- Backend update from GZDoom.

source/common/fonts/font.cpp

@@ -422,7 +422,7 @@ void FFont::ReadSheetFont(TArray<FolderEntry> &folderdata, int width, int height
 				{
 					for (int x = 0; x < numtex_x; x++)
 					{
-						auto image = new FSheetTexture(sheetBitmaps.Size() - 1, x * width, y * width, width, height);
+						auto image = new FSheetTexture(sheetBitmaps.Size() - 1, x * width, y * height, width, height);
 						FImageTexture *imgtex = new FImageTexture(image);
 						auto gtex = MakeGameTexture(imgtex, nullptr, ETextureType::FontChar);
 						gtex->SetWorldPanning(true);

source/common/rendering/gl/gl_shader.cpp

@@ -235,6 +235,8 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
 			float uClipHeight;
 			float uClipHeightDirection;
 			int uShadowmapFilter;
+			
+			int uLightBlendMode;
 		};
 
 		uniform int uTextureMode;
@@ -328,6 +330,7 @@ bool FShader::Load(const char * name, const char * vert_prog_lump, const char *
 		uniform sampler2D texture9;
 		uniform sampler2D texture10;
 		uniform sampler2D texture11;
+		uniform sampler2D texture12;
 
 		// timer data
 		uniform float timer;

source/common/rendering/hwrenderer/data/hw_viewpointbuffer.cpp

@@ -91,6 +91,7 @@ void HWViewpointBuffer::Set2D(FRenderState &di, int width, int height, int pll)
 	matrices.mPalLightLevels = pll;
 	matrices.mClipLine.X = -10000000.0f;
 	matrices.mShadowmapFilter = gl_shadowmap_filter;
+	matrices.mLightBlendMode = 0;
 
 	matrices.mProjectionMatrix.ortho(0, (float)width, (float)height, 0, -1.0f, 1.0f);
 	matrices.CalcDependencies();

source/common/rendering/hwrenderer/data/hw_viewpointuniforms.h

@@ -4,6 +4,15 @@
 
 struct HWDrawInfo;
 
+enum class ELightBlendMode : uint8_t
+{
+	CLAMP = 0,
+	CLAMP_COLOR = 1,
+	NOCLAMP = 2,
+
+	DEFAULT = CLAMP,
+};
+
 struct HWViewpointUniforms
 {
 	VSMatrix mProjectionMatrix;
@@ -19,6 +28,8 @@ struct HWViewpointUniforms
 	float mClipHeightDirection = 0.f;
 	int mShadowmapFilter = 1;
 
+	int mLightBlendMode = 0;
+
 	void CalcDependencies()
 	{
 		mNormalViewMatrix.computeNormalMatrix(mViewMatrix);

source/common/rendering/hwrenderer/postprocessing/hw_postprocess.cpp

@@ -570,7 +570,8 @@ void PPColormap::Render(PPRenderState *renderstate, int fixedcm, float flash)
 
 void PPTonemap::UpdateTextures()
 {
-	if (gl_tonemap == Palette && !PaletteTexture.Data)
+	// level.info->tonemap cannot be ETonemapMode::Palette, so it's fine to only check gl_tonemap here
+	if (ETonemapMode((int)gl_tonemap) == ETonemapMode::Palette && !PaletteTexture.Data)
 	{
 		std::shared_ptr<void> data(new uint32_t[512 * 512], [](void *p) { delete[](uint32_t*)p; });
 
@@ -598,7 +599,9 @@ void PPTonemap::UpdateTextures()
 
 void PPTonemap::Render(PPRenderState *renderstate)
 {
-	if (gl_tonemap == 0)
+	ETonemapMode current_tonemap = (level_tonemap != ETonemapMode::None) ? level_tonemap : ETonemapMode((int)gl_tonemap);
+
+	if (current_tonemap == ETonemapMode::None)
 	{
 		return;
 	}
@@ -606,14 +609,14 @@ void PPTonemap::Render(PPRenderState *renderstate)
 	UpdateTextures();
 
 	PPShader *shader = nullptr;
-	switch (gl_tonemap)
+	switch (current_tonemap)
 	{
 	default:
-	case Linear:		shader = &LinearShader; break;
-	case Reinhard:		shader = &ReinhardShader; break;
-	case HejlDawson:	shader = &HejlDawsonShader; break;
-	case Uncharted2:	shader = &Uncharted2Shader; break;
-	case Palette:		shader = &PaletteShader; break;
+	case ETonemapMode::Linear:		shader = &LinearShader; break;
+	case ETonemapMode::Reinhard:		shader = &ReinhardShader; break;
+	case ETonemapMode::HejlDawson:	shader = &HejlDawsonShader; break;
+	case ETonemapMode::Uncharted2:	shader = &Uncharted2Shader; break;
+	case ETonemapMode::Palette:		shader = &PaletteShader; break;
 	}
 
 	renderstate->PushGroup("tonemap");
@@ -622,7 +625,7 @@ void PPTonemap::Render(PPRenderState *renderstate)
 	renderstate->Shader = shader;
 	renderstate->Viewport = screen->mScreenViewport;
 	renderstate->SetInputCurrent(0);
-	if (gl_tonemap == Palette)
+	if (current_tonemap == ETonemapMode::Palette)
 		renderstate->SetInputTexture(1, &PaletteTexture);
 	renderstate->SetOutputNext();
 	renderstate->SetNoBlend();

source/common/rendering/hwrenderer/postprocessing/hw_postprocess.h

@@ -13,6 +13,19 @@ typedef IntRect PPViewport;
 class PPTexture;
 class PPShader;
 
+enum class ETonemapMode : uint8_t
+{
+	None,
+	Uncharted2,
+	HejlDawson,
+	Reinhard,
+	Linear,
+	Palette,
+	NumTonemapModes
+};
+
+
+
 enum class PPFilterMode { Nearest, Linear };
 enum class PPWrapMode { Clamp, Repeat };
 enum class PPTextureType { CurrentPipelineTexture, NextPipelineTexture, PPTexture, SceneColor, SceneFog, SceneNormal, SceneDepth, SwapChain, ShadowMap };
@@ -541,6 +554,7 @@ private:
 class PPTonemap
 {
 public:
+	void SetTonemapMode(ETonemapMode tm) { level_tonemap = tm; }
 	void Render(PPRenderState *renderstate);
 	void ClearTonemapPalette() { PaletteTexture = {}; }
 
@@ -554,17 +568,7 @@ private:
 	PPShader HejlDawsonShader = { "shaders/pp/tonemap.fp", "#define HEJLDAWSON\n", {} };
 	PPShader Uncharted2Shader = { "shaders/pp/tonemap.fp", "#define UNCHARTED2\n", {} };
 	PPShader PaletteShader = { "shaders/pp/tonemap.fp", "#define PALETTE\n", {} };
-
-	enum TonemapMode
-	{
-		None,
-		Uncharted2,
-		HejlDawson,
-		Reinhard,
-		Linear,
-		Palette,
-		NumTonemapModes
-	};
+	ETonemapMode level_tonemap = ETonemapMode::None;
 };
 
 /////////////////////////////////////////////////////////////////////////////
@@ -840,8 +844,11 @@ public:
 	PPCustomShaders customShaders;
 
 
+	void SetTonemapMode(ETonemapMode tm) { tonemap.SetTonemapMode(tm); }
 	void Pass1(PPRenderState *state, int fixedcm, int sceneWidth, int sceneHeight);
 	void Pass2(PPRenderState* state, int fixedcm, float flash, int sceneWidth, int sceneHeight);
 };
 
+
 extern Postprocess hw_postprocess;
+

source/common/rendering/vulkan/shaders/vk_shader.cpp

@@ -175,6 +175,8 @@ static const char *shaderBindings = R"(
 		float uClipHeight;
 		float uClipHeightDirection;
 		int uShadowmapFilter;
+		
+		int uLightBlendMode;
 	};
 
 	layout(set = 1, binding = 1, std140) uniform MatricesUBO {
@@ -244,6 +246,7 @@ static const char *shaderBindings = R"(
 	layout(set = 2, binding = 8) uniform sampler2D texture9;
 	layout(set = 2, binding = 9) uniform sampler2D texture10;
 	layout(set = 2, binding = 10) uniform sampler2D texture11;
+	layout(set = 2, binding = 11) uniform sampler2D texture12;
 
 	// This must match the PushConstants struct
 	layout(push_constant) uniform PushConstants

source/common/scripting/core/maps.cpp

@@ -438,10 +438,12 @@ template<typename I> void MapIteratorSetValue(I * self, expand_types_vm<typename
         PARAM_SELF_STRUCT_PROLOGUE( FMapIterator_I32_Str ); \
         ACTION_RETURN_INT( MapIteratorGetKey(self) ); \
     } \
-    DEFINE_ACTION_FUNCTION_NATIVE( FMapIterator_I32_Str , GetValue , MapIteratorGetValue< FMapIterator_I32_Str > ) \
+    DEFINE_ACTION_FUNCTION_NATIVE( FMapIterator_I32_Str , GetValue , MapIteratorGetValueString< FMapIterator_I32_Str > ) \
     { \
         PARAM_SELF_STRUCT_PROLOGUE( FMapIterator_I32_Str ); \
-        ACTION_RETURN_STRING( MapIteratorGetValue(self) ); \
+        FString out; \
+        MapIteratorGetValueString(self , out); \
+        ACTION_RETURN_STRING( out ); \
     }
 
 #define DEF_MAP_IT_S_S() \

source/common/textures/hw_material.cpp

@@ -133,12 +133,15 @@ FMaterial::FMaterial(FGameTexture * tx, int scaleflags)
 			if (index >= FIRST_USER_SHADER)
 			{
 				const UserShaderDesc& usershader = usershaders[index - FIRST_USER_SHADER];
-				if (tx->Layers && usershader.shaderType == mShaderIndex) // Only apply user shader if it matches the expected material
+				if (usershader.shaderType == mShaderIndex) // Only apply user shader if it matches the expected material
 				{
-					for (auto& texture : tx->Layers->CustomShaderTextures)
+					if (tx->Layers)
 					{
-						if (texture == nullptr) continue;
-						mTextureLayers.Push({ texture.get(), 0 });	// scalability should be user-definable.
+						for (auto& texture : tx->Layers->CustomShaderTextures)
+						{
+							if (texture == nullptr) continue;
+							mTextureLayers.Push({ texture.get(), 0 });	// scalability should be user-definable.
+						}
 					}
 					mShaderIndex = index;
 				}

source/common/utility/palette.cpp

@@ -418,19 +418,34 @@ void MakeRemap(uint32_t* BaseColors, const uint32_t* colors, uint8_t* remap, con
 // color, so find a duplicate pair of palette entries, make one of them a
 // duplicate of color 0, and remap every graphic so that it uses that entry
 // instead of entry 0.
-void MakeGoodRemap(uint32_t* BaseColors, uint8_t* Remap)
+void MakeGoodRemap(uint32_t* BaseColors, uint8_t* Remap, const uint8_t* lastcolormap)
 {
 	for (int i = 0; i < 256; i++) Remap[i] = i;
 	PalEntry color0 = BaseColors[0];
 	int i;
 
+
 	// First try for an exact match of color 0. Only Hexen does not have one.
-	for (i = 1; i < 256; ++i)
+	if (!lastcolormap)
 	{
-		if (BaseColors[i] == color0)
+		for (i = 1; i < 256; ++i)
 		{
-			Remap[0] = i;
-			break;
+			if (BaseColors[i] == color0)
+			{
+				Remap[0] = i;
+				break;
+			}
+		}
+	}
+	else
+	{
+		for (i = 1; i < 256; ++i)
+		{
+			if ((BaseColors[i] == color0) && (lastcolormap[i] == lastcolormap[0]))
+			{
+				Remap[0] = i;
+				break;
+			}
 		}
 	}
 
@@ -448,21 +463,44 @@ void MakeGoodRemap(uint32_t* BaseColors, uint8_t* Remap)
 			sortcopy[i] = (BaseColors[i] & 0xffffff) | (i << 24);
 		}
 		qsort(sortcopy, 256, 4, sortforremap);
-		for (i = 255; i > 0; --i)
+		if (!lastcolormap)
 		{
-			if ((sortcopy[i] & 0xFFFFFF) == (sortcopy[i - 1] & 0xFFFFFF))
+			for (i = 255; i > 0; --i)
 			{
-				int new0 = sortcopy[i].a;
-				int dup = sortcopy[i - 1].a;
-				if (new0 > dup)
+				if ((sortcopy[i] & 0xFFFFFF) == (sortcopy[i - 1] & 0xFFFFFF))
 				{
-					// Make the lower-numbered entry a copy of color 0. (Just because.)
-					std::swap(new0, dup);
+					int new0 = sortcopy[i].a;
+					int dup = sortcopy[i - 1].a;
+					if (new0 > dup)
+					{
+						// Make the lower-numbered entry a copy of color 0. (Just because.)
+						std::swap(new0, dup);
+					}
+					Remap[0] = new0;
+					Remap[new0] = dup;
+					BaseColors[new0] = color0;
+					break;
+				}
+			}
+		}
+		else
+		{
+			for (i = 255; i > 0; --i)
+			{
+				if (((sortcopy[i] & 0xFFFFFF) == (sortcopy[i - 1] & 0xFFFFFF)) && (lastcolormap[sortcopy[i].a] == lastcolormap[sortcopy[i - 1].a]))
+				{
+					int new0 = sortcopy[i].a;
+					int dup = sortcopy[i - 1].a;
+					if (new0 > dup)
+					{
+						// Make the lower-numbered entry a copy of color 0. (Just because.)
+						std::swap(new0, dup);
+					}
+					Remap[0] = new0;
+					Remap[new0] = dup;
+					BaseColors[new0] = color0;
+					break;
 				}
-				Remap[0] = new0;
-				Remap[new0] = dup;
-				BaseColors[new0] = color0;
-				break;
 			}
 		}
 	}

source/common/utility/palutil.h

@@ -14,7 +14,7 @@ void DoBlending(const PalEntry* from, PalEntry* to, int count, int r, int g, int
 // Given an array of colors, fills in remap with values to remap the
 // passed array of colors to BaseColors. Used for loading palette downconversions of PNGs.
 void MakeRemap(uint32_t* BaseColors, const uint32_t* colors, uint8_t* remap, const uint8_t* useful, int numcolors);
-void MakeGoodRemap(uint32_t* BaseColors, uint8_t* Remap);
+void MakeGoodRemap(uint32_t* BaseColors, uint8_t* Remap, const uint8_t* cmapdata = nullptr);
 
 // Colorspace conversion RGB <-> HSV
 void RGBtoHSV (float r, float g, float b, float *h, float *s, float *v);

source/core/rendering/scene/hw_drawinfo.cpp

@@ -250,6 +250,7 @@ void HWDrawInfo::SetupView(FRenderState &state, float vx, float vy, float vz, bo
 	SetViewMatrix(vp.HWAngles, vx, vy, vz, mirror, planemirror);
 	SetCameraPos(vp.Pos);
 	VPUniforms.CalcDependencies();
+	VPUniforms.mLightBlendMode = 0;
 	vpIndex = screen->mViewpoints->SetViewpoint(state, &VPUniforms);
 }
 

wadsrc/static/shaders/glsl/main.fp

@@ -325,7 +325,7 @@ float R_DoomLightingEquation(float light)
 		// This is a lot more primitive than Doom's lighting...
 		float numShades = float(uPalLightLevels & 255);
 		float curshade = (1.0 - light) * (numShades - 1.0);
-		float visibility = max(uGlobVis * uLightFactor * abs(z), 0.0);
+		float visibility = max(uGlobVis * uLightFactor * z, 0.0);
 		float shade = clamp((curshade + visibility), 0.0, numShades - 1.0);
 		return clamp(shade * uLightDist, 0.0, 1.0);
 	}
@@ -344,10 +344,86 @@ float R_DoomLightingEquation(float light)
 
 //===========================================================================
 //
-// Check if light is in shadow according to its 1D shadow map
+// Check if light is in shadow
 //
 //===========================================================================
 
+#ifdef SUPPORTS_RAYTRACING
+
+bool traceHit(vec3 origin, vec3 direction, float dist)
+{
+	rayQueryEXT rayQuery;
+	rayQueryInitializeEXT(rayQuery, TopLevelAS, gl_RayFlagsTerminateOnFirstHitEXT, 0xFF, origin, 0.01f, direction, dist);
+	while(rayQueryProceedEXT(rayQuery)) { }
+	return rayQueryGetIntersectionTypeEXT(rayQuery, true) != gl_RayQueryCommittedIntersectionNoneEXT;
+}
+
+vec2 softshadow[9 * 3] = vec2[](
+	vec2( 0.0, 0.0),
+	vec2(-2.0,-2.0),
+	vec2( 2.0, 2.0),
+	vec2( 2.0,-2.0),
+	vec2(-2.0, 2.0),
+	vec2(-1.0,-1.0),
+	vec2( 1.0, 1.0),
+	vec2( 1.0,-1.0),
+	vec2(-1.0, 1.0),
+
+	vec2( 0.0, 0.0),
+	vec2(-1.5,-1.5),
+	vec2( 1.5, 1.5),
+	vec2( 1.5,-1.5),
+	vec2(-1.5, 1.5),
+	vec2(-0.5,-0.5),
+	vec2( 0.5, 0.5),
+	vec2( 0.5,-0.5),
+	vec2(-0.5, 0.5),
+
+	vec2( 0.0, 0.0),
+	vec2(-1.25,-1.75),
+	vec2( 1.75, 1.25),
+	vec2( 1.25,-1.75),
+	vec2(-1.75, 1.75),
+	vec2(-0.75,-0.25),
+	vec2( 0.25, 0.75),
+	vec2( 0.75,-0.25),
+	vec2(-0.25, 0.75)
+);
+
+float shadowAttenuation(vec4 lightpos, float lightcolorA)
+{
+	float shadowIndex = abs(lightcolorA) - 1.0;
+	if (shadowIndex >= 1024.0)
+		return 1.0; // Don't cast rays for this light
+
+	vec3 origin = pixelpos.xzy;
+	vec3 target = lightpos.xzy + 0.01; // nudge light position slightly as Doom maps tend to have their lights perfectly aligned with planes
+
+	vec3 direction = normalize(target - origin);
+	float dist = distance(origin, target);
+
+	if (uShadowmapFilter <= 0)
+	{
+		return traceHit(origin, direction, dist) ? 0.0 : 1.0;
+	}
+	else
+	{
+		vec3 v = (abs(direction.x) > abs(direction.y)) ? vec3(0.0, 1.0, 0.0) : vec3(1.0, 0.0, 0.0);
+		vec3 xdir = normalize(cross(direction, v));
+		vec3 ydir = cross(direction, xdir);
+
+		float sum = 0.0;
+		int step_count = uShadowmapFilter * 9;
+		for (int i = 0; i <= step_count; i++)
+		{
+			vec3 pos = target + xdir * softshadow[i].x + ydir * softshadow[i].y;
+			sum += traceHit(origin, normalize(pos - origin), dist) ? 0.0 : 1.0;
+		}
+		return sum / step_count;
+	}
+}
+
+#else
 #ifdef SUPPORTS_SHADOWMAPS
 
 float shadowDirToU(vec2 dir)
@@ -491,6 +567,7 @@ float shadowAttenuation(vec4 lightpos, float lightcolorA)
 	return 1.0;
 }
 
+#endif
 #endif
 
 float spotLightAttenuation(vec4 lightpos, vec3 spotdir, float lightCosInnerAngle, float lightCosOuterAngle)

wadsrc/static/shaders/glsl/main.vp

@@ -5,11 +5,15 @@ layout(location = 2) in vec4 aColor;
 
 layout(location = 0) out vec4 vTexCoord;
 layout(location = 1) out vec4 vColor;
+layout(location = 9) out vec3 vLightmap;
 
 #ifndef SIMPLE	// we do not need these for simple shaders
 layout(location = 3) in vec4 aVertex2;
 layout(location = 4) in vec4 aNormal;
 layout(location = 5) in vec4 aNormal2;
+layout(location = 6) in vec3 aLightmap;
+layout(location = 7) in vec4 aBoneWeight;
+layout(location = 8) in uvec4 aBoneSelector;
 
 layout(location = 2) out vec4 pixelpos;
 layout(location = 3) out vec3 glowdist;
@@ -23,6 +27,14 @@ layout(location = 7) out vec4 ClipDistanceA;
 layout(location = 8) out vec4 ClipDistanceB;
 #endif
 
+struct BonesResult
+{
+	vec3 Normal;
+	vec4 Position;
+};
+
+BonesResult ApplyBones();
+
 void main()
 {
 	float ClipDistance0, ClipDistance1, ClipDistance2, ClipDistance3, ClipDistance4;
@@ -30,9 +42,11 @@ void main()
 	vec2 parmTexCoord;
 	vec4 parmPosition;
 
-	parmTexCoord = aTexCoord;
-	parmPosition = aPosition;
+	BonesResult bones = ApplyBones();
 
+	parmTexCoord = aTexCoord;
+	parmPosition = bones.Position;
+	
 	#ifndef SIMPLE
 		vec4 worldcoord = ModelMatrix * mix(parmPosition, aVertex2, uInterpolationFactor);
 	#else
@@ -51,6 +65,8 @@ void main()
 	#endif
 
 	#ifndef SIMPLE
+		vLightmap = aLightmap;
+
 		pixelpos.xyz = worldcoord.xyz;
 		pixelpos.w = -eyeCoordPos.z/eyeCoordPos.w;
 
@@ -78,14 +94,7 @@ void main()
 			ClipDistance4 = worldcoord.y - ((uSplitBottomPlane.w + uSplitBottomPlane.x * worldcoord.x + uSplitBottomPlane.y * worldcoord.z) * uSplitBottomPlane.z);
 		}
 
-		#ifdef HAS_UNIFORM_VERTEX_DATA
-			if ((useVertexData & 2) == 0)
-				vWorldNormal = NormalModelMatrix * vec4(normalize(uVertexNormal.xyz), 1.0);
-			else
-				vWorldNormal = NormalModelMatrix * vec4(normalize(mix(aNormal.xyz, aNormal2.xyz, uInterpolationFactor)), 1.0);
-		#else
-			vWorldNormal = NormalModelMatrix * vec4(normalize(mix(aNormal.xyz, aNormal2.xyz, uInterpolationFactor)), 1.0);
-		#endif
+		vWorldNormal = NormalModelMatrix * vec4(normalize(bones.Normal), 1.0);
 		vEyeNormal = NormalViewMatrix * vec4(normalize(vWorldNormal.xyz), 1.0);
 	#endif
 
@@ -142,3 +151,66 @@ void main()
 
 	gl_PointSize = 1.0;
 }
+
+#if !defined(SIMPLE)
+vec3 GetAttrNormal()
+{
+	#ifdef HAS_UNIFORM_VERTEX_DATA
+		if ((useVertexData & 2) == 0)
+			return uVertexNormal.xyz;
+		else
+			return mix(aNormal.xyz, aNormal2.xyz, uInterpolationFactor);
+	#else
+		return mix(aNormal.xyz, aNormal2.xyz, uInterpolationFactor);
+	#endif
+}
+
+void AddWeightedBone(uint boneIndex, float weight, inout vec4 position, inout vec3 normal)
+{
+	if (weight != 0.0)
+	{
+		mat4 transform = bones[uBoneIndexBase + int(boneIndex)];
+		mat3 rotation = mat3(transform);
+		position += (transform * aPosition) * weight;
+		normal += (rotation * aNormal.xyz) * weight;
+	}
+}
+
+BonesResult ApplyBones()
+{
+	BonesResult result;
+	if (uBoneIndexBase >= 0 && aBoneWeight != vec4(0.0))
+	{
+		result.Position = vec4(0.0);
+		result.Normal = vec3(0.0);
+
+		// We use low precision input for our bone weights. Rescale so the sum still is 1.0
+		float totalWeight = aBoneWeight.x + aBoneWeight.y + aBoneWeight.z + aBoneWeight.w;
+		float weightMultiplier = 1.0 / totalWeight;
+		vec4 boneWeight = aBoneWeight * weightMultiplier;
+
+		AddWeightedBone(aBoneSelector.x, boneWeight.x, result.Position, result.Normal);
+		AddWeightedBone(aBoneSelector.y, boneWeight.y, result.Position, result.Normal);
+		AddWeightedBone(aBoneSelector.z, boneWeight.z, result.Position, result.Normal);
+		AddWeightedBone(aBoneSelector.w, boneWeight.w, result.Position, result.Normal);
+
+		result.Position.w = 1.0; // For numerical stability
+	}
+	else
+	{
+		result.Position = aPosition;
+		result.Normal = GetAttrNormal();
+	}
+	return result;
+}
+
+#else
+
+BonesResult ApplyBones()
+{
+	BonesResult result;
+	result.Position = aPosition;
+	return result;
+}
+
+#endif

wadsrc/static/shaders/glsl/material_normal.fp

@@ -59,7 +59,21 @@ vec3 ProcessMaterialLight(Material material, vec3 color)
 		}
 	}
 
-	vec3 frag = material.Base.rgb * clamp(color + desaturate(dynlight).rgb, 0.0, 1.4);
+	vec3 frag;
+
+	if ( uLightBlendMode == 1 )
+	{	// COLOR_CORRECT_CLAMPING 
+		vec3 lightcolor = color + desaturate(dynlight).rgb;
+		frag = material.Base.rgb * ((lightcolor / max(max(max(lightcolor.r, lightcolor.g), lightcolor.b), 1.4) * 1.4));
+	}
+	else if ( uLightBlendMode == 2 )
+	{	// UNCLAMPED 
+		frag = material.Base.rgb * (color + desaturate(dynlight).rgb);
+	}
+	else
+	{
+		frag = material.Base.rgb * clamp(color + desaturate(dynlight).rgb, 0.0, 1.4);
+	}
 
 	if (uLightIndex >= 0)
 	{

wadsrc/static/shaders/glsl/material_specular.fp

@@ -66,9 +66,25 @@ vec3 ProcessMaterialLight(Material material, vec3 color)
 			}
 		}
 	}
+	
+	if ( uLightBlendMode == 1 )
+	{	// COLOR_CORRECT_CLAMPING 
+		dynlight.rgb = color + desaturate(dynlight).rgb;
+		specular.rgb = desaturate(specular).rgb;
 
-	dynlight.rgb = clamp(color + desaturate(dynlight).rgb, 0.0, 1.4);
-	specular.rgb = clamp(desaturate(specular).rgb, 0.0, 1.4);
+		dynlight.rgb = ((dynlight.rgb / max(max(max(dynlight.r, dynlight.g), dynlight.b), 1.4) * 1.4));
+		specular.rgb = ((specular.rgb / max(max(max(specular.r, specular.g), specular.b), 1.4) * 1.4));
+	}
+	else if ( uLightBlendMode == 2 )
+	{	// UNCLAMPED 
+		dynlight.rgb = color + desaturate(dynlight).rgb;
+		specular.rgb = desaturate(specular).rgb;
+	}
+	else
+	{
+		dynlight.rgb = clamp(color + desaturate(dynlight).rgb, 0.0, 1.4);
+		specular.rgb = clamp(desaturate(specular).rgb, 0.0, 1.4);
+	}
 
 	vec3 frag = material.Base.rgb * dynlight.rgb + material.Specular * specular.rgb;