115 lines
1.9 KiB
C
115 lines
1.9 KiB
C
#include <gint/defs/util.h>
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#include <gint/gray.h>
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#include "../render-fx/render-fx.h"
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/* grect(): Fill a rectangle on the screen */
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void grect(int x1, int y1, int x2, int y2, color_t color)
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{
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/* Use masks to get the work done fast! */
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uint32_t m[4];
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masks(x1, x2, m);
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uint32_t *light, *dark;
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dgray_getvram(&light, &dark);
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light += (y1 << 2);
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dark += (y1 << 2);
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int h = y2 - y1 + 1;
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if(color == C_WHITE) while(h--)
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{
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light[0] &= ~m[0];
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light[1] &= ~m[1];
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light[2] &= ~m[2];
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light[3] &= ~m[3];
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dark[0] &= ~m[0];
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dark[1] &= ~m[1];
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dark[2] &= ~m[2];
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dark[3] &= ~m[3];
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light += 4;
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dark += 4;
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}
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else if(color == C_LIGHT) while(h--)
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{
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light[0] |= m[0];
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light[1] |= m[1];
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light[2] |= m[2];
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light[3] |= m[3];
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dark[0] &= ~m[0];
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dark[1] &= ~m[1];
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dark[2] &= ~m[2];
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dark[3] &= ~m[3];
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light += 4;
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dark += 4;
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}
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else if(color == C_DARK) while(h--)
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{
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light[0] &= ~m[0];
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light[1] &= ~m[1];
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light[2] &= ~m[2];
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light[3] &= ~m[3];
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dark[0] |= m[0];
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dark[1] |= m[1];
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dark[2] |= m[2];
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dark[3] |= m[3];
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light += 4;
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dark += 4;
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}
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else if(color == C_BLACK) while(h--)
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{
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light[0] |= m[0];
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light[1] |= m[1];
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light[2] |= m[2];
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light[3] |= m[3];
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dark[0] |= m[0];
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dark[1] |= m[1];
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dark[2] |= m[2];
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dark[3] |= m[3];
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light += 4;
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dark += 4;
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}
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else if(color == C_INVERT) while(h--)
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{
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light[0] ^= m[0];
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light[1] ^= m[1];
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light[2] ^= m[2];
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light[3] ^= m[3];
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dark[0] ^= m[0];
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dark[1] ^= m[1];
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dark[2] ^= m[2];
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dark[3] ^= m[3];
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light += 4;
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dark += 4;
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}
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else if(color == C_LIGHTEN) for(int i = 0; i < (h << 2); i++)
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{
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int j = i & 3;
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uint32_t tmp = *dark, x = m[j];
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*dark &= *light | ~x;
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*light = (*light ^ x) & (tmp | ~x);
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light++, dark++;
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}
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else if(color == C_DARKEN) for(int i = 0; i < (h << 2); i++)
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{
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int j = i & 3;
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uint32_t tmp = *dark, x = m[j];
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*dark |= *light & x;
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*light = (*light ^ x) | (tmp & x);
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light++, dark++;
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}
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}
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