this patch adds a number of stereo viewing modes (shutter glasses and video glasses...

[xonotic/darkplaces.git] / gl_backend.c

diff --git a/gl_backend.c b/gl_backend.c
index a06484bc9716c100c479923a3bc6fa12754ea7bb..4632395529a1df91047aae4933b90655ebb1f7fb 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -9,6 +9,11 @@ cvar_t gl_mesh_testarrayelement = {0, "gl_mesh_testarrayelement", "0"};
 cvar_t gl_mesh_testmanualfeeding = {0, "gl_mesh_testmanualfeeding", "0"};
 cvar_t gl_paranoid = {0, "gl_paranoid", "0"};
 cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0"};
+cvar_t r_stereo_separation = {0, "r_stereo_separation", "4"};
+cvar_t r_stereo_sidebyside = {0, "r_stereo_sidebyside", "0"};
+cvar_t r_stereo_redblue = {0, "r_stereo_redblue", "0"};
+cvar_t r_stereo_redcyan = {0, "r_stereo_redcyan", "0"};
+cvar_t r_stereo_redgreen = {0, "r_stereo_redgreen", "0"};
 
 cvar_t r_render = {0, "r_render", "1"};
 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1"};
@@ -206,6 +211,11 @@ void gl_backend_init(void)
 
        Cvar_RegisterVariable(&r_render);
        Cvar_RegisterVariable(&r_waterwarp);
+       Cvar_RegisterVariable(&r_stereo_separation);
+       Cvar_RegisterVariable(&r_stereo_sidebyside);
+       Cvar_RegisterVariable(&r_stereo_redblue);
+       Cvar_RegisterVariable(&r_stereo_redcyan);
+       Cvar_RegisterVariable(&r_stereo_redgreen);
        Cvar_RegisterVariable(&gl_polyblend);
        Cvar_RegisterVariable(&gl_dither);
        Cvar_RegisterVariable(&gl_lockarrays);
@@ -1287,13 +1297,13 @@ showtris:
                        Cvar_Set ("viewsize","30");
                if (scr_viewsize.value > 120)
                        Cvar_Set ("viewsize","120");
-               
+
                // bound field of view
                if (scr_fov.value < 1)
                        Cvar_Set ("fov","1");
                if (scr_fov.value > 170)
                        Cvar_Set ("fov","170");
-       
+
                // intermission is always full screen
                if (cl.intermission)
                {
@@ -1311,12 +1321,12 @@ showtris:
                        size = scr_viewsize.value * (1.0 / 100.0);
                        size = min(size, 1);
                }
-       
+
                r_refdef.width = vid.realwidth * size;
                r_refdef.height = vid.realheight * size;
                r_refdef.x = (vid.realwidth - r_refdef.width)/2;
                r_refdef.y = (vid.realheight - r_refdef.height)/2;
-       
+
                // LordHavoc: viewzoom (zoom in for sniper rifles, etc)
                r_refdef.fov_x = scr_fov.value * cl.viewzoom;
                r_refdef.fov_y = CalcFov (r_refdef.fov_x, r_refdef.width, r_refdef.height);
@@ -1335,23 +1345,85 @@ showtris:
                        }
                }
 
-               R_RenderView();
+               r_refdef.colormask[0] = 1;
+               r_refdef.colormask[1] = 1;
+               r_refdef.colormask[2] = 1;
+
+               if (r_stereo_redblue.integer || r_stereo_redcyan.integer || r_stereo_redgreen.integer)
+               {
+                       matrix4x4_t originalmatrix = r_refdef.viewentitymatrix;
+                       r_refdef.viewentitymatrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][0];
+                       r_refdef.viewentitymatrix.m[1][3] = originalmatrix.m[1][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][1];
+                       r_refdef.viewentitymatrix.m[2][3] = originalmatrix.m[2][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][2];
+
+                       r_refdef.colormask[0] = 1;
+                       r_refdef.colormask[1] = 0;
+                       r_refdef.colormask[2] = 0;
 
-               if (scr_zoomwindow.integer)
+                       R_RenderView();
+
+                       r_refdef.viewentitymatrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][0];
+                       r_refdef.viewentitymatrix.m[1][3] = originalmatrix.m[1][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][1];
+                       r_refdef.viewentitymatrix.m[2][3] = originalmatrix.m[2][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][2];
+
+                       r_refdef.colormask[0] = 0;
+                       r_refdef.colormask[1] = r_stereo_redcyan.integer || r_stereo_redgreen.integer;
+                       r_refdef.colormask[2] = r_stereo_redcyan.integer || r_stereo_redblue.integer;
+
+                       R_RenderView();
+
+                       r_refdef.viewentitymatrix = originalmatrix;
+               }
+               else if (r_stereo_sidebyside.integer)
                {
-                       float sizex = bound(10, scr_zoomwindow_viewsizex.value, 100) / 100.0;
-                       float sizey = bound(10, scr_zoomwindow_viewsizey.value, 100) / 100.0;
-                       r_refdef.width = vid.realwidth * sizex;
-                       r_refdef.height = vid.realheight * sizey;
-                       r_refdef.x = (vid.realwidth - r_refdef.width)/2;
-                       r_refdef.y = 0;
-                       r_refdef.fov_x = scr_zoomwindow_fov.value;
-                       r_refdef.fov_y = CalcFov(r_refdef.fov_x, r_refdef.width, r_refdef.height);
+                       matrix4x4_t originalmatrix = r_refdef.viewentitymatrix;
+                       r_refdef.viewentitymatrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][0];
+                       r_refdef.viewentitymatrix.m[1][3] = originalmatrix.m[1][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][1];
+                       r_refdef.viewentitymatrix.m[2][3] = originalmatrix.m[2][3] + r_stereo_separation.value * -0.5f * r_refdef.viewentitymatrix.m[0][2];
 
+                       r_refdef.width = vid.realwidth * size / 2.5;
+                       r_refdef.height = vid.realheight * size / 2.5;
+                       r_refdef.x = (vid.realwidth - r_refdef.width * 2.5) * 0.5;
+                       r_refdef.y = (vid.realheight - r_refdef.height)/2;
+
+                       R_RenderView();
+
+                       r_refdef.viewentitymatrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][0];
+                       r_refdef.viewentitymatrix.m[1][3] = originalmatrix.m[1][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][1];
+                       r_refdef.viewentitymatrix.m[2][3] = originalmatrix.m[2][3] + r_stereo_separation.value * 0.5f * r_refdef.viewentitymatrix.m[0][2];
+
+                       r_refdef.x = (vid.realwidth - r_refdef.width * 2.5) * 0.5 + r_refdef.width * 1.5;
+               
                        R_RenderView();
+
+                       r_refdef.viewentitymatrix = originalmatrix;
                }
+               else
+               {
+                       R_RenderView();
+
+                       if (scr_zoomwindow.integer)
+                       {
+                               float sizex = bound(10, scr_zoomwindow_viewsizex.value, 100) / 100.0;
+                               float sizey = bound(10, scr_zoomwindow_viewsizey.value, 100) / 100.0;
+                               r_refdef.width = vid.realwidth * sizex;
+                               r_refdef.height = vid.realheight * sizey;
+                               r_refdef.x = (vid.realwidth - r_refdef.width)/2;
+                               r_refdef.y = 0;
+                               r_refdef.fov_x = scr_zoomwindow_fov.value;
+                               r_refdef.fov_y = CalcFov(r_refdef.fov_x, r_refdef.width, r_refdef.height);
+
+                               R_RenderView();
+                       }
+               }
+
+               r_refdef.colormask[0] = 1;
+               r_refdef.colormask[1] = 1;
+               r_refdef.colormask[2] = 1;
        }
 
+       GL_ColorMask(1,1,1,1);
+
        // draw 2D stuff
        R_DrawQueue();