91 lines
2.6 KiB
C
91 lines
2.6 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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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/** \file blender/nodes/intern/CMP_nodes/CMP_gamma.c
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* \ingroup cmpnodes
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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 *UNUSED(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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/* check for negative to avoid nan's */
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out[i] = (in[i] > 0.0f)? pow(in[i],fac[0]): in[i];
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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 *UNUSED(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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void register_node_type_cmp_gamma(ListBase *lb)
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{
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static bNodeType ntype;
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node_type_base(&ntype, CMP_NODE_GAMMA, "Gamma", NODE_CLASS_OP_COLOR, NODE_OPTIONS,
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cmp_node_gamma_in, cmp_node_gamma_out);
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node_type_size(&ntype, 140, 100, 320);
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node_type_exec(&ntype, node_composit_exec_gamma);
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nodeRegisterType(lb, &ntype);
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}
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