- moved the texture binding code back to the OpenGL specific parts.

turns out that this cannot be consolidated with Vulkan because the semantics are far too different here.

src/gl/renderer/gl_renderer.cpp

@@ -345,6 +345,26 @@ sector_t *FGLRenderer::RenderView(player_t* player)
 	return retsec;
 }
 
+//===========================================================================
+//
+//
+//
+//===========================================================================
+
+void FGLRenderer::BindToFrameBuffer(FMaterial *mat)
+{
+	auto BaseLayer = static_cast<FHardwareTexture*>(mat->GetLayer(0));
+
+	if (BaseLayer == nullptr)
+	{
+		// must create the hardware texture first
+		BaseLayer->BindOrCreate(mat->sourcetex, 0, 0, 0, 0);
+		FHardwareTexture::Unbind(0);
+		gl_RenderState.ClearLastMaterial();
+	}
+	BaseLayer->BindToFrameBuffer(mat->GetWidth(), mat->GetHeight());
+}
+
 //===========================================================================
 //
 // Camera texture rendering
@@ -367,7 +387,7 @@ void FGLRenderer::RenderTextureView(FCanvasTexture *tex, AActor *Viewpoint, doub
 	else
 	{
 		StartOffscreen();
-		gltex->BindToFrameBuffer();
+		BindToFrameBuffer(gltex);
 	}
 
 	IntRect bounds;

src/gl/renderer/gl_renderer.h

@@ -177,10 +177,8 @@ public:
 	bool StartOffscreen();
 	void EndOffscreen();
 
-	void FillSimplePoly(FTexture *texture, FVector2 *points, int npoints,
+	void BindToFrameBuffer(FMaterial *mat);
-		double originx, double originy, double scalex, double scaley,
+		
-		DAngle rotation, const FColormap &colormap, PalEntry flatcolor, int lightlevel, int bottomclip);
-
 	static float GetZNear() { return 5.f; }
 	static float GetZFar() { return 65536.f; }
 };

src/gl/renderer/gl_renderstate.cpp

@@ -36,6 +36,7 @@
 #include "gl/renderer/gl_renderer.h"
 #include "gl/dynlights//gl_lightbuffer.h"
 #include "gl/renderer/gl_renderbuffers.h"
+#include "gl/textures/gl_hwtexture.h"
 
 void gl_SetTextureMode(int type);
 
@@ -424,3 +425,65 @@ void FRenderState::SetClipHeight(float height, float direction)
 		glDisable(GL_CLIP_DISTANCE0);	// GL_CLIP_PLANE0 is the same value so no need to make a distinction
 	}
 }
+
+//===========================================================================
+// 
+//	Binds a texture to the renderer
+//
+//===========================================================================
+
+void FRenderState::SetMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader, bool alphatexture)
+{
+	// alpha textures need special treatment in the legacy renderer because without shaders they need a different texture. This will also override all other translations.
+	if (alphatexture &&  gl.legacyMode) translation = -STRange_AlphaTexture;
+
+	if (mat->tex->bHasCanvas)
+	{
+		mTempTM = TM_OPAQUE;
+	}
+	else
+	{
+		mTempTM = TM_MODULATE;
+	}
+	mEffectState = overrideshader >= 0 ? overrideshader : mat->mShaderIndex;
+	mShaderTimer = mat->tex->shaderspeed;
+	SetSpecular(mat->tex->Glossiness, mat->tex->SpecularLevel);
+
+	// avoid rebinding the same texture multiple times.
+	if (mat == lastMaterial && lastClamp == clampmode && translation == lastTranslation) return;
+	lastMaterial = mat;
+	lastClamp = clampmode;
+	lastTranslation = translation;
+
+	int usebright = false;
+	int maxbound = 0;
+	auto tex = mat->tex;
+
+	if (tex->UseType == ETextureType::SWCanvas) clampmode = CLAMP_NOFILTER;
+	if (tex->bHasCanvas) clampmode = CLAMP_CAMTEX;
+	else if (tex->bWarped && clampmode <= CLAMP_XY) clampmode = CLAMP_NONE;
+
+	// Textures that are already scaled in the texture lump will not get replaced by hires textures.
+	int flags = mat->isExpanded() ? CTF_Expand : (gl_texture_usehires && tex->Scale.X == 1 && tex->Scale.Y == 1 && clampmode <= CLAMP_XY) ? CTF_CheckHires : 0;
+	int numLayers = mat->GetLayers();
+	auto base = static_cast<FHardwareTexture*>(mat->GetLayer(0));
+
+	if (base->BindOrCreate(tex, 0, clampmode, translation, flags))
+	{
+		for (int i = 1; i<numLayers; i++)
+		{
+			FTexture *layer;
+			auto systex = static_cast<FHardwareTexture*>(mat->GetLayer(i, &layer));
+			systex->BindOrCreate(layer, i, clampmode, 0, mat->isExpanded() ? CTF_Expand : 0);
+			maxbound = i;
+		}
+	}
+	// unbind everything from the last texture that's still active
+	for (int i = maxbound + 1; i <= maxBoundMaterial; i++)
+	{
+		FHardwareTexture::Unbind(i);
+		maxBoundMaterial = maxbound;
+	}
+}
+
+

src/gl/renderer/gl_renderstate.h

@@ -131,6 +131,13 @@ class FRenderState
 
 	bool ApplyShader();
 
+	// Texture binding state
+	FMaterial *lastMaterial = nullptr;
+	int lastClamp = 0;
+	int lastTranslation = 0;
+	int maxBoundMaterial = -1;
+
+
 public:
 
 	VSMatrix mProjectionMatrix;
@@ -146,25 +153,13 @@ public:
 
 	void Reset();
 
-	void SetMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader, bool alphatexture)
+	void ClearLastMaterial()
 	{
-		// alpha textures need special treatment in the legacy renderer because without shaders they need a different texture. This will also override all other translations.
+		lastMaterial = nullptr;
-		if (alphatexture &&  gl.legacyMode) translation = -STRange_AlphaTexture;
-		
-		if (mat->tex->bHasCanvas)
-		{
-			mTempTM = TM_OPAQUE;
-		}
-		else
-		{
-			mTempTM = TM_MODULATE;
-		}
-		mEffectState = overrideshader >= 0? overrideshader : mat->mShaderIndex;
-		mShaderTimer = mat->tex->shaderspeed;
-		SetSpecular(mat->tex->Glossiness, mat->tex->SpecularLevel);
-		mat->Bind(clampmode, translation);
 	}
 
+	void SetMaterial(FMaterial *mat, int clampmode, int translation, int overrideshader, bool alphatexture);
+
 	void Apply();
 	void ApplyColorMask();
 	void ApplyMatrices();

src/gl/system/gl_framebuffer.cpp

@@ -73,7 +73,6 @@ OpenGLFrameBuffer::OpenGLFrameBuffer(void *hMonitor, int width, int height, int
 
 	// Make sure all global variables tracking OpenGL context state are reset..
 	FHardwareTexture::InitGlobalState();
-	FMaterial::InitGlobalState();
 	gl_RenderState.Reset();
 
 	GLRenderer = new FGLRenderer(this);
@@ -355,6 +354,11 @@ IHardwareTexture *OpenGLFrameBuffer::CreateHardwareTexture(FTexture *tex)
 	return new FHardwareTexture(tex->bNoCompress);
 }
 
+void OpenGLFrameBuffer::PrecacheMaterial(FMaterial *mat, int translation)
+{
+	gl_RenderState.SetMaterial(mat, CLAMP_NONE, translation, false, false);
+}
+
 FModelRenderer *OpenGLFrameBuffer::CreateModelRenderer(int mli) 
 {
 	return new FGLModelRenderer(mli);
@@ -371,11 +375,6 @@ IShaderProgram *OpenGLFrameBuffer::CreateShaderProgram()
 }
 
 
-void OpenGLFrameBuffer::UnbindTexUnit(int no)
-{
-	FHardwareTexture::Unbind(no);
-}
-
 void OpenGLFrameBuffer::FlushTextures()
 {
 	if (GLRenderer) GLRenderer->FlushTextures();

src/gl/system/gl_framebuffer.h

@@ -35,8 +35,8 @@ public:
 	sector_t *RenderView(player_t *player) override;
 	void SetTextureFilterMode() override;
 	IHardwareTexture *CreateHardwareTexture(FTexture *tex) override;
+	void PrecacheMaterial(FMaterial *mat, int translation) override;
 	FModelRenderer *CreateModelRenderer(int mli) override;
-	void UnbindTexUnit(int no) override;
 	void FlushTextures() override;
 	void TextureFilterChanged() override;
 	void ResetFixedColormap() override;

src/gl/system/gl_wipe.cpp

@@ -242,7 +242,7 @@ void OpenGLFrameBuffer::WipeCleanup()
 		delete wipeendscreen;
 		wipeendscreen = NULL;
 	}
-	FMaterial::ClearLastTexture();
+	gl_RenderState.ClearLastMaterial();
 }
 
 //==========================================================================

src/gl/textures/gl_hwtexture.cpp

@@ -36,6 +36,7 @@
 #include "hwrenderer/utility/hw_cvars.h"
 #include "gl/system/gl_debug.h"
 #include "gl/renderer/gl_renderer.h"
+#include "gl/renderer/gl_renderstate.h"
 #include "gl/textures/gl_samplers.h"
 
 
@@ -481,7 +482,7 @@ void FHardwareTexture::UnbindAll()
 	{
 		Unbind(texunit);
 	}
-	FMaterial::ClearLastTexture();
+	gl_RenderState.ClearLastMaterial();
 }
 
 //===========================================================================

src/hwrenderer/textures/hw_ihwtexture.h

@@ -21,8 +21,6 @@ public:
 	IHardwareTexture() {}
 	virtual ~IHardwareTexture() {}
 
-	virtual void BindToFrameBuffer(int w, int h) = 0;
-	virtual bool BindOrCreate(FTexture *tex, int texunit, int clampmode, int translation, int flags) = 0;
 	virtual void AllocateBuffer(int w, int h, int texelsize) = 0;
 	virtual uint8_t *MapBuffer() = 0;
 	virtual unsigned int CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, int translation, const char *name) = 0;

src/hwrenderer/textures/hw_material.cpp

@@ -407,61 +407,6 @@ outl:
 	return true;
 }
 
-
-//===========================================================================
-// 
-//	Binds a texture to the renderer
-//
-//===========================================================================
-
-static FMaterial *last;
-static int lastclamp;
-static int lasttrans;
-
-void FMaterial::InitGlobalState()
-{
-	last = nullptr;
-	lastclamp = 0;
-	lasttrans = 0;
-}
-
-void FMaterial::Bind(int clampmode, int translation)
-{
-	// avoid rebinding the same texture multiple times.
-	if (this == last && lastclamp == clampmode && translation == lasttrans) return;
-	last = this;
-	lastclamp = clampmode;
-	lasttrans = translation;
-
-	int usebright = false;
-	int maxbound = 0;
-
-	if (tex->UseType == ETextureType::SWCanvas) clampmode = CLAMP_NOFILTER;
-	if (tex->bHasCanvas) clampmode = CLAMP_CAMTEX;
-	else if (tex->bWarped && clampmode <= CLAMP_XY) clampmode = CLAMP_NONE;
-
-	// Textures that are already scaled in the texture lump will not get replaced by hires textures.
-	int flags = mExpanded? CTF_Expand : (gl_texture_usehires && tex->Scale.X == 1 && tex->Scale.Y == 1 && clampmode <= CLAMP_XY)? CTF_CheckHires : 0;
-
-	if (mBaseLayer->BindOrCreate(tex, 0, clampmode, translation, flags))
-	{
-		for(unsigned i=0;i<mTextureLayers.Size();i++)
-		{
-			FTexture *layer = mTextureLayers[i];
-			auto systex = ValidateSysTexture(layer, mExpanded);
-			systex->BindOrCreate(layer, i+1, clampmode, 0, mExpanded ? CTF_Expand : 0);
-			maxbound = i+1;
-		}
-	}
-	// unbind everything from the last texture that's still active
-	for(int i=maxbound+1; i<=mMaxBound;i++)
-	{
-		screen->UnbindTexUnit(i);
-		mMaxBound = maxbound;
-	}
-}
-
-
 //===========================================================================
 //
 //
@@ -469,7 +414,7 @@ void FMaterial::Bind(int clampmode, int translation)
 //===========================================================================
 void FMaterial::Precache()
 {
-	Bind(0, 0);
+	screen->PrecacheMaterial(this, 0);
 }
 
 //===========================================================================
@@ -482,7 +427,7 @@ void FMaterial::PrecacheList(SpriteHits &translations)
 	if (mBaseLayer != nullptr) mBaseLayer->CleanUnused(translations);
 	SpriteHits::Iterator it(translations);
 	SpriteHits::Pair *pair;
-	while(it.NextPair(pair)) Bind(0, pair->Key);
+	while(it.NextPair(pair)) screen->PrecacheMaterial(this, pair->Key);
 }
 
 //===========================================================================
@@ -548,24 +493,6 @@ int FMaterial::GetAreas(FloatRect **pAreas) const
 	}
 }
 
-//===========================================================================
-//
-//
-//
-//===========================================================================
-
-void FMaterial::BindToFrameBuffer()
-{
-	if (mBaseLayer == nullptr)
-	{
-		// must create the hardware texture first
-		mBaseLayer->BindOrCreate(sourcetex, 0, 0, 0, 0);
-		screen->UnbindTexUnit(0);
-		ClearLastTexture();
-	}
-	mBaseLayer->BindToFrameBuffer(mWidth, mHeight);
-}
-
 //==========================================================================
 //
 // Gets a texture from the texture manager and checks its validity for
@@ -637,11 +564,6 @@ void FMaterial::FlushAll()
 	}
 }
 
-void FMaterial::ClearLastTexture()
-{
-	last = NULL;
-}
-
 void FMaterial::Clean(bool f)
 {
 	// This somehow needs to deal with the other layers as well, but they probably need some form of reference counting to work properly...

src/hwrenderer/textures/hw_material.h

@@ -75,7 +75,6 @@ class FMaterial
 	float mSpriteU[2], mSpriteV[2];
 	FloatRect mSpriteRect;
 
-	IHardwareTexture * ValidateSysTexture(FTexture * tex, bool expand);
 	bool TrimBorders(uint16_t *rect);
 
 public:
@@ -87,6 +86,7 @@ public:
 	void SetSpriteRect();
 	void Precache();
 	void PrecacheList(SpriteHits &translations);
+	IHardwareTexture * ValidateSysTexture(FTexture * tex, bool expand);
 	void AddTextureLayer(FTexture *tex)
 	{
 		ValidateTexture(tex, false);
@@ -96,17 +96,34 @@ public:
 	{
 		return !!sourcetex->bMasked;
 	}
+	bool isExpanded() const
+	{
+		return mExpanded;
+	}
 
 	int GetLayers() const
 	{
 		return mTextureLayers.Size() + 1;
 	}
 
-	void Bind(int clamp, int translation);
+	IHardwareTexture *GetLayer(int i, FTexture **pLayer = nullptr)
+	{
+		if (i == 0)
+		{
+			if (pLayer) *pLayer = tex;
+			return mBaseLayer;
+		}
+		else
+		{
+			i--;
+			FTexture *layer = mTextureLayers[i];
+			if (pLayer) *pLayer = layer;
+			return ValidateSysTexture(layer, isExpanded());
+		}
+	}
 
 	void Clean(bool f);
 
-	void BindToFrameBuffer();
 	// Patch drawing utilities
 
 	void GetSpriteRect(FloatRect * r) const
@@ -165,9 +182,6 @@ public:
 	static void FlushAll();
 	static FMaterial *ValidateTexture(FTexture * tex, bool expand);
 	static FMaterial *ValidateTexture(FTextureID no, bool expand, bool trans);
-	static void ClearLastTexture();
-
-	static void InitGlobalState();
 };
 
 #endif

src/v_video.h

@@ -405,6 +405,7 @@ public:
 	virtual void CleanForRestart() {}
 	virtual void SetTextureFilterMode() {}
 	virtual IHardwareTexture *CreateHardwareTexture(FTexture *tex) { return nullptr; }
+	virtual void PrecacheMaterial(FMaterial *mat, int translation) {}
 	virtual FModelRenderer *CreateModelRenderer(int mli) { return nullptr; }
 	virtual void UnbindTexUnit(int no) {}
 	virtual void FlushTextures() {}