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+/**
+ *
+ * Compiz star plugin
+ *
+ * star.c
+ *
+ * This plugin is used to draw some fancy stars on the
+ * screen, much akin to snow.
+ *
+ * Copyright (c) 2007 Kyle Mallory <kyle.mallory@utah.edu>
+ *
+ * Based on the 'snow' plugin:
+ * Copyright (c) 2006 Eckhart P. <beryl@cornergraf.net>
+ * Copyright (c) 2006 Brian Jørgensen <qte@fundanemt.com>
+ * Maintained by Danny Baumann <maniac@opencompositing.org>
+ *
+ * Ported to Compiz by:
+ * Copyright (c) 2007 Sam Spilsbury <smspillaz@gmail.com>
+ *
+ *
+ *
+ * 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.
+ *
+ **/
+
+/*
+ * Many thanks to Atie H. <atie.at.matrix@gmail.com> for providing
+ * a clean plugin template
+ * Also thanks to the folks from #beryl-dev, especially Quinn_Storm
+ * for helping me make this possible
+ */
+
+#include <math.h>
+
+#include <compiz-core.h>
+#include "star_options.h"
+
+#define GET_SNOW_DISPLAY(d) \
+ ((SnowDisplay *) (d)->base.privates[displayPrivateIndex].ptr)
+
+#define SNOW_DISPLAY(d) \
+ SnowDisplay *sd = GET_SNOW_DISPLAY (d)
+
+#define GET_SNOW_SCREEN(s, sd) \
+ ((SnowScreen *) (s)->base.privates[(sd)->screenPrivateIndex].ptr)
+
+#define SNOW_SCREEN(s) \
+ SnowScreen *ss = GET_SNOW_SCREEN (s, GET_SNOW_DISPLAY (s->display))
+
+static int displayPrivateIndex = 0;
+
+/* ------------------- STRUCTS ----------------------------- */
+typedef struct _SnowDisplay
+{
+ int screenPrivateIndex;
+
+ Bool useTextures;
+
+ int snowTexNFiles;
+ CompOptionValue *snowTexFiles;
+} SnowDisplay;
+
+typedef struct _SnowTexture
+{
+ CompTexture tex;
+
+ unsigned int width;
+ unsigned int height;
+
+ Bool loaded;
+ GLuint dList;
+} SnowTexture;
+
+typedef struct _SnowFlake
+{
+ float x, y, z;
+ float xs, ys, zs;
+ float ra; /* rotation angle */
+ float rs; /* rotation speed */
+
+ SnowTexture *tex;
+} SnowFlake;
+
+typedef struct _SnowScreen
+{
+ CompScreen *s;
+
+ Bool active;
+
+ CompTimeoutHandle timeoutHandle;
+
+ PaintOutputProc paintOutput;
+ DrawWindowProc drawWindow;
+
+ SnowTexture *snowTex;
+ int snowTexturesLoaded;
+
+ GLuint displayList;
+ Bool displayListNeedsUpdate;
+
+ SnowFlake *allSnowFlakes;
+} SnowScreen;
+
+/* some forward declarations */
+static void initiateSnowFlake (SnowScreen * ss, SnowFlake * sf);
+static void snowMove (CompDisplay *d, SnowFlake * sf);
+
+int GetRand(int min, int max);
+int GetRand(int min, int max)
+{
+ return (rand() % (max - min + 1) + min);
+}
+
+float mmrand(int min, int max, float divisor);
+float mmrand(int min, int max, float divisor)
+{
+ return ((float)GetRand(min, max)) / divisor;
+};
+float bezierCurve(float p, float time);
+float bezierCurve(float p, float time) {
+ float out = p * (time+0.01) * 10;//(a*(i*i*i)) + (3.0*b*(i*i)*h) + (3.0*c*i*(h*h)) + (d*(h*h*h));
+ return out;
+}
+
+static void
+snowThink (SnowScreen *ss,
+ SnowFlake *sf)
+{
+ int boxing;
+
+ boxing = starGetScreenBoxing (ss->s->display);
+
+ if (sf->y >= ss->s->height + boxing ||
+ sf->x <= -boxing ||
+ sf->y >= ss->s->width + boxing ||
+ sf->z <= -((float) starGetScreenDepth (ss->s->display) / 500.0) ||
+ sf->z >= 1)
+ {
+ initiateSnowFlake (ss, sf);
+ }
+ snowMove (ss->s->display, sf);
+}
+
+static void
+snowMove (CompDisplay *d,
+ SnowFlake *sf)
+{
+ float tmp = 1.0f / (100.0f - starGetSnowSpeed (d));
+ int snowUpdateDelay = starGetSnowUpdateDelay (d);
+
+ float xs = bezierCurve(sf->xs, tmp);
+ float ys = bezierCurve(sf->ys, tmp);
+ float zs = bezierCurve(sf->zs, tmp);
+
+ sf->x += (float)(xs * (double)snowUpdateDelay) / (100 - (tmp + 0.5));
+ sf->y += (float)(ys * (double)snowUpdateDelay) / (100 - (tmp + 0.5));
+ sf->z += (float)(zs * (double)snowUpdateDelay) / (100 - (tmp + 0.5));
+
+}
+
+static Bool
+stepSnowPositions (void *closure)
+{
+ CompScreen *s = closure;
+ int i, numFlakes;
+ SnowFlake *snowFlake;
+ Bool onTop;
+
+ SNOW_SCREEN (s);
+
+ if (!ss->active)
+ return TRUE;
+
+ snowFlake = ss->allSnowFlakes;
+ numFlakes = starGetNumSnowflakes (s->display);
+ onTop = starGetSnowOverWindows (s->display);
+
+ for (i = 0; i < numFlakes; i++)
+ snowThink(ss, snowFlake++);
+
+ if (ss->active && !onTop)
+ {
+ CompWindow *w;
+
+ for (w = s->windows; w; w = w->next)
+ {
+ if (w->type & CompWindowTypeDesktopMask)
+ addWindowDamage (w);
+ }
+ }
+ else if (ss->active)
+ damageScreen (s);
+
+ return TRUE;
+}
+
+static Bool
+snowToggle (CompDisplay *d,
+ CompAction *action,
+ CompActionState state,
+ CompOption *option,
+ int nOption)
+{
+ CompScreen *s;
+ Window xid;
+
+ xid = getIntOptionNamed (option, nOption, "root", 0);
+ s = findScreenAtDisplay (d, xid);
+
+ if (s)
+ {
+ SNOW_SCREEN (s);
+ ss->active = !ss->active;
+ if (!ss->active)
+ damageScreen (s);
+ }
+
+ return TRUE;
+}
+
+/* -------------------- HELPER FUNCTIONS ------------------------ */
+
+/* --------------------------- RENDERING ------------------------- */
+static void
+setupDisplayList (SnowScreen *ss)
+{
+ float snowSize = starGetSnowSize (ss->s->display);
+
+ ss->displayList = glGenLists (1);
+
+ glNewList (ss->displayList, GL_COMPILE);
+ glBegin (GL_QUADS);
+
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+ glVertex3f (0, 0, -0.0);
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+ glVertex3f (0, snowSize, -0.0);
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+ glVertex3f (snowSize, snowSize, -0.0);
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+ glVertex3f (snowSize, 0, -0.0);
+
+ glEnd ();
+ glEndList ();
+}
+
+static void
+beginRendering (SnowScreen *ss,
+ CompScreen *s)
+{
+ if (starGetUseBlending (s->display))
+ glEnable (GL_BLEND);
+
+ glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ if (ss->displayListNeedsUpdate)
+ {
+ setupDisplayList (ss);
+ ss->displayListNeedsUpdate = FALSE;
+ }
+
+ glColor4f (1.0, 1.0, 1.0, 1.0);
+ if (ss->snowTexturesLoaded && starGetUseTextures (s->display))
+ {
+
+ int j = 0;
+
+ for (j = 0; j < ss->snowTexturesLoaded; j++)
+ {
+
+ int i, numFlakes = starGetNumSnowflakes (s->display);
+ SnowFlake *snowFlake = ss->allSnowFlakes;
+ enableTexture (ss->s, &ss->snowTex[j].tex, COMP_TEXTURE_FILTER_GOOD);
+
+ for (i = 0; i < numFlakes; i++)
+ {
+ if (snowFlake->tex == &ss->snowTex[j])
+ {
+ glTranslatef(snowFlake->x, snowFlake->y, snowFlake->z);
+ glCallList(ss->snowTex[j].dList);
+ glTranslatef(-snowFlake->x, -snowFlake->y, -snowFlake->z);
+ }
+ snowFlake++;
+ }
+ disableTexture (ss->s, &ss->snowTex[j].tex);
+ }
+ /*int j;
+
+ for (j = 0; j < ss->snowTexturesLoaded; j++)
+ {
+ SnowFlake *snowFlake = ss->allSnowFlakes;
+ int i, numFlakes = snowGetNumSnowflakes (s->display);
+ Bool snowRotate = snowGetSnowRotation (s->display);
+
+ enableTexture (ss->s, &ss->snowTex[j].tex,
+ COMP_TEXTURE_FILTER_GOOD);
+
+ for (i = 0; i < numFlakes; i++)
+ {
+ if (snowFlake->tex == &ss->snowTex[j])
+ {
+ glTranslatef (snowFlake->x, snowFlake->y, snowFlake->z);
+ if (snowRotate)
+ glRotatef (snowFlake->ra, 0, 0, 1);
+ glCallList (ss->snowTex[j].dList);
+ if (snowRotate)
+ glRotatef (-snowFlake->ra, 0, 0, 1);
+ glTranslatef (-snowFlake->x, -snowFlake->y, -snowFlake->z);
+ }
+ snowFlake++;
+ }
+ disableTexture (ss->s, &ss->snowTex[j].tex);
+ }*/
+ }
+ else
+ {
+ SnowFlake *snowFlake = ss->allSnowFlakes;
+ int i, numFlakes = starGetNumSnowflakes (s->display);
+
+ for (i = 0; i < numFlakes; i++)
+ {
+ glTranslatef (snowFlake->x, snowFlake->y, snowFlake->z);
+ glRotatef (snowFlake->ra, 0, 0, 1);
+ glCallList (ss->displayList);
+ glRotatef (-snowFlake->ra, 0, 0, 1);
+ glTranslatef (-snowFlake->x, -snowFlake->y, -snowFlake->z);
+ snowFlake++;
+ }
+ }
+
+ glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ if (starGetUseBlending (s->display))
+ {
+ glDisable (GL_BLEND);
+ glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+ }
+}
+
+/* ------------------------ FUNCTIONS -------------------- */
+
+static Bool
+snowPaintOutput (CompScreen *s,
+ const ScreenPaintAttrib *sa,
+ const CompTransform *transform,
+ Region region,
+ CompOutput *output,
+ unsigned int mask)
+{
+ Bool status;
+
+ SNOW_SCREEN (s);
+
+ if (ss->active && !starGetSnowOverWindows (s->display))
+ mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS_MASK;
+
+ UNWRAP (ss, s, paintOutput);
+ status = (*s->paintOutput) (s, sa, transform, region, output, mask);
+ WRAP (ss, s, paintOutput, snowPaintOutput);
+
+ if (ss->active && starGetSnowOverWindows (s->display))
+ {
+ CompTransform sTransform = *transform;
+
+ transformToScreenSpace (s, output, -DEFAULT_Z_CAMERA, &sTransform);
+
+ glPushMatrix ();
+ glLoadMatrixf (sTransform.m);
+ beginRendering (ss, s);
+ glPopMatrix ();
+ }
+
+ return status;
+}
+
+static Bool
+snowDrawWindow (CompWindow *w,
+ const CompTransform *transform,
+ const FragmentAttrib *attrib,
+ Region region,
+ unsigned int mask)
+{
+ Bool status;
+
+ SNOW_SCREEN (w->screen);
+
+ /* First draw Window as usual */
+ UNWRAP (ss, w->screen, drawWindow);
+ status = (*w->screen->drawWindow) (w, transform, attrib, region, mask);
+ WRAP (ss, w->screen, drawWindow, snowDrawWindow);
+
+ /* Check whether this is the Desktop Window */
+ if (ss->active && (w->type & CompWindowTypeDesktopMask) &&
+ !starGetSnowOverWindows (w->screen->display))
+ {
+ beginRendering (ss, w->screen);
+ }
+
+ return status;
+}
+
+static void
+initiateSnowFlake (SnowScreen *ss,
+ SnowFlake *sf)
+{
+ /* TODO: possibly place snowflakes based on FOV, instead of a cube. */
+ int boxing = starGetScreenBoxing (ss->s->display);
+ float init;
+
+ // speed of star
+ sf->xs = mmrand(-50000, 50000, 5000);
+ sf->ys = mmrand(-50000, 50000, 5000);
+ sf->zs = mmrand(000, 200, 2000);
+
+ //TODO: possibly place stars based on FOV, instead of a cube.
+ sf->x = ss->s->width * .5;
+ sf->y = ss->s->height * .5;
+ sf->z = mmrand(000, 0.1, 5000);
+ init = mmrand(0,100, 1); //init = distance to center of the screen
+
+ sf->x += init * sf->xs;
+ sf->y += init * sf->ys;
+
+ /* switch (snowGetSnowDirection (ss->s->display))
+ {
+ case SnowDirectionTopToBottom:
+ sf->x = mmRand (-boxing, ss->s->width + boxing, 1);
+ sf->xs = mmRand (-1, 1, 500);
+ sf->y = mmRand (-300, 0, 1);
+ sf->ys = mmRand (1, 3, 1);
+ break;
+ case SnowDirectionBottomToTop:
+ sf->x = mmRand (-boxing, ss->s->width + boxing, 1);
+ sf->xs = mmRand (-1, 1, 500);
+ sf->y = mmRand (ss->s->height, ss->s->height + 300, 1);
+ sf->ys = -mmRand (1, 3, 1);
+ break;
+ case SnowDirectionRightToLeft:
+ sf->x = mmRand (ss->s->width, ss->s->width + 300, 1);
+ sf->xs = -mmRand (1, 3, 1);
+ sf->y = mmRand (-boxing, ss->s->height + boxing, 1);
+ sf->ys = mmRand (-1, 1, 500);
+ break;
+ case SnowDirectionLeftToRight:
+ sf->x = mmRand (-300, 0, 1);
+ sf->xs = mmRand (1, 3, 1);
+ sf->y = mmRand (-boxing, ss->s->height + boxing, 1);
+ sf->ys = mmRand (-1, 1, 500);
+ break;
+ default:
+ break;
+ }
+
+ sf->z = mmRand (-snowGetScreenDepth (ss->s->display), 0.1, 5000);
+ sf->zs = mmRand (-1000, 1000, 500000);
+ sf->ra = mmRand (-1000, 1000, 50);
+ sf->rs = mmRand (-1000, 1000, 1000);*/
+}
+
+static void
+setSnowflakeTexture (SnowScreen *ss,
+ SnowFlake *sf)
+{
+ if (ss->snowTexturesLoaded)
+ sf->tex = &ss->snowTex[rand () % ss->snowTexturesLoaded];
+}
+
+static void
+updateSnowTextures (CompScreen *s)
+{
+ int i, count = 0;
+ float snowSize = starGetSnowSize(s->display);
+ int numFlakes = starGetNumSnowflakes(s->display);
+ SnowFlake *snowFlake;
+
+ SNOW_SCREEN (s);
+ SNOW_DISPLAY (s->display);
+
+ snowFlake = ss->allSnowFlakes;
+
+ for (i = 0; i < ss->snowTexturesLoaded; i++)
+ {
+ finiTexture (s, &ss->snowTex[i].tex);
+ glDeleteLists (ss->snowTex[i].dList, 1);
+ }
+
+ if (ss->snowTex)
+ free (ss->snowTex);
+ ss->snowTexturesLoaded = 0;
+
+ ss->snowTex = calloc (1, sizeof (SnowTexture) * sd->snowTexNFiles);
+
+ for (i = 0; i < sd->snowTexNFiles; i++)
+ {
+ CompMatrix *mat;
+ SnowTexture *sTex;
+
+ ss->snowTex[count].loaded =
+ readImageToTexture (s, &ss->snowTex[count].tex,
+ sd->snowTexFiles[i].s,
+ &ss->snowTex[count].width,
+ &ss->snowTex[count].height);
+ if (!ss->snowTex[count].loaded)
+ {
+ compLogMessage (s->display, "snow", CompLogLevelWarn,
+ "Texture not found : %s", sd->snowTexFiles[i].s);
+ continue;
+ }
+ compLogMessage (s->display, "snow", CompLogLevelInfo,
+ "Loaded Texture %s", sd->snowTexFiles[i].s);
+
+ mat = &ss->snowTex[count].tex.matrix;
+ sTex = &ss->snowTex[count];
+
+ sTex->dList = glGenLists (1);
+ glNewList (sTex->dList, GL_COMPILE);
+
+ glBegin (GL_QUADS);
+
+ glTexCoord2f (COMP_TEX_COORD_X (mat, 0), COMP_TEX_COORD_Y (mat, 0));
+ glVertex2f (0, 0);
+ glTexCoord2f (COMP_TEX_COORD_X (mat, 0),
+ COMP_TEX_COORD_Y (mat, sTex->height));
+ glVertex2f (0, snowSize * sTex->height / sTex->width);
+ glTexCoord2f (COMP_TEX_COORD_X (mat, sTex->width),
+ COMP_TEX_COORD_Y (mat, sTex->height));
+ glVertex2f (snowSize, snowSize * sTex->height / sTex->width);
+ glTexCoord2f (COMP_TEX_COORD_X (mat, sTex->width),
+ COMP_TEX_COORD_Y (mat, 0));
+ glVertex2f (snowSize, 0);
+
+ glEnd ();
+ glEndList ();
+
+ count++;
+ }
+
+ ss->snowTexturesLoaded = count;
+ if (count < sd->snowTexNFiles)
+ ss->snowTex = realloc (ss->snowTex, sizeof (SnowTexture) * count);
+
+ for (i = 0; i < numFlakes; i++)
+ setSnowflakeTexture (ss, snowFlake++);
+}
+
+static Bool
+snowInitScreen (CompPlugin *p,
+ CompScreen *s)
+{
+ SnowScreen *ss;
+ int i, numFlakes = starGetNumSnowflakes (s->display);
+ SnowFlake *snowFlake;
+
+ SNOW_DISPLAY (s->display);
+
+ ss = calloc (1, sizeof(SnowScreen));
+
+ s->base.privates[sd->screenPrivateIndex].ptr = ss;
+
+ ss->s = s;
+ ss->snowTexturesLoaded = 0;
+ ss->snowTex = NULL;
+ ss->active = FALSE;
+ ss->displayListNeedsUpdate = FALSE;
+
+ ss->allSnowFlakes = snowFlake = malloc (numFlakes * sizeof (SnowFlake));
+
+ for (i = 0; i < numFlakes; i++)
+ {
+ initiateSnowFlake (ss, snowFlake);
+ setSnowflakeTexture (ss, snowFlake);
+ snowFlake++;
+ }
+
+ updateSnowTextures (s);
+ setupDisplayList (ss);
+
+ WRAP (ss, s, paintOutput, snowPaintOutput);
+ WRAP (ss, s, drawWindow, snowDrawWindow);
+
+ ss->timeoutHandle = compAddTimeout (starGetSnowUpdateDelay (s->display),
+ stepSnowPositions, s);
+
+ return TRUE;
+}
+
+static void
+snowFiniScreen (CompPlugin *p,
+ CompScreen *s)
+{
+ int i;
+
+ SNOW_SCREEN (s);
+
+ if (ss->timeoutHandle)
+ compRemoveTimeout (ss->timeoutHandle);
+
+ for (i = 0; i < ss->snowTexturesLoaded; i++)
+ {
+ finiTexture (s, &ss->snowTex[i].tex);
+ glDeleteLists (ss->snowTex[i].dList, 1);
+ }
+
+ if (ss->snowTex)
+ free (ss->snowTex);
+
+ if (ss->allSnowFlakes)
+ free (ss->allSnowFlakes);
+
+ UNWRAP (ss, s, paintOutput);
+ UNWRAP (ss, s, drawWindow);
+
+ free (ss);
+}
+
+static void
+snowDisplayOptionChanged (CompDisplay *d,
+ CompOption *opt,
+ StarDisplayOptions num)
+{
+ SNOW_DISPLAY (d);
+
+ switch (num)
+ {
+ case StarDisplayOptionSnowSize:
+ {
+ CompScreen *s;
+
+ for (s = d->screens; s; s = s->next)
+ {
+ SNOW_SCREEN (s);
+ ss->displayListNeedsUpdate = TRUE;
+ updateSnowTextures (s);
+ }
+ }
+ break;
+ case StarDisplayOptionSnowUpdateDelay:
+ {
+ CompScreen *s;
+
+ for (s = d->screens; s; s = s->next)
+ {
+ SNOW_SCREEN (s);
+
+ if (ss->timeoutHandle)
+ compRemoveTimeout (ss->timeoutHandle);
+ ss->timeoutHandle =
+ compAddTimeout (starGetSnowUpdateDelay (d),
+ stepSnowPositions, s);
+ }
+ }
+ break;
+ case StarDisplayOptionNumSnowflakes:
+ {
+ CompScreen *s;
+ int i, numFlakes;
+ SnowFlake *snowFlake;
+
+ numFlakes = starGetNumSnowflakes (d);
+ for (s = d->screens; s; s = s->next)
+ {
+ SNOW_SCREEN (s);
+ ss->allSnowFlakes = realloc (ss->allSnowFlakes,
+ numFlakes * sizeof (SnowFlake));
+ snowFlake = ss->allSnowFlakes;
+
+ for (i = 0; i < numFlakes; i++)
+ {
+ initiateSnowFlake (ss, snowFlake);
+ setSnowflakeTexture (ss, snowFlake);
+ snowFlake++;
+ }
+ }
+ }
+ break;
+ case StarDisplayOptionSnowTextures:
+ {
+ CompScreen *s;
+ CompOption *texOpt;
+
+ texOpt = starGetSnowTexturesOption (d);
+
+ sd->snowTexFiles = texOpt->value.list.value;
+ sd->snowTexNFiles = texOpt->value.list.nValue;
+
+ for (s = d->screens; s; s = s->next)
+ updateSnowTextures (s);
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static Bool
+snowInitDisplay (CompPlugin *p,
+ CompDisplay *d)
+{
+ CompOption *texOpt;
+ SnowDisplay *sd;
+
+ if (!checkPluginABI ("core", CORE_ABIVERSION))
+ return FALSE;
+
+ sd = malloc (sizeof (SnowDisplay));
+
+ sd->screenPrivateIndex = allocateScreenPrivateIndex (d);
+ if (sd->screenPrivateIndex < 0)
+ {
+ free (sd);
+ return FALSE;
+ }
+
+ starSetToggleKeyInitiate (d, snowToggle);
+ starSetNumSnowflakesNotify (d, snowDisplayOptionChanged);
+ starSetSnowSizeNotify (d, snowDisplayOptionChanged);
+ starSetSnowUpdateDelayNotify (d, snowDisplayOptionChanged);
+ starSetSnowTexturesNotify (d, snowDisplayOptionChanged);
+
+ texOpt = starGetSnowTexturesOption (d);
+ sd->snowTexFiles = texOpt->value.list.value;
+ sd->snowTexNFiles = texOpt->value.list.nValue;
+
+ d->base.privates[displayPrivateIndex].ptr = sd;
+
+ return TRUE;
+}
+
+static void
+snowFiniDisplay (CompPlugin *p,
+ CompDisplay *d)
+{
+ SNOW_DISPLAY (d);
+
+ freeScreenPrivateIndex (d, sd->screenPrivateIndex);
+ free (sd);
+}
+
+static CompBool
+snowInitObject (CompPlugin *p,
+ CompObject *o)
+{
+ static InitPluginObjectProc dispTab[] = {
+ (InitPluginObjectProc) 0, /* InitCore */
+ (InitPluginObjectProc) snowInitDisplay,
+ (InitPluginObjectProc) snowInitScreen
+ };
+
+ RETURN_DISPATCH (o, dispTab, ARRAY_SIZE (dispTab), TRUE, (p, o));
+}
+
+static void
+snowFiniObject (CompPlugin *p,
+ CompObject *o)
+{
+ static FiniPluginObjectProc dispTab[] = {
+ (FiniPluginObjectProc) 0, /* FiniCore */
+ (FiniPluginObjectProc) snowFiniDisplay,
+ (FiniPluginObjectProc) snowFiniScreen
+ };
+
+ DISPATCH (o, dispTab, ARRAY_SIZE (dispTab), (p, o));
+}
+
+static Bool
+snowInit (CompPlugin *p)
+{
+ displayPrivateIndex = allocateDisplayPrivateIndex ();
+ if (displayPrivateIndex < 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
+snowFini (CompPlugin *p)
+{
+ freeDisplayPrivateIndex (displayPrivateIndex);
+}
+
+CompPluginVTable snowVTable = {
+ "star",
+ 0,
+ snowInit,
+ snowFini,
+ snowInitObject,
+ snowFiniObject,
+ 0,
+ 0
+};
+
+CompPluginVTable*
+getCompPluginInfo (void)
+{
+ return &snowVTable;
+}