forked from bartvdbraak/blender
0579eaae1f
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
160 lines
4.4 KiB
C
160 lines
4.4 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* Constant Globals */
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#ifndef __KERNEL_GLOBALS_H__
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#define __KERNEL_GLOBALS_H__
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CCL_NAMESPACE_BEGIN
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/* On the CPU, we pass along the struct KernelGlobals to nearly everywhere in
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* the kernel, to access constant data. These are all stored as "textures", but
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* these are really just standard arrays. We can't use actually globals because
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* multiple renders may be running inside the same process. */
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#ifdef __KERNEL_CPU__
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# ifdef __OSL__
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struct OSLGlobals;
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struct OSLThreadData;
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struct OSLShadingSystem;
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# endif
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struct Intersection;
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struct VolumeStep;
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typedef struct KernelGlobals {
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texture_image_uchar4 texture_byte4_images[TEX_NUM_BYTE4_CPU];
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texture_image_float4 texture_float4_images[TEX_NUM_FLOAT4_CPU];
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texture_image_half4 texture_half4_images[TEX_NUM_HALF4_CPU];
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texture_image_float texture_float_images[TEX_NUM_FLOAT_CPU];
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texture_image_uchar texture_byte_images[TEX_NUM_BYTE_CPU];
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texture_image_half texture_half_images[TEX_NUM_HALF_CPU];
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# define KERNEL_TEX(type, ttype, name) ttype name;
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# define KERNEL_IMAGE_TEX(type, ttype, name)
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# include "kernel/kernel_textures.h"
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KernelData __data;
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# ifdef __OSL__
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/* On the CPU, we also have the OSL globals here. Most data structures are shared
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* with SVM, the difference is in the shaders and object/mesh attributes. */
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OSLGlobals *osl;
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OSLShadingSystem *osl_ss;
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OSLThreadData *osl_tdata;
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# endif
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/* **** Run-time data **** */
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/* Heap-allocated storage for transparent shadows intersections. */
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Intersection *transparent_shadow_intersections;
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/* Storage for decoupled volume steps. */
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VolumeStep *decoupled_volume_steps[2];
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int decoupled_volume_steps_index;
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/* split kernel */
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SplitData split_data;
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SplitParams split_param_data;
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int2 global_size;
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int2 global_id;
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} KernelGlobals;
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#endif /* __KERNEL_CPU__ */
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/* For CUDA, constant memory textures must be globals, so we can't put them
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* into a struct. As a result we don't actually use this struct and use actual
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* globals and simply pass along a NULL pointer everywhere, which we hope gets
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* optimized out. */
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#ifdef __KERNEL_CUDA__
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__constant__ KernelData __data;
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typedef struct KernelGlobals {
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/* NOTE: Keep the size in sync with SHADOW_STACK_MAX_HITS. */
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Intersection hits_stack[64];
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} KernelGlobals;
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# ifdef __KERNEL_CUDA_TEX_STORAGE__
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# define KERNEL_TEX(type, ttype, name) ttype name;
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# else
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# define KERNEL_TEX(type, ttype, name) const __constant__ __device__ type *name;
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# endif
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# define KERNEL_IMAGE_TEX(type, ttype, name) ttype name;
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# include "kernel/kernel_textures.h"
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#endif /* __KERNEL_CUDA__ */
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/* OpenCL */
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#ifdef __KERNEL_OPENCL__
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typedef ccl_addr_space struct KernelGlobals {
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ccl_constant KernelData *data;
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# define KERNEL_TEX(type, ttype, name) \
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ccl_global type *name;
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# include "kernel/kernel_textures.h"
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# ifdef __SPLIT_KERNEL__
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SplitData split_data;
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SplitParams split_param_data;
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# endif
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} KernelGlobals;
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#endif /* __KERNEL_OPENCL__ */
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/* Interpolated lookup table access */
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ccl_device float lookup_table_read(KernelGlobals *kg, float x, int offset, int size)
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{
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x = saturate(x)*(size-1);
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int index = min(float_to_int(x), size-1);
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int nindex = min(index+1, size-1);
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float t = x - index;
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float data0 = kernel_tex_fetch(__lookup_table, index + offset);
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if(t == 0.0f)
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return data0;
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float data1 = kernel_tex_fetch(__lookup_table, nindex + offset);
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return (1.0f - t)*data0 + t*data1;
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}
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ccl_device float lookup_table_read_2D(KernelGlobals *kg, float x, float y, int offset, int xsize, int ysize)
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{
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y = saturate(y)*(ysize-1);
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int index = min(float_to_int(y), ysize-1);
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int nindex = min(index+1, ysize-1);
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float t = y - index;
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float data0 = lookup_table_read(kg, x, offset + xsize*index, xsize);
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if(t == 0.0f)
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return data0;
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float data1 = lookup_table_read(kg, x, offset + xsize*nindex, xsize);
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return (1.0f - t)*data0 + t*data1;
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}
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CCL_NAMESPACE_END
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#endif /* __KERNEL_GLOBALS_H__ */
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