gl_vidnt.c

来自「quake1 dos源代码最新版本」· C语言 代码 · 共 1,980 行 · 第 1/4 页

}


//====================================

BINDTEXFUNCPTR bindTexFunc;

#define TEXTURE_EXT_STRING "GL_EXT_texture_object"


void CheckTextureExtensions (void)
{
	char		*tmp;
	qboolean	texture_ext;
	HINSTANCE	hInstGL;

	texture_ext = FALSE;
	/* check for texture extension */
	tmp = (unsigned char *)glGetString(GL_EXTENSIONS);
	while (*tmp)
	{
		if (strncmp((const char*)tmp, TEXTURE_EXT_STRING, strlen(TEXTURE_EXT_STRING)) == 0)
			texture_ext = TRUE;
		tmp++;
	}

	if (!texture_ext || COM_CheckParm ("-gl11") )
	{
		hInstGL = LoadLibrary("opengl32.dll");

		if (hInstGL == NULL)
			Sys_Error ("Couldn't load opengl32.dll\n");

		bindTexFunc = (void *)GetProcAddress(hInstGL,"glBindTexture");

		if (!bindTexFunc)
			Sys_Error ("No texture objects!");
		return;
	}

/* load library and get procedure adresses for texture extension API */
	if ((bindTexFunc = (BINDTEXFUNCPTR)
		wglGetProcAddress((LPCSTR) "glBindTextureEXT")) == NULL)
	{
		Sys_Error ("GetProcAddress for BindTextureEXT failed");
		return;
	}
}

void CheckArrayExtensions (void)
{
	char		*tmp;

	/* check for texture extension */
	tmp = (unsigned char *)glGetString(GL_EXTENSIONS);
	while (*tmp)
	{
		if (strncmp((const char*)tmp, "GL_EXT_vertex_array", strlen("GL_EXT_vertex_array")) == 0)
		{
			if (
((glArrayElementEXT = wglGetProcAddress("glArrayElementEXT")) == NULL) ||
((glColorPointerEXT = wglGetProcAddress("glColorPointerEXT")) == NULL) ||
((glTexCoordPointerEXT = wglGetProcAddress("glTexCoordPointerEXT")) == NULL) ||
((glVertexPointerEXT = wglGetProcAddress("glVertexPointerEXT")) == NULL) )
			{
				Sys_Error ("GetProcAddress for vertex extension failed");
				return;
			}
			return;
		}
		tmp++;
	}

	Sys_Error ("Vertex array extension not present");
}

//int		texture_mode = GL_NEAREST;
//int		texture_mode = GL_NEAREST_MIPMAP_NEAREST;
//int		texture_mode = GL_NEAREST_MIPMAP_LINEAR;
int		texture_mode = GL_LINEAR;
//int		texture_mode = GL_LINEAR_MIPMAP_NEAREST;
//int		texture_mode = GL_LINEAR_MIPMAP_LINEAR;

int		texture_extension_number = 1;

#ifdef _WIN32
void CheckMultiTextureExtensions(void)
{
	if (strstr(gl_extensions, "GL_SGIS_multitexture ") && !COM_CheckParm("-nomtex")) {
		Con_Printf("Multitexture extensions found.\n");
		qglMTexCoord2fSGIS = (void *) wglGetProcAddress("glMTexCoord2fSGIS");
		qglSelectTextureSGIS = (void *) wglGetProcAddress("glSelectTextureSGIS");
		gl_mtexable = true;
	}
}
#else
void CheckMultiTextureExtensions(void)
{
		gl_mtexable = true;
}
#endif

/*
===============
GL_Init
===============
*/
void GL_Init (void)
{
	gl_vendor = glGetString (GL_VENDOR);
	Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
	gl_renderer = glGetString (GL_RENDERER);
	Con_Printf ("GL_RENDERER: %s\n", gl_renderer);

	gl_version = glGetString (GL_VERSION);
	Con_Printf ("GL_VERSION: %s\n", gl_version);
	gl_extensions = glGetString (GL_EXTENSIONS);
	Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);

//	Con_Printf ("%s %s\n", gl_renderer, gl_version);

	if (strnicmp(gl_renderer,"PowerVR",7)==0)
		fullsbardraw = true;

	if (strnicmp(gl_renderer,"Permedia",8)==0)
		isPermedia = true;

	CheckTextureExtensions ();
	CheckMultiTextureExtensions ();

	glClearColor (1,0,0,0);
	glCullFace(GL_FRONT);
	glEnable(GL_TEXTURE_2D);

	glEnable(GL_ALPHA_TEST);
	glAlphaFunc(GL_GREATER, 0.666);

	glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
	glShadeModel (GL_FLAT);

	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);

	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

//	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

#if 0
	CheckArrayExtensions ();

	glEnable (GL_VERTEX_ARRAY_EXT);
	glEnable (GL_TEXTURE_COORD_ARRAY_EXT);
	glVertexPointerEXT (3, GL_FLOAT, 0, 0, &glv.x);
	glTexCoordPointerEXT (2, GL_FLOAT, 0, 0, &glv.s);
	glColorPointerEXT (3, GL_FLOAT, 0, 0, &glv.r);
#endif
}

/*
=================
GL_BeginRendering

=================
*/
void GL_BeginRendering (int *x, int *y, int *width, int *height)
{
	extern cvar_t	*gl_clear;

	*x = *y = 0;
	*width = WindowRect.right - WindowRect.left;
	*height = WindowRect.bottom - WindowRect.top;

//	if (!wglMakeCurrent( maindc, baseRC ))
//		Sys_Error ("wglMakeCurrent failed");

//	glViewport (*x, *y, *width, *height);
}


void GL_EndRendering (void)
{
	if (!scr_skipupdate || block_drawing)
		SwapBuffers(maindc);

// handle the mouse state when windowed if that's changed
	if (modestate == MS_WINDOWED)
	{
		if (!_windowed_mouse->value) {
			if (windowed_mouse)	{
				IN_DeactivateMouse ();
				IN_ShowMouse ();
				windowed_mouse = false;
			}
		} else {
			windowed_mouse = true;
			if (key_dest == key_game && !mouseactive && ActiveApp) {
				IN_ActivateMouse ();
				IN_HideMouse ();
			} else if (mouseactive && key_dest != key_game) {
				IN_DeactivateMouse ();
				IN_ShowMouse ();
			}
		}
	}
	if (fullsbardraw)
		Sbar_Changed();
}

void	VID_SetPalette (unsigned char *palette)
{
	byte	*pal;
	unsigned r,g,b;
	unsigned v;
	int		r1,g1,b1;
	int		j,k,l,m;
	unsigned short i;
	unsigned	*table;
	FILE *f;
	char s[255];
	HWND hDlg, hProgress;
	float gamma;

//
// 8 8 8 encoding
//
	pal = palette;
	table = d_8to24table;
	for (i=0 ; i<256 ; i++)
	{
		r = pal[0];
		g = pal[1];
		b = pal[2];
		pal += 3;

//		v = (255<<24) + (r<<16) + (g<<8) + (b<<0);
//		v = (255<<0) + (r<<8) + (g<<16) + (b<<24);
		v = (255<<24) + (r<<0) + (g<<8) + (b<<16);
		*table++ = v;
	}
	d_8to24table[255] &= 0xffffff;	// 255 is transparent

	// JACK: 3D distance calcs - k is last closest, l is the distance.
	// FIXME: Precalculate this and cache to disk.
	for (i=0; i < (1<<15); i++) {
		/* Maps
			000000000000000
			000000000011111 = Red  = 0x1F
			000001111100000 = Blue = 0x03E0
			111110000000000 = Grn  = 0x7C00
		*/
		r = ((i & 0x1F) << 3)+4;
		g = ((i & 0x03E0) >> 2)+4;
		b = ((i & 0x7C00) >> 7)+4;
		pal = (unsigned char *)d_8to24table;
		for (v=0,k=0,l=10000*10000; v<256; v++,pal+=4) {
			r1 = r-pal[0];
			g1 = g-pal[1];
			b1 = b-pal[2];
			j = (r1*r1)+(g1*g1)+(b1*b1);
			if (j<l) {
				k=v;
				l=j;
			}
		}
		d_15to8table[i]=k;
	}
}

BOOL	gammaworks;

void	VID_ShiftPalette (unsigned char *palette)
{
	extern	byte ramps[3][256];

//	VID_SetPalette (palette);

//	gammaworks = SetDeviceGammaRamp (maindc, ramps);
}


void VID_SetDefaultMode (void)
{
	IN_DeactivateMouse ();
}


void	VID_Shutdown (void)
{
   	HGLRC hRC;
   	HDC	  hDC;

	if (vid_initialized)
	{
		vid_canalttab = false;
		hRC = wglGetCurrentContext();
		hDC = wglGetCurrentDC();

		wglMakeCurrent(NULL, NULL);

		if (hRC)
			wglDeleteContext(hRC);

		if (hDC && dibwindow)
			ReleaseDC(dibwindow, hDC);

		if (modestate == MS_FULLDIB)
			ChangeDisplaySettings (NULL, 0);

		if (maindc && dibwindow)
			ReleaseDC (dibwindow, maindc);

		AppActivate(false, false);
	}
}


//==========================================================================


BOOL bSetupPixelFormat(HDC hDC)
{
	static	PIXELFORMATDESCRIPTOR pfd = {
	sizeof(PIXELFORMATDESCRIPTOR),	// size of this pfd
	1,				// version number
	PFD_DRAW_TO_WINDOW 		// support window
	|  PFD_SUPPORT_OPENGL 	// support OpenGL
	|  PFD_DOUBLEBUFFER ,	// double buffered
	PFD_TYPE_RGBA,			// RGBA type
	24,				// 24-bit color depth
	0, 0, 0, 0, 0, 0,		// color bits ignored
	0,				// no alpha buffer
	0,				// shift bit ignored
	0,				// no accumulation buffer
	0, 0, 0, 0, 			// accum bits ignored
	32,				// 32-bit z-buffer
	0,				// no stencil buffer
	0,				// no auxiliary buffer
	PFD_MAIN_PLANE,			// main layer
	0,				// reserved
	0, 0, 0				// layer masks ignored
	};
	int	pixelformat;

	if ( (pixelformat = ChoosePixelFormat(hDC, &pfd)) == 0 )
	{
		MessageBox(NULL, "ChoosePixelFormat failed", "Error", MB_OK);
		return FALSE;
	}

	if (SetPixelFormat(hDC, pixelformat, &pfd) == FALSE)
	{
		MessageBox(NULL, "SetPixelFormat failed", "Error", MB_OK);
		return FALSE;
	}

	return TRUE;
}



byte	scantokey[128] =
{
//  0           1       2       3       4       5       6       7
//  8           9       A       B       C       D       E       F
	0  ,    27,     '1',    '2',    '3',    '4',    '5',    '6',
	'7',    '8',    '9',    '0',    '-',    '=',    K_BACKSPACE, 9, // 0
	'q',    'w',    'e',    'r',    't',    'y',    'u',    'i',
	'o',    'p',    '[',    ']',    13 ,    K_CTRL,'a',  's',      // 1
	'd',    'f',    'g',    'h',    'j',    'k',    'l',    ';',
	'\'' ,    '`',    K_SHIFT,'\\',  'z',    'x',    'c',    'v',      // 2
	'b',    'n',    'm',    ',',    '.',    '/',    K_SHIFT,'*',
	K_ALT,' ',   0  ,    K_F1, K_F2, K_F3, K_F4, K_F5,   // 3
	K_F6, K_F7, K_F8, K_F9, K_F10, K_PAUSE  ,    0  , K_HOME,
	K_UPARROW,K_PGUP,'-',K_LEFTARROW,'5',K_RIGHTARROW,'+',K_END, //4
	K_DOWNARROW,K_PGDN,K_INS,K_DEL,0,0,             0,              K_F11,
	K_F12,0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 5
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 6
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0         // 7
};

byte	shiftscantokey[128] =
{
//  0           1       2       3       4       5       6       7
//  8           9       A       B       C       D       E       F
	0  ,    27,     '!',    '@',    '#',    '$',    '%',    '^',
	'&',    '*',    '(',    ')',    '_',    '+',    K_BACKSPACE, 9, // 0
	'Q',    'W',    'E',    'R',    'T',    'Y',    'U',    'I',
	'O',    'P',    '{',    '}',    13 ,    K_CTRL,'A',  'S',      // 1
	'D',    'F',    'G',    'H',    'J',    'K',    'L',    ':',
	'"' ,    '~',    K_SHIFT,'|',  'Z',    'X',    'C',    'V',      // 2
	'B',    'N',    'M',    '<',    '>',    '?',    K_SHIFT,'*',
	K_ALT,' ',   0  ,    K_F1, K_F2, K_F3, K_F4, K_F5,   // 3
	K_F6, K_F7, K_F8, K_F9, K_F10, K_PAUSE  ,    0  , K_HOME,
	K_UPARROW,K_PGUP,'_',K_LEFTARROW,'%',K_RIGHTARROW,'+',K_END, //4
	K_DOWNARROW,K_PGDN,K_INS,K_DEL,0,0,             0,              K_F11,
	K_F12,0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 5
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,        // 6
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0,
	0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0  ,    0         // 7
};


/*
=======
MapKey

Map from windows to quake keynums
=======
*/
int MapKey (int key)
{
	key = (key>>16)&255;
	if (key > 127)
		return 0;
	if (scantokey[key] == 0)
		Con_DPrintf("key 0x%02x has no translation\n", key);
	return scantokey[key];
}

/*
===================================================================

MAIN WINDOW

===================================================================
*/

/*
================
ClearAllStates
================
*/
void ClearAllStates (void)
{
	int		i;

// send an up event for each key, to make sure the server clears them all
	for (i=0 ; i<256 ; i++)
	{
		Key_Event (i, false);
	}

	Key_ClearStates ();
	IN_ClearStates ();
}

void AppActivate(BOOL fActive, BOOL minimize)
/****************************************************************************
*
* Function:     AppActivate
* Parameters:   fActive - True if app is activating
*
* Description:  If the application is activating, then swap the system
*               into SYSPAL_NOSTATIC mode so that our palettes will display
*               correctly.
*
****************************************************************************/
{
	MSG		msg;
	HDC		hdc;
	int		i, t;
	static BOOL	sound_active;

	ActiveApp = fActive;
	Minimized = minimize;

// enable/disable sound on focus gain/loss
	if (!ActiveApp && sound_active)
	{
		S_BlockSound ();
		sound_active = false;
	}
	else if (ActiveApp && !sound_active)
	{
		S_UnblockSound ();
		sound_active = true;
	}

	if (fActive)
	{
		if (modestate == MS_FULLDIB)
		{
			IN_ActivateMouse ();
			IN_HideMouse ();
			if (vid_canalttab && vid_wassuspended) {
				vid_wassuspended = false;
				ChangeDisplaySettings (&gdevmode, CDS_FULLSCREEN);
				ShowWindow(mainwindow, SW_SHOWNORMAL);
			}