Preview Render:

* Fixes for texture and material nodes.
* Texture node previews now work more like materials.

source/blender/editors/include/ED_render.h

@@ -64,21 +64,19 @@ typedef struct RenderInfo {
 /* Render the preview
 
 pr_method:
-- PR_DRAW_RENDER: preview is rendered and drawn, as indicated by called context (buttons panel)
-- PR_ICON_RENDER: the preview is not drawn and the function is not dynamic,
-  so no events are processed. Hopefully fast enough for at least 32x32 
-- PR_DO_RENDER: preview is rendered, not drawn, but events are processed for afterqueue,
-  in use for node editor now.
+- PR_BUTS_RENDER: preview is rendered for buttons window
+- PR_ICON_RENDER: preview is rendered for icons. hopefully fast enough for at least 32x32 
+- PR_NODE_RENDER: preview is rendered for node editor.
 */
 
-#define PR_DRAW_RENDER	0
+#define PR_BUTS_RENDER	0
 #define PR_ICON_RENDER	1
-#define PR_DO_RENDER	2
+#define PR_NODE_RENDER	2
 
 void ED_preview_init_dbase(void);
 void ED_preview_free_dbase(void);
 
-void ED_preview_shader_job(const struct bContext *C, void *owner, struct ID *id, struct ID *parent, struct MTex *slot, int sizex, int sizey);
+void ED_preview_shader_job(const struct bContext *C, void *owner, struct ID *id, struct ID *parent, struct MTex *slot, int sizex, int sizey, int method);
 void ED_preview_icon_job(const struct bContext *C, void *owner, struct ID *id, unsigned int *rect, int sizex, int sizey);
 
 void ED_preview_draw(const struct bContext *C, void *idp, void *parentp, void *slot, rcti *rect);

source/blender/editors/render/render_preview.c

@@ -359,7 +359,7 @@ static Scene *preview_prepare_scene(Scene *scene, ID *id, int id_type, ShaderPre
 				}
 				else {
 					sce->lay= 1<<mat->pr_type;
-					if(mat->nodetree)
+					if(mat->nodetree && sp->pr_method==PR_NODE_RENDER)
 						ntreeInitPreview(mat->nodetree, sp->sizex, sp->sizey);
 				}
 			}
@@ -408,6 +408,9 @@ static Scene *preview_prepare_scene(Scene *scene, ID *id, int id_type, ShaderPre
 					}
 				}
 			}
+
+			if(tex && tex->nodetree && sp->pr_method==PR_NODE_RENDER)
+				ntreeInitPreview(tex->nodetree, sp->sizex, sp->sizey);
 		}
 		else if(id_type==ID_LA) {
 			Lamp *la= (Lamp *)id;
@@ -529,7 +532,7 @@ void ED_preview_draw(const bContext *C, void *idp, void *parentp, void *slotp, r
 		}
 		
 		if(ok==0) {
-			ED_preview_shader_job(C, sa, id, parent, slot, newx, newy);
+			ED_preview_shader_job(C, sa, id, parent, slot, newx, newy, PR_BUTS_RENDER);
 		}
 	}	
 }
@@ -880,11 +883,12 @@ static void shader_preview_render(ShaderPreview *sp, ID *id, int split, int firs
 	Render *re;
 	Scene *sce;
 	float oldlens;
+	short idtype= GS(id->name);
 	char name[32];
 	int sizex;
 
 	/* get the stuff from the builtin preview dbase */
-	sce= preview_prepare_scene(sp->scene, id, GS(id->name), sp); // XXX sizex
+	sce= preview_prepare_scene(sp->scene, id, idtype, sp); // XXX sizex
 	if(sce==NULL) return;
 	
 	if(!split || first) sprintf(name, "Preview %p", sp->owner);
@@ -896,14 +900,19 @@ static void shader_preview_render(ShaderPreview *sp, ID *id, int split, int firs
 		re= RE_NewRender(name);
 		
 	/* sce->r gets copied in RE_InitState! */
-	if(sp->pr_method==PR_DO_RENDER) {
-		sce->r.scemode |= R_NODE_PREVIEW;
-		sce->r.scemode &= ~R_NO_IMAGE_LOAD;
+	sce->r.scemode &= ~(R_MATNODE_PREVIEW|R_TEXNODE_PREVIEW);
+	sce->r.scemode &= ~R_NO_IMAGE_LOAD;
+
+	if(sp->pr_method==PR_ICON_RENDER) {
+		sce->r.scemode |= R_NO_IMAGE_LOAD;
+	}
+	else if(sp->pr_method==PR_NODE_RENDER) {
+		if(idtype == ID_MA) sce->r.scemode |= R_MATNODE_PREVIEW;
+		else if(idtype == ID_TE) sce->r.scemode |= R_TEXNODE_PREVIEW;
 		sce->r.mode |= R_OSA;
 	}
-	else {	/* PR_ICON_RENDER */
-		sce->r.scemode &= ~R_NODE_PREVIEW;
-		sce->r.scemode |= R_NO_IMAGE_LOAD;
+	else {	/* PR_BUTS_RENDER */
+		sce->r.mode |= R_OSA;
 	}
 
 	/* in case of split preview, use border render */
@@ -917,7 +926,7 @@ static void shader_preview_render(ShaderPreview *sp, ID *id, int split, int firs
 	RE_InitState(re, NULL, &sce->r, sizex, sp->sizey, NULL);
 
 	/* callbacs are cleared on GetRender() */
-	if(sp->pr_method==PR_DO_RENDER) {
+	if(sp->pr_method==PR_BUTS_RENDER) {
 		RE_display_draw_cb(re, sp, shader_preview_draw);
 		RE_test_break_cb(re, sp, shader_preview_break);
 	}
@@ -1125,7 +1134,7 @@ void ED_preview_icon_job(const bContext *C, void *owner, ID *id, unsigned int *r
 	WM_jobs_start(CTX_wm_manager(C), steve);
 }
 
-void ED_preview_shader_job(const bContext *C, void *owner, ID *id, ID *parent, MTex *slot, int sizex, int sizey)
+void ED_preview_shader_job(const bContext *C, void *owner, ID *id, ID *parent, MTex *slot, int sizex, int sizey, int method)
 {
 	wmJob *steve;
 	ShaderPreview *sp;
@@ -1138,7 +1147,7 @@ void ED_preview_shader_job(const bContext *C, void *owner, ID *id, ID *parent, M
 	sp->owner= owner;
 	sp->sizex= sizex;
 	sp->sizey= sizey;
-	sp->pr_method= PR_DO_RENDER;
+	sp->pr_method= method;
 	sp->id = id;
 	sp->parent= parent;
 	sp->slot= slot;

source/blender/editors/space_node/node_draw.c

@@ -54,6 +54,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "BKE_context.h"
+#include "BKE_depsgraph.h"
 #include "BKE_global.h"
 #include "BKE_image.h"
 #include "BKE_library.h"
@@ -102,6 +103,7 @@ void ED_node_changed_update(bContext *C, bNode *node)
 		return;
 
 	if(snode->treetype==NTREE_SHADER) {
+		DAG_id_flush_update(snode->id, 0);
 		WM_event_add_notifier(C, NC_MATERIAL|ND_SHADING, snode->id);
 	}
 	else if(snode->treetype==NTREE_COMPOSIT) {
@@ -127,6 +129,7 @@ void ED_node_changed_update(bContext *C, bNode *node)
 		WM_event_add_notifier(C, NC_SCENE|ND_NODES, CTX_data_scene(C));
 	}			
 	else if(snode->treetype==NTREE_TEXTURE) {
+		DAG_id_flush_update(snode->id, 0);
 		WM_event_add_notifier(C, NC_TEXTURE|ND_NODES, snode->id);
 	}
 

source/blender/editors/space_node/space_node.c

@@ -179,12 +179,14 @@ static void node_area_refresh(const struct bContext *C, struct ScrArea *sa)
 {
 	/* default now: refresh node is starting preview */
 	SpaceNode *snode= sa->spacedata.first;
+
+	snode_set_context(snode, CTX_data_scene(C));
 	
 	if(snode->nodetree) {
 		if(snode->treetype==NTREE_SHADER) {
 			Material *ma= (Material *)snode->id;
 			if(ma->use_nodes)
-				ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100);
+				ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100, PR_NODE_RENDER);
 		}
 		else if(snode->treetype==NTREE_COMPOSIT) {
 			Scene *scene= (Scene *)snode->id;
@@ -194,7 +196,7 @@ static void node_area_refresh(const struct bContext *C, struct ScrArea *sa)
 		else if(snode->treetype==NTREE_TEXTURE) {
 			Tex *tex= (Tex *)snode->id;
 			if(tex->use_nodes) {
-				ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100);
+				ED_preview_shader_job(C, sa, snode->id, NULL, NULL, 100, 100, PR_NODE_RENDER);
 			}
 		}
 	}

source/blender/makesdna/DNA_scene_types.h

@@ -840,7 +840,7 @@ typedef struct Scene {
 #define R_PASSEPARTOUT		0x0004
 #define R_PREVIEWBUTS		0x0008
 #define R_EXTENSION			0x0010
-#define R_NODE_PREVIEW		0x0020
+#define R_MATNODE_PREVIEW	0x0020
 #define R_DOCOMP			0x0040
 #define R_COMP_CROP			0x0080
 #define R_FREE_IMAGE		0x0100
@@ -852,7 +852,8 @@ typedef struct Scene {
 #define R_STAMP_INFO		0x4000	/* deprecated */
 #define R_FULL_SAMPLE		0x8000
 #define R_COMP_RERENDER		0x10000
-#define R_RECURS_PROTECTION     0x20000
+#define R_RECURS_PROTECTION	0x20000
+#define R_TEXNODE_PREVIEW	0x40000
 
 /* r->stamp */
 #define R_STAMP_TIME 	0x0001

source/blender/makesrna/intern/rna_material.c

@@ -1716,7 +1716,7 @@ void RNA_def_material(BlenderRNA *brna)
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
 	RNA_def_property_boolean_funcs(prop, NULL, "rna_Material_use_nodes_set");
 	RNA_def_property_ui_text(prop, "Use Nodes", "Use shader nodes to render the material.");
-	RNA_def_property_update(prop, NC_MATERIAL, NULL);
+	RNA_def_property_update(prop, 0, "rna_Material_update");
 
 	prop= RNA_def_property(srna, "active_node_material", PROP_POINTER, PROP_NONE);
 	RNA_def_property_struct_type(prop, "Material");

source/blender/makesrna/intern/rna_texture.c

@@ -107,6 +107,14 @@ static void rna_Texture_update(bContext *C, PointerRNA *ptr)
 	WM_event_add_notifier(C, NC_TEXTURE, tex);
 }
 
+static void rna_Texture_nodes_update(bContext *C, PointerRNA *ptr)
+{
+	Tex *tex= ptr->id.data;
+
+	DAG_id_flush_update(&tex->id, 0);
+	WM_event_add_notifier(C, NC_TEXTURE|ND_NODES, tex);
+}
+
 static void rna_Texture_type_set(PointerRNA *ptr, int value)
 {
 	Tex *tex= (Tex*)ptr->data;
@@ -1678,12 +1686,12 @@ static void rna_def_texture(BlenderRNA *brna)
 	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
 	RNA_def_property_boolean_funcs(prop, NULL, "rna_Texture_use_nodes_set");
 	RNA_def_property_ui_text(prop, "Use Nodes", "Make this a node-based texture");
-	RNA_def_property_update(prop, 0, "rna_Texture_update");
+	RNA_def_property_update(prop, 0, "rna_Texture_nodes_update");
 	
 	prop= RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
 	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
 	RNA_def_property_ui_text(prop, "Node Tree", "Node tree for node-based textures");
-	RNA_def_property_update(prop, 0, "rna_Texture_update");
+	RNA_def_property_update(prop, 0, "rna_Texture_nodes_update");
 	
 	rna_def_animdata_common(srna);
 

source/blender/nodes/intern/TEX_nodes/TEX_at.c

@@ -50,7 +50,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_at = {

source/blender/nodes/intern/TEX_nodes/TEX_bricks.c

@@ -109,9 +109,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_bricks= {

source/blender/nodes/intern/TEX_nodes/TEX_checker.c

@@ -61,9 +61,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_checker= {

source/blender/nodes/intern/TEX_nodes/TEX_compose.c

@@ -49,7 +49,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_compose= {

source/blender/nodes/intern/TEX_nodes/TEX_coord.c

@@ -42,9 +42,7 @@ static void vectorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, sho
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &vectorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &vectorfn, data);
 }
 
 bNodeType tex_node_coord= {

source/blender/nodes/intern/TEX_nodes/TEX_curves.c

@@ -50,7 +50,7 @@ static void time_colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in,
 
 static void time_exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &time_colorfn);
+	tex_output(node, in, out[0], &time_colorfn, data);
 }
 
 
@@ -100,7 +100,7 @@ static void rgb_colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in,
 
 static void rgb_exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &rgb_colorfn);
+	tex_output(node, in, out[0], &rgb_colorfn, data);
 }
 
 static void rgb_init(bNode *node)

source/blender/nodes/intern/TEX_nodes/TEX_decompose.c

@@ -67,10 +67,10 @@ static void valuefn_a(float *out, TexParams *p, bNode *node, bNodeStack **in, sh
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &valuefn_r);
-	tex_output(node, in, out[1], &valuefn_g);
-	tex_output(node, in, out[2], &valuefn_b);
-	tex_output(node, in, out[3], &valuefn_a);
+	tex_output(node, in, out[0], &valuefn_r, data);
+	tex_output(node, in, out[1], &valuefn_g, data);
+	tex_output(node, in, out[2], &valuefn_b, data);
+	tex_output(node, in, out[3], &valuefn_a, data);
 }
 
 bNodeType tex_node_decompose= {

source/blender/nodes/intern/TEX_nodes/TEX_distance.c

@@ -53,9 +53,7 @@ static void valuefn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &valuefn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &valuefn, data);
 }
 
 bNodeType tex_node_distance= {

source/blender/nodes/intern/TEX_nodes/TEX_hueSatVal.c

@@ -84,7 +84,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_hue_sat= {

source/blender/nodes/intern/TEX_nodes/TEX_image.c

@@ -73,9 +73,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 static void init(bNode* node)

source/blender/nodes/intern/TEX_nodes/TEX_invert.c

@@ -55,9 +55,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_invert= {

source/blender/nodes/intern/TEX_nodes/TEX_math.c

@@ -171,9 +171,7 @@ static void valuefn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &valuefn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &valuefn, data);
 }
 
 bNodeType tex_node_math= {

source/blender/nodes/intern/TEX_nodes/TEX_mixRgb.c

@@ -57,9 +57,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_mix_rgb= {

source/blender/nodes/intern/TEX_nodes/TEX_output.c

@@ -83,28 +83,30 @@ static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 	TexCallData *cdata = (TexCallData *)data;
 	TexResult *target = cdata->target;
 	
-	if(in[1]->hasinput && !in[0]->hasinput)
-		tex_do_preview(node, in[1], data);
-	else
-		tex_do_preview(node, in[0], data);
+	if(cdata->do_preview) {
+		TexParams params;
+		params_from_cdata(&params, cdata);
+
+		if(in[1]->hasinput && !in[0]->hasinput)
+			tex_input_rgba(&target->tr, in[1], &params, cdata->thread);
+		else
+			tex_input_rgba(&target->tr, in[0], &params, cdata->thread);
+		tex_do_preview(node, params.coord, &target->tr);
+	}
+	else if(cdata->which_output == node->custom1) {
+		TexParams params;
+		params_from_cdata(&params, cdata);
+		
+		osa(tex_input_rgba, &target->tr, in[0], &params, cdata->thread);
 	
-	if(!cdata->do_preview) {
-		if(cdata->which_output == node->custom1)
-		{
-			TexParams params;
-			params_from_cdata(&params, cdata);
-			
-			osa(tex_input_rgba, &target->tr, in[0], &params, cdata->thread);
-		
-			target->tin = (target->tr + target->tg + target->tb) / 3.0f;
-			target->talpha = 1.0f;
-		
-			if(target->nor) {
-				if(in[1]->hasinput)
-					osa(tex_input_vec, target->nor, in[1], &params, cdata->thread);
-				else
-					target->nor = 0;
-			}
+		target->tin = (target->tr + target->tg + target->tb) / 3.0f;
+		target->talpha = 1.0f;
+	
+		if(target->nor) {
+			if(in[1]->hasinput)
+				osa(tex_input_vec, target->nor, in[1], &params, cdata->thread);
+			else
+				target->nor = 0;
 		}
 	}
 }

source/blender/nodes/intern/TEX_nodes/TEX_proc.c

@@ -125,9 +125,8 @@ static int count_outputs(bNode *node)
         static void name##_exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)                  \
         {                                                                                                    \
                 int outs = count_outputs(node);                                                              \
-                if(outs >= 1) tex_output(node, in, out[0], &name##_colorfn);                                 \
-                if(outs >= 2) tex_output(node, in, out[1], &name##_normalfn);                                \
-                if(outs >= 1) tex_do_preview(node, out[0], data);                                            \
+                if(outs >= 1) tex_output(node, in, out[0], &name##_colorfn, data);                                 \
+                if(outs >= 2) tex_output(node, in, out[1], &name##_normalfn, data);                                \
         }
 
 

source/blender/nodes/intern/TEX_nodes/TEX_rotate.c

@@ -95,7 +95,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 }
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_rotate= {

source/blender/nodes/intern/TEX_nodes/TEX_scale.c

@@ -56,7 +56,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 }
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_scale = {

source/blender/nodes/intern/TEX_nodes/TEX_texture.c

@@ -79,9 +79,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &colorfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_texture= {

source/blender/nodes/intern/TEX_nodes/TEX_translate.c

@@ -56,7 +56,7 @@ static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, shor
 }
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
 {
-	tex_output(node, in, out[0], &colorfn);
+	tex_output(node, in, out[0], &colorfn, data);
 }
 
 bNodeType tex_node_translate = {

source/blender/nodes/intern/TEX_nodes/TEX_valToNor.c

@@ -72,9 +72,7 @@ static void normalfn(float *out, TexParams *p, bNode *node, bNodeStack **in, sho
 }
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
 {
-	tex_output(node, in, out[0], &normalfn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &normalfn, data);
 }
 
 bNodeType tex_node_valtonor = {

source/blender/nodes/intern/TEX_nodes/TEX_valToRgb.c

@@ -50,7 +50,7 @@ static void valtorgb_colorfn(float *out, TexParams *p, bNode *node, bNodeStack *
 
 static void valtorgb_exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out) 
 {
-	tex_output(node, in, out[0], &valtorgb_colorfn);
+	tex_output(node, in, out[0], &valtorgb_colorfn, data);
 }
 
 static void valtorgb_init(bNode *node)
@@ -97,9 +97,7 @@ static void rgbtobw_valuefn(float *out, TexParams *p, bNode *node, bNodeStack **
 
 static void rgbtobw_exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_output(node, in, out[0], &rgbtobw_valuefn);
-	
-	tex_do_preview(node, out[0], data);
+	tex_output(node, in, out[0], &rgbtobw_valuefn, data);
 }
 
 bNodeType tex_node_rgbtobw= {

source/blender/nodes/intern/TEX_nodes/TEX_viewer.c

@@ -39,7 +39,16 @@ static bNodeSocketType outputs[]= {
 
 static void exec(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
 {
-	tex_do_preview(node, in[0], data);
+	TexCallData *cdata = (TexCallData *)data;
+
+	if(cdata->do_preview) {
+		TexParams params;
+		float col[4];
+		params_from_cdata(&params, cdata);
+
+		tex_input_rgba(col, in[0], &params, cdata->thread);
+		tex_do_preview(node, params.coord, col);
+	}
 }
 
 bNodeType tex_node_viewer = {

source/blender/nodes/intern/TEX_util.c

@@ -49,8 +49,12 @@
 
 void tex_call_delegate(TexDelegate *dg, float *out, TexParams *params, short thread)
 {
-	if(dg->node->need_exec)
+	if(dg->node->need_exec) {
 		dg->fn(out, params, dg->node, dg->in, thread);
+
+		if(dg->cdata->do_preview)
+			tex_do_preview(dg->node, params->coord, out);
+	}
 }
 
 void tex_input(float *out, int sz, bNodeStack *in, TexParams *params, short thread)
@@ -95,26 +99,6 @@ float tex_input_value(bNodeStack *in, TexParams *params, short thread)
 	return out[0];
 }
 
-static void init_preview(bNode *node)
-{
-	int xsize = (int)(node->prvr.xmax - node->prvr.xmin);
-	int ysize = (int)(node->prvr.ymax - node->prvr.ymin);
-	
-	if(xsize == 0) {
-		xsize = PREV_RES;
-		ysize = PREV_RES;
-	}
-	
-	if(node->preview==NULL)
-		node->preview= MEM_callocN(sizeof(bNodePreview), "node preview");
-	
-	if(node->preview->rect==NULL) {
-		node->preview->rect= MEM_callocN(4*xsize + xsize*ysize*sizeof(float)*4, "node preview rect");
-		node->preview->xsize= xsize;
-		node->preview->ysize= ysize;
-	}
-}
-
 void params_from_cdata(TexParams *out, TexCallData *in)
 {
 	out->coord = in->coord;
@@ -123,48 +107,19 @@ void params_from_cdata(TexParams *out, TexCallData *in)
 	out->cfra = in->cfra;
 }
 
-void tex_do_preview(bNode *node, bNodeStack *ns, TexCallData *cdata)
+void tex_do_preview(bNode *node, float *coord, float *col)
 {
-	int x, y;
-	float *result;
-	bNodePreview *preview;
-	float coord[3] = {0, 0, 0};
-	TexParams params;
-	int resolution;
-	int xsize, ysize;
-	
-	if(!cdata->do_preview)
-		return;
-	
-	if(!(node->typeinfo->flag & NODE_PREVIEW))
-		return;
-	
-	init_preview(node);
-	
-	preview = node->preview;
-	xsize = preview->xsize;
-	ysize = preview->ysize;
-	
-	params.dxt = 0;
-	params.dyt = 0;
-	params.cfra = cdata->cfra;
-	params.coord = coord;
-	
-	resolution = (xsize < ysize) ? xsize : ysize;
-	
-	for(x=0; x<xsize; x++)
-	for(y=0; y<ysize; y++)
-	{
-		params.coord[0] = ((float) x / resolution) * 2 - 1;
-		params.coord[1] = ((float) y / resolution) * 2 - 1;
-		
-		result = preview->rect + 4 * (xsize*y + x);
-		
-		tex_input_rgba(result, ns, &params, cdata->thread);
+	bNodePreview *preview= node->preview;
+
+	if(preview) {
+		int xs= ((coord[0] + 1.0f)*0.5f)*preview->xsize;
+		int ys= ((coord[1] + 1.0f)*0.5f)*preview->ysize;
+
+		nodeAddToPreview(node, col, xs, ys);
 	}
 }
 
-void tex_output(bNode *node, bNodeStack **in, bNodeStack *out, TexFn texfn)
+void tex_output(bNode *node, bNodeStack **in, bNodeStack *out, TexFn texfn, TexCallData *cdata)
 {
 	TexDelegate *dg;
 	if(!out->data)
@@ -173,7 +128,7 @@ void tex_output(bNode *node, bNodeStack **in, bNodeStack *out, TexFn texfn)
 	else
 		dg = out->data;
 	
-	
+	dg->cdata= cdata;
 	dg->fn = texfn;
 	dg->node = node;
 	memcpy(dg->in, in, MAX_SOCKET * sizeof(bNodeStack*));

source/blender/nodes/intern/TEX_util.h

@@ -87,6 +87,7 @@ typedef struct TexParams {
 typedef void(*TexFn) (float *out, TexParams *params, bNode *node, bNodeStack **in, short thread);
 
 typedef struct TexDelegate {
+	TexCallData *cdata;
 	TexFn fn;
 	bNode *node;
 	bNodeStack *in[MAX_SOCKET];
@@ -99,8 +100,8 @@ void tex_input_rgba(float *out, bNodeStack *in, TexParams *params, short thread)
 void tex_input_vec(float *out, bNodeStack *in, TexParams *params, short thread);
 float tex_input_value(bNodeStack *in, TexParams *params, short thread);
 
-void tex_output(bNode *node, bNodeStack **in, bNodeStack *out, TexFn texfn);
-void tex_do_preview(bNode *node, bNodeStack *ns, TexCallData *cdata);
+void tex_output(bNode *node, bNodeStack **in, bNodeStack *out, TexFn texfn, TexCallData *data);
+void tex_do_preview(bNode *node, float *coord, float *col);
 
 void params_from_cdata(TexParams *out, TexCallData *in);
 

source/blender/render/intern/source/shadeinput.c

@@ -1306,7 +1306,7 @@ void shade_input_initialize(ShadeInput *shi, RenderPart *pa, RenderLayer *rl, in
 	
 	shi->sample= sample;
 	shi->thread= pa->thread;
-	shi->do_preview= R.r.scemode & R_NODE_PREVIEW;
+	shi->do_preview= (R.r.scemode & R_MATNODE_PREVIEW) != 0;
 	shi->lay= rl->lay;
 	shi->layflag= rl->layflag;
 	shi->passflag= rl->passflag;

source/blender/render/intern/source/texture.c

@@ -721,7 +721,7 @@ static int evalnodes(Tex *tex, float *texvec, float *dxt, float *dyt, TexResult
 	short rv = TEX_INT;
 	bNodeTree *nodes = tex->nodetree;
 	
-	ntreeTexExecTree(nodes, texres, texvec, dxt, dyt, thread, tex, which_output, R.r.cfra, (R.r.scemode & R_NODE_PREVIEW));
+	ntreeTexExecTree(nodes, texres, texvec, dxt, dyt, thread, tex, which_output, R.r.cfra, (R.r.scemode & R_TEXNODE_PREVIEW) != 0);
 	
 	if(texres->nor) rv |= TEX_NOR;
 	rv |= TEX_RGB;