- moved the color/fog setters to hwrenderer.

2018-10-20 23:33:07 +02:00 · 2018-10-20 23:33:07 +02:00 · e8f48e7535
commit e8f48e7535
parent fac7c7a31c
6 changed files with 167 additions and 132 deletions
--- a/src/hwrenderer/scene/hw_renderstate.cpp
+++ b/src/hwrenderer/scene/hw_renderstate.cpp
@ -0,0 +1,155 @@
+// 
+//---------------------------------------------------------------------------
+//
+// Copyright(C) 2000-2018 Christoph Oelckers
+// All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program.  If not, see http://www.gnu.org/licenses/
+//
+//--------------------------------------------------------------------------
+//
+/*
+** hw_renderstate.cpp
+** hardware independent part of render state.
+**
+*/
+
+#include "hw_renderstate.h"
+#include "hw_drawstructs.h"
+#include "hwrenderer/utility/hw_lighting.h"
+#include "hwrenderer/utility/hw_cvars.h"
+
+
+//==========================================================================
+//
+// set current light color
+//
+//==========================================================================
+void FRenderState::SetColor(int sectorlightlevel, int rellight, bool fullbright, const FColormap &cm, float alpha, bool weapon)
+{
+	if (fullbright)
+	{
+		SetColorAlpha(0xffffff, alpha, 0);
+		SetSoftLightLevel(255);
+	}
+	else
+	{
+		int hwlightlevel = hw_CalcLightLevel(sectorlightlevel, rellight, weapon, cm.BlendFactor);
+		PalEntry pe = hw_CalcLightColor(hwlightlevel, cm.LightColor, cm.BlendFactor);
+		SetColorAlpha(pe, alpha, cm.Desaturation);
+		SetSoftLightLevel(hw_ClampLight(sectorlightlevel + rellight), cm.BlendFactor);
+	}
+}
+
+//==========================================================================
+//
+// Lighting stuff 
+//
+//==========================================================================
+
+void FRenderState::SetShaderLight(float level, float olight)
+{
+	const float MAXDIST = 256.f;
+	const float THRESHOLD = 96.f;
+	const float FACTOR = 0.75f;
+
+	if (level > 0)
+	{
+		float lightdist, lightfactor;
+
+		if (olight < THRESHOLD)
+		{
+			lightdist = (MAXDIST / 2) + (olight * MAXDIST / THRESHOLD / 2);
+			olight = THRESHOLD;
+		}
+		else lightdist = MAXDIST;
+
+		lightfactor = 1.f + ((olight / level) - 1.f) * FACTOR;
+		if (lightfactor == 1.f) lightdist = 0.f;	// save some code in the shader
+		SetLightParms(lightfactor, lightdist);
+	}
+	else
+	{
+		SetLightParms(1.f, 0.f);
+	}
+}
+
+
+//==========================================================================
+//
+// Sets the fog for the current polygon
+//
+//==========================================================================
+
+void FRenderState::SetFog(int lightlevel, int rellight, bool fullbright, const FColormap *cmap, bool isadditive)
+{
+	PalEntry fogcolor;
+	float fogdensity;
+
+	if (level.flags&LEVEL_HASFADETABLE)
+	{
+		fogdensity = 70;
+		fogcolor = 0x808080;
+	}
+	else if (cmap != NULL && !fullbright)
+	{
+		fogcolor = cmap->FadeColor;
+		fogdensity = hw_GetFogDensity(lightlevel, fogcolor, cmap->FogDensity, cmap->BlendFactor);
+		fogcolor.a = 0;
+	}
+	else
+	{
+		fogcolor = 0;
+		fogdensity = 0;
+	}
+
+	// Make fog a little denser when inside a skybox
+	//if (GLRenderer->mPortalState.inskybox) fogdensity += fogdensity / 2;
+
+
+	// no fog in enhanced vision modes!
+	if (fogdensity == 0 || gl_fogmode == 0)
+	{
+		EnableFog(false);
+		SetFog(0, 0);
+	}
+	else
+	{
+		if ((level.lightmode == 2 || (level.lightmode == 8 && cmap->BlendFactor > 0)) && fogcolor == 0)
+		{
+			float light = (float)hw_CalcLightLevel(lightlevel, rellight, false, cmap->BlendFactor);
+			SetShaderLight(light, lightlevel);
+		}
+		else
+		{
+			SetLightParms(1.f, 0.f);
+		}
+
+		// For additive rendering using the regular fog color here would mean applying it twice
+		// so always use black
+		if (isadditive)
+		{
+			fogcolor = 0;
+		}
+
+		EnableFog(true);
+		SetFog(fogcolor, fogdensity);
+
+		// Korshun: fullbright fog like in software renderer.
+		if (level.lightmode == 8 && cmap->BlendFactor == 0 && level.brightfog && fogdensity != 0 && fogcolor != 0)
+		{
+			SetSoftLightLevel(255);
+		}
+	}
+}