Bridgetek FT801 - Page 96

FT800 Series Programmer Guide
Version 2.1
Document Reference No.: BRT_000030 Clearance No.: BRT#037
96
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4X zoom - 128 X 128 - using a bitmap transform:
dl( BITMAP_SOURCE(0) );
dl( BITMAP_LAYOUT(RGB565, 128, 64) );
dl( BITMAP_TRANSFORM_A(128) );
dl( BITMAP_TRANSFORM_E(128) );
dl( BITMAP_SIZE(NEAREST, BORDER,
BORDER, 128, 128) );
dl( BEGIN(BITMAPS) );
dl( VERTEX2II(16, 0, 0, 0) );
Using a bilinear filter makes the zoomed image a little smoother:
dl( BITMAP_SOURCE(0) );
dl( BITMAP_LAYOUT(RGB565, 128, 64) );
dl( BITMAP_TRANSFORM_A(128) );
dl( BITMAP_TRANSFORM_E(128) );
dl( BITMAP_SIZE(BILINEAR, BORDER,
BORDER, 128, 128) );
dl( BEGIN(BITMAPS) );
dl( VERTEX2II(16, 0, 0, 0) );
Graphics context
None
See also
BITMAP_HANDLE, BITMAP_LAYOUT, BITMAP_SOURCE