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, 7 insertions, 15 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 2907b568c00..d85f4095eb9 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -498,7 +498,6 @@ struct bNode   *nodeGetActiveTexture(struct bNodeTree *ntree);
 void            nodeUpdate(struct bNodeTree *ntree, struct bNode *node);
 bool            nodeUpdateID(struct bNodeTree *ntree, struct ID *id);
 void            nodeUpdateInternalLinks(struct bNodeTree *ntree, struct bNode *node);
-void            nodeSynchronizeID(struct bNode *node, bool copy_to_id);
 
 int             nodeSocketIsHidden(struct bNodeSocket *sock);
 void            ntreeTagUsedSockets(struct bNodeTree *ntree);
@@ -702,24 +701,22 @@ void BKE_nodetree_remove_layer_n(struct bNodeTree *ntree, struct Scene *scene, c
 /* -------------------------------------------------------------------- */
 /** \name Shader Nodes
  * \{ */
-struct ShadeInput;
-struct ShadeResult;
 
 /* note: types are needed to restore callbacks, don't change values */
 /* range 1 - 100 is reserved for common nodes */
 /* using toolbox, we add node groups by assuming the values below don't exceed NODE_GROUP_MENU for now */
 
-#define SH_NODE_OUTPUT		1
+//#define SH_NODE_OUTPUT		1
 
-#define SH_NODE_MATERIAL	100
+//#define SH_NODE_MATERIAL	100
 #define SH_NODE_RGB			101
 #define SH_NODE_VALUE		102
 #define SH_NODE_MIX_RGB		103
 #define SH_NODE_VALTORGB	104
 #define SH_NODE_RGBTOBW		105
-#define SH_NODE_TEXTURE		106
+//#define SH_NODE_TEXTURE		106
 #define SH_NODE_NORMAL		107
-#define SH_NODE_GEOMETRY	108
+//#define SH_NODE_GEOMETRY	108
 #define SH_NODE_MAPPING		109
 #define SH_NODE_CURVE_VEC	110
 #define SH_NODE_CURVE_RGB	111
@@ -727,7 +724,7 @@ struct ShadeResult;
 #define SH_NODE_MATH		115
 #define SH_NODE_VECT_MATH	116
 #define SH_NODE_SQUEEZE		117
-#define SH_NODE_MATERIAL_EXT	118
+//#define SH_NODE_MATERIAL_EXT	118
 #define SH_NODE_INVERT		119
 #define SH_NODE_SEPRGB		120
 #define SH_NODE_COMBRGB		121
@@ -813,12 +810,7 @@ struct ShadeResult;
 
 struct bNodeTreeExec *ntreeShaderBeginExecTree(struct bNodeTree *ntree);
 void            ntreeShaderEndExecTree(struct bNodeTreeExec *exec);
-bool            ntreeShaderExecTree(struct bNodeTree *ntree, struct ShadeInput *shi, struct ShadeResult *shr);
-void            ntreeShaderGetTexcoMode(struct bNodeTree *ntree, int osa, short *texco, int *mode);
-
-/* switch material render loop */
-extern void (*node_shader_lamp_loop)(struct ShadeInput *, struct ShadeResult *);
-void            set_node_shader_lamp_loop(void (*lamp_loop_func)(struct ShadeInput *, struct ShadeResult *));
+bool            ntreeShaderExecTree(struct bNodeTree *ntree, int thread);
 
 void            ntreeGPUMaterialNodes(struct bNodeTree *ntree, struct GPUMaterial *mat, short compatibility);
 void            ntreeGPUMaterialDomain(struct bNodeTree *ntree, bool *has_surface_output, bool *has_volume_output);
@@ -1051,7 +1043,7 @@ struct bNodeTreeExec *ntreeTexBeginExecTree(struct bNodeTree *ntree);
 void ntreeTexEndExecTree(struct bNodeTreeExec *exec);
 int ntreeTexExecTree(struct bNodeTree *ntree, struct TexResult *target,
                      float coord[3], float dxt[3], float dyt[3], int osatex, const short thread,
-                     struct Tex *tex, short which_output, int cfra, int preview, struct ShadeInput *shi, struct MTex *mtex);
+                     struct Tex *tex, short which_output, int cfra, int preview, struct MTex *mtex);
 /** \} */
 
 void init_nodesystem(void);