29 lines
494 B
C
29 lines
494 B
C
#define GINT_NEED_VRAM
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#include <gint/display.h>
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#include <gint/defs/types.h>
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/* dpixel() - change a pixel's color */
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void dpixel(int x, int y, color_t color)
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{
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/* Sanity checks */
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if((uint)x >= 128 || (uint)y >= 64) return;
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uint32_t *lword = vram + (y << 2) + (x >> 5);
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uint32_t mask = 1 << (~x & 31);
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switch(color)
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{
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case color_white:
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*lword &= ~mask;
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break;
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case color_black:
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*lword |= mask;
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break;
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case color_reverse:
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*lword ^= mask;
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break;
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default:
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return;
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}
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}
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