53 lines
2.1 KiB
C#
53 lines
2.1 KiB
C#
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// Contains rendering functions for legacy TMS9918 modes.
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namespace BizHawk.Emulation.Consoles.Sega
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{
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public partial class VDP
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{
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private int[] PaletteTMS9918 = new int[]
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{
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unchecked((int)0x00000000),
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unchecked((int)0xFF000000),
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unchecked((int)0xFF47B73B),
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unchecked((int)0xFF7CCF6F),
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unchecked((int)0xFF5D4EFF),
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unchecked((int)0xFF8072FF),
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unchecked((int)0xFFB66247),
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unchecked((int)0xFF5DC8ED),
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unchecked((int)0xFFD76B48),
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unchecked((int)0xFFFB8F6C),
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unchecked((int)0xFFC3CD41),
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unchecked((int)0xFFD3DA76),
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unchecked((int)0xFF3E9F2F),
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unchecked((int)0xFFB664C7),
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unchecked((int)0xFFCCCCCC),
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unchecked((int)0xFFFFFFFF)
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};
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private void RenderBackgroundM0()
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{
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int yc = ScanLine/8;
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int yofs = ScanLine%8;
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int FrameBufferOffset = ScanLine*256;
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int PatternNameOffset = mystery_pn + (yc*32);
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for (int xc=0; xc<32; xc++)
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{
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int pn = VRAM[PatternNameOffset++];
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int pv = VRAM[PatternGeneratorBase + (pn*8) + yofs];
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int colorEntry = VRAM[ColorTableBase + (pn/8)];
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int fgColor = PaletteTMS9918[(colorEntry >> 4 & 0x0F)];
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int bgColor = PaletteTMS9918[(colorEntry & 0x0F)];
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x80) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x40) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x20) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x10) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x08) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x04) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x02) > 0) ? fgColor : bgColor;
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FrameBuffer[FrameBufferOffset++] = ((pv & 0x01) > 0) ? fgColor : bgColor;
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}
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}
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}
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}
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