X-Git-Url: http://de.git.xonotic.org/?a=blobdiff_plain;f=r_sky.c;h=d5b21c0d0ef348660dbdb8674b292a5c4975d3d0;hb=3e7c8230f34c2dd6252e26d595b42b73b9f8dd4c;hp=3c11c306d0eee3aeec3b65e1aa24c170cb3c239f;hpb=ee20f083fe62ae17469eccfd57b1c7d478b1689b;p=xonotic%2Fdarkplaces.git

diff --git a/r_sky.c b/r_sky.c
index 3c11c306..d5b21c0d 100644
--- a/r_sky.c
+++ b/r_sky.c
@@ -1,107 +1,51 @@
-#include "quakedef.h"
-
-void LoadSky_f(void);
-
-cvar_t r_skyquality = {CVAR_SAVE, "r_skyquality", "2"};
-cvar_t r_skyflush = {0, "r_skyflush", "0"};
 
-static char skyworldname[1024];
-rtexture_t *mergeskytexture;
-rtexture_t *solidskytexture;
-rtexture_t *alphaskytexture;
-static qboolean skyavailable_quake;
-static qboolean skyavailable_box;
-static rtexturepool_t *skytexturepool;
+#include "quakedef.h"
+#include "image.h"
 
+// FIXME: fix skybox after vid_restart
+cvar_t r_sky = {CVAR_SAVE, "r_sky", "1"};
+qboolean skyavailable_quake;
+qboolean skyavailable_box;
 int skyrendernow;
 int skyrendermasked;
-int skyrenderglquake;
-
-static void R_BuildSky (int scrollupper, int scrolllower);
-
-static void r_sky_start(void)
-{
-	skytexturepool = R_AllocTexturePool();
-	mergeskytexture = NULL;
-	solidskytexture = NULL;
-	alphaskytexture = NULL;
-}
-
-static void r_sky_shutdown(void)
-{
-	R_FreeTexturePool(&skytexturepool);
-	mergeskytexture = NULL;
-	solidskytexture = NULL;
-	alphaskytexture = NULL;
-}
-
-int R_SetSkyBox(char *sky);
-
-static void r_sky_newmap(void)
-{
-	skyavailable_quake = false;
-	if (!strcmp(skyworldname, cl.worldmodel->name))
-		skyavailable_quake = true;
-}
-
-void R_Sky_Init(void)
-{
-	Cmd_AddCommand ("loadsky", &LoadSky_f);
-	Cvar_RegisterVariable (&r_skyquality);
-	Cvar_RegisterVariable (&r_skyflush);
-	R_RegisterModule("R_Sky", r_sky_start, r_sky_shutdown, r_sky_newmap);
-}
 
+static rtexture_t *solidskytexture;
+static rtexture_t *alphaskytexture;
 static int skyrendersphere;
 static int skyrenderbox;
+static rtexturepool_t *skytexturepool;
+static char skyname[256];
+static char *suf[6] = {"rt", "bk", "lf", "ft", "up", "dn"};
+static rtexture_t *skyboxside[6];
 
 void R_SkyStartFrame(void)
 {
 	skyrendernow = false;
 	skyrendersphere = false;
 	skyrenderbox = false;
-	skyrenderglquake = false;
 	skyrendermasked = false;
-	if (r_skyquality.integer >= 1 && !fogenabled)
+	if (r_sky.integer && !fogenabled)
 	{
 		if (skyavailable_box)
 			skyrenderbox = true;
 		else if (skyavailable_quake)
-		{
-			switch(r_skyquality.integer)
-			{
-			case 1:
-				skyrenderglquake = true;
-				break;
-			default:
-			case 2:
-				skyrendersphere = true;
-				break;
-			}
-		}
-		if (skyrenderbox || skyrendersphere)
-		{
-			// for depth-masked sky, render the sky on the first sky surface encountered
-			skyrendernow = true;
-			skyrendermasked = true;
-		}
+			skyrendersphere = true;
+		// for depth-masked sky, render the sky on the first sky surface encountered
+		skyrendernow = true;
+		skyrendermasked = true;
 	}
 }
 
-static char skyname[256];
-
 /*
 ==================
 R_SetSkyBox
 ==================
 */
-static char *suf[6] = {"rt", "bk", "lf", "ft", "up", "dn"};
-static rtexture_t *skyboxside[6];
-int R_SetSkyBox(char *sky)
+int R_SetSkyBox(const char *sky)
 {
-	int		i;
-	char	name[1024];
-	byte*	image_rgba;
+	int i;
+	char name[1024];
+	qbyte *image_rgba;
 
 	if (strcmp(sky, skyname) == 0) // no change
 		return true;
@@ -131,7 +75,7 @@ int R_SetSkyBox(char *sky)
 				continue;
 			}
 		}
-		skyboxside[i] = R_LoadTexture(skytexturepool, va("skyboxside%d", i), image_width, image_height, image_rgba, TEXTYPE_RGBA, TEXF_PRECACHE);
+		skyboxside[i] = R_LoadTexture2D(skytexturepool, va("skyboxside%d", i), image_width, image_height, image_rgba, TEXTYPE_RGBA, TEXF_CLAMP | TEXF_PRECACHE, NULL);
 		Mem_Free(image_rgba);
 	}
 
@@ -172,242 +116,212 @@ void LoadSky_f (void)
 	}
 }
 
-#define R_SkyBoxPolyVec(i,s,t,x,y,z) \
-	vert[i][0] = (x) * 1024.0f + r_origin[0];\
-	vert[i][1] = (y) * 1024.0f + r_origin[1];\
-	vert[i][2] = (z) * 1024.0f + r_origin[2];\
-	st[i][0] = (s) * (254.0f/256.0f) + (1.0f/256.0f);\
-	st[i][1] = (t) * (254.0f/256.0f) + (1.0f/256.0f);
-
-int skyboxindex[6] = {0, 1, 2, 0, 2, 3};
-
 static void R_SkyBox(void)
 {
-	float vert[4][4], st[4][2];
-	rmeshinfo_t m;
+	rmeshstate_t m;
+
+#define R_SkyBoxPolyVec(i,s,t,x,y,z) \
+	varray_vertex[i * 4 + 0] = (x) * 16.0f;\
+	varray_vertex[i * 4 + 1] = (y) * 16.0f;\
+	varray_vertex[i * 4 + 2] = (z) * 16.0f;\
+	varray_texcoord[0][i * 4 + 0] = (s);\
+	varray_texcoord[0][i * 4 + 1] = (t);
+
 	memset(&m, 0, sizeof(m));
-	m.transparent = false;
 	m.blendfunc1 = GL_ONE;
 	m.blendfunc2 = GL_ZERO;
-	m.numtriangles = 2;
-	m.numverts = 4;
-	m.index = skyboxindex;
-	m.vertex = &vert[0][0];
-	m.vertexstep = sizeof(float[4]);
-	m.cr = 1;
-	m.cg = 1;
-	m.cb = 1;
-	m.ca = 1;
-	m.texcoords[0] = &st[0][0];
-	m.texcoordstep[0] = sizeof(float[2]);
+	m.depthdisable = true; // don't modify or read zbuffer
 	m.tex[0] = R_GetTexture(skyboxside[3]); // front
+	R_Mesh_State(&m);
+
+	GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
+	
 	R_SkyBoxPolyVec(0, 1, 0,  1, -1,  1);
 	R_SkyBoxPolyVec(1, 1, 1,  1, -1, -1);
 	R_SkyBoxPolyVec(2, 0, 1,  1,  1, -1);
 	R_SkyBoxPolyVec(3, 0, 0,  1,  1,  1);
-	R_Mesh_Draw(&m);
+	R_Mesh_Draw(4, 2, polygonelements);
 	m.tex[0] = R_GetTexture(skyboxside[1]); // back
+	R_Mesh_State(&m);
 	R_SkyBoxPolyVec(0, 1, 0, -1,  1,  1);
 	R_SkyBoxPolyVec(1, 1, 1, -1,  1, -1);
 	R_SkyBoxPolyVec(2, 0, 1, -1, -1, -1);
 	R_SkyBoxPolyVec(3, 0, 0, -1, -1,  1);
-	R_Mesh_Draw(&m);
+	R_Mesh_Draw(4, 2, polygonelements);
 	m.tex[0] = R_GetTexture(skyboxside[0]); // right
+	R_Mesh_State(&m);
 	R_SkyBoxPolyVec(0, 1, 0,  1,  1,  1);
 	R_SkyBoxPolyVec(1, 1, 1,  1,  1, -1);
 	R_SkyBoxPolyVec(2, 0, 1, -1,  1, -1);
 	R_SkyBoxPolyVec(3, 0, 0, -1,  1,  1);
-	R_Mesh_Draw(&m);
+	R_Mesh_Draw(4, 2, polygonelements);
 	m.tex[0] = R_GetTexture(skyboxside[2]); // left
+	R_Mesh_State(&m);
 	R_SkyBoxPolyVec(0, 1, 0, -1, -1,  1);
 	R_SkyBoxPolyVec(1, 1, 1, -1, -1, -1);
 	R_SkyBoxPolyVec(2, 0, 1,  1, -1, -1);
 	R_SkyBoxPolyVec(3, 0, 0,  1, -1,  1);
-	R_Mesh_Draw(&m);
+	R_Mesh_Draw(4, 2, polygonelements);
 	m.tex[0] = R_GetTexture(skyboxside[4]); // up
+	R_Mesh_State(&m);
 	R_SkyBoxPolyVec(0, 1, 0,  1, -1,  1);
 	R_SkyBoxPolyVec(1, 1, 1,  1,  1,  1);
 	R_SkyBoxPolyVec(2, 0, 1, -1,  1,  1);
 	R_SkyBoxPolyVec(3, 0, 0, -1, -1,  1);
-	R_Mesh_Draw(&m);
+	R_Mesh_Draw(4, 2, polygonelements);
 	m.tex[0] = R_GetTexture(skyboxside[5]); // down
+	R_Mesh_State(&m);
 	R_SkyBoxPolyVec(0, 1, 0,  1,  1, -1);
 	R_SkyBoxPolyVec(1, 1, 1,  1, -1, -1);
 	R_SkyBoxPolyVec(2, 0, 1, -1, -1, -1);
 	R_SkyBoxPolyVec(3, 0, 0, -1,  1, -1);
-	R_Mesh_Draw(&m);
-	R_Mesh_Render();
-	if (r_skyflush.integer)
-		glFlush();
-	// clear the zbuffer that was used while rendering the sky
-	glClear(GL_DEPTH_BUFFER_BIT);
-	if (r_skyflush.integer)
-		glFlush();
+	R_Mesh_Draw(4, 2, polygonelements);
 }
 
-static float skysphere[33*33*5];
-static int skysphereindices[32*32*6];
-static void skyspherecalc(float *sphere, float dx, float dy, float dz)
+#define skygridx 32
+#define skygridx1 (skygridx + 1)
+#define skygridxrecip (1.0f / (skygridx))
+#define skygridy 32
+#define skygridy1 (skygridy + 1)
+#define skygridyrecip (1.0f / (skygridy))
+#define skysphere_numverts (skygridx1 * skygridy1)
+#define skysphere_numtriangles (skygridx * skygridy * 2)
+static float skysphere_vertex[skysphere_numverts * 4];
+static float skysphere_texcoord[skysphere_numverts * 4];
+static int skysphere_elements[skysphere_numtriangles * 3];
+
+static void skyspherecalc(void)
 {
-	float a, b, x, ax, ay, v[3], length;
-	int i, j, *index;
-	for (a = 0;a <= 1;a += (1.0 / 32.0))
+	int i, j, *e;
+	float a, b, x, ax, ay, v[3], length, *vertex, *texcoord;
+	float dx, dy, dz;
+	dx = 16;
+	dy = 16;
+	dz = 16 / 3;
+	vertex = skysphere_vertex;
+	texcoord = skysphere_texcoord;
+	for (j = 0;j <= skygridy;j++)
 	{
+		a = j * skygridyrecip;
 		ax = cos(a * M_PI * 2);
 		ay = -sin(a * M_PI * 2);
-		for (b = 0;b <= 1;b += (1.0 / 32.0))
+		for (i = 0;i <= skygridx;i++)
 		{
-			x = cos(b * M_PI * 2);
+			b = i * skygridxrecip;
+			x = cos((b + 0.5) * M_PI);
 			v[0] = ax*x * dx;
 			v[1] = ay*x * dy;
-			v[2] = -sin(b * M_PI * 2) * dz;
+			v[2] = -sin((b + 0.5) * M_PI) * dz;
 			length = 3.0f / sqrt(v[0]*v[0]+v[1]*v[1]+(v[2]*v[2]*9));
-			*sphere++ = v[0] * length;
-			*sphere++ = v[1] * length;
-			*sphere++ = v[0];
-			*sphere++ = v[1];
-			*sphere++ = v[2];
+			*texcoord++ = v[0] * length;
+			*texcoord++ = v[1] * length;
+			*texcoord++ = 0;
+			*texcoord++ = 0;
+			*vertex++ = v[0];
+			*vertex++ = v[1];
+			*vertex++ = v[2];
+			*vertex++ = 1;
 		}
 	}
-	index = skysphereindices;
-	for (j = 0;j < 32;j++)
+	e = skysphere_elements;
+	for (j = 0;j < skygridy;j++)
 	{
-		for (i = 0;i < 32;i++)
+		for (i = 0;i < skygridx;i++)
 		{
-			*index++ =  j      * 33 + i;
-			*index++ =  j      * 33 + i + 1;
-			*index++ = (j + 1) * 33 + i;
+			*e++ =  j      * skygridx1 + i;
+			*e++ =  j      * skygridx1 + i + 1;
+			*e++ = (j + 1) * skygridx1 + i;
 
-			*index++ =  j      * 33 + i + 1;
-			*index++ = (j + 1) * 33 + i + 1;
-			*index++ = (j + 1) * 33 + i;
+			*e++ =  j      * skygridx1 + i + 1;
+			*e++ = (j + 1) * skygridx1 + i + 1;
+			*e++ = (j + 1) * skygridx1 + i;
 		}
 		i++;
 	}
 }
 
-static void skyspherearrays(float *vert, float *tex, float *tex2, float *source, float s, float s2)
-{
-	float *v, *t, *t2, radius;
-	int i;
-	v = vert;
-	t = tex;
-	t2 = tex2;
-	radius = r_farclip - 8;
-	for (i = 0;i < (33*33);i++)
-	{
-		*t++ = source[0] + s;
-		*t++ = source[1] + s;
-		*t2++ = source[0] + s2;
-		*t2++ = source[1] + s2;
-		*v++ = source[2] + r_origin[0];
-		*v++ = source[3] + r_origin[1];
-		*v++ = source[4] + r_origin[2];
-		*v++ = 0;
-		source += 5;
-	}
-}
-
 static void R_SkySphere(void)
 {
-	float speedscale, speedscale2;
-	float vert[33*33*4], tex[33*33*2], tex2[33*33*2];
+	int i;
+	float speedscale, *t;
 	static qboolean skysphereinitialized = false;
-	rmeshinfo_t m;
+	rmeshstate_t m;
 	if (!skysphereinitialized)
 	{
 		skysphereinitialized = true;
-		skyspherecalc(skysphere, 1024, 1024, 1024 / 3);
+		skyspherecalc();
 	}
+
+	// scroll speed for upper layer
+	speedscale = cl.time*8.0/128.0;
+	// wrap the scroll just to be extra kind to float accuracy
+	speedscale -= (int)speedscale;
+
+	R_Mesh_ResizeCheck(skysphere_numverts);
+
 	memset(&m, 0, sizeof(m));
-	m.transparent = false;
 	m.blendfunc1 = GL_ONE;
 	m.blendfunc2 = GL_ZERO;
-	m.numtriangles = 32*32*2;
-	m.numverts = 33*33;
-	m.index = skysphereindices;
-	m.vertex = vert;
-	m.vertexstep = sizeof(float[4]);
-	m.cr = 1;
-	m.cg = 1;
-	m.cb = 1;
-	m.ca = 1;
-	m.texcoords[0] = tex;
-	m.texcoordstep[0] = sizeof(float[2]);
-	speedscale = cl.time*8.0/128.0;
-	speedscale -= (int)speedscale;
-	speedscale2 = cl.time*16.0/128.0;
-	speedscale2 -= (int)speedscale2;
-	skyspherearrays(vert, tex, tex2, skysphere, speedscale, speedscale2);
+	m.depthdisable = true; // don't modify or read zbuffer
 	m.tex[0] = R_GetTexture(solidskytexture);
-	R_Mesh_Draw(&m);
+	R_Mesh_State(&m);
+
+	GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
+
+	memcpy(varray_vertex, skysphere_vertex, skysphere_numverts * sizeof(float[4]));
+	memcpy(varray_texcoord[0], skysphere_texcoord, skysphere_numverts * sizeof(float[4]));
+	for (i = 0, t = varray_texcoord[0];i < skysphere_numverts;i++, t += 4)
+	{
+		t[0] += speedscale;
+		t[1] += speedscale;
+	}
+	R_Mesh_Draw(skysphere_numverts, skysphere_numtriangles, skysphere_elements);
 
 	m.blendfunc1 = GL_SRC_ALPHA;
 	m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 	m.tex[0] = R_GetTexture(alphaskytexture);
-	m.texcoords[0] = tex2;
-	R_Mesh_Draw(&m);
-	R_Mesh_Render();
-	if (r_skyflush.integer)
-		glFlush();
-	// clear the zbuffer that was used while rendering the sky
-	glClear(GL_DEPTH_BUFFER_BIT);
-	if (r_skyflush.integer)
-		glFlush();
-}
+	R_Mesh_State(&m);
 
-void R_Sky(void)
-{
-	if (skyrendersphere)
-		R_SkySphere();
-	else if (skyrenderbox)
-		R_SkyBox();
+	// scroll it again, this makes the lower cloud layer scroll twice as fast (just like quake did)
+	for (i = 0, t = varray_texcoord[0];i < skysphere_numverts;i++, t += 4)
+	{
+		t[0] += speedscale;
+		t[1] += speedscale;
+	}
+	R_Mesh_Draw(skysphere_numverts, skysphere_numtriangles, skysphere_elements);
 }
 
-//===============================================================
-
-static byte skyupperlayerpixels[128*128*4];
-static byte skylowerlayerpixels[128*128*4];
-static byte skymergedpixels[128*128*4];
-
-static void R_BuildSky (int scrollupper, int scrolllower)
+void R_Sky(void)
 {
-	int x, y, ux, uy, lx, ly;
-	byte *m, *u, *l;
-	m = skymergedpixels;
-	for (y = 0;y < 128;y++)
+	matrix4x4_t skymatrix;
+	if (skyrendermasked)
 	{
-		uy = (y + scrollupper) & 127;
-		ly = (y + scrolllower) & 127;
-		for (x = 0;x < 128;x++)
+		Matrix4x4_CreateTranslate(&skymatrix, r_origin[0], r_origin[1], r_origin[2]);
+		R_Mesh_Matrix(&skymatrix);
+		if (skyrendersphere)
 		{
-			ux = (x + scrollupper) & 127;
-			lx = (x + scrolllower) & 127;
-			u = &skyupperlayerpixels[(uy * 128 + ux) * 4];
-			l = &skylowerlayerpixels[(ly * 128 + lx) * 4];
-			if (l[3])
-			{
-				if (l[3] == 255)
-					*((int *)m) = *((int *)l);
-				else
-				{
-					m[0] = ((((int) l[0] - (int) u[0]) * (int) l[3]) >> 8) + (int) u[0];
-					m[1] = ((((int) l[1] - (int) u[1]) * (int) l[3]) >> 8) + (int) u[1];
-					m[2] = ((((int) l[2] - (int) u[2]) * (int) l[3]) >> 8) + (int) u[2];
-					m[3] = 255;
-				}
-			}
-			else
-				*((int *)m) = *((int *)u);
-			m += 4;
+			// this does not modify depth buffer
+			R_SkySphere();
+		}
+		else if (skyrenderbox)
+		{
+			// this does not modify depth buffer
+			R_SkyBox();
 		}
+		/* this will be skyroom someday
+		else
+		{
+			// this modifies the depth buffer so we have to clear it afterward
+			//R_SkyRoom();
+			// clear the depthbuffer that was used while rendering the skyroom
+			//qglClear(GL_DEPTH_BUFFER_BIT);
+		}
+		*/
 	}
-	if (mergeskytexture)
-		R_UpdateTexture(mergeskytexture, skymergedpixels);
-	else
-		mergeskytexture = R_LoadTexture(skytexturepool, "mergedskytexture", 128, 128, skymergedpixels, TEXTYPE_RGBA, TEXF_ALWAYSPRECACHE);
 }
 
+//===============================================================
+
 /*
 =============
 R_InitSky
@@ -415,20 +329,17 @@ R_InitSky
 A sky texture is 256*128, with the right side being a masked overlay
 ==============
 */
-void R_InitSky (byte *src, int bytesperpixel)
+void R_InitSky (qbyte *src, int bytesperpixel)
 {
-	int			i, j, p;
-	unsigned	trans[128*128];
-	unsigned	transpix;
-	int			r, g, b;
-	unsigned	*rgba;
+	int i, j, p, r, g, b;
+	qbyte skyupperlayerpixels[128*128*4], skylowerlayerpixels[128*128*4];
+	unsigned trans[128*128], transpix, *rgba;
 
-	strcpy(skyworldname, loadmodel->name);
+	skyavailable_quake = true;
 
 	// flush skytexturepool so we won't build up a leak from uploading textures multiple times
 	R_FreeTexturePool(&skytexturepool);
 	skytexturepool = R_AllocTexturePool();
-	mergeskytexture = NULL;
 	solidskytexture = NULL;
 	alphaskytexture = NULL;
 
@@ -448,32 +359,23 @@ void R_InitSky (byte *src, int bytesperpixel)
 			for (j=0 ; j<128 ; j++)
 			{
 				p = src[i*256 + j + 128];
-				rgba = &d_8to24table[p];
+				rgba = &palette_complete[p];
 				trans[(i*128) + j] = *rgba;
-				r += ((byte *)rgba)[0];
-				g += ((byte *)rgba)[1];
-				b += ((byte *)rgba)[2];
+				r += ((qbyte *)rgba)[0];
+				g += ((qbyte *)rgba)[1];
+				b += ((qbyte *)rgba)[2];
 			}
 		}
 
-		((byte *)&transpix)[0] = r/(128*128);
-		((byte *)&transpix)[1] = g/(128*128);
-		((byte *)&transpix)[2] = b/(128*128);
-		((byte *)&transpix)[3] = 0;
+		((qbyte *)&transpix)[0] = r/(128*128);
+		((qbyte *)&transpix)[1] = g/(128*128);
+		((qbyte *)&transpix)[2] = b/(128*128);
+		((qbyte *)&transpix)[3] = 0;
 	}
 
 	memcpy(skyupperlayerpixels, trans, 128*128*4);
 
-	solidskytexture = R_LoadTexture (skytexturepool, "sky_solidtexture", 128, 128, (byte *) trans, TEXTYPE_RGBA, TEXF_PRECACHE);
-	/*
-	for (i = 0;i < 128*128;i++)
-	{
-		((byte *)&trans[i])[0] >>= 1;
-		((byte *)&trans[i])[1] >>= 1;
-		((byte *)&trans[i])[2] >>= 1;
-	}
-	solidskytexture_half = R_LoadTexture (skytexturepool, "sky_solidtexture_half", 128, 128, (byte *) trans, TEXTYPE_RGBA, TEXF_PRECACHE);
-	*/
+	solidskytexture = R_LoadTexture2D(skytexturepool, "sky_solidtexture", 128, 128, (qbyte *) trans, TEXTYPE_RGBA, TEXF_PRECACHE, NULL);
 
 	if (bytesperpixel == 4)
 	{
@@ -491,21 +393,49 @@ void R_InitSky (byte *src, int bytesperpixel)
 				if (p == 0)
 					trans[(i*128) + j] = transpix;
 				else
-					trans[(i*128) + j] = d_8to24table[p];
+					trans[(i*128) + j] = palette_complete[p];
 			}
 		}
 	}
 
 	memcpy(skylowerlayerpixels, trans, 128*128*4);
 
-	alphaskytexture = R_LoadTexture (skytexturepool, "sky_alphatexture", 128, 128, (byte *) trans, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE);
-	/*
-	for (i = 0;i < 128*128;i++)
-	{
-		((byte *)&trans[i])[0] >>= 1;
-		((byte *)&trans[i])[1] >>= 1;
-		((byte *)&trans[i])[2] >>= 1;
-	}
-	alphaskytexture_half = R_LoadTexture (skytexturepool, "sky_alphatexture_half", 128, 128, (byte *) trans, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE);
-	*/
+	alphaskytexture = R_LoadTexture2D(skytexturepool, "sky_alphatexture", 128, 128, (qbyte *) trans, TEXTYPE_RGBA, TEXF_ALPHA | TEXF_PRECACHE, NULL);
+}
+
+void R_ResetQuakeSky(void)
+{
+	skyavailable_quake = false;
+}
+
+void R_ResetSkyBox(void)
+{
+	skyboxside[0] = skyboxside[1] = skyboxside[2] = skyboxside[3] = skyboxside[4] = skyboxside[5] = NULL;
+	skyname[0] = 0;
+	skyavailable_box = false;
+}
+
+static void r_sky_start(void)
+{
+	skytexturepool = R_AllocTexturePool();
+	solidskytexture = NULL;
+	alphaskytexture = NULL;
+}
+
+static void r_sky_shutdown(void)
+{
+	R_FreeTexturePool(&skytexturepool);
+	solidskytexture = NULL;
+	alphaskytexture = NULL;
+}
+
+static void r_sky_newmap(void)
+{
+}
+
+void R_Sky_Init(void)
+{
+	Cmd_AddCommand ("loadsky", &LoadSky_f);
+	Cvar_RegisterVariable (&r_sky);
+	R_RegisterModule("R_Sky", r_sky_start, r_sky_shutdown, r_sky_newmap);
 }