Remove SAT texture filter. It's not working, thought it was but that's

because the mipmap was not being refreshed. Also this will be problematic
to support when I add tile/mipmap cache, so would not rather not try to.
Can be added back afterwards if someone wants to make it work.

7 files changed, 54 insertions, 290 deletions

diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c
index c5e0f096c04..ac66dfa621c 100644
--- a/source/blender/editors/space_view3d/view3d_draw.c
+++ b/source/blender/editors/space_view3d/view3d_draw.c
@@ -1362,7 +1362,7 @@ static void draw_bgpic(Scene *scene, ARegion *ar, View3D *v3d)
 				int mip= 0;
 
 				if(ibuf->mipmap[0]==NULL)
-					IMB_makemipmap(ibuf, 0, 0);
+					IMB_makemipmap(ibuf, 0);
 
 				while(tzoom < 1.0f && mip<8 && ibuf->mipmap[mip]) {
 					tzoom*= 2.0f;
diff --git a/source/blender/imbuf/IMB_imbuf.h b/source/blender/imbuf/IMB_imbuf.h
index a77ef54b0b6..14c58496352 100644
--- a/source/blender/imbuf/IMB_imbuf.h
+++ b/source/blender/imbuf/IMB_imbuf.h
@@ -317,7 +317,7 @@ void IMB_antialias(struct ImBuf * ibuf);
 void IMB_filter(struct ImBuf *ibuf);
 void IMB_filterN(struct ImBuf *out, struct ImBuf *in);
 void IMB_filter_extend(struct ImBuf *ibuf, char *mask);
-void IMB_makemipmap(struct ImBuf *ibuf, int use_filter, int SAT);
+void IMB_makemipmap(struct ImBuf *ibuf, int use_filter);
 
 /**
  *
diff --git a/source/blender/imbuf/intern/filter.c b/source/blender/imbuf/intern/filter.c
index 76ed0e2c61f..5692686a9bc 100644
--- a/source/blender/imbuf/intern/filter.c
+++ b/source/blender/imbuf/intern/filter.c
@@ -371,114 +371,21 @@ void IMB_filter_extend(struct ImBuf *ibuf, char *mask)
 	}
 }
 
-#if 0
 void IMB_makemipmap(ImBuf *ibuf, int use_filter)
 {
-	ImBuf *hbuf= ibuf;
-	int minsize, curmap=0;
-	
-	minsize= ibuf->x<ibuf->y?ibuf->x:ibuf->y;
-	
-	while(minsize>10 && curmap<IB_MIPMAP_LEVELS) {
-		if(use_filter) {
+	ImBuf *hbuf = ibuf;
+	int curmap = 0;
+	while (curmap < IB_MIPMAP_LEVELS) {
+		if (use_filter) {
 			ImBuf *nbuf= IMB_allocImBuf(hbuf->x, hbuf->y, 32, IB_rect, 0);
 			IMB_filterN(nbuf, hbuf);
-			ibuf->mipmap[curmap]= IMB_onehalf(nbuf);
+			ibuf->mipmap[curmap] = IMB_onehalf(nbuf);
 			IMB_freeImBuf(nbuf);
 		}
-		else {
-			ibuf->mipmap[curmap]= IMB_onehalf(hbuf);
-		}
-		hbuf= ibuf->mipmap[curmap];
-		
+		else ibuf->mipmap[curmap] = IMB_onehalf(hbuf);
+		hbuf = ibuf->mipmap[curmap];
+		if (hbuf->x == 1 && hbuf->y == 1) break;
 		curmap++;
-		minsize= hbuf->x<hbuf->y?hbuf->x:hbuf->y;
 	}
 }
-#endif
 
-void IMB_makemipmap(ImBuf *ibuf, int use_filter, int SAT)
-{
-	if (SAT) {
-		// to maximize precision subtract image average, use intermediate double SAT,
-		// only convert to float at the end
-		const double dv = 1.0/255.0;
-		double avg[4] = {0, 0, 0, 0};
-		const int x4 = ibuf->x << 2;
-		int x, y, i;
-		ImBuf* sbuf = IMB_allocImBuf(ibuf->x, ibuf->y, 32, IB_rectfloat, 0);
-		double *satp, *satbuf = MEM_callocN(sizeof(double)*ibuf->x*ibuf->y*4, "tmp SAT buf");
-		const double mf = ibuf->x*ibuf->y;
-		float* fp;
-		ibuf->mipmap[0] = sbuf;
-		if (ibuf->rect_float) {
-			fp = ibuf->rect_float;
-			for (y=0; y<ibuf->y; ++y)
-				for (x=0; x<ibuf->x; ++x) {
-					avg[0] += *fp++;
-					avg[1] += *fp++;
-					avg[2] += *fp++;
-					avg[3] += *fp++;
-				}
-		}
-		else {
-			char* cp = (char*)ibuf->rect;
-			for (y=0; y<ibuf->y; ++y)
-				for (x=0; x<ibuf->x; ++x) {
-					avg[0] += *cp++ * dv;
-					avg[1] += *cp++ * dv;
-					avg[2] += *cp++ * dv;
-					avg[3] += *cp++ * dv;
-				}
-		}
-		avg[0] /= mf;
-		avg[1] /= mf;
-		avg[2] /= mf;
-		avg[3] /= mf;
-		for (y=0; y<ibuf->y; ++y)
-			for (x=0; x<ibuf->x; ++x) {
-				const unsigned int p = (x + y*ibuf->x) << 2;
-				char* cp = (char*)ibuf->rect + p;
-				fp = ibuf->rect_float + p;
-				satp = satbuf + p;
-				for (i=0; i<4; ++i, ++cp, ++fp, ++satp) {
-					double sv = (ibuf->rect_float ? (double)*fp : (double)(*cp)*dv) - avg[i];
-					if (x > 0) sv += satp[-4];
-					if (y > 0) sv += satp[-x4];
-					if (x > 0 && y > 0) sv -= satp[-x4 - 4];
-					*satp = sv;
-				}
-			}
-		fp = sbuf->rect_float;
-		satp = satbuf;
-		for (y=0; y<ibuf->y; ++y)
-			for (x=0; x<ibuf->x; ++x) {
-				*fp++ = (float)*satp++;
-				*fp++ = (float)*satp++;
-				*fp++ = (float)*satp++;
-				*fp++ = (float)*satp++;
-			}
-		MEM_freeN(satbuf);
-		fp = &sbuf->rect_float[(sbuf->x - 1 + (sbuf->y - 1)*sbuf->x) << 2];
-		fp[0] = avg[0];
-		fp[1] = avg[1];
-		fp[2] = avg[2];
-		fp[3] = avg[3];
-	}
-	else {
-		ImBuf *hbuf = ibuf;
-		int curmap = 0;
-		while (curmap < IB_MIPMAP_LEVELS) {
-			if (use_filter) {
-				ImBuf *nbuf= IMB_allocImBuf(hbuf->x, hbuf->y, 32, IB_rect, 0);
-				IMB_filterN(nbuf, hbuf);
-				ibuf->mipmap[curmap] = IMB_onehalf(nbuf);
-				IMB_freeImBuf(nbuf);
-			}
-			else ibuf->mipmap[curmap] = IMB_onehalf(hbuf);
-			hbuf = ibuf->mipmap[curmap];
-			if (hbuf->x == 1 && hbuf->y == 1) break;
-			curmap++;
-		}
-	}
-}
diff --git a/source/blender/imbuf/intern/tiff.c b/source/blender/imbuf/intern/tiff.c
index 7ee31ff7d9a..5a31a705591 100644
--- a/source/blender/imbuf/intern/tiff.c
+++ b/source/blender/imbuf/intern/tiff.c
@@ -62,13 +62,13 @@
  * Local declarations. *
  ***********************/
 /* Reading and writing of an in-memory TIFF file. */
-tsize_t imb_tiff_ReadProc(thandle_t handle, tdata_t data, tsize_t n);
-tsize_t imb_tiff_WriteProc(thandle_t handle, tdata_t data, tsize_t n);
-toff_t  imb_tiff_SeekProc(thandle_t handle, toff_t ofs, int whence);
-int     imb_tiff_CloseProc(thandle_t handle);
-toff_t  imb_tiff_SizeProc(thandle_t handle);
-int     imb_tiff_DummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize);
-void    imb_tiff_DummyUnmapProc(thandle_t fd, tdata_t base, toff_t size);
+static tsize_t imb_tiff_ReadProc(thandle_t handle, tdata_t data, tsize_t n);
+static tsize_t imb_tiff_WriteProc(thandle_t handle, tdata_t data, tsize_t n);
+static toff_t  imb_tiff_SeekProc(thandle_t handle, toff_t ofs, int whence);
+static int     imb_tiff_CloseProc(thandle_t handle);
+static toff_t  imb_tiff_SizeProc(thandle_t handle);
+static int     imb_tiff_DummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize);
+static void    imb_tiff_DummyUnmapProc(thandle_t fd, tdata_t base, toff_t size);
 
 
 /* Structure for in-memory TIFF file. */
@@ -86,11 +86,11 @@ struct ImbTIFFMemFile {
  *****************************/
 
 
-void imb_tiff_DummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
+static void imb_tiff_DummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
 {
 }
 
-int imb_tiff_DummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) 
+static int imb_tiff_DummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize) 
 {
             return (0);
 }
@@ -105,7 +105,7 @@ int imb_tiff_DummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
  * @return: Number of bytes actually read.
  * 	 0 = EOF.
  */
-tsize_t imb_tiff_ReadProc(thandle_t handle, tdata_t data, tsize_t n)
+static tsize_t imb_tiff_ReadProc(thandle_t handle, tdata_t data, tsize_t n)
 {
 	tsize_t nRemaining, nCopy;
 	struct ImbTIFFMemFile* mfile;
@@ -147,7 +147,7 @@ tsize_t imb_tiff_ReadProc(thandle_t handle, tdata_t data, tsize_t n)
  * NOTE: The current Blender implementation should not need this function.  It
  *       is simply a stub.
  */
-tsize_t imb_tiff_WriteProc(thandle_t handle, tdata_t data, tsize_t n)
+static tsize_t imb_tiff_WriteProc(thandle_t handle, tdata_t data, tsize_t n)
 {
 	printf("imb_tiff_WriteProc: this function should not be called.\n");
 	return (-1);
@@ -169,7 +169,7 @@ tsize_t imb_tiff_WriteProc(thandle_t handle, tdata_t data, tsize_t n)
  * @return: Resulting offset location within the file, measured in bytes from
  *          the beginning of the file.  (-1) indicates an error.
  */
-toff_t imb_tiff_SeekProc(thandle_t handle, toff_t ofs, int whence)
+static toff_t imb_tiff_SeekProc(thandle_t handle, toff_t ofs, int whence)
 {
 	struct ImbTIFFMemFile *mfile;
 	toff_t new_offset;
@@ -216,7 +216,7 @@ toff_t imb_tiff_SeekProc(thandle_t handle, toff_t ofs, int whence)
  *
  * @return: 0
  */
-int imb_tiff_CloseProc(thandle_t handle)
+static int imb_tiff_CloseProc(thandle_t handle)
 {
 	struct ImbTIFFMemFile *mfile;
 
@@ -242,7 +242,7 @@ int imb_tiff_CloseProc(thandle_t handle)
  *
  * @return: Size of file (in bytes).
  */
-toff_t imb_tiff_SizeProc(thandle_t handle)
+static toff_t imb_tiff_SizeProc(thandle_t handle)
 {
 	struct ImbTIFFMemFile* mfile;
 
diff --git a/source/blender/makesdna/DNA_texture_types.h b/source/blender/makesdna/DNA_texture_types.h
index 3212ff7b534..5d80936d2cc 100644
--- a/source/blender/makesdna/DNA_texture_types.h
+++ b/source/blender/makesdna/DNA_texture_types.h
@@ -335,8 +335,6 @@ typedef struct TexMapping {
 #define TXF_EWA			1
 #define TXF_FELINE		2
 #define TXF_AREA		3
-// TXF_SAT only available when mipmaps disabled
-#define TXF_SAT			4
 
 /* imaflag unused, only for version check */
 #define TEX_FIELDS_		8
diff --git a/source/blender/makesrna/intern/rna_texture.c b/source/blender/makesrna/intern/rna_texture.c
index b5a4ac5db8c..8a432002d2b 100644
--- a/source/blender/makesrna/intern/rna_texture.c
+++ b/source/blender/makesrna/intern/rna_texture.c
@@ -48,7 +48,6 @@ static EnumPropertyItem texture_filter_items[] = {
 	{TXF_EWA, "EWA", 0, "EWA", ""},
 	{TXF_FELINE, "FELINE", 0, "FELINE", ""},
 	{TXF_AREA, "AREA", 0, "Area", ""},
-	{TXF_SAT, "SAT", 0, "SAT (4x mem)", ""},
 	{0, NULL, 0, NULL, NULL}};
 
 EnumPropertyItem texture_type_items[] = {
@@ -327,26 +326,8 @@ static void rna_ImageTexture_mipmap_set(PointerRNA *ptr, int value)
 	if(value) tex->imaflag |= TEX_MIPMAP;
 	else tex->imaflag &= ~TEX_MIPMAP;
 
-	if((tex->imaflag & TEX_MIPMAP) && tex->texfilter == TXF_SAT)
-		tex->texfilter = TXF_EWA;
-}
-
-static EnumPropertyItem *rna_ImageTexture_filter_itemf(bContext *C, PointerRNA *ptr, int *free)
-{
-	Tex *tex= (Tex*)ptr->data;
-	EnumPropertyItem *item= NULL;
-	int totitem= 0;
-
-	RNA_enum_items_add_value(&item, &totitem, texture_filter_items, TXF_BOX);
-	RNA_enum_items_add_value(&item, &totitem, texture_filter_items, TXF_EWA);
-	RNA_enum_items_add_value(&item, &totitem, texture_filter_items, TXF_FELINE);
-	RNA_enum_items_add_value(&item, &totitem, texture_filter_items, TXF_AREA);
 	if(tex->imaflag & TEX_MIPMAP)
-		RNA_enum_items_add_value(&item, &totitem, texture_filter_items, TXF_SAT);
-	
-	*free= 1;
-
-	return item;
+		tex->texfilter = TXF_EWA;
 }
 
 static void rna_Envmap_source_update(Main *bmain, Scene *scene, PointerRNA *ptr)
@@ -695,7 +676,6 @@ static void rna_def_filter_common(StructRNA *srna)
 	prop= RNA_def_property(srna, "filter", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "texfilter");
 	RNA_def_property_enum_items(prop, texture_filter_items);
-	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_ImageTexture_filter_itemf");
 	RNA_def_property_ui_text(prop, "Filter", "Texture filter to use for sampling image");
 	RNA_def_property_update(prop, 0, "rna_Texture_update");
 	
diff --git a/source/blender/render/intern/source/imagetexture.c b/source/blender/render/intern/source/imagetexture.c
index cf0a01576d8..8abde533028 100644
--- a/source/blender/render/intern/source/imagetexture.c
+++ b/source/blender/render/intern/source/imagetexture.c
@@ -417,107 +417,6 @@ static float clipy_rctf(rctf *rf, float y1, float y2)
 
 }
 
-// used in SAT_get_color_bilerp() below
-static void SAT_getcol(float* col, ImBuf* ibuf, int x, int y)
-{
-	if ((x == (ibuf->x - 1)) && (y == (ibuf->y - 1))) {	// avg val pos
-		col[0] = col[1] = col[2] = col[3] = 0.f;
-		return;
-	}
-	ibuf_get_color(col, ibuf, x, y);
-}
-
-// used in boxsampleclip_SAT() below
-static void SAT_get_color_bilerp(float *col, ImBuf *ibuf, float u, float v)
-{
-	float c00[4], c01[4], c10[4], c11[4];
-	const float ufl = floorf(u -= 0.5f), vfl = floorf(v -= 0.5f);
-	const float uf = u - ufl, vf = v - vfl;
-	const float w00=(1.f-uf)*(1.f-vf), w10=uf*(1.f-vf), w01=(1.f-uf)*vf, w11=uf*vf;
-	int x1 = (int)ufl, y1 = (int)vfl, x2 = x1 + 1, y2 = y1 + 1;
-	x1 = (x1 < 0) ? 0 : (x1 >= ibuf->x ? ibuf->x - 1 : x1);
-	x2 = (x2 < 0) ? 0 : (x2 >= ibuf->x ? ibuf->x - 1 : x2);
-	y1 = (y1 < 0) ? 0 : (y1 >= ibuf->y ? ibuf->y - 1 : y1);
-	y2 = (y2 < 0) ? 0 : (y2 >= ibuf->y ? ibuf->y - 1 : y2);
-	SAT_getcol(c00, ibuf, x1, y1);
-	SAT_getcol(c10, ibuf, x2, y1);
-	SAT_getcol(c01, ibuf, x1, y2);
-	SAT_getcol(c11, ibuf, x2, y2);
-	col[0] = w00*c00[0] + w10*c10[0] + w01*c01[0] + w11*c11[0];
-	col[1] = w00*c00[1] + w10*c10[1] + w01*c01[1] + w11*c11[1];
-	col[2] = w00*c00[2] + w10*c10[2] + w01*c01[2] + w11*c11[2];
-	col[3] = w00*c00[3] + w10*c10[3] + w01*c01[3] + w11*c11[3];
-}
-
-static void boxsampleclip_SAT(ImBuf *ibuf, rctf *rf, TexResult *texres, int intpol)
-{
-	float div, col[4];
-	if (intpol) {
-		div = 1.f/((rf->xmax - rf->xmin + 1.f)*(rf->ymax - rf->ymin + 1.f));
-		SAT_get_color_bilerp(&texres->tr, ibuf, rf->xmax, rf->ymax);
-		if (rf->ymin >= 1.f) {
-			SAT_get_color_bilerp(col, ibuf, rf->xmax, rf->ymin - 1.f);
-			texres->tr -= col[0];
-			texres->tg -= col[1];
-			texres->tb -= col[2];
-			texres->ta -= col[3];
-		}
-		if (rf->xmin >= 1.f) {
-			SAT_get_color_bilerp(col, ibuf, rf->xmin - 1.f, rf->ymax);
-			texres->tr -= col[0];
-			texres->tg -= col[1];
-			texres->tb -= col[2];
-			texres->ta -= col[3];
-		}
-		if (rf->xmin >= 1.f && rf->ymin >= 1.f) {
-			SAT_get_color_bilerp(col, ibuf, rf->xmin - 1.f, rf->ymin - 1.f);
-			texres->tr += col[0];
-			texres->tg += col[1];
-			texres->tb += col[2];
-			texres->ta += col[3];
-		}
-	}
-	else {
-		int startx = (int)floorf(rf->xmin);
-		int endx = (int)floorf(rf->xmax);
-		int starty = (int)floorf(rf->ymin);
-		int endy = (int)floorf(rf->ymax);
-		if (startx < 0) startx = 0;
-		if (starty < 0) starty = 0;
-		if (endx >= ibuf->x) endx = ibuf->x - 1;
-		if (endy >= ibuf->y) endy = ibuf->y - 1;
-		div = 1.f/((endx - startx + 1)*(endy - starty + 1));
-		SAT_getcol(&texres->tr, ibuf, endx, endy);
-		if (starty >= 1) {
-			SAT_getcol(col, ibuf, endx, starty - 1);
-			texres->tr -= col[0];
-			texres->tg -= col[1];
-			texres->tb -= col[2];
-			texres->ta -= col[3];
-		}
-		if (startx >= 1) {
-			SAT_getcol(col, ibuf, startx - 1, endy);
-			texres->tr -= col[0];
-			texres->tg -= col[1];
-			texres->tb -= col[2];
-			texres->ta -= col[3];
-		}
-		if (startx >=1 && starty >= 1) {
-			SAT_getcol(col, ibuf, startx - 1, starty - 1);
-			texres->tr += col[0];
-			texres->tg += col[1];
-			texres->tb += col[2];
-			texres->ta += col[3];
-		}
-	}
-	// avg
-	ibuf_get_color(col, ibuf, ibuf->x - 1, ibuf->y - 1);
-	texres->tr = texres->tr*div + col[0];
-	texres->tg = texres->tg*div + col[1];
-	texres->tb = texres->tb*div + col[2];
-	texres->ta = texres->ta*div + col[3];
-}
-
 static void boxsampleclip(struct ImBuf *ibuf, rctf *rf, TexResult *texres)
 {
 	/* sample box, is clipped already, and minx etc. have been set at ibuf size.
@@ -601,7 +500,7 @@ static void boxsampleclip(struct ImBuf *ibuf, rctf *rf, TexResult *texres)
 	}
 }
 
-static void boxsample(ImBuf *ibuf, float minx, float miny, float maxx, float maxy, TexResult *texres, int imaprepeat, int imapextend, int SAT, int intpol)
+static void boxsample(ImBuf *ibuf, float minx, float miny, float maxx, float maxy, TexResult *texres, int imaprepeat, int imapextend, int intpol)
 {
 	/* Sample box, performs clip. minx etc are in range 0.0 - 1.0 .
    * Enlarge with antialiased edges of pixels.
@@ -655,10 +554,7 @@ static void boxsample(ImBuf *ibuf, float minx, float miny, float maxx, float max
 	if(count>1) {
 		tot= texres->tr= texres->tb= texres->tg= texres->ta= 0.0;
 		while(count--) {
-			if (SAT)
-				boxsampleclip_SAT(ibuf, rf, &texr, intpol);
-			else
-				boxsampleclip(ibuf, rf, &texr);
+			boxsampleclip(ibuf, rf, &texr);
 			
 			opp= square_rctf(rf);
 			tot+= opp;
@@ -676,12 +572,8 @@ static void boxsample(ImBuf *ibuf, float minx, float miny, float maxx, float max
 			if(texres->talpha) texres->ta/= tot;
 		}
 	}
-	else {
-		if (SAT)
-			boxsampleclip_SAT(ibuf, rf, texres, intpol);
-		else
-			boxsampleclip(ibuf, rf, texres);
-	}
+	else
+		boxsampleclip(ibuf, rf, texres);
 
 	if(texres->talpha==0) texres->ta= 1.0;
 	
@@ -707,7 +599,7 @@ void image_sample(Image *ima, float fx, float fy, float dx, float dy, float *res
 	if( (R.flag & R_SEC_FIELD) && (ibuf->flags & IB_fields) )
 		ibuf->rect+= (ibuf->x*ibuf->y);
 	
-	boxsample(ibuf, fx, fy, fx+dx, fy+dy, &texres, 0, 1, 0, 0);
+	boxsample(ibuf, fx, fy, fx+dx, fy+dy, &texres, 0, 1, 0);
 	result[0]= texres.tr;
 	result[1]= texres.tg;
 	result[2]= texres.tb;
@@ -726,7 +618,7 @@ void ibuf_sample(ImBuf *ibuf, float fx, float fy, float dx, float dy, float *res
 	}
 	
 	memset(&texres, 0, sizeof(texres));
-	boxsample(ibuf, fx, fy, fx+dx, fy+dy, &texres, 0, 1, 0, 0);
+	boxsample(ibuf, fx, fy, fx+dx, fy+dy, &texres, 0, 1, 0);
 	result[0]= texres.tr;
 	result[1]= texres.tg;
 	result[2]= texres.tb;
@@ -1148,7 +1040,7 @@ static int imagewraposa_aniso(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec,
 	if (tex->imaflag & TEX_MIPMAP) {
 		if (((ibuf->flags & IB_fields) == 0) && (ibuf->mipmap[0] == NULL)) {
 			BLI_lock_thread(LOCK_IMAGE);
-			if (ibuf->mipmap[0] == NULL) IMB_makemipmap(ibuf, tex->imaflag & TEX_GAUSS_MIP, 0);
+			if (ibuf->mipmap[0] == NULL) IMB_makemipmap(ibuf, tex->imaflag & TEX_GAUSS_MIP);
 			BLI_unlock_thread(LOCK_IMAGE);
 		}
 	}
@@ -1505,7 +1397,7 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 	TexResult texr;
 	float fx, fy, minx, maxx, miny, maxy, dx, dy, dxt[3], dyt[3];
 	float maxd, pixsize, val1, val2, val3;
-	int curmap, retval, imaprepeat, imapextend, SAT = (tex->texfilter == TXF_SAT);
+	int curmap, retval, imaprepeat, imapextend;
 
 	// TXF: since dxt/dyt might be modified here and since they might be needed after imagewraposa() call,
 	// make a local copy here so that original vecs remain untouched
@@ -1513,7 +1405,7 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 	VECCOPY(dyt, DYT);
 
 	// anisotropic filtering
-	if (!SAT && (tex->texfilter != TXF_BOX))
+	if (tex->texfilter != TXF_BOX)
 		return imagewraposa_aniso(tex, ima, ibuf, texvec, dxt, dyt, texres);
 
 	texres->tin= texres->ta= texres->tr= texres->tg= texres->tb= 0.0f;
@@ -1536,13 +1428,13 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 	   return retval;
 	
 	/* mipmap test */
-	if (SAT || tex->imaflag & TEX_MIPMAP) {
+	if (tex->imaflag & TEX_MIPMAP) {
 		if(ibuf->flags & IB_fields);
 		else if(ibuf->mipmap[0]==NULL) {
 			BLI_lock_thread(LOCK_IMAGE);
 			
 			if(ibuf->mipmap[0]==NULL)
-				IMB_makemipmap(ibuf, tex->imaflag & TEX_GAUSS_MIP, SAT);
+				IMB_makemipmap(ibuf, tex->imaflag & TEX_GAUSS_MIP);
 
 			BLI_unlock_thread(LOCK_IMAGE);
 		}
@@ -1754,11 +1646,11 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 			//minx*= 1.35f;
 			//miny*= 1.35f;
 			
-			boxsample(curibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0, 0);
+			boxsample(curibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0);
 			val1= texres->tr+texres->tg+texres->tb;
-			boxsample(curibuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0, 0);
+			boxsample(curibuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0);
 			val2= texr.tr + texr.tg + texr.tb;
-			boxsample(curibuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0, 0);
+			boxsample(curibuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0);
 			val3= texr.tr + texr.tg + texr.tb;
 
 			/* don't switch x or y! */
@@ -1767,7 +1659,7 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 			
 			if(previbuf!=curibuf) {  /* interpolate */
 				
-				boxsample(previbuf, fx-minx, fy-miny, fx+minx, fy+miny, &texr, imaprepeat, imapextend, 0, 0);
+				boxsample(previbuf, fx-minx, fy-miny, fx+minx, fy+miny, &texr, imaprepeat, imapextend, 0);
 				
 				/* calc rgb */
 				dx= 2.0f*(pixsize-maxd)/pixsize;
@@ -1784,9 +1676,9 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 				}
 				
 				val1= dy*val1+ dx*(texr.tr + texr.tg + texr.tb);
-				boxsample(previbuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0, 0);
+				boxsample(previbuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0);
 				val2= dy*val2+ dx*(texr.tr + texr.tg + texr.tb);
-				boxsample(previbuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0, 0);
+				boxsample(previbuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0);
 				val3= dy*val3+ dx*(texr.tr + texr.tg + texr.tb);
 				
 				texres->nor[0]= (val1-val2);	/* vals have been interpolated above! */
@@ -1809,10 +1701,10 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 			maxy= fy+miny;
 			miny= fy-miny;
 
-			boxsample(curibuf, minx, miny, maxx, maxy, texres, imaprepeat, imapextend, 0, 0);
+			boxsample(curibuf, minx, miny, maxx, maxy, texres, imaprepeat, imapextend, 0);
 
 			if(previbuf!=curibuf) {  /* interpolate */
-				boxsample(previbuf, minx, miny, maxx, maxy, &texr, imaprepeat, imapextend, 0, 0);
+				boxsample(previbuf, minx, miny, maxx, maxy, &texr, imaprepeat, imapextend, 0);
 				
 				fx= 2.0f*(pixsize-maxd)/pixsize;
 				
@@ -1831,39 +1723,26 @@ int imagewraposa(Tex *tex, Image *ima, ImBuf *ibuf, float *texvec, float *DXT, f
 	}
 	else {
 		const int intpol = tex->imaflag & TEX_INTERPOL;
-		if (intpol && !SAT) {
+		if (intpol) {
 			/* sample 1 pixel minimum */
 			if (minx < 0.5f / ibuf->x) minx = 0.5f / ibuf->x;
 			if (miny < 0.5f / ibuf->y) miny = 0.5f / ibuf->y;
 		}
 
 		if(texres->nor && (tex->imaflag & TEX_NORMALMAP)==0) {
-			if (SAT) {
-				boxsample(ibuf->mipmap[0], fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 1, intpol);
-				val1 = texres->tr + texres->tg + texres->tb;
-				boxsample(ibuf->mipmap[0], fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 1, intpol);
-				val2 = texr.tr + texr.tg + texr.tb;
-				boxsample(ibuf->mipmap[0], fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 1, intpol);
-				val3 = texr.tr + texr.tg + texr.tb;
-			}
-			else {
-				boxsample(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0, 0);
-				val1= texres->tr+texres->tg+texres->tb;
-				boxsample(ibuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0, 0);
-				val2= texr.tr + texr.tg + texr.tb;
-				boxsample(ibuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0, 0);
-				val3= texr.tr + texr.tg + texr.tb;
-			}
+			boxsample(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0);
+			val1= texres->tr+texres->tg+texres->tb;
+			boxsample(ibuf, fx-minx+dxt[0], fy-miny+dxt[1], fx+minx+dxt[0], fy+miny+dxt[1], &texr, imaprepeat, imapextend, 0);
+			val2= texr.tr + texr.tg + texr.tb;
+			boxsample(ibuf, fx-minx+dyt[0], fy-miny+dyt[1], fx+minx+dyt[0], fy+miny+dyt[1], &texr, imaprepeat, imapextend, 0);
+			val3= texr.tr + texr.tg + texr.tb;
+
 			/* don't switch x or y! */
 			texres->nor[0]= (val1-val2);
 			texres->nor[1]= (val1-val3);
 		}
-		else {
-			if (SAT)
-				boxsample(ibuf->mipmap[0], fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 1, intpol);
-			else
-				boxsample(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0, 0);
-		}
+		else
+			boxsample(ibuf, fx-minx, fy-miny, fx+minx, fy+miny, texres, imaprepeat, imapextend, 0);
 	}
 	
 	BRICONTRGB;