34 lines
1.3 KiB
C
34 lines
1.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ML_bmp_16_or_cl.c */
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/* | Project : libmonochrome */
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/* */
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/* By: Pierre "PierrotLL" Le Gall <legallpierre89@gmail.com> */
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/* Last updated: 2011/11/22 */
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/* */
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/* ************************************************************************** */
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#include <monochrome/internals.h>
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void ML_bmp_16_or_cl(const unsigned short *bmp, int x, int y)
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{
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unsigned long line;
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char i, shift, begin=0, end=16, bool1=1, bool2=1, bool3=1, *screen, *p=(char*)&line+1;
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if(!bmp || x<-15 || x>127 || y<-15 || y>63) return;
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if(y < 0) begin = -y;
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if(y > 48) end = 64-y;
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shift = 8-(x&7);
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if(x < 0) bool1 = 0;
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if(x<-8 || x>119) bool2 = 0;
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if(x>111 || shift==8) bool3 = 0;
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screen = ML_vram_adress()+(y+begin<<4)+(x>>3);
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for(i=begin ; i<end ; i++)
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{
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line = bmp[i]<<shift;
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if(bool1) screen[0] |= *p;
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if(bool2) screen[1] |= *(p+1);
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if(bool3) screen[2] |= *(p+2);
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screen += 16;
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}
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}
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