+++ /dev/null
-// Copyright (C) 2021 Harry Godden (hgn) - All Rights Reserved
-
-#define VG_TOOLS
-#include "vg/vg.h"
-
-#define STB_IMAGE_IMPLEMENTATION
-#include "stb/stb_image.h"
-
-struct image_src
-{
- int x,y,ch;
-
- u8 *data;
-};
-
-int image_sort( const void* a, const void* b)
-{
- struct image_src *p_a = (struct image_src *)a;
- struct image_src *p_b = (struct image_src *)b;
-
- if( p_a->x == p_b->x )
- return 0;
- else if ( p_a->x < p_b->x )
- return 1;
- else
- return -1;
-}
-
-int main( int argc, const char *argv[] )
-{
- struct image_src *source_images = malloc( sizeof( struct image_src ) * argc );
-
- u32 num_images = 0;
-
- if( argc < 4 )
- {
- vg_error( "Missing output file paths\n" );
- return 0;
- }
-
- // Open header handle
- // ------------------
- FILE *fp = fopen( argv[2], "w" );
- if( !fp )
- {
- vg_error( "Could not open file for writing\n" );
- return 0;
- }
-
- fprintf( fp, "enum %s_index\n{\n", argv[3] );
-
- // Load images
- // -----------
- stbi_set_flip_vertically_on_load(1);
-
- for( int i = 4; i < argc; i ++ )
- {
- struct image_src *src = &source_images[ num_images ];
- src->data = (u8 *)stbi_load( argv[i], &src->x, &src->y, &src->ch, 4 );
-
- char name[ 256 ];
- int j = 0; int ext = 0;
- for( ; j < vg_list_size( name )-1; j ++ )
- {
- if( argv[i][j] )
- {
- name[j] = argv[i][j];
-
- if( name[j] == '.' )
- ext = j;
-
- if( name[j] == '.' || name[j] == '-' )
- name[j] = '_';
- }
- else
- break;
- }
-
- if( ext )
- name[ext] = 0x00;
- else
- name[j] = 0x00;
-
- fprintf( fp, "\tk_sprite_%s,\n", name );
-
- if( src->data )
- {
- if( src->x != src->y )
- {
- vg_error( "Non-square images are currently not supported ('%s')\n", argv[i] );
- free( src->data );
- }
- else
- num_images ++;
- }
- else
- vg_error( "Could not decode '%s'\n", argv[i] );
- }
-
- fprintf( fp, "};\n\n" );
-
- // Sort by size
- // ------------
- qsort( source_images, num_images, sizeof(struct image_src), image_sort );
-
- // Process images
- // --------------
- fprintf( fp, "static struct vg_sprite %s[] = \n{\n", argv[3] );
-
- u8 *dest = (u8 *)malloc( 1024*1024*4 );
-
- for( int i = 0; i < 1024*1024; i ++ )
- {
- dest[ i*4 + 0 ] = 0;
- dest[ i*4 + 1 ] = 0;
- dest[ i*4 + 2 ] = 0;
- dest[ i*4 + 3 ] = 0;
- }
-
- struct region
- {
- v2i p0;
- v2i p1;
- }
- region_stack[ 32 ] =
- {
- {
- .p0 = { 0, 0 },
- .p1 = { 1024, 1024 }
- }
- };
- int stack_h = 0;
-
- for( int i = 0; i < num_images; i ++ )
- {
- struct image_src *psrc = &source_images[ i ];
-
- // Region checks
- while( 1 )
- {
- struct region *pregion = ®ion_stack[ stack_h ];
-
- if( (pregion->p0[ 0 ] + psrc->x <= pregion->p1[0]) && (pregion->p0[ 1 ] + psrc->y <= pregion->p1[1]) )
- {
- // Passed, add image and create subdivisions
- fprintf( fp, "\t{{ %f, %f, %f, %f }}",
- (float)pregion->p0[0] / 1024.0f,
- (float)pregion->p0[1] / 1024.0f,
- (float)psrc->x / 1024.0f,
- (float)psrc->y / 1024.0f
- );
-
- if( i != num_images-1 )
- fputs( ",\n", fp );
- else
- fputc( '\n', fp );
-
- // Write image
- for( int y = 0; y < psrc->y; y ++ )
- {
- int px = pregion->p0[0];
- int py = pregion->p0[1] + y;
-
- memcpy( &dest[ (py*1024+px) * 4 ], &psrc->data[ y*psrc->x*4 ], psrc->x*4 );
- }
-
- // Subdivisions
- stack_h ++;
- struct region *new_region = ®ion_stack[ stack_h ];
-
- new_region->p0[0] = pregion->p0[0] + psrc->x;
- new_region->p0[1] = pregion->p0[1];
- new_region->p1[0] = pregion->p1[0];
- new_region->p1[1] = pregion->p0[1] + psrc->y;
-
- pregion->p0[ 1 ] += psrc->y;
- break;
- }
- else
- {
- // Failed, loop up to next region if can
- if( stack_h == 0 )
- {
- vg_error( "Could not fit image %d. Pack failed\n", i );
-
- goto IL_END_ERR;
- }
- else
- stack_h --;
- }
- }
- }
-
-IL_END_ERR:
- fprintf( fp, "};" );
- fclose( fp );
-
- // Write output
- // ------------
- qoi_write( argv[1], dest, &(qoi_desc){
- .width = 1024,
- .height = 1024,
- .channels = 4,
- .colorspace = QOI_SRGB
- });
-
- // Free
- // ----
- for( int i = 0; i < num_images; i ++ )
- free( source_images[ i ].data );
- free( dest );
- free( source_images );
-
- vg_success( "Processed %u images\n", num_images );
-
-}