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, 0 insertions, 712 deletions

diff --git a/source/blender/gpu/intern/gpu_draw.c b/source/blender/gpu/intern/gpu_draw.c
index 5d9270223ab..6b768d4bdd6 100644
--- a/source/blender/gpu/intern/gpu_draw.c
+++ b/source/blender/gpu/intern/gpu_draw.c
@@ -72,7 +72,6 @@
 #include "BKE_DerivedMesh.h"
 
 #include "GPU_basic_shader.h"
-#include "GPU_buffers.h"
 #include "GPU_draw.h"
 #include "GPU_extensions.h"
 #include "GPU_material.h"
@@ -240,38 +239,6 @@ static unsigned int *gpu_get_image_bindcode(Image *ima, GLenum textarget)
 	return bind;
 }
 
-static void gpu_set_alpha_blend(GPUBlendMode alphablend)
-{
-	if (alphablend == GPU_BLEND_SOLID) {
-		glDisable(GL_BLEND);
-		glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
-		glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-	}
-	else if (alphablend == GPU_BLEND_ADD) {
-		glEnable(GL_BLEND);
-		glBlendFunc(GL_ONE, GL_ONE);
-		glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
-	}
-	else if (ELEM(alphablend, GPU_BLEND_ALPHA, GPU_BLEND_ALPHA_SORT)) {
-		glEnable(GL_BLEND);
-		glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
-
-		/* for OpenGL render we use the alpha channel, this makes alpha blend correct */
-		glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-
-		/* if U.glalphaclip == 1.0, some cards go bonkers...
-		 * turn off alpha test in this case */
-
-	}
-	else if (alphablend == GPU_BLEND_CLIP) {
-		glDisable(GL_BLEND);
-		glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
-	}
-	else if (alphablend == GPU_BLEND_ALPHA_TO_COVERAGE) {
-		glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE);
-	}
-}
-
 typedef struct VerifyThreadData {
 	ImBuf *ibuf;
 	float *srgb_frect;
@@ -1038,9 +1005,6 @@ void GPU_free_unused_buffers(void)
 	BLI_linklist_free(image_free_queue, NULL);
 	image_free_queue = NULL;
 
-	/* vbo buffers */
-	GPU_global_buffer_pool_free_unused();
-
 	BLI_thread_unlock(LOCK_OPENGL);
 }
 
@@ -1120,652 +1084,6 @@ void GPU_free_images_old(void)
 	}
 }
 
-
-/* OpenGL Materials */
-
-#define FIXEDMAT 8
-
-/* OpenGL state caching for materials */
-
-typedef struct GPUMaterialFixed {
-	float diff[3];
-	float spec[3];
-	int hard;
-	float alpha;
-} GPUMaterialFixed;
-
-static struct GPUMaterialState {
-	GPUMaterialFixed (*matbuf);
-	GPUMaterialFixed matbuf_fixed[FIXEDMAT];
-	int totmat;
-
-	/* set when called inside GPU_begin_object_materials / GPU_end_object_materials
-	 * otherwise calling GPU_object_material_bind returns zero */
-	bool is_enabled;
-
-	Material **gmatbuf;
-	Material *gmatbuf_fixed[FIXEDMAT];
-	Material *gboundmat;
-	Object *gob;
-	DupliObject *dob;
-	Scene *gscene;
-	int glay;
-	float (*gviewmat)[4];
-	float (*gviewinv)[4];
-	float (*gviewcamtexcofac);
-
-	bool backface_culling;
-	bool two_sided_lighting;
-
-	GPUBlendMode *alphablend;
-	GPUBlendMode alphablend_fixed[FIXEDMAT];
-	bool use_alpha_pass, is_alpha_pass;
-	bool use_matcaps;
-
-	int lastmatnr, lastretval;
-	GPUBlendMode lastalphablend;
-	bool is_opensubdiv;
-} GMS = {NULL};
-
-/* fixed function material, alpha handed by caller */
-static void gpu_material_to_fixed(
-        GPUMaterialFixed *smat, const Material *bmat, const int gamma, const Object *ob,
-        const int new_shading_nodes, const bool dimdown)
-{
-	if (bmat->mode & MA_SHLESS) {
-		copy_v3_v3(smat->diff, &bmat->r);
-
-		if (gamma)
-			linearrgb_to_srgb_v3_v3(smat->diff, smat->diff);
-
-		zero_v3(smat->spec);
-		smat->alpha = 1.0f;
-		smat->hard = 0;
-	}
-	else if (new_shading_nodes) {
-		copy_v3_v3(smat->diff, &bmat->r);
-		copy_v3_v3(smat->spec, &bmat->specr);
-		smat->alpha = 1.0f;
-		smat->hard = CLAMPIS(bmat->har, 0, 128);
-
-		if (dimdown) {
-			mul_v3_fl(smat->diff, 0.8f);
-			mul_v3_fl(smat->spec, 0.5f);
-		}
-
-		if (gamma) {
-			linearrgb_to_srgb_v3_v3(smat->diff, smat->diff);
-			linearrgb_to_srgb_v3_v3(smat->spec, smat->spec);
-		}
-	}
-	else {
-		mul_v3_v3fl(smat->diff, &bmat->r, bmat->ref + bmat->emit);
-
-		if (bmat->shade_flag & MA_OBCOLOR)
-			mul_v3_v3(smat->diff, ob->col);
-
-		mul_v3_v3fl(smat->spec, &bmat->specr, bmat->spec);
-		smat->hard = CLAMPIS(bmat->har, 1, 128);
-		smat->alpha = 1.0f;
-
-		if (gamma) {
-			linearrgb_to_srgb_v3_v3(smat->diff, smat->diff);
-			linearrgb_to_srgb_v3_v3(smat->spec, smat->spec);
-		}
-	}
-}
-
-static Material *gpu_active_node_material(Material *ma)
-{
-	if (ma && ma->use_nodes && ma->nodetree) {
-		bNode *node = nodeGetActiveID(ma->nodetree, ID_MA);
-
-		if (node)
-			return (Material *)node->id;
-		else
-			return NULL;
-	}
-
-	return ma;
-}
-
-void GPU_begin_dupli_object(DupliObject *dob)
-{
-	GMS.dob = dob;
-}
-
-void GPU_end_dupli_object(void)
-{
-	GMS.dob = NULL;
-}
-
-void GPU_begin_object_materials(
-        View3D *v3d, RegionView3D *rv3d, Scene *scene, ViewLayer *UNUSED(view_layer), Object *ob,
-        bool glsl, bool *do_alpha_after)
-{
-	Material *ma;
-	GPUMaterial *gpumat;
-	GPUBlendMode alphablend;
-	DupliObject *dob;
-	int a;
-	const bool gamma = BKE_scene_check_color_management_enabled(scene);
-	const bool new_shading_nodes = BKE_scene_use_new_shading_nodes(scene);
-	const bool use_matcap = (v3d->flag2 & V3D_SHOW_SOLID_MATCAP) != 0;  /* assumes v3d->defmaterial->preview is set */
-	bool use_opensubdiv = false;
-
-#ifdef WITH_OPENSUBDIV
-	{
-		DerivedMesh *derivedFinal = NULL;
-		if (ob->type == OB_MESH) {
-			Mesh *me = ob->data;
-			BMEditMesh *em = me->edit_btmesh;
-			if (em != NULL) {
-				derivedFinal = em->derivedFinal;
-			}
-			else {
-				derivedFinal = ob->derivedFinal;
-			}
-		}
-		else {
-			derivedFinal = ob->derivedFinal;
-		}
-
-		if (derivedFinal != NULL && derivedFinal->type == DM_TYPE_CCGDM) {
-			CCGDerivedMesh *ccgdm = (CCGDerivedMesh *) derivedFinal;
-			use_opensubdiv = ccgdm->useGpuBackend;
-		}
-	}
-#endif
-
-	/* initialize state */
-	/* DupliObject must be restored */
-	dob = GMS.dob;
-	memset(&GMS, 0, sizeof(GMS));
-	GMS.is_enabled = true;
-	GMS.dob = dob;
-	GMS.lastmatnr = -1;
-	GMS.lastretval = -1;
-	GMS.lastalphablend = GPU_BLEND_SOLID;
-	GMS.use_matcaps = use_matcap;
-
-	GMS.backface_culling = (v3d->flag2 & V3D_BACKFACE_CULLING) != 0;
-
-	GMS.two_sided_lighting = false;
-	if (ob && ob->type == OB_MESH)
-		GMS.two_sided_lighting = (((Mesh *)ob->data)->flag & ME_TWOSIDED) != 0;
-
-	GMS.gob = ob;
-	GMS.gscene = scene;
-	GMS.is_opensubdiv = use_opensubdiv;
-	GMS.totmat = use_matcap ? 1 : ob->totcol + 1;  /* materials start from 1, default material is 0 */
-	GMS.glay = (v3d->localvd) ? v3d->localvd->lay : v3d->lay; /* keep lamps visible in local view */
-	GMS.gviewmat = rv3d->viewmat;
-	GMS.gviewinv = rv3d->viewinv;
-	GMS.gviewcamtexcofac = rv3d->viewcamtexcofac;
-
-	/* alpha pass setup. there's various cases to handle here:
-	 * - object transparency on: only solid materials draw in the first pass,
-	 * and only transparent in the second 'alpha' pass.
-	 * - object transparency off: for glsl we draw both in a single pass, and
-	 * for solid we don't use transparency at all. */
-	GMS.use_alpha_pass = (do_alpha_after != NULL);
-	GMS.is_alpha_pass = (v3d->transp != false);
-	if (GMS.use_alpha_pass)
-		*do_alpha_after = false;
-
-	if (GMS.totmat > FIXEDMAT) {
-		GMS.matbuf = MEM_callocN(sizeof(GPUMaterialFixed) * GMS.totmat, "GMS.matbuf");
-		GMS.gmatbuf = MEM_callocN(sizeof(*GMS.gmatbuf) * GMS.totmat, "GMS.matbuf");
-		GMS.alphablend = MEM_callocN(sizeof(*GMS.alphablend) * GMS.totmat, "GMS.matbuf");
-	}
-	else {
-		GMS.matbuf = GMS.matbuf_fixed;
-		GMS.gmatbuf = GMS.gmatbuf_fixed;
-		GMS.alphablend = GMS.alphablend_fixed;
-	}
-
-	/* viewport material, setup in space_view3d, defaults to matcap using ma->preview now */
-	if (use_matcap) {
-		GMS.gmatbuf[0] = v3d->defmaterial;
-		GPU_material_matcap(scene, v3d->defmaterial, use_opensubdiv);
-
-		/* do material 1 too, for displists! */
-		memcpy(&GMS.matbuf[1], &GMS.matbuf[0], sizeof(GPUMaterialFixed));
-
-		GMS.alphablend[0] = GPU_BLEND_SOLID;
-	}
-	else {
-
-		/* no materials assigned? */
-		if (ob->totcol == 0) {
-			gpu_material_to_fixed(&GMS.matbuf[0], &defmaterial, 0, ob, new_shading_nodes, true);
-
-			/* do material 1 too, for displists! */
-			memcpy(&GMS.matbuf[1], &GMS.matbuf[0], sizeof(GPUMaterialFixed));
-
-			if (glsl) {
-				GMS.gmatbuf[0] = &defmaterial;
-				GPU_material_from_blender(GMS.gscene, &defmaterial, GMS.is_opensubdiv);
-			}
-
-			GMS.alphablend[0] = GPU_BLEND_SOLID;
-		}
-
-		/* setup materials */
-		for (a = 1; a <= ob->totcol; a++) {
-			/* find a suitable material */
-			ma = give_current_material(ob, a);
-			if (!glsl && !new_shading_nodes) ma = gpu_active_node_material(ma);
-			if (ma == NULL) ma = &defmaterial;
-
-			/* create glsl material if requested */
-			gpumat = glsl ? GPU_material_from_blender(GMS.gscene, ma, GMS.is_opensubdiv) : NULL;
-
-			if (gpumat) {
-				/* do glsl only if creating it succeed, else fallback */
-				GMS.gmatbuf[a] = ma;
-				alphablend = GPU_material_alpha_blend(gpumat, ob->col);
-			}
-			else {
-				/* fixed function opengl materials */
-				gpu_material_to_fixed(&GMS.matbuf[a], ma, gamma, ob, new_shading_nodes, false);
-
-				if (GMS.use_alpha_pass && ((ma->mode & MA_TRANSP) || (new_shading_nodes && ma->alpha != 1.0f))) {
-					GMS.matbuf[a].alpha = ma->alpha;
-					alphablend = (ma->alpha == 1.0f) ? GPU_BLEND_SOLID: GPU_BLEND_ALPHA;
-				}
-				else {
-					GMS.matbuf[a].alpha = 1.0f;
-					alphablend = GPU_BLEND_SOLID;
-				}
-			}
-
-			/* setting 'do_alpha_after = true' indicates this object needs to be
-			 * drawn in a second alpha pass for improved blending */
-			if (do_alpha_after && !GMS.is_alpha_pass)
-				if (ELEM(alphablend, GPU_BLEND_ALPHA, GPU_BLEND_ADD, GPU_BLEND_ALPHA_SORT))
-					*do_alpha_after = true;
-
-			GMS.alphablend[a] = alphablend;
-		}
-	}
-
-	/* let's start with a clean state */
-	GPU_object_material_unbind();
-}
-
-static int gpu_get_particle_info(GPUParticleInfo *pi)
-{
-	DupliObject *dob = GMS.dob;
-	if (dob->particle_system) {
-		int ind;
-		if (dob->persistent_id[0] < dob->particle_system->totpart)
-			ind = dob->persistent_id[0];
-		else {
-			ind = dob->particle_system->child[dob->persistent_id[0] - dob->particle_system->totpart].parent;
-		}
-		if (ind >= 0) {
-			ParticleData *p = &dob->particle_system->particles[ind];
-
-			pi->scalprops[0] = ind;
-			pi->scalprops[1] = GMS.gscene->r.cfra - p->time;
-			pi->scalprops[2] = p->lifetime;
-			pi->scalprops[3] = p->size;
-
-			copy_v3_v3(pi->location, p->state.co);
-			pi->location[3] = BLI_hash_int_01(ind);
-
-			copy_v3_v3(pi->velocity, p->state.vel);
-			copy_v3_v3(pi->angular_velocity, p->state.ave);
-			return 1;
-		}
-		else return 0;
-	}
-	else
-		return 0;
-}
-
-static void GPU_get_object_info(float oi[3], Material *mat)
-{
-	Object *ob = GMS.gob;
-	oi[0] = ob->index;
-	oi[1] = mat->index;
-	unsigned int random;
-	if (GMS.dob) {
-		random = GMS.dob->random_id;
-	}
-	else {
-		random = BLI_hash_int_2d(BLI_hash_string(GMS.gob->id.name + 2), 0);
-	}
-	oi[2] = random * (1.0f / (float)0xFFFFFFFF);
-}
-
-int GPU_object_material_bind(int nr, void *attribs)
-{
-	GPUVertexAttribs *gattribs = attribs;
-
-	/* no GPU_begin_object_materials, use default material */
-	if (!GMS.matbuf) {
-		memset(&GMS, 0, sizeof(GMS));
-
-		float diffuse[3], specular[3];
-		mul_v3_v3fl(diffuse, &defmaterial.r, defmaterial.ref + defmaterial.emit);
-		mul_v3_v3fl(specular, &defmaterial.specr, defmaterial.spec);
-		GPU_basic_shader_colors(diffuse, specular, 35, 1.0f);
-
-		if (GMS.two_sided_lighting)
-			GPU_basic_shader_bind(GPU_SHADER_LIGHTING | GPU_SHADER_TWO_SIDED);
-		else
-			GPU_basic_shader_bind(GPU_SHADER_LIGHTING);
-
-		return 0;
-	}
-
-	/* prevent index to use un-initialized array items */
-	if (nr >= GMS.totmat)
-		nr = 0;
-
-	if (gattribs)
-		memset(gattribs, 0, sizeof(*gattribs));
-
-	/* keep current material */
-	if (nr == GMS.lastmatnr)
-		return GMS.lastretval;
-
-	/* unbind glsl material */
-	if (GMS.gboundmat) {
-		if (GMS.is_alpha_pass) glDepthMask(0);
-		GPU_material_unbind(GPU_material_from_blender(GMS.gscene, GMS.gboundmat, GMS.is_opensubdiv));
-		GMS.gboundmat = NULL;
-	}
-
-	/* draw materials with alpha in alpha pass */
-	GMS.lastmatnr = nr;
-	GMS.lastretval = 1;
-
-	if (GMS.use_alpha_pass) {
-		GMS.lastretval = ELEM(GMS.alphablend[nr], GPU_BLEND_SOLID, GPU_BLEND_CLIP);
-		if (GMS.is_alpha_pass)
-			GMS.lastretval = !GMS.lastretval;
-	}
-	else
-		GMS.lastretval = !GMS.is_alpha_pass;
-
-	if (GMS.lastretval) {
-		/* for alpha pass, use alpha blend */
-		GPUBlendMode alphablend = GMS.alphablend[nr];
-
-		if (gattribs && GMS.gmatbuf[nr]) {
-			/* bind glsl material and get attributes */
-			Material *mat = GMS.gmatbuf[nr];
-			GPUParticleInfo partile_info;
-			float object_info[3] = {0};
-
-			float auto_bump_scale;
-
-			GPUMaterial *gpumat = GPU_material_from_blender(GMS.gscene, mat, GMS.is_opensubdiv);
-			GPU_material_vertex_attributes(gpumat, gattribs);
-
-			if (GMS.dob) {
-				gpu_get_particle_info(&partile_info);
-			}
-			
-			if ((GPU_get_material_builtins(gpumat) & GPU_OBJECT_INFO) != 0) {
-				GPU_get_object_info(object_info, mat);
-			}
-
-			GPU_material_bind(
-			        gpumat, GMS.gob->lay, GMS.glay, 1.0, !(GMS.gob->mode & OB_MODE_TEXTURE_PAINT),
-			        GMS.gviewmat, GMS.gviewinv, GMS.gviewcamtexcofac);
-
-			auto_bump_scale = GMS.gob->derivedFinal != NULL ? GMS.gob->derivedFinal->auto_bump_scale : 1.0f;
-			GPU_material_bind_uniforms(gpumat, GMS.gob->obmat, GMS.gviewmat, GMS.gob->col, auto_bump_scale, &partile_info, object_info);
-			GMS.gboundmat = mat;
-
-			if (GMS.is_alpha_pass) glDepthMask(1);
-
-			if (GMS.backface_culling) {
-				glDisable(GL_CULL_FACE);
-			}
-
-			if (GMS.use_matcaps)
-				glColor3f(1.0f, 1.0f, 1.0f);
-		}
-		else {
-			/* or do fixed function opengl material */
-			GPU_basic_shader_colors(
-			        GMS.matbuf[nr].diff,
-			        GMS.matbuf[nr].spec, GMS.matbuf[nr].hard, GMS.matbuf[nr].alpha);
-
-			if (GMS.two_sided_lighting)
-				GPU_basic_shader_bind(GPU_SHADER_LIGHTING | GPU_SHADER_TWO_SIDED);
-			else
-				GPU_basic_shader_bind(GPU_SHADER_LIGHTING);
-		}
-
-		/* set (alpha) blending mode */
-		GPU_set_material_alpha_blend(alphablend);
-	}
-
-	return GMS.lastretval;
-}
-
-int GPU_object_material_visible(int nr, void *attribs)
-{
-	GPUVertexAttribs *gattribs = attribs;
-	int visible;
-
-	if (!GMS.matbuf)
-		return 0;
-
-	if (gattribs)
-		memset(gattribs, 0, sizeof(*gattribs));
-
-	if (nr >= GMS.totmat)
-		nr = 0;
-
-	if (GMS.use_alpha_pass) {
-		visible = ELEM(GMS.alphablend[nr], GPU_BLEND_SOLID, GPU_BLEND_CLIP);
-		if (GMS.is_alpha_pass)
-			visible = !visible;
-	}
-	else
-		visible = !GMS.is_alpha_pass;
-
-	return visible;
-}
-
-void GPU_set_material_alpha_blend(int alphablend)
-{
-	if (GMS.lastalphablend == alphablend)
-		return;
-
-	gpu_set_alpha_blend(alphablend);
-	GMS.lastalphablend = alphablend;
-}
-
-int GPU_get_material_alpha_blend(void)
-{
-	return GMS.lastalphablend;
-}
-
-void GPU_object_material_unbind(void)
-{
-	GMS.lastmatnr = -1;
-	GMS.lastretval = 1;
-
-	if (GMS.gboundmat) {
-		if (GMS.backface_culling)
-			glDisable(GL_CULL_FACE);
-
-		if (GMS.is_alpha_pass) glDepthMask(0);
-		GPU_material_unbind(GPU_material_from_blender(GMS.gscene, GMS.gboundmat, GMS.is_opensubdiv));
-		GMS.gboundmat = NULL;
-	}
-	else
-		GPU_basic_shader_bind(GPU_SHADER_USE_COLOR);
-
-	GPU_set_material_alpha_blend(GPU_BLEND_SOLID);
-}
-
-void GPU_material_diffuse_get(int nr, float diff[4])
-{
-	/* prevent index to use un-initialized array items */
-	if (nr >= GMS.totmat)
-		nr = 0;
-
-	/* no GPU_begin_object_materials, use default material */
-	if (!GMS.matbuf) {
-		mul_v3_v3fl(diff, &defmaterial.r, defmaterial.ref + defmaterial.emit);
-	}
-	else {
-		copy_v3_v3(diff, GMS.matbuf[nr].diff);
-		diff[3] = GMS.matbuf[nr].alpha;
-	}
-}
-
-bool GPU_material_use_matcaps_get(void)
-{
-	return GMS.use_matcaps;
-}
-
-bool GPU_object_materials_check(void)
-{
-	return GMS.is_enabled;
-}
-
-void GPU_end_object_materials(void)
-{
-	GPU_object_material_unbind();
-
-	GMS.is_enabled = false;
-
-	if (GMS.matbuf && GMS.matbuf != GMS.matbuf_fixed) {
-		MEM_freeN(GMS.matbuf);
-		MEM_freeN(GMS.gmatbuf);
-		MEM_freeN(GMS.alphablend);
-	}
-
-	GMS.matbuf = NULL;
-	GMS.gmatbuf = NULL;
-	GMS.alphablend = NULL;
-	GMS.two_sided_lighting = false;
-}
-
-/* Lights */
-
-int GPU_default_lights(void)
-{
-	/* initialize */
-	if (U.light[0].flag == 0 && U.light[1].flag == 0 && U.light[2].flag == 0) {
-		U.light[0].flag = 1;
-		U.light[0].vec[0] = -0.3; U.light[0].vec[1] = 0.3; U.light[0].vec[2] = 0.9;
-		U.light[0].col[0] = 0.8; U.light[0].col[1] = 0.8; U.light[0].col[2] = 0.8;
-		U.light[0].spec[0] = 0.5; U.light[0].spec[1] = 0.5; U.light[0].spec[2] = 0.5;
-		U.light[0].spec[3] = 1.0;
-
-		U.light[1].flag = 0;
-		U.light[1].vec[0] = 0.5; U.light[1].vec[1] = 0.5; U.light[1].vec[2] = 0.1;
-		U.light[1].col[0] = 0.4; U.light[1].col[1] = 0.4; U.light[1].col[2] = 0.8;
-		U.light[1].spec[0] = 0.3; U.light[1].spec[1] = 0.3; U.light[1].spec[2] = 0.5;
-		U.light[1].spec[3] = 1.0;
-
-		U.light[2].flag = 0;
-		U.light[2].vec[0] = 0.3; U.light[2].vec[1] = -0.3; U.light[2].vec[2] = -0.2;
-		U.light[2].col[0] = 0.8; U.light[2].col[1] = 0.5; U.light[2].col[2] = 0.4;
-		U.light[2].spec[0] = 0.5; U.light[2].spec[1] = 0.4; U.light[2].spec[2] = 0.3;
-		U.light[2].spec[3] = 1.0;
-	}
-
-	GPU_basic_shader_light_set_viewer(false);
-
-	int count = 0;
-
-	for (int a = 0; a < 8; a++) {
-		if (a < 3 && U.light[a].flag) {
-			GPULightData light = {0};
-
-			light.type = GPU_LIGHT_SUN;
-
-			normalize_v3_v3(light.direction, U.light[a].vec);
-			copy_v3_v3(light.diffuse, U.light[a].col);
-			copy_v3_v3(light.specular, U.light[a].spec);
-
-			GPU_basic_shader_light_set(a, &light);
-
-			count++;
-		}
-		else
-			GPU_basic_shader_light_set(a, NULL);
-	}
-
-	return count;
-}
-
-int GPU_scene_object_lights(ViewLayer *view_layer, float viewmat[4][4], int ortho)
-{
-	/* disable all lights */
-	for (int count = 0; count < 8; count++)
-		GPU_basic_shader_light_set(count, NULL);
-
-	/* view direction for specular is not computed correct by default in
-	 * opengl, so we set the settings ourselves */
-	GPU_basic_shader_light_set_viewer(!ortho);
-
-	int count = 0;
-
-	for (Base *base = FIRSTBASE(view_layer); base; base = base->next) {
-		if (base->object->type != OB_LAMP)
-			continue;
-
-		Lamp *la = base->object->data;
-
-		/* setup lamp transform */
-		gpuPushMatrix();
-		gpuLoadMatrix(viewmat);
-
-		/* setup light */
-		GPULightData light = {0};
-
-		mul_v3_v3fl(light.diffuse, &la->r, la->energy);
-		mul_v3_v3fl(light.specular, &la->r, la->energy);
-
-		if (la->type == LA_SUN) {
-			/* directional sun light */
-			light.type = GPU_LIGHT_SUN;
-			normalize_v3_v3(light.direction, base->object->obmat[2]);
-		}
-		else {
-			/* other lamps with position attenuation */
-			copy_v3_v3(light.position, base->object->obmat[3]);
-
-			light.constant_attenuation = 1.0f;
-			light.linear_attenuation = la->att1 / la->dist;
-			light.quadratic_attenuation = la->att2 / (la->dist * la->dist);
-
-			if (la->type == LA_SPOT) {
-				light.type = GPU_LIGHT_SPOT;
-				negate_v3_v3(light.direction, base->object->obmat[2]);
-				normalize_v3(light.direction);
-				light.spot_cutoff = RAD2DEGF(la->spotsize * 0.5f);
-				light.spot_exponent = 128.0f * la->spotblend;
-			}
-			else
-				light.type = GPU_LIGHT_POINT;
-		}
-
-		GPU_basic_shader_light_set(count, &light);
-
-		gpuPopMatrix();
-
-		count++;
-		if (count == 8)
-			break;
-	}
-
-	return count;
-}
-
 static void gpu_disable_multisample(void)
 {
 #ifdef __linux__
@@ -1798,8 +1116,6 @@ static void gpu_disable_multisample(void)
 
 void GPU_state_init(void)
 {
-	GPU_default_lights();
-
 	GPU_disable_program_point_size();
 
 	glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
@@ -1830,34 +1146,6 @@ void GPU_disable_program_point_size(void)
 	glDisable(GL_PROGRAM_POINT_SIZE);
 }
 
-#ifdef WITH_OPENSUBDIV
-/* Update face-varying variables offset which might be
- * different from mesh to mesh sharing the same material.
- */
-void GPU_draw_update_fvar_offset(DerivedMesh *dm)
-{
-	/* Sanity check to be sure we only do this for OpenSubdiv draw. */
-	BLI_assert(dm->type == DM_TYPE_CCGDM);
-	BLI_assert(GMS.is_opensubdiv);
-
-	for (int i = 0; i < GMS.totmat; ++i) {
-		Material *material = GMS.gmatbuf[i];
-		GPUMaterial *gpu_material;
-
-		if (material == NULL) {
-			continue;
-		}
-
-		gpu_material = GPU_material_from_blender(GMS.gscene,
-		                                         material,
-		                                         GMS.is_opensubdiv);
-
-		GPU_material_update_fvar_offset(gpu_material, dm);
-	}
-}
-#endif
-
-
 /** \name Framebuffer color depth, for selection codes
  * \{ */