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, 525 deletions

diff --git a/source/blender/render/intern/include/render_types.h b/source/blender/render/intern/include/render_types.h
index 97224d3aec0..8308b5e76e4 100644
--- a/source/blender/render/intern/include/render_types.h
+++ b/source/blender/render/intern/include/render_types.h
@@ -35,58 +35,19 @@
 /* exposed internal in render module only! */
 /* ------------------------------------------------------------------------- */
 
-#include "DNA_color_types.h"
-#include "DNA_customdata_types.h"
 #include "DNA_scene_types.h"
-#include "DNA_world_types.h"
 #include "DNA_object_types.h"
-#include "DNA_vec_types.h"
 
 #include "BLI_threads.h"
 
 #include "BKE_main.h"
 
 #include "RE_pipeline.h"
-#include "RE_shader_ext.h"	/* TexResult, ShadeResult, ShadeInput */
-#include "sunsky.h"
 
-#include "BLI_sys_types.h" // for intptr_t support
-
-struct Depsgraph;
 struct Object;
-struct MemArena;
-struct VertTableNode;
-struct VlakTableNode;
-struct GHash;
-struct ObjectInstanceRen;
-struct RayObject;
-struct RayFace;
 struct RenderEngine;
 struct ReportList;
 struct Main;
-struct ImagePool;
-
-#define TABLEINITSIZE 1024
-
-typedef struct SampleTables {
-	float centLut[16];
-	float *fmask1[9], *fmask2[9];
-	char cmask[256], *centmask;
-	
-} SampleTables;
-
-typedef struct QMCSampler {
-	struct QMCSampler *next, *prev;
-	int type;
-	int tot;
-	int used;
-	double *samp2d;
-	double offs[BLENDER_MAX_THREADS][2];
-} QMCSampler;
-
-// #define SAMP_TYPE_JITTERED		0  // UNUSED
-#define SAMP_TYPE_HALTON		1
-#define SAMP_TYPE_HAMMERSLEY	2
 
 /* this is handed over to threaded hiding/passes/shading engine */
 typedef struct RenderPart {
@@ -95,24 +56,10 @@ typedef struct RenderPart {
 	RenderResult *result;			/* result of part rendering */
 	ListBase fullresult;			/* optional full sample buffers */
 	
-	int *recto;						/* object table for objects */
-	int *rectp;						/* polygon index table */
-	int *rectz;						/* zbuffer */
-	int *rectmask;					/* negative zmask */
-	intptr_t *rectdaps;					/* delta acum buffer for pixel structs */
-	int *rectbacko;					/* object table for backside sss */
-	int *rectbackp;					/* polygon index table for backside sss */
-	int *rectbackz;					/* zbuffer for backside sss */
-	intptr_t *rectall;					/* buffer for all faces for sss */
-
 	rcti disprect;					/* part coordinates within total picture */
 	int rectx, recty;				/* the size */
 	int nr;							/* nr is partnr */
-	short crop, status;				/* crop is amount of pixels we crop, for filter */
-	short sample;					/* sample can be used by zbuffers */
-	short thread;					/* thread id */
-	
-	char *clipflag;					/* clipflags for part zbuffering */
+	short status;
 } RenderPart;
 
 enum {
@@ -129,10 +76,7 @@ struct Render {
 	int slot;
 	
 	/* state settings */
-	short flag, osa, ok, result_ok;
-	
-	/* due to performance issues, getting initialized from color management settings once on Render initialization */
-	bool scene_color_manage;
+	short flag, ok, result_ok;
 	
 	/* result of rendering */
 	RenderResult *result;
@@ -150,8 +94,6 @@ struct Render {
 							 * without border & crop. convert to long before multiplying together to avoid overflow. */
 	rcti disprect;			/* part within winx winy */
 	rctf viewplane;			/* mapped on winx winy */
-	float viewdx, viewdy;	/* size of 1 pixel */
-	float clipcrop;			/* 2 pixel boundary to prevent clip when filter used */
 	
 	/* final picture width and height (within disprect) */
 	int rectx, recty;
@@ -160,14 +102,7 @@ struct Render {
 	 * partx*xparts can be larger than rectx, in that case last part is smaller */
 	int partx, party;
 	
-	/* values for viewing */
-	float ycor; /* (scene->xasp / scene->yasp), multiplied with 'winy' */
-	
-	float panophi, panosi, panoco, panodxp, panodxv;
-	
-	/* Matrices */
-	float grvec[3];			/* for world */
-	float imat[3][3];		/* copy of viewinv */
+	/* Camera transform, only used by Freestyle. */
 	float viewmat[4][4], viewinv[4][4];
 	float viewmat_orig[4][4];	/* for incremental render */
 	float winmat[4][4];
@@ -176,23 +111,12 @@ struct Render {
 	float clipsta;
 	float clipend;
 	
-	/* samples */
-	SampleTables *samples;
-	float jit[32][2];
-	float mblur_jit[32][2];
-	ListBase *qmcsamplers;
-	int num_qmc_samplers;
-	
-	/* shadow counter, detect shadow-reuse for shaders */
-	int shadowsamplenr[BLENDER_MAX_THREADS];
-
 	/* main, scene, and its full copy of renderdata and world */
 	struct Main *main;
 	Scene *scene;
 	RenderData r;
 	ListBase view_layers;
 	int active_view_layer;
-	World wrld;
 	struct Object *camera_override;
 	unsigned int lay, layer_override;
 	
@@ -202,56 +126,11 @@ struct Render {
 	/* render engine */
 	struct RenderEngine *engine;
 	
-	/* octree tables and variables for raytrace */
-	struct RayObject *raytree;
-	struct RayFace *rayfaces;
-	struct VlakPrimitive *rayprimitives;
-	float maxdist; /* needed for keeping an incorrect behavior of SUN and HEMI lights (avoid breaking old scenes) */
-
-	/* occlusion tree */
-	void *occlusiontree;
-	ListBase strandsurface;
-	
-	/* use this instead of R.r.cfra */
-	float mblur_offs, field_offs;
-	
-	/* render database */
-	int totvlak, totvert, tothalo, totstrand, totlamp;
-	struct HaloRen **sortedhalos;
-
-	ListBase lights;	/* GroupObject pointers */
-	ListBase lampren;	/* storage, for free */
-	
-	ListBase objecttable;
-
-	struct ObjectInstanceRen *objectinstance;
-	ListBase instancetable;
-	int totinstance;
-
-	struct Image *bakebuf;
-	
-	struct GHash *orco_hash;
-
-	struct GHash *sss_hash;
-	ListBase *sss_points;
-	struct Material *sss_mat;
-
-	ListBase customdata_names;
-
-	struct Object *excludeob;
-	ListBase render_volumes_inside;
-	ListBase volumes;
-
 #ifdef WITH_FREESTYLE
 	struct Main *freestyle_bmain;
 	ListBase freestyle_renders;
 #endif
 
-	/* arena for allocating data for use during render, for
-	 * example dynamic TFaces to go in the VlakRen structure.
-	 */
-	struct MemArena *memArena;
-	
 	/* callbacks */
 	void (*display_init)(void *handle, RenderResult *rr);
 	void *dih;
@@ -276,414 +155,14 @@ struct Render {
 
 	struct ReportList *reports;
 
-	struct ImagePool *pool;
-
 	void **movie_ctx_arr;
 	char viewname[MAX_NAME];
 };
 
-/* ------------------------------------------------------------------------- */
-
-struct ISBData;
-
-typedef struct DeepSample {
-	int z;
-	float v;
-} DeepSample;
- 
-typedef struct ShadSampleBuf {
-	struct ShadSampleBuf *next, *prev;
-	intptr_t *zbuf;
-	char *cbuf;
-	DeepSample **deepbuf;
-	int *totbuf;
-} ShadSampleBuf;
-
-typedef struct ShadBuf {
-	/* regular shadowbuffer */
-	short samp, shadhalostep, totbuf;
-	float persmat[4][4];
-	float viewmat[4][4];
-	float winmat[4][4];
-	float *jit, *weight;
-	float d, clipend, pixsize, soft, compressthresh;
-	int co[3];
-	int size, bias;
-	ListBase buffers;
-	
-	/* irregular shadowbufer, result stored per thread */
-	struct ISBData *isb_result[BLENDER_MAX_THREADS];
-} ShadBuf;
-
-/* ------------------------------------------------------------------------- */
-
-typedef struct ObjectRen {
-	struct ObjectRen *next, *prev;
-	struct Object *ob, *par;
-	struct Scene *sce;
-	int index, psysindex, flag, lay;
-
-	float boundbox[2][3];
-
-	int totvert, totvlak, totstrand, tothalo;
-	int vertnodeslen, vlaknodeslen, strandnodeslen, blohalen;
-	struct VertTableNode *vertnodes;
-	struct VlakTableNode *vlaknodes;
-	struct StrandTableNode *strandnodes;
-	struct HaloRen **bloha;
-	struct StrandBuffer *strandbuf;
-
-	char (*mtface)[MAX_CUSTOMDATA_LAYER_NAME];
-	char (*mcol)[MAX_CUSTOMDATA_LAYER_NAME];
-	int  actmtface, actmcol, bakemtface;
-
-	short tangent_mask; /* which tangent layer should be calculated */
-
-	float obmat[4][4];	/* only used in convertblender.c, for instancing */
-
-	/* used on makeraytree */
-	struct RayObject *raytree;
-	struct RayFace *rayfaces;
-	struct VlakPrimitive *rayprimitives;
-	struct ObjectInstanceRen *rayobi;
-	
-} ObjectRen;
-
-typedef struct ObjectInstanceRen {
-	struct ObjectInstanceRen *next, *prev;
-
-	ObjectRen *obr;
-	Object *ob, *par;
-	int index, psysindex, lay;
-
-	float mat[4][4], imat[4][4];
-	float nmat[3][3]; /* nmat is inverse mat tranposed */
-
-	float obmat[4][4], obinvmat[4][4];
-	float localtoviewmat[4][4], localtoviewinvmat[4][4];
-
-	short flag;
-
-	float dupliorco[3], dupliuv[2];
-	float (*duplitexmat)[4];
-	
-	struct VolumePrecache *volume_precache;
-	
-	float *vectors; /* (RE_WINSPEED_ELEMS * VertRen.index) */
-	int totvector;
-	
-	/* used on makeraytree */
-	struct RayObject *raytree;
-	int transform_primitives;
-
-	/* Particle info */
-	float part_index;
-	float part_age;
-	float part_lifetime;
-	float part_size;
-	float part_co[3];
-	float part_vel[3];
-	float part_avel[3];
-
-	unsigned int random_id;
-} ObjectInstanceRen;
-
-/* ------------------------------------------------------------------------- */
-
-typedef struct VertRen {
-	float co[3];
-	float n[3];
-	float *orco;
-	unsigned int flag;	/* in use for clipping zbuffer parts, temp setting stuff in convertblender.c
-						 * only an 'int' because of alignment, could be a char too */
-	float accum;		/* accum for radio weighting, and for strand texco static particles */
-	int index;			/* index allows extending vertren with any property */
-} VertRen;
-
-/* ------------------------------------------------------------------------- */
-
-struct halosort {
-	struct HaloRen *har;
-	int z;
-};
-
-/* ------------------------------------------------------------------------- */
-struct Material;
-struct ImagePool;
-
-typedef struct RadFace {
-	float unshot[3], totrad[3];
-	float norm[3], cent[3], area;
-	int flag;
-} RadFace;
-
-typedef struct VlakRen {
-	struct VertRen *v1, *v2, *v3, *v4;	/* keep in order for ** addressing */
-	float n[3];
-	struct Material *mat;
-	char puno;
-	char flag, ec;
-#ifdef WITH_FREESTYLE
-	char freestyle_edge_mark;
-	char freestyle_face_mark;
-#endif
-	int index;
-} VlakRen;
-
-typedef struct HaloRen {
-	short miny, maxy;
-	float alfa, xs, ys, rad, radsq, sin, cos, co[3], no[3];
-	float hard, b, g, r;
-	int zs, zd;
-	int zBufDist;	/* depth in the z-buffer coordinate system */
-	char starpoints, type, add, tex;
-	char linec, ringc, seed;
-	short flarec; /* used to be a char. why ?*/
-	float hasize;
-	int pixels;
-	unsigned int lay;
-	struct Material *mat;
-	struct ImagePool *pool;
-	bool skip_load_image, texnode_preview;
-} HaloRen;
-
-/* ------------------------------------------------------------------------- */
-
-typedef struct StrandVert {
-	float co[3];
-	float strandco;
-} StrandVert;
-
-typedef struct StrandSurface {
-	struct StrandSurface *next, *prev;
-	ObjectRen obr;
-	int (*face)[4];
-	float (*co)[3];
-	/* for occlusion caching */
-	float (*ao)[3];
-	float (*env)[3];
-	float (*indirect)[3];
-	/* for speedvectors */
-	float (*prevco)[3], (*nextco)[3];
-	int totvert, totface;
-} StrandSurface;
-
-typedef struct StrandBound {
-	int start, end;
-	float boundbox[2][3];
-} StrandBound;
-
-typedef struct StrandBuffer {
-	struct StrandBuffer *next, *prev;
-	struct StrandVert *vert;
-	struct StrandBound *bound;
-	int totvert, totbound;
-
-	struct ObjectRen *obr;
-	struct Material *ma;
-	struct StrandSurface *surface;
-	unsigned int lay;
-	int overrideuv;
-	int flag, maxdepth;
-	float adaptcos, minwidth, widthfade;
-	
-	float maxwidth;	/* for cliptest of strands in blender unit */
-	
-	float winmat[4][4];
-	int winx, winy;
-} StrandBuffer;
-
-typedef struct StrandRen {
-	StrandVert *vert;
-	StrandBuffer *buffer;
-	int totvert, flag;
-	int clip, index;
-	float orco[3];
-} StrandRen;
-
-/* ------------------------------------------------------------------------- */
-
-typedef struct VolumeOb {
-	struct VolumeOb *next, *prev;
-	struct Material *ma;
-	struct ObjectRen *obr;
-} VolumeOb;
-
-typedef struct MatInside {
-	struct MatInside *next, *prev;
-	struct Material *ma;
-	struct ObjectInstanceRen *obi;
-} MatInside;
-
-typedef struct VolPrecachePart {
-	struct VolPrecachePart *next, *prev;
-	struct RayObject *tree;
-	struct ShadeInput *shi;
-	struct ObjectInstanceRen *obi;
-	float viewmat[4][4];
-	int num;
-	int minx, maxx;
-	int miny, maxy;
-	int minz, maxz;
-	int res[3];
-	float bbmin[3];
-	float voxel[3];
-	struct Render *re;
-} VolPrecachePart;
-
-typedef struct VolumePrecache {
-	int res[3];
-	float *bbmin, *bbmax;
-	float *data_r;
-	float *data_g;
-	float *data_b;
-} VolumePrecache;
-
-/* ------------------------------------------------------------------------- */
-
-struct LampRen;
-struct MTex;
-
-/**
- * For each lamp in a scene, a LampRen is created. It determines the
- * properties of a lightsource.
- */
-
-typedef struct LampShadowSubSample {
-	int samplenr;
-	float shadfac[4];	/* rgba shadow */
-} LampShadowSubSample;
-
-typedef struct LampShadowSample {
-	LampShadowSubSample s[16];	/* MAX OSA */
-} LampShadowSample;
-
-typedef struct LampRen {
-	struct LampRen *next, *prev;
-	
-	float xs, ys, dist;
-	float co[3];
-	short type;
-	int mode;
-	float r, g, b, k;
-	float shdwr, shdwg, shdwb;
-	float energy, haint;
-	int lay;
-	float spotsi, spotbl;
-	float vec[3];
-	float xsp, ysp, distkw, inpr;
-	float halokw, halo;
-	
-	short falloff_type;
-	float ld1, ld2;
-	float coeff_const, coeff_lin, coeff_quad;
-	struct CurveMapping *curfalloff;
-
-	/* copied from Lamp, to decouple more rendering stuff */
-	/** Size of the shadowbuffer */
-	short bufsize;
-	/** Number of samples for the shadows */
-	short samp;
-	/** Softness factor for shadow */
-	float soft;
-	/** amount of subsample buffers and type of filter for sampling */
-	short buffers, filtertype;
-	/** shadow buffer type (regular, irregular) */
-	short buftype;
-	/** autoclip */
-	short bufflag;
-	/** shadow plus halo: detail level */
-	short shadhalostep;
-	/** Near clip of the lamp */
-	float clipsta;
-	/** Far clip of the lamp */
-	float clipend;
-	/** A small depth offset to prevent self-shadowing. */
-	float bias;
-	/* Compression threshold for deep shadow maps */
-	float compressthresh;
-	
-	short ray_samp, ray_sampy, ray_sampz, ray_samp_method, ray_samp_type, area_shape, ray_totsamp;
-	short xold[BLENDER_MAX_THREADS], yold[BLENDER_MAX_THREADS];	/* last jitter table for area lights */
-	float area_size, area_sizey, area_sizez;
-	float adapt_thresh;
-
-	/* sun/sky */
-	struct SunSky *sunsky;
-	
-	struct ShadBuf *shb;
-	float *jitter;
-	
-	float imat[3][3];
-	float spottexfac;
-	float sh_invcampos[3], sh_zfac;	/* sh_= spothalo */
-
-	float lampmat[4][4];	/* worls space lamp matrix, used for scene rotation */
-
-	float mat[3][3];	/* 3x3 part from lampmat x viewmat */
-	float area[8][3], areasize;
-	
-	/* passes & node shader support: all shadow info for a pixel */
-	LampShadowSample *shadsamp;
-	
-	/* ray optim */
-	struct RayObject *last_hit[BLENDER_MAX_THREADS];
-	
-	struct MTex *mtex[MAX_MTEX];
-
-	/* threading */
-	int thread_assigned;
-	int thread_ready;
-} LampRen;
-
 /* **************** defines ********************* */
 
-/* R.r.mode flag is same as for renderdata */
-
 /* R.flag */
-#define R_ZTRA			1
-#define R_HALO			2
-#define R_SEC_FIELD		4
-#define R_LAMPHALO		8
-#define R_NEED_TANGENT	16
-#define R_BAKE_TRACE	32
-#define R_BAKING		64
-#define R_ANIMATION		128
-#define R_NEED_VCOL		256
-
-/* vlakren->flag (vlak = face in dutch) char!!! */
-#define R_SMOOTH		1
-#define R_HIDDEN		2
-/* strand flag, means special handling */
-#define R_STRAND		4
-#define R_FULL_OSA		8
-#define R_FACE_SPLIT	16
-/* Tells render to divide face other way. */
-#define R_DIVIDE_24		32	
-/* vertex normals are tangent or view-corrected vector, for hair strands */
-#define R_TANGENT		64		
-#define R_TRACEBLE		128
-
-/* vlakren->freestyle_edge_mark */
-#ifdef WITH_FREESTYLE
-#  define R_EDGE_V1V2		1
-#  define R_EDGE_V2V3		2
-#  define R_EDGE_V3V4		4
-#  define R_EDGE_V3V1		4
-#  define R_EDGE_V4V1		8
-#endif
-
-/* strandbuffer->flag */
-#define R_STRAND_BSPLINE	1
-#define R_STRAND_B_UNITS	2
-
-/* objectren->flag */
-#define R_INSTANCEABLE		1
-
-/* objectinstance->flag */
-#define R_DUPLI_TRANSFORMED	1
-#define R_ENV_TRANSFORMED	2
-#define R_TRANSFORMED		(1|2)
+#define R_ANIMATION		1
 
 #endif /* __RENDER_TYPES_H__ */