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    u32 row_h = display->h-1-row;
  60
  61    for( int i=0; i<display->w; i++ )
  62    {
  63       if( end )
  64       {
  65          display->buffer[display->w*row_h + i] = 0.0f;
  66       }
  67       else
  68       {
  69          if( !str[i] )
  70             end = 1;
  71
  72          display->buffer[display->w*row_h + i] = sfd_encode_glyph( str[i] );
  73       }
  74    }
  75 }
  76
  77 static void sfd_new( struct sfd_instance *display, u32 w, u32 h )
  78 {
  79    display->w = w;
  80    display->h = h;
  81    display->buffer = vg_alloc( w*h*sizeof(float)*2 );
  82
  83    for( int i=0; i<w*h*2; i++ )
  84       display->buffer[i] = 0.0f;
  85 }
  86
  87 static void sfd_update( struct sfd_instance *display )
  88 {
  89    for( int i=0; i<display->w*display->h; i++ )
  90    {
  91       float *target = &display->buffer[i],
  92             *cur = target+display->w*display->h;
  93
  94       float const rate = vg.time_delta * 15.2313131414f;
  95       float d1 = *target-*cur;
  96
  97       if( fabsf(d1) > rate )
  98       {
  99          *cur += rate;
 100          if( *cur > 60.0f )
 101             *cur -= 60.0f;
 102       }
 103       else
 104          *cur = *target;
 105    }
 106 }
 107
 108 static void sfd_render( struct sfd_instance *display,
 109                         m4x4f projection, v3f camera, m4x3f transform )
 110 {
 111    struct subworld_sfd *sfd = &world.sfd;
 112    scene_bind( &sfd->mesh );
 113
 114    shader_scoretext_use();
 115    shader_scoretext_uTexGarbage(0);
 116    shader_scoretext_uTexGradients(1);
 117    shader_link_standard_ub( _shader_scoretext.id, 2 );
 118    bind_terrain_textures();
 119    vg_tex2d_bind( &tex_scoretext, 1 );
 120
 121    shader_scoretext_uPv( projection );
 122    shader_scoretext_uMdl( transform );
 123    shader_scoretext_uCamera( camera );
 124
 125    for( int y=0;y<display->h; y++ )
 126    {
 127       for( int x=0; x<display->w; x++ )
 128       {
 129          float value = display->buffer[display->h*display->w+y*display->w+x];
 130          shader_scoretext_uInfo( (v3f){ x,y, value } );
 131          scene_draw( &sfd->mesh );
 132       }
 133    }
 134
 135    shader_vblend_use();
 136    shader_vblend_uTexGarbage(0);
 137    shader_vblend_uTexGradients(1);
 138    shader_link_standard_ub( _shader_vblend.id, 2 );
 139    bind_terrain_textures();
 140
 141    shader_vblend_uPv( projection );
 142    shader_vblend_uMdl( transform );
 143    shader_vblend_uCamera( camera );
 144
 145    mesh_bind( &sfd->temp );
 146    mesh_draw( &sfd->temp );
 147 }
 148
 149 static int world_sfd_test( int argc, const char *argv[] )
 150 {
 151    struct subworld_sfd *sfd = &world.sfd;
 152
 153    if( argc == 2 )
 154    {
 155       int row = vg_min(vg_max(atoi(argv[0]),0),sfd->tester.h);
 156       sfd_encode( &sfd->tester, row, argv[1] );
 157    }
 158
 159    return 0;
 160 }
 161
 162 static void world_sfd_init(void)
 163 {
 164    vg_info( "world_sfd_init\n" );
 165    shader_scoretext_register();
 166
 167    struct subworld_sfd *sfd = &world.sfd;
 168
 169         vg_function_push( (struct vg_cmd){
 170                 .name = "sfd",
 171                 .function = world_sfd_test
 172         });
 173
 174    mdl_header *mboard = mdl_load( "models/rs_scoretext.mdl" );
 175    scene_init( &sfd->mesh );
 176
 177    mdl_node *pn_backer = mdl_node_from_name( mboard, "backer" );
 178    mdl_submesh *backer = mdl_submesh_from_id( mboard, pn_backer->submesh_start);
 179    mdl_node *pn_card = mdl_node_from_name( mboard, "score_card" );
 180    mdl_submesh *card = mdl_submesh_from_id( mboard, pn_card->submesh_start );
 181
 182    m4x3f identity;
 183    m4x3_identity( identity );
 184
 185    for( int i=4;i<6;i++ )
 186    {
 187       u32 vert_start = sfd->mesh.vertex_count;
 188       scene_add_submesh( &sfd->mesh, mboard, card, identity );
 189
 190       for( int j=0; j<card->vertex_count; j++ )
 191       {
 192          mdl_vert *vert = &sfd->mesh.verts[ vert_start+j ];
 193
 194          float const k_glyph_uvw = 1.0f/64.0f;
 195          vert->uv[0] -= k_glyph_uvw * (float)(i-4);
 196          vert->colour[0] = 0.0f;
 197          vert->colour[1] = i*36;
 198       }
 199    }
 200
 201    vg_acquire_thread_sync();
 202    {
 203       vg_tex2d_init( (vg_tex2d *[]){ &tex_scoretext }, 1 );
 204
 205       scene_upload( &sfd->mesh );
 206       mdl_unpack_submesh( mboard, &sfd->temp, backer );
 207    }
 208    vg_release_thread_sync();
 209
 210    scene_free_offline_buffers( &sfd->mesh );
 211    sfd_new( &sfd->tester, 27, 13 );
 212    vg_free( mboard );
 213 }
 214
 215
 216 static void world_sfd_free(void *_)
 217 {
 218    mesh_free( &world.sfd.mesh.mesh );
 219    vg_tex2d_free( (vg_tex2d *[]){ &tex_scoretext }, 1 );
 220 }
 221
 222 #endif /* SFD_H */