- better handling of texture clamp state.

Free combination of clamping with all texture modes still missing in GLES and Softpoly renderers!

src/common/rendering/gles/gles_renderstate.cpp

@@ -127,7 +127,8 @@ bool FGLRenderState::ApplyShader()
 
 	ShaderFlavourData flavour;
 
-	flavour.textureMode = (mTextureMode == TM_NORMAL && mTempTM == TM_OPAQUE ? TM_OPAQUE : mTextureMode);
+	flavour.textureMode = (mTextureMode == TM_NORMAL && mTempTM == TM_OPAQUE ? TM_OPAQUE : mTextureMode) & 0xff;
+	if (mTextureClamp && flavour.textureMode == TM_NORMAL) flavour.textureMode = 5; // fixme. Clamp can now be combined with all modes.
 	
 	if (flavour.textureMode == -1)
 		flavour.textureMode = 0;

src/common/rendering/hwrenderer/data/hw_renderstate.h

@@ -219,6 +219,7 @@ protected:
 	int mLightIndex;
 	int mSpecialEffect;
 	int mTextureMode;
+	int mTextureClamp;
 	int mTextureModeFlags;
 	int mSoftLight;
 	float mLightParms[4];
@@ -259,6 +260,7 @@ public:
 		mFogColor = 0xffffffff;
 		mStreamData.uFogColor = mFogColor;
 		mTextureMode = -1;
+		mTextureClamp = 0;
 		mTextureModeFlags = 0;
 		mStreamData.uDesaturationFactor = 0.0f;
 		mAlphaThreshold = 0.5f;
@@ -344,12 +346,18 @@ public:
 		mStreamData.uDesaturationFactor = 0.0f;
 	}
 
+	void SetTextureClamp(bool on)
+	{
+		if (on) mTextureClamp = TM_CLAMPY;
+		else mTextureClamp = 0;
+	}
+
 	void SetTextureMode(int mode)
 	{
 		mTextureMode = mode;
 	}
 
-	void SetTextureMode(FRenderStyle style, bool clampy = false)
+	void SetTextureMode(FRenderStyle style)
 	{
 		if (style.Flags & STYLEF_RedIsAlpha)
 		{
@@ -363,7 +371,6 @@ public:
 		{
 			SetTextureMode(TM_INVERSE);
 		}
-		if (clampy) mTextureMode |= TM_CLAMPY;
 	}
 
 	int GetTextureMode()

src/common/rendering/polyrenderer/drawers/screen_shader.cpp

@@ -380,7 +380,11 @@ static void ProcessMaterial(int x0, int x1, PolyTriangleThreadData* thread)
 	{
 		auto constants = thread->PushConstants;
 
-		switch (constants->uTextureMode)
+		if (constants->uTextureMode == TM_CLAMPY)
+		{
+			FuncNormal_ClampY(x0, x1, thread);
+		}
+		else switch (constants->uTextureMode & 0xff)
 		{
 		default:
 		case TM_NORMAL:
@@ -389,7 +393,6 @@ static void ProcessMaterial(int x0, int x1, PolyTriangleThreadData* thread)
 		case TM_OPAQUE:       FuncNormal_Opaque(x0, x1, thread); break;
 		case TM_INVERSE:      FuncNormal_Inverse(x0, x1, thread); break;
 		case TM_ALPHATEXTURE: FuncNormal_AlphaTexture(x0, x1, thread); break;
-		case TM_CLAMPY:       FuncNormal_ClampY(x0, x1, thread); break;
 		case TM_INVERTOPAQUE: FuncNormal_InvertOpaque(x0, x1, thread); break;
 		}
 

src/rendering/hwrenderer/scene/hw_decal.cpp

@@ -61,7 +61,7 @@ void HWDecal::DrawDecal(HWDrawInfo *di, FRenderState &state)
 	state.SetObjectColor(DecalColor);
 
 	state.SetLightIndex(dynlightindex);
-	state.SetTextureMode(decal->RenderStyle, true);
+	state.SetTextureMode(decal->RenderStyle);
 	state.SetRenderStyle(decal->RenderStyle);
 	state.SetMaterial(texture, UF_Sprite, 0, CLAMP_XY, decal->Translation, -1);
 
@@ -129,6 +129,7 @@ void HWDrawInfo::DrawDecals(FRenderState &state, TArray<HWDecal *> &decals)
 {
 	side_t *wall = nullptr;
 	state.SetDepthMask(false);
+	state.SetTextureClamp(true);
 	state.SetDepthBias(-1, -128);
 	for (auto gldecal : decals)
 	{
@@ -151,6 +152,7 @@ void HWDrawInfo::DrawDecals(FRenderState &state, TArray<HWDecal *> &decals)
 	state.ClearDepthBias();
 	state.SetTextureMode(TM_NORMAL);
 	state.SetDepthMask(true);
+	state.SetTextureClamp(false);
 }
 
 //==========================================================================

src/rendering/hwrenderer/scene/hw_walls.cpp

@@ -210,7 +210,7 @@ void HWWall::RenderTexturedWall(HWDrawInfo *di, FRenderState &state, int rflags)
 
 	if (flags & HWWall::HWF_CLAMPY && (type == RENDERWALL_M2S || type == RENDERWALL_M2SNF))
 	{
-		state.SetTextureMode(tmode | TM_CLAMPY);
+		state.SetTextureClamp(true);
 	}
 
 	if (type == RENDERWALL_M2SNF)
@@ -300,6 +300,7 @@ void HWWall::RenderTexturedWall(HWDrawInfo *di, FRenderState &state, int rflags)
 	state.SetObjectColor2(0);
 	state.SetAddColor(0);
 	state.SetTextureMode(tmode);
+	state.SetTextureClamp(false);
 	state.EnableGlow(false);
 	state.EnableGradient(false);
 	state.ApplyTextureManipulation(nullptr);