Brecht Van Lommel
7ad802cf3a
Cycles now uses the color space on the image datablock, and uses OpenColorIO to convert to scene linear as needed. Byte images do not take extra memory, they are compressed in scene linear + sRGB transfer function which in common cases is a no-op. Eevee and workbench were changed to work similar. Float images are stored as scene linear. Byte images are compressed as scene linear + sRGB and stored in a GL_SRGB8_ALPHA8 texture. From the GLSL shader side this means they are read as scene linear, simplifying the code and taking advantage of hardware support. Further, OpenGL image textures are now all stored with premultiplied alpha. Eevee texture sampling looks a little different now because interpolation happens premultiplied and in scene linear space. Overlays and grease pencil work in sRGB space so those now have an extra conversion to sRGB after reading from image textures. This is not particularly elegant but as long as engines use different conventions, one or the other needs to do conversion. This change breaks compatibility for cases where multiple image texture nodes were using the same image with different color space node settings. However it gives more predictable behavior for baking and texture painting if save, load and image editing operations have a single color space to handle. Differential Revision: https://developer.blender.org/D4807
220 lines
6.9 KiB
C++
220 lines
6.9 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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#ifndef __GPU_MATERIAL_H__
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#define __GPU_MATERIAL_H__
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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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 GPUUniformBuffer;
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struct GPUVertAttrLayers;
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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 Object;
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struct PreviewImage;
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struct Scene;
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struct World;
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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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typedef struct GPUParticleInfo GPUParticleInfo;
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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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/* 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_TEX3D = 1003,
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GPU_SHADOW2D = 1004,
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GPU_TEXCUBE = 1005,
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/* GLSL Struct types */
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GPU_CLOSURE = 1006,
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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_OBCOLOR = (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_VOLUME_DENSITY = (1 << 16),
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GPU_VOLUME_FLAME = (1 << 17),
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GPU_VOLUME_TEMPERATURE = (1 << 18),
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GPU_BARYCENTRIC_TEXCO = (1 << 19),
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GPU_BARYCENTRIC_DIST = (1 << 20),
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GPU_WORLD_NORMAL = (1 << 21),
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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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} eGPUMatFlag;
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typedef enum eGPUBlendMode {
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GPU_BLEND_SOLID = 0,
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GPU_BLEND_ADD = 1,
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GPU_BLEND_ALPHA = 2,
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GPU_BLEND_CLIP = 4,
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GPU_BLEND_ALPHA_SORT = 8,
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GPU_BLEND_ALPHA_TO_COVERAGE = 16,
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} eGPUBlendMode;
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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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GPUNodeLink *GPU_attribute(CustomDataType type, const char *name);
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GPUNodeLink *GPU_constant(float *num);
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GPUNodeLink *GPU_uniform(float *num);
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GPUNodeLink *GPU_image(struct Image *ima, struct ImageUser *iuser);
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GPUNodeLink *GPU_color_band(GPUMaterial *mat, int size, float *pixels, float *layer);
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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_uniformbuffer_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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eGPUBuiltin GPU_get_material_builtins(GPUMaterial *material);
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void GPU_material_sss_profile_create(GPUMaterial *material,
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float radii[3],
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short *falloff_type,
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float *sharpness);
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struct GPUUniformBuffer *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 bNodeTree *ntree,
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struct ListBase *gpumaterials,
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const void *engine_type,
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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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const char *name);
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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 ListBase *GPU_material_get_inputs(GPUMaterial *material);
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eGPUMaterialStatus GPU_material_status(GPUMaterial *mat);
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struct GPUUniformBuffer *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 GPUUniformBuffer *GPU_material_create_sss_profile_ubo(void);
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void GPU_material_vertex_attrs(GPUMaterial *material, struct GPUVertAttrLayers *attrs);
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bool GPU_material_use_domain_surface(GPUMaterial *mat);
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bool GPU_material_use_domain_volume(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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#ifdef __cplusplus
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}
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#endif
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#endif /*__GPU_MATERIAL_H__*/
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