Brecht Van Lommel
e88a715364
This further separates requested attributes and textures from the actual node graph, that can be retained after the graph has been compiled and freed. It makes it easier to add volume grids as a native concept, which sits somewhere between an attribute and a texture. It also adds explicit link types for UDIM tile mapping, rather than relying on fairly hidden logic.
161 lines
4.1 KiB
C++
161 lines
4.1 KiB
C++
/*
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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) 2005 Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup gpu
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*
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* Intermediate node graph for generating GLSL shaders.
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*/
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#ifndef __GPU_NODE_GRAPH_H__
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#define __GPU_NODE_GRAPH_H__
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#include "DNA_customdata_types.h"
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#include "DNA_listBase.h"
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#include "GPU_material.h"
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#include "GPU_glew.h"
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#include "GPU_shader.h"
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struct GPUNode;
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struct GPUOutput;
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struct GPUShader;
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struct GPUVertAttrLayers;
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struct ListBase;
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typedef enum eGPUDataSource {
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GPU_SOURCE_OUTPUT,
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GPU_SOURCE_CONSTANT,
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GPU_SOURCE_UNIFORM,
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GPU_SOURCE_ATTR,
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GPU_SOURCE_BUILTIN,
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GPU_SOURCE_STRUCT,
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GPU_SOURCE_TEX,
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GPU_SOURCE_TEX_TILED_MAPPING,
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} eGPUDataSource;
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typedef enum {
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GPU_NODE_LINK_NONE = 0,
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GPU_NODE_LINK_ATTR,
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GPU_NODE_LINK_BUILTIN,
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GPU_NODE_LINK_COLORBAND,
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GPU_NODE_LINK_CONSTANT,
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GPU_NODE_LINK_IMAGE,
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GPU_NODE_LINK_IMAGE_TILED,
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GPU_NODE_LINK_IMAGE_TILED_MAPPING,
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GPU_NODE_LINK_OUTPUT,
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GPU_NODE_LINK_UNIFORM,
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} GPUNodeLinkType;
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struct GPUNode {
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struct GPUNode *next, *prev;
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const char *name;
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/* Internal flag to mark nodes during pruning */
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bool tag;
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ListBase inputs;
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ListBase outputs;
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};
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struct GPUNodeLink {
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GPUNodeStack *socket;
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GPUNodeLinkType link_type;
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int users; /* Refcount */
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union {
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/* GPU_NODE_LINK_CONSTANT | GPU_NODE_LINK_UNIFORM */
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const float *data;
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/* GPU_NODE_LINK_BUILTIN */
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eGPUBuiltin builtin;
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/* GPU_NODE_LINK_COLORBAND */
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struct GPUTexture **colorband;
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/* GPU_NODE_LINK_OUTPUT */
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struct GPUOutput *output;
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/* GPU_NODE_LINK_ATTR */
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struct GPUMaterialAttribute *attr;
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/* GPU_NODE_LINK_IMAGE_BLENDER */
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struct GPUMaterialTexture *texture;
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};
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};
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typedef struct GPUOutput {
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struct GPUOutput *next, *prev;
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GPUNode *node;
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eGPUType type; /* data type = length of vector/matrix */
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GPUNodeLink *link; /* output link */
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int id; /* unique id as created by code generator */
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} GPUOutput;
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typedef struct GPUInput {
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struct GPUInput *next, *prev;
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GPUNode *node;
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eGPUType type; /* datatype */
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GPUNodeLink *link;
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int id; /* unique id as created by code generator */
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eGPUDataSource source; /* data source */
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/* Content based on eGPUDataSource */
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union {
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/* GPU_SOURCE_CONSTANT | GPU_SOURCE_UNIFORM */
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float vec[16]; /* vector data */
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/* GPU_SOURCE_BUILTIN */
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eGPUBuiltin builtin; /* builtin uniform */
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/* GPU_SOURCE_TEX | GPU_SOURCE_TEX_TILED_MAPPING */
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struct GPUMaterialTexture *texture;
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/* GPU_SOURCE_ATTR */
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struct GPUMaterialAttribute *attr;
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};
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} GPUInput;
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typedef struct GPUNodeGraph {
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/* Nodes */
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ListBase nodes;
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/* Output. */
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GPUNodeLink *outlink;
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/* Requested attributes and textures. */
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ListBase attributes;
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ListBase textures;
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} GPUNodeGraph;
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/* Node Graph */
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void gpu_node_graph_prune_unused(GPUNodeGraph *graph);
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void gpu_node_graph_free_nodes(GPUNodeGraph *graph);
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void gpu_node_graph_free(GPUNodeGraph *graph);
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/* Material calls */
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struct GPUNodeGraph *gpu_material_node_graph(struct GPUMaterial *material);
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struct GPUTexture **gpu_material_ramp_texture_row_set(struct GPUMaterial *mat,
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int size,
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float *pixels,
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float *row);
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struct GSet *gpu_material_used_libraries(struct GPUMaterial *material);
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#endif /* __GPU_NODE_GRAPH_H__ */
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