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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): Brecht Van Lommel.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/gpu/intern/gpu_codegen.h
* \ingroup gpu
*/
#ifndef __GPU_CODEGEN_H__
#define __GPU_CODEGEN_H__
#include "DNA_customdata_types.h"
#include "DNA_listBase.h"
#include "GPU_material.h"
#include "GPU_glew.h"
struct ListBase;
struct GPUShader;
struct GPUOutput;
struct GPUNode;
struct GPUVertexAttribs;
struct PreviewImage;
/* Pass Generation
* - Takes a list of nodes and a desired output, and makes a pass. This
* will take ownership of the nodes and free them early if unused or
* at the end if used.
*/
typedef enum GPUDataSource {
GPU_SOURCE_OUTPUT,
GPU_SOURCE_CONSTANT,
GPU_SOURCE_UNIFORM,
GPU_SOURCE_ATTRIB,
GPU_SOURCE_BUILTIN,
GPU_SOURCE_STRUCT,
GPU_SOURCE_TEX,
} GPUDataSource;
typedef enum {
GPU_NODE_LINK_NONE = 0,
GPU_NODE_LINK_ATTRIB,
GPU_NODE_LINK_BUILTIN,
GPU_NODE_LINK_COLORBAND,
GPU_NODE_LINK_CONSTANT,
GPU_NODE_LINK_IMAGE_BLENDER,
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 */
float *data;
/* GPU_NODE_LINK_BUILTIN */
GPUBuiltin builtin;
/* GPU_NODE_LINK_COLORBAND */
struct GPUTexture **coba;
/* GPU_NODE_LINK_OUTPUT */
struct GPUOutput *output;
/* GPU_NODE_LINK_ATTRIB */
struct {
const char *attribname;
CustomDataType attribtype;
};
/* GPU_NODE_LINK_IMAGE_BLENDER */
struct {
struct Image *ima;
struct ImageUser *iuser;
bool image_isdata;
};
};
};
typedef struct GPUOutput {
struct GPUOutput *next, *prev;
GPUNode *node;
GPUType 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;
GPUType type; /* datatype */
GPUNodeLink *link;
int id; /* unique id as created by code generator */
GPUDataSource source; /* data source */
int shaderloc; /* id from opengl */
char shadername[32]; /* name in shader */
/* Content based on GPUDataSource */
union {
/* GPU_SOURCE_CONSTANT | GPU_SOURCE_UNIFORM */
float vec[16]; /* vector data */
/* GPU_SOURCE_BUILTIN */
GPUBuiltin builtin; /* builtin uniform */
/* GPU_SOURCE_TEX */
struct {
struct GPUTexture **coba; /* input texture, only set at runtime */
struct Image *ima; /* image */
struct ImageUser *iuser; /* image user */
bool image_isdata; /* image does not contain color data */
bool bindtex; /* input is responsible for binding the texture? */
int texid; /* number for multitexture, starting from zero */
GPUType textype; /* texture type (2D, 1D Array ...) */
};
/* GPU_SOURCE_ATTRIB */
struct {
char attribname[MAX_CUSTOMDATA_LAYER_NAME]; /* attribute name */
int attribid; /* id for vertex attributes */
bool attribfirst; /* this is the first one that is bound */
CustomDataType attribtype; /* attribute type */
};
};
} GPUInput;
struct GPUPass {
struct GPUPass *next;
struct GPUShader *shader;
char *fragmentcode;
char *geometrycode;
char *vertexcode;
char *defines;
uint refcount; /* Orphaned GPUPasses gets freed by the garbage collector. */
uint32_t hash; /* Identity hash generated from all GLSL code. */
bool compiled; /* Did we already tried to compile the attached GPUShader. */
};
typedef struct GPUPass GPUPass;
GPUPass *GPU_generate_pass(
GPUMaterial *material,
GPUNodeLink *frag_outlink, struct GPUVertexAttribs *attribs,
ListBase *nodes, int *builtins,
const char *vert_code, const char *geom_code,
const char *frag_lib, const char *defines);
struct GPUShader *GPU_pass_shader_get(GPUPass *pass);
void GPU_nodes_extract_dynamic_inputs(struct GPUShader *shader, ListBase *inputs, ListBase *nodes);
void GPU_nodes_get_vertex_attributes(ListBase *nodes, struct GPUVertexAttribs *attribs);
void GPU_nodes_prune(ListBase *nodes, struct GPUNodeLink *outlink);
void GPU_pass_compile(GPUPass *pass, const char *shname);
void GPU_pass_release(GPUPass *pass);
void GPU_pass_free_nodes(ListBase *nodes);
void GPU_inputs_free(ListBase *inputs);
void gpu_codegen_init(void);
void gpu_codegen_exit(void);
/* Material calls */
const char *GPU_builtin_name(GPUBuiltin builtin);
void gpu_material_add_node(struct GPUMaterial *material, struct GPUNode *node);
struct GPUTexture **gpu_material_ramp_texture_row_set(GPUMaterial *mat, int size, float *pixels, float *row);
#endif
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