/********************************************************************** <BR>
  This file is part of Crack dot Com's free source code release of
  Golgotha. <a href="http://www.crack.com/golgotha_release"> <BR> for
  information about compiling & licensing issues visit this URL</a> 
  <PRE> If that doesn't help, contact Jonathan Clark at 
  golgotha_source@usa.net (Subject should have "GOLG" in it) 
***********************************************************************/

#ifndef _R1_DX5_HH_
#define _R1_DX5_HH_

#include "r1_api.hh"
#include "r1_win.hh"
#include <ddraw.h>
#include <d3d.h>

class r1_dx5_render_window_class : public r1_render_window_class
{
public:  
  r1_dx5_render_window_class(w16 w, w16 h,
                             r1_expand_type expand_type,
                             r1_render_api_class *api);
 
  ~r1_dx5_render_window_class();

  void draw(i4_draw_context_class &context);
  
  I4_EVENT_NAME("dx5 render window");
};

class r1_dx5_class : public r1_render_api_class
{
  void copy_part(i4_image_class *im,                                          
                 int x, int y,             // position on screen
                 int x1, int y1,           // area of image to copy 
                 int x2, int y2);

public:

  friend inline void make_d3d_verts(D3DTLVERTEX *dx_v,r1_vert *r1_v,r1_dx5_class *c,int total);
  r1_dx5_class();
  ~r1_dx5_class();

  // returns false if display is not compatible with render_api, i.e. if you pass
  // the directx display to the glide render api it return false
  // init will create the texture manager, which can be used after this call
  // text_mem_size if size of buffer to hold compressed textures (in system memory)
  i4_bool init(i4_display_class *display);

  // this will delete the texture manager (and free textures associated with) created by init
  void uninit();
  
  void set_z_range(i4_float near_z, i4_float far_z);

   
  void set_filter_mode(r1_filter_type type);
  void set_alpha_mode(r1_alpha_type type);
  void set_write_mode(r1_write_mask_type mask);
  
  // draws the polygon at the end of the frame (during end_render())
  void render_poly(int t_verts, r1_vert *verts);
  void render_pixel(r1_vert *pixel);
  void render_lines(int t_lines, r1_vert *verts);
  void clear_area(int x1, int y1, int x2, int y2, w32 color, float w);
  
  // creates an image of the same bit depth and palette of screen (for use with put_image)
  i4_image_class *create_compatible_image(w16 w, w16 h);
  
    // texture handle is obtained from the texture manager, this is enables texture mapping
  void use_texture(r1_texture_handle material_ref, 
                   sw32 desired_width,
                   w32 frame);

  r1_alpha_type      pre_holy_alpha_mode;
  r1_write_mask_type pre_holy_write_mask;

  i4_bool states_have_changed;
  i4_bool holy_mode;
  i4_bool texture_mode;

  void enable_holy();
  void disable_holy();

  void flush_vert_buffer();

  // drawing will the constant color to render with if textures are disabled
  void disable_texture();

  r1_render_window_class *create_render_window(int visable_w, int visable_h,
                                               r1_expand_type type);

  i4_float x_off,y_off;

  i4_bool hardware_tmapping;
  i4_bool needs_square_textures;
  
  char    dd_driver_name[128];
  char    d3d_driver_name[128];      
  
  IDirectDrawSurface3 *zbuffer_surface;
  IDirect3D2          *d3d;
  IDirect3DDevice2    *d3d_device;
  IDirect3DViewport2  *d3d_viewport;
};

extern r1_dx5_class r1_dx5_class_instance;

#endif