diff options
Diffstat (limited to 'source/blender/render/intern/source/bake.c')
-rw-r--r-- | source/blender/render/intern/source/bake.c | 1343 |
1 files changed, 0 insertions, 1343 deletions
diff --git a/source/blender/render/intern/source/bake.c b/source/blender/render/intern/source/bake.c deleted file mode 100644 index 48f5f494e58..00000000000 --- a/source/blender/render/intern/source/bake.c +++ /dev/null @@ -1,1343 +0,0 @@ -/* - * ***** BEGIN GPL LICENSE BLOCK ***** - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Contributors: 2004/2005/2006 Blender Foundation, full recode - * Contributors: Vertex color baking, Copyright 2011 AutoCRC - * - * ***** END GPL LICENSE BLOCK ***** - */ - -/** \file blender/render/intern/source/bake.c - * \ingroup render - */ - - -/* system includes */ -#include <stdio.h> -#include <string.h> - -/* External modules: */ -#include "MEM_guardedalloc.h" - -#include "BLI_math.h" -#include "BLI_rand.h" -#include "BLI_threads.h" -#include "BLI_utildefines.h" - -#include "DNA_image_types.h" -#include "DNA_material_types.h" -#include "DNA_mesh_types.h" -#include "DNA_meshdata_types.h" - -#include "BKE_customdata.h" -#include "BKE_global.h" -#include "BKE_image.h" -#include "BKE_main.h" -#include "BKE_node.h" -#include "BKE_scene.h" -#include "BKE_library.h" - -#include "IMB_imbuf_types.h" -#include "IMB_imbuf.h" -#include "IMB_colormanagement.h" - -/* local include */ -#include "rayintersection.h" -#include "rayobject.h" -#include "render_types.h" -#include "renderdatabase.h" -#include "shading.h" -#include "zbuf.h" - -#include "PIL_time.h" - -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -/* defined in pipeline.c, is hardcopy of active dynamic allocated Render */ -/* only to be used here in this file, it's for speed */ -extern struct Render R; -/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ - - -/* ************************* bake ************************ */ - - -typedef struct BakeShade { - int thread; - - ShadeSample ssamp; - ObjectInstanceRen *obi; - VlakRen *vlr; - - ZSpan *zspan; - Image *ima; - ImBuf *ibuf; - - int rectx, recty, quad, type, vdone; - bool ready; - - float dir[3]; - Object *actob; - - /* Output: vertex color or image data. If vcol is not NULL, rect and - * rect_float should be NULL. */ - MPoly *mpoly; - MLoop *mloop; - MLoopCol *vcol; - - unsigned int *rect; - float *rect_float; - - /* displacement buffer used for normalization with unknown maximal distance */ - bool use_displacement_buffer; - float *displacement_buffer; - float displacement_min, displacement_max; - - bool use_mask; - char *rect_mask; /* bake pixel mask */ - - float dxco[3], dyco[3]; - - short *do_update; - - struct ColorSpace *rect_colorspace; -} BakeShade; - -static void bake_set_shade_input(ObjectInstanceRen *obi, VlakRen *vlr, ShadeInput *shi, int quad, int UNUSED(isect), int x, int y, float u, float v) -{ - if (quad) - shade_input_set_triangle_i(shi, obi, vlr, 0, 2, 3); - else - shade_input_set_triangle_i(shi, obi, vlr, 0, 1, 2); - - /* cache for shadow */ - shi->samplenr = R.shadowsamplenr[shi->thread]++; - - shi->mask = 0xFFFF; /* all samples */ - - shi->u = -u; - shi->v = -v; - shi->xs = x; - shi->ys = y; - - shade_input_set_uv(shi); - shade_input_set_normals(shi); - - /* no normal flip */ - if (shi->flippednor) - shade_input_flip_normals(shi); - - /* set up view vector to look right at the surface (note that the normal - * is negated in the renderer so it does not need to be done here) */ - shi->view[0] = shi->vn[0]; - shi->view[1] = shi->vn[1]; - shi->view[2] = shi->vn[2]; -} - -static void bake_shade(void *handle, Object *ob, ShadeInput *shi, int UNUSED(quad), int x, int y, float UNUSED(u), float UNUSED(v), float *tvn, float *ttang) -{ - BakeShade *bs = handle; - ShadeSample *ssamp = &bs->ssamp; - ShadeResult shr; - VlakRen *vlr = shi->vlr; - - shade_input_init_material(shi); - - if (bs->type == RE_BAKE_AO) { - ambient_occlusion(shi); - - if (R.r.bake_flag & R_BAKE_NORMALIZE) { - copy_v3_v3(shr.combined, shi->ao); - } - else { - zero_v3(shr.combined); - environment_lighting_apply(shi, &shr); - } - } - else { - if (bs->type == RE_BAKE_SHADOW) /* Why do shadows set the color anyhow?, ignore material color for baking */ - shi->r = shi->g = shi->b = 1.0f; - - shade_input_set_shade_texco(shi); - - /* only do AO for a full bake (and obviously AO bakes) - * AO for light bakes is a leftover and might not be needed */ - if (ELEM(bs->type, RE_BAKE_ALL, RE_BAKE_AO, RE_BAKE_LIGHT)) - shade_samples_do_AO(ssamp); - - if (shi->mat->nodetree && shi->mat->use_nodes) { - ntreeShaderExecTree(shi->mat->nodetree, shi, &shr); - shi->mat = vlr->mat; /* shi->mat is being set in nodetree */ - } - else - shade_material_loop(shi, &shr); - - if (bs->type == RE_BAKE_NORMALS) { - float nor[3]; - - copy_v3_v3(nor, shi->vn); - - if (R.r.bake_normal_space == R_BAKE_SPACE_CAMERA) { - /* pass */ - } - else if (R.r.bake_normal_space == R_BAKE_SPACE_TANGENT) { - float mat[3][3], imat[3][3]; - - /* bitangent */ - if (tvn && ttang) { - copy_v3_v3(mat[0], ttang); - cross_v3_v3v3(mat[1], tvn, ttang); - mul_v3_fl(mat[1], ttang[3]); - copy_v3_v3(mat[2], tvn); - } - else { - copy_v3_v3(mat[0], shi->nmaptang); - cross_v3_v3v3(mat[1], shi->nmapnorm, shi->nmaptang); - mul_v3_fl(mat[1], shi->nmaptang[3]); - copy_v3_v3(mat[2], shi->nmapnorm); - } - - invert_m3_m3(imat, mat); - mul_m3_v3(imat, nor); - } - else if (R.r.bake_normal_space == R_BAKE_SPACE_OBJECT) - mul_mat3_m4_v3(ob->imat_ren, nor); /* ob->imat_ren includes viewinv! */ - else if (R.r.bake_normal_space == R_BAKE_SPACE_WORLD) - mul_mat3_m4_v3(R.viewinv, nor); - - normalize_v3(nor); /* in case object has scaling */ - - /* The invert of the red channel is to make - * the normal map compliant with the outside world. - * It needs to be done because in Blender - * the normal used in the renderer points inward. It is generated - * this way in calc_vertexnormals(). Should this ever change - * this negate must be removed. - * - * there is also a small 1e-5f bias for precision issues. otherwise - * we randomly get 127 or 128 for neutral colors. we choose 128 - * because it is the convention flat color. * */ - shr.combined[0] = (-nor[0]) / 2.0f + 0.5f + 1e-5f; - shr.combined[1] = nor[1] / 2.0f + 0.5f + 1e-5f; - shr.combined[2] = nor[2] / 2.0f + 0.5f + 1e-5f; - } - else if (bs->type == RE_BAKE_TEXTURE) { - copy_v3_v3(shr.combined, &shi->r); - shr.alpha = shi->alpha; - } - else if (bs->type == RE_BAKE_SHADOW) { - copy_v3_v3(shr.combined, shr.shad); - shr.alpha = shi->alpha; - } - else if (bs->type == RE_BAKE_SPEC_COLOR) { - copy_v3_v3(shr.combined, &shi->specr); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_SPEC_INTENSITY) { - copy_v3_fl(shr.combined, shi->spec); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_MIRROR_COLOR) { - copy_v3_v3(shr.combined, &shi->mirr); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_MIRROR_INTENSITY) { - copy_v3_fl(shr.combined, shi->ray_mirror); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_ALPHA) { - copy_v3_fl(shr.combined, shi->alpha); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_EMIT) { - copy_v3_fl(shr.combined, shi->emit); - shr.alpha = 1.0f; - } - else if (bs->type == RE_BAKE_VERTEX_COLORS) { - copy_v3_v3(shr.combined, shi->vcol); - shr.alpha = shi->vcol[3]; - } - } - - if (bs->rect_float && !bs->vcol) { - float *col = bs->rect_float + 4 * (bs->rectx * y + x); - copy_v3_v3(col, shr.combined); - if (bs->type == RE_BAKE_ALL || bs->type == RE_BAKE_TEXTURE || bs->type == RE_BAKE_VERTEX_COLORS) { - col[3] = shr.alpha; - } - else { - col[3] = 1.0; - } - } - else { - /* Target is char (LDR). */ - unsigned char col[4]; - - if (ELEM(bs->type, RE_BAKE_ALL, RE_BAKE_TEXTURE)) { - float rgb[3]; - - copy_v3_v3(rgb, shr.combined); - if (R.scene_color_manage) { - /* Vertex colors have no way to specify color space, so they - * default to sRGB. */ - if (!bs->vcol) - IMB_colormanagement_scene_linear_to_colorspace_v3(rgb, bs->rect_colorspace); - else - linearrgb_to_srgb_v3_v3(rgb, rgb); - } - rgb_float_to_uchar(col, rgb); - } - else { - rgb_float_to_uchar(col, shr.combined); - } - - if (ELEM(bs->type, RE_BAKE_ALL, RE_BAKE_TEXTURE, RE_BAKE_VERTEX_COLORS)) { - col[3] = FTOCHAR(shr.alpha); - } - else { - col[3] = 255; - } - - if (bs->vcol) { - /* Vertex color baking. Vcol has no useful alpha channel (it exists - * but is used only for vertex painting). */ - bs->vcol->r = col[0]; - bs->vcol->g = col[1]; - bs->vcol->b = col[2]; - } - else { - unsigned char *imcol = (unsigned char *)(bs->rect + bs->rectx * y + x); - copy_v4_v4_uchar(imcol, col); - } - - } - - if (bs->rect_mask) { - bs->rect_mask[bs->rectx * y + x] = FILTER_MASK_USED; - } - - if (bs->do_update) { - *bs->do_update = true; - } -} - -static void bake_displacement(void *handle, ShadeInput *UNUSED(shi), float dist, int x, int y) -{ - BakeShade *bs = handle; - float disp; - - if (R.r.bake_flag & R_BAKE_NORMALIZE) { - if (R.r.bake_maxdist) - disp = (dist + R.r.bake_maxdist) / (R.r.bake_maxdist * 2); /* alter the range from [-bake_maxdist, bake_maxdist] to [0, 1]*/ - else - disp = dist; - } - else { - disp = 0.5f + dist; /* alter the range from [-0.5,0.5] to [0,1]*/ - } - - if (bs->displacement_buffer) { - float *displacement = bs->displacement_buffer + (bs->rectx * y + x); - *displacement = disp; - bs->displacement_min = min_ff(bs->displacement_min, disp); - bs->displacement_max = max_ff(bs->displacement_max, disp); - } - - if (bs->rect_float && !bs->vcol) { - float *col = bs->rect_float + 4 * (bs->rectx * y + x); - col[0] = col[1] = col[2] = disp; - col[3] = 1.0f; - } - else { - /* Target is char (LDR). */ - unsigned char col[4]; - col[0] = col[1] = col[2] = FTOCHAR(disp); - col[3] = 255; - - if (bs->vcol) { - /* Vertex color baking. Vcol has no useful alpha channel (it exists - * but is used only for vertex painting). */ - bs->vcol->r = col[0]; - bs->vcol->g = col[1]; - bs->vcol->b = col[2]; - } - else { - unsigned char *imcol = (unsigned char *)(bs->rect + bs->rectx * y + x); - copy_v4_v4_uchar(imcol, col); - } - } - if (bs->rect_mask) { - bs->rect_mask[bs->rectx * y + x] = FILTER_MASK_USED; - } -} - -static int bake_intersect_tree(RayObject *raytree, Isect *isect, float *start, float *dir, float sign, float *hitco, float *dist) -{ - float maxdist; - int hit; - - /* might be useful to make a user setting for maxsize*/ - if (R.r.bake_maxdist > 0.0f) - maxdist = R.r.bake_maxdist; - else - maxdist = RE_RAYTRACE_MAXDIST + R.r.bake_biasdist; - - /* 'dir' is always normalized */ - madd_v3_v3v3fl(isect->start, start, dir, -R.r.bake_biasdist); - - mul_v3_v3fl(isect->dir, dir, sign); - - isect->dist = maxdist; - - hit = RE_rayobject_raycast(raytree, isect); - if (hit) { - madd_v3_v3v3fl(hitco, isect->start, isect->dir, isect->dist); - - *dist = isect->dist; - } - - return hit; -} - -static void bake_set_vlr_dxyco(BakeShade *bs, float *uv1, float *uv2, float *uv3) -{ - VlakRen *vlr = bs->vlr; - float A, d1, d2, d3, *v1, *v2, *v3; - - if (bs->quad) { - v1 = vlr->v1->co; - v2 = vlr->v3->co; - v3 = vlr->v4->co; - } - else { - v1 = vlr->v1->co; - v2 = vlr->v2->co; - v3 = vlr->v3->co; - } - - /* formula derived from barycentric coordinates: - * (uvArea1*v1 + uvArea2*v2 + uvArea3*v3)/uvArea - * then taking u and v partial derivatives to get dxco and dyco */ - A = (uv2[0] - uv1[0]) * (uv3[1] - uv1[1]) - (uv3[0] - uv1[0]) * (uv2[1] - uv1[1]); - - if (fabsf(A) > FLT_EPSILON) { - A = 0.5f / A; - - d1 = uv2[1] - uv3[1]; - d2 = uv3[1] - uv1[1]; - d3 = uv1[1] - uv2[1]; - bs->dxco[0] = (v1[0] * d1 + v2[0] * d2 + v3[0] * d3) * A; - bs->dxco[1] = (v1[1] * d1 + v2[1] * d2 + v3[1] * d3) * A; - bs->dxco[2] = (v1[2] * d1 + v2[2] * d2 + v3[2] * d3) * A; - - d1 = uv3[0] - uv2[0]; - d2 = uv1[0] - uv3[0]; - d3 = uv2[0] - uv1[0]; - bs->dyco[0] = (v1[0] * d1 + v2[0] * d2 + v3[0] * d3) * A; - bs->dyco[1] = (v1[1] * d1 + v2[1] * d2 + v3[1] * d3) * A; - bs->dyco[2] = (v1[2] * d1 + v2[2] * d2 + v3[2] * d3) * A; - } - else { - bs->dxco[0] = bs->dxco[1] = bs->dxco[2] = 0.0f; - bs->dyco[0] = bs->dyco[1] = bs->dyco[2] = 0.0f; - } - - if (bs->obi->flag & R_TRANSFORMED) { - mul_m3_v3(bs->obi->nmat, bs->dxco); - mul_m3_v3(bs->obi->nmat, bs->dyco); - } -} - -static void do_bake_shade(void *handle, int x, int y, float u, float v) -{ - BakeShade *bs = handle; - VlakRen *vlr = bs->vlr; - ObjectInstanceRen *obi = bs->obi; - Object *ob = obi->obr->ob; - float l, *v1, *v2, *v3, tvn[3], ttang[4]; - int quad; - ShadeSample *ssamp = &bs->ssamp; - ShadeInput *shi = ssamp->shi; - - /* fast threadsafe break test */ - if (R.test_break(R.tbh)) - return; - - /* setup render coordinates */ - if (bs->quad) { - v1 = vlr->v1->co; - v2 = vlr->v3->co; - v3 = vlr->v4->co; - } - else { - v1 = vlr->v1->co; - v2 = vlr->v2->co; - v3 = vlr->v3->co; - } - - l = 1.0f - u - v; - - /* shrink barycentric coordinates inwards slightly to avoid some issues - * where baking selected to active might just miss the other face at the - * near the edge of a face */ - if (bs->actob) { - const float eps = 1.0f - 1e-4f; - float invsum; - - u = (u - 0.5f) * eps + 0.5f; - v = (v - 0.5f) * eps + 0.5f; - l = (l - 0.5f) * eps + 0.5f; - - invsum = 1.0f / (u + v + l); - - u *= invsum; - v *= invsum; - l *= invsum; - } - - /* renderco */ - shi->co[0] = l * v3[0] + u * v1[0] + v * v2[0]; - shi->co[1] = l * v3[1] + u * v1[1] + v * v2[1]; - shi->co[2] = l * v3[2] + u * v1[2] + v * v2[2]; - - /* avoid self shadow with vertex bake from adjacent faces [#33729] */ - if ((bs->vcol != NULL) && (bs->actob == NULL)) { - madd_v3_v3fl(shi->co, vlr->n, 0.0001f); - } - - if (obi->flag & R_TRANSFORMED) - mul_m4_v3(obi->mat, shi->co); - - copy_v3_v3(shi->dxco, bs->dxco); - copy_v3_v3(shi->dyco, bs->dyco); - - quad = bs->quad; - bake_set_shade_input(obi, vlr, shi, quad, 0, x, y, u, v); - - if (bs->type == RE_BAKE_NORMALS && R.r.bake_normal_space == R_BAKE_SPACE_TANGENT) { - shade_input_set_shade_texco(shi); - copy_v3_v3(tvn, shi->nmapnorm); - copy_v4_v4(ttang, shi->nmaptang); - } - - /* if we are doing selected to active baking, find point on other face */ - if (bs->actob) { - Isect isec, minisec; - float co[3], minco[3], dist, mindist = 0.0f; - int hit, sign, dir = 1; - - /* intersect with ray going forward and backward*/ - hit = 0; - memset(&minisec, 0, sizeof(minisec)); - minco[0] = minco[1] = minco[2] = 0.0f; - - copy_v3_v3(bs->dir, shi->vn); - - for (sign = -1; sign <= 1; sign += 2) { - memset(&isec, 0, sizeof(isec)); - isec.mode = RE_RAY_MIRROR; - - isec.orig.ob = obi; - isec.orig.face = vlr; - isec.userdata = bs->actob; - isec.check = RE_CHECK_VLR_BAKE; - isec.skip = RE_SKIP_VLR_NEIGHBOUR; - - if (bake_intersect_tree(R.raytree, &isec, shi->co, shi->vn, sign, co, &dist)) { - if (!hit || len_squared_v3v3(shi->co, co) < len_squared_v3v3(shi->co, minco)) { - minisec = isec; - mindist = dist; - copy_v3_v3(minco, co); - hit = 1; - dir = sign; - } - } - } - - if (ELEM(bs->type, RE_BAKE_DISPLACEMENT, RE_BAKE_DERIVATIVE)) { - if (hit) - bake_displacement(handle, shi, (dir == -1) ? mindist : -mindist, x, y); - else - bake_displacement(handle, shi, 0.0f, x, y); - return; - } - - /* if hit, we shade from the new point, otherwise from point one starting face */ - if (hit) { - obi = (ObjectInstanceRen *)minisec.hit.ob; - vlr = (VlakRen *)minisec.hit.face; - quad = (minisec.isect == 2); - copy_v3_v3(shi->co, minco); - - u = -minisec.u; - v = -minisec.v; - bake_set_shade_input(obi, vlr, shi, quad, 1, x, y, u, v); - } - } - - if (bs->type == RE_BAKE_NORMALS && R.r.bake_normal_space == R_BAKE_SPACE_TANGENT) - bake_shade(handle, ob, shi, quad, x, y, u, v, tvn, ttang); - else - bake_shade(handle, ob, shi, quad, x, y, u, v, NULL, NULL); -} - -static int get_next_bake_face(BakeShade *bs) -{ - ObjectRen *obr; - VlakRen *vlr; - MTFace *tface; - static int v = 0, vdone = false; - static ObjectInstanceRen *obi = NULL; - - if (bs == NULL) { - vlr = NULL; - v = vdone = false; - obi = R.instancetable.first; - return 0; - } - - BLI_thread_lock(LOCK_CUSTOM1); - - for (; obi; obi = obi->next, v = 0) { - obr = obi->obr; - - /* only allow non instances here */ - if (obr->flag & R_INSTANCEABLE) - continue; - - for (; v < obr->totvlak; v++) { - vlr = RE_findOrAddVlak(obr, v); - - if ((bs->actob && bs->actob == obr->ob) || (!bs->actob && (obr->ob->flag & SELECT))) { - if (R.r.bake_flag & R_BAKE_VCOL) { - /* Gather face data for vertex color bake */ - Mesh *me; - int *origindex, vcollayer; - CustomDataLayer *cdl; - - if (obr->ob->type != OB_MESH) - continue; - me = obr->ob->data; - - origindex = RE_vlakren_get_origindex(obr, vlr, 0); - if (origindex == NULL) - continue; - if (*origindex >= me->totpoly) { - /* Small hack for Array modifier, which gives false - * original indices - z0r */ - continue; - } -#if 0 - /* Only shade selected faces. */ - if ((me->mface[*origindex].flag & ME_FACE_SEL) == 0) - continue; -#endif - - vcollayer = CustomData_get_render_layer_index(&me->ldata, CD_MLOOPCOL); - if (vcollayer == -1) - continue; - - cdl = &me->ldata.layers[vcollayer]; - bs->mpoly = me->mpoly + *origindex; - bs->vcol = ((MLoopCol *)cdl->data) + bs->mpoly->loopstart; - bs->mloop = me->mloop + bs->mpoly->loopstart; - - /* Tag mesh for reevaluation. */ - me->id.tag |= LIB_TAG_DOIT; - } - else { - Image *ima = NULL; - ImBuf *ibuf = NULL; - const float vec_alpha[4] = {0.0f, 0.0f, 0.0f, 0.0f}; - const float vec_solid[4] = {0.0f, 0.0f, 0.0f, 1.0f}; - const float nor_alpha[4] = {0.5f, 0.5f, 1.0f, 0.0f}; - const float nor_solid[4] = {0.5f, 0.5f, 1.0f, 1.0f}; - const float disp_alpha[4] = {0.5f, 0.5f, 0.5f, 0.0f}; - const float disp_solid[4] = {0.5f, 0.5f, 0.5f, 1.0f}; - - tface = RE_vlakren_get_tface(obr, vlr, obr->bakemtface, NULL, 0); - /* should use 'BKE_object_material_edit_image_get' but in this case simpler not to */ - ima = vlr->mat ? vlr->mat->edit_image : NULL; - - if (!tface || !ima) - continue; - - ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL); - - if (ibuf == NULL) - continue; - - if (ibuf->rect == NULL && ibuf->rect_float == NULL) { - BKE_image_release_ibuf(ima, ibuf, NULL); - continue; - } - - if (ibuf->rect_float && !(ibuf->channels == 0 || ibuf->channels == 4)) { - BKE_image_release_ibuf(ima, ibuf, NULL); - continue; - } - - if (ima->flag & IMA_USED_FOR_RENDER) { - ima->id.tag &= ~LIB_TAG_DOIT; - BKE_image_release_ibuf(ima, ibuf, NULL); - continue; - } - - /* find the image for the first time? */ - if (ima->id.tag & LIB_TAG_DOIT) { - ima->id.tag &= ~LIB_TAG_DOIT; - - /* we either fill in float or char, this ensures things go fine */ - if (ibuf->rect_float) - imb_freerectImBuf(ibuf); - /* clear image */ - if (R.r.bake_flag & R_BAKE_CLEAR) { - if (R.r.bake_mode == RE_BAKE_NORMALS && R.r.bake_normal_space == R_BAKE_SPACE_TANGENT) - IMB_rectfill(ibuf, (ibuf->planes == R_IMF_PLANES_RGBA) ? nor_alpha : nor_solid); - else if (ELEM(R.r.bake_mode, RE_BAKE_DISPLACEMENT, RE_BAKE_DERIVATIVE)) - IMB_rectfill(ibuf, (ibuf->planes == R_IMF_PLANES_RGBA) ? disp_alpha : disp_solid); - else - IMB_rectfill(ibuf, (ibuf->planes == R_IMF_PLANES_RGBA) ? vec_alpha : vec_solid); - } - /* might be read by UI to set active image for display */ - R.bakebuf = ima; - } - - /* Tag image for redraw. */ - ibuf->userflags |= IB_DISPLAY_BUFFER_INVALID; - BKE_image_release_ibuf(ima, ibuf, NULL); - } - - bs->obi = obi; - bs->vlr = vlr; - bs->vdone++; /* only for error message if nothing was rendered */ - v++; - BLI_thread_unlock(LOCK_CUSTOM1); - return 1; - } - } - } - - BLI_thread_unlock(LOCK_CUSTOM1); - return 0; -} - -static void bake_single_vertex(BakeShade *bs, VertRen *vert, float u, float v) -{ - int *origindex, i; - MLoopCol *basevcol; - MLoop *mloop; - - /* per vertex fixed seed */ - BLI_thread_srandom(bs->thread, vert->index); - - origindex = RE_vertren_get_origindex(bs->obi->obr, vert, 0); - if (!origindex || *origindex == ORIGINDEX_NONE) - return; - - /* Search for matching vertex index and apply shading. */ - for (i = 0; i < bs->mpoly->totloop; i++) { - mloop = bs->mloop + i; - if (mloop->v != *origindex) - continue; - basevcol = bs->vcol; - bs->vcol = basevcol + i; - do_bake_shade(bs, 0, 0, u, v); - bs->vcol = basevcol; - break; - } -} - -/* Bake all vertices of a face. Actually, this still works on a face-by-face - * basis, and each vertex on each face is shaded. Vertex colors are a property - * of loops, not vertices. */ -static void shade_verts(BakeShade *bs) -{ - VlakRen *vlr = bs->vlr; - - /* Disable baking to image; write to vcol instead. vcol pointer is set in - * bake_single_vertex. */ - bs->ima = NULL; - bs->rect = NULL; - bs->rect_float = NULL; - bs->displacement_buffer = NULL; - bs->displacement_min = FLT_MAX; - bs->displacement_max = -FLT_MAX; - - bs->quad = 0; - - /* No anti-aliasing for vertices. */ - zero_v3(bs->dxco); - zero_v3(bs->dyco); - - /* Shade each vertex of the face. u and v are barycentric coordinates; since - * we're only interested in vertices, these will be 0 or 1. */ - if ((vlr->flag & R_FACE_SPLIT) == 0) { - /* Processing triangle face, whole quad, or first half of split quad. */ - - bake_single_vertex(bs, bs->vlr->v1, 1.0f, 0.0f); - bake_single_vertex(bs, bs->vlr->v2, 0.0f, 1.0f); - bake_single_vertex(bs, bs->vlr->v3, 0.0f, 0.0f); - - if (vlr->v4) { - bs->quad = 1; - bake_single_vertex(bs, bs->vlr->v4, 0.0f, 0.0f); - } - } - else { - /* Processing second half of split quad. Only one vertex to go. */ - if (vlr->flag & R_DIVIDE_24) { - bake_single_vertex(bs, bs->vlr->v2, 0.0f, 1.0f); - } - else { - bake_single_vertex(bs, bs->vlr->v3, 0.0f, 0.0f); - } - } -} - -/* already have tested for tface and ima and zspan */ -static void shade_tface(BakeShade *bs) -{ - VlakRen *vlr = bs->vlr; - ObjectInstanceRen *obi = bs->obi; - ObjectRen *obr = obi->obr; - MTFace *tface = RE_vlakren_get_tface(obr, vlr, obr->bakemtface, NULL, 0); - Image *ima = vlr->mat->edit_image; - float vec[4][2]; - int a, i1, i2, i3; - - /* per face fixed seed */ - BLI_thread_srandom(bs->thread, vlr->index); - - /* check valid zspan */ - if (ima != bs->ima) { - BKE_image_release_ibuf(bs->ima, bs->ibuf, NULL); - - bs->ima = ima; - bs->ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL); - /* note, these calls only free/fill contents of zspan struct, not zspan itself */ - zbuf_free_span(bs->zspan); - zbuf_alloc_span(bs->zspan, bs->ibuf->x, bs->ibuf->y, R.clipcrop); - } - - bs->rectx = bs->ibuf->x; - bs->recty = bs->ibuf->y; - bs->rect = bs->ibuf->rect; - bs->rect_colorspace = bs->ibuf->rect_colorspace; - bs->rect_float = bs->ibuf->rect_float; - bs->vcol = NULL; - bs->quad = 0; - bs->rect_mask = NULL; - bs->displacement_buffer = NULL; - - if (bs->use_mask || bs->use_displacement_buffer) { - BakeImBufuserData *userdata = bs->ibuf->userdata; - if (userdata == NULL) { - BLI_thread_lock(LOCK_CUSTOM1); - userdata = bs->ibuf->userdata; - if (userdata == NULL) /* since the thread was locked, its possible another thread alloced the value */ - userdata = MEM_callocN(sizeof(BakeImBufuserData), "BakeImBufuserData"); - - if (bs->use_mask) { - if (userdata->mask_buffer == NULL) { - userdata->mask_buffer = MEM_callocN(sizeof(char) * bs->rectx * bs->recty, "BakeMask"); - } - } - - if (bs->use_displacement_buffer) { - if (userdata->displacement_buffer == NULL) { - userdata->displacement_buffer = MEM_callocN(sizeof(float) * bs->rectx * bs->recty, "BakeDisp"); - } - } - - bs->ibuf->userdata = userdata; - - BLI_thread_unlock(LOCK_CUSTOM1); - } - - bs->rect_mask = userdata->mask_buffer; - bs->displacement_buffer = userdata->displacement_buffer; - } - - /* get pixel level vertex coordinates */ - for (a = 0; a < 4; a++) { - /* Note, workaround for pixel aligned UVs which are common and can screw up our intersection tests - * where a pixel gets in between 2 faces or the middle of a quad, - * camera aligned quads also have this problem but they are less common. - * Add a small offset to the UVs, fixes bug #18685 - Campbell */ - vec[a][0] = tface->uv[a][0] * (float)bs->rectx - (0.5f + 0.001f); - vec[a][1] = tface->uv[a][1] * (float)bs->recty - (0.5f + 0.002f); - } - - /* UV indices have to be corrected for possible quad->tria splits */ - i1 = 0; i2 = 1; i3 = 2; - vlr_set_uv_indices(vlr, &i1, &i2, &i3); - bake_set_vlr_dxyco(bs, vec[i1], vec[i2], vec[i3]); - zspan_scanconvert(bs->zspan, bs, vec[i1], vec[i2], vec[i3], do_bake_shade); - - if (vlr->v4) { - bs->quad = 1; - bake_set_vlr_dxyco(bs, vec[0], vec[2], vec[3]); - zspan_scanconvert(bs->zspan, bs, vec[0], vec[2], vec[3], do_bake_shade); - } -} - -static void *do_bake_thread(void *bs_v) -{ - BakeShade *bs = bs_v; - - while (get_next_bake_face(bs)) { - if (R.r.bake_flag & R_BAKE_VCOL) { - shade_verts(bs); - } - else { - shade_tface(bs); - } - - /* fast threadsafe break test */ - if (R.test_break(R.tbh)) - break; - - /* access is not threadsafe but since its just true/false probably ok - * only used for interactive baking */ - if (bs->do_update) { - *bs->do_update = true; - } - } - bs->ready = true; - - BKE_image_release_ibuf(bs->ima, bs->ibuf, NULL); - - return NULL; -} - -void RE_bake_ibuf_filter(ImBuf *ibuf, char *mask, const int filter) -{ - /* must check before filtering */ - const bool is_new_alpha = (ibuf->planes != R_IMF_PLANES_RGBA) && BKE_imbuf_alpha_test(ibuf); - - /* Margin */ - if (filter) { - IMB_filter_extend(ibuf, mask, filter); - } - - /* if the bake results in new alpha then change the image setting */ - if (is_new_alpha) { - ibuf->planes = R_IMF_PLANES_RGBA; - } - else { - if (filter && ibuf->planes != R_IMF_PLANES_RGBA) { - /* clear alpha added by filtering */ - IMB_rectfill_alpha(ibuf, 1.0f); - } - } -} - -void RE_bake_ibuf_normalize_displacement(ImBuf *ibuf, float *displacement, char *mask, float displacement_min, float displacement_max) -{ - int i; - const float *current_displacement = displacement; - const char *current_mask = mask; - float max_distance; - - max_distance = max_ff(fabsf(displacement_min), fabsf(displacement_max)); - - for (i = 0; i < ibuf->x * ibuf->y; i++) { - if (*current_mask == FILTER_MASK_USED) { - float normalized_displacement; - - if (max_distance > 1e-5f) - normalized_displacement = (*current_displacement + max_distance) / (max_distance * 2); - else - normalized_displacement = 0.5f; - - if (ibuf->rect_float) { - /* currently baking happens to RGBA only */ - float *fp = ibuf->rect_float + i * 4; - fp[0] = fp[1] = fp[2] = normalized_displacement; - fp[3] = 1.0f; - } - - if (ibuf->rect) { - unsigned char *cp = (unsigned char *) (ibuf->rect + i); - cp[0] = cp[1] = cp[2] = FTOCHAR(normalized_displacement); - cp[3] = 255; - } - } - - current_displacement++; - current_mask++; - } -} - -/* using object selection tags, the faces with UV maps get baked */ -/* render should have been setup */ -/* returns 0 if nothing was handled */ -int RE_bake_shade_all_selected(Render *re, int type, Object *actob, short *do_update, float *progress) -{ - BakeShade *handles; - ListBase threads; - Image *ima; - int a, vdone = false, result = BAKE_RESULT_OK; - bool use_mask = false; - bool use_displacement_buffer = false; - bool do_manage = false; - - if (ELEM(type, RE_BAKE_ALL, RE_BAKE_TEXTURE)) { - do_manage = BKE_scene_check_color_management_enabled(re->scene); - } - - re->scene_color_manage = BKE_scene_check_color_management_enabled(re->scene); - - /* initialize render global */ - R = *re; - R.bakebuf = NULL; - - /* initialize static vars */ - get_next_bake_face(NULL); - - /* do we need a mask? */ - if (re->r.bake_filter) - use_mask = true; - - /* do we need buffer to store displacements */ - if (ELEM(type, RE_BAKE_DISPLACEMENT, RE_BAKE_DERIVATIVE)) { - if (((R.r.bake_flag & R_BAKE_NORMALIZE) && R.r.bake_maxdist == 0.0f) || - (type == RE_BAKE_DERIVATIVE)) - { - use_displacement_buffer = true; - use_mask = true; - } - } - - /* baker uses this flag to detect if image was initialized */ - if ((R.r.bake_flag & R_BAKE_VCOL) == 0) { - for (ima = G.main->image.first; ima; ima = ima->id.next) { - ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL); - ima->id.tag |= LIB_TAG_DOIT; - ima->flag &= ~IMA_USED_FOR_RENDER; - if (ibuf) { - ibuf->userdata = NULL; /* use for masking if needed */ - } - BKE_image_release_ibuf(ima, ibuf, NULL); - } - } - - if (R.r.bake_flag & R_BAKE_VCOL) { - /* untag all meshes */ - BKE_main_id_tag_listbase(&G.main->mesh, LIB_TAG_DOIT, false); - } - - BLI_threadpool_init(&threads, do_bake_thread, re->r.threads); - - handles = MEM_callocN(sizeof(BakeShade) * re->r.threads, "BakeShade"); - - /* get the threads running */ - for (a = 0; a < re->r.threads; a++) { - handles[a].thread = a; - - /* set defaults in handles */ - handles[a].ssamp.shi[0].lay = re->lay; - - if (type == RE_BAKE_SHADOW) { - handles[a].ssamp.shi[0].passflag = SCE_PASS_SHADOW; - } - else { - handles[a].ssamp.shi[0].passflag = SCE_PASS_COMBINED; - } - handles[a].ssamp.shi[0].combinedflag = ~(SCE_PASS_SPEC); - handles[a].ssamp.shi[0].thread = a; - handles[a].ssamp.shi[0].do_manage = do_manage; - handles[a].ssamp.tot = 1; - - handles[a].type = type; - handles[a].actob = actob; - if (R.r.bake_flag & R_BAKE_VCOL) - handles[a].zspan = NULL; - else - handles[a].zspan = MEM_callocN(sizeof(ZSpan), "zspan for bake"); - - handles[a].use_mask = use_mask; - handles[a].use_displacement_buffer = use_displacement_buffer; - - handles[a].do_update = do_update; /* use to tell the view to update */ - - handles[a].displacement_min = FLT_MAX; - handles[a].displacement_max = -FLT_MAX; - - BLI_threadpool_insert(&threads, &handles[a]); - } - - /* wait for everything to be done */ - a = 0; - while (a != re->r.threads) { - PIL_sleep_ms(50); - - /* calculate progress */ - for (vdone = false, a = 0; a < re->r.threads; a++) - vdone += handles[a].vdone; - if (progress) - *progress = (float)(vdone / (float)re->totvlak); - - for (a = 0; a < re->r.threads; a++) { - if (handles[a].ready == false) { - break; - } - } - } - - /* filter and refresh images */ - if ((R.r.bake_flag & R_BAKE_VCOL) == 0) { - float displacement_min = FLT_MAX, displacement_max = -FLT_MAX; - - if (use_displacement_buffer) { - for (a = 0; a < re->r.threads; a++) { - displacement_min = min_ff(displacement_min, handles[a].displacement_min); - displacement_max = max_ff(displacement_max, handles[a].displacement_max); - } - } - - for (ima = G.main->image.first; ima; ima = ima->id.next) { - if ((ima->id.tag & LIB_TAG_DOIT) == 0) { - ImBuf *ibuf = BKE_image_acquire_ibuf(ima, NULL, NULL); - BakeImBufuserData *userdata; - - if (ima->flag & IMA_USED_FOR_RENDER) - result = BAKE_RESULT_FEEDBACK_LOOP; - - if (!ibuf) - continue; - - userdata = (BakeImBufuserData *)ibuf->userdata; - if (userdata) { - if (use_displacement_buffer) { - if (type == RE_BAKE_DERIVATIVE) { - float user_scale = (R.r.bake_flag & R_BAKE_USERSCALE) ? R.r.bake_user_scale : -1.0f; - RE_bake_make_derivative(ibuf, userdata->displacement_buffer, userdata->mask_buffer, - displacement_min, displacement_max, user_scale); - } - else { - RE_bake_ibuf_normalize_displacement(ibuf, userdata->displacement_buffer, userdata->mask_buffer, - displacement_min, displacement_max); - } - } - - RE_bake_ibuf_filter(ibuf, userdata->mask_buffer, re->r.bake_filter); - } - - ibuf->userflags |= IB_BITMAPDIRTY; - BKE_image_release_ibuf(ima, ibuf, NULL); - } - } - - /* calculate return value */ - for (a = 0; a < re->r.threads; a++) { - zbuf_free_span(handles[a].zspan); - MEM_freeN(handles[a].zspan); - } - } - - MEM_freeN(handles); - - BLI_threadpool_end(&threads); - - if (vdone == 0) { - result = BAKE_RESULT_NO_OBJECTS; - } - - return result; -} - -struct Image *RE_bake_shade_get_image(void) -{ - return R.bakebuf; -} - -/* **************** Derivative Maps Baker **************** */ - -static void add_single_heights_margin(const ImBuf *ibuf, const char *mask, float *heights_buffer) -{ - int x, y; - - for (y = 0; y < ibuf->y; y++) { - for (x = 0; x < ibuf->x; x++) { - int index = ibuf->x * y + x; - - /* If unassigned pixel, look for neighbors. */ - if (mask[index] != FILTER_MASK_USED) { - float height_acc = 0; - int denom = 0; - int i, j; - - for (j = -1; j <= 1; j++) - for (i = -1; i <= 1; i++) { - int w = (i == 0 ? 1 : 0) + (j == 0 ? 1 : 0) + 1; - - if (i != 0 || j != 0) { - int index2 = 0; - int x0 = x + i; - int y0 = y + j; - - CLAMP(x0, 0, ibuf->x - 1); - CLAMP(y0, 0, ibuf->y - 1); - - index2 = ibuf->x * y0 + x0; - - if (mask[index2] == FILTER_MASK_USED) { - height_acc += w * heights_buffer[index2]; - denom += w; - } - } - } - - /* Insert final value. */ - if (denom > 0) { - heights_buffer[index] = height_acc / denom; - } - } - } - } -} - -/* returns user-scale */ -float RE_bake_make_derivative(ImBuf *ibuf, float *heights_buffer, const char *mask, - const float height_min, const float height_max, - const float fmult) -{ - const float delta_height = height_max - height_min; - const float denom = delta_height > 0.0f ? (8 * delta_height) : 1.0f; - bool auto_range_fit = fmult <= 0.0f; - float max_num_deriv = -1.0f; - int x, y, index; - - /* Need a single margin to calculate good derivatives. */ - add_single_heights_margin(ibuf, mask, heights_buffer); - - if (auto_range_fit) { - /* If automatic range fitting is enabled. */ - for (y = 0; y < ibuf->y; y++) { - const int Yu = y == (ibuf->y - 1) ? (ibuf->y - 1) : (y + 1); - const int Yc = y; - const int Yd = y == 0 ? 0 : (y - 1); - - for (x = 0; x < ibuf->x; x++) { - const int Xl = x == 0 ? 0 : (x - 1); - const int Xc = x; - const int Xr = x == (ibuf->x - 1) ? (ibuf->x - 1) : (x + 1); - - const float Hcy = heights_buffer[Yc * ibuf->x + Xr] - heights_buffer[Yc * ibuf->x + Xl]; - const float Hu = heights_buffer[Yu * ibuf->x + Xr] - heights_buffer[Yu * ibuf->x + Xl]; - const float Hd = heights_buffer[Yd * ibuf->x + Xr] - heights_buffer[Yd * ibuf->x + Xl]; - - const float Hl = heights_buffer[Yu * ibuf->x + Xl] - heights_buffer[Yd * ibuf->x + Xl]; - const float Hcx = heights_buffer[Yu * ibuf->x + Xc] - heights_buffer[Yd * ibuf->x + Xc]; - const float Hr = heights_buffer[Yu * ibuf->x + Xr] - heights_buffer[Yd * ibuf->x + Xr]; - - /* This corresponds to using the sobel kernel on the heights buffer - * to obtain the derivative multiplied by 8. - */ - const float deriv_x = Hu + 2 * Hcy + Hd; - const float deriv_y = Hr + 2 * Hcx + Hl; - - /* early out */ - index = ibuf->x * y + x; - if (mask[index] != FILTER_MASK_USED) { - continue; - } - - /* Widen bound. */ - if (fabsf(deriv_x) > max_num_deriv) { - max_num_deriv = fabsf(deriv_x); - } - - if (fabsf(deriv_y) > max_num_deriv) { - max_num_deriv = fabsf(deriv_y); - } - } - } - } - - /* Output derivatives. */ - auto_range_fit &= (max_num_deriv > 0); - for (y = 0; y < ibuf->y; y++) { - const int Yu = y == (ibuf->y - 1) ? (ibuf->y - 1) : (y + 1); - const int Yc = y; - const int Yd = y == 0 ? 0 : (y - 1); - - for (x = 0; x < ibuf->x; x++) { - const int Xl = x == 0 ? 0 : (x - 1); - const int Xc = x; - const int Xr = x == (ibuf->x - 1) ? (ibuf->x - 1) : (x + 1); - - const float Hcy = heights_buffer[Yc * ibuf->x + Xr] - heights_buffer[Yc * ibuf->x + Xl]; - const float Hu = heights_buffer[Yu * ibuf->x + Xr] - heights_buffer[Yu * ibuf->x + Xl]; - const float Hd = heights_buffer[Yd * ibuf->x + Xr] - heights_buffer[Yd * ibuf->x + Xl]; - - const float Hl = heights_buffer[Yu * ibuf->x + Xl] - heights_buffer[Yd * ibuf->x + Xl]; - const float Hcx = heights_buffer[Yu * ibuf->x + Xc] - heights_buffer[Yd * ibuf->x + Xc]; - const float Hr = heights_buffer[Yu * ibuf->x + Xr] - heights_buffer[Yd * ibuf->x + Xr]; - - /* This corresponds to using the sobel kernel on the heights buffer - * to obtain the derivative multiplied by 8. - */ - float deriv_x = Hu + 2 * Hcy + Hd; - float deriv_y = Hr + 2 * Hcx + Hl; - - /* Early out. */ - index = ibuf->x * y + x; - if (mask[index] != FILTER_MASK_USED) { - continue; - } - - if (auto_range_fit) { - deriv_x /= max_num_deriv; - deriv_y /= max_num_deriv; - } - else { - deriv_x *= (fmult / denom); - deriv_y *= (fmult / denom); - } - - deriv_x = deriv_x * 0.5f + 0.5f; - deriv_y = deriv_y * 0.5f + 0.5f; - - /* Clamp. */ - CLAMP(deriv_x, 0.0f, 1.0f); - CLAMP(deriv_y, 0.0f, 1.0f); - - /* Write out derivatives. */ - if (ibuf->rect_float) { - float *rrgbf = ibuf->rect_float + index * 4; - - rrgbf[0] = deriv_x; - rrgbf[1] = deriv_y; - rrgbf[2] = 0.0f; - rrgbf[3] = 1.0f; - } - else { - char *rrgb = (char *)ibuf->rect + index * 4; - - rrgb[0] = FTOCHAR(deriv_x); - rrgb[1] = FTOCHAR(deriv_y); - rrgb[2] = 0; - rrgb[3] = 255; - } - } - } - - /* Eeturn user-scale (for rendering). */ - return auto_range_fit ? (max_num_deriv / denom) : (fmult > 0.0f ? (1.0f / fmult) : 0.0f); -} |