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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "workbench_private.hh"
#include "BLI_hash.h"
namespace blender::workbench {
Material::Material() = default;
Material::Material(float3 color)
{
base_color = color;
packed_data = Material::pack_data(0.0f, 0.4f, 1.0f);
}
Material::Material(::Object &ob, bool random)
{
if (random) {
uint hash = BLI_ghashutil_strhash_p_murmur(ob.id.name);
if (ob.id.lib) {
hash = (hash * 13) ^ BLI_ghashutil_strhash_p_murmur(ob.id.lib->filepath);
}
float3 hsv = float3(BLI_hash_int_01(hash), 0.5f, 0.8f);
hsv_to_rgb_v(hsv, base_color);
}
else {
base_color = ob.color;
}
packed_data = Material::pack_data(0.0f, 0.4f, ob.color[3]);
}
Material::Material(::Material &mat)
{
base_color = &mat.r;
packed_data = Material::pack_data(mat.metallic, mat.roughness, mat.a);
}
uint32_t Material::pack_data(float metallic, float roughness, float alpha)
{
/* Remap to Disney roughness. */
roughness = sqrtf(roughness);
uint32_t packed_roughness = unit_float_to_uchar_clamp(roughness);
uint32_t packed_metallic = unit_float_to_uchar_clamp(metallic);
uint32_t packed_alpha = unit_float_to_uchar_clamp(alpha);
return (packed_alpha << 16u) | (packed_roughness << 8u) | packed_metallic;
}
} // namespace blender::workbench
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