node_shader_tex_environment.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"

/* **************** OUTPUT ******************** */

static bNodeSocketTemplate sh_node_tex_environment_in[]= {
    {   SOCK_VECTOR, 1, "Vector",       0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE},
    {   -1, 0, ""   }
};

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

static void node_shader_init_tex_environment(bNodeTree *UNUSED(ntree), bNode* node, bNodeTemplate *UNUSED(ntemp))
{
    NodeTexEnvironment *tex = MEM_callocN(sizeof(NodeTexEnvironment), "NodeTexEnvironment");
    default_tex_mapping(&tex->base.tex_mapping);
    default_color_mapping(&tex->base.color_mapping);
    tex->color_space = SHD_COLORSPACE_SRGB;

    node->storage = tex;
}

static int node_shader_gpu_tex_environment(GPUMaterial *mat, bNode *node, GPUNodeStack *in, GPUNodeStack *out)
{
    Image *ima= (Image*)node->id;
    ImageUser *iuser= NULL;

    if(!ima) {
        float black[4] = {0.0f, 0.0f, 0.0f, 1.0f};
        GPUNodeLink *vec = GPU_uniform(black);
        return GPU_stack_link(mat, "set_rgba", out, out, vec);
    }

    if(!in[0].link)
        in[0].link = GPU_builtin(GPU_VIEW_POSITION);

    node_shader_gpu_tex_mapping(mat, node, in, out);

    return GPU_stack_link(mat, "node_tex_environment", in, out, GPU_image(ima, iuser));
}

/* node type definition */
void register_node_type_sh_tex_environment(bNodeTreeType *ttype)
{
    static bNodeType ntype;

    node_type_base(ttype, &ntype, SH_NODE_TEX_ENVIRONMENT, "Environment Texture", NODE_CLASS_TEXTURE, NODE_OPTIONS);
    node_type_compatibility(&ntype, NODE_NEW_SHADING);
    node_type_socket_templates(&ntype, sh_node_tex_environment_in, sh_node_tex_environment_out);
    node_type_size(&ntype, 150, 60, 200);
    node_type_init(&ntype, node_shader_init_tex_environment);
    node_type_storage(&ntype, "NodeTexEnvironment", node_free_standard_storage, node_copy_standard_storage);
    node_type_exec(&ntype, NULL);
    node_type_gpu(&ntype, node_shader_gpu_tex_environment);

    nodeRegisterType(ttype, &ntype);
}