXBUFFER m_pixel_code;
   LPDIRECT3DPIXELSHADER9 m_pixel_shader;
   char m_pixel_shader_filename[512];
   bool m_pixel_shader_loaded;

   bool m_linked;
};


diguyGraphicsShaderProgram* diguyDx9GraphicsShaderProgram_create_func(void* internal_data);

#endif /* diguyDx9GraphicsShaderProgram_h__ */