Alexander Gavrilov
6fdcca8de6
This patch allows the user to type a property name into the Attribute node, which will then output the value of the property for each individual object, allowing to e.g. customize shaders by object without duplicating the shader. In order to make supporting this easier for Eevee, it is necessary to explicitly choose whether the attribute is varying or uniform via a dropdown option of the Attribute node. The dropdown also allows choosing whether instancing should be taken into account. The Cycles design treats all attributes as one common namespace, so the Blender interface converts the enum to a name prefix that can't be entered using keyboard. In Eevee, the attributes are provided to the shader via a UBO indexed with resource_id, similar to the existing Object Info data. Unlike it, however, it is necessary to maintain a separate buffer for every requested combination of attributes. This is done using a hash table with the attribute set as the key, as it is expected that technically different but similar materials may use the same set of attributes. In addition, in order to minimize wasted memory, a sparse UBO pool is implemented, so that chunks that don't contain any data don't have to be allocated. The back-end Cycles code is already refactored and committed by Brecht. Differential Revision: https://developer.blender.org/D2057
292 lines
9.8 KiB
C++
292 lines
9.8 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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#pragma once
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#include "DNA_customdata_types.h" /* for CustomDataType */
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#include "DNA_listBase.h"
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#include "BLI_sys_types.h" /* for bool */
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#include "GPU_texture.h" /* for eGPUSamplerState */
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct GHash;
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struct GPUMaterial;
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struct GPUNode;
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struct GPUNodeLink;
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struct GPUNodeStack;
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struct GPUTexture;
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struct GPUUniformBuf;
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struct Image;
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struct ImageUser;
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struct ListBase;
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struct Main;
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struct Material;
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struct Scene;
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struct bNode;
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struct bNodeTree;
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typedef struct GPUMaterial GPUMaterial;
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typedef struct GPUNode GPUNode;
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typedef struct GPUNodeLink GPUNodeLink;
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/* Functions to create GPU Materials nodes */
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typedef enum eGPUType {
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/* Keep in sync with GPU_DATATYPE_STR */
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/* The value indicates the number of elements in each type */
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GPU_NONE = 0,
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GPU_FLOAT = 1,
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GPU_VEC2 = 2,
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GPU_VEC3 = 3,
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GPU_VEC4 = 4,
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GPU_MAT3 = 9,
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GPU_MAT4 = 16,
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GPU_MAX_CONSTANT_DATA = GPU_MAT4,
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/* Values not in GPU_DATATYPE_STR */
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GPU_TEX1D_ARRAY = 1001,
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GPU_TEX2D = 1002,
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GPU_TEX2D_ARRAY = 1003,
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GPU_TEX3D = 1004,
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GPU_SHADOW2D = 1005,
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GPU_TEXCUBE = 1006,
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/* GLSL Struct types */
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GPU_CLOSURE = 1007,
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/* Opengl Attributes */
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GPU_ATTR = 3001,
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} eGPUType;
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typedef enum eGPUBuiltin {
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GPU_VIEW_MATRIX = (1 << 0),
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GPU_OBJECT_MATRIX = (1 << 1),
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GPU_INVERSE_VIEW_MATRIX = (1 << 2),
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GPU_INVERSE_OBJECT_MATRIX = (1 << 3),
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GPU_VIEW_POSITION = (1 << 4),
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GPU_VIEW_NORMAL = (1 << 5),
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GPU_OBJECT_COLOR = (1 << 6),
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GPU_AUTO_BUMPSCALE = (1 << 7),
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GPU_CAMERA_TEXCO_FACTORS = (1 << 8),
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GPU_PARTICLE_SCALAR_PROPS = (1 << 9),
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GPU_PARTICLE_LOCATION = (1 << 10),
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GPU_PARTICLE_VELOCITY = (1 << 11),
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GPU_PARTICLE_ANG_VELOCITY = (1 << 12),
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GPU_LOC_TO_VIEW_MATRIX = (1 << 13),
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GPU_INVERSE_LOC_TO_VIEW_MATRIX = (1 << 14),
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GPU_OBJECT_INFO = (1 << 15),
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GPU_BARYCENTRIC_TEXCO = (1 << 16),
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GPU_BARYCENTRIC_DIST = (1 << 17),
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GPU_WORLD_NORMAL = (1 << 18),
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} eGPUBuiltin;
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typedef enum eGPUMatFlag {
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GPU_MATFLAG_DIFFUSE = (1 << 0),
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GPU_MATFLAG_GLOSSY = (1 << 1),
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GPU_MATFLAG_REFRACT = (1 << 2),
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GPU_MATFLAG_SSS = (1 << 3),
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GPU_MATFLAG_BARYCENTRIC = (1 << 4),
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} eGPUMatFlag;
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typedef struct GPUNodeStack {
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eGPUType type;
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float vec[4];
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struct GPUNodeLink *link;
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bool hasinput;
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bool hasoutput;
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short sockettype;
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bool end;
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} GPUNodeStack;
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typedef enum eGPUMaterialStatus {
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GPU_MAT_FAILED = 0,
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GPU_MAT_QUEUED,
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GPU_MAT_SUCCESS,
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} eGPUMaterialStatus;
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typedef enum eGPUVolumeDefaultValue {
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GPU_VOLUME_DEFAULT_0,
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GPU_VOLUME_DEFAULT_1,
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} eGPUVolumeDefaultValue;
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typedef void (*GPUMaterialEvalCallbackFn)(GPUMaterial *mat,
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int options,
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const char **vert_code,
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const char **geom_code,
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const char **frag_lib,
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const char **defines);
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GPUNodeLink *GPU_constant(const float *num);
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GPUNodeLink *GPU_uniform(const float *num);
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GPUNodeLink *GPU_attribute(GPUMaterial *mat, CustomDataType type, const char *name);
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GPUNodeLink *GPU_uniform_attribute(GPUMaterial *mat, const char *name, bool use_dupli);
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GPUNodeLink *GPU_image(GPUMaterial *mat,
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struct Image *ima,
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struct ImageUser *iuser,
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eGPUSamplerState sampler_state);
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GPUNodeLink *GPU_image_tiled(GPUMaterial *mat,
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struct Image *ima,
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struct ImageUser *iuser,
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eGPUSamplerState sampler_state);
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GPUNodeLink *GPU_image_tiled_mapping(GPUMaterial *mat, struct Image *ima, struct ImageUser *iuser);
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GPUNodeLink *GPU_color_band(GPUMaterial *mat, int size, float *pixels, float *row);
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GPUNodeLink *GPU_volume_grid(GPUMaterial *mat,
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const char *name,
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eGPUVolumeDefaultValue default_value);
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GPUNodeLink *GPU_builtin(eGPUBuiltin builtin);
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bool GPU_link(GPUMaterial *mat, const char *name, ...);
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bool GPU_stack_link(GPUMaterial *mat,
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struct bNode *node,
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const char *name,
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GPUNodeStack *in,
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GPUNodeStack *out,
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...);
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GPUNodeLink *GPU_uniformbuf_link_out(struct GPUMaterial *mat,
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struct bNode *node,
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struct GPUNodeStack *stack,
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const int index);
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void GPU_material_output_link(GPUMaterial *material, GPUNodeLink *link);
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void GPU_material_sss_profile_create(GPUMaterial *material,
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float radii[3],
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const short *falloff_type,
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const float *sharpness);
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struct GPUUniformBuf *GPU_material_sss_profile_get(GPUMaterial *material,
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int sample_len,
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struct GPUTexture **tex_profile);
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/* High level functions to create and use GPU materials */
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GPUMaterial *GPU_material_from_nodetree_find(struct ListBase *gpumaterials,
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const void *engine_type,
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int options);
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GPUMaterial *GPU_material_from_nodetree(struct Scene *scene,
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struct Material *ma,
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struct bNodeTree *ntree,
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struct ListBase *gpumaterials,
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const void *engine_type,
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const int options,
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const bool is_volume_shader,
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const char *vert_code,
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const char *geom_code,
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const char *frag_lib,
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const char *defines,
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const char *name,
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GPUMaterialEvalCallbackFn callback);
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void GPU_material_compile(GPUMaterial *mat);
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void GPU_material_free(struct ListBase *gpumaterial);
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void GPU_materials_free(struct Main *bmain);
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struct Scene *GPU_material_scene(GPUMaterial *material);
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struct GPUPass *GPU_material_get_pass(GPUMaterial *material);
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struct GPUShader *GPU_material_get_shader(GPUMaterial *material);
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struct Material *GPU_material_get_material(GPUMaterial *material);
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eGPUMaterialStatus GPU_material_status(GPUMaterial *mat);
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struct GPUUniformBuf *GPU_material_uniform_buffer_get(GPUMaterial *material);
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void GPU_material_uniform_buffer_create(GPUMaterial *material, ListBase *inputs);
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struct GPUUniformBuf *GPU_material_create_sss_profile_ubo(void);
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bool GPU_material_has_surface_output(GPUMaterial *mat);
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bool GPU_material_has_volume_output(GPUMaterial *mat);
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bool GPU_material_is_volume_shader(GPUMaterial *mat);
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void GPU_material_flag_set(GPUMaterial *mat, eGPUMatFlag flag);
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bool GPU_material_flag_get(GPUMaterial *mat, eGPUMatFlag flag);
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void GPU_pass_cache_init(void);
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void GPU_pass_cache_garbage_collect(void);
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void GPU_pass_cache_free(void);
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/* Requested Material Attributes and Textures */
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typedef struct GPUMaterialAttribute {
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struct GPUMaterialAttribute *next, *prev;
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int type; /* CustomDataType */
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char name[64]; /* MAX_CUSTOMDATA_LAYER_NAME */
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eGPUType gputype;
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int id;
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int users;
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} GPUMaterialAttribute;
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typedef struct GPUMaterialTexture {
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struct GPUMaterialTexture *next, *prev;
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struct Image *ima;
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struct ImageUser *iuser;
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struct GPUTexture **colorband;
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char sampler_name[32]; /* Name of sampler in GLSL. */
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char tiled_mapping_name[32]; /* Name of tile mapping sampler in GLSL. */
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int users;
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int sampler_state; /* eGPUSamplerState */
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} GPUMaterialTexture;
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typedef struct GPUMaterialVolumeGrid {
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struct GPUMaterialVolumeGrid *next, *prev;
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char *name;
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eGPUVolumeDefaultValue default_value;
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char sampler_name[32]; /* Name of sampler in GLSL. */
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char transform_name[32]; /* Name of 4x4 matrix in GLSL. */
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int users;
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} GPUMaterialVolumeGrid;
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ListBase GPU_material_attributes(GPUMaterial *material);
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ListBase GPU_material_textures(GPUMaterial *material);
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ListBase GPU_material_volume_grids(GPUMaterial *material);
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typedef struct GPUUniformAttr {
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struct GPUUniformAttr *next, *prev;
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/* Meaningful part of the attribute set key. */
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char name[64]; /* MAX_CUSTOMDATA_LAYER_NAME */
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bool use_dupli;
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/* Helper fields used by code generation. */
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short id;
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int users;
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} GPUUniformAttr;
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typedef struct GPUUniformAttrList {
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ListBase list; /* GPUUniformAttr */
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/* List length and hash code precomputed for fast lookup and comparison. */
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unsigned int count, hash_code;
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} GPUUniformAttrList;
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GPUUniformAttrList *GPU_material_uniform_attributes(GPUMaterial *material);
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struct GHash *GPU_uniform_attr_list_hash_new(const char *info);
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void GPU_uniform_attr_list_copy(GPUUniformAttrList *dest, GPUUniformAttrList *src);
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void GPU_uniform_attr_list_free(GPUUniformAttrList *set);
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#ifdef __cplusplus
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}
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#endif
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