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blender-archive/source/blender/render/intern/source/render_texture.c

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/*
* ***** 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* Contributor(s): 2004-2006, Blender Foundation, full recode
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/render/intern/source/render_texture.c
* \ingroup render
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "BLI_blenlib.h"
#include "BLI_math.h"
#include "BLI_noise.h"
#include "BLI_rand.h"
#include "BLI_utildefines.h"
#include "DNA_anim_types.h"
#include "DNA_texture_types.h"
#include "DNA_object_types.h"
#include "DNA_lamp_types.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_material_types.h"
#include "DNA_image_types.h"
#include "DNA_node_types.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_colormanagement.h"
#include "BKE_colortools.h"
#include "BKE_image.h"
#include "BKE_node.h"
#include "BKE_animsys.h"
#include "BKE_DerivedMesh.h"
#include "BKE_global.h"
#include "BKE_main.h"
#include "BKE_material.h"
#include "BKE_scene.h"
#include "BKE_library.h"
#include "BKE_image.h"
#include "BKE_texture.h"
#include "BKE_key.h"
#include "BKE_ipo.h"
#include "MEM_guardedalloc.h"
#include "envmap.h"
#include "pointdensity.h"
#include "voxeldata.h"
#include "renderpipeline.h"
#include "render_types.h"
#include "rendercore.h"
#include "shading.h"
#include "texture.h"
#include "texture_ocean.h"
#include "renderdatabase.h" /* needed for UV */
#include "RE_render_ext.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;
/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
static void init_render_texture(Render *re, Tex *tex)
{
/* imap test */
if (tex->ima && ELEM(tex->ima->source, IMA_SRC_MOVIE, IMA_SRC_SEQUENCE)) {
BKE_image_user_frame_calc(&tex->iuser, re ? re->r.cfra : 0, re ? re->flag & R_SEC_FIELD:0);
}
else if (tex->type==TEX_ENVMAP) {
/* just in case */
tex->imaflag |= TEX_INTERPOL | TEX_MIPMAP;
tex->extend= TEX_CLIP;
if (tex->env) {
if (tex->env->type==ENV_PLANE)
tex->extend= TEX_EXTEND;
/* only free envmap when rendermode was set to render envmaps, for previewrender */
if (G.is_rendering && re) {
if (re->r.mode & R_ENVMAP)
if (tex->env->stype==ENV_ANIM)
BKE_free_envmapdata(tex->env);
}
}
}
if (tex->nodetree && tex->use_nodes) {
ntreeTexBeginExecTree(tex->nodetree); /* has internal flag to detect it only does it once */
}
}
/* ------------------------------------------------------------------------- */
void init_render_textures(Render *re)
{
Tex *tex;
tex= re->main->tex.first;
while (tex) {
if (tex->id.us) init_render_texture(re, tex);
tex= tex->id.next;
}
}
static void end_render_texture(Tex *tex)
{
if (tex && tex->use_nodes && tex->nodetree && tex->nodetree->execdata)
ntreeTexEndExecTree(tex->nodetree->execdata);
}
void end_render_textures(Render *re)
{
Tex *tex;
for (tex= re->main->tex.first; tex; tex= tex->id.next)
if (tex->id.us)
end_render_texture(tex);
}
/* ------------------------------------------------------------------------- */
/* this allows colorbanded textures to control normals as well */
static void tex_normal_derivate(Tex *tex, TexResult *texres)
{
if (tex->flag & TEX_COLORBAND) {
float col[4];
if (do_colorband(tex->coba, texres->tin, col)) {
float fac0, fac1, fac2, fac3;
fac0= (col[0]+col[1]+col[2]);
do_colorband(tex->coba, texres->nor[0], col);
fac1= (col[0]+col[1]+col[2]);
do_colorband(tex->coba, texres->nor[1], col);
fac2= (col[0]+col[1]+col[2]);
do_colorband(tex->coba, texres->nor[2], col);
fac3= (col[0]+col[1]+col[2]);
texres->nor[0]= (fac0 - fac1) / 3.0f;
texres->nor[1]= (fac0 - fac2) / 3.0f;
texres->nor[2]= (fac0 - fac3) / 3.0f;
return;
}
}
texres->nor[0]= texres->tin - texres->nor[0];
texres->nor[1]= texres->tin - texres->nor[1];
texres->nor[2]= texres->tin - texres->nor[2];
}
static int blend(Tex *tex, const float texvec[3], TexResult *texres)
{
float x, y, t;
if (tex->flag & TEX_FLIPBLEND) {
x= texvec[1];
y= texvec[0];
}
else {
x= texvec[0];
y= texvec[1];
}
if (tex->stype==TEX_LIN) { /* lin */
texres->tin= (1.0f+x)/2.0f;
}
else if (tex->stype==TEX_QUAD) { /* quad */
texres->tin= (1.0f+x)/2.0f;
if (texres->tin<0.0f) texres->tin= 0.0f;
else texres->tin*= texres->tin;
}
else if (tex->stype==TEX_EASE) { /* ease */
texres->tin= (1.0f+x)/2.0f;
if (texres->tin<=0.0f) texres->tin= 0.0f;
else if (texres->tin>=1.0f) texres->tin= 1.0f;
else {
t= texres->tin*texres->tin;
texres->tin= (3.0f*t-2.0f*t*texres->tin);
}
}
else if (tex->stype==TEX_DIAG) { /* diag */
texres->tin= (2.0f+x+y)/4.0f;
}
else if (tex->stype==TEX_RAD) { /* radial */
texres->tin= (atan2(y, x) / (2*M_PI) + 0.5);
}
else { /* sphere TEX_SPHERE */
texres->tin= 1.0-sqrt(x*x+ y*y+texvec[2]*texvec[2]);
if (texres->tin<0.0f) texres->tin= 0.0f;
if (tex->stype==TEX_HALO) texres->tin*= texres->tin; /* halo */
}
BRICONT;
return TEX_INT;
}
/* ------------------------------------------------------------------------- */
/* ************************************************************************* */
/* newnoise: all noisebased types now have different noisebases to choose from */
static int clouds(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
texres->tin = BLI_gTurbulence(tex->noisesize, texvec[0], texvec[1], texvec[2], tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
if (texres->nor!=NULL) {
/* calculate bumpnormal */
texres->nor[0] = BLI_gTurbulence(tex->noisesize, texvec[0] + tex->nabla, texvec[1], texvec[2], tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
texres->nor[1] = BLI_gTurbulence(tex->noisesize, texvec[0], texvec[1] + tex->nabla, texvec[2], tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
texres->nor[2] = BLI_gTurbulence(tex->noisesize, texvec[0], texvec[1], texvec[2] + tex->nabla, tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
if (tex->stype==TEX_COLOR) {
/* in this case, int. value should really be computed from color,
* and bumpnormal from that, would be too slow, looks ok as is */
texres->tr = texres->tin;
texres->tg = BLI_gTurbulence(tex->noisesize, texvec[1], texvec[0], texvec[2], tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
texres->tb = BLI_gTurbulence(tex->noisesize, texvec[1], texvec[2], texvec[0], tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
BRICONTRGB;
texres->ta = 1.0;
return (rv | TEX_RGB);
}
BRICONT;
return rv;
}
/* creates a sine wave */
static float tex_sin(float a)
{
a = 0.5 + 0.5*sin(a);
return a;
}
/* creates a saw wave */
static float tex_saw(float a)
{
const float b = 2*M_PI;
int n = (int)(a / b);
a -= n*b;
if (a < 0) a += b;
return a / b;
}
/* creates a triangle wave */
static float tex_tri(float a)
{
const float b = 2*M_PI;
const float rmax = 1.0;
a = rmax - 2.0f*fabsf(floorf((a*(1.0f/b))+0.5f) - (a*(1.0f/b)));
return a;
}
/* computes basic wood intensity value at x,y,z */
static float wood_int(Tex *tex, float x, float y, float z)
{
float wi = 0;
short wf = tex->noisebasis2; /* wave form: TEX_SIN=0, TEX_SAW=1, TEX_TRI=2 */
short wt = tex->stype; /* wood type: TEX_BAND=0, TEX_RING=1, TEX_BANDNOISE=2, TEX_RINGNOISE=3 */
float (*waveform[3])(float); /* create array of pointers to waveform functions */
waveform[0] = tex_sin; /* assign address of tex_sin() function to pointer array */
waveform[1] = tex_saw;
waveform[2] = tex_tri;
if ((wf>TEX_TRI) || (wf<TEX_SIN)) wf=0; /* check to be sure noisebasis2 is initialized ahead of time */
if (wt==TEX_BAND) {
wi = waveform[wf]((x + y + z)*10.0f);
}
else if (wt==TEX_RING) {
wi = waveform[wf](sqrtf(x*x + y*y + z*z)*20.0f);
}
else if (wt==TEX_BANDNOISE) {
wi = tex->turbul*BLI_gNoise(tex->noisesize, x, y, z, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
wi = waveform[wf]((x + y + z)*10.0f + wi);
}
else if (wt==TEX_RINGNOISE) {
wi = tex->turbul*BLI_gNoise(tex->noisesize, x, y, z, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
wi = waveform[wf](sqrtf(x*x + y*y + z*z)*20.0f + wi);
}
return wi;
}
static int wood(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv=TEX_INT;
texres->tin = wood_int(tex, texvec[0], texvec[1], texvec[2]);
if (texres->nor!=NULL) {
/* calculate bumpnormal */
texres->nor[0] = wood_int(tex, texvec[0] + tex->nabla, texvec[1], texvec[2]);
texres->nor[1] = wood_int(tex, texvec[0], texvec[1] + tex->nabla, texvec[2]);
texres->nor[2] = wood_int(tex, texvec[0], texvec[1], texvec[2] + tex->nabla);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
/* computes basic marble intensity at x,y,z */
static float marble_int(Tex *tex, float x, float y, float z)
{
float n, mi;
short wf = tex->noisebasis2; /* wave form: TEX_SIN=0, TEX_SAW=1, TEX_TRI=2 */
short mt = tex->stype; /* marble type: TEX_SOFT=0, TEX_SHARP=1,TEX_SHAPER=2 */
float (*waveform[3])(float); /* create array of pointers to waveform functions */
waveform[0] = tex_sin; /* assign address of tex_sin() function to pointer array */
waveform[1] = tex_saw;
waveform[2] = tex_tri;
if ((wf>TEX_TRI) || (wf<TEX_SIN)) wf=0; /* check to be sure noisebasis2 isn't initialized ahead of time */
n = 5.0f * (x + y + z);
mi = n + tex->turbul * BLI_gTurbulence(tex->noisesize, x, y, z, tex->noisedepth, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
if (mt>=TEX_SOFT) { /* TEX_SOFT always true */
mi = waveform[wf](mi);
if (mt==TEX_SHARP) {
mi = sqrt(mi);
}
else if (mt==TEX_SHARPER) {
mi = sqrt(sqrt(mi));
}
}
return mi;
}
static int marble(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv=TEX_INT;
texres->tin = marble_int(tex, texvec[0], texvec[1], texvec[2]);
if (texres->nor!=NULL) {
/* calculate bumpnormal */
texres->nor[0] = marble_int(tex, texvec[0] + tex->nabla, texvec[1], texvec[2]);
texres->nor[1] = marble_int(tex, texvec[0], texvec[1] + tex->nabla, texvec[2]);
texres->nor[2] = marble_int(tex, texvec[0], texvec[1], texvec[2] + tex->nabla);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
/* ------------------------------------------------------------------------- */
static int magic(Tex *tex, const float texvec[3], TexResult *texres)
{
float x, y, z, turb;
int n;
n= tex->noisedepth;
turb= tex->turbul/5.0f;
x= sin( ( texvec[0]+texvec[1]+texvec[2])*5.0f );
y= cos( (-texvec[0]+texvec[1]-texvec[2])*5.0f );
z= -cos( (-texvec[0]-texvec[1]+texvec[2])*5.0f );
if (n>0) {
x*= turb;
y*= turb;
z*= turb;
y= -cos(x-y+z);
y*= turb;
if (n>1) {
x= cos(x-y-z);
x*= turb;
if (n>2) {
z= sin(-x-y-z);
z*= turb;
if (n>3) {
x= -cos(-x+y-z);
x*= turb;
if (n>4) {
y= -sin(-x+y+z);
y*= turb;
if (n>5) {
y= -cos(-x+y+z);
y*= turb;
if (n>6) {
x= cos(x+y+z);
x*= turb;
if (n>7) {
z= sin(x+y-z);
z*= turb;
if (n>8) {
x= -cos(-x-y+z);
x*= turb;
if (n>9) {
y= -sin(x-y+z);
y*= turb;
}
}
}
}
}
}
}
}
}
}
if (turb!=0.0f) {
turb*= 2.0f;
x/= turb;
y/= turb;
z/= turb;
}
texres->tr = 0.5f - x;
texres->tg = 0.5f - y;
texres->tb = 0.5f - z;
texres->tin= (1.0f / 3.0f) * (texres->tr + texres->tg + texres->tb);
BRICONTRGB;
texres->ta = 1.0f;
return TEX_RGB;
}
/* ------------------------------------------------------------------------- */
/* newnoise: stucci also modified to use different noisebasis */
static int stucci(Tex *tex, const float texvec[3], TexResult *texres)
{
float nor[3], b2, ofs;
int retval= TEX_INT;
b2= BLI_gNoise(tex->noisesize, texvec[0], texvec[1], texvec[2], (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
ofs= tex->turbul/200.0f;
if (tex->stype) ofs*=(b2*b2);
nor[0] = BLI_gNoise(tex->noisesize, texvec[0]+ofs, texvec[1], texvec[2], (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
nor[1] = BLI_gNoise(tex->noisesize, texvec[0], texvec[1]+ofs, texvec[2], (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
nor[2] = BLI_gNoise(tex->noisesize, texvec[0], texvec[1], texvec[2]+ofs, (tex->noisetype!=TEX_NOISESOFT), tex->noisebasis);
texres->tin= nor[2];
if (texres->nor) {
copy_v3_v3(texres->nor, nor);
tex_normal_derivate(tex, texres);
if (tex->stype==TEX_WALLOUT) {
texres->nor[0]= -texres->nor[0];
texres->nor[1]= -texres->nor[1];
texres->nor[2]= -texres->nor[2];
}
retval |= TEX_NOR;
}
if (tex->stype==TEX_WALLOUT)
texres->tin= 1.0f-texres->tin;
if (texres->tin<0.0f)
texres->tin= 0.0f;
return retval;
}
/* ------------------------------------------------------------------------- */
/* newnoise: musgrave terrain noise types */
static float mg_mFractalOrfBmTex(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
float (*mgravefunc)(float, float, float, float, float, float, int);
if (tex->stype==TEX_MFRACTAL)
mgravefunc = mg_MultiFractal;
else
mgravefunc = mg_fBm;
texres->tin = tex->ns_outscale*mgravefunc(texvec[0], texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->noisebasis);
if (texres->nor!=NULL) {
float offs= tex->nabla/tex->noisesize; /* also scaling of texvec */
/* calculate bumpnormal */
texres->nor[0] = tex->ns_outscale*mgravefunc(texvec[0] + offs, texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->noisebasis);
texres->nor[1] = tex->ns_outscale*mgravefunc(texvec[0], texvec[1] + offs, texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->noisebasis);
texres->nor[2] = tex->ns_outscale*mgravefunc(texvec[0], texvec[1], texvec[2] + offs, tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->noisebasis);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
static float mg_ridgedOrHybridMFTex(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
float (*mgravefunc)(float, float, float, float, float, float, float, float, int);
if (tex->stype==TEX_RIDGEDMF)
mgravefunc = mg_RidgedMultiFractal;
else
mgravefunc = mg_HybridMultiFractal;
texres->tin = tex->ns_outscale*mgravefunc(texvec[0], texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->mg_gain, tex->noisebasis);
if (texres->nor!=NULL) {
float offs= tex->nabla/tex->noisesize; /* also scaling of texvec */
/* calculate bumpnormal */
texres->nor[0] = tex->ns_outscale*mgravefunc(texvec[0] + offs, texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->mg_gain, tex->noisebasis);
texres->nor[1] = tex->ns_outscale*mgravefunc(texvec[0], texvec[1] + offs, texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->mg_gain, tex->noisebasis);
texres->nor[2] = tex->ns_outscale*mgravefunc(texvec[0], texvec[1], texvec[2] + offs, tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->mg_gain, tex->noisebasis);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
static float mg_HTerrainTex(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
texres->tin = tex->ns_outscale*mg_HeteroTerrain(texvec[0], texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->noisebasis);
if (texres->nor!=NULL) {
float offs= tex->nabla/tex->noisesize; /* also scaling of texvec */
/* calculate bumpnormal */
texres->nor[0] = tex->ns_outscale*mg_HeteroTerrain(texvec[0] + offs, texvec[1], texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->noisebasis);
texres->nor[1] = tex->ns_outscale*mg_HeteroTerrain(texvec[0], texvec[1] + offs, texvec[2], tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->noisebasis);
texres->nor[2] = tex->ns_outscale*mg_HeteroTerrain(texvec[0], texvec[1], texvec[2] + offs, tex->mg_H, tex->mg_lacunarity, tex->mg_octaves, tex->mg_offset, tex->noisebasis);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
static float mg_distNoiseTex(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
texres->tin = mg_VLNoise(texvec[0], texvec[1], texvec[2], tex->dist_amount, tex->noisebasis, tex->noisebasis2);
if (texres->nor!=NULL) {
float offs= tex->nabla/tex->noisesize; /* also scaling of texvec */
/* calculate bumpnormal */
texres->nor[0] = mg_VLNoise(texvec[0] + offs, texvec[1], texvec[2], tex->dist_amount, tex->noisebasis, tex->noisebasis2);
texres->nor[1] = mg_VLNoise(texvec[0], texvec[1] + offs, texvec[2], tex->dist_amount, tex->noisebasis, tex->noisebasis2);
texres->nor[2] = mg_VLNoise(texvec[0], texvec[1], texvec[2] + offs, tex->dist_amount, tex->noisebasis, tex->noisebasis2);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
BRICONT;
return rv;
}
/* ------------------------------------------------------------------------- */
/* newnoise: Voronoi texture type, probably the slowest, especially with minkovsky, bumpmapping, could be done another way */
static float voronoiTex(Tex *tex, const float texvec[3], TexResult *texres)
{
int rv = TEX_INT;
float da[4], pa[12]; /* distance and point coordinate arrays of 4 nearest neighbors */
float aw1 = fabs(tex->vn_w1);
float aw2 = fabs(tex->vn_w2);
float aw3 = fabs(tex->vn_w3);
float aw4 = fabs(tex->vn_w4);
float sc = (aw1 + aw2 + aw3 + aw4);
if (sc!=0.f) sc = tex->ns_outscale/sc;
voronoi(texvec[0], texvec[1], texvec[2], da, pa, tex->vn_mexp, tex->vn_distm);
texres->tin = sc * fabsf(tex->vn_w1*da[0] + tex->vn_w2*da[1] + tex->vn_w3*da[2] + tex->vn_w4*da[3]);
if (tex->vn_coltype) {
float ca[3]; /* cell color */
cellNoiseV(pa[0], pa[1], pa[2], ca);
texres->tr = aw1*ca[0];
texres->tg = aw1*ca[1];
texres->tb = aw1*ca[2];
cellNoiseV(pa[3], pa[4], pa[5], ca);
texres->tr += aw2*ca[0];
texres->tg += aw2*ca[1];
texres->tb += aw2*ca[2];
cellNoiseV(pa[6], pa[7], pa[8], ca);
texres->tr += aw3*ca[0];
texres->tg += aw3*ca[1];
texres->tb += aw3*ca[2];
cellNoiseV(pa[9], pa[10], pa[11], ca);
texres->tr += aw4*ca[0];
texres->tg += aw4*ca[1];
texres->tb += aw4*ca[2];
if (tex->vn_coltype>=2) {
float t1 = (da[1]-da[0])*10;
if (t1>1) t1=1;
if (tex->vn_coltype==3) t1*=texres->tin; else t1*=sc;
texres->tr *= t1;
texres->tg *= t1;
texres->tb *= t1;
}
else {
texres->tr *= sc;
texres->tg *= sc;
texres->tb *= sc;
}
}
if (texres->nor!=NULL) {
float offs= tex->nabla/tex->noisesize; /* also scaling of texvec */
/* calculate bumpnormal */
voronoi(texvec[0] + offs, texvec[1], texvec[2], da, pa, tex->vn_mexp, tex->vn_distm);
texres->nor[0] = sc * fabsf(tex->vn_w1*da[0] + tex->vn_w2*da[1] + tex->vn_w3*da[2] + tex->vn_w4*da[3]);
voronoi(texvec[0], texvec[1] + offs, texvec[2], da, pa, tex->vn_mexp, tex->vn_distm);
texres->nor[1] = sc * fabsf(tex->vn_w1*da[0] + tex->vn_w2*da[1] + tex->vn_w3*da[2] + tex->vn_w4*da[3]);
voronoi(texvec[0], texvec[1], texvec[2] + offs, da, pa, tex->vn_mexp, tex->vn_distm);
texres->nor[2] = sc * fabsf(tex->vn_w1*da[0] + tex->vn_w2*da[1] + tex->vn_w3*da[2] + tex->vn_w4*da[3]);
tex_normal_derivate(tex, texres);
rv |= TEX_NOR;
}
if (tex->vn_coltype) {
BRICONTRGB;
texres->ta = 1.0;
return (rv | TEX_RGB);
}
BRICONT;
return rv;
}
/* ------------------------------------------------------------------------- */
static int texnoise(Tex *tex, TexResult *texres)
{
float div=3.0;
int val, ran, loop;
ran= BLI_rand();
val= (ran & 3);
loop= tex->noisedepth;
while (loop--) {
ran= (ran>>2);
val*= (ran & 3);
div*= 3.0f;
}
texres->tin= ((float)val)/div;
BRICONT;
return TEX_INT;
}
/* ------------------------------------------------------------------------- */
static int cubemap_glob(const float n[3], float x, float y, float z, float *adr1, float *adr2)
{
float x1, y1, z1, nor[3];
int ret;
if (n==NULL) {
nor[0]= x; nor[1]= y; nor[2]= z; /* use local render coord */
}
else {
copy_v3_v3(nor, n);
}
mul_mat3_m4_v3(R.viewinv, nor);
x1= fabs(nor[0]);
y1= fabs(nor[1]);
z1= fabs(nor[2]);
if (z1>=x1 && z1>=y1) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (y + 1.0f) / 2.0f;
ret= 0;
}
else if (y1>=x1 && y1>=z1) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 1;
}
else {
*adr1 = (y + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 2;
}
return ret;
}
/* ------------------------------------------------------------------------- */
/* mtex argument only for projection switches */
static int cubemap(MTex *mtex, VlakRen *vlr, const float n[3], float x, float y, float z, float *adr1, float *adr2)
{
int proj[4]={0, ME_PROJXY, ME_PROJXZ, ME_PROJYZ}, ret= 0;
if (vlr) {
int index;
/* Mesh vertices have such flags, for others we calculate it once based on orco */
if ((vlr->puno & (ME_PROJXY|ME_PROJXZ|ME_PROJYZ))==0) {
/* test for v1, vlr can be faked for baking */
if (vlr->v1 && vlr->v1->orco) {
float nor[3];
normal_tri_v3(nor, vlr->v1->orco, vlr->v2->orco, vlr->v3->orco);
if (fabsf(nor[0]) < fabsf(nor[2]) && fabsf(nor[1]) < fabsf(nor[2])) vlr->puno |= ME_PROJXY;
else if (fabsf(nor[0]) < fabsf(nor[1]) && fabsf(nor[2]) < fabsf(nor[1])) vlr->puno |= ME_PROJXZ;
else vlr->puno |= ME_PROJYZ;
}
else return cubemap_glob(n, x, y, z, adr1, adr2);
}
if (mtex) {
/* the mtex->proj{xyz} have type char. maybe this should be wider? */
/* casting to int ensures that the index type is right. */
index = (int) mtex->projx;
proj[index]= ME_PROJXY;
index = (int) mtex->projy;
proj[index]= ME_PROJXZ;
index = (int) mtex->projz;
proj[index]= ME_PROJYZ;
}
if (vlr->puno & proj[1]) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (y + 1.0f) / 2.0f;
}
else if (vlr->puno & proj[2]) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 1;
}
else {
*adr1 = (y + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 2;
}
}
else {
return cubemap_glob(n, x, y, z, adr1, adr2);
}
return ret;
}
/* ------------------------------------------------------------------------- */
static int cubemap_ob(Object *ob, const float n[3], float x, float y, float z, float *adr1, float *adr2)
{
float x1, y1, z1, nor[3];
int ret;
if (n==NULL) return 0;
copy_v3_v3(nor, n);
if (ob) mul_mat3_m4_v3(ob->imat, nor);
x1= fabs(nor[0]);
y1= fabs(nor[1]);
z1= fabs(nor[2]);
if (z1>=x1 && z1>=y1) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (y + 1.0f) / 2.0f;
ret= 0;
}
else if (y1>=x1 && y1>=z1) {
*adr1 = (x + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 1;
}
else {
*adr1 = (y + 1.0f) / 2.0f;
*adr2 = (z + 1.0f) / 2.0f;
ret= 2;
}
return ret;
}
/* ------------------------------------------------------------------------- */
static void do_2d_mapping(MTex *mtex, float texvec[3], VlakRen *vlr, const float n[3], float dxt[3], float dyt[3])
{
Tex *tex;
Object *ob= NULL;
float fx, fy, fac1, area[8];
int ok, proj, areaflag= 0, wrap, texco;
/* mtex variables localized, only cubemap doesn't cooperate yet... */
wrap= mtex->mapping;
tex= mtex->tex;
ob= mtex->object;
texco= mtex->texco;
if (R.osa==0) {
if (wrap==MTEX_FLAT) {
fx = (texvec[0] + 1.0f) / 2.0f;
fy = (texvec[1] + 1.0f) / 2.0f;
}
else if (wrap == MTEX_TUBE) map_to_tube( &fx, &fy, texvec[0], texvec[1], texvec[2]);
else if (wrap == MTEX_SPHERE) map_to_sphere(&fx, &fy, texvec[0], texvec[1], texvec[2]);
else {
if (texco == TEXCO_OBJECT) cubemap_ob(ob, n, texvec[0], texvec[1], texvec[2], &fx, &fy);
else if (texco == TEXCO_GLOB) cubemap_glob(n, texvec[0], texvec[1], texvec[2], &fx, &fy);
else cubemap(mtex, vlr, n, texvec[0], texvec[1], texvec[2], &fx, &fy);
}
/* repeat */
if (tex->extend==TEX_REPEAT) {
if (tex->xrepeat>1) {
float origf= fx *= tex->xrepeat;
if (fx>1.0f) fx -= (int)(fx);
else if (fx<0.0f) fx+= 1-(int)(fx);
if (tex->flag & TEX_REPEAT_XMIR) {
int orig= (int)floor(origf);
if (orig & 1)
fx= 1.0f-fx;
}
}
if (tex->yrepeat>1) {
float origf= fy *= tex->yrepeat;
if (fy>1.0f) fy -= (int)(fy);
else if (fy<0.0f) fy+= 1-(int)(fy);
if (tex->flag & TEX_REPEAT_YMIR) {
int orig= (int)floor(origf);
if (orig & 1)
fy= 1.0f-fy;
}
}
}
/* crop */
if (tex->cropxmin!=0.0f || tex->cropxmax!=1.0f) {
fac1= tex->cropxmax - tex->cropxmin;
fx= tex->cropxmin+ fx*fac1;
}
if (tex->cropymin!=0.0f || tex->cropymax!=1.0f) {
fac1= tex->cropymax - tex->cropymin;
fy= tex->cropymin+ fy*fac1;
}
texvec[0]= fx;
texvec[1]= fy;
}
else {
if (wrap==MTEX_FLAT) {
fx= (texvec[0] + 1.0f) / 2.0f;
fy= (texvec[1] + 1.0f) / 2.0f;
dxt[0]/= 2.0f;
dxt[1]/= 2.0f;
dxt[2]/= 2.0f;
dyt[0]/= 2.0f;
dyt[1]/= 2.0f;
dyt[2]/= 2.0f;
}
else if (ELEM(wrap, MTEX_TUBE, MTEX_SPHERE)) {
/* exception: the seam behind (y<0.0) */
ok= 1;
if (texvec[1]<=0.0f) {
fx= texvec[0]+dxt[0];
fy= texvec[0]+dyt[0];
if (fx>=0.0f && fy>=0.0f && texvec[0]>=0.0f) {
/* pass */
}
else if (fx<=0.0f && fy<=0.0f && texvec[0]<=0.0f) {
/* pass */
}
else {
ok = 0;
}
}
if (ok) {
if (wrap==MTEX_TUBE) {
map_to_tube(area, area+1, texvec[0], texvec[1], texvec[2]);
map_to_tube(area + 2, area + 3, texvec[0] + dxt[0], texvec[1] + dxt[1], texvec[2] + dxt[2]);
map_to_tube(area + 4, area + 5, texvec[0] + dyt[0], texvec[1] + dyt[1], texvec[2] + dyt[2]);
}
else {
map_to_sphere(area, area+1, texvec[0], texvec[1], texvec[2]);
map_to_sphere(area + 2, area + 3, texvec[0] + dxt[0], texvec[1] + dxt[1], texvec[2] + dxt[2]);
map_to_sphere(area + 4, area + 5, texvec[0] + dyt[0], texvec[1] + dyt[1], texvec[2] + dyt[2]);
}
areaflag= 1;
}
else {
if (wrap==MTEX_TUBE) map_to_tube( &fx, &fy, texvec[0], texvec[1], texvec[2]);
else map_to_sphere(&fx, &fy, texvec[0], texvec[1], texvec[2]);
dxt[0]/= 2.0f;
dxt[1]/= 2.0f;
dyt[0]/= 2.0f;
dyt[1]/= 2.0f;
}
}
else {
if (texco==TEXCO_OBJECT) proj = cubemap_ob(ob, n, texvec[0], texvec[1], texvec[2], &fx, &fy);
else if (texco==TEXCO_GLOB) proj = cubemap_glob(n, texvec[0], texvec[1], texvec[2], &fx, &fy);
else proj = cubemap(mtex, vlr, n, texvec[0], texvec[1], texvec[2], &fx, &fy);
if (proj==1) {
SWAP(float, dxt[1], dxt[2]);
SWAP(float, dyt[1], dyt[2]);
}
else if (proj==2) {
float f1= dxt[0], f2= dyt[0];
dxt[0]= dxt[1];
dyt[0]= dyt[1];
dxt[1]= dxt[2];
dyt[1]= dyt[2];
dxt[2]= f1;
dyt[2]= f2;
}
dxt[0] *= 0.5f;
dxt[1] *= 0.5f;
dxt[2] *= 0.5f;
dyt[0] *= 0.5f;
dyt[1] *= 0.5f;
dyt[2] *= 0.5f;
}
/* if area, then reacalculate dxt[] and dyt[] */
if (areaflag) {
fx= area[0];
fy= area[1];
dxt[0]= area[2]-fx;
dxt[1]= area[3]-fy;
dyt[0]= area[4]-fx;
dyt[1]= area[5]-fy;
}
/* repeat */
if (tex->extend==TEX_REPEAT) {
float max= 1.0f;
if (tex->xrepeat>1) {
float origf= fx *= tex->xrepeat;
/* TXF: omit mirror here, see comments in do_material_tex() after do_2d_mapping() call */
if (tex->texfilter == TXF_BOX) {
if (fx>1.0f) fx -= (int)(fx);
else if (fx<0.0f) fx+= 1-(int)(fx);
if (tex->flag & TEX_REPEAT_XMIR) {
int orig= (int)floor(origf);
if (orig & 1)
fx= 1.0f-fx;
}
}
max= tex->xrepeat;
dxt[0]*= tex->xrepeat;
dyt[0]*= tex->xrepeat;
}
if (tex->yrepeat>1) {
float origf= fy *= tex->yrepeat;
/* TXF: omit mirror here, see comments in do_material_tex() after do_2d_mapping() call */
if (tex->texfilter == TXF_BOX) {
if (fy>1.0f) fy -= (int)(fy);
else if (fy<0.0f) fy+= 1-(int)(fy);
if (tex->flag & TEX_REPEAT_YMIR) {
int orig= (int)floor(origf);
if (orig & 1)
fy= 1.0f-fy;
}
}
if (max<tex->yrepeat)
max= tex->yrepeat;
dxt[1]*= tex->yrepeat;
dyt[1]*= tex->yrepeat;
}
if (max!=1.0f) {
dxt[2]*= max;
dyt[2]*= max;
}
}
/* crop */
if (tex->cropxmin!=0.0f || tex->cropxmax!=1.0f) {
fac1= tex->cropxmax - tex->cropxmin;
fx= tex->cropxmin+ fx*fac1;
dxt[0]*= fac1;
dyt[0]*= fac1;
}
if (tex->cropymin!=0.0f || tex->cropymax!=1.0f) {
fac1= tex->cropymax - tex->cropymin;
fy= tex->cropymin+ fy*fac1;
dxt[1]*= fac1;
dyt[1]*= fac1;
}
texvec[0]= fx;
texvec[1]= fy;
}
}
/* ************************************** */
static int multitex(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres, const short thread, short which_output, struct ImagePool *pool)
{
float tmpvec[3];
int retval = 0; /* return value, int:0, col:1, nor:2, everything:3 */
texres->talpha = FALSE; /* is set when image texture returns alpha (considered premul) */
if (tex->use_nodes && tex->nodetree) {
retval = ntreeTexExecTree(tex->nodetree, texres, texvec, dxt, dyt, osatex, thread,
tex, which_output, R.r.cfra, (R.r.scemode & R_TEXNODE_PREVIEW) != 0, NULL, NULL);
}
else {
switch (tex->type) {
case 0:
texres->tin= 0.0f;
return 0;
case TEX_CLOUDS:
retval = clouds(tex, texvec, texres);
break;
case TEX_WOOD:
retval = wood(tex, texvec, texres);
break;
case TEX_MARBLE:
retval = marble(tex, texvec, texres);
break;
case TEX_MAGIC:
retval = magic(tex, texvec, texres);
break;
case TEX_BLEND:
retval = blend(tex, texvec, texres);
break;
case TEX_STUCCI:
retval = stucci(tex, texvec, texres);
break;
case TEX_NOISE:
retval = texnoise(tex, texres);
break;
case TEX_IMAGE:
if (osatex) retval = imagewraposa(tex, tex->ima, NULL, texvec, dxt, dyt, texres, pool);
else retval = imagewrap(tex, tex->ima, NULL, texvec, texres, pool);
BKE_image_tag_time(tex->ima); /* tag image as having being used */
break;
case TEX_ENVMAP:
retval = envmaptex(tex, texvec, dxt, dyt, osatex, texres, pool);
break;
case TEX_MUSGRAVE:
/* newnoise: musgrave types */
/* ton: added this, for Blender convention reason.
* artificer: added the use of tmpvec to avoid scaling texvec
*/
copy_v3_v3(tmpvec, texvec);
mul_v3_fl(tmpvec, 1.0f / tex->noisesize);
switch (tex->stype) {
case TEX_MFRACTAL:
case TEX_FBM:
retval = mg_mFractalOrfBmTex(tex, tmpvec, texres);
break;
case TEX_RIDGEDMF:
case TEX_HYBRIDMF:
retval = mg_ridgedOrHybridMFTex(tex, tmpvec, texres);
break;
case TEX_HTERRAIN:
retval = mg_HTerrainTex(tex, tmpvec, texres);
break;
}
break;
/* newnoise: voronoi type */
case TEX_VORONOI:
/* ton: added this, for Blender convention reason.
* artificer: added the use of tmpvec to avoid scaling texvec
*/
copy_v3_v3(tmpvec, texvec);
mul_v3_fl(tmpvec, 1.0f / tex->noisesize);
retval = voronoiTex(tex, tmpvec, texres);
break;
case TEX_DISTNOISE:
/* ton: added this, for Blender convention reason.
* artificer: added the use of tmpvec to avoid scaling texvec
*/
copy_v3_v3(tmpvec, texvec);
mul_v3_fl(tmpvec, 1.0f / tex->noisesize);
retval = mg_distNoiseTex(tex, tmpvec, texres);
break;
case TEX_POINTDENSITY:
retval = pointdensitytex(tex, texvec, texres);
break;
case TEX_VOXELDATA:
retval = voxeldatatex(tex, texvec, texres);
break;
case TEX_OCEAN:
retval = ocean_texture(tex, texvec, texres);
break;
}
}
if (tex->flag & TEX_COLORBAND) {
float col[4];
if (do_colorband(tex->coba, texres->tin, col)) {
texres->talpha = TRUE;
texres->tr= col[0];
texres->tg= col[1];
texres->tb= col[2];
texres->ta= col[3];
retval |= TEX_RGB;
}
}
return retval;
}
static int multitex_nodes_intern(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres,
const short thread, short which_output, ShadeInput *shi, MTex *mtex, struct ImagePool *pool,
bool scene_color_manage)
{
if (tex==NULL) {
memset(texres, 0, sizeof(TexResult));
return 0;
}
if (mtex)
which_output= mtex->which_output;
if (tex->type==TEX_IMAGE) {
int rgbnor;
if (mtex) {
/* we have mtex, use it for 2d mapping images only */
do_2d_mapping(mtex, texvec, shi->vlr, shi->facenor, dxt, dyt);
rgbnor = multitex(tex, texvec, dxt, dyt, osatex, texres, thread, which_output, pool);
if (mtex->mapto & (MAP_COL+MAP_COLSPEC+MAP_COLMIR)) {
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(&texres->tr, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(tex->ima, ibuf, pool);
}
}
else {
/* we don't have mtex, do default flat 2d projection */
MTex localmtex;
float texvec_l[3], dxt_l[3], dyt_l[3];
localmtex.mapping= MTEX_FLAT;
localmtex.tex= tex;
localmtex.object= NULL;
localmtex.texco= TEXCO_ORCO;
copy_v3_v3(texvec_l, texvec);
if (dxt && dyt) {
copy_v3_v3(dxt_l, dxt);
copy_v3_v3(dyt_l, dyt);
}
else {
zero_v3(dxt_l);
zero_v3(dyt_l);
}
do_2d_mapping(&localmtex, texvec_l, NULL, NULL, dxt_l, dyt_l);
rgbnor = multitex(tex, texvec_l, dxt_l, dyt_l, osatex, texres, thread, which_output, pool);
{
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(&texres->tr, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(tex->ima, ibuf, pool);
}
}
return rgbnor;
}
else {
return multitex(tex, texvec, dxt, dyt, osatex, texres, thread, which_output, pool);
}
}
/* this is called from the shader and texture nodes
* Use it from render pipeline only!
*/
int multitex_nodes(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres,
const short thread, short which_output, ShadeInput *shi, MTex *mtex, struct ImagePool *pool)
{
return multitex_nodes_intern(tex, texvec, dxt, dyt, osatex, texres,
thread, which_output, shi, mtex, pool, R.scene_color_manage);
}
/* this is called for surface shading */
static int multitex_mtex(ShadeInput *shi, MTex *mtex, float texvec[3], float dxt[3], float dyt[3], TexResult *texres, struct ImagePool *pool)
{
Tex *tex = mtex->tex;
if (tex->use_nodes && tex->nodetree) {
/* stupid exception here .. but we have to pass shi and mtex to
* textures nodes for 2d mapping and color management for images */
return ntreeTexExecTree(tex->nodetree, texres, texvec, dxt, dyt, shi->osatex, shi->thread,
tex, mtex->which_output, R.r.cfra, (R.r.scemode & R_TEXNODE_PREVIEW) != 0, shi, mtex);
}
else {
return multitex(mtex->tex, texvec, dxt, dyt, shi->osatex, texres, shi->thread, mtex->which_output, pool);
}
}
/* Warning, if the texres's values are not declared zero, check the return value to be sure
* the color values are set before using the r/g/b values, otherwise you may use uninitialized values - Campbell
*
* Use it for stuff which is out of render pipeline.
*/
int multitex_ext(Tex *tex, float texvec[3], float dxt[3], float dyt[3], int osatex, TexResult *texres, struct ImagePool *pool, bool scene_color_manage)
{
return multitex_nodes_intern(tex, texvec, dxt, dyt, osatex, texres, 0, 0, NULL, NULL, pool, scene_color_manage);
}
/* extern-tex doesn't support nodes (ntreeBeginExec() can't be called when rendering is going on)\
*
* Use it for stuff which is out of render pipeline.
*/
int multitex_ext_safe(Tex *tex, float texvec[3], TexResult *texres, struct ImagePool *pool, bool scene_color_manage)
{
int use_nodes= tex->use_nodes, retval;
tex->use_nodes = FALSE;
retval= multitex_nodes_intern(tex, texvec, NULL, NULL, 0, texres, 0, 0, NULL, NULL, pool, scene_color_manage);
tex->use_nodes= use_nodes;
return retval;
}
/* ------------------------------------------------------------------------- */
/* in = destination, tex = texture, out = previous color */
/* fact = texture strength, facg = button strength value */
void texture_rgb_blend(float in[3], const float tex[3], const float out[3], float fact, float facg, int blendtype)
{
float facm, col;
switch (blendtype) {
case MTEX_BLEND:
fact*= facg;
facm= 1.0f-fact;
in[0]= (fact*tex[0] + facm*out[0]);
in[1]= (fact*tex[1] + facm*out[1]);
in[2]= (fact*tex[2] + facm*out[2]);
break;
case MTEX_MUL:
fact*= facg;
facm= 1.0f-fact;
in[0]= (facm+fact*tex[0])*out[0];
in[1]= (facm+fact*tex[1])*out[1];
in[2]= (facm+fact*tex[2])*out[2];
break;
case MTEX_SCREEN:
fact*= facg;
facm= 1.0f-fact;
in[0]= 1.0f - (facm+fact*(1.0f-tex[0])) * (1.0f-out[0]);
in[1]= 1.0f - (facm+fact*(1.0f-tex[1])) * (1.0f-out[1]);
in[2]= 1.0f - (facm+fact*(1.0f-tex[2])) * (1.0f-out[2]);
break;
case MTEX_OVERLAY:
fact*= facg;
facm= 1.0f-fact;
if (out[0] < 0.5f)
in[0] = out[0] * (facm + 2.0f*fact*tex[0]);
else
in[0] = 1.0f - (facm + 2.0f*fact*(1.0f - tex[0])) * (1.0f - out[0]);
if (out[1] < 0.5f)
in[1] = out[1] * (facm + 2.0f*fact*tex[1]);
else
in[1] = 1.0f - (facm + 2.0f*fact*(1.0f - tex[1])) * (1.0f - out[1]);
if (out[2] < 0.5f)
in[2] = out[2] * (facm + 2.0f*fact*tex[2]);
else
in[2] = 1.0f - (facm + 2.0f*fact*(1.0f - tex[2])) * (1.0f - out[2]);
break;
case MTEX_SUB:
fact= -fact;
case MTEX_ADD:
fact*= facg;
in[0]= (fact*tex[0] + out[0]);
in[1]= (fact*tex[1] + out[1]);
in[2]= (fact*tex[2] + out[2]);
break;
case MTEX_DIV:
fact*= facg;
facm= 1.0f-fact;
if (tex[0]!=0.0f)
in[0]= facm*out[0] + fact*out[0]/tex[0];
if (tex[1]!=0.0f)
in[1]= facm*out[1] + fact*out[1]/tex[1];
if (tex[2]!=0.0f)
in[2]= facm*out[2] + fact*out[2]/tex[2];
break;
case MTEX_DIFF:
fact*= facg;
facm= 1.0f-fact;
in[0]= facm*out[0] + fact*fabsf(tex[0]-out[0]);
in[1]= facm*out[1] + fact*fabsf(tex[1]-out[1]);
in[2]= facm*out[2] + fact*fabsf(tex[2]-out[2]);
break;
case MTEX_DARK:
fact*= facg;
facm= 1.0f-fact;
col= tex[0]+((1-tex[0])*facm);
if (col < out[0]) in[0]= col; else in[0]= out[0];
col= tex[1]+((1-tex[1])*facm);
if (col < out[1]) in[1]= col; else in[1]= out[1];
col= tex[2]+((1-tex[2])*facm);
if (col < out[2]) in[2]= col; else in[2]= out[2];
break;
case MTEX_LIGHT:
fact*= facg;
col= fact*tex[0];
if (col > out[0]) in[0]= col; else in[0]= out[0];
col= fact*tex[1];
if (col > out[1]) in[1]= col; else in[1]= out[1];
col= fact*tex[2];
if (col > out[2]) in[2]= col; else in[2]= out[2];
break;
case MTEX_BLEND_HUE:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_HUE, in, fact, tex);
break;
case MTEX_BLEND_SAT:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_SAT, in, fact, tex);
break;
case MTEX_BLEND_VAL:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_VAL, in, fact, tex);
break;
case MTEX_BLEND_COLOR:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_COLOR, in, fact, tex);
break;
case MTEX_SOFT_LIGHT:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_SOFT, in, fact, tex);
break;
case MTEX_LIN_LIGHT:
fact*= facg;
copy_v3_v3(in, out);
ramp_blend(MA_RAMP_LINEAR, in, fact, tex);
break;
}
}
float texture_value_blend(float tex, float out, float fact, float facg, int blendtype)
{
float in=0.0, facm, col, scf;
int flip= (facg < 0.0f);
facg= fabsf(facg);
fact*= facg;
facm= 1.0f-fact;
if (flip) SWAP(float, fact, facm);
switch (blendtype) {
case MTEX_BLEND:
in= fact*tex + facm*out;
break;
case MTEX_MUL:
facm= 1.0f-facg;
in= (facm+fact*tex)*out;
break;
case MTEX_SCREEN:
facm= 1.0f-facg;
in= 1.0f-(facm+fact*(1.0f-tex))*(1.0f-out);
break;
case MTEX_OVERLAY:
facm= 1.0f-facg;
if (out < 0.5f)
in = out * (facm + 2.0f*fact*tex);
else
in = 1.0f - (facm + 2.0f*fact*(1.0f - tex)) * (1.0f - out);
break;
case MTEX_SUB:
fact= -fact;
case MTEX_ADD:
in= fact*tex + out;
break;
case MTEX_DIV:
if (tex!=0.0f)
in= facm*out + fact*out/tex;
break;
case MTEX_DIFF:
in= facm*out + fact*fabsf(tex-out);
break;
case MTEX_DARK:
col= fact*tex;
if (col < out) in= col; else in= out;
break;
case MTEX_LIGHT:
col= fact*tex;
if (col > out) in= col; else in= out;
break;
case MTEX_SOFT_LIGHT:
scf=1.0f - (1.0f - tex) * (1.0f - out);
in= facm*out + fact * ((1.0f - out) * tex * out) + (out * scf);
break;
case MTEX_LIN_LIGHT:
if (tex > 0.5f)
in = out + fact*(2.0f*(tex - 0.5f));
else
in = out + fact*(2.0f*tex - 1.0f);
break;
}
return in;
}
static void texco_mapping(ShadeInput *shi, Tex *tex, MTex *mtex,
const float co[3], const float dx[3], const float dy[3], float texvec[3], float dxt[3], float dyt[3])
{
/* new: first swap coords, then map, then trans/scale */
if (tex->type == TEX_IMAGE) {
/* placement */
texvec[0] = mtex->projx ? co[mtex->projx - 1] : 0.f;
texvec[1] = mtex->projy ? co[mtex->projy - 1] : 0.f;
texvec[2] = mtex->projz ? co[mtex->projz - 1] : 0.f;
if (shi->osatex) {
if (mtex->projx) {
dxt[0] = dx[mtex->projx - 1];
dyt[0] = dy[mtex->projx - 1];
}
else dxt[0] = dyt[0] = 0.f;
if (mtex->projy) {
dxt[1] = dx[mtex->projy - 1];
dyt[1] = dy[mtex->projy - 1];
}
else dxt[1] = dyt[1] = 0.f;
if (mtex->projz) {
dxt[2] = dx[mtex->projz - 1];
dyt[2] = dy[mtex->projz - 1];
}
else dxt[2] = dyt[2] = 0.f;
}
do_2d_mapping(mtex, texvec, shi->vlr, shi->facenor, dxt, dyt);
/* translate and scale */
texvec[0] = mtex->size[0]*(texvec[0] - 0.5f) + mtex->ofs[0] + 0.5f;
texvec[1] = mtex->size[1]*(texvec[1] - 0.5f) + mtex->ofs[1] + 0.5f;
if (shi->osatex) {
dxt[0] = mtex->size[0] * dxt[0];
dxt[1] = mtex->size[1] * dxt[1];
dyt[0] = mtex->size[0] * dyt[0];
dyt[1] = mtex->size[1] * dyt[1];
}
/* problem: repeat-mirror is not a 'repeat' but 'extend' in imagetexture.c */
/* TXF: bug was here, only modify texvec when repeat mode set, old code affected other modes too.
* New texfilters solve mirroring differently so that it also works correctly when
* textures are scaled (sizeXYZ) as well as repeated. See also modification in do_2d_mapping().
* (since currently only done in osa mode, results will look incorrect without osa TODO) */
if (tex->extend == TEX_REPEAT && (tex->flag & TEX_REPEAT_XMIR)) {
if (tex->texfilter == TXF_BOX)
texvec[0] -= floorf(texvec[0]); /* this line equivalent to old code, same below */
else if (texvec[0] < 0.f || texvec[0] > 1.f) {
const float tx = 0.5f*texvec[0];
texvec[0] = 2.f*(tx - floorf(tx));
if (texvec[0] > 1.f) texvec[0] = 2.f - texvec[0];
}
}
if (tex->extend == TEX_REPEAT && (tex->flag & TEX_REPEAT_YMIR)) {
if (tex->texfilter == TXF_BOX)
texvec[1] -= floorf(texvec[1]);
else if (texvec[1] < 0.f || texvec[1] > 1.f) {
const float ty = 0.5f*texvec[1];
texvec[1] = 2.f*(ty - floorf(ty));
if (texvec[1] > 1.f) texvec[1] = 2.f - texvec[1];
}
}
}
else { /* procedural */
/* placement */
texvec[0] = mtex->size[0]*(mtex->projx ? (co[mtex->projx - 1] + mtex->ofs[0]) : mtex->ofs[0]);
texvec[1] = mtex->size[1]*(mtex->projy ? (co[mtex->projy - 1] + mtex->ofs[1]) : mtex->ofs[1]);
texvec[2] = mtex->size[2]*(mtex->projz ? (co[mtex->projz - 1] + mtex->ofs[2]) : mtex->ofs[2]);
if (shi->osatex) {
if (mtex->projx) {
dxt[0] = mtex->size[0]*dx[mtex->projx - 1];
dyt[0] = mtex->size[0]*dy[mtex->projx - 1];
}
else dxt[0] = dyt[0] = 0.f;
if (mtex->projy) {
dxt[1] = mtex->size[1]*dx[mtex->projy - 1];
dyt[1] = mtex->size[1]*dy[mtex->projy - 1];
}
else dxt[1] = dyt[1] = 0.f;
if (mtex->projz) {
dxt[2] = mtex->size[2]*dx[mtex->projz - 1];
dyt[2] = mtex->size[2]*dy[mtex->projz - 1];
}
else dxt[2]= dyt[2] = 0.f;
}
}
}
/* Bump code from 2.5 development cycle, has a number of bugs, but here for compatibility */
typedef struct CompatibleBump {
float nu[3], nv[3], nn[3];
float dudnu, dudnv, dvdnu, dvdnv;
int nunvdone;
} CompatibleBump;
static void compatible_bump_init(CompatibleBump *compat_bump)
{
memset(compat_bump, 0, sizeof(*compat_bump));
compat_bump->dudnu = 1.0f;
compat_bump->dvdnv = 1.0f;
}
static void compatible_bump_uv_derivs(CompatibleBump *compat_bump, ShadeInput *shi, MTex *mtex, int i)
{
/* uvmapping only, calculation of normal tangent u/v partial derivatives
* (should not be here, dudnu, dudnv, dvdnu & dvdnv should probably be part of ShadeInputUV struct,
* nu/nv in ShadeInput and this calculation should then move to shadeinput.c,
* shade_input_set_shade_texco() func.) */
/* NOTE: test for shi->obr->ob here,
* since vlr/obr/obi can be 'fake' when called from fastshade(), another reason to move it.. */
/* NOTE: shi->v1 is NULL when called from displace_render_vert,
* assigning verts in this case is not trivial because the shi quad face side is not know. */
if ((mtex->texflag & MTEX_COMPAT_BUMP) && shi->obr && shi->obr->ob && shi->v1) {
if (mtex->mapto & (MAP_NORM|MAP_WARP) && !((mtex->tex->type==TEX_IMAGE) && (mtex->tex->imaflag & TEX_NORMALMAP))) {
MTFace* tf = RE_vlakren_get_tface(shi->obr, shi->vlr, i, NULL, 0);
int j1 = shi->i1, j2 = shi->i2, j3 = shi->i3;
vlr_set_uv_indices(shi->vlr, &j1, &j2, &j3);
/* compute ortho basis around normal */
if (!compat_bump->nunvdone) {
/* render normal is negated */
compat_bump->nn[0] = -shi->vn[0];
compat_bump->nn[1] = -shi->vn[1];
compat_bump->nn[2] = -shi->vn[2];
ortho_basis_v3v3_v3(compat_bump->nu, compat_bump->nv, compat_bump->nn);
compat_bump->nunvdone = TRUE;
}
if (tf) {
float *uv1 = tf->uv[j1], *uv2 = tf->uv[j2], *uv3 = tf->uv[j3];
const float an[3] = {fabsf(compat_bump->nn[0]), fabsf(compat_bump->nn[1]), fabsf(compat_bump->nn[2])};
const int a1 = (an[0] > an[1] && an[0] > an[2]) ? 1 : 0;
const int a2 = (an[2] > an[0] && an[2] > an[1]) ? 1 : 2;
const float dp1_a1 = shi->v1->co[a1] - shi->v3->co[a1];
const float dp1_a2 = shi->v1->co[a2] - shi->v3->co[a2];
const float dp2_a1 = shi->v2->co[a1] - shi->v3->co[a1];
const float dp2_a2 = shi->v2->co[a2] - shi->v3->co[a2];
const float du1 = uv1[0] - uv3[0], du2 = uv2[0] - uv3[0];
const float dv1 = uv1[1] - uv3[1], dv2 = uv2[1] - uv3[1];
const float dpdu_a1 = dv2*dp1_a1 - dv1*dp2_a1;
const float dpdu_a2 = dv2*dp1_a2 - dv1*dp2_a2;
const float dpdv_a1 = du1*dp2_a1 - du2*dp1_a1;
const float dpdv_a2 = du1*dp2_a2 - du2*dp1_a2;
float d = dpdu_a1*dpdv_a2 - dpdv_a1*dpdu_a2;
float uvd = du1*dv2 - dv1*du2;
if (uvd == 0.f) uvd = 1e-5f;
if (d == 0.f) d = 1e-5f;
d = uvd / d;
compat_bump->dudnu = (dpdv_a2*compat_bump->nu[a1] - dpdv_a1*compat_bump->nu[a2])*d;
compat_bump->dvdnu = (dpdu_a1*compat_bump->nu[a2] - dpdu_a2*compat_bump->nu[a1])*d;
compat_bump->dudnv = (dpdv_a2*compat_bump->nv[a1] - dpdv_a1*compat_bump->nv[a2])*d;
compat_bump->dvdnv = (dpdu_a1*compat_bump->nv[a2] - dpdu_a2*compat_bump->nv[a1])*d;
}
}
}
}
static int compatible_bump_compute(CompatibleBump *compat_bump, ShadeInput *shi, MTex *mtex, Tex *tex, TexResult *texres,
float Tnor, const float co[3], const float dx[3], const float dy[3], float texvec[3], float dxt[3], float dyt[3],
struct ImagePool *pool)
{
TexResult ttexr = {0, 0, 0, 0, 0, texres->talpha, NULL}; /* temp TexResult */
float tco[3], texv[3], cd, ud, vd, du, dv, idu, idv;
const int fromrgb = ((tex->type == TEX_IMAGE) || ((tex->flag & TEX_COLORBAND)!=0));
const float bf = -0.04f*Tnor*mtex->norfac;
int rgbnor;
/* disable internal bump eval */
float* nvec = texres->nor;
texres->nor = NULL;
/* du & dv estimates, constant value defaults */
du = dv = 0.01f;
/* compute ortho basis around normal */
if (!compat_bump->nunvdone) {
/* render normal is negated */
negate_v3_v3(compat_bump->nn, shi->vn);
ortho_basis_v3v3_v3(compat_bump->nu, compat_bump->nv, compat_bump->nn);
compat_bump->nunvdone = TRUE;
}
/* two methods, either constant based on main image resolution,
* (which also works without osa, though of course not always good (or even very bad) results),
* or based on tex derivative max values (osa only). Not sure which is best... */
if (!shi->osatex && (tex->type == TEX_IMAGE) && tex->ima) {
/* in case we have no proper derivatives, fall back to
* computing du/dv it based on image size */
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
if (ibuf) {
du = 1.f/(float)ibuf->x;
dv = 1.f/(float)ibuf->y;
}
BKE_image_pool_release_ibuf(tex->ima, ibuf, pool);
}
else if (shi->osatex) {
/* we have derivatives, can compute proper du/dv */
if (tex->type == TEX_IMAGE) { /* 2d image, use u & v max. of dx/dy 2d vecs */
const float adx[2] = {fabsf(dx[0]), fabsf(dx[1])};
const float ady[2] = {fabsf(dy[0]), fabsf(dy[1])};
du = MAX2(adx[0], ady[0]);
dv = MAX2(adx[1], ady[1]);
}
else { /* 3d procedural, estimate from all dx/dy elems */
const float adx[3] = {fabsf(dx[0]), fabsf(dx[1]), fabsf(dx[2])};
const float ady[3] = {fabsf(dy[0]), fabsf(dy[1]), fabsf(dy[2])};
du = max_fff(adx[0], adx[1], adx[2]);
dv = max_fff(ady[0], ady[1], ady[2]);
}
}
/* center, main return value */
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
rgbnor = multitex_mtex(shi, mtex, texvec, dxt, dyt, texres, pool);
cd = fromrgb ? (texres->tr + texres->tg + texres->tb) / 3.0f : texres->tin;
if (mtex->texco == TEXCO_UV) {
/* for the uv case, use the same value for both du/dv,
* since individually scaling the normal derivatives makes them useless... */
du = min_ff(du, dv);
idu = (du < 1e-5f) ? bf : (bf/du);
/* +u val */
tco[0] = co[0] + compat_bump->dudnu*du;
tco[1] = co[1] + compat_bump->dvdnu*du;
tco[2] = 0.f;
texco_mapping(shi, tex, mtex, tco, dx, dy, texv, dxt, dyt);
multitex_mtex(shi, mtex, texv, dxt, dyt, &ttexr, pool);
ud = idu*(cd - (fromrgb ? (ttexr.tr + ttexr.tg + ttexr.tb) / 3.0f : ttexr.tin));
/* +v val */
tco[0] = co[0] + compat_bump->dudnv*du;
tco[1] = co[1] + compat_bump->dvdnv*du;
tco[2] = 0.f;
texco_mapping(shi, tex, mtex, tco, dx, dy, texv, dxt, dyt);
multitex_mtex(shi, mtex, texv, dxt, dyt, &ttexr, pool);
vd = idu*(cd - (fromrgb ? (ttexr.tr + ttexr.tg + ttexr.tb) / 3.0f : ttexr.tin));
}
else {
float tu[3], tv[3];
copy_v3_v3(tu, compat_bump->nu);
copy_v3_v3(tv, compat_bump->nv);
idu = (du < 1e-5f) ? bf : (bf/du);
idv = (dv < 1e-5f) ? bf : (bf/dv);
if ((mtex->texco == TEXCO_ORCO) && shi->obr && shi->obr->ob) {
mul_mat3_m4_v3(shi->obr->ob->imat_ren, tu);
mul_mat3_m4_v3(shi->obr->ob->imat_ren, tv);
normalize_v3(tu);
normalize_v3(tv);
}
else if (mtex->texco == TEXCO_GLOB) {
mul_mat3_m4_v3(R.viewinv, tu);
mul_mat3_m4_v3(R.viewinv, tv);
}
else if (mtex->texco == TEXCO_OBJECT && mtex->object) {
mul_mat3_m4_v3(mtex->object->imat_ren, tu);
mul_mat3_m4_v3(mtex->object->imat_ren, tv);
normalize_v3(tu);
normalize_v3(tv);
}
/* +u val */
tco[0] = co[0] + tu[0]*du;
tco[1] = co[1] + tu[1]*du;
tco[2] = co[2] + tu[2]*du;
texco_mapping(shi, tex, mtex, tco, dx, dy, texv, dxt, dyt);
multitex_mtex(shi, mtex, texv, dxt, dyt, &ttexr, pool);
ud = idu*(cd - (fromrgb ? (ttexr.tr + ttexr.tg + ttexr.tb) / 3.0f : ttexr.tin));
/* +v val */
tco[0] = co[0] + tv[0]*dv;
tco[1] = co[1] + tv[1]*dv;
tco[2] = co[2] + tv[2]*dv;
texco_mapping(shi, tex, mtex, tco, dx, dy, texv, dxt, dyt);
multitex_mtex(shi, mtex, texv, dxt, dyt, &ttexr, pool);
vd = idv*(cd - (fromrgb ? (ttexr.tr + ttexr.tg + ttexr.tb) / 3.0f : ttexr.tin));
}
/* bumped normal */
compat_bump->nu[0] += ud*compat_bump->nn[0];
compat_bump->nu[1] += ud*compat_bump->nn[1];
compat_bump->nu[2] += ud*compat_bump->nn[2];
compat_bump->nv[0] += vd*compat_bump->nn[0];
compat_bump->nv[1] += vd*compat_bump->nn[1];
compat_bump->nv[2] += vd*compat_bump->nn[2];
cross_v3_v3v3(nvec, compat_bump->nu, compat_bump->nv);
nvec[0] = -nvec[0];
nvec[1] = -nvec[1];
nvec[2] = -nvec[2];
texres->nor = nvec;
rgbnor |= TEX_NOR;
return rgbnor;
}
/* Improved bump code from later in 2.5 development cycle */
typedef struct NTapBump {
int init_done;
int iPrevBumpSpace; /* 0: uninitialized, 1: objectspace, 2: texturespace, 4: viewspace */
/* bumpmapping */
float vNorg[3]; /* backup copy of shi->vn */
float vNacc[3]; /* original surface normal minus the surface gradient of every bump map which is encountered */
float vR1[3], vR2[3]; /* cross products (sigma_y, original_normal), (original_normal, sigma_x) */
float sgn_det; /* sign of the determinant of the matrix {sigma_x, sigma_y, original_normal} */
float fPrevMagnitude; /* copy of previous magnitude, used for multiple bumps in different spaces */
} NTapBump;
static void ntap_bump_init(NTapBump *ntap_bump)
{
memset(ntap_bump, 0, sizeof(*ntap_bump));
}
static int ntap_bump_compute(NTapBump *ntap_bump, ShadeInput *shi, MTex *mtex, Tex *tex, TexResult *texres,
float Tnor, const float co[3], const float dx[3], const float dy[3],
float texvec[3], float dxt[3], float dyt[3], struct ImagePool *pool)
{
TexResult ttexr = {0, 0, 0, 0, 0, texres->talpha, NULL}; /* temp TexResult */
const int fromrgb = ((tex->type == TEX_IMAGE) || ((tex->flag & TEX_COLORBAND)!=0));
/* The negate on Hscale is done because the
* normal in the renderer points inward which corresponds
* to inverting the bump map. The normals are generated
* this way in calc_vertexnormals(). Should this ever change
* this negate must be removed. */
float Hscale = -Tnor*mtex->norfac;
int dimx=512, dimy=512;
const int imag_tspace_dimension_x = 1024; /* only used for texture space variant */
float aspect = 1.0f;
/* 2 channels for 2D texture and 3 for 3D textures. */
const int nr_channels = (mtex->texco == TEXCO_UV)? 2 : 3;
int c, rgbnor, iBumpSpace;
float dHdx, dHdy;
int found_deriv_map = (tex->type==TEX_IMAGE) && (tex->imaflag & TEX_DERIVATIVEMAP);
/* disable internal bump eval in sampler, save pointer */
float *nvec = texres->nor;
texres->nor = NULL;
if (found_deriv_map==0) {
if ( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) {
if (tex->ima)
Hscale *= 13.0f; /* appears to be a sensible default value */
}
else
Hscale *= 0.1f; /* factor 0.1 proved to look like the previous bump code */
}
if ( !ntap_bump->init_done ) {
copy_v3_v3(ntap_bump->vNacc, shi->vn);
copy_v3_v3(ntap_bump->vNorg, shi->vn);
ntap_bump->fPrevMagnitude = 1.0f;
ntap_bump->iPrevBumpSpace = 0;
ntap_bump->init_done = TRUE;
}
/* resolve image dimensions */
if (found_deriv_map || (mtex->texflag&MTEX_BUMP_TEXTURESPACE)!=0) {
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(tex->ima, &tex->iuser, pool);
if (ibuf) {
dimx = ibuf->x;
dimy = ibuf->y;
aspect = ((float) dimy) / dimx;
}
BKE_image_pool_release_ibuf(tex->ima, ibuf, pool);
}
if (found_deriv_map) {
float dBdu, dBdv, auto_bump = 1.0f;
float s = 1; /* negate this if flipped texture coordinate */
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
rgbnor = multitex_mtex(shi, mtex, texvec, dxt, dyt, texres, pool);
if (shi->obr->ob->derivedFinal) {
auto_bump = shi->obr->ob->derivedFinal->auto_bump_scale;
}
{
float fVirtDim = sqrtf(fabsf((float) (dimx*dimy)*mtex->size[0]*mtex->size[1]));
auto_bump /= MAX2(fVirtDim, FLT_EPSILON);
}
/* this variant using a derivative map is described here
* http://mmikkelsen3d.blogspot.com/2011/07/derivative-maps.html */
dBdu = auto_bump*Hscale*dimx*(2*texres->tr-1);
dBdv = auto_bump*Hscale*dimy*(2*texres->tg-1);
dHdx = dBdu*dxt[0] + s * dBdv*dxt[1];
dHdy = dBdu*dyt[0] + s * dBdv*dyt[1];
}
else if (!(mtex->texflag & MTEX_5TAP_BUMP)) {
/* compute height derivatives with respect to output image pixel coordinates x and y */
float STll[3], STlr[3], STul[3];
float Hll, Hlr, Hul;
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
for (c=0; c<nr_channels; c++) {
/* dx contains the derivatives (du/dx, dv/dx)
* dy contains the derivatives (du/dy, dv/dy) */
STll[c] = texvec[c];
STlr[c] = texvec[c]+dxt[c];
STul[c] = texvec[c]+dyt[c];
}
/* clear unused derivatives */
for (c=nr_channels; c<3; c++) {
STll[c] = 0.0f;
STlr[c] = 0.0f;
STul[c] = 0.0f;
}
/* use texres for the center sample, set rgbnor */
rgbnor = multitex_mtex(shi, mtex, STll, dxt, dyt, texres, pool);
Hll = (fromrgb) ? rgb_to_grayscale(&texres->tr) : texres->tin;
/* use ttexr for the other 2 taps */
multitex_mtex(shi, mtex, STlr, dxt, dyt, &ttexr, pool);
Hlr = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
multitex_mtex(shi, mtex, STul, dxt, dyt, &ttexr, pool);
Hul = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
dHdx = Hscale*(Hlr - Hll);
dHdy = Hscale*(Hul - Hll);
}
else {
/* same as above, but doing 5 taps, increasing quality at cost of speed */
float STc[3], STl[3], STr[3], STd[3], STu[3];
float /* Hc, */ /* UNUSED */ Hl, Hr, Hd, Hu;
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
for (c=0; c<nr_channels; c++) {
STc[c] = texvec[c];
STl[c] = texvec[c] - 0.5f*dxt[c];
STr[c] = texvec[c] + 0.5f*dxt[c];
STd[c] = texvec[c] - 0.5f*dyt[c];
STu[c] = texvec[c] + 0.5f*dyt[c];
}
/* clear unused derivatives */
for (c=nr_channels; c<3; c++) {
STc[c] = 0.0f;
STl[c] = 0.0f;
STr[c] = 0.0f;
STd[c] = 0.0f;
STu[c] = 0.0f;
}
/* use texres for the center sample, set rgbnor */
rgbnor = multitex_mtex(shi, mtex, STc, dxt, dyt, texres, pool);
/* Hc = (fromrgb) ? rgb_to_grayscale(&texres->tr) : texres->tin; */ /* UNUSED */
/* use ttexr for the other taps */
multitex_mtex(shi, mtex, STl, dxt, dyt, &ttexr, pool);
Hl = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
multitex_mtex(shi, mtex, STr, dxt, dyt, &ttexr, pool);
Hr = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
multitex_mtex(shi, mtex, STd, dxt, dyt, &ttexr, pool);
Hd = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
multitex_mtex(shi, mtex, STu, dxt, dyt, &ttexr, pool);
Hu = (fromrgb) ? rgb_to_grayscale(&ttexr.tr) : ttexr.tin;
dHdx = Hscale*(Hr - Hl);
dHdy = Hscale*(Hu - Hd);
}
/* restore pointer */
texres->nor = nvec;
/* replaced newbump with code based on listing 1 and 2 of
* [Mik10] Mikkelsen M. S.: Bump Mapping Unparameterized Surfaces on the GPU.
* -> http://jbit.net/~sparky/sfgrad_bump/mm_sfgrad_bump.pdf */
if ( mtex->texflag & MTEX_BUMP_OBJECTSPACE )
iBumpSpace = 1;
else if ( mtex->texflag & MTEX_BUMP_TEXTURESPACE )
iBumpSpace = 2;
else
iBumpSpace = 4; /* ViewSpace */
if ( ntap_bump->iPrevBumpSpace != iBumpSpace ) {
/* initialize normal perturbation vectors */
int xyz;
float fDet, abs_fDet, fMagnitude;
/* object2view and inverted matrix */
float obj2view[3][3], view2obj[3][3], tmp[4][4];
/* local copies of derivatives and normal */
float dPdx[3], dPdy[3], vN[3];
copy_v3_v3(dPdx, shi->dxco);
copy_v3_v3(dPdy, shi->dyco);
copy_v3_v3(vN, ntap_bump->vNorg);
if ( mtex->texflag & MTEX_BUMP_OBJECTSPACE ) {
/* TODO: these calculations happen for every pixel!
* -> move to shi->obi */
mul_m4_m4m4(tmp, R.viewmat, shi->obr->ob->obmat);
copy_m3_m4(obj2view, tmp); /* use only upper left 3x3 matrix */
invert_m3_m3(view2obj, obj2view);
/* generate the surface derivatives in object space */
mul_m3_v3(view2obj, dPdx);
mul_m3_v3(view2obj, dPdy);
/* generate the unit normal in object space */
mul_transposed_m3_v3(obj2view, vN);
normalize_v3(vN);
}
cross_v3_v3v3(ntap_bump->vR1, dPdy, vN);
cross_v3_v3v3(ntap_bump->vR2, vN, dPdx);
fDet = dot_v3v3(dPdx, ntap_bump->vR1);
ntap_bump->sgn_det = (fDet < 0)? -1.0f: 1.0f;
abs_fDet = ntap_bump->sgn_det * fDet;
if ( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) {
if (tex->ima) {
/* crazy hack solution that gives results similar to normal mapping - part 1 */
normalize_v3(ntap_bump->vR1);
normalize_v3(ntap_bump->vR2);
abs_fDet = 1.0f;
}
}
fMagnitude = abs_fDet;
if ( mtex->texflag & MTEX_BUMP_OBJECTSPACE ) {
/* pre do transform of texres->nor by the inverse transposed of obj2view */
mul_transposed_m3_v3(view2obj, vN);
mul_transposed_m3_v3(view2obj, ntap_bump->vR1);
mul_transposed_m3_v3(view2obj, ntap_bump->vR2);
fMagnitude *= len_v3(vN);
}
if (ntap_bump->fPrevMagnitude > 0.0f)
for (xyz=0; xyz<3; xyz++)
ntap_bump->vNacc[xyz] *= fMagnitude / ntap_bump->fPrevMagnitude;
ntap_bump->fPrevMagnitude = fMagnitude;
ntap_bump->iPrevBumpSpace = iBumpSpace;
}
if ( mtex->texflag & MTEX_BUMP_TEXTURESPACE ) {
if (tex->ima) {
/* crazy hack solution that gives results similar to normal mapping - part 2 */
float vec[2];
const float imag_tspace_dimension_y = aspect*imag_tspace_dimension_x;
vec[0] = imag_tspace_dimension_x*dxt[0];
vec[1] = imag_tspace_dimension_y*dxt[1];
dHdx *= 1.0f/len_v2(vec);
vec[0] = imag_tspace_dimension_x*dyt[0];
vec[1] = imag_tspace_dimension_y*dyt[1];
dHdy *= 1.0f/len_v2(vec);
}
}
/* subtract the surface gradient from vNacc */
for (c=0; c<3; c++) {
float vSurfGrad_compi = ntap_bump->sgn_det * (dHdx * ntap_bump->vR1[c] + dHdy * ntap_bump->vR2[c]);
ntap_bump->vNacc[c] -= vSurfGrad_compi;
texres->nor[c] = ntap_bump->vNacc[c]; /* copy */
}
rgbnor |= TEX_NOR;
return rgbnor;
}
void do_material_tex(ShadeInput *shi, Render *re)
{
CompatibleBump compat_bump;
NTapBump ntap_bump;
MTex *mtex;
Tex *tex;
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float *co = NULL, *dx = NULL, *dy = NULL;
float fact, facm, factt, facmm, stencilTin=1.0;
float texvec[3], dxt[3], dyt[3], tempvec[3], norvec[3], warpvec[3]={0.0f, 0.0f, 0.0f}, Tnor=1.0;
int tex_nr, rgbnor= 0, warp_done = FALSE;
int use_compat_bump = FALSE, use_ntap_bump = FALSE;
int found_nmapping = 0, found_deriv_map = 0;
int iFirstTimeNMap=1;
compatible_bump_init(&compat_bump);
ntap_bump_init(&ntap_bump);
if (re->r.scemode & R_NO_TEX) return;
/* here: test flag if there's a tex (todo) */
for (tex_nr=0; tex_nr<MAX_MTEX; tex_nr++) {
/* separate tex switching */
if (shi->mat->septex & (1<<tex_nr)) continue;
if (shi->mat->mtex[tex_nr]) {
mtex= shi->mat->mtex[tex_nr];
tex= mtex->tex;
if (tex == NULL) continue;
found_deriv_map = (tex->type==TEX_IMAGE) && (tex->imaflag & TEX_DERIVATIVEMAP);
use_compat_bump= (mtex->texflag & MTEX_COMPAT_BUMP);
use_ntap_bump = ((mtex->texflag & (MTEX_3TAP_BUMP|MTEX_5TAP_BUMP|MTEX_BICUBIC_BUMP))!=0 || found_deriv_map!=0) ? TRUE : FALSE;
/* XXX texture node trees don't work for this yet */
if (tex->nodetree && tex->use_nodes) {
use_compat_bump = FALSE;
use_ntap_bump = FALSE;
}
/* case displacement mapping */
if (shi->osatex == 0 && use_ntap_bump) {
use_ntap_bump = FALSE;
use_compat_bump = TRUE;
}
/* case ocean */
if (tex->type == TEX_OCEAN) {
use_ntap_bump = FALSE;
use_compat_bump = FALSE;
}
/* which coords */
if (mtex->texco==TEXCO_ORCO) {
if (mtex->texflag & MTEX_DUPLI_MAPTO) {
co= shi->duplilo; dx= dxt; dy= dyt;
dxt[0]= dxt[1]= dxt[2]= 0.0f;
dyt[0]= dyt[1]= dyt[2]= 0.0f;
}
else {
co= shi->lo; dx= shi->dxlo; dy= shi->dylo;
}
}
else if (mtex->texco==TEXCO_OBJECT) {
Object *ob= mtex->object;
if (ob) {
co= tempvec;
dx= dxt;
dy= dyt;
copy_v3_v3(tempvec, shi->co);
if (mtex->texflag & MTEX_OB_DUPLI_ORIG)
if (shi->obi && shi->obi->duplitexmat)
mul_m4_v3(shi->obi->duplitexmat, tempvec);
mul_m4_v3(ob->imat_ren, tempvec);
if (shi->osatex) {
copy_v3_v3(dxt, shi->dxco);
copy_v3_v3(dyt, shi->dyco);
mul_mat3_m4_v3(ob->imat_ren, dxt);
mul_mat3_m4_v3(ob->imat_ren, dyt);
}
}
else {
/* if object doesn't exist, do not use orcos (not initialized) */
co= shi->co;
dx= shi->dxco; dy= shi->dyco;
}
}
else if (mtex->texco==TEXCO_REFL) {
calc_R_ref(shi);
co= shi->ref; dx= shi->dxref; dy= shi->dyref;
}
else if (mtex->texco==TEXCO_NORM) {
co= shi->orn; dx= shi->dxno; dy= shi->dyno;
}
else if (mtex->texco==TEXCO_TANGENT) {
co= shi->tang; dx= shi->dxno; dy= shi->dyno;
}
else if (mtex->texco==TEXCO_GLOB) {
co= shi->gl; dx= shi->dxgl; dy= shi->dygl;
}
else if (mtex->texco==TEXCO_UV) {
if (mtex->texflag & MTEX_DUPLI_MAPTO) {
co= shi->dupliuv; dx= dxt; dy= dyt;
dxt[0]= dxt[1]= dxt[2]= 0.0f;
dyt[0]= dyt[1]= dyt[2]= 0.0f;
}
else {
ShadeInputUV *suv= &shi->uv[shi->actuv];
int i = shi->actuv;
if (mtex->uvname[0] != 0) {
for (i = 0; i < shi->totuv; i++) {
if (strcmp(shi->uv[i].name, mtex->uvname)==0) {
suv= &shi->uv[i];
break;
}
}
}
co= suv->uv;
dx= suv->dxuv;
dy= suv->dyuv;
compatible_bump_uv_derivs(&compat_bump, shi, mtex, i);
}
}
else if (mtex->texco==TEXCO_WINDOW) {
co= shi->winco; dx= shi->dxwin; dy= shi->dywin;
}
else if (mtex->texco==TEXCO_STRAND) {
co= tempvec; dx= dxt; dy= dyt;
co[0]= shi->strandco;
co[1]= co[2]= 0.0f;
dx[0]= shi->dxstrand;
dx[1]= dx[2]= 0.0f;
dy[0]= shi->dystrand;
dy[1]= dy[2]= 0.0f;
}
else if (mtex->texco==TEXCO_STRESS) {
co= tempvec; dx= dxt; dy= dyt;
co[0]= shi->stress;
co[1]= co[2]= 0.0f;
dx[0]= 0.0f;
dx[1]= dx[2]= 0.0f;
dy[0]= 0.0f;
dy[1]= dy[2]= 0.0f;
}
else {
continue; /* can happen when texco defines disappear and it renders old files */
}
/* the pointer defines if bumping happens */
if (mtex->mapto & (MAP_NORM|MAP_WARP)) {
texres.nor= norvec;
norvec[0]= norvec[1]= norvec[2]= 0.0;
}
else texres.nor= NULL;
if (warp_done) {
add_v3_v3v3(tempvec, co, warpvec);
co= tempvec;
}
/* XXX texture node trees don't work for this yet */
if (texres.nor && !((tex->type==TEX_IMAGE) && (tex->imaflag & TEX_NORMALMAP))) {
if (use_compat_bump) {
rgbnor = compatible_bump_compute(&compat_bump, shi, mtex, tex,
&texres, Tnor*stencilTin, co, dx, dy, texvec, dxt, dyt,
re->pool);
}
else if (use_ntap_bump) {
rgbnor = ntap_bump_compute(&ntap_bump, shi, mtex, tex,
&texres, Tnor*stencilTin, co, dx, dy, texvec, dxt, dyt,
re->pool);
}
else {
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
rgbnor = multitex_mtex(shi, mtex, texvec, dxt, dyt, &texres, re->pool);
}
}
else {
texco_mapping(shi, tex, mtex, co, dx, dy, texvec, dxt, dyt);
rgbnor = multitex_mtex(shi, mtex, texvec, dxt, dyt, &texres, re->pool);
}
/* texture output */
if ( (rgbnor & TEX_RGB) && (mtex->texflag & MTEX_RGBTOINT)) {
texres.tin = rgb_to_grayscale(&texres.tr);
rgbnor -= TEX_RGB;
}
if (mtex->texflag & MTEX_NEGATIVE) {
if (rgbnor & TEX_RGB) {
texres.tr= 1.0f-texres.tr;
texres.tg= 1.0f-texres.tg;
texres.tb= 1.0f-texres.tb;
}
texres.tin= 1.0f-texres.tin;
}
if (mtex->texflag & MTEX_STENCIL) {
if (rgbnor & TEX_RGB) {
fact= texres.ta;
texres.ta*= stencilTin;
stencilTin*= fact;
}
else {
fact= texres.tin;
texres.tin*= stencilTin;
stencilTin*= fact;
}
}
else {
Tnor*= stencilTin;
}
if (texres.nor) {
if ((rgbnor & TEX_NOR)==0) {
/* make our own normal */
if (rgbnor & TEX_RGB) {
copy_v3_v3(texres.nor, &texres.tr);
}
else {
float co_nor= 0.5*cos(texres.tin-0.5f);
float si= 0.5*sin(texres.tin-0.5f);
float f1, f2;
f1= shi->vn[0];
f2= shi->vn[1];
texres.nor[0]= f1*co_nor+f2*si;
f1= shi->vn[1];
f2= shi->vn[2];
texres.nor[1]= f1*co_nor+f2*si;
texres.nor[2]= f2*co_nor-f1*si;
}
}
/* warping, local space */
if (mtex->mapto & MAP_WARP) {
float *warpnor= texres.nor, warpnor_[3];
if (use_ntap_bump) {
copy_v3_v3(warpnor_, texres.nor);
warpnor= warpnor_;
normalize_v3(warpnor_);
}
warpvec[0]= mtex->warpfac*warpnor[0];
warpvec[1]= mtex->warpfac*warpnor[1];
warpvec[2]= mtex->warpfac*warpnor[2];
warp_done = TRUE;
}
#if 0
if (mtex->texflag & MTEX_VIEWSPACE) {
/* rotate to global coords */
if (mtex->texco==TEXCO_ORCO || mtex->texco==TEXCO_UV) {
if (shi->vlr && shi->obr && shi->obr->ob) {
float len= normalize_v3(texres.nor);
/* can be optimized... (ton) */
mul_mat3_m4_v3(shi->obr->ob->obmat, texres.nor);
mul_mat3_m4_v3(re->viewmat, texres.nor);
normalize_v3(texres.nor);
mul_v3_fl(texres.nor, len);
}
}
}
#endif
}
/* mapping */
if (mtex->mapto & (MAP_COL | MAP_COLSPEC | MAP_COLMIR)) {
float tcol[3];
/* stencil maps on the texture control slider, not texture intensity value */
copy_v3_v3(tcol, &texres.tr);
if ((rgbnor & TEX_RGB) == 0) {
copy_v3_v3(tcol, &mtex->r);
}
else if (mtex->mapto & MAP_ALPHA) {
texres.tin = stencilTin;
}
else {
texres.tin = texres.ta;
}
/* inverse gamma correction */
if (tex->type==TEX_IMAGE) {
Image *ima = tex->ima;
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(ima, &tex->iuser, re->pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && R.scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(tcol, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(ima, ibuf, re->pool);
}
if (mtex->mapto & MAP_COL) {
float colfac= mtex->colfac*stencilTin;
texture_rgb_blend(&shi->r, tcol, &shi->r, texres.tin, colfac, mtex->blendtype);
}
if (mtex->mapto & MAP_COLSPEC) {
float colspecfac= mtex->colspecfac*stencilTin;
texture_rgb_blend(&shi->specr, tcol, &shi->specr, texres.tin, colspecfac, mtex->blendtype);
}
if (mtex->mapto & MAP_COLMIR) {
float mirrfac= mtex->mirrfac*stencilTin;
/* exception for envmap only */
if (tex->type==TEX_ENVMAP && mtex->blendtype==MTEX_BLEND) {
fact= texres.tin*mirrfac;
facm= 1.0f- fact;
shi->refcol[0]= fact + facm*shi->refcol[0];
shi->refcol[1]= fact*tcol[0] + facm*shi->refcol[1];
shi->refcol[2]= fact*tcol[1] + facm*shi->refcol[2];
shi->refcol[3]= fact*tcol[2] + facm*shi->refcol[3];
}
else {
texture_rgb_blend(&shi->mirr, tcol, &shi->mirr, texres.tin, mirrfac, mtex->blendtype);
}
}
}
if ( (mtex->mapto & MAP_NORM) ) {
if (texres.nor) {
float norfac= mtex->norfac;
/* we need to code blending modes for normals too once.. now 1 exception hardcoded */
if ((tex->type==TEX_IMAGE) && (tex->imaflag & TEX_NORMALMAP)) {
found_nmapping = 1;
/* qdn: for normalmaps, to invert the normalmap vector,
* it is better to negate x & y instead of subtracting the vector as was done before */
if (norfac < 0.0f) {
texres.nor[0] = -texres.nor[0];
texres.nor[1] = -texres.nor[1];
}
fact = Tnor*fabsf(norfac);
if (fact>1.f) fact = 1.f;
facm = 1.f-fact;
if (mtex->normapspace == MTEX_NSPACE_TANGENT) {
/* qdn: tangent space */
float B[3], tv[3];
const float * no = iFirstTimeNMap!=0 ? shi->nmapnorm : shi->vn;
iFirstTimeNMap=0;
cross_v3_v3v3(B, no, shi->nmaptang); /* bitangent */
mul_v3_fl(B, shi->nmaptang[3]);
/* transform norvec from tangent space to object surface in camera space */
tv[0] = texres.nor[0]*shi->nmaptang[0] + texres.nor[1]*B[0] + texres.nor[2]*no[0];
tv[1] = texres.nor[0]*shi->nmaptang[1] + texres.nor[1]*B[1] + texres.nor[2]*no[1];
tv[2] = texres.nor[0]*shi->nmaptang[2] + texres.nor[1]*B[2] + texres.nor[2]*no[2];
shi->vn[0]= facm*no[0] + fact*tv[0];
shi->vn[1]= facm*no[1] + fact*tv[1];
shi->vn[2]= facm*no[2] + fact*tv[2];
}
else {
float nor[3];
copy_v3_v3(nor, texres.nor);
if (mtex->normapspace == MTEX_NSPACE_CAMERA) {
/* pass */
}
else if (mtex->normapspace == MTEX_NSPACE_WORLD) {
mul_mat3_m4_v3(re->viewmat, nor);
}
else if (mtex->normapspace == MTEX_NSPACE_OBJECT) {
if (shi->obr && shi->obr->ob)
mul_mat3_m4_v3(shi->obr->ob->obmat, nor);
mul_mat3_m4_v3(re->viewmat, nor);
}
normalize_v3(nor);
/* qdn: worldspace */
shi->vn[0]= facm*shi->vn[0] + fact*nor[0];
shi->vn[1]= facm*shi->vn[1] + fact*nor[1];
shi->vn[2]= facm*shi->vn[2] + fact*nor[2];
}
}
else {
/* XXX texture node trees don't work for this yet */
if (use_compat_bump || use_ntap_bump) {
shi->vn[0] = texres.nor[0];
shi->vn[1] = texres.nor[1];
shi->vn[2] = texres.nor[2];
}
else {
float nor[3], dot;
if (shi->mat->mode & MA_TANGENT_V) {
shi->tang[0]+= Tnor*norfac*texres.nor[0];
shi->tang[1]+= Tnor*norfac*texres.nor[1];
shi->tang[2]+= Tnor*norfac*texres.nor[2];
}
/* prevent bump to become negative normal */
nor[0]= Tnor*norfac*texres.nor[0];
nor[1]= Tnor*norfac*texres.nor[1];
nor[2]= Tnor*norfac*texres.nor[2];
dot= 0.5f + 0.5f * dot_v3v3(nor, shi->vn);
shi->vn[0]+= dot*nor[0];
shi->vn[1]+= dot*nor[1];
shi->vn[2]+= dot*nor[2];
}
}
normalize_v3(shi->vn);
/* this makes sure the bump is passed on to the next texture */
shi->orn[0]= -shi->vn[0];
shi->orn[1]= -shi->vn[1];
shi->orn[2]= -shi->vn[2];
}
}
if ( mtex->mapto & MAP_DISPLACE ) {
/* Now that most textures offer both Nor and Intensity, allow */
/* both to work, and let user select with slider. */
if (texres.nor) {
float norfac= mtex->norfac;
shi->displace[0]+= 0.2f*Tnor*norfac*texres.nor[0];
shi->displace[1]+= 0.2f*Tnor*norfac*texres.nor[1];
shi->displace[2]+= 0.2f*Tnor*norfac*texres.nor[2];
}
if (rgbnor & TEX_RGB) {
texres.tin = rgb_to_grayscale(&texres.tr);
}
factt= (0.5f-texres.tin)*mtex->dispfac*stencilTin; facmm= 1.0f-factt;
if (mtex->blendtype==MTEX_BLEND) {
shi->displace[0]= factt*shi->vn[0] + facmm*shi->displace[0];
shi->displace[1]= factt*shi->vn[1] + facmm*shi->displace[1];
shi->displace[2]= factt*shi->vn[2] + facmm*shi->displace[2];
}
else if (mtex->blendtype==MTEX_MUL) {
shi->displace[0]*= factt*shi->vn[0];
shi->displace[1]*= factt*shi->vn[1];
shi->displace[2]*= factt*shi->vn[2];
}
else { /* add or sub */
if (mtex->blendtype==MTEX_SUB) factt= -factt;
shi->displace[0]+= factt*shi->vn[0];
shi->displace[1]+= factt*shi->vn[1];
shi->displace[2]+= factt*shi->vn[2];
}
}
if (mtex->mapto & MAP_VARS) {
/* stencil maps on the texture control slider, not texture intensity value */
if (rgbnor & TEX_RGB) {
if (texres.talpha) texres.tin = texres.ta;
else texres.tin = rgb_to_grayscale(&texres.tr);
}
if (mtex->mapto & MAP_REF) {
float difffac= mtex->difffac*stencilTin;
shi->refl= texture_value_blend(mtex->def_var, shi->refl, texres.tin, difffac, mtex->blendtype);
if (shi->refl<0.0f) shi->refl= 0.0f;
}
if (mtex->mapto & MAP_SPEC) {
float specfac= mtex->specfac*stencilTin;
shi->spec= texture_value_blend(mtex->def_var, shi->spec, texres.tin, specfac, mtex->blendtype);
if (shi->spec<0.0f) shi->spec= 0.0f;
}
if (mtex->mapto & MAP_EMIT) {
float emitfac= mtex->emitfac*stencilTin;
shi->emit= texture_value_blend(mtex->def_var, shi->emit, texres.tin, emitfac, mtex->blendtype);
if (shi->emit<0.0f) shi->emit= 0.0f;
}
if (mtex->mapto & MAP_ALPHA) {
float alphafac= mtex->alphafac*stencilTin;
shi->alpha= texture_value_blend(mtex->def_var, shi->alpha, texres.tin, alphafac, mtex->blendtype);
if (shi->alpha<0.0f) shi->alpha= 0.0f;
else if (shi->alpha>1.0f) shi->alpha= 1.0f;
}
if (mtex->mapto & MAP_HAR) {
float har; /* have to map to 0-1 */
float hardfac= mtex->hardfac*stencilTin;
har= ((float)shi->har)/128.0f;
har= 128.0f*texture_value_blend(mtex->def_var, har, texres.tin, hardfac, mtex->blendtype);
if (har<1.0f) shi->har= 1;
else if (har>511) shi->har= 511;
else shi->har= (int)har;
}
if (mtex->mapto & MAP_RAYMIRR) {
float raymirrfac= mtex->raymirrfac*stencilTin;
shi->ray_mirror= texture_value_blend(mtex->def_var, shi->ray_mirror, texres.tin, raymirrfac, mtex->blendtype);
if (shi->ray_mirror<0.0f) shi->ray_mirror= 0.0f;
else if (shi->ray_mirror>1.0f) shi->ray_mirror= 1.0f;
}
if (mtex->mapto & MAP_TRANSLU) {
float translfac= mtex->translfac*stencilTin;
shi->translucency= texture_value_blend(mtex->def_var, shi->translucency, texres.tin, translfac, mtex->blendtype);
if (shi->translucency<0.0f) shi->translucency= 0.0f;
else if (shi->translucency>1.0f) shi->translucency= 1.0f;
}
if (mtex->mapto & MAP_AMB) {
float ambfac= mtex->ambfac*stencilTin;
shi->amb= texture_value_blend(mtex->def_var, shi->amb, texres.tin, ambfac, mtex->blendtype);
if (shi->amb<0.0f) shi->amb= 0.0f;
else if (shi->amb>1.0f) shi->amb= 1.0f;
shi->ambr= shi->amb*re->wrld.ambr;
shi->ambg= shi->amb*re->wrld.ambg;
shi->ambb= shi->amb*re->wrld.ambb;
}
}
}
}
if ((use_compat_bump || use_ntap_bump || found_nmapping) && (shi->mat->mode & MA_TANGENT_V) != 0) {
const float fnegdot = -dot_v3v3(shi->vn, shi->tang);
/* apply Gram-Schmidt projection */
madd_v3_v3fl(shi->tang, shi->vn, fnegdot);
normalize_v3(shi->tang);
}
}
void do_volume_tex(ShadeInput *shi, const float *xyz, int mapto_flag, float col_r[3], float *val, Render *re)
{
MTex *mtex;
Tex *tex;
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
int tex_nr, rgbnor= 0;
float co[3], texvec[3];
float fact, stencilTin=1.0;
if (re->r.scemode & R_NO_TEX) return;
/* here: test flag if there's a tex (todo) */
for (tex_nr=0; tex_nr<MAX_MTEX; tex_nr++) {
/* separate tex switching */
if (shi->mat->septex & (1<<tex_nr)) continue;
if (shi->mat->mtex[tex_nr]) {
mtex= shi->mat->mtex[tex_nr];
tex= mtex->tex;
if (tex == NULL) continue;
/* only process if this texture is mapped
* to one that we're interested in */
if (!(mtex->mapto & mapto_flag)) continue;
/* which coords */
if (mtex->texco==TEXCO_OBJECT) {
Object *ob= mtex->object;
if (ob) {
copy_v3_v3(co, xyz);
if (mtex->texflag & MTEX_OB_DUPLI_ORIG) {
if (shi->obi && shi->obi->duplitexmat)
mul_m4_v3(shi->obi->duplitexmat, co);
}
mul_m4_v3(ob->imat_ren, co);
if (mtex->texflag & MTEX_MAPTO_BOUNDS && ob->bb) {
/* use bb vec[0] as min and bb vec[6] as max */
co[0] = (co[0] - ob->bb->vec[0][0]) / (ob->bb->vec[6][0]-ob->bb->vec[0][0]) * 2.0f - 1.0f;
co[1] = (co[1] - ob->bb->vec[0][1]) / (ob->bb->vec[6][1]-ob->bb->vec[0][1]) * 2.0f - 1.0f;
co[2] = (co[2] - ob->bb->vec[0][2]) / (ob->bb->vec[6][2]-ob->bb->vec[0][2]) * 2.0f - 1.0f;
}
}
}
/* not really orco, but 'local' */
else if (mtex->texco==TEXCO_ORCO) {
if (mtex->texflag & MTEX_DUPLI_MAPTO) {
copy_v3_v3(co, shi->duplilo);
}
else {
Object *ob= shi->obi->ob;
copy_v3_v3(co, xyz);
mul_m4_v3(ob->imat_ren, co);
if (mtex->texflag & MTEX_MAPTO_BOUNDS && ob->bb) {
/* use bb vec[0] as min and bb vec[6] as max */
co[0] = (co[0] - ob->bb->vec[0][0]) / (ob->bb->vec[6][0]-ob->bb->vec[0][0]) * 2.0f - 1.0f;
co[1] = (co[1] - ob->bb->vec[0][1]) / (ob->bb->vec[6][1]-ob->bb->vec[0][1]) * 2.0f - 1.0f;
co[2] = (co[2] - ob->bb->vec[0][2]) / (ob->bb->vec[6][2]-ob->bb->vec[0][2]) * 2.0f - 1.0f;
}
}
}
else if (mtex->texco==TEXCO_GLOB) {
copy_v3_v3(co, xyz);
mul_m4_v3(re->viewinv, co);
}
else {
continue; /* can happen when texco defines disappear and it renders old files */
}
texres.nor= NULL;
if (tex->type == TEX_IMAGE) {
continue; /* not supported yet */
//do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
}
else {
/* placement */
if (mtex->projx) texvec[0]= mtex->size[0]*(co[mtex->projx-1]+mtex->ofs[0]);
else texvec[0]= mtex->size[0]*(mtex->ofs[0]);
if (mtex->projy) texvec[1]= mtex->size[1]*(co[mtex->projy-1]+mtex->ofs[1]);
else texvec[1]= mtex->size[1]*(mtex->ofs[1]);
if (mtex->projz) texvec[2]= mtex->size[2]*(co[mtex->projz-1]+mtex->ofs[2]);
else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
}
rgbnor = multitex(tex, texvec, NULL, NULL, 0, &texres, 0, mtex->which_output, re->pool); /* NULL = dxt/dyt, 0 = shi->osatex - not supported */
/* texture output */
if ( (rgbnor & TEX_RGB) && (mtex->texflag & MTEX_RGBTOINT)) {
texres.tin = rgb_to_grayscale(&texres.tr);
rgbnor -= TEX_RGB;
}
if (mtex->texflag & MTEX_NEGATIVE) {
if (rgbnor & TEX_RGB) {
texres.tr= 1.0f-texres.tr;
texres.tg= 1.0f-texres.tg;
texres.tb= 1.0f-texres.tb;
}
texres.tin= 1.0f-texres.tin;
}
if (mtex->texflag & MTEX_STENCIL) {
if (rgbnor & TEX_RGB) {
fact= texres.ta;
texres.ta*= stencilTin;
stencilTin*= fact;
}
else {
fact= texres.tin;
texres.tin*= stencilTin;
stencilTin*= fact;
}
}
if ((mapto_flag & (MAP_EMISSION_COL+MAP_TRANSMISSION_COL+MAP_REFLECTION_COL)) && (mtex->mapto & (MAP_EMISSION_COL+MAP_TRANSMISSION_COL+MAP_REFLECTION_COL))) {
float tcol[3];
/* stencil maps on the texture control slider, not texture intensity value */
if ((rgbnor & TEX_RGB) == 0) {
copy_v3_v3(tcol, &mtex->r);
}
else if (mtex->mapto & MAP_DENSITY) {
copy_v3_v3(tcol, &texres.tr);
if (texres.talpha) {
texres.tin = stencilTin;
}
}
else {
copy_v3_v3(tcol, &texres.tr);
if (texres.talpha) {
texres.tin= texres.ta;
}
}
/* used for emit */
if ((mapto_flag & MAP_EMISSION_COL) && (mtex->mapto & MAP_EMISSION_COL)) {
float colemitfac= mtex->colemitfac*stencilTin;
texture_rgb_blend(col_r, tcol, col_r, texres.tin, colemitfac, mtex->blendtype);
}
if ((mapto_flag & MAP_REFLECTION_COL) && (mtex->mapto & MAP_REFLECTION_COL)) {
float colreflfac= mtex->colreflfac*stencilTin;
texture_rgb_blend(col_r, tcol, col_r, texres.tin, colreflfac, mtex->blendtype);
}
if ((mapto_flag & MAP_TRANSMISSION_COL) && (mtex->mapto & MAP_TRANSMISSION_COL)) {
float coltransfac= mtex->coltransfac*stencilTin;
texture_rgb_blend(col_r, tcol, col_r, texres.tin, coltransfac, mtex->blendtype);
}
}
if ((mapto_flag & MAP_VARS) && (mtex->mapto & MAP_VARS)) {
/* stencil maps on the texture control slider, not texture intensity value */
/* convert RGB to intensity if intensity info isn't provided */
if (rgbnor & TEX_RGB) {
if (texres.talpha) texres.tin = texres.ta;
else texres.tin = rgb_to_grayscale(&texres.tr);
}
if ((mapto_flag & MAP_EMISSION) && (mtex->mapto & MAP_EMISSION)) {
float emitfac= mtex->emitfac*stencilTin;
*val = texture_value_blend(mtex->def_var, *val, texres.tin, emitfac, mtex->blendtype);
if (*val<0.0f) *val= 0.0f;
}
if ((mapto_flag & MAP_DENSITY) && (mtex->mapto & MAP_DENSITY)) {
float densfac= mtex->densfac*stencilTin;
*val = texture_value_blend(mtex->def_var, *val, texres.tin, densfac, mtex->blendtype);
CLAMP(*val, 0.0f, 1.0f);
}
if ((mapto_flag & MAP_SCATTERING) && (mtex->mapto & MAP_SCATTERING)) {
float scatterfac= mtex->scatterfac*stencilTin;
*val = texture_value_blend(mtex->def_var, *val, texres.tin, scatterfac, mtex->blendtype);
CLAMP(*val, 0.0f, 1.0f);
}
if ((mapto_flag & MAP_REFLECTION) && (mtex->mapto & MAP_REFLECTION)) {
float reflfac= mtex->reflfac*stencilTin;
*val = texture_value_blend(mtex->def_var, *val, texres.tin, reflfac, mtex->blendtype);
CLAMP(*val, 0.0f, 1.0f);
}
}
}
}
}
/* ------------------------------------------------------------------------- */
void do_halo_tex(HaloRen *har, float xn, float yn, float col_r[4])
{
MTex *mtex;
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float texvec[3], dxt[3], dyt[3], fact, facm, dx;
int rgb, osatex;
if (R.r.scemode & R_NO_TEX) return;
mtex= har->mat->mtex[0];
if (har->mat->septex & (1<<0)) return;
if (mtex->tex==NULL) return;
/* no normal mapping */
texres.nor= NULL;
texvec[0]= xn/har->rad;
texvec[1]= yn/har->rad;
texvec[2]= 0.0;
osatex= (har->mat->texco & TEXCO_OSA);
/* placement */
if (mtex->projx) texvec[0]= mtex->size[0]*(texvec[mtex->projx-1]+mtex->ofs[0]);
else texvec[0]= mtex->size[0]*(mtex->ofs[0]);
if (mtex->projy) texvec[1]= mtex->size[1]*(texvec[mtex->projy-1]+mtex->ofs[1]);
else texvec[1]= mtex->size[1]*(mtex->ofs[1]);
if (mtex->projz) texvec[2]= mtex->size[2]*(texvec[mtex->projz-1]+mtex->ofs[2]);
else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
if (osatex) {
dx= 1.0f/har->rad;
if (mtex->projx) {
dxt[0]= mtex->size[0]*dx;
dyt[0]= mtex->size[0]*dx;
}
else dxt[0]= dyt[0]= 0.0;
if (mtex->projy) {
dxt[1]= mtex->size[1]*dx;
dyt[1]= mtex->size[1]*dx;
}
else dxt[1]= dyt[1]= 0.0;
if (mtex->projz) {
dxt[2]= 0.0;
dyt[2]= 0.0;
}
else dxt[2]= dyt[2]= 0.0;
}
if (mtex->tex->type==TEX_IMAGE) do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
rgb = multitex(mtex->tex, texvec, dxt, dyt, osatex, &texres, 0, mtex->which_output, har->pool);
/* texture output */
if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
texres.tin = rgb_to_bw(&texres.tr);
rgb= 0;
}
if (mtex->texflag & MTEX_NEGATIVE) {
if (rgb) {
texres.tr= 1.0f-texres.tr;
texres.tg= 1.0f-texres.tg;
texres.tb= 1.0f-texres.tb;
}
else texres.tin= 1.0f-texres.tin;
}
/* mapping */
if (mtex->mapto & MAP_COL) {
if (rgb==0) {
texres.tr= mtex->r;
texres.tg= mtex->g;
texres.tb= mtex->b;
}
else if (mtex->mapto & MAP_ALPHA) {
texres.tin= 1.0;
}
else texres.tin= texres.ta;
/* inverse gamma correction */
if (mtex->tex->type==TEX_IMAGE) {
Image *ima = mtex->tex->ima;
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(ima, &mtex->tex->iuser, har->pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && R.scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(&texres.tr, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(ima, ibuf, har->pool);
}
fact= texres.tin*mtex->colfac;
facm= 1.0f-fact;
if (mtex->blendtype==MTEX_MUL) {
facm= 1.0f-mtex->colfac;
}
if (mtex->blendtype==MTEX_SUB) fact= -fact;
if (mtex->blendtype==MTEX_BLEND) {
col_r[0]= (fact*texres.tr + facm*har->r);
col_r[1]= (fact*texres.tg + facm*har->g);
col_r[2]= (fact*texres.tb + facm*har->b);
}
else if (mtex->blendtype==MTEX_MUL) {
col_r[0]= (facm+fact*texres.tr)*har->r;
col_r[1]= (facm+fact*texres.tg)*har->g;
col_r[2]= (facm+fact*texres.tb)*har->b;
}
else {
col_r[0]= (fact*texres.tr + har->r);
col_r[1]= (fact*texres.tg + har->g);
col_r[2]= (fact*texres.tb + har->b);
CLAMP(col_r[0], 0.0f, 1.0f);
CLAMP(col_r[1], 0.0f, 1.0f);
CLAMP(col_r[2], 0.0f, 1.0f);
}
}
if (mtex->mapto & MAP_ALPHA) {
if (rgb) {
if (texres.talpha) {
texres.tin = texres.ta;
}
else {
texres.tin = rgb_to_bw(&texres.tr);
}
}
col_r[3]*= texres.tin;
}
}
/* ------------------------------------------------------------------------- */
/* hor and zen are RGB vectors, blend is 1 float, should all be initialized */
void do_sky_tex(const float rco[3], float lo[3], const float dxyview[2], float hor[3], float zen[3], float *blend, int skyflag, short thread)
{
MTex *mtex;
Tex *tex;
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float *co, fact, stencilTin=1.0;
float tempvec[3], texvec[3], dxt[3], dyt[3];
int tex_nr, rgb= 0;
if (R.r.scemode & R_NO_TEX) return;
/* todo: add flag to test if there's a tex */
texres.nor= NULL;
for (tex_nr=0; tex_nr<MAX_MTEX; tex_nr++) {
if (R.wrld.mtex[tex_nr]) {
mtex= R.wrld.mtex[tex_nr];
tex= mtex->tex;
if (tex == NULL) continue;
/* if (mtex->mapto==0) continue; */
/* which coords */
co= lo;
/* dxt dyt just from 1 value */
if (dxyview) {
dxt[0]= dxt[1]= dxt[2]= dxyview[0];
dyt[0]= dyt[1]= dyt[2]= dxyview[1];
}
else {
dxt[0]= dxt[1]= dxt[2]= 0.0;
dyt[0]= dyt[1]= dyt[2]= 0.0;
}
/* Grab the mapping settings for this texture */
switch (mtex->texco) {
case TEXCO_ANGMAP:
/* only works with texture being "real" */
/* use saacos(), fixes bug [#22398], float precision caused lo[2] to be slightly less then -1.0 */
if (lo[0] || lo[1]) { /* check for zero case [#24807] */
fact= (1.0f/(float)M_PI)*saacos(lo[2])/(sqrtf(lo[0]*lo[0] + lo[1]*lo[1]));
tempvec[0]= lo[0]*fact;
tempvec[1]= lo[1]*fact;
tempvec[2]= 0.0;
}
else {
/* this value has no angle, the vector is directly along the view.
* avoid divide by zero and use a dummy value. */
tempvec[0]= 1.0f;
tempvec[1]= 0.0;
tempvec[2]= 0.0;
}
co= tempvec;
break;
case TEXCO_H_SPHEREMAP:
case TEXCO_H_TUBEMAP:
if (skyflag & WO_ZENUP) {
if (mtex->texco==TEXCO_H_TUBEMAP) map_to_tube( tempvec, tempvec+1, lo[0], lo[2], lo[1]);
else map_to_sphere(tempvec, tempvec+1, lo[0], lo[2], lo[1]);
/* tube/spheremap maps for outside view, not inside */
tempvec[0]= 1.0f-tempvec[0];
/* only top half */
tempvec[1]= 2.0f*tempvec[1]-1.0f;
tempvec[2]= 0.0;
/* and correction for do_2d_mapping */
tempvec[0]= 2.0f*tempvec[0]-1.0f;
tempvec[1]= 2.0f*tempvec[1]-1.0f;
co= tempvec;
}
else {
/* potentially dangerous... check with multitex! */
continue;
}
break;
case TEXCO_EQUIRECTMAP:
tempvec[0]= atan2f(lo[0], lo[2]) / (float)M_PI;
tempvec[1]= 1.0f - 2.0f*saacos(lo[1]) / (float)M_PI;
tempvec[2]= 0.0f;
co= tempvec;
break;
case TEXCO_OBJECT:
if (mtex->object) {
copy_v3_v3(tempvec, lo);
mul_m4_v3(mtex->object->imat_ren, tempvec);
co= tempvec;
}
break;
case TEXCO_GLOB:
if (rco) {
copy_v3_v3(tempvec, rco);
mul_m4_v3(R.viewinv, tempvec);
co= tempvec;
}
else
co= lo;
// copy_v3_v3(shi->dxgl, shi->dxco);
// mul_m3_v3(R.imat, shi->dxco);
// copy_v3_v3(shi->dygl, shi->dyco);
// mul_m3_v3(R.imat, shi->dyco);
break;
}
/* placement */
if (mtex->projx) texvec[0]= mtex->size[0]*(co[mtex->projx-1]+mtex->ofs[0]);
else texvec[0]= mtex->size[0]*(mtex->ofs[0]);
if (mtex->projy) texvec[1]= mtex->size[1]*(co[mtex->projy-1]+mtex->ofs[1]);
else texvec[1]= mtex->size[1]*(mtex->ofs[1]);
if (mtex->projz) texvec[2]= mtex->size[2]*(co[mtex->projz-1]+mtex->ofs[2]);
else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
/* texture */
if (tex->type==TEX_IMAGE) do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
rgb = multitex(mtex->tex, texvec, dxt, dyt, R.osa, &texres, thread, mtex->which_output, R.pool);
/* texture output */
if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
texres.tin = rgb_to_bw(&texres.tr);
rgb= 0;
}
if (mtex->texflag & MTEX_NEGATIVE) {
if (rgb) {
texres.tr= 1.0f-texres.tr;
texres.tg= 1.0f-texres.tg;
texres.tb= 1.0f-texres.tb;
}
else texres.tin= 1.0f-texres.tin;
}
if (mtex->texflag & MTEX_STENCIL) {
if (rgb) {
fact= texres.ta;
texres.ta*= stencilTin;
stencilTin*= fact;
}
else {
fact= texres.tin;
texres.tin*= stencilTin;
stencilTin*= fact;
}
}
else {
if (rgb) texres.ta *= stencilTin;
else texres.tin*= stencilTin;
}
/* color mapping */
if (mtex->mapto & (WOMAP_HORIZ+WOMAP_ZENUP+WOMAP_ZENDOWN)) {
float tcol[3];
if (rgb==0) {
texres.tr= mtex->r;
texres.tg= mtex->g;
texres.tb= mtex->b;
}
else texres.tin= texres.ta;
tcol[0]= texres.tr; tcol[1]= texres.tg; tcol[2]= texres.tb;
/* inverse gamma correction */
if (tex->type==TEX_IMAGE) {
Image *ima = tex->ima;
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(ima, &tex->iuser, R.pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && R.scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(tcol, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(ima, ibuf, R.pool);
}
if (mtex->mapto & WOMAP_HORIZ) {
texture_rgb_blend(hor, tcol, hor, texres.tin, mtex->colfac, mtex->blendtype);
}
if (mtex->mapto & (WOMAP_ZENUP+WOMAP_ZENDOWN)) {
float zenfac = 0.0f;
if (R.wrld.skytype & WO_SKYREAL) {
if ((skyflag & WO_ZENUP)) {
if (mtex->mapto & WOMAP_ZENUP) zenfac= mtex->zenupfac;
}
else if (mtex->mapto & WOMAP_ZENDOWN) zenfac= mtex->zendownfac;
}
else {
if (mtex->mapto & WOMAP_ZENUP) zenfac= mtex->zenupfac;
else if (mtex->mapto & WOMAP_ZENDOWN) zenfac= mtex->zendownfac;
}
if (zenfac != 0.0f)
texture_rgb_blend(zen, tcol, zen, texres.tin, zenfac, mtex->blendtype);
}
}
if (mtex->mapto & WOMAP_BLEND) {
if (rgb) texres.tin = rgb_to_bw(&texres.tr);
*blend= texture_value_blend(mtex->def_var, *blend, texres.tin, mtex->blendfac, mtex->blendtype);
}
}
}
}
/* ------------------------------------------------------------------------- */
/* col_r supposed to be initialized with la->r,g,b */
void do_lamp_tex(LampRen *la, const float lavec[3], ShadeInput *shi, float col_r[3], int effect)
{
Object *ob;
MTex *mtex;
Tex *tex;
TexResult texres= {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0, NULL};
float *co = NULL, *dx = NULL, *dy = NULL, fact, stencilTin=1.0;
float texvec[3], dxt[3], dyt[3], tempvec[3];
int i, tex_nr, rgb= 0;
if (R.r.scemode & R_NO_TEX) return;
tex_nr= 0;
for (; tex_nr<MAX_MTEX; tex_nr++) {
if (la->mtex[tex_nr]) {
mtex= la->mtex[tex_nr];
tex= mtex->tex;
if (tex==NULL) continue;
texres.nor= NULL;
/* which coords */
if (mtex->texco==TEXCO_OBJECT) {
ob= mtex->object;
if (ob) {
co= tempvec;
dx= dxt;
dy= dyt;
copy_v3_v3(tempvec, shi->co);
mul_m4_v3(ob->imat_ren, tempvec);
if (shi->osatex) {
copy_v3_v3(dxt, shi->dxco);
copy_v3_v3(dyt, shi->dyco);
mul_mat3_m4_v3(ob->imat_ren, dxt);
mul_mat3_m4_v3(ob->imat_ren, dyt);
}
}
else {
co= shi->co;
dx= shi->dxco; dy= shi->dyco;
}
}
else if (mtex->texco==TEXCO_GLOB) {
co= shi->gl; dx= shi->dxco; dy= shi->dyco;
copy_v3_v3(shi->gl, shi->co);
mul_m4_v3(R.viewinv, shi->gl);
}
else if (mtex->texco==TEXCO_VIEW) {
copy_v3_v3(tempvec, lavec);
mul_m3_v3(la->imat, tempvec);
if (la->type==LA_SPOT) {
tempvec[0]*= la->spottexfac;
tempvec[1]*= la->spottexfac;
/* project from 3d to 2d */
tempvec[0] /= -tempvec[2];
tempvec[1] /= -tempvec[2];
}
co= tempvec;
dx= dxt; dy= dyt;
if (shi->osatex) {
copy_v3_v3(dxt, shi->dxlv);
copy_v3_v3(dyt, shi->dylv);
/* need some matrix conversion here? la->imat is a [3][3] matrix!!! **/
mul_m3_v3(la->imat, dxt);
mul_m3_v3(la->imat, dyt);
mul_v3_fl(dxt, la->spottexfac);
mul_v3_fl(dyt, la->spottexfac);
}
}
/* placement */
if (mtex->projx && co) texvec[0]= mtex->size[0]*(co[mtex->projx-1]+mtex->ofs[0]);
else texvec[0]= mtex->size[0]*(mtex->ofs[0]);
if (mtex->projy && co) texvec[1]= mtex->size[1]*(co[mtex->projy-1]+mtex->ofs[1]);
else texvec[1]= mtex->size[1]*(mtex->ofs[1]);
if (mtex->projz && co) texvec[2]= mtex->size[2]*(co[mtex->projz-1]+mtex->ofs[2]);
else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
if (shi->osatex) {
if (!dx) {
for (i=0;i<2;i++) {
dxt[i] = dyt[i] = 0.0;
}
}
else {
if (mtex->projx) {
dxt[0]= mtex->size[0]*dx[mtex->projx-1];
dyt[0]= mtex->size[0]*dy[mtex->projx-1];
}
else {
dxt[0]= 0.0;
dyt[0]= 0.0;
}
if (mtex->projy) {
dxt[1]= mtex->size[1]*dx[mtex->projy-1];
dyt[1]= mtex->size[1]*dy[mtex->projy-1];
}
else {
dxt[1]= 0.0;
dyt[1]= 0.0;
}
if (mtex->projz) {
dxt[2]= mtex->size[2]*dx[mtex->projz-1];
dyt[2]= mtex->size[2]*dy[mtex->projz-1];
}
else {
dxt[2]= 0.0;
dyt[2]= 0.0;
}
}
}
/* texture */
if (tex->type==TEX_IMAGE) {
do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
}
rgb = multitex(tex, texvec, dxt, dyt, shi->osatex, &texres, shi->thread, mtex->which_output, R.pool);
/* texture output */
if (rgb && (mtex->texflag & MTEX_RGBTOINT)) {
texres.tin = rgb_to_bw(&texres.tr);
rgb= 0;
}
if (mtex->texflag & MTEX_NEGATIVE) {
if (rgb) {
texres.tr= 1.0f-texres.tr;
texres.tg= 1.0f-texres.tg;
texres.tb= 1.0f-texres.tb;
}
else texres.tin= 1.0f-texres.tin;
}
if (mtex->texflag & MTEX_STENCIL) {
if (rgb) {
fact= texres.ta;
texres.ta*= stencilTin;
stencilTin*= fact;
}
else {
fact= texres.tin;
texres.tin*= stencilTin;
stencilTin*= fact;
}
}
else {
if (rgb) texres.ta*= stencilTin;
else texres.tin*= stencilTin;
}
/* mapping */
if (((mtex->mapto & LAMAP_COL) && (effect & LA_TEXTURE))||((mtex->mapto & LAMAP_SHAD) && (effect & LA_SHAD_TEX))) {
float col[3];
if (rgb==0) {
texres.tr= mtex->r;
texres.tg= mtex->g;
texres.tb= mtex->b;
}
else if (mtex->mapto & MAP_ALPHA) {
texres.tin= stencilTin;
}
else texres.tin= texres.ta;
/* inverse gamma correction */
if (tex->type==TEX_IMAGE) {
Image *ima = tex->ima;
ImBuf *ibuf = BKE_image_pool_acquire_ibuf(ima, &tex->iuser, R.pool);
/* don't linearize float buffers, assumed to be linear */
if (ibuf && !(ibuf->rect_float) && R.scene_color_manage)
IMB_colormanagement_colorspace_to_scene_linear_v3(&texres.tr, ibuf->rect_colorspace);
BKE_image_pool_release_ibuf(ima, ibuf, R.pool);
}
/* lamp colors were premultiplied with this */
col[0]= texres.tr*la->energy;
col[1]= texres.tg*la->energy;
col[2]= texres.tb*la->energy;
texture_rgb_blend(col_r, col, col_r, texres.tin, mtex->colfac, mtex->blendtype);
}
}
}
}
/* ------------------------------------------------------------------------- */
int externtex(MTex *mtex, const float vec[3], float *tin, float *tr, float *tg, float *tb, float *ta, const int thread, struct ImagePool *pool)
{
Tex *tex;
TexResult texr;
float dxt[3], dyt[3], texvec[3];
int rgb;
tex= mtex->tex;
if (tex==NULL) return 0;
texr.nor= NULL;
/* placement */
if (mtex->projx) texvec[0]= mtex->size[0]*(vec[mtex->projx-1]+mtex->ofs[0]);
else texvec[0]= mtex->size[0]*(mtex->ofs[0]);
if (mtex->projy) texvec[1]= mtex->size[1]*(vec[mtex->projy-1]+mtex->ofs[1]);
else texvec[1]= mtex->size[1]*(mtex->ofs[1]);
if (mtex->projz) texvec[2]= mtex->size[2]*(vec[mtex->projz-1]+mtex->ofs[2]);
else texvec[2]= mtex->size[2]*(mtex->ofs[2]);
/* texture */
if (tex->type==TEX_IMAGE) {
do_2d_mapping(mtex, texvec, NULL, NULL, dxt, dyt);
}
rgb = multitex(tex, texvec, dxt, dyt, 0, &texr, thread, mtex->which_output, pool);
if (rgb) {
texr.tin = rgb_to_bw(&texr.tr);
}
else {
texr.tr= mtex->r;
texr.tg= mtex->g;
texr.tb= mtex->b;
}
*tin= texr.tin;
*tr= texr.tr;
*tg= texr.tg;
*tb= texr.tb;
*ta= texr.ta;
return (rgb != 0);
}
/* ------------------------------------------------------------------------- */
void render_realtime_texture(ShadeInput *shi, Image *ima)
{
TexResult texr;
static Tex imatex[BLENDER_MAX_THREADS]; /* threadsafe */
static int firsttime= 1;
Tex *tex;
float texvec[3], dx[2], dy[2];
ShadeInputUV *suv= &shi->uv[shi->actuv];
int a;
if (R.r.scemode & R_NO_TEX) return;
if (firsttime) {
BLI_lock_thread(LOCK_IMAGE);
if (firsttime) {
for (a=0; a<BLENDER_MAX_THREADS; a++) {
memset(&imatex[a], 0, sizeof(Tex));
default_tex(&imatex[a]);
imatex[a].type= TEX_IMAGE;
}
firsttime= 0;
}
BLI_unlock_thread(LOCK_IMAGE);
}
tex= &imatex[shi->thread];
tex->iuser.ok= ima->ok;
tex->ima = ima;
texvec[0]= 0.5f+0.5f*suv->uv[0];
texvec[1]= 0.5f+0.5f*suv->uv[1];
texvec[2] = 0.0f; /* initalize it because imagewrap looks at it. */
if (shi->osatex) {
dx[0]= 0.5f*suv->dxuv[0];
dx[1]= 0.5f*suv->dxuv[1];
dy[0]= 0.5f*suv->dyuv[0];
dy[1]= 0.5f*suv->dyuv[1];
}
texr.nor= NULL;
if (shi->osatex) imagewraposa(tex, ima, NULL, texvec, dx, dy, &texr, R.pool);
else imagewrap(tex, ima, NULL, texvec, &texr, R.pool);
shi->vcol[0]*= texr.tr;
shi->vcol[1]*= texr.tg;
shi->vcol[2]*= texr.tb;
shi->vcol[3]*= texr.ta;
}
/* A modified part of shadeinput.c -> shade_input_set_uv()
* Used for sampling UV mapped texture color */
static void textured_face_generate_uv(float *uv, const float normal[3], float *hit, float *v1, float *v2, float *v3)
{
float detsh, t00, t10, t01, t11;
int axis1, axis2;
/* find most stable axis to project */
axis_dominant_v3(&axis1, &axis2, normal);
/* compute u,v and derivatives */
t00= v3[axis1]-v1[axis1]; t01= v3[axis2]-v1[axis2];
t10= v3[axis1]-v2[axis1]; t11= v3[axis2]-v2[axis2];
detsh= 1.0f/(t00*t11-t10*t01);
t00*= detsh; t01*=detsh;
t10*=detsh; t11*=detsh;
uv[0] = (hit[axis1]-v3[axis1])*t11-(hit[axis2]-v3[axis2])*t10;
uv[1] = (hit[axis2]-v3[axis2])*t00-(hit[axis1]-v3[axis1])*t01;
/* u and v are in range -1 to 0, we allow a little bit extra but not too much, screws up speedvectors */
CLAMP(uv[0], -2.0f, 1.0f);
CLAMP(uv[1], -2.0f, 1.0f);
}
/* Generate an updated copy of material to use for color sampling. */
Material *RE_init_sample_material(Material *orig_mat, Scene *scene)
{
Tex *tex = NULL;
Material *mat;
int tex_nr;
if (!orig_mat) return NULL;
/* copy material */
mat = localize_material(orig_mat);
/* update material anims */
BKE_animsys_evaluate_animdata(scene, &mat->id, mat->adt, BKE_scene_frame_get(scene), ADT_RECALC_ANIM);
/* strip material copy from unsupported flags */
for (tex_nr=0; tex_nr<MAX_MTEX; tex_nr++) {
if (mat->septex & (1<<tex_nr)) continue;
if (mat->mtex[tex_nr]) {
MTex *mtex = mat->mtex[tex_nr];
if (!mtex->tex) continue;
/* only keep compatible texflags */
mtex->texflag = mtex->texflag & (MTEX_RGBTOINT | MTEX_STENCIL | MTEX_NEGATIVE | MTEX_ALPHAMIX);
/* depending of material type, strip non-compatible mapping modes */
if (mat->material_type == MA_TYPE_SURFACE) {
if (!ELEM4(mtex->texco, TEXCO_ORCO, TEXCO_OBJECT, TEXCO_GLOB, TEXCO_UV)) {
/* ignore this texture */
mtex->texco = 0;
continue;
}
/* strip all mapto flags except color and alpha */
mtex->mapto = (mtex->mapto & MAP_COL) | (mtex->mapto & MAP_ALPHA);
}
else if (mat->material_type == MA_TYPE_VOLUME) {
if (!ELEM3(mtex->texco, TEXCO_OBJECT, TEXCO_ORCO, TEXCO_GLOB)) {
/* ignore */
mtex->texco = 0;
continue;
}
/* strip all mapto flags except color and alpha */
mtex->mapto = mtex->mapto & (MAP_TRANSMISSION_COL | MAP_REFLECTION_COL | MAP_DENSITY);
}
/* if mapped to an object, calculate inverse matrices */
if (mtex->texco==TEXCO_OBJECT) {
Object *ob= mtex->object;
if (ob) {
invert_m4_m4(ob->imat, ob->obmat);
copy_m4_m4(ob->imat_ren, ob->imat);
}
}
/* copy texture */
tex= mtex->tex = localize_texture(mtex->tex);
/* update texture anims */
BKE_animsys_evaluate_animdata(scene, &tex->id, tex->adt, BKE_scene_frame_get(scene), ADT_RECALC_ANIM);
/* update texture cache if required */
if (tex->type==TEX_VOXELDATA) {
cache_voxeldata(tex, (int)scene->r.cfra);
}
if (tex->type==TEX_POINTDENSITY) {
/* set dummy values for render and do cache */
Render dummy_re = {NULL};
dummy_re.scene = scene;
unit_m4(dummy_re.viewinv);
unit_m4(dummy_re.viewmat);
unit_m4(dummy_re.winmat);
dummy_re.winx = dummy_re.winy = 128;
cache_pointdensity(&dummy_re, tex);
}
/* update image sequences and movies */
if (tex->ima && ELEM(tex->ima->source, IMA_SRC_MOVIE, IMA_SRC_SEQUENCE)) {
BKE_image_user_check_frame_calc(&tex->iuser, (int)scene->r.cfra, 0);
}
}
}
return mat;
}
/* free all duplicate data allocated by RE_init_sample_material() */
void RE_free_sample_material(Material *mat)
{
int tex_nr;
/* free textures */
for (tex_nr=0; tex_nr<MAX_MTEX; tex_nr++) {
if (mat->septex & (1<<tex_nr)) continue;
if (mat->mtex[tex_nr]) {
MTex *mtex= mat->mtex[tex_nr];
if (mtex->tex) {
BKE_texture_free(mtex->tex);
MEM_freeN(mtex->tex);
mtex->tex = NULL;
}
}
}
BKE_material_free(mat);
MEM_freeN(mat);
}
/*
* Get material diffuse color and alpha (including linked textures) in given coordinates
*
* color,alpha : input/output color values
* volume_co : sample coordinate in global space. used by volumetric materials
* surface_co : sample surface coordinate in global space. used by "surface" materials
* face_index : surface face index
* hit_quad : whether point is on second "half" of a quad
* orcoDm : orco state derived mesh
*/
void RE_sample_material_color(Material *mat, float color[3], float *alpha, const float volume_co[3], const float surface_co[3], int face_index, short hit_quad, DerivedMesh *orcoDm, Object *ob)
{
MFace *mface;
int v1, v2, v3;
MVert *mvert;
float uv[3], normal[3];
ShadeInput shi = {NULL};
Render re = {NULL};
/* Get face data */
mvert = orcoDm->getVertArray(orcoDm);
mface = orcoDm->getTessFaceArray(orcoDm);
if (!mvert || !mface || !mat) return;
v1=mface[face_index].v1, v2=mface[face_index].v2, v3=mface[face_index].v3;
if (hit_quad) { v2 = mface[face_index].v3; v3 = mface[face_index].v4; }
normal_tri_v3(normal, mvert[v1].co, mvert[v2].co, mvert[v3].co);
/* generate shadeinput with data required */
shi.mat = mat;
/* fill shadeinput data depending on material type */
if (mat->material_type == MA_TYPE_SURFACE) {
/* global coordinates */
copy_v3_v3(shi.gl, surface_co);
/* object space coordinates */
copy_v3_v3(shi.co, surface_co);
mul_m4_v3(ob->imat, shi.co);
/* orco coordinates */
{
float l;
/* Get generated UV */
textured_face_generate_uv(uv, normal, shi.co, mvert[v1].co, mvert[v2].co, mvert[v3].co);
l= 1.0f+uv[0]+uv[1];
/* calculate generated coordinate */
shi.lo[0]= l*mvert[v3].co[0]-uv[0]*mvert[v1].co[0]-uv[1]*mvert[v2].co[0];
shi.lo[1]= l*mvert[v3].co[1]-uv[0]*mvert[v1].co[1]-uv[1]*mvert[v2].co[1];
shi.lo[2]= l*mvert[v3].co[2]-uv[0]*mvert[v1].co[2]-uv[1]*mvert[v2].co[2];
}
/* uv coordinates */
{
int i, layers = CustomData_number_of_layers(&orcoDm->faceData, CD_MTFACE);
int layer_index = CustomData_get_layer_index(&orcoDm->faceData, CD_MTFACE);
/* for every uv map set coords and name */
for (i=0; i<layers; i++) {
if (layer_index >= 0) {
float *uv1, *uv2, *uv3;
float l;
CustomData *data = &orcoDm->faceData;
MTFace *tface = (MTFace *) data->layers[layer_index+i].data;
float uv[3];
/* point layer name from actual layer data */
shi.uv[i].name = data->layers[i].name;
/* Get generated coordinates to calculate UV from */
textured_face_generate_uv(uv, normal, shi.co, mvert[v1].co, mvert[v2].co, mvert[v3].co);
/* Get UV mapping coordinate */
l= 1.0f+uv[0]+uv[1];
uv1= tface[face_index].uv[0];
uv2= (hit_quad) ? tface[face_index].uv[2] : tface[face_index].uv[1];
uv3= (hit_quad) ? tface[face_index].uv[3] : tface[face_index].uv[2];
shi.uv[i].uv[0]= -1.0f + 2.0f*(l*uv3[0]-uv[0]*uv1[0]-uv[1]*uv2[0]);
shi.uv[i].uv[1]= -1.0f + 2.0f*(l*uv3[1]-uv[0]*uv1[1]-uv[1]*uv2[1]);
shi.uv[i].uv[2]= 0.0f; /* texture.c assumes there are 3 coords */
}
}
/* active uv map */
shi.actuv = CustomData_get_active_layer_index(&orcoDm->faceData, CD_MTFACE) - layer_index;
shi.totuv = layers;
}
/* apply initial values from material */
shi.r = mat->r;
shi.g = mat->g;
shi.b = mat->b;
shi.alpha = mat->alpha;
/* do texture */
do_material_tex(&shi, &re);
/* apply result */
color[0] = shi.r;
color[1] = shi.g;
color[2] = shi.b;
*alpha = shi.alpha;
}
else if (mat->material_type == MA_TYPE_VOLUME) {
ObjectInstanceRen obi = {NULL};
obi.ob = ob;
shi.obi = &obi;
unit_m4(re.viewinv);
copy_v3_v3(color, mat->vol.reflection_col);
*alpha = mat->vol.density;
/* do texture */
do_volume_tex(&shi, volume_co, (MAP_TRANSMISSION_COL | MAP_REFLECTION_COL | MAP_DENSITY),
color, alpha, &re);
}
}
/* eof */
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