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hardware gamma support. I don't know how well it works (hard to tell on my

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test box), but it doesn't crash :)
This commit is contained in:
Bill Currie 2001-10-20 20:59:55 +00:00
parent 0fad122bc3
commit 1afaefd9dc
1 changed files with 37 additions and 3 deletions
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40
source/vid_wgl.c
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@ -52,6 +52,10 @@
void GL_Common_Init_Cvars (void);
void CheckMultiTextureExtensions (void);
void VID_Init8bitPalette (void);
void VID_BuildGammaTable (double);
void VID_GetSystemGamma (void);
void VID_RestoreSystemGamma (void);
extern void (*vid_menudrawfn) (void);
extern void (*vid_menukeyfn) (int);
@ -104,6 +108,7 @@ qboolean DDActive;
// If you ever merge screen/gl_screen, don't forget this one
qboolean scr_skipupdate;
static unsigned short system_gamma_ramp[3][256];
static vmode_t modelist[MAX_MODE_LIST];
static int nummodes;
static vmode_t badmode;
@ -555,11 +560,12 @@ VID_Shutdown (void)
int i, temp[8192];
#ifdef SPLASH_SCREEN
if(hwnd_dialog)
DestroyWindow (hwnd_dialog);
if(hwnd_dialog)
DestroyWindow (hwnd_dialog);
#endif
if (vid_initialized) {
VID_RestoreSystemGamma ();
vid_canalttab = false;
hRC = wglGetCurrentContext ();
hDC = wglGetCurrentDC ();
@ -1422,6 +1428,8 @@ VID_Init (unsigned char *palette)
DestroyWindow (hwnd_dialog);
#endif
VID_GetSystemGamma ();
GL_Common_Init_Cvars ();
VID_InitGamma (palette);
VID_SetPalette (palette);
@ -1602,5 +1610,31 @@ VID_SetCaption (char *text)
qboolean
VID_SetGamma (double gamma)
{
return false; //FIXME
int i;
unsigned short ramps[3][256];
HDC hdc = GetDC (NULL);
VID_BuildGammaTable (gamma);
for (i = 0; i < 255; i++) {
ramps[0][i] = ramps[1][i] = ramps[2][i] = gammatable[i] << 16;
}
i = SetDeviceGammaRamp(hdc, ramps);
ReleaseDC (NULL, hdc);
return i;
}
void
VID_GetSystemGamma (void)
{
HDC hdc = GetDC (NULL);
GetDeviceGammaRamp(hdc, &system_gamma_ramp[0][0]);
ReleaseDC (NULL, hdc);
}
void
VID_RestoreSystemGamma (void)
{
HDC hdc = GetDC (NULL);
SetDeviceGammaRamp(hdc, &system_gamma_ramp[0][0]);
ReleaseDC (NULL, hdc);
}