blender/intern/cycles/render/film.h
Lukas Stockner 8dea06565f Cycles: Add Blackman-Harris filter, fix Gaussian filter
This commit adds the Blackman-Harris windows function as a pixel filter to Cycles. On some cases, such as wireframes or high-frequency textures,
Blackman-Harris can give subtle but noticable improvements over the Gaussian window.
Also, the gaussian window was truncated too early, which degraded quality a bit, therefore the evaluation region is now three times as wide.
To avoid artifacts caused by the wider curve, the filter table size is increased to 1024.

Reviewers: #cycles

Differential Revision: https://developer.blender.org/D1453
2015-11-18 20:50:06 +01:00

84 lines
1.8 KiB
C++

/*
* Copyright 2011-2013 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 __FILM_H__
#define __FILM_H__
#include "util_string.h"
#include "util_vector.h"
#include "kernel_types.h"
CCL_NAMESPACE_BEGIN
class Device;
class DeviceScene;
class Scene;
typedef enum FilterType {
FILTER_BOX,
FILTER_GAUSSIAN,
FILTER_BLACKMAN_HARRIS
} FilterType;
class Pass {
public:
PassType type;
int components;
bool filter;
bool exposure;
PassType divide_type;
static void add(PassType type, vector<Pass>& passes);
static bool equals(const vector<Pass>& A, const vector<Pass>& B);
static bool contains(const vector<Pass>& passes, PassType);
};
class Film {
public:
float exposure;
vector<Pass> passes;
float pass_alpha_threshold;
FilterType filter_type;
float filter_width;
size_t filter_table_offset;
float mist_start;
float mist_depth;
float mist_falloff;
bool use_light_visibility;
bool use_sample_clamp;
bool need_update;
Film();
~Film();
void device_update(Device *device, DeviceScene *dscene, Scene *scene);
void device_free(Device *device, DeviceScene *dscene, Scene *scene);
bool modified(const Film& film);
void tag_passes_update(Scene *scene, const vector<Pass>& passes_);
void tag_update(Scene *scene);
};
CCL_NAMESPACE_END
#endif /* __FILM_H__ */