gl_rmisc.c

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// gl_rmisc.c

#include "quakedef.h"

#ifdef MACOSX
extern qboolean gl_palettedtex;
#endif /* MACOSX */




/*
==================
R_InitTextures
==================
*/
void	R_InitTextures (void)
{
	int		x,y, m;
	byte	*dest;

// create a simple checkerboard texture for the default
	r_notexture_mip = Hunk_AllocName (sizeof(texture_t) + 16*16+8*8+4*4+2*2, "notexture");

	r_notexture_mip->width = r_notexture_mip->height = 16;
	r_notexture_mip->offsets[0] = sizeof(texture_t);
	r_notexture_mip->offsets[1] = r_notexture_mip->offsets[0] + 16*16;
	r_notexture_mip->offsets[2] = r_notexture_mip->offsets[1] + 8*8;
	r_notexture_mip->offsets[3] = r_notexture_mip->offsets[2] + 4*4;

	for (m=0 ; m<4 ; m++)
	{
		dest = (byte *)r_notexture_mip + r_notexture_mip->offsets[m];
		for (y=0 ; y< (16>>m) ; y++)
			for (x=0 ; x< (16>>m) ; x++)
			{
				if (  (y< (8>>m) ) ^ (x< (8>>m) ) )
					*dest++ = 0;
				else
					*dest++ = 0xff;
			}
	}
}

byte	dottexture[8][8] =
{
	{0,1,1,0,0,0,0,0},
	{1,1,1,1,0,0,0,0},
	{1,1,1,1,0,0,0,0},
	{0,1,1,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
};
void R_InitParticleTexture (void)
{
	int		x,y;
	byte	data[8][8][4];

	//
	// particle texture
	//
	particletexture = texture_extension_number++;
    GL_Bind(particletexture);

	for (x=0 ; x<8 ; x++)
	{
		for (y=0 ; y<8 ; y++)
		{
			data[y][x][0] = 255;
			data[y][x][1] = 255;
			data[y][x][2] = 255;
			data[y][x][3] = dottexture[x][y]*255;
		}
	}
#ifdef MACOSX_TEXRAM_CHECK
        GL_CheckTextureRAM (GL_TEXTURE_2D, 0, gl_alpha_format, 8, 8, 0, 0, GL_RGBA, GL_UNSIGNED_BYTE);
#endif /* MACOSX */
	glTexImage2D (GL_TEXTURE_2D, 0, gl_alpha_format, 8, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);

	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}

/*
====================
R_SetClearColor_f -- johnfitz
====================
*/
void R_SetClearColor_f (void)
{
	byte	*rgb;
	int		s;
	extern cvar_t r_clearcolor;

	s = (int)r_clearcolor.value & 0xFF;
	rgb = (byte*)(d_8to24table + s);
	glClearColor (rgb[0]/255.0,rgb[1]/255.0,rgb[2]/255.0,0);
}

/*
===============
R_Envmap_f

Grab six views for environment mapping tests
===============
*/
void R_Envmap_f (void)
{
// Baker: this really foobars DX8QUAKE
// Tried it in d3d8quake
#if !defined(DX8QUAKE_GL_READPIXELS_NO_RGBA)
	byte	buffer[256*256*4];
	int		x,y, width, height;

	glDrawBuffer  (GL_FRONT);
	glReadBuffer  (GL_FRONT);
	envmap = true;

	// Baker: store them
	x = r_refdef.vrect.x;
	y = r_refdef.vrect.y;
	width = r_refdef.vrect.width;
	height = r_refdef.vrect.height;

	r_refdef.vrect.x = 0;
	r_refdef.vrect.y = 0;
	r_refdef.vrect.width = 256;
	r_refdef.vrect.height = 256;

	r_refdef.viewangles[0] = 0;
	r_refdef.viewangles[1] = 0;
	r_refdef.viewangles[2] = 0;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env0.rgb", buffer, sizeof(buffer));

	r_refdef.viewangles[1] = 90;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env1.rgb", buffer, sizeof(buffer));

	r_refdef.viewangles[1] = 180;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env2.rgb", buffer, sizeof(buffer));

	r_refdef.viewangles[1] = 270;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env3.rgb", buffer, sizeof(buffer));

	r_refdef.viewangles[0] = -90;
	r_refdef.viewangles[1] = 0;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env4.rgb", buffer, sizeof(buffer));

	r_refdef.viewangles[0] = 90;
	r_refdef.viewangles[1] = 0;
	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
	R_RenderView ();
	glReadPixels (0, 0, 256, 256, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
	COM_WriteFile ("env5.rgb", buffer, sizeof(buffer));

	envmap = false;
	glDrawBuffer  (GL_BACK);
	glReadBuffer  (GL_BACK);

	// Baker: restore them
	r_refdef.vrect.x = x;
	r_refdef.vrect.y = y;
	r_refdef.vrect.width = width;
	r_refdef.vrect.height = height;

	GL_EndRendering ();
#else
	Con_Printf("Envmap command not supported\n");
#endif
}


/*
===============
R_TranslatePlayerSkin

Translates a skin texture by the per-player color lookup
===============
*/

#ifdef MACOSX
static unsigned int	pixels[512*256];
#endif /* MACOSX */

void R_TranslatePlayerSkin (int playernum)
{
	int			top, bottom, i, j, size;
	byte		translate[256];
	unsigned	translate32[256];
	model_t		*model;
	aliashdr_t 	*paliashdr;
	byte		*original;
#if !defined(MACOSX)
	unsigned	pixels[512*256];
#endif // Baker: play with this and remove this discrepancy
        unsigned	*out;
	unsigned	scaled_width, scaled_height;
	int		inwidth, inheight;
	byte		*inrow;
	unsigned	frac, fracstep;

	GL_DisableMultitexture();

	top = cl.scores[playernum].colors & 0xf0;
	bottom = (cl.scores[playernum].colors &15)<<4;

	for (i=0 ; i<256 ; i++)
		translate[i] = i;

	for (i=0 ; i<16 ; i++)
	{
		// the artists made some backwards ranges. sigh.
		translate[TOP_RANGE+i] = (top < 128) ? top + i : top + 15 - i;
		translate[BOTTOM_RANGE+i] = (bottom < 128) ? bottom + i : bottom + 15 - i;
	}

	// locate the original skin pixels
	currententity = &cl_entities[1+playernum];
	if (!(model = currententity->model))
		return;		// player doesn't have a model yet
	if (model->type != mod_alias)
		return; // only translate skins on alias models

	paliashdr = (aliashdr_t *)Mod_Extradata (model);
	size = paliashdr->skinwidth * paliashdr->skinheight;
	if (currententity->skinnum < 0 || currententity->skinnum >= paliashdr->numskins) {
		Con_Printf("(%d): Invalid player skin #%d\n", playernum, currententity->skinnum);
		original = (byte *)paliashdr + paliashdr->texels[0];
	} else {
		original = (byte *)paliashdr + paliashdr->texels[currententity->skinnum];
	}

	if (size & 3)
		Sys_Error ("R_TranslatePlayerSkin: bad size (%d)", size);

	inwidth = paliashdr->skinwidth;
	inheight = paliashdr->skinheight;

	// because this happens during gameplay, do it fast
	// instead of sending it through gl_upload 8
    GL_Bind(playertextures + playernum);

#if 0
	byte	translated[320*200];

	for (i=0 ; i<s ; i+=4)
	{
		translated[i] = translate[original[i]];
		translated[i+1] = translate[original[i+1]];
		translated[i+2] = translate[original[i+2]];
		translated[i+3] = translate[original[i+3]];
	}


	// don't mipmap these, because it takes too long
	GL_Upload8 (translated, paliashdr->skinwidth, paliashdr->skinheight, false, false, true);
#else
#ifdef DX8QUAKE_GET_GL_MAX_SIZE
	scaled_width = gl_max_size < 512 ? gl_max_size : 512;
	scaled_height = gl_max_size < 256 ? gl_max_size : 256;
#else
	scaled_width = gl_max_size.value < 512 ? gl_max_size.value : 512;
	scaled_height = gl_max_size.value < 256 ? gl_max_size.value : 256;
#endif

	// allow users to crunch sizes down even more if they want
	scaled_width >>= (int)gl_playermip.value;
	scaled_height >>= (int)gl_playermip.value;

#if !defined(DX8QUAKE_NO_8BIT)
	if (VID_Is8bit()
#ifdef MACOSX
            && gl_palettedtex
#endif /* MACOSX */
        ) { // 8bit texture upload
		byte *out2;

		out2 = (byte *)pixels;
		memset(pixels, 0, sizeof(pixels));
		fracstep = inwidth*0x10000/scaled_width;
		for (i=0 ; i<scaled_height ; i++, out2 += scaled_width)
		{
			inrow = original + inwidth*(i*inheight/scaled_height);
			frac = fracstep >> 1;
			for (j=0 ; j<scaled_width ; j+=4)
			{
				out2[j] = translate[inrow[frac>>16]];
				frac += fracstep;
				out2[j+1] = translate[inrow[frac>>16]];
				frac += fracstep;
				out2[j+2] = translate[inrow[frac>>16]];
				frac += fracstep;
				out2[j+3] = translate[inrow[frac>>16]];
				frac += fracstep;
			}
		}

		GL_Upload8_EXT ((byte *)pixels, scaled_width, scaled_height, TEX_NOFLAGS);
		return;
	}
#endif

	for (i=0 ; i<256 ; i++)
		translate32[i] = d_8to24table[translate[i]];

	out = pixels;
	fracstep = inwidth*0x10000/scaled_width;
	for (i=0 ; i<scaled_height ; i++, out += scaled_width)
	{
		inrow = original + inwidth*(i*inheight/scaled_height);
		frac = fracstep >> 1;
		for (j=0 ; j<scaled_width ; j+=4)
		{
			out[j] = translate32[inrow[frac>>16]];
			frac += fracstep;
			out[j+1] = translate32[inrow[frac>>16]];
			frac += fracstep;
			out[j+2] = translate32[inrow[frac>>16]];
			frac += fracstep;
			out[j+3] = translate32[inrow[frac>>16]];
			frac += fracstep;
		}
	}
#ifdef MACOSX_TEXRAM_CHECK
        GL_CheckTextureRAM (GL_TEXTURE_2D, 0, gl_solid_format, scaled_width, scaled_height, 0, 0, GL_RGBA, GL_UNSIGNED_BYTE);
#endif /* MACOSX */
	glTexImage2D (GL_TEXTURE_2D, 0, gl_solid_format, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);

	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
#endif

}

#ifdef D3DQ_WORKAROUND
void d3dEvictTextures();
#endif

/*
===============
R_NewMap
===============
*/
extern msurface_t  *skychain, *waterchain;
void R_NewMap (void)
{
	int		i;

#ifdef D3DQ_WORKAROUND
	d3dEvictTextures();
#endif

	for (i=0 ; i<256 ; i++)
		d_lightstylevalue[i] = 264;		// normal light value

	memset (&r_worldentity, 0, sizeof(r_worldentity));
	r_worldentity.model = cl.worldmodel;

// clear out efrags in case the level hasn't been reloaded
// FIXME: is this one short?
	for (i=0 ; i<cl.worldmodel->numleafs ; i++)
		cl.worldmodel->leafs[i].efrags = NULL;

	r_viewleaf = NULL;
	R_ClearParticles ();

	GL_BuildLightmaps ();

	// identify sky texture
	skytexturenum = -1;
	mirrortexturenum = -1;
	skychain = waterchain = NULL;

	for (i=0 ; i<cl.worldmodel->numtextures ; i++)
	{
		if (!cl.worldmodel->textures[i])
			continue;
		if (!strncmp(cl.worldmodel->textures[i]->name,"sky",3) )
			skytexturenum = i;
		if (!strncmp(cl.worldmodel->textures[i]->name,"window02_1",10) )
			mirrortexturenum = i;
 		cl.worldmodel->textures[i]->texturechain = NULL;
	}

	R_Sky_NewMap ();
}


/*
====================
R_TimeRefresh_f

For program optimization
====================
*/
#ifdef INTEL_OPENGL_DRIVER_WORKAROUND
extern qboolean IntelDisplayAdapter;
#endif
void R_TimeRefresh_f (void)
{
	int		i;
	float		start, stop, time;

	if (cls.state != ca_connected)
		return;

#ifdef INTEL_OPENGL_DRIVER_WORKAROUND
	if (!IntelDisplayAdapter) // Baker: ruins screen
#endif
		glDrawBuffer  (GL_FRONT);
	glFinish ();

	start = Sys_DoubleTime ();
	for (i=0 ; i<128 ; i++)
	{
		r_refdef.viewangles[1] = i * (360.0 / 128.0);
		R_RenderView ();
	}

	glFinish ();
	stop = Sys_DoubleTime ();
	time = stop-start;
	Con_Printf ("%f seconds (%f fps)\n", time, 128.0/time);

	glDrawBuffer  (GL_BACK);
	GL_EndRendering ();
}

void D_FlushCaches (void)
{
}