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/*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This shader 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* This shader 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 shader; 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 GPU_material.h
* \ingroup gpu
*/
#ifndef __GPU_MATERIAL__
#define __GPU_MATERIAL__
#include "DNA_listBase.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Image;
struct ImageUser;
struct Material;
struct Object;
struct Lamp;
struct Image;
struct bNode;
struct LinkNode;
struct Scene;
struct GPUVertexAttribs;
struct GPUNode;
struct GPUNodeLink;
struct GPUNodeStack;
struct GPUMaterial;
struct GPUTexture;
struct GPULamp;
typedef struct GPUNode GPUNode;
typedef struct GPUNodeLink GPUNodeLink;
typedef struct GPUMaterial GPUMaterial;
typedef struct GPULamp GPULamp;
/* Functions to create GPU Materials nodes */
typedef enum GPUType {
GPU_NONE = 0,
GPU_FLOAT = 1,
GPU_VEC2 = 2,
GPU_VEC3 = 3,
GPU_VEC4 = 4,
GPU_MAT3 = 9,
GPU_MAT4 = 16,
GPU_TEX2D = 1002,
GPU_SHADOW2D = 1003,
GPU_ATTRIB = 3001
} GPUType;
typedef enum GPUBuiltin {
GPU_VIEW_MATRIX = 1,
GPU_OBJECT_MATRIX = 2,
GPU_INVERSE_VIEW_MATRIX = 4,
GPU_INVERSE_OBJECT_MATRIX = 8,
GPU_VIEW_POSITION = 16,
GPU_VIEW_NORMAL = 32,
GPU_OBCOLOR = 64
} GPUBuiltin;
typedef enum GPUBlendMode {
GPU_BLEND_SOLID = 0,
GPU_BLEND_ADD = 1,
GPU_BLEND_ALPHA = 2,
GPU_BLEND_CLIP = 4
} GPUBlendMode;
typedef struct GPUNodeStack {
GPUType type;
const char *name;
float vec[4];
struct GPUNodeLink *link;
short hasinput;
short hasoutput;
short sockettype;
} GPUNodeStack;
GPUNodeLink *GPU_attribute(int type, const char *name);
GPUNodeLink *GPU_uniform(float *num);
GPUNodeLink *GPU_dynamic_uniform(float *num, int dynamictype, void *data);
GPUNodeLink *GPU_image(struct Image *ima, struct ImageUser *iuser);
GPUNodeLink *GPU_texture(int size, float *pixels);
GPUNodeLink *GPU_dynamic_texture(struct GPUTexture *tex, int dynamictype, void *data);
GPUNodeLink *GPU_socket(GPUNodeStack *sock);
GPUNodeLink *GPU_builtin(GPUBuiltin builtin);
int GPU_link(GPUMaterial *mat, const char *name, ...);
int GPU_stack_link(GPUMaterial *mat, const char *name, GPUNodeStack *in, GPUNodeStack *out, ...);
void GPU_material_output_link(GPUMaterial *material, GPUNodeLink *link);
void GPU_material_enable_alpha(GPUMaterial *material);
GPUBlendMode GPU_material_blend_mode(GPUMaterial *material, float obcol[4]);
/* High level functions to create and use GPU materials */
GPUMaterial *GPU_material_from_blender(struct Scene *scene, struct Material *ma);
void GPU_material_free(struct Material *ma);
void GPU_materials_free(void);
void GPU_material_bind(GPUMaterial *material, int oblay, int viewlay, double time, int mipmap);
void GPU_material_bind_uniforms(GPUMaterial *material, float obmat[][4], float viewmat[][4], float viewinv[][4], float obcol[4]);
void GPU_material_unbind(GPUMaterial *material);
int GPU_material_bound(GPUMaterial *material);
void GPU_material_vertex_attributes(GPUMaterial *material,
struct GPUVertexAttribs *attrib);
/* Exported shading */
typedef struct GPUShadeInput {
GPUMaterial *gpumat;
struct Material *mat;
GPUNodeLink *rgb, *specrgb, *vn, *view, *vcol, *ref;
GPUNodeLink *alpha, *refl, *spec, *emit, *har, *amb;
} GPUShadeInput;
typedef struct GPUShadeResult {
GPUNodeLink *diff, *spec, *combined, *alpha;
} GPUShadeResult;
void GPU_shadeinput_set(GPUMaterial *mat, struct Material *ma, GPUShadeInput *shi);
void GPU_shaderesult_set(GPUShadeInput *shi, GPUShadeResult *shr);
/* Export GLSL shader */
typedef enum GPUDynamicType {
GPU_DYNAMIC_NONE = 0,
GPU_DYNAMIC_OBJECT_VIEWMAT = 1,
GPU_DYNAMIC_OBJECT_MAT = 2,
GPU_DYNAMIC_OBJECT_VIEWIMAT = 3,
GPU_DYNAMIC_OBJECT_IMAT = 4,
GPU_DYNAMIC_OBJECT_COLOR = 5,
GPU_DYNAMIC_LAMP_FIRST = 6,
GPU_DYNAMIC_LAMP_DYNVEC = 6,
GPU_DYNAMIC_LAMP_DYNCO = 7,
GPU_DYNAMIC_LAMP_DYNIMAT = 8,
GPU_DYNAMIC_LAMP_DYNPERSMAT = 9,
GPU_DYNAMIC_LAMP_DYNENERGY = 10,
GPU_DYNAMIC_LAMP_DYNCOL = 11,
GPU_DYNAMIC_LAMP_LAST = 11,
GPU_DYNAMIC_SAMPLER_2DBUFFER = 12,
GPU_DYNAMIC_SAMPLER_2DIMAGE = 13,
GPU_DYNAMIC_SAMPLER_2DSHADOW = 14,
} GPUDynamicType;
typedef enum GPUDataType {
GPU_DATA_NONE = 0,
GPU_DATA_1I = 1, // 1 integer
GPU_DATA_1F = 2,
GPU_DATA_2F = 3,
GPU_DATA_3F = 4,
GPU_DATA_4F = 5,
GPU_DATA_9F = 6,
GPU_DATA_16F = 7,
GPU_DATA_4UB = 8,
} GPUDataType;
/* this structure gives information of each uniform found in the shader */
typedef struct GPUInputUniform {
struct GPUInputUniform *next, *prev;
char varname[32]; /* name of uniform in shader */
GPUDynamicType type; /* type of uniform, data format and calculation derive from it */
GPUDataType datatype; /* type of uniform data */
struct Object *lamp; /* when type=GPU_DYNAMIC_LAMP_... or GPU_DYNAMIC_SAMPLER_2DSHADOW */
struct Image *image; /* when type=GPU_DYNAMIC_SAMPLER_2DIMAGE */
int texnumber; /* when type=GPU_DYNAMIC_SAMPLER, texture number: 0.. */
unsigned char *texpixels; /* for internally generated texture, pixel data in RGBA format */
int texsize; /* size in pixel of the texture in texpixels buffer: for 2D textures, this is S and T size (square texture) */
} GPUInputUniform;
typedef struct GPUInputAttribute {
struct GPUInputAttribute *next, *prev;
char varname[32]; /* name of attribute in shader */
int type; /* from CustomData.type, data type derives from it */
GPUDataType datatype; /* type of attribute data */
const char *name; /* layer name */
int number; /* generic attribute number */
} GPUInputAttribute;
typedef struct GPUShaderExport {
ListBase uniforms;
ListBase attributes;
char *vertex;
char *fragment;
} GPUShaderExport;
GPUShaderExport *GPU_shader_export(struct Scene *scene, struct Material *ma);
void GPU_free_shader_export(GPUShaderExport *shader);
/* Lamps */
GPULamp *GPU_lamp_from_blender(struct Scene *scene, struct Object *ob, struct Object *par);
void GPU_lamp_free(struct Object *ob);
int GPU_lamp_has_shadow_buffer(GPULamp *lamp);
void GPU_lamp_shadow_buffer_bind(GPULamp *lamp, float viewmat[][4], int *winsize, float winmat[][4]);
void GPU_lamp_shadow_buffer_unbind(GPULamp *lamp);
void GPU_lamp_update(GPULamp *lamp, int lay, int hide, float obmat[][4]);
void GPU_lamp_update_colors(GPULamp *lamp, float r, float g, float b, float energy);
int GPU_lamp_shadow_layer(GPULamp *lamp);
#ifdef __cplusplus
}
#endif
#endif /*__GPU_MATERIAL__*/
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