6a88f83d67
Goal is to add the length attribute to the Hair Info node, for better control over color gradients or similar along the hair. Reviewed By: #eevee_viewport, brecht Differential Revision: https://developer.blender.org/D10481
113 lines
3.4 KiB
C++
113 lines
3.4 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) 2017 by Blender Foundation.
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* All rights reserved.
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*/
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/** \file
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* \ingroup draw
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*/
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_LAYER_NAME_CT 4 /* u0123456789, u, au, a0123456789 */
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#define MAX_LAYER_NAME_LEN (GPU_MAX_SAFE_ATTR_NAME + 2)
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#define MAX_THICKRES 2 /* see eHairType */
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#define MAX_HAIR_SUBDIV 4 /* see hair_subdiv rna */
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typedef enum ParticleRefineShader {
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PART_REFINE_CATMULL_ROM = 0,
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PART_REFINE_MAX_SHADER,
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} ParticleRefineShader;
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struct ModifierData;
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struct Object;
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struct ParticleHairCache;
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struct ParticleSystem;
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typedef struct ParticleHairFinalCache {
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/* Output of the subdivision stage: vertex buff sized to subdiv level. */
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GPUVertBuf *proc_buf;
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GPUTexture *proc_tex;
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/* Just contains a huge index buffer used to draw the final hair. */
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GPUBatch *proc_hairs[MAX_THICKRES];
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int strands_res; /* points per hair, at least 2 */
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} ParticleHairFinalCache;
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typedef struct ParticleHairCache {
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GPUVertBuf *pos;
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GPUIndexBuf *indices;
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GPUBatch *hairs;
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/* Hair Procedural display: Interpolation is done on the GPU. */
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GPUVertBuf *proc_point_buf; /* Input control points */
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GPUTexture *point_tex;
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/** Infos of control points strands (segment count and base index) */
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GPUVertBuf *proc_strand_buf;
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GPUTexture *strand_tex;
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/* Hair Length */
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GPUVertBuf *proc_length_buf;
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GPUTexture *length_tex;
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GPUVertBuf *proc_strand_seg_buf;
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GPUTexture *strand_seg_tex;
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GPUVertBuf *proc_uv_buf[MAX_MTFACE];
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GPUTexture *uv_tex[MAX_MTFACE];
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char uv_layer_names[MAX_MTFACE][MAX_LAYER_NAME_CT][MAX_LAYER_NAME_LEN];
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GPUVertBuf *proc_col_buf[MAX_MCOL];
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GPUTexture *col_tex[MAX_MCOL];
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char col_layer_names[MAX_MCOL][MAX_LAYER_NAME_CT][MAX_LAYER_NAME_LEN];
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int num_uv_layers;
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int num_col_layers;
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ParticleHairFinalCache final[MAX_HAIR_SUBDIV];
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int strands_len;
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int elems_len;
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int point_len;
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} ParticleHairCache;
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void particle_batch_cache_clear_hair(struct ParticleHairCache *hair_cache);
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bool particles_ensure_procedural_data(struct Object *object,
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struct ParticleSystem *psys,
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struct ModifierData *md,
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struct ParticleHairCache **r_hair_cache,
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struct GPUMaterial *gpu_material,
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int subdiv,
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int thickness_res);
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bool hair_ensure_procedural_data(struct Object *object,
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struct ParticleHairCache **r_hair_cache,
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struct GPUMaterial *gpu_material,
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int subdiv,
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int thickness_res);
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#ifdef __cplusplus
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}
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#endif
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