Remove Blender Internal and legacy viewport from Blender 2.8.

Brecht authored this commit, but he gave me the honours to actually
do it. Here it goes; Blender Internal. Bye bye, you did great!

* Point density, voxel data, ocean, environment map textures were removed,
  as these only worked within BI rendering. Note that the ocean modifier
  and the Cycles point density shader node continue to work.
* Dynamic paint using material shading was removed, as this only worked
  with BI. If we ever wanted to support this again probably it should go
  through the baking API.
* GPU shader export through the Python API was removed. This only worked
  for the old BI GLSL shaders, which no longer exists. Doing something
  similar for Eevee would be significantly more complicated because it
  uses a lot of multiplass rendering and logic outside the shader, it's
  probably impractical.
* Collada material import / export code is mostly gone, as it only worked
  for BI materials. We need to add Cycles / Eevee material support at some
  point.
* The mesh noise operator was removed since it only worked with BI
  material texture slots. A displacement modifier can be used instead.
* The delete texture paint slot operator was removed since it only worked
  for BI material texture slots. Could be added back with node support.

* Not all legacy viewport features are supported in the new viewport, but
  their code was removed. If we need to bring anything back we can look at
  older git revisions.
* There is some legacy viewport code that I could not remove yet, and some
  that I probably missed.
* Shader node execution code was left mostly intact, even though it is not
  used anywhere now. We may eventually use this to replace the texture
  nodes with Cycles / Eevee shader nodes.

* The Cycles Bake panel now includes settings for baking multires normal
  and displacement maps. The underlying code needs to be merged properly,
  and we plan to add back support for multires AO baking and add support
  to Cycles baking for features like vertex color, displacement, and other
  missing baking features.

* This commit removes DNA and the Python API for BI material, lamp, world
  and scene settings. This breaks a lot of addons.
* There is more DNA that can be removed or renamed, where Cycles or Eevee
  are reusing some old BI properties but the names are not really correct
  anymore.
* Texture slots for materials, lamps and world were removed. They remain
  for brushes, particles and freestyle linestyles.
* 'BLENDER_RENDER' remains in the COMPAT_ENGINES of UI panels. Cycles and
  other renderers use this to find all panels to show, minus a few panels
  that they have their own replacement for.

1 files changed, 4 insertions, 234 deletions

diff --git a/source/blender/editors/render/render_shading.c b/source/blender/editors/render/render_shading.c
index 270ba2a7947..c5787a1d46c 100644
--- a/source/blender/editors/render/render_shading.c
+++ b/source/blender/editors/render/render_shading.c
@@ -460,7 +460,6 @@ void OBJECT_OT_material_slot_move(wmOperatorType *ot)
 
 static int new_material_exec(bContext *C, wmOperator *UNUSED(op))
 {
-	Scene *scene = CTX_data_scene(C);
 	Material *ma = CTX_data_pointer_get_type(C, "material", &RNA_Material).data;
 	Main *bmain = CTX_data_main(C);
 	PointerRNA ptr, idptr;
@@ -472,11 +471,8 @@ static int new_material_exec(bContext *C, wmOperator *UNUSED(op))
 	}
 	else {
 		ma = BKE_material_add(bmain, DATA_("Material"));
-
-		if (BKE_scene_use_new_shading_nodes(scene)) {
-			ED_node_shader_default(C, &ma->id);
-			ma->use_nodes = true;
-		}
+		ED_node_shader_default(C, &ma->id);
+		ma->use_nodes = true;
 	}
 
 	/* hook into UI */
@@ -536,14 +532,6 @@ static int new_texture_exec(bContext *C, wmOperator *UNUSED(op))
 		 * pointer use also increases user, so this compensates it */
 		id_us_min(&tex->id);
 
-		if (ptr.id.data && GS(((ID *)ptr.id.data)->name) == ID_MA &&
-		    RNA_property_pointer_get(&ptr, prop).id.data == NULL)
-		{
-			/* In case we are assigning new texture to a material, and active slot was empty, reset 'use' flag. */
-			Material *ma = (Material *)ptr.id.data;
-			ma->septex &= ~(1 << ma->texact);
-		}
-
 		RNA_id_pointer_create(&tex->id, &idptr);
 		RNA_property_pointer_set(&ptr, prop, idptr);
 		RNA_property_update(C, &ptr, prop);
@@ -572,7 +560,6 @@ void TEXTURE_OT_new(wmOperatorType *ot)
 
 static int new_world_exec(bContext *C, wmOperator *UNUSED(op))
 {
-	Scene *scene = CTX_data_scene(C);
 	World *wo = CTX_data_pointer_get_type(C, "world", &RNA_World).data;
 	Main *bmain = CTX_data_main(C);
 	PointerRNA ptr, idptr;
@@ -584,11 +571,8 @@ static int new_world_exec(bContext *C, wmOperator *UNUSED(op))
 	}
 	else {
 		wo = BKE_world_add(bmain, DATA_("World"));
-
-		if (BKE_scene_use_new_shading_nodes(scene)) {
-			ED_node_shader_default(C, &wo->id);
-			wo->use_nodes = true;
-		}
+		ED_node_shader_default(C, &wo->id);
+		wo->use_nodes = true;
 	}
 
 	/* hook into UI */
@@ -1457,15 +1441,6 @@ static int texture_slot_move_exec(bContext *C, wmOperator *op)
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, act - 1, -1, 0);
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, act, act - 1, 0);
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, -1, act, 0);
-
-				if (GS(id->name) == ID_MA) {
-					Material *ma = (Material *)id;
-					int mtexuse = ma->septex & (1 << act);
-					ma->septex &= ~(1 << act);
-					ma->septex |= (ma->septex & (1 << (act - 1))) << 1;
-					ma->septex &= ~(1 << (act - 1));
-					ma->septex |= mtexuse >> 1;
-				}
 				
 				set_active_mtex(id, act - 1);
 			}
@@ -1479,15 +1454,6 @@ static int texture_slot_move_exec(bContext *C, wmOperator *op)
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, act + 1, -1, 0);
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, act, act + 1, 0);
 				BKE_animdata_fix_paths_rename(id, adt, NULL, "texture_slots", NULL, NULL, -1, act, 0);
-
-				if (GS(id->name) == ID_MA) {
-					Material *ma = (Material *)id;
-					int mtexuse = ma->septex & (1 << act);
-					ma->septex &= ~(1 << act);
-					ma->septex |= (ma->septex & (1 << (act + 1))) >> 1;
-					ma->septex &= ~(1 << (act + 1));
-					ma->septex |= mtexuse << 1;
-				}
 				
 				set_active_mtex(id, act + 1);
 			}
@@ -1524,180 +1490,6 @@ void TEXTURE_OT_slot_move(wmOperatorType *ot)
 
 
 
-/********************** environment map operators *********************/
-
-static int save_envmap(wmOperator *op, Scene *scene, EnvMap *env, char *path, const char imtype)
-{
-	PropertyRNA *prop;
-	float layout[12];
-
-	if ((prop = RNA_struct_find_property(op->ptr, "layout"))) {
-		RNA_property_float_get_array(op->ptr, prop, layout);
-	}
-	else {
-		memcpy(layout, default_envmap_layout, sizeof(layout));
-	}
-
-	if (RE_WriteEnvmapResult(op->reports, scene, env, path, imtype, layout)) {
-		return OPERATOR_FINISHED;
-	}
-	else {
-		return OPERATOR_CANCELLED;
-	}
-
-}
-
-static int envmap_save_exec(bContext *C, wmOperator *op)
-{
-	Tex *tex = CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
-	Scene *scene = CTX_data_scene(C);
-	//int imtype = RNA_enum_get(op->ptr, "file_type");
-	char imtype = scene->r.im_format.imtype;
-	char path[FILE_MAX];
-	
-	RNA_string_get(op->ptr, "filepath", path);
-	
-	if (scene->r.scemode & R_EXTENSION) {
-		BKE_image_path_ensure_ext_from_imformat(path, &scene->r.im_format);
-	}
-	
-	WM_cursor_wait(1);
-	
-	save_envmap(op, scene, tex->env, path, imtype);
-	
-	WM_cursor_wait(0);
-	
-	WM_event_add_notifier(C, NC_TEXTURE, tex);
-	
-	return OPERATOR_FINISHED;
-}
-
-static int envmap_save_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
-{
-	//Scene *scene= CTX_data_scene(C);
-	
-	if (RNA_struct_property_is_set(op->ptr, "filepath"))
-		return envmap_save_exec(C, op);
-
-	//RNA_enum_set(op->ptr, "file_type", scene->r.im_format.imtype);
-	RNA_string_set(op->ptr, "filepath", G.main->name);
-	WM_event_add_fileselect(C, op);
-	
-	return OPERATOR_RUNNING_MODAL;
-}
-
-static int envmap_save_poll(bContext *C)
-{
-	Tex *tex = CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
-
-	if (!tex) 
-		return 0;
-	if (!tex->env || !tex->env->ok)
-		return 0;
-	if (tex->env->cube[1] == NULL)
-		return 0;
-	
-	return 1;
-}
-
-void TEXTURE_OT_envmap_save(wmOperatorType *ot)
-{
-	PropertyRNA *prop;
-	/* identifiers */
-	ot->name = "Save Environment Map";
-	ot->idname = "TEXTURE_OT_envmap_save";
-	ot->description = "Save the current generated Environment map to an image file";
-	
-	/* api callbacks */
-	ot->exec = envmap_save_exec;
-	ot->invoke = envmap_save_invoke;
-	ot->poll = envmap_save_poll;
-	
-	/* flags */
-	ot->flag = OPTYPE_REGISTER | OPTYPE_INTERNAL; /* no undo since this doesnt modify the env-map */
-	
-	/* properties */
-	prop = RNA_def_float_array(ot->srna, "layout", 12, default_envmap_layout, 0.0f, 0.0f,
-	                           "File layout",
-	                           "Flat array describing the X,Y position of each cube face in the output image, "
-	                           "where 1 is the size of a face - order is [+Z -Z +Y -X -Y +X] "
-	                           "(use -1 to skip a face)", 0.0f, 0.0f);
-	RNA_def_property_flag(prop, PROP_HIDDEN);
-
-	WM_operator_properties_filesel(
-	        ot, FILE_TYPE_FOLDER | FILE_TYPE_IMAGE | FILE_TYPE_MOVIE, FILE_SPECIAL, FILE_SAVE,
-	        WM_FILESEL_FILEPATH, FILE_DEFAULTDISPLAY, FILE_SORT_ALPHA);
-}
-
-static int envmap_clear_exec(bContext *C, wmOperator *UNUSED(op))
-{
-	Tex *tex = CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
-	
-	BKE_texture_envmap_free_data(tex->env);
-	
-	WM_event_add_notifier(C, NC_TEXTURE | NA_EDITED, tex);
-	
-	return OPERATOR_FINISHED;
-}
-
-static int envmap_clear_poll(bContext *C)
-{
-	Tex *tex = CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
-	
-	if (!tex) 
-		return 0;
-	if (!tex->env || !tex->env->ok)
-		return 0;
-	if (tex->env->cube[1] == NULL)
-		return 0;
-	
-	return 1;
-}
-
-void TEXTURE_OT_envmap_clear(wmOperatorType *ot)
-{
-	/* identifiers */
-	ot->name = "Clear Environment Map";
-	ot->idname = "TEXTURE_OT_envmap_clear";
-	ot->description = "Discard the environment map and free it from memory";
-	
-	/* api callbacks */
-	ot->exec = envmap_clear_exec;
-	ot->poll = envmap_clear_poll;
-	
-	/* flags */
-	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO | OPTYPE_INTERNAL;
-}
-
-static int envmap_clear_all_exec(bContext *C, wmOperator *UNUSED(op))
-{
-	Main *bmain = CTX_data_main(C);
-	Tex *tex;
-	
-	for (tex = bmain->tex.first; tex; tex = tex->id.next)
-		if (tex->env)
-			BKE_texture_envmap_free_data(tex->env);
-	
-	WM_event_add_notifier(C, NC_TEXTURE | NA_EDITED, tex);
-	
-	return OPERATOR_FINISHED;
-}
-
-void TEXTURE_OT_envmap_clear_all(wmOperatorType *ot)
-{
-	/* identifiers */
-	ot->name = "Clear All Environment Maps";
-	ot->idname = "TEXTURE_OT_envmap_clear_all";
-	ot->description = "Discard all environment maps in the .blend file and free them from memory";
-	
-	/* api callbacks */
-	ot->exec = envmap_clear_all_exec;
-	ot->poll = envmap_clear_poll;
-	
-	/* flags */
-	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
-}
-
 /********************** material operators *********************/
 
 /* material copy/paste */
@@ -1769,17 +1561,6 @@ static void copy_mtex_copybuf(ID *id)
 	MTex **mtex = NULL;
 	
 	switch (GS(id->name)) {
-		case ID_MA:
-			mtex = &(((Material *)id)->mtex[(int)((Material *)id)->texact]);
-			break;
-		case ID_LA:
-			mtex = &(((Lamp *)id)->mtex[(int)((Lamp *)id)->texact]);
-			// la->mtex[(int)la->texact] // TODO
-			break;
-		case ID_WO:
-			mtex = &(((World *)id)->mtex[(int)((World *)id)->texact]);
-			// mtex= wrld->mtex[(int)wrld->texact]; // TODO
-			break;
 		case ID_PA:
 			mtex = &(((ParticleSettings *)id)->mtex[(int)((ParticleSettings *)id)->texact]);
 			break;
@@ -1807,17 +1588,6 @@ static void paste_mtex_copybuf(ID *id)
 		return;
 	
 	switch (GS(id->name)) {
-		case ID_MA:
-			mtex = &(((Material *)id)->mtex[(int)((Material *)id)->texact]);
-			break;
-		case ID_LA:
-			mtex = &(((Lamp *)id)->mtex[(int)((Lamp *)id)->texact]);
-			// la->mtex[(int)la->texact] // TODO
-			break;
-		case ID_WO:
-			mtex = &(((World *)id)->mtex[(int)((World *)id)->texact]);
-			// mtex= wrld->mtex[(int)wrld->texact]; // TODO
-			break;
 		case ID_PA:
 			mtex = &(((ParticleSettings *)id)->mtex[(int)((ParticleSettings *)id)->texact]);
 			break;