- split up g_visibility into two variables.

This is preparation for experimenting with the weapon flashes that can be quite annoying with how they brighten distant parts of the level far more than nearby parts.

source/build/include/build.h

@@ -119,7 +119,7 @@ enum {
     PALETTE_TRANSLUC = 1<<2,
 };
 
-EXTERN int32_t g_visibility;
+inline int32_t g_visibility = 512, g_relvisibility = 0;
 
 EXTERN vec2_t windowxy1, windowxy2;
 
@@ -189,8 +189,7 @@ enum {
 EXTERN int32_t enginecompatibility_mode;
 
 
-int32_t    engineInit(void);
-void   engineUnInit(void);
+void engineInit(void);
 
 void   videoSetCorrectedAspect();
 void   videoSetViewableArea(int32_t x1, int32_t y1, int32_t x2, int32_t y2);

source/build/src/engine.cpp

@@ -146,11 +146,7 @@ int32_t animateoffs(int const tilenum, int fakevar)
     return offs;
 }
 
-static int32_t engineLoadTables(void)
-{
-    static char tablesloaded = 0;
-
-    if (tablesloaded == 0)
+void engineInit(void)
 {
     int32_t i;
 
@@ -165,11 +161,6 @@ static int32_t engineLoadTables(void)
         radarang[i] = atan((639.5 - i) / 160.) * (-64. / BAngRadian);
     for (i=0; i<640; i++)
         radarang[1279-i] = -radarang[i];
-
-        tablesloaded = 1;
-    }
-
-    return 0;
 }
 
 //
@@ -342,18 +333,6 @@ const int16_t* getpsky(int32_t picnum, int32_t* dapyscale, int32_t* dapskybits,
     return psky->tileofs;
 }
 
-
-//
-// initengine
-//
-int32_t engineInit(void)
-{
-    engineLoadTables();
-    g_visibility = 512;
-    return 0;
-}
-
-
 //
 // inside
 //

source/build/src/polymost.cpp

@@ -337,7 +337,7 @@ static void polymost_updaterotmat(void)
     multiplyMatrix4f(matrix, tiltmatrix);
     renderSetViewMatrix(matrix);
     float fxdimen = FixedToFloat(xdimenscale);
-    renderSetVisibility(g_visibility * fxdimen * (1.f / (65536.f)) / r_ambientlight);
+    renderSetVisibility((g_visibility + g_relvisibility) * fxdimen * (1.f / (65536.f)) / r_ambientlight);
 }
 
 const vec2_16_t tileSize(int index)

source/core/rendering/scene/hw_drawinfo.cpp

@@ -139,7 +139,7 @@ void HWDrawInfo::StartScene(FRenderViewpoint& parentvp, HWViewpointUniforms* uni
 		VPUniforms.mViewMatrix.loadIdentity();
 		VPUniforms.mNormalViewMatrix.loadIdentity();
 		//VPUniforms.mViewHeight = viewheight;
-		VPUniforms.mGlobVis = (2 / 65536.f) * g_visibility / r_ambientlight;
+		VPUniforms.mGlobVis = (2 / 65536.f) * (isBuildSoftwareLighting()? g_visibility + g_relvisibility : g_visibility) / r_ambientlight;
 		VPUniforms.mPalLightLevels = numshades | (static_cast<int>(gl_fogmode) << 8) | (5 << 16);
 
 		VPUniforms.mClipLine.X = -10000000.0f;

source/core/savegamehelp.cpp

@@ -695,6 +695,7 @@ void SerializeMap(FSerializer& arc)
 			("randomseed", randomseed)
 			("numshades", numshades)	// is this really needed?
 			("visibility", g_visibility)
+			("relvisibility", g_relvisibility)
 			("parallaxtype", parallaxtype)
 			("parallaxyo", parallaxyoffs_override)
 			("parallaxys", parallaxyscale_override)

source/games/blood/src/view.cpp

@@ -739,7 +739,7 @@ void viewDrawScreen(bool sceneonly)
 				break;
 			}
 		}
-		g_visibility = (int32_t)(ClipLow(gVisibility - 32 * gView->visibility - brightness, 0));
+		g_relvisibility = (int32_t)(ClipLow(gVisibility - 32 * gView->visibility - brightness, 0)) - g_visibility;
 		cA += interpolatedangle(buildang(deliriumTurnO), buildang(deliriumTurn), gInterpolate);
 
 		int ceilingZ, floorZ;

source/games/duke/src/actors_lava.cpp

@@ -563,6 +563,7 @@ void thunder(void)
 	{
 		if (testgotpic(RRTILE2577, true))
 		{
+			g_relvisibility = 0;
 			if (krand() > 65000)
 			{
 				thunderflash = 1;

source/games/duke/src/render.cpp

@@ -271,7 +271,8 @@ void displayrooms(int snum, double smoothratio, bool sceneonly)
 		p->visibility = ud.const_visibility;
 	}
 
-	g_visibility = p->visibility;
+	g_visibility = ud.const_visibility;
+	g_relvisibility = p->visibility - ud.const_visibility;
 
 	videoSetCorrectedAspect();
 

source/games/sw/src/draw.cpp

@@ -1450,7 +1450,9 @@ void drawscreen(PLAYER* pp, double smoothratio, bool sceneonly)
     pp->siang = tang.asbuild();
 
     QuakeViewChange(camerapp, &quake_z, &quake_x, &quake_y, &quake_ang);
-    VisViewChange(camerapp, &g_visibility);
+    int vis = g_visibility;
+    VisViewChange(camerapp, &vis);
+    g_relvisibility = vis - g_visibility;
     tz = tz + quake_z;
     tx = tx + quake_x;
     ty = ty + quake_y;