corrected a misspelling in a comment

[xonotic/darkplaces.git] / cl_screen.c

diff --git a/cl_screen.c b/cl_screen.c
index 164ed0c2e0638283e32c3c741b483c09b55a8e07..e806e45a1ab3f01ebb25284ba061279408009f4c 100644 (file)
--- a/cl_screen.c
+++ b/cl_screen.c
@@ -43,6 +43,7 @@ cvar_t scr_zoomwindow = {CVAR_SAVE, "scr_zoomwindow", "0", "displays a zoomed in
 cvar_t scr_zoomwindow_viewsizex = {CVAR_SAVE, "scr_zoomwindow_viewsizex", "20", "horizontal viewsize of zoom window"};
 cvar_t scr_zoomwindow_viewsizey = {CVAR_SAVE, "scr_zoomwindow_viewsizey", "20", "vertical viewsize of zoom window"};
 cvar_t scr_zoomwindow_fov = {CVAR_SAVE, "scr_zoomwindow_fov", "20", "fov of zoom window"};
+cvar_t scr_stipple = {0, "scr_stipple", "0", "interlacing-like stippling of the display"};
 
 
 int jpeg_supported = false;
@@ -612,6 +613,7 @@ void CL_Screen_Init(void)
        Cvar_RegisterVariable(&scr_zoomwindow_viewsizex);
        Cvar_RegisterVariable(&scr_zoomwindow_viewsizey);
        Cvar_RegisterVariable(&scr_zoomwindow_fov);
+       Cvar_RegisterVariable(&scr_stipple);
 
        Cmd_AddCommand ("sizeup",SCR_SizeUp_f, "increase view size (increases viewsize cvar)");
        Cmd_AddCommand ("sizedown",SCR_SizeDown_f, "decrease view size (decreases viewsize cvar)");
@@ -1614,7 +1616,6 @@ void SCR_UpdateLoadingScreen (void)
        qglColorMask(1,1,1,1);CHECKGLERROR
        //qglClearColor(0,0,0,0);CHECKGLERROR
        //qglClear(GL_COLOR_BUFFER_BIT);CHECKGLERROR
-       //qglCullFace(GL_FRONT);CHECKGLERROR
        //qglDisable(GL_CULL_FACE);CHECKGLERROR
        //R_ClearScreen();
        R_Textures_Frame();
@@ -1740,6 +1741,28 @@ void CL_UpdateScreen(void)
        qglClearColor(0,0,0,0);CHECKGLERROR
        qglClear(GL_COLOR_BUFFER_BIT);CHECKGLERROR
 
+       if(scr_stipple.integer)
+       {
+               GLubyte stipple[128];
+               int i, s, width, parts;
+               static int frame = 0;
+               ++frame;
+
+               s = scr_stipple.integer;
+               parts = (s & 007);
+               width = (s & 070) >> 3;
+
+               qglEnable(GL_POLYGON_STIPPLE); // 0x0B42
+               for(i = 0; i < 128; ++i)
+               {
+                       int line = i/4;
+                       stipple[i] = (((line >> width) + frame) & ((1 << parts) - 1)) ? 0x00 : 0xFF;
+               }
+               qglPolygonStipple(stipple);
+       }
+       else
+               qglDisable(GL_POLYGON_STIPPLE);
+
        if (r_timereport_active)
                R_TimeReport("clear");