forked from bartvdbraak/blender
3df90de6c2
NanoVDB is a platform-independent sparse volume data structure that makes it possible to use OpenVDB volumes on the GPU. This patch uses it for volume rendering in Cycles, replacing the previous usage of dense 3D textures. Since it has a big impact on memory usage and performance and changes the OpenVDB branch used for the rest of Blender as well, this is not enabled by default yet, which will happen only after 2.82 was branched off. To enable it, build both dependencies and Blender itself with the "WITH_NANOVDB" CMake option. Reviewed By: brecht Differential Revision: https://developer.blender.org/D8794
114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/*
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* Copyright 2011-2016 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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#ifndef __UTIL_TEXTURE_H__
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#define __UTIL_TEXTURE_H__
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#include "util_transform.h"
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CCL_NAMESPACE_BEGIN
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/* Texture limits on devices. */
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#define TEX_NUM_MAX (INT_MAX >> 4)
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/* Color to use when textures are not found. */
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#define TEX_IMAGE_MISSING_R 1
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#define TEX_IMAGE_MISSING_G 0
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#define TEX_IMAGE_MISSING_B 1
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#define TEX_IMAGE_MISSING_A 1
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/* Texture type. */
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#define kernel_tex_type(tex) (tex & IMAGE_DATA_TYPE_MASK)
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/* Interpolation types for textures
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* cuda also use texture space to store other objects */
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typedef enum InterpolationType {
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INTERPOLATION_NONE = -1,
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INTERPOLATION_LINEAR = 0,
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INTERPOLATION_CLOSEST = 1,
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INTERPOLATION_CUBIC = 2,
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INTERPOLATION_SMART = 3,
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INTERPOLATION_NUM_TYPES,
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} InterpolationType;
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/* Texture types
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* Since we store the type in the lower bits of a flat index,
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* the shift and bit mask constant below need to be kept in sync. */
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typedef enum ImageDataType {
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IMAGE_DATA_TYPE_FLOAT4 = 0,
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IMAGE_DATA_TYPE_BYTE4 = 1,
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IMAGE_DATA_TYPE_HALF4 = 2,
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IMAGE_DATA_TYPE_FLOAT = 3,
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IMAGE_DATA_TYPE_BYTE = 4,
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IMAGE_DATA_TYPE_HALF = 5,
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IMAGE_DATA_TYPE_USHORT4 = 6,
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IMAGE_DATA_TYPE_USHORT = 7,
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IMAGE_DATA_TYPE_NANOVDB_FLOAT = 8,
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IMAGE_DATA_TYPE_NANOVDB_FLOAT3 = 9,
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IMAGE_DATA_NUM_TYPES
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} ImageDataType;
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/* Alpha types
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* How to treat alpha in images. */
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typedef enum ImageAlphaType {
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IMAGE_ALPHA_UNASSOCIATED = 0,
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IMAGE_ALPHA_ASSOCIATED = 1,
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IMAGE_ALPHA_CHANNEL_PACKED = 2,
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IMAGE_ALPHA_IGNORE = 3,
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IMAGE_ALPHA_AUTO = 4,
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IMAGE_ALPHA_NUM_TYPES,
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} ImageAlphaType;
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#define IMAGE_DATA_TYPE_SHIFT 4
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#define IMAGE_DATA_TYPE_MASK 0xF
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/* Extension types for textures.
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*
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* Defines how the image is extrapolated past its original bounds. */
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typedef enum ExtensionType {
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/* Cause the image to repeat horizontally and vertically. */
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EXTENSION_REPEAT = 0,
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/* Extend by repeating edge pixels of the image. */
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EXTENSION_EXTEND = 1,
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/* Clip to image size and set exterior pixels as transparent. */
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EXTENSION_CLIP = 2,
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EXTENSION_NUM_TYPES,
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} ExtensionType;
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typedef struct TextureInfo {
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/* Pointer, offset or texture depending on device. */
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uint64_t data;
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/* Data Type */
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uint data_type;
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/* Buffer number for OpenCL. */
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uint cl_buffer;
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/* Interpolation and extension type. */
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uint interpolation, extension;
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/* Dimensions. */
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uint width, height, depth;
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/* Transform for 3D textures. */
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uint use_transform_3d;
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Transform transform_3d;
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} TextureInfo;
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CCL_NAMESPACE_END
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#endif /* __UTIL_TEXTURE_H__ */
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