SKYBOXES!

Relevant cvar to change the name of the skybox is r_skyname which defaults
to "sky".  If you don't have the files you'll get an ugly red background
in place of the sky.  I'll fix that shortly.

Sorry software people, this is just the Q2 code I'm turning on which doesn
not work for software.  The code is pretty simple though and most of it's
written already in gl_warp.c---just move that to r_sky and use the pcx's
instead of the tga's..

common/gl_rmain.c

@@ -1080,7 +1080,12 @@ R_RenderView ( void ) {
 		glFogi (GL_FOG_MODE, GL_EXP2);
 		glFogfv (GL_FOG_COLOR, colors);
 		glFogf (GL_FOG_DENSITY, (GLfloat) r_fog->value); 
-		glEnable(GL_FOG);
+//		glFogi (GL_FOG_MODE, GL_LINEAR);
+//		glFogfv (GL_FOG_COLOR, colors);
+//		glFogf (GL_FOG_START, 300.0);
+//		glFogf (GL_FOG_END, 1500.0);
+//		glFogf (GL_FOG_DENSITY, 0.2);
+		glEnable (GL_FOG);
 
 		R_RenderScene ();
 	        R_DrawViewModel ();

common/gl_rmisc.c

@@ -601,9 +601,7 @@ void R_NewMap (void)
 			skytexturenum = i;
  		cl.worldmodel->textures[i]->texturechain = NULL;
 	}
-#ifdef QUAKE2
 	R_LoadSkys ();
-#endif
 }
 
 

common/gl_rsurf.c

@@ -1,4 +1,5 @@
 /*
+gl_rsurf.c - surrface-related refresh code
 Copyright (C) 1996-1997  Id Software, Inc.
 Copyright (C) 1999,2000  contributors of the QuakeForge project
 Please see the file "AUTHORS" for a list of contributors
@@ -19,12 +20,11 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 */
-// r_surf.c: surrface-related refresh code
 
-#include "qtypes.h"
-#include "quakedef.h"
-#include "glquake.h"
-#include "mathlib.h"
+#include <qtypes.h>
+#include <quakedef.h>
+#include <glquake.h>
+#include <mathlib.h>
 #include <sys.h>
 
 int			skytexturenum;
@@ -1321,9 +1321,7 @@ void R_DrawWorld (void)
 
 	glColor3f (1,1,1);
 	memset (lightmap_polys, 0, sizeof(lightmap_polys));
-#ifdef QUAKE2
 	R_ClearSkyBox ();
-#endif
 
 	R_RecursiveWorldNode (cl.worldmodel->nodes);
 
@@ -1331,9 +1329,7 @@ void R_DrawWorld (void)
 
 	R_BlendLightmaps ();
 
-#ifdef QUAKE2
 	R_DrawSkyBox ();
-#endif
 }
 
 
@@ -1638,10 +1634,8 @@ void GL_BuildLightmaps (void)
 			GL_CreateSurfaceLightmap (m->surfaces + i);
 			if ( m->surfaces[i].flags & SURF_DRAWTURB )
 				continue;
-#ifndef QUAKE2
 			if ( m->surfaces[i].flags & SURF_DRAWSKY )
 				continue;
-#endif
 			BuildSurfaceDisplayList (m->surfaces + i);
 		}
 	}

common/gl_warp.c

@@ -27,11 +27,12 @@
 	Boston, MA  02111-1307, USA
 */
 
-#include "qtypes.h"
-#include "quakedef.h"
-#include "glquake.h"
-#include "mathlib.h"
+#include <qtypes.h>
+#include <quakedef.h>
+#include <glquake.h>
+#include <mathlib.h>
 #include <sys.h>
+#include <console.h>
 
 extern	model_t	*loadmodel;
 
@@ -295,6 +296,7 @@ EmitBothSkyLayers ( msurface_t *fa ) {
 	glDisable (GL_BLEND);
 }
 
+#if 0
 /*
 	R_DrawSkyChain
 */
@@ -303,55 +305,19 @@ R_DrawSkyChain ( msurface_t *s ) {
 
 	msurface_t	*fa;
 
-	GL_DisableMultitexture();
-
-	// used when gl_texsort is on
-	GL_Bind(solidskytexture);
-	speedscale = realtime*8;
-	speedscale -= (int)speedscale & ~127 ;
-
-	for (fa=s ; fa ; fa=fa->texturechain)
-		EmitSkyPolys (fa);
-
-	glEnable (GL_BLEND);
-	GL_Bind (alphaskytexture);
-	speedscale = realtime*16;
-	speedscale -= (int)speedscale & ~127 ;
-
-	for (fa=s ; fa ; fa=fa->texturechain)
-		EmitSkyPolys (fa);
-
-	glDisable (GL_BLEND);
 }
+#endif
 
 /*
 	Quake 2 sky rendering ("skyboxes")
 */
 
-#ifdef QUAKE2
-
 #define	SKY_TEX		2000
 
 /*
 	PCX Loading
 */
 
-typedef struct {
-    char	manufacturer;
-    char	version;
-    char	encoding;
-    char	bits_per_pixel;
-    unsigned short	xmin,ymin,xmax,ymax;
-    unsigned short	hres,vres;
-    unsigned char	palette[48];
-    char	reserved;
-    char	color_planes;
-    unsigned short	bytes_per_line;
-    unsigned short	palette_type;
-    char	filler[58];
-    unsigned 	data;			// unbounded
-} pcx_t;
-
 byte	*pcx_rgb;
 
 /*
@@ -460,8 +426,9 @@ void
 LoadTGA (QFile *fin) {
 
 	int		columns, rows, numPixels;
-	byte	*pixbuf;
+	byte		*pixbuf;
 	int		row, column;
+	unsigned char	red = 0, green = 0, blue = 0, alphabyte = 0;
 
 	targa_header.id_length = Qgetc(fin);
 	targa_header.colormap_type = Qgetc(fin);
@@ -498,7 +465,6 @@ LoadTGA (QFile *fin) {
 		for(row=rows-1; row>=0; row--) {
 			pixbuf = targa_rgba + row*columns*4;
 			for(column=0; column<columns; column++) {
-				unsigned char red,green,blue,alphabyte;
 				switch (targa_header.pixel_size) {
 					case 24:
 							
@@ -525,7 +491,7 @@ LoadTGA (QFile *fin) {
 		}
 	}
 	else if (targa_header.image_type==10) {   // Runlength encoded RGB images
-		unsigned char red,green,blue,alphabyte,packetHeader,packetSize,j;
+		unsigned char packetHeader,packetSize,j;
 		for(row=rows-1; row>=0; row--) {
 			pixbuf = targa_rgba + row*columns*4;
 			for(column=0; column<columns; ) {
@@ -613,13 +579,16 @@ char	*suf[6] = {"rt", "bk", "lf", "ft", "up", "dn"};
 void
 R_LoadSkys ( void ) {
 
-	int		i;
+	int	i;
 	QFile	*f;
 	char	name[64];
+	cvar_t	*r_skyname;
 
+	r_skyname = Cvar_Get ("r_skyname","sky",CVAR_NONE, "");
 	for (i=0 ; i<6 ; i++) {
 		GL_Bind (SKY_TEX + i);
-		snprintf(name, sizeof(name), "gfx/env/bkgtst%s.tga", suf[i]);
+		snprintf(name, sizeof(name), "gfx/env/%s%s.tga",
+				r_skyname->string, suf[i]);
 		COM_FOpenFile (name, &f);
 		if (!f) {
 			Con_Printf ("Couldn't load %s\n", name);
@@ -851,19 +820,44 @@ R_DrawSkyChain (msurface_t *s) {
 	vec3_t	verts[MAX_CLIP_VERTS];
 	glpoly_t	*p;
 
-	c_sky = 0;
-	GL_Bind(solidskytexture);
+	if (1)
+	{
+		c_sky = 0;
+		GL_Bind(solidskytexture);
 
-	// calculate vertex values for sky box
+		// calculate vertex values for sky box
 
-	for (fa=s ; fa ; fa=fa->texturechain) {
-		for (p=fa->polys ; p ; p=p->next) {
-			for (i=0 ; i<p->numverts ; i++) {
-				VectorSubtract (p->verts[i], r_origin, verts[i]);
+		for (fa=s ; fa ; fa=fa->texturechain) {
+			for (p=fa->polys ; p ; p=p->next) {
+				for (i=0 ; i<p->numverts ; i++) {
+					VectorSubtract (p->verts[i], r_origin, verts[i]);
+				}
+				ClipSkyPolygon (p->numverts, verts[0], 0);
 			}
-			ClipSkyPolygon (p->numverts, verts[0], 0);
 		}
 	}
+	else
+	{
+		GL_DisableMultitexture();
+
+		// used when gl_texsort is on
+		GL_Bind(solidskytexture);
+		speedscale = realtime*8;
+		speedscale -= (int)speedscale & ~127 ;
+
+		for (fa=s ; fa ; fa=fa->texturechain)
+			EmitSkyPolys (fa);
+
+		glEnable (GL_BLEND);
+		GL_Bind (alphaskytexture);
+		speedscale = realtime*16;
+		speedscale -= (int)speedscale & ~127 ;
+
+		for (fa=s ; fa ; fa=fa->texturechain)
+			EmitSkyPolys (fa);
+
+		glDisable (GL_BLEND);
+	}
 }
 
 /*
@@ -923,9 +917,9 @@ int	skytexorder[6] = {0,2,1,3,4,5};
 void
 R_DrawSkyBox (void) {
 
-	int		i, j, k;
-	vec3_t	v;
-	float	s, t;
+	int		i; //, j, k;
+//	vec3_t	v;
+//	float	s, t;
 
 #if 0
 	glEnable (GL_BLEND);
@@ -961,7 +955,6 @@ R_DrawSkyBox (void) {
 #endif
 }
 
-#endif	// QUAKE2
 
 /*
 	R_InitSky

common/glquake.h

@@ -239,6 +239,9 @@ void EmitBothSkyLayers (msurface_t *fa);
 void EmitWaterPolys (msurface_t *fa);
 void EmitSkyPolys (msurface_t *fa);
 void R_DrawSkyChain (msurface_t *s);
+void R_LoadSkys (void);
+void R_ClearSkyBox (void);
+void R_DrawSkyBox (void);
 
 //
 // gl_draw.c