node_shader_curves.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) 2005 Blender Foundation.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include "node_shader_util.h"


/* **************** CURVE VEC  ******************** */
static bNodeSocketTemplate sh_node_curve_vec_in[]= {
    {   SOCK_FLOAT, 0, "Fac",   1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, PROP_FACTOR},
    {   SOCK_VECTOR, 1, "Vector",   0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE},
    {   -1, 0, ""   }
};

static bNodeSocketTemplate sh_node_curve_vec_out[]= {
    {   SOCK_VECTOR, 0, "Vector"},
    {   -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(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
    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(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, SH_NODE_CURVE_VEC, "Vector Curves", NODE_CLASS_OP_VECTOR, NODE_OPTIONS);
    node_type_compatibility(&ntype, NODE_OLD_SHADING);
    node_type_socket_templates(&ntype, 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(ttype, &ntype);
}


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

static bNodeSocketTemplate sh_node_curve_rgb_out[]= {
    {   SOCK_RGBA, 0, "Color"},
    {   -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(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
    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(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, SH_NODE_CURVE_RGB, "RGB Curves", NODE_CLASS_OP_COLOR, NODE_OPTIONS);
    node_type_compatibility(&ntype, NODE_OLD_SHADING);
    node_type_socket_templates(&ntype, 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(ttype, &ntype);
}