From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / hacks / glx / gleidescope.c

diff --git a/hacks/glx/gleidescope.c b/hacks/glx/gleidescope.c
index dd6533a6779d227c3d38e1e5ebbb4bb696c27e57..7e1d73d049bb17c47f113a0c32d8a6671178cab3 100644 (file)
--- a/hacks/glx/gleidescope.c
+++ b/hacks/glx/gleidescope.c
@@ -77,7 +77,6 @@
                "*useSHM:               True            \n" \
                "*suppressRotationAnimation: True\n" \
 
-# define refresh_gleidescope 0
 # define release_gleidescope 0
 # include "xlockmore.h"                                /* from the xscreensaver distribution */
 #else  /* !STANDALONE */
@@ -183,8 +182,8 @@ ENTRYPOINT ModeSpecOpt gleidescope_opts = {
 #ifdef USE_MODULES
 ModStruct   gleidescope_description = { 
      "gleidescope", "init_gleidescope", "draw_gleidescope", NULL,
-     "draw_gleidescope", "init_gleidescope", NULL, &gleidescope_opts,
-     1000, 1, 2, 1, 4, 1.0, "",
+     "draw_gleidescope", "init_gleidescope", "free_gleidescope",
+     &gleidescope_opts, 1000, 1, 2, 1, 4, 1.0, "",
      "GL Kaleidescope", 0, NULL};
 #endif
 
@@ -1399,9 +1398,17 @@ ENTRYPOINT void reshape_gleidescope(ModeInfo *mi, int width, int height)
        gleidestruct *gp = &gleidescope[MI_SCREEN(mi)];
        GLfloat         h = (GLfloat) height / (GLfloat) width;
 
+    int y = 0;
+
+    if (width > height * 5) {   /* tiny window: show middle */
+      height = width * 9/16;
+      y = -height/2;
+      h = height / (GLfloat) width;
+    }
+
        glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(gp->glx_context));
 
-       glViewport(0, 0, (GLint) width, (GLint) height);
+       glViewport(0, y, (GLint) width, (GLint) height);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(50.0, 1/h, 0.1, 2000.0);
@@ -1525,15 +1532,13 @@ printf("phases [%d, %d, %d]\n", gp->cam_x_phase, gp->cam_y_phase, gp->cam_z_phas
 #endif
 }
 
-static void free_gleidescope(ModeInfo * mi);
-
 ENTRYPOINT void
 init_gleidescope(ModeInfo * mi)
 {
        gleidestruct *gp;
        int screen = MI_SCREEN(mi);
 
-       MI_INIT(mi, gleidescope, free_gleidescope);
+       MI_INIT(mi, gleidescope);
        gp = &gleidescope[screen];
        gp->window = MI_WINDOW(mi);
     gp->size = -1;
@@ -1601,7 +1606,7 @@ draw_gleidescope(ModeInfo * mi)
        }
 }
 
-static void
+ENTRYPOINT void
 free_gleidescope(ModeInfo * mi)
 {
        gleidestruct *gp = &gleidescope[MI_SCREEN(mi)];