added vid_stereobuffer cvar based on patch from syschuck on the alientrap forums

[xonotic/darkplaces.git] / cl_screen.c

diff --git a/cl_screen.c b/cl_screen.c
index 24421a2880a5afc509744d2eb902eb823ac6aa99..c01168507eb5803efd58c39a79da772fcd1f58f9 100644 (file)
--- a/cl_screen.c
+++ b/cl_screen.c
@@ -1642,7 +1642,18 @@ void SCR_UpdateLoadingScreen (void)
        texcoord2f[2] = 1;texcoord2f[3] = 0;
        texcoord2f[4] = 1;texcoord2f[5] = 1;
        texcoord2f[6] = 0;texcoord2f[7] = 1;
-       R_Mesh_Draw(0, 4, 2, polygonelements);
+       if (vid.stereobuffer)
+       {
+               qglDrawBuffer(GL_BACK_LEFT);
+               R_Mesh_Draw(0, 4, 2, polygonelements);
+               qglDrawBuffer(GL_BACK_RIGHT);
+               R_Mesh_Draw(0, 4, 2, polygonelements);
+       }
+       else
+       {
+               qglDrawBuffer(GL_BACK);
+               R_Mesh_Draw(0, 4, 2, polygonelements);
+       }
        R_Mesh_Finish();
        // refresh
        VID_Finish(false);
@@ -1732,7 +1743,7 @@ void CL_UpdateScreen(void)
        if (r_timereport_active)
                R_TimeReport("clear");
 
-       if (r_stereo_redblue.integer || r_stereo_redgreen.integer || r_stereo_redcyan.integer || r_stereo_sidebyside.integer)
+       if (vid.stereobuffer || r_stereo_redblue.integer || r_stereo_redgreen.integer || r_stereo_redcyan.integer || r_stereo_sidebyside.integer)
        {
                matrix4x4_t originalmatrix = r_view.matrix;
                r_view.matrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * -0.5f * r_view.matrix.m[0][1];
@@ -1749,6 +1760,9 @@ void CL_UpdateScreen(void)
                        r_view.colormask[2] = 0;
                }
 
+               if (vid.stereobuffer)
+                       qglDrawBuffer(GL_BACK_RIGHT);
+
                SCR_DrawScreen();
 
                r_view.matrix.m[0][3] = originalmatrix.m[0][3] + r_stereo_separation.value * 0.5f * r_view.matrix.m[0][1];
@@ -1765,12 +1779,18 @@ void CL_UpdateScreen(void)
                        r_view.colormask[2] = r_stereo_redcyan.integer || r_stereo_redblue.integer;
                }
 
+               if (vid.stereobuffer)
+                       qglDrawBuffer(GL_BACK_LEFT);
+
                SCR_DrawScreen();
 
                r_view.matrix = originalmatrix;
        }
        else
+       {
+               qglDrawBuffer(GL_BACK);
                SCR_DrawScreen();
+       }
 
        SCR_CaptureVideo();