Fix T47610: Texture node in compositing nodes does not update

The issue was caused by some code accessing R from a functions which
are marked as safe for use from outside of render pipeline.

Now those functions are safe(er) for use.

8 files changed, 161 insertions, 35 deletions

diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c
index 166c2b26d27..31dac038e43 100644
--- a/source/blender/blenkernel/intern/brush.c
+++ b/source/blender/blenkernel/intern/brush.c
@@ -570,7 +570,7 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br,
 		/* Get strength by feeding the vertex
 		 * location directly into a texture */
 		hasrgb = externtex(mtex, point, &intensity,
-		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	}
 	else if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) {
 		float rotation = -mtex->rot;
@@ -601,7 +601,7 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br,
 		co[2] = 0.0f;
 
 		hasrgb = externtex(mtex, co, &intensity,
-		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	}
 	else {
 		float rotation = -mtex->rot;
@@ -658,7 +658,7 @@ float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br,
 		co[2] = 0.0f;
 
 		hasrgb = externtex(mtex, co, &intensity,
-		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+		                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	}
 
 	intensity += br->texture_sample_bias;
@@ -718,7 +718,7 @@ float BKE_brush_sample_masktex(const Scene *scene, Brush *br,
 		co[2] = 0.0f;
 
 		externtex(mtex, co, &intensity,
-		          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+		          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	}
 	else {
 		float rotation = -mtex->rot;
@@ -775,7 +775,7 @@ float BKE_brush_sample_masktex(const Scene *scene, Brush *br,
 		co[2] = 0.0f;
 
 		externtex(mtex, co, &intensity,
-		          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+		          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	}
 
 	CLAMP(intensity, 0.0f, 1.0f);
@@ -1048,7 +1048,7 @@ unsigned int *BKE_brush_gen_texture_cache(Brush *br, int half_side, bool use_sec
 				/* This is copied from displace modifier code */
 				/* TODO(sergey): brush are always cacheing with CM enabled for now. */
 				externtex(mtex, co, &intensity,
-				          rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false);
+				          rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false);
 
 				((char *)texcache)[(iy * side + ix) * 4] =
 				((char *)texcache)[(iy * side + ix) * 4 + 1] =
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index d02308b6482..66d6252c273 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -3499,7 +3499,7 @@ static void get_cpa_texture(DerivedMesh *dm, ParticleSystem *psys, ParticleSetti
 					break;
 			}
 
-			externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false);
+			externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false);
 
 			if ((event & mtex->mapto) & PAMAP_ROUGH)
 				ptex->rough1 = ptex->rough2 = ptex->roughe = texture_value_blend(def, ptex->rough1, value, mtex->roughfac, blend);
@@ -3582,7 +3582,7 @@ void psys_get_texture(ParticleSimulationData *sim, ParticleData *pa, ParticleTex
 					break;
 			}
 
-			externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false);
+			externtex(mtex, texvec, &value, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false);
 
 			if ((event & mtex->mapto) & PAMAP_TIME) {
 				/* the first time has to set the base value for time regardless of blend mode */
diff --git a/source/blender/editors/mesh/editmesh_tools.c b/source/blender/editors/mesh/editmesh_tools.c
index b240836b153..33dd3cd960a 100644
--- a/source/blender/editors/mesh/editmesh_tools.c
+++ b/source/blender/editors/mesh/editmesh_tools.c
@@ -4987,7 +4987,7 @@ static int edbm_noise_exec(bContext *C, wmOperator *op)
 		BM_ITER_MESH (eve, &iter, em->bm, BM_VERTS_OF_MESH) {
 			if (BM_elem_flag_test(eve, BM_ELEM_SELECT)) {
 				float tin, dum;
-				externtex(ma->mtex[0], eve->co, &tin, &dum, &dum, &dum, &dum, 0, NULL, false);
+				externtex(ma->mtex[0], eve->co, &tin, &dum, &dum, &dum, &dum, 0, NULL, false, false);
 				eve->co[2] += fac * tin;
 			}
 		}
diff --git a/source/blender/editors/sculpt_paint/paint_utils.c b/source/blender/editors/sculpt_paint/paint_utils.c
index dc0852aaee0..31c471c3517 100644
--- a/source/blender/editors/sculpt_paint/paint_utils.c
+++ b/source/blender/editors/sculpt_paint/paint_utils.c
@@ -177,7 +177,7 @@ float paint_get_tex_pixel(MTex *mtex, float u, float v, struct ImagePool *pool,
 	float co[3] = {u, v, 0.0f};
 
 	externtex(mtex, co, &intensity,
-	          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+	          rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 
 	return intensity;
 }
@@ -189,7 +189,7 @@ void paint_get_tex_pixel_col(MTex *mtex, float u, float v, float rgba[4], struct
 	float intensity;
 
 	hasrgb = externtex(mtex, co, &intensity,
-	                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false);
+	                   rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
 	if (!hasrgb) {
 		rgba[0] = intensity;
 		rgba[1] = intensity;
diff --git a/source/blender/render/extern/include/RE_render_ext.h b/source/blender/render/extern/include/RE_render_ext.h
index 075db3a8145..2b5d0ca4e14 100644
--- a/source/blender/render/extern/include/RE_render_ext.h
+++ b/source/blender/render/extern/include/RE_render_ext.h
@@ -46,7 +46,7 @@ struct Scene;
 /* used by particle.c, effect.c, editmesh_modes.c and brush.c, returns 1 if rgb, 0 otherwise */
 int externtex(
         struct MTex *mtex, const float vec[3], float *tin, float *tr, float *tg, float *tb, float *ta,
-        const int thread, struct ImagePool *pool, const bool skip_load_image);
+        const int thread, struct ImagePool *pool, const bool skip_load_image, const bool texnode_preview);
 void texture_rgb_blend(float in[3], const float tex[3], const float out[3], float fact, float facg, int blendtype);
 float texture_value_blend(float tex, float out, float fact, float facg, int blendtype);
 
diff --git a/source/blender/render/intern/include/render_types.h b/source/blender/render/intern/include/render_types.h
index 3b69c124753..ed83cfec764 100644
--- a/source/blender/render/intern/include/render_types.h
+++ b/source/blender/render/intern/include/render_types.h
@@ -437,7 +437,7 @@ typedef struct HaloRen {
 	unsigned int lay;
 	struct Material *mat;
 	struct ImagePool *pool;
-	bool skip_load_image;
+	bool skip_load_image, texnode_preview;
 } HaloRen;
 
 /* ------------------------------------------------------------------------- */
diff --git a/source/blender/render/intern/source/render_texture.c b/source/blender/render/intern/source/render_texture.c
index 29d8f17a72b..172fc999897 100644
--- a/source/blender/render/intern/source/render_texture.c
+++ b/source/blender/render/intern/source/render_texture.c
@@ -1103,7 +1103,16 @@ static void do_2d_mapping(MTex *mtex, float texvec[3], VlakRen *vlr, const float
 
 /* ************************************** */
 
-static int multitex(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres, const short thread, short which_output, struct ImagePool *pool, const bool skip_load_image)
+static int multitex(Tex *tex,
+                    float texvec[3],
+                    float dxt[3], float dyt[3],
+                    int osatex,
+                    TexResult *texres,
+                    const short thread,
+                    const short which_output,
+                    struct ImagePool *pool,
+                    const bool skip_load_image,
+                    const bool texnode_preview)
 {
 	float tmpvec[3];
 	int retval = 0; /* return value, int:0, col:1, nor:2, everything:3 */
@@ -1112,7 +1121,7 @@ static int multitex(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int o
 	
 	if (tex->use_nodes && tex->nodetree) {
 		retval = ntreeTexExecTree(tex->nodetree, texres, texvec, dxt, dyt, osatex, thread,
-		                          tex, which_output, R.r.cfra, (R.r.scemode & R_TEXNODE_PREVIEW) != 0, NULL, NULL);
+		                          tex, which_output, R.r.cfra, texnode_preview, NULL, NULL);
 	}
 	else {
 		switch (tex->type) {
@@ -1218,9 +1227,19 @@ static int multitex(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int o
 	return retval;
 }
 
-static int multitex_nodes_intern(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres,
-                                 const short thread, short which_output, ShadeInput *shi, MTex *mtex, struct ImagePool *pool,
-                                 bool scene_color_manage, const bool skip_load_image)
+static int multitex_nodes_intern(Tex *tex,
+                                 float texvec[3],
+                                 float dxt[3], float dyt[3],
+                                 int osatex,
+                                 TexResult *texres,
+                                 const short thread,
+                                 short which_output,
+                                 ShadeInput *shi,
+                                 MTex *mtex, struct
+                                 ImagePool *pool,
+                                 const bool scene_color_manage,
+                                 const bool skip_load_image,
+                                 const bool texnode_preview)
 {
 	if (tex==NULL) {
 		memset(texres, 0, sizeof(TexResult));
@@ -1236,7 +1255,16 @@ static int multitex_nodes_intern(Tex *tex, float texvec[3], float dxt[3], float
 		if (mtex) {
 			/* we have mtex, use it for 2d mapping images only */
 			do_2d_mapping(mtex, texvec, shi->vlr, shi->facenor, dxt, dyt);
-			rgbnor = multitex(tex, texvec, dxt, dyt, osatex, texres, thread, which_output, pool, skip_load_image);
+			rgbnor = multitex(tex,
+			                  texvec,
+			                  dxt, dyt,
+			                  osatex,
+			                  texres,
+			                  thread,
+			                  which_output,
+			                  pool,
+			                  skip_load_image,
+			                  texnode_preview);
 
 			if (mtex->mapto & (MAP_COL+MAP_COLSPEC+MAP_COLMIR)) {
 				ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
@@ -1269,7 +1297,16 @@ static int multitex_nodes_intern(Tex *tex, float texvec[3], float dxt[3], float
 			}
 			
 			do_2d_mapping(&localmtex, texvec_l, NULL, NULL, dxt_l, dyt_l);
-			rgbnor = multitex(tex, texvec_l, dxt_l, dyt_l, osatex, texres, thread, which_output, pool, skip_load_image);
+			rgbnor = multitex(tex,
+			                  texvec_l,
+			                  dxt_l, dyt_l,
+			                  osatex,
+			                  texres,
+			                  thread,
+			                  which_output,
+			                  pool,
+			                  skip_load_image,
+			                  texnode_preview);
 
 			{
 				ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
@@ -1285,7 +1322,16 @@ static int multitex_nodes_intern(Tex *tex, float texvec[3], float dxt[3], float
 		return rgbnor;
 	}
 	else {
-		return multitex(tex, texvec, dxt, dyt, osatex, texres, thread, which_output, pool, skip_load_image);
+		return multitex(tex,
+		                texvec,
+		                dxt, dyt,
+		                osatex,
+		                texres,
+		                thread,
+		                which_output,
+		                pool,
+		                skip_load_image,
+		                texnode_preview);
 	}
 }
 
@@ -1297,14 +1343,15 @@ int multitex_nodes(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int os
 {
 	return multitex_nodes_intern(tex, texvec, dxt, dyt, osatex, texres,
 	                             thread, which_output, shi, mtex, pool, R.scene_color_manage,
-	                             (R.r.scemode & R_NO_IMAGE_LOAD) != 0);
+	                             (R.r.scemode & R_NO_IMAGE_LOAD) != 0,
+	                             (R.r.scemode & R_TEXNODE_PREVIEW) != 0);
 }
 
 /* this is called for surface shading */
 static int multitex_mtex(ShadeInput *shi, MTex *mtex, float texvec[3], float dxt[3], float dyt[3], TexResult *texres, struct ImagePool *pool, const bool skip_load_image)
 {
 	Tex *tex = mtex->tex;
-
+	/* TODO(sergey): Texture preview should become an argument? */
 	if (tex->use_nodes && tex->nodetree) {
 		/* stupid exception here .. but we have to pass shi and mtex to
 		 * textures nodes for 2d mapping and color management for images */
@@ -1312,7 +1359,16 @@ static int multitex_mtex(ShadeInput *shi, MTex *mtex, float texvec[3], float dxt
 		                        tex, mtex->which_output, R.r.cfra, (R.r.scemode & R_TEXNODE_PREVIEW) != 0, shi, mtex);
 	}
 	else {
-		return multitex(mtex->tex, texvec, dxt, dyt, shi->osatex, texres, shi->thread, mtex->which_output, pool, skip_load_image);
+		return multitex(mtex->tex,
+		                texvec,
+		                dxt, dyt,
+		                shi->osatex,
+		                texres,
+		                shi->thread,
+		                mtex->which_output,
+		                pool,
+		                skip_load_image,
+		                (R.r.scemode & R_TEXNODE_PREVIEW) != 0);
 	}
 }
 
@@ -1323,7 +1379,7 @@ static int multitex_mtex(ShadeInput *shi, MTex *mtex, float texvec[3], float dxt
  */
 int multitex_ext(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres, struct ImagePool *pool, bool scene_color_manage, const bool skip_load_image)
 {
-	return multitex_nodes_intern(tex, texvec, dxt, dyt, osatex, texres, 0, 0, NULL, NULL, pool, scene_color_manage, skip_load_image);
+	return multitex_nodes_intern(tex, texvec, dxt, dyt, osatex, texres, 0, 0, NULL, NULL, pool, scene_color_manage, skip_load_image, false);
 }
 
 /* extern-tex doesn't support nodes (ntreeBeginExec() can't be called when rendering is going on)\
@@ -1335,7 +1391,7 @@ int multitex_ext_safe(Tex *tex, float texvec[3], TexResult *texres, struct Image
 	int use_nodes= tex->use_nodes, retval;
 	
 	tex->use_nodes = false;
-	retval= multitex_nodes_intern(tex, texvec, NULL, NULL, 0, texres, 0, 0, NULL, NULL, pool, scene_color_manage, skip_load_image);
+	retval= multitex_nodes_intern(tex, texvec, NULL, NULL, 0, texres, 0, 0, NULL, NULL, pool, scene_color_manage, skip_load_image, false);
 	tex->use_nodes= use_nodes;
 	
 	return retval;
@@ -2672,6 +2728,7 @@ void do_material_tex(ShadeInput *shi, Render *re)
 void do_volume_tex(ShadeInput *shi, const float *xyz, int mapto_flag, float col_r[3], float *val, Render *re)
 {
 	const bool skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
+	const bool texnode_preview = (re->r.scemode & R_TEXNODE_PREVIEW) != 0;
 	MTex *mtex;
 	Tex *tex;
 	TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
@@ -2759,7 +2816,16 @@ void do_volume_tex(ShadeInput *shi, const float *xyz, int mapto_flag, float col_
 				else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
 			}
 			
-			rgbnor = multitex(tex, texvec, NULL, NULL, 0, &texres, shi->thread, mtex->which_output, re->pool, skip_load_image);	/* NULL = dxt/dyt, 0 = shi->osatex - not supported */
+			rgbnor = multitex(tex,
+			                  texvec,
+			                  NULL, NULL,
+			                  0,
+			                  &texres,
+			                  shi->thread,
+			                  mtex->which_output,
+			                  re->pool,
+			                  skip_load_image,
+			                  texnode_preview);	/* NULL = dxt/dyt, 0 = shi->osatex - not supported */
 			
 			/* texture output */
 
@@ -2871,6 +2937,7 @@ void do_volume_tex(ShadeInput *shi, const float *xyz, int mapto_flag, float col_
 void do_halo_tex(HaloRen *har, float xn, float yn, float col_r[4])
 {
 	const bool skip_load_image = har->skip_load_image;
+	const bool texnode_preview = har->texnode_preview;
 	MTex *mtex;
 	TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
 	float texvec[3], dxt[3], dyt[3], fact, facm, dx;
@@ -2927,7 +2994,16 @@ void do_halo_tex(HaloRen *har, float xn, float yn, float col_r[4])
 
 	if (mtex->tex->type==TEX_IMAGE) do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
 	
-	rgb = multitex(mtex->tex, texvec, dxt, dyt, osatex, &texres, 0, mtex->which_output, har->pool, skip_load_image);
+	rgb = multitex(mtex->tex,
+	               texvec,
+	               dxt, dyt,
+	               osatex,
+	               &texres,
+	               0,
+	               mtex->which_output,
+	               har->pool,
+	               skip_load_image,
+	               texnode_preview);
 
 	/* texture output */
 	if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
@@ -3017,6 +3093,7 @@ void do_halo_tex(HaloRen *har, float xn, float yn, float col_r[4])
 void do_sky_tex(const float rco[3], const float lo[3], const float dxyview[2], float hor[3], float zen[3], float *blend, int skyflag, short thread)
 {
 	const bool skip_load_image = (R.r.scemode & R_NO_IMAGE_LOAD) != 0;
+	const bool texnode_preview = (R.r.scemode & R_TEXNODE_PREVIEW) != 0;
 	MTex *mtex;
 	Tex *tex;
 	TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
@@ -3134,7 +3211,16 @@ void do_sky_tex(const float rco[3], const float lo[3], const float dxyview[2], f
 			/* texture */
 			if (tex->type==TEX_IMAGE) do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
 		
-			rgb = multitex(mtex->tex, texvec, dxt, dyt, R.osa, &texres, thread, mtex->which_output, R.pool, skip_load_image);
+			rgb = multitex(mtex->tex,
+			               texvec,
+			               dxt, dyt,
+			               R.osa,
+			               &texres,
+			               thread,
+			               mtex->which_output,
+			               R.pool,
+			               skip_load_image,
+			               texnode_preview);
 			
 			/* texture output */
 			if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
@@ -3227,6 +3313,7 @@ void do_sky_tex(const float rco[3], const float lo[3], const float dxyview[2], f
 void do_lamp_tex(LampRen *la, const float lavec[3], ShadeInput *shi, float col_r[3], int effect)
 {
 	const bool skip_load_image = (R.r.scemode & R_NO_IMAGE_LOAD) != 0;
+	const bool texnode_preview = (R.r.scemode & R_TEXNODE_PREVIEW) != 0;
 	Object *ob;
 	MTex *mtex;
 	Tex *tex;
@@ -3350,7 +3437,16 @@ void do_lamp_tex(LampRen *la, const float lavec[3], ShadeInput *shi, float col_r
 				do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
 			}
 			
-			rgb = multitex(tex, texvec, dxt, dyt, shi->osatex, &texres, shi->thread, mtex->which_output, R.pool, skip_load_image);
+			rgb = multitex(tex,
+			               texvec,
+			               dxt, dyt,
+			               shi->osatex,
+			               &texres,
+			               shi->thread,
+			               mtex->which_output,
+			               R.pool,
+			               skip_load_image,
+			               texnode_preview);
 
 			/* texture output */
 			if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
@@ -3424,7 +3520,13 @@ void do_lamp_tex(LampRen *la, const float lavec[3], ShadeInput *shi, float col_r
 
 /* ------------------------------------------------------------------------- */
 
-int externtex(MTex *mtex, const float vec[3], float *tin, float *tr, float *tg, float *tb, float *ta, const int thread, struct ImagePool *pool, const bool skip_load_image)
+int externtex(MTex *mtex,
+              const float vec[3],
+              float *tin, float *tr, float *tg, float *tb, float *ta,
+              const int thread,
+              struct ImagePool *pool,
+              const bool skip_load_image,
+              const bool texnode_preview)
 {
 	Tex *tex;
 	TexResult texr;
@@ -3450,7 +3552,15 @@ int externtex(MTex *mtex, const float vec[3], float *tin, float *tr, float *tg,
 		do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
 	}
 	
-	rgb = multitex(tex, texvec, dxt, dyt, 0, &texr, thread, mtex->which_output, pool, skip_load_image);
+	rgb = multitex(tex,
+	               texvec,
+	               dxt, dyt,
+	               0, &texr,
+	               thread,
+	               mtex->which_output,
+	               pool,
+	               skip_load_image,
+	               texnode_preview);
 	
 	if (rgb) {
 		texr.tin = IMB_colormanagement_get_luminance(&texr.tr);
diff --git a/source/blender/render/intern/source/renderdatabase.c b/source/blender/render/intern/source/renderdatabase.c
index 560627b1be1..e8db096c9a5 100644
--- a/source/blender/render/intern/source/renderdatabase.c
+++ b/source/blender/render/intern/source/renderdatabase.c
@@ -956,6 +956,7 @@ HaloRen *RE_inithalo(Render *re, ObjectRen *obr, Material *ma,
                      const float *orco, float hasize, float vectsize, int seed)
 {
 	const bool skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
+	const bool texnode_preview = (re->r.scemode & R_TEXNODE_PREVIEW) != 0;
 	HaloRen *har;
 	MTex *mtex;
 	float tin, tr, tg, tb, ta;
@@ -1047,7 +1048,13 @@ HaloRen *RE_inithalo(Render *re, ObjectRen *obr, Material *ma,
 				}
 			}
 
-			externtex(mtex, texvec, &tin, &tr, &tg, &tb, &ta, 0, re->pool, skip_load_image);
+			externtex(mtex,
+			          texvec,
+			          &tin, &tr, &tg, &tb, &ta,
+			          0,
+			          re->pool,
+			          skip_load_image,
+			          texnode_preview);
 
 			yn= tin*mtex->colfac;
 			//zn= tin*mtex->alphafac;
@@ -1067,7 +1074,8 @@ HaloRen *RE_inithalo(Render *re, ObjectRen *obr, Material *ma,
 	}
 
 	har->pool = re->pool;
-	har->skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
+	har->skip_load_image = skip_load_image;
+	har->texnode_preview = texnode_preview;
 
 	return har;
 }
@@ -1077,6 +1085,7 @@ HaloRen *RE_inithalo_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Mater
                               const float *orco, const float *uvco, float hasize, float vectsize, int seed, const float pa_co[3])
 {
 	const bool skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
+	const bool texnode_preview = (re->r.scemode & R_TEXNODE_PREVIEW) != 0;
 	HaloRen *har;
 	MTex *mtex;
 	float tin, tr, tg, tb, ta;
@@ -1180,7 +1189,13 @@ HaloRen *RE_inithalo_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Mater
 				copy_v3_v3(texvec, orco);
 			}
 
-			hasrgb = externtex(mtex, texvec, &tin, &tr, &tg, &tb, &ta, 0, re->pool, skip_load_image);
+			hasrgb = externtex(mtex,
+			                   texvec,
+			                   &tin, &tr, &tg, &tb, &ta,
+			                   0,
+			                   re->pool,
+			                   skip_load_image,
+			                   texnode_preview);
 
 			//yn= tin*mtex->colfac;
 			//zn= tin*mtex->alphafac;
@@ -1225,6 +1240,7 @@ HaloRen *RE_inithalo_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Mater
 
 	har->pool = re->pool;
 	har->skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
+	har->texnode_preview = (re->r.scemode & R_TEXNODE_PREVIEW) != 0;
 
 	return har;
 }