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/*
* 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.
*/
/** \file
* \ingroup gpu
*
* Intermediate node graph for generating GLSL shaders.
*/
#ifndef __GPU_NODE_GRAPH_H__
#define __GPU_NODE_GRAPH_H__
#include "DNA_customdata_types.h"
#include "DNA_listBase.h"
#include "GPU_glew.h"
#include "GPU_material.h"
#include "GPU_shader.h"
struct GPUNode;
struct GPUOutput;
struct GPUShader;
struct GPUVertAttrLayers;
struct ListBase;
typedef enum eGPUDataSource {
GPU_SOURCE_OUTPUT,
GPU_SOURCE_CONSTANT,
GPU_SOURCE_UNIFORM,
GPU_SOURCE_ATTR,
GPU_SOURCE_BUILTIN,
GPU_SOURCE_STRUCT,
GPU_SOURCE_TEX,
GPU_SOURCE_TEX_TILED_MAPPING,
GPU_SOURCE_VOLUME_GRID,
GPU_SOURCE_VOLUME_GRID_TRANSFORM,
} eGPUDataSource;
typedef enum {
GPU_NODE_LINK_NONE = 0,
GPU_NODE_LINK_ATTR,
GPU_NODE_LINK_BUILTIN,
GPU_NODE_LINK_COLORBAND,
GPU_NODE_LINK_CONSTANT,
GPU_NODE_LINK_IMAGE,
GPU_NODE_LINK_IMAGE_TILED,
GPU_NODE_LINK_IMAGE_TILED_MAPPING,
GPU_NODE_LINK_VOLUME_GRID,
GPU_NODE_LINK_VOLUME_GRID_TRANSFORM,
GPU_NODE_LINK_OUTPUT,
GPU_NODE_LINK_UNIFORM,
} GPUNodeLinkType;
struct GPUNode {
struct GPUNode *next, *prev;
const char *name;
/* Internal flag to mark nodes during pruning */
bool tag;
ListBase inputs;
ListBase outputs;
};
struct GPUNodeLink {
GPUNodeStack *socket;
GPUNodeLinkType link_type;
int users; /* Refcount */
union {
/* GPU_NODE_LINK_CONSTANT | GPU_NODE_LINK_UNIFORM */
const float *data;
/* GPU_NODE_LINK_BUILTIN */
eGPUBuiltin builtin;
/* GPU_NODE_LINK_COLORBAND */
struct GPUTexture **colorband;
/* GPU_NODE_LINK_VOLUME_GRID */
struct GPUMaterialVolumeGrid *volume_grid;
/* GPU_NODE_LINK_OUTPUT */
struct GPUOutput *output;
/* GPU_NODE_LINK_ATTR */
struct GPUMaterialAttribute *attr;
/* GPU_NODE_LINK_IMAGE_BLENDER */
struct GPUMaterialTexture *texture;
};
};
typedef struct GPUOutput {
struct GPUOutput *next, *prev;
GPUNode *node;
eGPUType type; /* data type = length of vector/matrix */
GPUNodeLink *link; /* output link */
int id; /* unique id as created by code generator */
} GPUOutput;
typedef struct GPUInput {
struct GPUInput *next, *prev;
GPUNode *node;
eGPUType type; /* datatype */
GPUNodeLink *link;
int id; /* unique id as created by code generator */
eGPUDataSource source; /* data source */
/* Content based on eGPUDataSource */
union {
/* GPU_SOURCE_CONSTANT | GPU_SOURCE_UNIFORM */
float vec[16]; /* vector data */
/* GPU_SOURCE_BUILTIN */
eGPUBuiltin builtin; /* builtin uniform */
/* GPU_SOURCE_TEX | GPU_SOURCE_TEX_TILED_MAPPING */
struct GPUMaterialTexture *texture;
/* GPU_SOURCE_ATTR */
struct GPUMaterialAttribute *attr;
/* GPU_SOURCE_VOLUME_GRID | GPU_SOURCE_VOLUME_GRID_TRANSFORM */
struct GPUMaterialVolumeGrid *volume_grid;
};
} GPUInput;
typedef struct GPUNodeGraph {
/* Nodes */
ListBase nodes;
/* Output. */
GPUNodeLink *outlink;
/* Requested attributes and textures. */
ListBase attributes;
ListBase textures;
ListBase volume_grids;
} GPUNodeGraph;
/* Node Graph */
void gpu_node_graph_prune_unused(GPUNodeGraph *graph);
void gpu_node_graph_free_nodes(GPUNodeGraph *graph);
void gpu_node_graph_free(GPUNodeGraph *graph);
/* Material calls */
struct GPUNodeGraph *gpu_material_node_graph(struct GPUMaterial *material);
struct GPUTexture **gpu_material_ramp_texture_row_set(struct GPUMaterial *mat,
int size,
float *pixels,
float *row);
struct GSet *gpu_material_used_libraries(struct GPUMaterial *material);
#endif /* __GPU_NODE_GRAPH_H__ */
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