c92660b18c
Submitted By: Stephane SOPPERA (soppera) It just increases the max value for gamma correction to 10f. Which as noted in the patch is the same as the Gimp's color level tool. Kent
92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/**
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* $Id$
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*
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2006 Blender Foundation.
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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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#include "../CMP_util.h"
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/* **************** Gamma Tools ******************** */
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static bNodeSocketType cmp_node_gamma_in[]= {
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{ SOCK_RGBA, 1, "Image", 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f},
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{ SOCK_VALUE, 1, "Gamma", 1.0f, 0.0f, 0.0f, 0.0f, 0.001f, 10.0f},
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{ -1, 0, "" }
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};
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static bNodeSocketType cmp_node_gamma_out[]= {
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{ SOCK_RGBA, 0, "Image", 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f},
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{ -1, 0, "" }
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};
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static void do_gamma(bNode *node, float *out, float *in, float *fac)
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{
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int i=0;
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for(i=0; i<3; i++) {
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out[i] = pow(in[i],fac[0]);
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}
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out[3] = in[3];
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}
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static void node_composit_exec_gamma(void *data, bNode *node, bNodeStack **in, bNodeStack **out)
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{
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/* stack order in: Fac, Image */
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/* stack order out: Image */
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if(out[0]->hasoutput==0) return;
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/* input no image? then only color operation */
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if(in[0]->data==NULL) {
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do_gamma(node, out[0]->vec, in[0]->vec, in[1]->vec);
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}
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else {
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/* make output size of input image */
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CompBuf *cbuf= in[0]->data;
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CompBuf *stackbuf= alloc_compbuf(cbuf->x, cbuf->y, CB_RGBA, 1); // allocs
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composit2_pixel_processor(node, stackbuf, cbuf, in[0]->vec, in[1]->data, in[1]->vec, do_gamma, CB_RGBA, CB_VAL);
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out[0]->data= stackbuf;
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}
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}
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bNodeType cmp_node_gamma= {
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/* *next,*prev */ NULL, NULL,
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/* type code */ CMP_NODE_GAMMA,
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/* name */ "Gamma",
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/* width+range */ 140, 100, 320,
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/* class+opts */ NODE_CLASS_OP_COLOR, NODE_OPTIONS,
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/* input sock */ cmp_node_gamma_in,
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/* output sock */ cmp_node_gamma_out,
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/* storage */ "",
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/* execfunc */ node_composit_exec_gamma,
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/* butfunc */ NULL,
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/* initfunc */ NULL,
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/* freestoragefunc */ NULL,
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/* copysotragefunc */ NULL,
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/* id */ NULL
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};
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