void paint_get_tex_pixel_col(MTex *mtex, float u, float v, float rgba[4], struct ImagePool *pool, int thread, bool convert_to_linear, struct ColorSpace *colorspace)
{
float co[3] = {u, v, 0.0f};
int hasrgb;
float intensity;
hasrgb = externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool);
if (!hasrgb) {
rgba[0] = intensity;
rgba[1] = intensity;
rgba[2] = intensity;
rgba[3] = 1.0f;
}
if (convert_to_linear)
IMB_colormanagement_colorspace_to_scene_linear_v3(rgba, colorspace);
linearrgb_to_srgb_v3_v3(rgba, rgba);
CLAMP(rgba[0], 0.0f, 1.0f);
CLAMP(rgba[1], 0.0f, 1.0f);
CLAMP(rgba[2], 0.0f, 1.0f);
CLAMP(rgba[3], 0.0f, 1.0f);
}
/* Brush Sampling */
void brush_sample_tex(Brush *brush, float *xy, float *rgba, const int thread)
{
MTex *mtex= &brush->mtex;
if (mtex && mtex->tex) {
float co[3], tin, tr, tg, tb, ta;
int hasrgb;
const int radius= brush_size(brush);
co[0]= xy[0]/radius;
co[1]= xy[1]/radius;
co[2]= 0.0f;
hasrgb= externtex(mtex, co, &tin, &tr, &tg, &tb, &ta, thread);
if (hasrgb) {
rgba[0]= tr;
rgba[1]= tg;
rgba[2]= tb;
rgba[3]= ta;
}
else {
rgba[0]= tin;
rgba[1]= tin;
rgba[2]= tin;
rgba[3]= 1.0f;
}
}
else if (rgba)
rgba[0]= rgba[1]= rgba[2]= rgba[3]= 1.0f;
}
/* Brush Sampling */
void BKE_brush_sample_tex(const Scene *scene, Brush *brush, const float xy[2], float rgba[4], const int thread)
{
MTex *mtex = &brush->mtex;
if (mtex && mtex->tex) {
float co[3], tin, tr, tg, tb, ta;
int hasrgb;
const int radius = BKE_brush_size_get(scene, brush);
co[0] = xy[0] / radius;
co[1] = xy[1] / radius;
co[2] = 0.0f;
hasrgb = externtex(mtex, co, &tin, &tr, &tg, &tb, &ta, thread);
if (hasrgb) {
rgba[0] = tr;
rgba[1] = tg;
rgba[2] = tb;
rgba[3] = ta;
}
else {
rgba[0] = tin;
rgba[1] = tin;
rgba[2] = tin;
rgba[3] = 1.0f;
}
}
else {
rgba[0] = rgba[1] = rgba[2] = rgba[3] = 1.0f;
}
}
/* TODO: should probably be unified with BrushPainter stuff? */
unsigned int *BKE_brush_gen_texture_cache(Brush *br, int half_side, bool use_secondary)
{
unsigned int *texcache = NULL;
MTex *mtex = (use_secondary) ? &br->mask_mtex : &br->mtex;
float intensity;
float rgba[4];
int ix, iy;
int side = half_side * 2;
if (mtex->tex) {
float x, y, step = 2.0 / side, co[3];
texcache = MEM_callocN(sizeof(int) * side * side, "Brush texture cache");
/* do normalized canonical view coords for texture */
for (y = -1.0, iy = 0; iy < side; iy++, y += step) {
for (x = -1.0, ix = 0; ix < side; ix++, x += step) {
co[0] = x;
co[1] = y;
co[2] = 0.0f;
/* This is copied from displace modifier code */
/* TODO(sergey): brush are always caching with CM enabled for now. */
externtex(mtex, co, &intensity, rgba, rgba + 1, rgba + 2, rgba + 3, 0, NULL, false, false);
((char *)texcache)[(iy * side + ix) * 4] = ((char *)texcache)[(iy * side + ix) * 4 + 1] =
((char *)texcache)[(iy * side + ix) * 4 + 2] = ((
char *)texcache)[(iy * side + ix) * 4 + 3] = (char)(intensity * 255.0f);
}
}
}
return texcache;
}
float paint_get_tex_pixel(MTex *mtex, float u, float v, struct ImagePool *pool, int thread)
{
float intensity, rgba[4];
float co[3] = {u, v, 0.0f};
externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool);
return intensity;
}
void paint_get_tex_pixel_col(MTex *mtex, float u, float v, float rgba[4], struct ImagePool *pool)
{
float co[3] = {u, v, 0.0f};
int hasrgb;
float intensity;
hasrgb = externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, 0, pool);
if (!hasrgb) {
rgba[0] = intensity;
rgba[1] = intensity;
rgba[2] = intensity;
rgba[3] = 1.0f;
}
CLAMP(rgba[0], 0.0f, 1.0f);
CLAMP(rgba[1], 0.0f, 1.0f);
CLAMP(rgba[2], 0.0f, 1.0f);
CLAMP(rgba[3], 0.0f, 1.0f);
}
float BKE_brush_sample_masktex(const Scene *scene, Brush *br,
const float point[2],
const int thread,
struct ImagePool *pool)
{
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
MTex *mtex = &br->mask_mtex;
float rgba[4], intensity;
if (!mtex->tex) {
return 1.0f;
}
if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) {
float rotation = -mtex->rot;
float point_2d[2] = {point[0], point[1]};
float x, y;
float co[3];
x = point_2d[0] - br->mask_stencil_pos[0];
y = point_2d[1] - br->mask_stencil_pos[1];
if (rotation > 0.001f || rotation < -0.001f) {
const float angle = atan2f(y, x) + rotation;
const float flen = sqrtf(x * x + y * y);
x = flen * cosf(angle);
y = flen * sinf(angle);
}
if (fabsf(x) > br->mask_stencil_dimension[0] || fabsf(y) > br->mask_stencil_dimension[1]) {
zero_v4(rgba);
return 0.0f;
}
x /= (br->mask_stencil_dimension[0]);
y /= (br->mask_stencil_dimension[1]);
co[0] = x;
co[1] = y;
co[2] = 0.0f;
externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
}
else {
float rotation = -mtex->rot;
float point_2d[2] = {point[0], point[1]};
float x = 0.0f, y = 0.0f; /* Quite warnings */
float invradius = 1.0f; /* Quite warnings */
float co[3];
if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) {
/* keep coordinates relative to mouse */
rotation += ups->brush_rotation_sec;
x = point_2d[0] - ups->mask_tex_mouse[0];
y = point_2d[1] - ups->mask_tex_mouse[1];
/* use pressure adjusted size for fixed mode */
invradius = 1.0f / ups->pixel_radius;
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_TILED) {
/* leave the coordinates relative to the screen */
/* use unadjusted size for tiled mode */
invradius = 1.0f / BKE_brush_size_get(scene, br);
x = point_2d[0];
y = point_2d[1];
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_RANDOM) {
rotation += ups->brush_rotation_sec;
/* these contain a random coordinate */
x = point_2d[0] - ups->mask_tex_mouse[0];
y = point_2d[1] - ups->mask_tex_mouse[1];
invradius = 1.0f / ups->pixel_radius;
}
x *= invradius;
y *= invradius;
/* it is probably worth optimizing for those cases where
* the texture is not rotated by skipping the calls to
* atan2, sqrtf, sin, and cos. */
if (rotation > 0.001f || rotation < -0.001f) {
const float angle = atan2f(y, x) + rotation;
const float flen = sqrtf(x * x + y * y);
x = flen * cosf(angle);
y = flen * sinf(angle);
}
co[0] = x;
co[1] = y;
co[2] = 0.0f;
externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
}
CLAMP(intensity, 0.0f, 1.0f);
switch (br->mask_pressure) {
case BRUSH_MASK_PRESSURE_CUTOFF:
intensity = ((1.0f - intensity) < ups->size_pressure_value) ? 1.0f : 0.0f;
break;
case BRUSH_MASK_PRESSURE_RAMP:
intensity = ups->size_pressure_value + intensity * (1.0f - ups->size_pressure_value);
break;
default:
break;
}
return intensity;
}
/* Generic texture sampler for 3D painting systems. point has to be either in
* region space mouse coordinates, or 3d world coordinates for 3D mapping.
*
* rgba outputs straight alpha. */
float BKE_brush_sample_tex_3D(const Scene *scene, Brush *br,
const float point[3],
float rgba[4], const int thread,
struct ImagePool *pool)
{
UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings;
MTex *mtex = &br->mtex;
float intensity = 1.0;
bool hasrgb = false;
if (!mtex->tex) {
intensity = 1;
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_3D) {
/* Get strength by feeding the vertex
* location directly into a texture */
hasrgb = externtex(mtex, point, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_STENCIL) {
float rotation = -mtex->rot;
float point_2d[2] = {point[0], point[1]};
float x, y;
float co[3];
x = point_2d[0] - br->stencil_pos[0];
y = point_2d[1] - br->stencil_pos[1];
if (rotation > 0.001f || rotation < -0.001f) {
const float angle = atan2f(y, x) + rotation;
const float flen = sqrtf(x * x + y * y);
x = flen * cosf(angle);
y = flen * sinf(angle);
}
if (fabsf(x) > br->stencil_dimension[0] || fabsf(y) > br->stencil_dimension[1]) {
zero_v4(rgba);
return 0.0f;
}
x /= (br->stencil_dimension[0]);
y /= (br->stencil_dimension[1]);
co[0] = x;
co[1] = y;
co[2] = 0.0f;
hasrgb = externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
}
else {
float rotation = -mtex->rot;
float point_2d[2] = {point[0], point[1]};
float x = 0.0f, y = 0.0f; /* Quite warnings */
float invradius = 1.0f; /* Quite warnings */
float co[3];
if (mtex->brush_map_mode == MTEX_MAP_MODE_VIEW) {
/* keep coordinates relative to mouse */
rotation += ups->brush_rotation;
x = point_2d[0] - ups->tex_mouse[0];
y = point_2d[1] - ups->tex_mouse[1];
/* use pressure adjusted size for fixed mode */
invradius = 1.0f / ups->pixel_radius;
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_TILED) {
/* leave the coordinates relative to the screen */
/* use unadjusted size for tiled mode */
invradius = 1.0f / BKE_brush_size_get(scene, br);
x = point_2d[0];
y = point_2d[1];
}
else if (mtex->brush_map_mode == MTEX_MAP_MODE_RANDOM) {
rotation += ups->brush_rotation;
/* these contain a random coordinate */
x = point_2d[0] - ups->tex_mouse[0];
y = point_2d[1] - ups->tex_mouse[1];
invradius = 1.0f / ups->pixel_radius;
}
x *= invradius;
y *= invradius;
/* it is probably worth optimizing for those cases where
* the texture is not rotated by skipping the calls to
* atan2, sqrtf, sin, and cos. */
if (rotation > 0.001f || rotation < -0.001f) {
const float angle = atan2f(y, x) + rotation;
const float flen = sqrtf(x * x + y * y);
x = flen * cosf(angle);
y = flen * sinf(angle);
}
co[0] = x;
co[1] = y;
co[2] = 0.0f;
hasrgb = externtex(mtex, co, &intensity,
rgba, rgba + 1, rgba + 2, rgba + 3, thread, pool, false, false);
}
intensity += br->texture_sample_bias;
if (!hasrgb) {
rgba[0] = intensity;
rgba[1] = intensity;
rgba[2] = intensity;
rgba[3] = 1.0f;
}
/* For consistency, sampling always returns color in linear space */
else if (ups->do_linear_conversion) {
IMB_colormanagement_colorspace_to_scene_linear_v3(rgba, ups->colorspace);
}
return intensity;
}
HaloRen *RE_inithalo(Render *re, ObjectRen *obr, Material *ma,
const float vec[3], const float vec1[3],
const float *orco, float hasize, float vectsize, int seed)
{
const bool skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
HaloRen *har;
MTex *mtex;
float tin, tr, tg, tb, ta;
float xn, yn, zn, texvec[3], hoco[4], hoco1[4];
if (hasize==0.0f) return NULL;
projectverto(vec, re->winmat, hoco);
if (hoco[3]==0.0f) return NULL;
if (vec1) {
projectverto(vec1, re->winmat, hoco1);
if (hoco1[3]==0.0f) return NULL;
}
har= RE_findOrAddHalo(obr, obr->tothalo++);
copy_v3_v3(har->co, vec);
har->hasize= hasize;
/* actual projectvert is done in function project_renderdata() because of parts/border/pano */
/* we do it here for sorting of halos */
zn= hoco[3];
har->xs= 0.5f*re->winx*(hoco[0]/zn);
har->ys= 0.5f*re->winy*(hoco[1]/zn);
har->zs= 0x7FFFFF*(hoco[2]/zn);
har->zBufDist = 0x7FFFFFFF*(hoco[2]/zn);
/* halovect */
if (vec1) {
har->type |= HA_VECT;
xn= har->xs - 0.5f*re->winx*(hoco1[0]/hoco1[3]);
yn= har->ys - 0.5f*re->winy*(hoco1[1]/hoco1[3]);
if (xn==0.0f || (xn==0.0f && yn==0.0f)) zn= 0.0f;
else zn = atan2f(yn, xn);
har->sin = sinf(zn);
har->cos = cosf(zn);
zn= len_v3v3(vec1, vec);
har->hasize= vectsize*zn + (1.0f-vectsize)*hasize;
sub_v3_v3v3(har->no, vec, vec1);
normalize_v3(har->no);
}
if (ma->mode & MA_HALO_XALPHA) har->type |= HA_XALPHA;
har->alfa= ma->alpha;
har->r= ma->r;
har->g= ma->g;
har->b= ma->b;
har->add= (255.0f*ma->add);
har->mat= ma;
har->hard= ma->har;
har->seed= seed % 256;
if (ma->mode & MA_STAR) har->starpoints= ma->starc;
if (ma->mode & MA_HALO_LINES) har->linec= ma->linec;
if (ma->mode & MA_HALO_RINGS) har->ringc= ma->ringc;
if (ma->mode & MA_HALO_FLARE) har->flarec= ma->flarec;
if (ma->mtex[0]) {
if (ma->mode & MA_HALOTEX) {
har->tex = 1;
}
else if (har->mat->septex & (1 << 0)) {
/* only 1 level textures */
}
else {
mtex= ma->mtex[0];
copy_v3_v3(texvec, vec);
if (mtex->texco & TEXCO_NORM) {
;
}
else if (mtex->texco & TEXCO_OBJECT) {
/* texvec[0]+= imatbase->ivec[0]; */
/* texvec[1]+= imatbase->ivec[1]; */
/* texvec[2]+= imatbase->ivec[2]; */
/* mul_m3_v3(imatbase->imat, texvec); */
}
else {
if (orco) {
copy_v3_v3(texvec, orco);
}
}
externtex(mtex, texvec, &tin, &tr, &tg, &tb, &ta, 0, re->pool, skip_load_image);
yn= tin*mtex->colfac;
//zn= tin*mtex->alphafac;
if (mtex->mapto & MAP_COL) {
zn= 1.0f-yn;
har->r= (yn*tr+ zn*ma->r);
har->g= (yn*tg+ zn*ma->g);
har->b= (yn*tb+ zn*ma->b);
}
if (mtex->texco & TEXCO_UV) {
har->alfa= tin;
}
if (mtex->mapto & MAP_ALPHA)
har->alfa= tin;
}
}
har->pool = re->pool;
har->skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
return har;
}
HaloRen *RE_inithalo_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Material *ma,
const float vec[3], const float vec1[3],
const float *orco, const float *uvco, float hasize, float vectsize, int seed, const float pa_co[3])
{
const bool skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
HaloRen *har;
MTex *mtex;
float tin, tr, tg, tb, ta;
float xn, yn, zn, texvec[3], hoco[4], hoco1[4], in[3], tex[3], out[3];
int i, hasrgb;
if (hasize==0.0f) return NULL;
projectverto(vec, re->winmat, hoco);
if (hoco[3]==0.0f) return NULL;
if (vec1) {
projectverto(vec1, re->winmat, hoco1);
if (hoco1[3]==0.0f) return NULL;
}
har= RE_findOrAddHalo(obr, obr->tothalo++);
copy_v3_v3(har->co, vec);
har->hasize= hasize;
/* actual projectvert is done in function project_renderdata() because of parts/border/pano */
/* we do it here for sorting of halos */
zn= hoco[3];
har->xs= 0.5f*re->winx*(hoco[0]/zn);
har->ys= 0.5f*re->winy*(hoco[1]/zn);
har->zs= 0x7FFFFF*(hoco[2]/zn);
har->zBufDist = 0x7FFFFFFF*(hoco[2]/zn);
/* halovect */
if (vec1) {
har->type |= HA_VECT;
xn= har->xs - 0.5f*re->winx*(hoco1[0]/hoco1[3]);
yn= har->ys - 0.5f*re->winy*(hoco1[1]/hoco1[3]);
if (xn==0.0f || (xn==0.0f && yn==0.0f)) zn= 0.0;
else zn = atan2f(yn, xn);
har->sin = sinf(zn);
har->cos = cosf(zn);
zn= len_v3v3(vec1, vec)*0.5f;
har->hasize= vectsize*zn + (1.0f-vectsize)*hasize;
sub_v3_v3v3(har->no, vec, vec1);
normalize_v3(har->no);
}
if (ma->mode & MA_HALO_XALPHA) har->type |= HA_XALPHA;
har->alfa= ma->alpha;
har->r= ma->r;
har->g= ma->g;
har->b= ma->b;
har->add= (255.0f*ma->add);
har->mat= ma;
har->hard= ma->har;
har->seed= seed % 256;
if (ma->mode & MA_STAR) har->starpoints= ma->starc;
if (ma->mode & MA_HALO_LINES) har->linec= ma->linec;
if (ma->mode & MA_HALO_RINGS) har->ringc= ma->ringc;
if (ma->mode & MA_HALO_FLARE) har->flarec= ma->flarec;
if ((ma->mode & MA_HALOTEX) && ma->mtex[0])
har->tex= 1;
for (i=0; i<MAX_MTEX; i++)
if (ma->mtex[i] && (ma->septex & (1<<i))==0) {
mtex= ma->mtex[i];
copy_v3_v3(texvec, vec);
if (mtex->texco & TEXCO_NORM) {
;
}
else if (mtex->texco & TEXCO_OBJECT) {
if (mtex->object)
mul_m4_v3(mtex->object->imat_ren, texvec);
}
else if (mtex->texco & TEXCO_GLOB) {
copy_v3_v3(texvec, vec);
}
else if (mtex->texco & TEXCO_UV && uvco) {
int uv_index=CustomData_get_named_layer_index(&dm->faceData, CD_MTFACE, mtex->uvname);
if (uv_index<0)
uv_index=CustomData_get_active_layer_index(&dm->faceData, CD_MTFACE);
uv_index-=CustomData_get_layer_index(&dm->faceData, CD_MTFACE);
texvec[0]=2.0f*uvco[2*uv_index]-1.0f;
texvec[1]=2.0f*uvco[2*uv_index+1]-1.0f;
texvec[2]=0.0f;
}
else if (mtex->texco & TEXCO_PARTICLE) {
/* particle coordinates in range [0, 1] */
texvec[0] = 2.f * pa_co[0] - 1.f;
texvec[1] = 2.f * pa_co[1] - 1.f;
texvec[2] = pa_co[2];
}
else if (orco) {
copy_v3_v3(texvec, orco);
}
hasrgb = externtex(mtex, texvec, &tin, &tr, &tg, &tb, &ta, 0, re->pool, skip_load_image);
//yn= tin*mtex->colfac;
//zn= tin*mtex->alphafac;
if (mtex->mapto & MAP_COL) {
tex[0]=tr;
tex[1]=tg;
tex[2]=tb;
out[0]=har->r;
out[1]=har->g;
out[2]=har->b;
texture_rgb_blend(in, tex, out, tin, mtex->colfac, mtex->blendtype);
// zn= 1.0-yn;
//har->r= (yn*tr+ zn*ma->r);
//har->g= (yn*tg+ zn*ma->g);
//har->b= (yn*tb+ zn*ma->b);
har->r= in[0];
har->g= in[1];
har->b= in[2];
}
/* alpha returned, so let's use it instead of intensity */
if (hasrgb)
tin = ta;
if (mtex->mapto & MAP_ALPHA)
har->alfa = texture_value_blend(mtex->def_var, har->alfa, tin, mtex->alphafac, mtex->blendtype);
if (mtex->mapto & MAP_HAR)
har->hard = 1.0f+126.0f*texture_value_blend(mtex->def_var, ((float)har->hard)/127.0f, tin, mtex->hardfac, mtex->blendtype);
if (mtex->mapto & MAP_RAYMIRR)
har->hasize = 100.0f*texture_value_blend(mtex->def_var, har->hasize/100.0f, tin, mtex->raymirrfac, mtex->blendtype);
if (mtex->mapto & MAP_TRANSLU) {
float add = texture_value_blend(mtex->def_var, (float)har->add/255.0f, tin, mtex->translfac, mtex->blendtype);
CLAMP(add, 0.f, 1.f);
har->add = 255.0f*add;
}
/* now what on earth is this good for?? */
//if (mtex->texco & 16) {
// har->alfa= tin;
//}
}
har->pool = re->pool;
har->skip_load_image = (re->r.scemode & R_NO_IMAGE_LOAD) != 0;
return har;
}