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blender-archive/intern/cycles/blender/blender_texture.cpp
Sergey Sharybin 8126b0222d Fix T47214: Keyed Particles don't render correctly when used for point density input
The issue was caused by different AABB used by Cycles and texture sampler.

Instead of trying to keep this two functions in sync we now do have an
utility call in the point density node to query the AABB.
2016-01-26 12:50:55 +01:00

60 lines
1.8 KiB
C++

/*
* Copyright 2011-2015 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "blender_texture.h"
CCL_NAMESPACE_BEGIN
namespace {
/* Point density helpers. */
void density_texture_space_invert(float3& loc,
float3& size)
{
if(size.x != 0.0f) size.x = 0.5f/size.x;
if(size.y != 0.0f) size.y = 0.5f/size.y;
if(size.z != 0.0f) size.z = 0.5f/size.z;
loc = loc*size - make_float3(0.5f, 0.5f, 0.5f);
}
} /* namespace */
void point_density_texture_space(BL::Scene b_scene,
BL::ShaderNodeTexPointDensity b_point_density_node,
int settings,
float3& loc,
float3& size)
{
BL::Object b_ob(b_point_density_node.object());
if(!b_ob) {
loc = make_float3(0.0f, 0.0f, 0.0f);
size = make_float3(0.0f, 0.0f, 0.0f);
return;
}
float3 min, max;
b_point_density_node.calc_point_density_minmax(b_scene,
settings,
&min[0],
&max[0]);
loc = (min + max) * 0.5f;
size = (max - min) * 0.5f;
density_texture_space_invert(loc, size);
}
CCL_NAMESPACE_END