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[Git][freetype/freetype][gsoc-anurag-2022] Invert bitmap pitch

From: Anurag Thakur (@AdbhutDev)
Subject: [Git][freetype/freetype][gsoc-anurag-2022] Invert bitmap pitch
Date: Sun, 11 Sep 2022 12:57:47 +0000

Anurag Thakur pushed to branch gsoc-anurag-2022 at FreeType / FreeType

Commits:

  • b0854aaf
    by Anurag Thakur at 2022-09-11T18:27:10+05:30 
    Invert bitmap pitch

1 changed file:

Changes:

  • src/dense/ftdense.c
    ... ... @@ -65,13 +65,6 @@ swap( long int* a, long int* b )
    65 65 
       *b            = temp;
    66 66 
     }
    67 67
    68 
    -void
    69 
    -swapold( unsigned char* a, unsigned char* b )
    70 
    -{
    71 
    -  unsigned char temp = *a;
    72 
    -  *a                 = *b;
    73 
    -  *b                 = temp;
    74 
    -}
    75 68
    76 69 
     void
    77 70 
     dense_render_line( dense_worker* worker, TPos to_x, TPos to_y )
    ... ... @@ -437,17 +430,6 @@ dense_render_glyph( dense_worker* worker, const FT_Bitmap* target )
    437 430 
         dest++;
    438 431 
       }
    439 432
    440 
    -  for ( int col = 0; col < worker->m_w; col++ )
    441 
    -  {
    442 
    -    for ( int row = 0; row < worker->m_h / 2; row++ )
    443 
    -    {
    444 
    -      // printf("Swapping position: %d, %d with %d, %d with rows = %d, cols =
    445 
    -      // %d",row,col, worker->m_h-row, col, worker->m_h, worker->m_w);
    446 
    -      swapold( target->buffer + worker->m_w * row + col,
    447 
    -               target->buffer + ( worker->m_h - row - 1 ) * worker->m_w + col );
    448 
    -    }
    449 
    -  }
    450 
    -
    451 433 
       free(worker->m_a);
    452 434 
       return error;
    453 435 
     }
    ... ... @@ -456,7 +438,7 @@ static int
    456 438 
     dense_raster_render( FT_Raster raster, const FT_Raster_Params* params )
    457 439 
     {
    458 440 
       const FT_Outline* outline    = (const FT_Outline*)params->source;
    459 
    -  const FT_Bitmap*  target_map = params->target;
    441 
    +  FT_Bitmap*  target_map = params->target;
    460 442
    461 443 
       // dense_worker* worker = malloc( sizeof( dense_worker ) );
    462 444 
       dense_worker worker[1];
    ... ... @@ -495,6 +477,10 @@ dense_raster_render( FT_Raster raster, const FT_Raster_Params* params )
    495 477 
       {
    496 478 
         return 0;
    497 479 
       }
    480 
    +
    481 
    +  // Invert the pitch to account for different +ve y-axis direction in dense array
    482 
    +  // (maybe temporary solution)
    483 
    +  target_map->pitch *= -1;
    498 484 
       return dense_render_glyph( worker, target_map );
    499 485 
     }
    500 486

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