new r_stereo modes (horiz and vert split)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10554 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/cl_screen.c b/cl_screen.c
index 3236056d73eb89402f59bd718e82aabae6dcada1..84f23b35fae3cc9477885608015de67b43c40328 100644 (file)
--- a/cl_screen.c
+++ b/cl_screen.c
@@ -61,6 +61,8 @@ cvar_t cl_capturevideo_framestep = {CVAR_SAVE, "cl_capturevideo_framestep", "1",
 cvar_t r_letterbox = {0, "r_letterbox", "0", "reduces vertical height of view to simulate a letterboxed movie effect (can be used by mods for cutscenes)"};
 cvar_t r_stereo_separation = {0, "r_stereo_separation", "4", "separation distance of eyes in the world (negative values are only useful for cross-eyed viewing)"};
 cvar_t r_stereo_sidebyside = {0, "r_stereo_sidebyside", "0", "side by side views for those who can't afford glasses but can afford eye strain (note: use a negative r_stereo_separation if you want cross-eyed viewing)"};
+cvar_t r_stereo_horizontal = {0, "r_stereo_horizontal", "0", "aspect skewed side by side view for special decoder/display hardware"};
+cvar_t r_stereo_vertical = {0, "r_stereo_vertical", "0", "aspect skewed top and bottom view for special decoder/display hardware"};
 cvar_t r_stereo_redblue = {0, "r_stereo_redblue", "0", "red/blue anaglyph stereo glasses (note: most of these glasses are actually red/cyan, try that one too)"};
 cvar_t r_stereo_redcyan = {0, "r_stereo_redcyan", "0", "red/cyan anaglyph stereo glasses, the kind given away at drive-in movies like Creature From The Black Lagoon In 3D"};
 cvar_t r_stereo_redgreen = {0, "r_stereo_redgreen", "0", "red/green anaglyph stereo glasses (for those who don't mind yellow)"};
@@ -909,6 +911,8 @@ void CL_Screen_Init(void)
        Cvar_RegisterVariable (&r_letterbox);
        Cvar_RegisterVariable(&r_stereo_separation);
        Cvar_RegisterVariable(&r_stereo_sidebyside);
+       Cvar_RegisterVariable(&r_stereo_horizontal);
+       Cvar_RegisterVariable(&r_stereo_vertical);
        Cvar_RegisterVariable(&r_stereo_redblue);
        Cvar_RegisterVariable(&r_stereo_redcyan);
        Cvar_RegisterVariable(&r_stereo_redgreen);
@@ -1596,6 +1600,28 @@ void SCR_DrawScreen (void)
                        if (r_stereo_side)
                                r_refdef.view.x += (int)(r_refdef.view.width * 1.5);
                }
+               else if (r_stereo_horizontal.integer)
+               {
+                       r_refdef.view.width = (int)(vid.width * size / 2);
+                       r_refdef.view.height = (int)(vid.height * size * (1 - bound(0, r_letterbox.value, 100) / 100));
+                       r_refdef.view.depth = 1;
+                       r_refdef.view.x = (int)((vid.width - r_refdef.view.width * 2.0)/2);
+                       r_refdef.view.y = (int)((vid.height - r_refdef.view.height)/2);
+                       r_refdef.view.z = 0;
+                       if (r_stereo_side)
+                               r_refdef.view.x += (int)(r_refdef.view.width);
+               }
+               else if (r_stereo_vertical.integer)
+               {
+                       r_refdef.view.width = (int)(vid.width * size);
+                       r_refdef.view.height = (int)(vid.height * size * (1 - bound(0, r_letterbox.value, 100) / 100) / 2);
+                       r_refdef.view.depth = 1;
+                       r_refdef.view.x = (int)((vid.width - r_refdef.view.width)/2);
+                       r_refdef.view.y = (int)((vid.height - r_refdef.view.height * 2.0)/2);
+                       r_refdef.view.z = 0;
+                       if (r_stereo_side)
+                               r_refdef.view.y += (int)(r_refdef.view.height);
+               }
                else
                {
                        r_refdef.view.width = (int)(vid.width * size);
@@ -1645,7 +1671,7 @@ void SCR_DrawScreen (void)
                }
        }
 
-       if (!r_stereo_sidebyside.integer)
+       if (!r_stereo_sidebyside.integer && !r_stereo_horizontal.integer && !r_stereo_vertical.integer)
        {
                r_refdef.view.width = vid.width;
                r_refdef.view.height = vid.height;
@@ -2053,7 +2079,7 @@ qboolean R_Stereo_ColorMasking(void)
 
 qboolean R_Stereo_Active(void)
 {
-       return (vid.stereobuffer || r_stereo_sidebyside.integer || R_Stereo_ColorMasking());
+       return (vid.stereobuffer || r_stereo_sidebyside.integer || r_stereo_horizontal.integer || r_stereo_vertical.integer || R_Stereo_ColorMasking());
 }
 
 extern cvar_t cl_minfps;
@@ -2197,8 +2223,7 @@ void CL_UpdateScreen(void)
                Matrix4x4_CreateFromQuakeEntity(&offsetmatrix, 0, r_stereo_separation.value * 0.5f, 0, 0, r_stereo_angle.value * 0.5f, 0, 1);
                Matrix4x4_Concat(&r_refdef.view.matrix, &originalmatrix, &offsetmatrix);
 
-               if (r_stereo_sidebyside.integer)
-                       r_stereo_side = 0;
+               r_stereo_side = 0;
 
                if (r_stereo_redblue.integer || r_stereo_redgreen.integer || r_stereo_redcyan.integer)
                {
@@ -2215,8 +2240,7 @@ void CL_UpdateScreen(void)
                Matrix4x4_CreateFromQuakeEntity(&offsetmatrix, 0, r_stereo_separation.value * -0.5f, 0, 0, r_stereo_angle.value * -0.5f, 0, 1);
                Matrix4x4_Concat(&r_refdef.view.matrix, &originalmatrix, &offsetmatrix);
 
-               if (r_stereo_sidebyside.integer)
-                       r_stereo_side = 1;
+               r_stereo_side = 1;
 
                if (r_stereo_redblue.integer || r_stereo_redgreen.integer || r_stereo_redcyan.integer)
                {