- separate draw lists for walls and flats. This makes the sorting much more efficient because draw types no longer need to be checked in the compare function. This is a lot more important than having perfect texture order.

src/gl/scene/gl_drawinfo.cpp

@@ -644,7 +644,6 @@ SortNode * GLDrawList::DoSort(SortNode * head)
 			case GLDIT_SPRITE:
 				SortSpriteIntoPlane(head,node);
 				break;
-			case GLDIT_POLY: break;
 			}
 			node=next;
 		}
@@ -670,7 +669,7 @@ SortNode * GLDrawList::DoSort(SortNode * head)
 				case GLDIT_SPRITE:
 					SortSpriteIntoWall(head,node);
 					break;
-				case GLDIT_POLY: break;
+
 				case GLDIT_FLAT: break;
 				}
 				node=next;
@@ -722,7 +721,6 @@ void GLDrawList::DoDraw(int pass, int i, bool trans)
 			RenderSprite.Unclock();
 		}
 		break;
-	case GLDIT_POLY: break;
 	}
 }
 
@@ -783,6 +781,36 @@ void GLDrawList::Draw(int pass)
 	}
 }
 
+//==========================================================================
+//
+//
+//
+//==========================================================================
+void GLDrawList::DrawWalls(int pass)
+{
+	RenderWall.Clock();
+	for(unsigned i=0;i<drawitems.Size();i++)
+	{
+		walls[drawitems[i].index].Draw(pass);
+	}
+	RenderWall.Unclock();
+}
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+void GLDrawList::DrawFlats(int pass)
+{
+	RenderFlat.Clock();
+	for(unsigned i=0;i<drawitems.Size();i++)
+	{
+		flats[drawitems[i].index].Draw(pass, false);
+	}
+	RenderFlat.Unclock();
+}
+
 //==========================================================================
 //
 // Sorting the drawitems first by texture and then by light level.
@@ -790,56 +818,45 @@ void GLDrawList::Draw(int pass)
 //==========================================================================
 static GLDrawList * sortinfo;
 
-static int __cdecl dicmp (const void *a, const void *b)
+static int __cdecl diwcmp (const void *a, const void *b)
 {
-	const GLDrawItem * di[2];
-	FMaterial * tx[2];
-	int clamp[2];
-	//colormap_t cm[2];
-	di[0]=(const GLDrawItem *)a;
-	di[1]=(const GLDrawItem *)b;
+	const GLDrawItem * di1 = (const GLDrawItem *)a;
+	GLWall * w1=&sortinfo->walls[di1->index];
 
-	for(int i=0;i<2;i++)
-	{
-		switch(di[i]->rendertype)
-		{
-		case GLDIT_FLAT:
-		{
-			GLFlat * f=&sortinfo->flats[di[i]->index];
-			tx[i]=f->gltexture;
-			clamp[i] = 0;
-		}
-		break;
+	const GLDrawItem * di2 = (const GLDrawItem *)b;
+	GLWall * w2=&sortinfo->walls[di2->index];
 
-		case GLDIT_WALL:
-		{
-			GLWall * w=&sortinfo->walls[di[i]->index];
-			tx[i]=w->gltexture;
-			clamp[i] = w->flags & 3;
+	if (w1->gltexture != w2->gltexture) return w1->gltexture - w2->gltexture;
+	return ((w1->flags & 3) - (w2->flags & 3));
 }
-		break;
 
-		case GLDIT_SPRITE:
+static int __cdecl difcmp (const void *a, const void *b)
 {
-			GLSprite * s=&sortinfo->sprites[di[i]->index];
-			tx[i]=s->gltexture;
-			clamp[i] = 3;
-		}
-		break;
-		case GLDIT_POLY: break;
-		}
-	}
-	if (tx[0]!=tx[1]) return tx[0]-tx[1];
-	return clamp[0]-clamp[1];	// clamping forces different textures.
+	const GLDrawItem * di1 = (const GLDrawItem *)a;
+	GLFlat * w1=&sortinfo->flats[di1->index];
+
+	const GLDrawItem * di2 = (const GLDrawItem *)b;
+	GLFlat* w2=&sortinfo->flats[di2->index];
+
+	return w1->gltexture - w2->gltexture;
 }
 
 
-void GLDrawList::Sort()
+void GLDrawList::SortWalls()
 {
 	if (drawitems.Size()!=0 && gl_sort_textures)
 	{
 		sortinfo=this;
-		qsort(&drawitems[0], drawitems.Size(), sizeof(drawitems[0]), dicmp);
+		qsort(&drawitems[0], drawitems.Size(), sizeof(drawitems[0]), diwcmp);
+	}
+}
+
+void GLDrawList::SortFlats()
+{
+	if (drawitems.Size()!=0 && gl_sort_textures)
+	{
+		sortinfo=this;
+		qsort(&drawitems[0], drawitems.Size(), sizeof(drawitems[0]), difcmp);
 	}
 }
 

src/gl/scene/gl_drawinfo.h

@@ -13,9 +13,11 @@ enum GLDrawItemType
 
 enum DrawListType
 {
-	GLDL_PLAIN,
-	GLDL_MASKED,
-	GLDL_MASKEDOFS,
+	GLDL_PLAINWALLS,
+	GLDL_PLAINFLATS,
+	GLDL_MASKEDWALLS,
+	GLDL_MASKEDFLATS,
+	GLDL_MASKEDWALLSOFS,
 	GLDL_MODELS,
 
 	GLDL_TRANSLUCENT,
@@ -106,7 +108,8 @@ public:
 	void AddFlat(GLFlat * flat);
 	void AddSprite(GLSprite * sprite);
 	void Reset();
-	void Sort();
+	void SortWalls();
+	void SortFlats();
 
 
 	void MakeSortList();
@@ -125,6 +128,8 @@ public:
 	void DoDrawSorted(SortNode * node);
 	void DrawSorted();
 	void Draw(int pass);
+	void DrawWalls(int pass);
+	void DrawFlats(int pass);
 	
 	GLDrawList * next;
 } ;

src/gl/scene/gl_flats.cpp

@@ -402,7 +402,7 @@ inline void GLFlat::PutFlat(bool fog)
 	else
 	{
 		bool masked = gltexture->isMasked() && ((renderflags&SSRF_RENDER3DPLANES) || stack);
-		list = masked ? GLDL_MASKED : GLDL_PLAIN;
+		list = masked ? GLDL_MASKEDFLATS : GLDL_PLAINFLATS;
 	}
 	gl_drawinfo->drawlists[list].AddFlat (this);
 }

src/gl/scene/gl_scene.cpp

@@ -340,18 +340,22 @@ void FGLRenderer::RenderScene(int recursion)
 	gl_RenderState.EnableFog(true);
 	gl_RenderState.BlendFunc(GL_ONE,GL_ZERO);
 
-	gl_drawinfo->drawlists[GLDL_PLAIN].Sort();
-	gl_drawinfo->drawlists[GLDL_MASKED].Sort();
-	gl_drawinfo->drawlists[GLDL_MASKEDOFS].Sort();
+	gl_drawinfo->drawlists[GLDL_PLAINWALLS].SortWalls();
+	gl_drawinfo->drawlists[GLDL_PLAINFLATS].SortFlats();
+	gl_drawinfo->drawlists[GLDL_MASKEDWALLS].SortWalls();
+	gl_drawinfo->drawlists[GLDL_MASKEDFLATS].SortFlats();
+	gl_drawinfo->drawlists[GLDL_MASKEDWALLSOFS].SortWalls();
 
 	// if we don't have a persistently mapped buffer, we have to process all the dynamic lights up front,
 	// so that we don't have to do repeated map/unmap calls on the buffer.
 	if (mLightCount > 0 && gl_fixedcolormap == CM_DEFAULT && gl_lights && !(gl.flags & RFL_BUFFER_STORAGE))
 	{
 		GLRenderer->mLights->Begin();
-		gl_drawinfo->drawlists[GLDL_PLAIN].Draw(GLPASS_LIGHTSONLY);
-		gl_drawinfo->drawlists[GLDL_MASKED].Draw(GLPASS_LIGHTSONLY);
-		gl_drawinfo->drawlists[GLDL_MASKEDOFS].Draw(GLPASS_LIGHTSONLY);
+		gl_drawinfo->drawlists[GLDL_PLAINWALLS].Draw(GLPASS_LIGHTSONLY);
+		gl_drawinfo->drawlists[GLDL_PLAINFLATS].Draw(GLPASS_LIGHTSONLY);
+		gl_drawinfo->drawlists[GLDL_MASKEDWALLS].Draw(GLPASS_LIGHTSONLY);
+		gl_drawinfo->drawlists[GLDL_MASKEDFLATS].Draw(GLPASS_LIGHTSONLY);
+		gl_drawinfo->drawlists[GLDL_MASKEDWALLSOFS].Draw(GLPASS_LIGHTSONLY);
 		gl_drawinfo->drawlists[GLDL_TRANSLUCENTBORDER].Draw(GLPASS_LIGHTSONLY);
 		gl_drawinfo->drawlists[GLDL_TRANSLUCENT].Draw(GLPASS_LIGHTSONLY);
 		GLRenderer->mLights->Finish();
@@ -375,7 +379,8 @@ void FGLRenderer::RenderScene(int recursion)
 
 	gl_RenderState.EnableTexture(gl_texture);
 	gl_RenderState.EnableBrightmap(true);
-	gl_drawinfo->drawlists[GLDL_PLAIN].Draw(pass);
+	gl_drawinfo->drawlists[GLDL_PLAINWALLS].Draw(pass);
+	gl_drawinfo->drawlists[GLDL_PLAINFLATS].Draw(pass);
 
 
 	// Part 2: masked geometry. This is set up so that only pixels with alpha>gl_mask_threshold will show
@@ -385,14 +390,15 @@ void FGLRenderer::RenderScene(int recursion)
 		gl_RenderState.SetTextureMode(TM_MASK);
 	}
 	gl_RenderState.AlphaFunc(GL_GEQUAL, gl_mask_threshold);
-	gl_drawinfo->drawlists[GLDL_MASKED].Draw(pass);
+	gl_drawinfo->drawlists[GLDL_MASKEDWALLS].Draw(pass);
+	gl_drawinfo->drawlists[GLDL_MASKEDFLATS].Draw(pass);
 
 	// Part 3: masked geometry with polygon offset. This list is empty most of the time so only waste time on it when in use.
-	if (gl_drawinfo->drawlists[GLDL_MASKEDOFS].Size() > 0)
+	if (gl_drawinfo->drawlists[GLDL_MASKEDWALLSOFS].Size() > 0)
 	{
 		glEnable(GL_POLYGON_OFFSET_FILL);
 		glPolygonOffset(-1.0f, -128.0f);
-		gl_drawinfo->drawlists[GLDL_MASKEDOFS].Draw(pass);
+		gl_drawinfo->drawlists[GLDL_MASKEDWALLSOFS].Draw(pass);
 		glDisable(GL_POLYGON_OFFSET_FILL);
 		glPolygonOffset(0, 0);
 	}

src/gl/scene/gl_walls.cpp

@@ -151,11 +151,11 @@ void GLWall::PutWall(bool translucent)
 
 		if ((flags&GLWF_SKYHACK && type == RENDERWALL_M2S))
 		{
-			list = GLDL_MASKEDOFS;
+			list = GLDL_MASKEDWALLSOFS;
 		}
 		else
 		{
-			list = masked ? GLDL_MASKED : GLDL_PLAIN;
+			list = masked ? GLDL_MASKEDWALLS : GLDL_PLAINWALLS;
 		}
 		gl_drawinfo->drawlists[list].AddWall(this);