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Workbench: Xray: Lower hairs opacity

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Since hairs are very likely to owerflow the weight buffer, we divide their
alpha value by 3.

This might become a particle system setting if needed.
This commit is contained in:
Clément Foucault
2018-06-10 15:46:10 +02:00
parent 95894421cb
commit 15862e1990
1 changed files with 4 additions and 1 deletions
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5
source/blender/draw/engines/workbench/workbench_forward.c
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@@ -420,7 +420,10 @@ static void workbench_forward_cache_populate_particles(WORKBENCH_Data *vedata, O
workbench_material_set_normal_world_matrix(shgrp, wpd, e_data.normal_world_matrix);
DRW_shgroup_uniform_block(shgrp, "world_block", wpd->world_ubo);
DRW_shgroup_uniform_block(shgrp, "material_block", material->material_ubo);
DRW_shgroup_uniform_float(shgrp, "alpha", &wpd->shading.xray_alpha, 1);
/* Hairs have lots of layer and can rapidly become the most prominent surface.
* So lower their alpha artificially. */
float hair_alpha = wpd->shading.xray_alpha * 0.33f;
DRW_shgroup_uniform_float_copy(shgrp, "alpha", hair_alpha);
if (image) {
GPUTexture *tex = GPU_texture_from_blender(image, NULL, GL_TEXTURE_2D, false, false, false);
DRW_shgroup_uniform_texture(shgrp, "image", tex);