Clément Foucault
80859a6cb2
This commit removes all EEVEE specific code from the `gpu_shader_material*.glsl` files. It defines a clear interface to evaluate the closure nodes leaving more flexibility to the render engine. Some of the long standing workaround are fixed: - bump mapping support is no longer duplicating a lot of node and is instead compiled into a function call. - bump rewiring to Normal socket is no longer needed as we now use a global `g_data.N` for that. Closure sampling with upstread weight eval is now supported if the engine needs it. This also makes all the material GLSL sources use `GPUSource` for better debugging experience. The `GPUFunction` parsing now happens in `GPUSource` creation. The whole `GPUCodegen` now uses the `ShaderCreateInfo` and is object type agnostic. Is has also been rewritten in C++. This patch changes a view behavior for EEVEE: - Mix shader node factor imput is now clamped. - Tangent Vector displacement behavior is now matching cycles. - The chosen BSDF used for SSR might change. - Hair shading may have very small changes on very large hairs when using hair polygon stripes. - ShaderToRGB node will remove any SSR and SSS form a shader. - SSS radius input now is no longer a scaling factor but defines an average radius. The SSS kernel "shape" (radii) are still defined by the socket default values. Appart from the listed changes no other regressions are expected.
318 lines
10 KiB
C++
318 lines
10 KiB
C++
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright 2005 Blender Foundation. All rights reserved. */
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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_image_types.h"
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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_shader.h" /* for GPUShaderCreateInfo */
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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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/* 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 eGPUMaterialFlag {
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GPU_MATFLAG_DIFFUSE = (1 << 0),
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GPU_MATFLAG_SUBSURFACE = (1 << 1),
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GPU_MATFLAG_GLOSSY = (1 << 2),
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GPU_MATFLAG_REFRACT = (1 << 3),
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GPU_MATFLAG_EMISSION = (1 << 4),
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GPU_MATFLAG_TRANSPARENT = (1 << 5),
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GPU_MATFLAG_HOLDOUT = (1 << 6),
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GPU_MATFLAG_SHADER_TO_RGBA = (1 << 7),
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GPU_MATFLAG_AO = (1 << 8),
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GPU_MATFLAG_OBJECT_INFO = (1 << 10),
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GPU_MATFLAG_AOV = (1 << 11),
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GPU_MATFLAG_BARYCENTRIC = (1 << 20),
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/* Tells the render engine the material was just compiled or updated. */
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GPU_MATFLAG_UPDATED = (1 << 29),
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/* HACK(fclem) Tells the environment texture node to not bail out if empty. */
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GPU_MATFLAG_LOOKDEV_HACK = (1 << 30),
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} eGPUMaterialFlag;
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ENUM_OPERATORS(eGPUMaterialFlag, GPU_MATFLAG_LOOKDEV_HACK);
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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_CREATED,
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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 struct GPUCodegenOutput {
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char *attr_load;
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/* Nodetree functions calls. */
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char *displacement;
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char *surface;
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char *volume;
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char *thickness;
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char *material_functions;
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GPUShaderCreateInfo *create_info;
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} GPUCodegenOutput;
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typedef void (*GPUCodegenCallbackFn)(void *thunk, GPUMaterial *mat, GPUCodegenOutput *codegen);
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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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/**
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* Create an implementation defined differential calculation of a float function.
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* The given function should return a float.
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* The result will be a vec2 containing dFdx and dFdy result of that function.
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*/
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GPUNodeLink *GPU_differentiate_float_function(const char *function_name);
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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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int index);
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void GPU_material_output_surface(GPUMaterial *material, GPUNodeLink *link);
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void GPU_material_output_volume(GPUMaterial *material, GPUNodeLink *link);
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void GPU_material_output_displacement(GPUMaterial *material, GPUNodeLink *link);
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void GPU_material_output_thickness(GPUMaterial *material, GPUNodeLink *link);
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void GPU_material_add_output_link_aov(GPUMaterial *material, GPUNodeLink *link, int hash);
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/**
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* Wrap a part of the material graph into a function. You need then need to call the function by
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* using something like #GPU_differentiate_float_function.
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* \note This replace the link by a constant to break the link with the main graph.
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* \param return_type: sub function return type. Output is cast to this type.
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* \param link: link to use as the sub function output.
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* \return the name of the generated function.
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*/
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char *GPU_material_split_sub_function(GPUMaterial *material,
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eGPUType return_type,
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GPUNodeLink **link);
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bool GPU_material_sss_profile_create(GPUMaterial *material, float radii[3]);
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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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/**
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* High level functions to create and use GPU materials.
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*/
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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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/**
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* \note Caller must use #GPU_material_from_nodetree_find to re-use existing materials,
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* This is enforced since constructing other arguments to this function may be expensive
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* so only do this when they are needed.
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*/
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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 char *name,
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uint64_t shader_uuid,
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bool is_volume_shader,
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bool is_lookdev,
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GPUCodegenCallbackFn callback,
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void *thunk);
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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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/**
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* Return can be NULL if it's a world material.
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*/
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struct Material *GPU_material_get_material(GPUMaterial *material);
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/**
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* Return true if the material compilation has not yet begin or begin.
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*/
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eGPUMaterialStatus GPU_material_status(GPUMaterial *mat);
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void GPU_material_status_set(GPUMaterial *mat, eGPUMaterialStatus status);
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struct GPUUniformBuf *GPU_material_uniform_buffer_get(GPUMaterial *material);
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/**
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* Create dynamic UBO from parameters
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*
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* \param inputs: Items are #LinkData, data is #GPUInput (`BLI_genericNodeN(GPUInput)`).
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*/
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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_is_volume_shader(GPUMaterial *mat);
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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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void GPU_material_flag_set(GPUMaterial *mat, eGPUMaterialFlag flag);
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bool GPU_material_flag_get(const GPUMaterial *mat, eGPUMaterialFlag flag);
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eGPUMaterialFlag GPU_material_flag(const GPUMaterial *mat);
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bool GPU_material_recalc_flag_get(GPUMaterial *mat);
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uint64_t GPU_material_uuid_get(GPUMaterial *mat);
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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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bool iuser_available;
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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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