SHD_curves.c

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/*
 * $Id: SHD_curves.c 36276 2011-04-21 15:53:30Z campbellbarton $
 *
 * ***** 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) 2005 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "../SHD_util.h"


/* **************** CURVE VEC  ******************** */
static bNodeSocketType sh_node_curve_vec_in[]= {
        {       SOCK_VALUE, 0, "Fac",   1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f},
        {       SOCK_VECTOR, 1, "Vector",       0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
        {       -1, 0, ""       }
};

static bNodeSocketType sh_node_curve_vec_out[]= {
        {       SOCK_VECTOR, 0, "Vector",       0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
        {       -1, 0, ""       }
};

static void node_shader_exec_curve_vec(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        float vec[3];
        
        /* stack order input:  vec */
        /* stack order output: vec */
        nodestack_get_vec(vec, SOCK_VECTOR, in[1]);
        curvemapping_evaluate3F(node->storage, out[0]->vec, vec);
}

static void node_shader_init_curve_vec(bNode* node)
{
        node->storage= curvemapping_add(3, -1.0f, -1.0f, 1.0f, 1.0f);
}

static int gpu_shader_curve_vec(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
        float *array;
        int size;

        curvemapping_table_RGBA(node->storage, &array, &size);
        return GPU_stack_link(mat, "curves_vec", in, out, GPU_texture(size, array));
}

void register_node_type_sh_curve_vec(ListBase *lb)
{
        static bNodeType ntype;

        node_type_base(&ntype, SH_NODE_CURVE_VEC, "Vector Curves", NODE_CLASS_OP_VECTOR, NODE_OPTIONS,
                sh_node_curve_vec_in, sh_node_curve_vec_out);
        node_type_size(&ntype, 200, 140, 320);
        node_type_init(&ntype, node_shader_init_curve_vec);
        node_type_storage(&ntype, "CurveMapping", node_free_curves, node_copy_curves);
        node_type_exec(&ntype, node_shader_exec_curve_vec);
        node_type_gpu(&ntype, gpu_shader_curve_vec);

        nodeRegisterType(lb, &ntype);
}


/* **************** CURVE RGB  ******************** */
static bNodeSocketType sh_node_curve_rgb_in[]= {
        {       SOCK_VALUE, 1, "Fac",   1.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
        {       SOCK_RGBA, 1, "Color",  0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f},
        {       -1, 0, ""       }
};

static bNodeSocketType sh_node_curve_rgb_out[]= {
        {       SOCK_RGBA, 0, "Color",  0.0f, 0.0f, 1.0f, 1.0f, -1.0f, 1.0f},
        {       -1, 0, ""       }
};

static void node_shader_exec_curve_rgb(void *UNUSED(data), bNode *node, bNodeStack **in, bNodeStack **out)
{
        float vec[3];
        
        /* stack order input:  vec */
        /* stack order output: vec */
        nodestack_get_vec(vec, SOCK_VECTOR, in[1]);
        curvemapping_evaluateRGBF(node->storage, out[0]->vec, vec);
        if(in[0]->vec[0] != 1.0f) {
                interp_v3_v3v3(out[0]->vec, vec, out[0]->vec, *in[0]->vec);
        }
}

static void node_shader_init_curve_rgb(bNode *node)
{
        node->storage= curvemapping_add(4, 0.0f, 0.0f, 1.0f, 1.0f);
}

static int gpu_shader_curve_rgb(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
        float *array;
        int size;
        curvemapping_table_RGBA(node->storage, &array, &size);
        return GPU_stack_link(mat, "curves_rgb", in, out, GPU_texture(size, array));
}

void register_node_type_sh_curve_rgb(ListBase *lb)
{
        static bNodeType ntype;

        node_type_base(&ntype, SH_NODE_CURVE_RGB, "RGB Curves", NODE_CLASS_OP_COLOR, NODE_OPTIONS,
                sh_node_curve_rgb_in, sh_node_curve_rgb_out);
        node_type_size(&ntype, 200, 140, 320);
        node_type_init(&ntype, node_shader_init_curve_rgb);
        node_type_storage(&ntype, "CurveMapping", node_free_curves, node_copy_curves);
        node_type_exec(&ntype, node_shader_exec_curve_rgb);
        node_type_gpu(&ntype, gpu_shader_curve_rgb);

        nodeRegisterType(lb, &ntype);
}