Tomaz's gl_polyblend patch to control intensity of view blends

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4161 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_backend.c b/gl_backend.c
index 9ea11dea8fe3d968ec15f6c387b21f05f49918de..ee2411725aa021d15b6ebdc375ebf8ec3167be8c 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -13,6 +13,7 @@ cvar_t gl_printcheckerror = {0, "gl_printcheckerror", "0"};
 
 cvar_t r_render = {0, "r_render", "1"};
 cvar_t r_waterwarp = {CVAR_SAVE, "r_waterwarp", "1"};
+cvar_t gl_polyblend = {CVAR_SAVE, "gl_polyblend", "1"};
 cvar_t gl_dither = {CVAR_SAVE, "gl_dither", "1"}; // whether or not to use dithering
 cvar_t gl_lockarrays = {0, "gl_lockarrays", "1"};
 
@@ -206,6 +207,7 @@ void gl_backend_init(void)
 
        Cvar_RegisterVariable(&r_render);
        Cvar_RegisterVariable(&r_waterwarp);
+       Cvar_RegisterVariable(&gl_polyblend);
        Cvar_RegisterVariable(&gl_dither);
        Cvar_RegisterVariable(&gl_lockarrays);
        Cvar_RegisterVariable(&gl_delayfinish);

diff --git a/menu.c b/menu.c
index 0a1289b13dd5eeac11ec4ed7fcaf8731862d4032..0131729e2aaa4d0bfb8766095efc6348844ade63 100644 (file)
--- a/menu.c
+++ b/menu.c
@@ -1423,7 +1423,7 @@ void M_Options_Key (int k, char ascii)
        }
 }
 
-#define        OPTIONS_EFFECTS_ITEMS   23
+#define        OPTIONS_EFFECTS_ITEMS   24
 
 int options_effects_cursor;
 
@@ -1478,6 +1478,7 @@ void M_Menu_Options_Effects_AdjustSliders (int dir)
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&cl_particles_blood_bloodhack, !cl_particles_blood_bloodhack.integer);
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&r_lerpmodels, !r_lerpmodels.integer);
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&r_lerpsprites, !r_lerpsprites.integer);
+       else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&gl_polyblend, bound(0, gl_polyblend.value + dir * 0.1, 1));
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&r_waterwarp, bound(0, r_waterwarp.value + dir * 0.1, 1));
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&r_wateralpha, bound(0, r_wateralpha.value + dir * 0.1, 1));
        else if (options_effects_cursor == optnum++) Cvar_SetValueQuick (&r_waterscroll, bound(0, r_waterscroll.value + dir * 0.5, 10));
@@ -1519,6 +1520,7 @@ void M_Options_Effects_Draw (void)
        M_Options_PrintCheckbox("Force New Blood Effect", true, cl_particles_blood_bloodhack.integer);
        M_Options_PrintCheckbox("   Model Interpolation", true, r_lerpmodels.integer);
        M_Options_PrintCheckbox("  Sprite Interpolation", true, r_lerpsprites.integer);
+       M_Options_PrintSlider(  "            View Blend", true, gl_polyblend.value, 0, 1);
        M_Options_PrintSlider(  "  Underwater View Warp", true, r_waterwarp.value, 0, 1);
        M_Options_PrintSlider(  " Water Alpha (opacity)", true, r_wateralpha.value, 0, 1);
        M_Options_PrintSlider(  "        Water Movement", true, r_waterscroll.value, 0, 10);

diff --git a/render.h b/render.h
index c669cd474b315177a5fb47323024a3d75cc35ac6..339333ae0864306390786839ff59e797c883de54 100644 (file)
--- a/render.h
+++ b/render.h
@@ -155,6 +155,7 @@ extern cvar_t r_render;
 extern cvar_t r_waterwarp;
 
 extern cvar_t r_textureunits;
+extern cvar_t gl_polyblend;
 extern cvar_t gl_dither;
 
 #include "gl_backend.h"

diff --git a/view.c b/view.c
index bb713d8bd3c31412b5d2b5c6d0526680d967e221..cca802147246dbe6142b54d779f39a6215849745 100644 (file)
--- a/view.c
+++ b/view.c
@@ -442,7 +442,7 @@ void V_CalcViewBlend(void)
        r_refdef.viewblend[1] = 0;
        r_refdef.viewblend[2] = 0;
        r_refdef.viewblend[3] = 0;
-       if (cls.state == ca_connected && cls.signon == SIGNONS)
+       if (cls.state == ca_connected && cls.signon == SIGNONS && gl_polyblend.value > 0)
        {
                // set contents color
                switch (CL_PointQ1Contents(r_vieworigin))
@@ -519,7 +519,7 @@ void V_CalcViewBlend(void)
                        if (a2 > 0)
                        {
                                VectorLerp(r_refdef.viewblend, a2, cl.cshifts[j].destcolor, r_refdef.viewblend);
-                               r_refdef.viewblend[3] = 1 - (1 - r_refdef.viewblend[3]) * (1 - a2); // correct alpha multiply...  took a while to find it on the web
+                               r_refdef.viewblend[3] = (1 - (1 - r_refdef.viewblend[3]) * (1 - a2)); // correct alpha multiply...  took a while to find it on the web
                        }
                }
                // saturate color (to avoid blending in black)
@@ -532,7 +532,7 @@ void V_CalcViewBlend(void)
                r_refdef.viewblend[0] = bound(0.0f, r_refdef.viewblend[0] * (1.0f/255.0f), 1.0f);
                r_refdef.viewblend[1] = bound(0.0f, r_refdef.viewblend[1] * (1.0f/255.0f), 1.0f);
                r_refdef.viewblend[2] = bound(0.0f, r_refdef.viewblend[2] * (1.0f/255.0f), 1.0f);
-               r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3]                , 1.0f);
+               r_refdef.viewblend[3] = bound(0.0f, r_refdef.viewblend[3] * gl_polyblend.value, 1.0f);
        }
 }