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blender-archive/intern/cycles/blender/blender_texture.h

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Cycles: Point density texture support This commit implements point density texture for Cycles shading nodes. It's done via creating voxel texture at shader compilation time, Not totally memory efficient, but avoids adding sampling code to kernel (which keeps render time as low as possible), In the future this will be compensated by using OpenVDB for more efficient storage of sparse volume data. Sampling of the voxel texture is happening at blender side and the same code is used as for Blender Internal's renderer. This texture is controlled by only object, particle system and radius. Linear falloff is used and there's no turbulence. This is because falloff is expected to happen using Curve Mapping node. Turbulence will be done as a distortion on the input coordinate. It's already possible to fake it using nose textures and in the future we can add more proper turbulence distortion node, which then could also be used for 2D texture mapping. Particle color support is done by Lukas, thanks!
2015-07-18 22:36:09 +02:00
/*
* 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.
*/
#ifndef __BLENDER_TEXTURE_H__
#define __BLENDER_TEXTURE_H__
#include <stdlib.h>
Cycles: Make all #include statements relative to cycles source directory The idea is to make include statements more explicit and obvious where the file is coming from, additionally reducing chance of wrong header being picked up. For example, it was not obvious whether bvh.h was refferring to builder or traversal, whenter node.h is a generic graph node or a shader node and cases like that. Surely this might look obvious for the active developers, but after some time of not touching the code it becomes less obvious where file is coming from. This was briefly mentioned in T50824 and seems @brecht is fine with such explicitness, but need to agree with all active developers before committing this. Please note that this patch is lacking changes related on GPU/OpenCL support. This will be solved if/when we all agree this is a good idea to move forward. Reviewers: brecht, lukasstockner97, maiself, nirved, dingto, juicyfruit, swerner Reviewed By: lukasstockner97, maiself, nirved, dingto Subscribers: brecht Differential Revision: https://developer.blender.org/D2586
2017-03-28 20:39:14 +02:00
#include "blender/blender_sync.h"
Cycles: Point density texture support This commit implements point density texture for Cycles shading nodes. It's done via creating voxel texture at shader compilation time, Not totally memory efficient, but avoids adding sampling code to kernel (which keeps render time as low as possible), In the future this will be compensated by using OpenVDB for more efficient storage of sparse volume data. Sampling of the voxel texture is happening at blender side and the same code is used as for Blender Internal's renderer. This texture is controlled by only object, particle system and radius. Linear falloff is used and there's no turbulence. This is because falloff is expected to happen using Curve Mapping node. Turbulence will be done as a distortion on the input coordinate. It's already possible to fake it using nose textures and in the future we can add more proper turbulence distortion node, which then could also be used for 2D texture mapping. Particle color support is done by Lukas, thanks!
2015-07-18 22:36:09 +02:00
CCL_NAMESPACE_BEGIN
Point cache: Pass EvaluationContext for all the related functions Now the only missing bit seems to be in Cycles to pass depsgraph to builtin_image_float_pixels(). Ideally we could get evaluation context instead of using depsgraph + settings. But for the other rna EvaluationContext functions this is how we are doing. Reviewers: sergey, brecht Differential Revision: https://developer.blender.org/D3087
2018-02-28 13:54:00 -03:00
void point_density_texture_space(BL::Depsgraph& b_depsgraph,
Cycles: Pass Blender's C++ RNA structures by reference This way we avoid passing structures which could be up to few hundred bytes by value to the utility functions. Ideally we'll also have to add `const` qualifier in majority of the calls, but C++ RNA does not allow us to do that because it does not know if some function modifies contents or not.
2016-01-30 14:18:29 +01:00
BL::ShaderNodeTexPointDensity& b_point_density_node,
Cycles: Point density texture support This commit implements point density texture for Cycles shading nodes. It's done via creating voxel texture at shader compilation time, Not totally memory efficient, but avoids adding sampling code to kernel (which keeps render time as low as possible), In the future this will be compensated by using OpenVDB for more efficient storage of sparse volume data. Sampling of the voxel texture is happening at blender side and the same code is used as for Blender Internal's renderer. This texture is controlled by only object, particle system and radius. Linear falloff is used and there's no turbulence. This is because falloff is expected to happen using Curve Mapping node. Turbulence will be done as a distortion on the input coordinate. It's already possible to fake it using nose textures and in the future we can add more proper turbulence distortion node, which then could also be used for 2D texture mapping. Particle color support is done by Lukas, thanks!
2015-07-18 22:36:09 +02:00
float3& loc,
float3& size);
CCL_NAMESPACE_END
#endif /* __BLENDER_TEXTURE_H__ */
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