226 lines
5 KiB
C
Executable file
226 lines
5 KiB
C
Executable file
#include "gr.h"
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#include "grdef.h"
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#include "palette.h"
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#include <ddraw.h>
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//added on 7/11/99 by adb to fix palette problem
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#undef min
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static __inline int min(int x, int y) { return x < y ? x : y; }
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//end additions - adb
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static int last_r=0, last_g=0, last_b=0;
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extern void Win32_DoSetPalette(PALETTEENTRY *rgpe);
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extern void Win32_DoGetPalette(PALETTEENTRY *rgpe);
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extern void Win32_MakePalVisible(void);
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void gr_palette_step_up( int r, int g, int b )
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{
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int i;
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ubyte *p;
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int temp;
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PALETTEENTRY pe[256];
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if (gr_palette_faded_out) return;
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if ( (r==last_r) && (g==last_g) && (b==last_b) ) return;
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last_r = r;
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last_g = g;
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last_b = b;
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p=gr_palette;
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for (i=0; i<256; i++)
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{
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temp = (int)(*p++) + r;
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if (temp<0) temp=0;
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else if (temp>63) temp=63;
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pe[i].peRed = min(temp + gr_palette_gamma, 63) * 4;
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temp = (int)(*p++) + g;
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if (temp<0) temp=0;
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else if (temp>63) temp=63;
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pe[i].peGreen = min(temp + gr_palette_gamma, 63) * 4 ;
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temp = (int)(*p++) + b;
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if (temp<0) temp=0;
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else if (temp>63) temp=63;
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pe[i].peBlue = min(temp + gr_palette_gamma, 63) * 4;
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pe[i].peFlags = 0;
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}
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Win32_DoSetPalette (pe);
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}
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void gr_palette_clear()
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{
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int i;
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PALETTEENTRY pe[256];
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for (i=0;i<256;i++)
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{
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pe[i].peRed=pe[i].peGreen=pe[i].peBlue=pe[i].peFlags=0;
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}
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Win32_DoSetPalette (pe);
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gr_palette_faded_out = 1;
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}
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void gr_palette_load( ubyte *pal )
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{
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int i, j;
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PALETTEENTRY pe[256];
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for (i=0; i<768; i++ ) {
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//gr_current_pal[i] = pal[i] + gr_palette_gamma;
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//if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
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gr_current_pal[i] = pal[i];
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}
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for (i=0,j=0;j<256;j++)
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{
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pe[j].peRed = min(gr_current_pal[i++] + gr_palette_gamma, 63) * 4;
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pe[j].peGreen= min(gr_current_pal[i++] + gr_palette_gamma, 63) * 4;
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pe[j].peBlue = min(gr_current_pal[i++] + gr_palette_gamma, 63) * 4;
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pe[j].peFlags = 0;
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}
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Win32_DoSetPalette (pe);
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gr_palette_faded_out = 0;
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init_computed_colors();
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}
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int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys )
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{
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int i,j,k;
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fix fade_palette[768];
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fix fade_palette_delta[768];
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PALETTEENTRY pe[256];
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allow_keys = allow_keys;
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if (gr_palette_faded_out) return 0;
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if (pal==NULL) pal=gr_current_pal;
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for (i=0; i<768; i++ )
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{
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gr_current_pal[i] = pal[i];
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fade_palette[i] = i2f(pal[i]);
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fade_palette_delta[i] = fade_palette[i] / nsteps;
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}
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for (j=0; j<nsteps; j++ )
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{
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for (i=0, k = 0; k < 256; k++)
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{
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fade_palette[i] -= fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peRed = min(f2i(fade_palette[i]), 63) * 4;
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i++;
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fade_palette[i] -= fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peGreen = min(f2i(fade_palette[i]), 63) * 4;
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i++;
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fade_palette[i] -= fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peBlue = min(f2i(fade_palette[i]), 63) * 4;
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pe[k].peFlags = 0;
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i++;
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}
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Win32_DoSetPalette (pe);
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Win32_MakePalVisible ();
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}
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gr_palette_faded_out = 1;
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return 0;
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}
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int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
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{
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int i,j, k;
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// ubyte c;
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fix fade_palette[768];
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fix fade_palette_delta[768];
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PALETTEENTRY pe[256];
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allow_keys = allow_keys;
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if (!gr_palette_faded_out) return 0;
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if (pal==NULL) pal=gr_current_pal;
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for (i=0; i<768; i++ ) {
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gr_current_pal[i] = pal[i];
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fade_palette[i] = 0;
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fade_palette_delta[i] = i2f(pal[i]) / nsteps;
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}
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for (j=0; j<nsteps; j++ ) {
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for (i=0, k = 0; k<256; k++ ) {
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fade_palette[i] += fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peRed = min(f2i(fade_palette[i]), 63) * 4;
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i++;
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fade_palette[i] += fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peGreen = min(f2i(fade_palette[i]), 63) * 4;
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i++;
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fade_palette[i] += fade_palette_delta[i];
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if (fade_palette[i] < 0 )
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fade_palette[i] = 0;
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if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
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fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
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pe[k].peBlue = min(f2i(fade_palette[i]), 63) * 4;
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pe[k].peFlags = 0;
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i++;
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}
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Win32_DoSetPalette (pe);
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//added on 7/11/99 by adb to allow fade in on non-palette displays
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Win32_MakePalVisible ();
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//end additions - adb
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}
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gr_palette_faded_out = 0;
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return 0;
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}
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void gr_palette_read(ubyte * pal)
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{
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int i;
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// char c;
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PALETTEENTRY rgpe [256];
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Win32_DoGetPalette (rgpe);
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for (i = 0; i < 256; i++)
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{
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*pal++ = (rgpe[i].peRed) / 4;
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*pal++ = (rgpe[i].peGreen) / 4;
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*pal++ = (rgpe[i].peBlue) / 4;
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}
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}
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