forked from bartvdbraak/blender
5873301257
By default lighting from the world is computed solely with indirect light sampling. However for more complex environment maps this can be too noisy, as sampling the BSDF may not easily find the highlights in the environment map image. By enabling this option, the world background will be sampled as a lamp, with lighter parts automatically given more samples. Map Resolution specifies the size of the importance map (res x res). Before rendering starts, an importance map is generated by "baking" a grayscale image from the world shader. This will then be used to determine which parts of the background are light and so should receive more samples than darker parts. Higher resolutions will result in more accurate sampling but take more setup time and memory. Patch by Mike Farnsworth, thanks!
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __KERNEL_COMPAT_CUDA_H__
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#define __KERNEL_COMPAT_CUDA_H__
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#define __KERNEL_GPU__
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#define __KERNEL_CUDA__
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#define CCL_NAMESPACE_BEGIN
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#define CCL_NAMESPACE_END
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#include <cuda.h>
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#include <float.h>
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#include "util_types.h"
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/* Qualifier wrappers for different names on different devices */
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#define __device __device__ __inline__
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#define __device_inline __device__ __inline__
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#define __device_noinline __device__ __noinline__
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#define __global
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#define __shared __shared__
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#define __constant
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/* No assert supported for CUDA */
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#define kernel_assert(cond)
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/* Textures */
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typedef texture<float4, 1> texture_float4;
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typedef texture<float2, 1> texture_float2;
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typedef texture<float, 1> texture_float;
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typedef texture<uint, 1> texture_uint;
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typedef texture<int, 1> texture_int;
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typedef texture<uint4, 1> texture_uint4;
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typedef texture<float4, 2> texture_image_float4;
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typedef texture<uchar4, 2, cudaReadModeNormalizedFloat> texture_image_uchar4;
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/* Macros to handle different memory storage on different devices */
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#define kernel_tex_fetch(t, index) tex1Dfetch(t, index)
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#define kernel_tex_interp(t, x, size) tex1D(t, x)
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#define kernel_tex_image_interp(t, x, y) tex2D(t, x, y)
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#define kernel_data __data
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#endif /* __KERNEL_COMPAT_CUDA_H__ */
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