forked from bartvdbraak/blender
4d00e95ee3
Textures in 16 bit integer format are sometimes used for displacement, bump and normal maps and can be exported by tools like Substance Painter. Without this patch, Cycles would promote those textures to single precision floating point, causing them to take up twice as much memory as needed. Reviewers: #cycles, brecht, sergey Reviewed By: #cycles, brecht, sergey Subscribers: sergey, dingto, #cycles Tags: #cycles Differential Revision: https://developer.blender.org/D3523
93 lines
2.5 KiB
C
93 lines
2.5 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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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_NUM_TYPES
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} ImageDataType;
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#define IMAGE_DATA_TYPE_SHIFT 3
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#define IMAGE_DATA_TYPE_MASK 0x7
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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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/* 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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} TextureInfo;
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CCL_NAMESPACE_END
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#endif /* __UTIL_TEXTURE_H__ */
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