- renderer currently uses links into tface structures that actually

are owned by mesh (or displistmesh)... this causes problems for
   adapting to systems that build tfaces on the fly. Added RE_findTFace
   function to allow allocating tfaces inside renderer itself.

source/blender/render/extern/include/render.h

@@ -191,6 +191,7 @@ void ramp_spec_result(float *specr, float *specg, float *specb, ShadeInput *shi)
 struct VlakRen *RE_findOrAddVlak(int nr);
 struct VertRen *RE_findOrAddVert(int nr);
 struct HaloRen *RE_findOrAddHalo(int nr);
+struct TFace *RE_findTFace(void);
 HaloRen *RE_inithalo(struct Material *ma, float *vec, float *vec1, float *orco, float hasize, 
 					float vectsize, int seed);
 

source/blender/render/extern/include/render_types.h

@@ -51,6 +51,17 @@
 
 /* ------------------------------------------------------------------------- */
 
+struct TFace;
+
+typedef struct TFaceBlock TFaceBlock;
+
+struct TFaceBlock {
+	TFaceBlock *next;
+
+	struct TFace *tfaces;
+	int numAvail;
+};
+
 /* localized texture result data */
 typedef struct TexResult {
 	float tin, tr, tg, tb, ta;
@@ -139,6 +150,7 @@ typedef struct RE_Render
 	struct VlakRen **blovl;
 	struct VertRen **blove;
 	struct HaloRen **bloha;
+	struct TFaceBlock *tfaceBlocks;
 
 	int *rectaccu;
 	int *rectz; /* z buffer: distance buffer */

source/blender/render/intern/source/initrender.c

@@ -442,6 +442,14 @@ void RE_init_render_data(void)
 
 void RE_free_render_data()
 {
+	TFaceBlock *tfb;
+
+	while (tfb = R.tfaceBlocks) {
+		R.tfaceBlocks = tfb->next;
+		MEM_freeN(tfb->tfaces);
+		MEM_freeN(tfb);
+	}
+
 	MEM_freeN(R.blove);
 	R.blove= NULL;
 	MEM_freeN(R.blovl);

source/blender/render/intern/source/renderdatabase.c

@@ -65,6 +65,7 @@
 #include "BLI_arithb.h"
 
 #include "DNA_material_types.h" 
+#include "DNA_mesh_types.h" 
 #include "DNA_texture_types.h" 
 
 #include "BKE_texture.h" 
@@ -173,6 +174,26 @@ VlakRen *RE_findOrAddVlak(int nr)
 	return v;
 }
 
+/* ------------------------------------------------------------------------ */
+
+TFace *RE_findTFace(void)
+{
+	TFaceBlock *tfb = R.tfaceBlocks;
+
+	if (!tfb || !tfb->numAvail) {
+		TFaceBlock *tfbn = MEM_mallocN(sizeof(*tfbn), "TFaceBlock");
+
+		tfbn->tfaces = MEM_mallocN(sizeof(*tfbn->tfaces)*TABLEINITSIZE, "TFaceBlock->tfaces");
+		tfbn->numAvail = TABLEINITSIZE;
+		tfbn->next = R.tfaceBlocks;
+		R.tfaceBlocks = tfbn;
+
+		tfb = tfbn;
+	}
+
+	return &tfb->tfaces[tfb->numAvail--];
+}
+
 /* ------------------------------------------------------------------------- */
 
 HaloRen *RE_inithalo(Material *ma,   float *vec,   float *vec1,