Brecht Van Lommel
9f903208e8
For example for vector displacement, you may have an EXR texture that has negative colors values. Blender clamps these by default, now the Colors panel for textures has a Clamp option to disable this clamping. This option affects all texture types and is enabled by default, you need to disable it if you want negative values to have an influence. Patch by Fredrik Hansson with modifications by me.
90 lines
4.0 KiB
C++
90 lines
4.0 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file blender/render/intern/include/texture.h
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* \ingroup render
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*/
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#ifndef __TEXTURE_H__
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#define __TEXTURE_H__
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#define BRICONT \
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texres->tin= (texres->tin-0.5f) * tex->contrast+tex->bright-0.5f; \
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if(!(tex->flag & TEX_NO_CLAMP)) { \
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if (texres->tin < 0.0f) texres->tin= 0.0f; \
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else if (texres->tin > 1.0f) texres->tin= 1.0f; \
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} \
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#define BRICONTRGB \
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texres->tr= tex->rfac*((texres->tr-0.5f)*tex->contrast+tex->bright-0.5f); \
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texres->tg= tex->gfac*((texres->tg-0.5f)*tex->contrast+tex->bright-0.5f); \
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texres->tb= tex->bfac*((texres->tb-0.5f)*tex->contrast+tex->bright-0.5f); \
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if(!(tex->flag & TEX_NO_CLAMP)) { \
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if (texres->tr < 0.0f) texres->tr= 0.0f; \
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if (texres->tg < 0.0f) texres->tg= 0.0f; \
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if (texres->tb < 0.0f) texres->tb= 0.0f; \
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} \
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if (tex->saturation != 1.0f) { \
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float _hsv[3]; \
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rgb_to_hsv(texres->tr, texres->tg, texres->tb, \
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_hsv, _hsv+1, _hsv+2); \
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_hsv[1] *= tex->saturation; \
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hsv_to_rgb(_hsv[0], _hsv[1], _hsv[2], \
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&texres->tr, &texres->tg, &texres->tb); \
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} \
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struct HaloRen;
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struct ShadeInput;
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struct TexResult;
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struct Tex;
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struct Image;
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struct ImBuf;
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struct ImagePool;
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/* texture.h */
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void do_halo_tex(struct HaloRen *har, float xn, float yn, float col_r[4]);
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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);
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void do_material_tex(struct ShadeInput *shi, struct Render *re);
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void do_lamp_tex(LampRen *la, const float lavec[3], struct ShadeInput *shi, float col_r[3], int effect);
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void do_volume_tex(struct ShadeInput *shi, const float xyz[3], int mapto_flag, float col_r[3], float *val, struct Render *re);
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void init_render_textures(Render *re);
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void end_render_textures(Render *re);
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void render_realtime_texture(struct ShadeInput *shi, struct Image *ima);
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/* imagetexture.h */
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int imagewraposa(struct Tex *tex, struct Image *ima, struct ImBuf *ibuf, const float texvec[3], const float dxt[2], const float dyt[2], struct TexResult *texres, struct ImagePool *pool);
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int imagewrap(struct Tex *tex, struct Image *ima, struct ImBuf *ibuf, const float texvec[3], struct TexResult *texres, struct ImagePool *pool);
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void image_sample(struct Image *ima, float fx, float fy, float dx, float dy, float result[4], struct ImagePool *pool);
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#endif /* __TEXTURE_H__ */
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