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Differential D13915 Diff 47427 source/blender/draw/intern/draw_hair.c

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source/blender/draw/intern/draw_hair.c

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static void drw_hair_particle_cache_update_compute(ParticleHairCache *cache, const int subdiv) static void drw_hair_particle_cache_update_compute(ParticleHairCache *cache, const int subdiv)
{ {
const int strands_len = cache->strands_len; const int strands_len = cache->strands_len;
const int final_points_len = cache->final[subdiv].strands_res * strands_len; const int final_points_len = cache->final[subdiv].strands_res * strands_len;
if (final_points_len > 0) { if (final_points_len > 0) {
GPUShader *shader = hair_refine_shader_get(PART_REFINE_CATMULL_ROM); GPUShader *shader = hair_refine_shader_get(PART_REFINE_CATMULL_ROM);
DRWShadingGroup *shgrp = DRW_shgroup_create(shader, g_tf_pass); DRWShadingGroup *shgrp = DRW_shgroup_create(shader, g_tf_pass);
drw_hair_particle_cache_shgrp_attach_resources(shgrp, cache, subdiv); drw_hair_particle_cache_shgrp_attach_resources(shgrp, cache, subdiv);
DRW_shgroup_vertex_buffer(shgrp, "hairPointOutputBuffer", cache->final[subdiv].proc_buf); DRW_shgroup_vertex_buffer(shgrp, "posTime", cache->final[subdiv].proc_buf);
const int max_strands_per_call = GPU_max_work_group_count(0); const int max_strands_per_call = GPU_max_work_group_count(0);
int strands_start = 0; int strands_start = 0;
while (strands_start < strands_len) { while (strands_start < strands_len) {
int batch_strands_len = MIN2(strands_len - strands_start, max_strands_per_call); int batch_strands_len = MIN2(strands_len - strands_start, max_strands_per_call);
DRWShadingGroup *subgroup = DRW_shgroup_create_sub(shgrp); DRWShadingGroup *subgroup = DRW_shgroup_create_sub(shgrp);
DRW_shgroup_uniform_int_copy(subgroup, "hairStrandOffset", strands_start); DRW_shgroup_uniform_int_copy(subgroup, "hairStrandOffset", strands_start);
DRW_shgroup_call_compute(subgroup, batch_strands_len, cache->final[subdiv].strands_res, 1); DRW_shgroup_call_compute(subgroup, batch_strands_len, cache->final[subdiv].strands_res, 1);
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