diff options
author | Brecht Van Lommel <brecht@blender.org> | 2021-02-12 17:22:21 +0300 |
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committer | Brecht Van Lommel <brecht@blender.org> | 2021-02-12 17:22:21 +0300 |
commit | dad32cbd17790cbd6d8fd30758a69315274fbb24 (patch) | |
tree | df77bfd23bae33ae06f06135df1affbb2588ebcc /source/blender/editors/object/object_bake_api.c | |
parent | 7db00556fa9a14f8617c2ec1e35ae834689f0da7 (diff) | |
parent | 9febda912b04559277d465b9610334c04a73d2ce (diff) |
Merge branch 'blender-v2.92-release'
Diffstat (limited to 'source/blender/editors/object/object_bake_api.c')
-rw-r--r-- | source/blender/editors/object/object_bake_api.c | 90 |
1 files changed, 59 insertions, 31 deletions
diff --git a/source/blender/editors/object/object_bake_api.c b/source/blender/editors/object/object_bake_api.c index b1ba856ff0f..9ec0c625f71 100644 --- a/source/blender/editors/object/object_bake_api.c +++ b/source/blender/editors/object/object_bake_api.c @@ -44,6 +44,7 @@ #include "BKE_main.h" #include "BKE_material.h" #include "BKE_mesh.h" +#include "BKE_mesh_mapping.h" #include "BKE_modifier.h" #include "BKE_node.h" #include "BKE_object.h" @@ -946,7 +947,7 @@ static bool bake_targets_init_vertex_colors(BakeTargets *targets, Object *ob, Re targets->num_materials = ob->totcol; BakeImage *bk_image = &targets->images[0]; - bk_image->width = me->totvert; + bk_image->width = me->totloop; bk_image->height = 1; bk_image->offset = 0; bk_image->image = NULL; @@ -968,6 +969,7 @@ static void bake_targets_populate_pixels_vertex_colors(BakeTargets *targets, pixel->primitive_id = -1; pixel->object_id = 0; + pixel->seed = 0; pixel->du_dx = 0.0f; pixel->du_dy = 0.0f; pixel->dv_dx = 0.0f; @@ -986,8 +988,8 @@ static void bake_targets_populate_pixels_vertex_colors(BakeTargets *targets, const MLoopTri *lt = &looptri[i]; for (int j = 0; j < 3; j++) { - const unsigned int v = me->mloop[lt->tri[j]].v; - BakePixel *pixel = &pixel_array[v]; + const unsigned int l = lt->tri[j]; + BakePixel *pixel = &pixel_array[l]; if (pixel->primitive_id != -1) { continue; @@ -995,6 +997,11 @@ static void bake_targets_populate_pixels_vertex_colors(BakeTargets *targets, pixel->primitive_id = i; + /* Seed is the vertex, so that sampling noise is coherent for the same + * vertex, but different corners can still have different normals, + * materials and UVs. */ + pixel->seed = me->mloop[l].v; + /* Barycentric coordinates, nudged a bit to avoid precision issues that * may happen when exactly at the vertex coordinate. */ if (j == 0) { @@ -1015,24 +1022,24 @@ static void bake_targets_populate_pixels_vertex_colors(BakeTargets *targets, MEM_freeN(looptri); } -static void bake_result_to_rgba(float rgba[4], const float *result, const int num_channels) +static void bake_result_add_to_rgba(float rgba[4], const float *result, const int num_channels) { if (num_channels == 4) { - copy_v4_v4(rgba, result); + add_v4_v4(rgba, result); } else if (num_channels == 3) { - copy_v3_v3(rgba, result); - rgba[3] = 1.0f; + add_v3_v3(rgba, result); + rgba[3] += 1.0f; } else { - rgba[0] = result[0]; - rgba[1] = result[0]; - rgba[2] = result[0]; - rgba[3] = 1.0f; + rgba[0] += result[0]; + rgba[1] += result[0]; + rgba[2] += result[0]; + rgba[3] += 1.0f; } } -static bool bake_targets_output_vertex_colors(BakeTargets *targets, Object *ob) +static bool bake_targets_output_vertex_colors(BakeTargets *targets, Object *ob, Mesh *me_split) { Mesh *me = ob->data; MPropCol *mcol = CustomData_get_layer(&me->vdata, CD_PROP_COLOR); @@ -1040,26 +1047,45 @@ static bool bake_targets_output_vertex_colors(BakeTargets *targets, Object *ob) const int num_channels = targets->num_channels; const float *result = targets->result; + /* We bake using a mesh with additional vertices for split normals, but the + * number of loops must match to be able to transfer the vertex colors. */ + BLI_assert(me->totloop == me_split->totloop); + UNUSED_VARS_NDEBUG(me_split); + if (mcol) { - /* Float vertex colors in scene linear color space. */ const int totvert = me->totvert; - for (int i = 0; i < totvert; i++, mcol++) { - bake_result_to_rgba(mcol->color, &result[i * num_channels], num_channels); + const int totloop = me->totloop; + + /* Accumulate float vertex colors in scene linear color space. */ + int *num_loops_for_vertex = MEM_callocN(sizeof(int) * me->totvert, "num_loops_for_vertex"); + memset(mcol, 0, sizeof(MPropCol) * me->totvert); + + MLoop *mloop = me->mloop; + for (int i = 0; i < totloop; i++, mloop++) { + const int v = mloop->v; + bake_result_add_to_rgba(mcol[v].color, &result[i * num_channels], num_channels); + num_loops_for_vertex[v]++; } + + /* Normalize for number of loops. */ + for (int i = 0; i < totvert; i++) { + if (num_loops_for_vertex[i] > 0) { + mul_v4_fl(mcol[i].color, 1.0f / num_loops_for_vertex[i]); + } + } + + MEM_SAFE_FREE(num_loops_for_vertex); } else { - /* Byte loop colors in sRGB colors space. - * - * Note that colors have been baked per vertex and not per corner, which - * could be useful to preserve material discontinuities. However this also - * leads to unintended discontinuities due to sampling noise. */ + /* Byte loop colors in sRGB colors space. */ MLoop *mloop = me->mloop; const int totloop = me->totloop; const bool is_noncolor = targets->is_noncolor; for (int i = 0; i < totloop; i++, mloop++, mloopcol++) { float rgba[4]; - bake_result_to_rgba(rgba, &result[mloop->v * num_channels], num_channels); + zero_v4(rgba); + bake_result_add_to_rgba(rgba, &result[i * num_channels], num_channels); if (is_noncolor) { unit_float_to_uchar_clamp_v4(&mloopcol->r, rgba); @@ -1142,7 +1168,7 @@ static bool bake_targets_output(const BakeAPIRender *bkr, } } else if (bkr->target == R_BAKE_TARGET_VERTEX_COLORS) { - return bake_targets_output_vertex_colors(targets, ob); + return bake_targets_output_vertex_colors(targets, ob, me); } return false; @@ -1212,10 +1238,6 @@ static int bake(const BakeAPIRender *bkr, } } - if (!bake_targets_init(bkr, &targets, ob_low, reports)) { - goto cleanup; - } - if (bkr->is_selected_to_active) { CollectionPointerLink *link; tot_highpoly = 0; @@ -1245,9 +1267,6 @@ static int bake(const BakeAPIRender *bkr, } } - pixel_array_low = MEM_mallocN(sizeof(BakePixel) * targets.num_pixels, "bake pixels low poly"); - pixel_array_high = MEM_mallocN(sizeof(BakePixel) * targets.num_pixels, "bake pixels high poly"); - /* for multires bake, use linear UV subdivision to match low res UVs */ if (bkr->pass_type == SCE_PASS_NORMAL && bkr->normal_space == R_BAKE_SPACE_TANGENT && !bkr->is_selected_to_active) { @@ -1265,11 +1284,17 @@ static int bake(const BakeAPIRender *bkr, /* get the mesh as it arrives in the renderer */ me_low = bake_mesh_new_from_object(ob_low_eval); - /* populate the pixel array with the face data */ + /* Initialize bake targets. */ + if (!bake_targets_init(bkr, &targets, ob_low_eval, reports)) { + goto cleanup; + } + + /* Populate the pixel array with the face data. Except if we use a cage, then + * it is populated later with the cage mesh (smoothed version of the mesh). */ + pixel_array_low = MEM_mallocN(sizeof(BakePixel) * targets.num_pixels, "bake pixels low poly"); if ((bkr->is_selected_to_active && (ob_cage == NULL) && bkr->is_cage) == false) { bake_targets_populate_pixels(bkr, &targets, me_low, pixel_array_low); } - /* else populate the pixel array with the 'cage' mesh (the smooth version of the mesh) */ if (bkr->is_selected_to_active) { CollectionPointerLink *link; @@ -1358,6 +1383,9 @@ static int bake(const BakeAPIRender *bkr, ob_low_eval->base_flag &= ~(BASE_VISIBLE_DEPSGRAPH | BASE_ENABLED_RENDER); /* populate the pixel arrays with the corresponding face data for each high poly object */ + pixel_array_high = MEM_mallocN(sizeof(BakePixel) * targets.num_pixels, + "bake pixels high poly"); + if (!RE_bake_pixels_populate_from_objects(me_low, pixel_array_low, pixel_array_high, |