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-3dfx brightness +setrom tdfx_brighten #, 2 with gamma 2 is nice

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This commit is contained in:
Chris Ison 2001-06-02 10:43:38 +00:00
parent 4826c5dd0f
commit 903482c923
1 changed files with 26 additions and 0 deletions
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26
libs/video/targets/vid_3dfxsvga.c
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@ -63,6 +63,7 @@
typedef void (GLAPIENTRY * QF_3DfxSetDitherModeEXT) (GrDitherMode_t mode);
cvar_t *vid_system_gamma;
cvar_t *tdfx_brighten;
static fxMesaContext fc = NULL;
@ -218,6 +219,27 @@ findres (int *width, int *height)
return GR_RESOLUTION_640x480;
}
void
TDFX_BrightenPalette (unsigned char *palette)
{
byte *pal;
int i;
float red, green, blue, maxnum, somenum;
pal = palette;
for (i = 0; i < 255; i++)
{
red = (float)pal[0];
green = (float)pal[1];
blue = (float)pal[2];
maxnum = max(red,max(green,blue));
somenum = (bound(0.0,(maxnum * tdfx_brighten->int_val),255.0) / maxnum);
pal[0] = (int)(somenum * red);
pal[1] = (int)(somenum * green);
pal[2] = (int)(somenum * blue);
pal += 3;
}
}
void
VID_Init (unsigned char *palette)
{
@ -278,6 +300,9 @@ VID_Init (unsigned char *palette)
GL_Init ();
if (tdfx_brighten->int_val)
TDFX_BrightenPalette(palette);
VID_InitGamma (palette);
VID_SetPalette (palette);
@ -295,6 +320,7 @@ void
VID_Init_Cvars (void)
{
vid_system_gamma = Cvar_Get ("vid_system_gamma", "1", CVAR_ARCHIVE, NULL, "Use system gamma control if available");
tdfx_brighten = Cvar_Get ("tdfx_brighten", "0", CVAR_ROM, NULL, "Brighten 3DFX palette");
}
void