world_sfd.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef SFD_H
   6 #define SFD_H
   7
   8 #include "world.h"
   9
  10 #include "shaders/scoretext.h"
  11 #include "shaders/vblend.h"
  12
  13 vg_tex2d tex_scoretext = { .path = "textures/scoretext.qoi",
  14                            .flags = VG_TEXTURE_CLAMP|VG_TEXTURE_NEAREST };
  15
  16 /*
  17  * TODO: utf-8 -> ascii
  18  */
  19
  20 float sfd_encode_glyph( char c )
  21 {
  22    int value = 0;
  23    if( c >= 'a' && c <= 'z' )
  24       value = c-'a'+11;
  25    else if( c >= '0' && c <= '9' )
  26       value = c-'0'+1;
  27    else if( c >= 'A' && c <= 'Z' )
  28       value = c-'A'+11;
  29    else if( c >= '\x01' && c <= '\x01'+10 )
  30       value = 63-c;
  31    else
  32    {
  33       int base = 11+26;
  34
  35       switch( c )
  36       {
  37          case '!': value=base+0; break;
  38          case '?': value=base+1; break;
  39          case ',': value=base+2; break;
  40          case '.': value=base+3; break;
  41          case '#': value=base+4; break;
  42          case '$': value=base+5; break;
  43          case '%': value=base+6; break;
  44          case '*': value=base+7; break;
  45          case '+': value=base+8; break;
  46          case '-': value=base+9; break;
  47          case '/': value=base+10; break;
  48          case ':': value=base+11; break;
  49          default: value=0; break;
  50       }
  51    }
  52
  53    return (float)value;
  54 }
  55
  56 static void sfd_encode( struct sfd_instance *display, u32 row, const char *str )
  57 {
  58    int end=0;
  59    for( int i=0; i<display->w; i++ )
  60    {
  61       if( end )
  62       {
  63          display->buffer[display->w*row + i] = 0.0f;
  64       }
  65       else
  66       {
  67          if( !str[i] )
  68             end = 1;
  69
  70          display->buffer[display->w*row + i] = sfd_encode_glyph( str[i] );
  71       }
  72    }
  73 }
  74
  75 static void sfd_new( struct sfd_instance *display, u32 w, u32 h )
  76 {
  77    display->w = w;
  78    display->h = h;
  79    display->buffer = vg_alloc( w*h*sizeof(float)*2 );
  80
  81    for( int i=0; i<w*h*2; i++ )
  82       display->buffer[i] = 0.0f;
  83 }
  84
  85 static void sfd_update( struct sfd_instance *display )
  86 {
  87    for( int i=0; i<display->w*display->h; i++ )
  88    {
  89       float *target = &display->buffer[i],
  90             *cur = target+display->w*display->h;
  91
  92       float const rate = vg.time_delta * 15.2313131414f;
  93       float d1 = *target-*cur;
  94
  95       if( fabsf(d1) > rate )
  96       {
  97          *cur += rate;
  98          if( *cur > 60.0f )
  99             *cur -= 60.0f;
 100       }
 101       else
 102          *cur = *target;
 103    }
 104 }
 105
 106 static void sfd_render( struct sfd_instance *display,
 107                         m4x4f projection, v3f camera, m4x3f transform )
 108 {
 109    struct subworld_sfd *sfd = &world.sfd;
 110    scene_bind( &sfd->mesh );
 111
 112    shader_scoretext_use();
 113    shader_scoretext_uTexGarbage(0);
 114    shader_scoretext_uTexGradients(1);
 115    shader_link_standard_ub( _shader_scoretext.id, 2 );
 116    bind_terrain_textures();
 117    vg_tex2d_bind( &tex_scoretext, 1 );
 118
 119    shader_scoretext_uPv( projection );
 120    shader_scoretext_uMdl( transform );
 121    shader_scoretext_uCamera( camera );
 122
 123    for( int y=0;y<display->h; y++ )
 124    {
 125       for( int x=0; x<display->w; x++ )
 126       {
 127          float value = display->buffer[display->h*display->w+y*display->w+x];
 128          shader_scoretext_uInfo( (v3f){ x,y, value } );
 129          scene_draw( &sfd->mesh );
 130       }
 131    }
 132
 133    shader_vblend_use();
 134    shader_vblend_uTexGarbage(0);
 135    shader_vblend_uTexGradients(1);
 136    shader_link_standard_ub( _shader_vblend.id, 2 );
 137    bind_terrain_textures();
 138
 139    shader_vblend_uPv( projection );
 140    shader_vblend_uMdl( transform );
 141    shader_vblend_uCamera( camera );
 142
 143    mesh_bind( &sfd->temp );
 144    mesh_draw( &sfd->temp );
 145 }
 146
 147 static int world_sfd_test( int argc, const char *argv[] )
 148 {
 149    struct subworld_sfd *sfd = &world.sfd;
 150
 151    if( argc == 2 )
 152    {
 153       int row = vg_min(vg_max(atoi(argv[0]),0),sfd->tester.h);
 154       sfd_encode( &sfd->tester, row, argv[1] );
 155    }
 156
 157    return 0;
 158 }
 159
 160 static void world_sfd_init(void)
 161 {
 162    vg_info( "world_sfd_init\n" );
 163    shader_scoretext_register();
 164
 165    struct subworld_sfd *sfd = &world.sfd;
 166
 167         vg_function_push( (struct vg_cmd){
 168                 .name = "sfd",
 169                 .function = world_sfd_test
 170         });
 171
 172    mdl_header *mboard = mdl_load( "models/rs_scoretext.mdl" );
 173    scene_init( &sfd->mesh );
 174
 175    mdl_node *pn_backer = mdl_node_from_name( mboard, "backer" );
 176    mdl_submesh *backer = mdl_submesh_from_id( mboard, pn_backer->submesh_start);
 177    mdl_node *pn_card = mdl_node_from_name( mboard, "score_card" );
 178    mdl_submesh *card = mdl_submesh_from_id( mboard, pn_card->submesh_start );
 179
 180    m4x3f identity;
 181    m4x3_identity( identity );
 182
 183    for( int i=4;i<6;i++ )
 184    {
 185       u32 vert_start = sfd->mesh.vertex_count;
 186       scene_add_submesh( &sfd->mesh, mboard, card, identity );
 187
 188       for( int j=0; j<card->vertex_count; j++ )
 189       {
 190          mdl_vert *vert = &sfd->mesh.verts[ vert_start+j ];
 191
 192          float const k_glyph_uvw = 1.0f/64.0f;
 193          vert->uv[0] -= k_glyph_uvw * (float)(i-4);
 194          vert->colour[0] = 0.0f;
 195          vert->colour[1] = i*36;
 196       }
 197    }
 198
 199    vg_acquire_thread_sync();
 200    {
 201       vg_tex2d_init( (vg_tex2d *[]){ &tex_scoretext }, 1 );
 202
 203       scene_upload( &sfd->mesh );
 204       mdl_unpack_submesh( mboard, &sfd->temp, backer );
 205    }
 206    vg_release_thread_sync();
 207
 208    scene_free_offline_buffers( &sfd->mesh );
 209    sfd_new( &sfd->tester, 27, 13 );
 210    vg_free( mboard );
 211 }
 212
 213
 214 static void world_sfd_free(void *_)
 215 {
 216    mesh_free( &world.sfd.mesh.mesh );
 217    vg_tex2d_free( (vg_tex2d *[]){ &tex_scoretext }, 1 );
 218 }
 219
 220 #endif /* SFD_H */