diff options
Diffstat (limited to 'source/tile.cpp')
| -rw-r--r-- | source/tile.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/source/tile.cpp b/source/tile.cpp index 008ef33..4fb9de0 100644 --- a/source/tile.cpp +++ b/source/tile.cpp @@ -249,6 +249,37 @@ static void WRITE_4PIXELS_FLIPPED (uint32 Offset, uint8 *Pixels, uint16 *ScreenC } } } +static void WRITE_4PIXELS_HALFWIDTH (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) +{ + uint8 Pixel; + uint8 *Screen = GFX.S + Offset; + uint8 *Depth = GFX.DB + Offset; + + for (uint8 N = 0; N < 4; N += 2) + { + if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N])) + { + Screen [N >> 1] = (uint8) ScreenColors [Pixel]; + Depth [N >> 1] = GFX.Z2; + } + } +} + +static void WRITE_4PIXELS_FLIPPED_HALFWIDTH (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) +{ + uint8 Pixel; + uint8 *Screen = GFX.S + Offset; + uint8 *Depth = GFX.DB + Offset; + + for (uint8 N = 0; N < 4; N += 2) + { + if (GFX.Z1 > Depth [N] && (Pixel = Pixels[2 - N])) + { + Screen [N >> 1] = (uint8) ScreenColors [Pixel]; + Depth [N >> 1] = GFX.Z2; + } + } +} static void WRITE_4PIXELSx2 (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) { @@ -335,6 +366,27 @@ void DrawClippedTile (uint32 Tile, uint32 Offset, RENDER_CLIPPED_TILE(WRITE_4PIXELS, WRITE_4PIXELS_FLIPPED, 4) } +void DrawTileHalfWidth (uint32 Tile, uint32 Offset, uint32 StartLine, + uint32 LineCount) +{ + TILE_PREAMBLE + + register uint8 *bp; + + RENDER_TILE(WRITE_4PIXELS_HALFWIDTH, WRITE_4PIXELS_FLIPPED_HALFWIDTH, 2) +} + +void DrawClippedTileHalfWidth (uint32 Tile, uint32 Offset, + uint32 StartPixel, uint32 Width, + uint32 StartLine, uint32 LineCount) +{ + TILE_PREAMBLE + register uint8 *bp; + + TILE_CLIP_PREAMBLE + RENDER_CLIPPED_TILE(WRITE_4PIXELS_HALFWIDTH, WRITE_4PIXELS_FLIPPED_HALFWIDTH, 2) +} + void DrawTilex2 (uint32 Tile, uint32 Offset, uint32 StartLine, uint32 LineCount) { @@ -423,6 +475,38 @@ static void WRITE_4PIXELS16_FLIPPED (uint32 Offset, uint8 *Pixels, uint16 *Scree } } +static void WRITE_4PIXELS16_HALFWIDTH (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) +{ + uint8 Pixel; + uint16 *Screen = (uint16 *) GFX.S + Offset; + uint8 *Depth = GFX.DB + Offset; + + for (uint8 N = 0; N < 4; N += 2) + { + if (GFX.Z1 > Depth [N] && (Pixel = Pixels[N])) + { + Screen [N >> 1] = ScreenColors [Pixel]; + Depth [N >> 1] = GFX.Z2; + } + } +} + +static void WRITE_4PIXELS16_FLIPPED_HALFWIDTH (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) +{ + uint8 Pixel; + uint16 *Screen = (uint16 *) GFX.S + Offset; + uint8 *Depth = GFX.DB + Offset; + + for (uint8 N = 0; N < 4; N += 2) + { + if (GFX.Z1 > Depth [N] && (Pixel = Pixels[2 - N])) + { + Screen [N >> 1] = ScreenColors [Pixel]; + Depth [N >> 1] = GFX.Z2; + } + } +} + static void WRITE_4PIXELS16x2 (uint32 Offset, uint8 *Pixels, uint16 *ScreenColors) { uint8 Pixel; @@ -570,6 +654,26 @@ void DrawClippedTile16 (uint32 Tile, uint32 Offset, RENDER_CLIPPED_TILE(WRITE_4PIXELS16, WRITE_4PIXELS16_FLIPPED, 4) } +void DrawTile16HalfWidth (uint32 Tile, uint32 Offset, uint32 StartLine, + uint32 LineCount) +{ + TILE_PREAMBLE + register uint8 *bp; + + RENDER_TILE(WRITE_4PIXELS16_HALFWIDTH, WRITE_4PIXELS16_FLIPPED_HALFWIDTH, 2) +} + +void DrawClippedTile16HalfWidth (uint32 Tile, uint32 Offset, + uint32 StartPixel, uint32 Width, + uint32 StartLine, uint32 LineCount) +{ + TILE_PREAMBLE + register uint8 *bp; + + TILE_CLIP_PREAMBLE + RENDER_CLIPPED_TILE(WRITE_4PIXELS16_HALFWIDTH, WRITE_4PIXELS16_FLIPPED_HALFWIDTH, 2) +} + void DrawTile16x2 (uint32 Tile, uint32 Offset, uint32 StartLine, uint32 LineCount) { |