Cleanup: remove unused DAG_EVAL_PREVIEW mode.

source/blender/blenkernel/intern/object_dupli.c

@@ -498,7 +498,7 @@ static void make_duplis_verts(const DupliContext *ctx)
 {
 	Scene *scene = ctx->scene;
 	Object *parent = ctx->object;
-	bool use_texcoords = ELEM(DEG_get_mode(ctx->depsgraph), DAG_EVAL_RENDER, DAG_EVAL_PREVIEW);
+	bool use_texcoords = (DEG_get_mode(ctx->depsgraph) == DAG_EVAL_RENDER);
 	VertexDupliData vdd;
 
 	vdd.ctx = ctx;
@@ -702,7 +702,7 @@ static void make_child_duplis_faces(const DupliContext *ctx, void *userdata, Obj
 	float (*orco)[3] = fdd->orco;
 	MLoopUV *mloopuv = fdd->mloopuv;
 	int a, totface = fdd->totface;
-	bool use_texcoords = ELEM(DEG_get_mode(ctx->depsgraph), DAG_EVAL_RENDER, DAG_EVAL_PREVIEW);
+	bool use_texcoords = (DEG_get_mode(ctx->depsgraph) == DAG_EVAL_RENDER);
 	float child_imat[4][4];
 	DupliObject *dob;
 
@@ -768,7 +768,7 @@ static void make_duplis_faces(const DupliContext *ctx)
 {
 	Scene *scene = ctx->scene;
 	Object *parent = ctx->object;
-	bool use_texcoords = ELEM(DEG_get_mode(ctx->depsgraph), DAG_EVAL_RENDER, DAG_EVAL_PREVIEW);
+	bool use_texcoords = (DEG_get_mode(ctx->depsgraph) == DAG_EVAL_RENDER);
 	FaceDupliData fdd;
 
 	fdd.use_scale = ((parent->transflag & OB_DUPLIFACES_SCALE) != 0);
@@ -821,7 +821,7 @@ static void make_duplis_particle_system(const DupliContext *ctx, ParticleSystem
 	Scene *scene = ctx->scene;
 	Object *par = ctx->object;
 	bool for_render = DEG_get_mode(ctx->depsgraph) == DAG_EVAL_RENDER;
-	bool use_texcoords = ELEM(DEG_get_mode(ctx->depsgraph), DAG_EVAL_RENDER, DAG_EVAL_PREVIEW);
+	bool use_texcoords = for_render;
 
 	Object *ob = NULL, **oblist = NULL, obcopy, *obcopylist = NULL;
 	DupliObject *dob;

source/blender/depsgraph/DEG_depsgraph.h

@@ -70,8 +70,7 @@ struct ViewLayer;
 
 typedef enum eEvaluationMode {
 	DAG_EVAL_VIEWPORT       = 0,    /* evaluate for OpenGL viewport */
-	DAG_EVAL_PREVIEW        = 1,    /* evaluate for render with preview settings */
-	DAG_EVAL_RENDER         = 2,    /* evaluate for render purposes */
+	DAG_EVAL_RENDER         = 1,    /* evaluate for render purposes */
 } eEvaluationMode;
 
 /* DagNode->eval_flags */

source/blender/depsgraph/intern/depsgraph_query_iter.cc

@@ -212,7 +212,6 @@ void DEG_iterator_objects_begin(BLI_Iterator *iter, DEGObjectIterData *data)
 	data->id_node_index = 0;
 	data->num_id_nodes = num_id_nodes;
 	eEvaluationMode eval_mode = DEG_get_mode(depsgraph);
-	/* Viewport rendered mode is DAG_EVAL_PREVIEW but still treated as viewport. */
 	data->visibility_check = (eval_mode == DAG_EVAL_RENDER)
 	                         ? OB_VISIBILITY_CHECK_FOR_RENDER
 	                         : OB_VISIBILITY_CHECK_FOR_VIEWPORT;

source/blender/makesdna/DNA_scene_types.h

@@ -1623,7 +1623,7 @@ enum {
 /* #define R_DEPRECATED		0x10000 */
 /* #define R_RECURS_PROTECTION	0x20000 */
 #define R_TEXNODE_PREVIEW	0x40000
-#define R_VIEWPORT_PREVIEW	0x80000
+/* #define R_VIEWPORT_PREVIEW	0x80000 */
 #define R_EXR_CACHE_FILE	0x100000
 #define R_MULTIVIEW			0x200000
 

source/blender/makesrna/intern/rna_depsgraph.c

@@ -474,7 +474,6 @@ static void rna_def_depsgraph(BlenderRNA *brna)
 
 	static EnumPropertyItem enum_depsgraph_mode_items[] = {
 		{DAG_EVAL_VIEWPORT, "VIEWPORT", 0, "Viewport", "Viewport non-rendered mode"},
-		{DAG_EVAL_PREVIEW, "PREVIEW", 0, "Preview", "Viewport rendered draw mode"},
 		{DAG_EVAL_RENDER, "RENDER", 0, "Render", "Render"},
 		{0, NULL, 0, NULL, NULL}
 	};

source/blender/render/intern/source/pipeline.c

@@ -768,7 +768,7 @@ void RE_InitState(Render *re, Render *source, RenderData *rd,
 	/* if preview render, we try to keep old result */
 	BLI_rw_mutex_lock(&re->resultmutex, THREAD_LOCK_WRITE);
 
-	if (re->r.scemode & (R_BUTS_PREVIEW|R_VIEWPORT_PREVIEW)) {
+	if (re->r.scemode & R_BUTS_PREVIEW) {
 		if (had_freestyle || (re->r.mode & R_EDGE_FRS)) {
 			/* freestyle manipulates render layers so always have to free */
 			render_result_free(re->result);
@@ -806,10 +806,6 @@ void RE_InitState(Render *re, Render *source, RenderData *rd,
 		render_result_view_new(re->result, "");
 	}
 
-	eEvaluationMode mode = (re->r.scemode & R_VIEWPORT_PREVIEW) ? DAG_EVAL_PREVIEW : DAG_EVAL_RENDER;
-	/* This mode should have been set in the Depsgraph immediately when it was created. */
-	(void)mode;
-
 	/* ensure renderdatabase can use part settings correct */
 	RE_parts_clamp(re);