620 lines
25 KiB
C++
620 lines
25 KiB
C++
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/* The Khronos Data Format Specification (version 1.3) */
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/*
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** Copyright 2015-2020 The Khronos Group Inc.
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** SPDX-License-Identifier: Apache-2.0
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*/
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/* This header defines a structure that can describe the layout of image
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formats in memory. This means that the data format is transparent to
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the application, and the expectation is that this should be used when
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the layout is defined external to the API. Many Khronos APIs deliberately
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keep the internal layout of images opaque, to allow proprietary layouts
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and optimisations. This structure is not appropriate for describing
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opaque layouts. */
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/* We stick to standard C89 constructs for simplicity and portability. */
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#ifndef _KHR_DATA_FORMAT_H_
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#define _KHR_DATA_FORMAT_H_
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/* Accessors */
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typedef enum _khr_word_e {
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KHR_DF_WORD_VENDORID = 0U,
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KHR_DF_WORD_DESCRIPTORTYPE = 0U,
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KHR_DF_WORD_VERSIONNUMBER = 1U,
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KHR_DF_WORD_DESCRIPTORBLOCKSIZE = 1U,
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KHR_DF_WORD_MODEL = 2U,
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KHR_DF_WORD_PRIMARIES = 2U,
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KHR_DF_WORD_TRANSFER = 2U,
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KHR_DF_WORD_FLAGS = 2U,
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KHR_DF_WORD_TEXELBLOCKDIMENSION0 = 3U,
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KHR_DF_WORD_TEXELBLOCKDIMENSION1 = 3U,
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KHR_DF_WORD_TEXELBLOCKDIMENSION2 = 3U,
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KHR_DF_WORD_TEXELBLOCKDIMENSION3 = 3U,
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KHR_DF_WORD_BYTESPLANE0 = 4U,
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KHR_DF_WORD_BYTESPLANE1 = 4U,
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KHR_DF_WORD_BYTESPLANE2 = 4U,
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KHR_DF_WORD_BYTESPLANE3 = 4U,
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KHR_DF_WORD_BYTESPLANE4 = 5U,
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KHR_DF_WORD_BYTESPLANE5 = 5U,
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KHR_DF_WORD_BYTESPLANE6 = 5U,
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KHR_DF_WORD_BYTESPLANE7 = 5U,
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KHR_DF_WORD_SAMPLESTART = 6U,
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KHR_DF_WORD_SAMPLEWORDS = 4U
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} khr_df_word_e;
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typedef enum _khr_df_shift_e {
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KHR_DF_SHIFT_VENDORID = 0U,
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KHR_DF_SHIFT_DESCRIPTORTYPE = 17U,
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KHR_DF_SHIFT_VERSIONNUMBER = 0U,
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KHR_DF_SHIFT_DESCRIPTORBLOCKSIZE = 16U,
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KHR_DF_SHIFT_MODEL = 0U,
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KHR_DF_SHIFT_PRIMARIES = 8U,
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KHR_DF_SHIFT_TRANSFER = 16U,
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KHR_DF_SHIFT_FLAGS = 24U,
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KHR_DF_SHIFT_TEXELBLOCKDIMENSION0 = 0U,
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KHR_DF_SHIFT_TEXELBLOCKDIMENSION1 = 8U,
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KHR_DF_SHIFT_TEXELBLOCKDIMENSION2 = 16U,
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KHR_DF_SHIFT_TEXELBLOCKDIMENSION3 = 24U,
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KHR_DF_SHIFT_BYTESPLANE0 = 0U,
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KHR_DF_SHIFT_BYTESPLANE1 = 8U,
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KHR_DF_SHIFT_BYTESPLANE2 = 16U,
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KHR_DF_SHIFT_BYTESPLANE3 = 24U,
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KHR_DF_SHIFT_BYTESPLANE4 = 0U,
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KHR_DF_SHIFT_BYTESPLANE5 = 8U,
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KHR_DF_SHIFT_BYTESPLANE6 = 16U,
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KHR_DF_SHIFT_BYTESPLANE7 = 24U
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} khr_df_shift_e;
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typedef enum _khr_df_mask_e {
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KHR_DF_MASK_VENDORID = 0x1FFFFU,
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KHR_DF_MASK_DESCRIPTORTYPE = 0x7FFFU,
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KHR_DF_MASK_VERSIONNUMBER = 0xFFFFU,
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KHR_DF_MASK_DESCRIPTORBLOCKSIZE = 0xFFFFU,
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KHR_DF_MASK_MODEL = 0xFFU,
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KHR_DF_MASK_PRIMARIES = 0xFFU,
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KHR_DF_MASK_TRANSFER = 0xFFU,
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KHR_DF_MASK_FLAGS = 0xFFU,
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KHR_DF_MASK_TEXELBLOCKDIMENSION0 = 0xFFU,
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KHR_DF_MASK_TEXELBLOCKDIMENSION1 = 0xFFU,
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KHR_DF_MASK_TEXELBLOCKDIMENSION2 = 0xFFU,
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KHR_DF_MASK_TEXELBLOCKDIMENSION3 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE0 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE1 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE2 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE3 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE4 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE5 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE6 = 0xFFU,
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KHR_DF_MASK_BYTESPLANE7 = 0xFFU
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} khr_df_mask_e;
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/* Helper macro:
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Extract field X from basic descriptor block BDB */
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#define KHR_DFDVAL(BDB, X) \
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(((BDB)[KHR_DF_WORD_ ## X] >> (KHR_DF_SHIFT_ ## X)) \
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& (KHR_DF_MASK_ ## X))
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/* Helper macro:
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Set field X of basic descriptor block BDB */
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#define KHR_DFDSETVAL(BDB, X, val) \
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((BDB)[KHR_DF_WORD_ ## X] = \
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((BDB)[KHR_DF_WORD_ ## X] & \
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~((KHR_DF_MASK_ ## X) << (KHR_DF_SHIFT_ ## X))) | \
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(((val) & (KHR_DF_MASK_ ## X)) << (KHR_DF_SHIFT_ ## X)))
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/* Offsets relative to the start of a sample */
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typedef enum _khr_df_sampleword_e {
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KHR_DF_SAMPLEWORD_BITOFFSET = 0U,
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KHR_DF_SAMPLEWORD_BITLENGTH = 0U,
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KHR_DF_SAMPLEWORD_CHANNELID = 0U,
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KHR_DF_SAMPLEWORD_QUALIFIERS = 0U,
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KHR_DF_SAMPLEWORD_SAMPLEPOSITION0 = 1U,
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KHR_DF_SAMPLEWORD_SAMPLEPOSITION1 = 1U,
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KHR_DF_SAMPLEWORD_SAMPLEPOSITION2 = 1U,
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KHR_DF_SAMPLEWORD_SAMPLEPOSITION3 = 1U,
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KHR_DF_SAMPLEWORD_SAMPLEPOSITION_ALL = 1U,
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KHR_DF_SAMPLEWORD_SAMPLELOWER = 2U,
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KHR_DF_SAMPLEWORD_SAMPLEUPPER = 3U
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} khr_df_sampleword_e;
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typedef enum _khr_df_sampleshift_e {
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KHR_DF_SAMPLESHIFT_BITOFFSET = 0U,
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KHR_DF_SAMPLESHIFT_BITLENGTH = 16U,
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KHR_DF_SAMPLESHIFT_CHANNELID = 24U,
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/* N.B. Qualifiers are defined as an offset into a byte */
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KHR_DF_SAMPLESHIFT_QUALIFIERS = 24U,
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KHR_DF_SAMPLESHIFT_SAMPLEPOSITION0 = 0U,
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KHR_DF_SAMPLESHIFT_SAMPLEPOSITION1 = 8U,
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KHR_DF_SAMPLESHIFT_SAMPLEPOSITION2 = 16U,
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KHR_DF_SAMPLESHIFT_SAMPLEPOSITION3 = 24U,
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KHR_DF_SAMPLESHIFT_SAMPLEPOSITION_ALL = 0U,
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KHR_DF_SAMPLESHIFT_SAMPLELOWER = 0U,
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KHR_DF_SAMPLESHIFT_SAMPLEUPPER = 0U
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} khr_df_sampleshift_e;
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typedef enum _khr_df_samplemask_e {
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KHR_DF_SAMPLEMASK_BITOFFSET = 0xFFFFU,
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KHR_DF_SAMPLEMASK_BITLENGTH = 0xFF,
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KHR_DF_SAMPLEMASK_CHANNELID = 0xF,
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/* N.B. Qualifiers are defined as an offset into a byte */
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KHR_DF_SAMPLEMASK_QUALIFIERS = 0xF0,
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KHR_DF_SAMPLEMASK_SAMPLEPOSITION0 = 0xFF,
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KHR_DF_SAMPLEMASK_SAMPLEPOSITION1 = 0xFF,
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KHR_DF_SAMPLEMASK_SAMPLEPOSITION2 = 0xFF,
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KHR_DF_SAMPLEMASK_SAMPLEPOSITION3 = 0xFF,
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/* ISO C restricts enum values to range of int hence the
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cast. We do it verbosely instead of using -1 to ensure
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it is a 32-bit value even if int is 64 bits. */
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KHR_DF_SAMPLEMASK_SAMPLEPOSITION_ALL = (int) 0xFFFFFFFFU,
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KHR_DF_SAMPLEMASK_SAMPLELOWER = (int) 0xFFFFFFFFU,
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KHR_DF_SAMPLEMASK_SAMPLEUPPER = (int) 0xFFFFFFFFU
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} khr_df_samplemask_e;
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/* Helper macro:
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Extract field X of sample S from basic descriptor block BDB */
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#define KHR_DFDSVAL(BDB, S, X) \
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(((BDB)[KHR_DF_WORD_SAMPLESTART + \
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((S) * KHR_DF_WORD_SAMPLEWORDS) + \
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KHR_DF_SAMPLEWORD_ ## X] >> (KHR_DF_SAMPLESHIFT_ ## X)) \
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& (KHR_DF_SAMPLEMASK_ ## X))
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/* Helper macro:
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Set field X of sample S of basic descriptor block BDB */
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#define KHR_DFDSETSVAL(BDB, S, X, val) \
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((BDB)[KHR_DF_WORD_SAMPLESTART + \
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((S) * KHR_DF_WORD_SAMPLEWORDS) + \
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KHR_DF_SAMPLEWORD_ ## X] = \
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((BDB)[KHR_DF_WORD_SAMPLESTART + \
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((S) * KHR_DF_WORD_SAMPLEWORDS) + \
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KHR_DF_SAMPLEWORD_ ## X] & \
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~((uint32_t)(KHR_DF_SAMPLEMASK_ ## X) << (KHR_DF_SAMPLESHIFT_ ## X))) | \
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(((val) & (uint32_t)(KHR_DF_SAMPLEMASK_ ## X)) << (KHR_DF_SAMPLESHIFT_ ## X)))
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/* Helper macro:
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Number of samples in basic descriptor block BDB */
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#define KHR_DFDSAMPLECOUNT(BDB) \
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(((KHR_DFDVAL(BDB, DESCRIPTORBLOCKSIZE) >> 2) - \
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KHR_DF_WORD_SAMPLESTART) \
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/ KHR_DF_WORD_SAMPLEWORDS)
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/* Helper macro:
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Size in words of basic descriptor block for S samples */
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#define KHR_DFDSIZEWORDS(S) \
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(KHR_DF_WORD_SAMPLESTART + \
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(S) * KHR_DF_WORD_SAMPLEWORDS)
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/* Vendor ids */
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typedef enum _khr_df_vendorid_e {
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/* Standard Khronos descriptor */
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KHR_DF_VENDORID_KHRONOS = 0U,
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KHR_DF_VENDORID_MAX = 0x1FFFFU
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} khr_df_vendorid_e;
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/* Descriptor types */
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typedef enum _khr_df_khr_descriptortype_e {
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/* Default Khronos basic descriptor block */
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KHR_DF_KHR_DESCRIPTORTYPE_BASICFORMAT = 0U,
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/* Extension descriptor block for additional planes */
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KHR_DF_KHR_DESCRIPTORTYPE_ADDITIONAL_PLANES = 0x6001U,
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/* Extension descriptor block for additional dimensions */
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KHR_DF_KHR_DESCRIPTORTYPE_ADDITIONAL_DIMENSIONS = 0x6002U,
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/* Bit indicates modifying requires understanding this extension */
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KHR_DF_KHR_DESCRIPTORTYPE_NEEDED_FOR_WRITE_BIT = 0x2000U,
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/* Bit indicates processing requires understanding this extension */
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KHR_DF_KHR_DESCRIPTORTYPE_NEEDED_FOR_DECODE_BIT = 0x4000U,
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KHR_DF_KHR_DESCRIPTORTYPE_MAX = 0x7FFFU
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} khr_df_khr_descriptortype_e;
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/* Descriptor block version */
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typedef enum _khr_df_versionnumber_e {
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/* Standard Khronos descriptor */
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KHR_DF_VERSIONNUMBER_1_0 = 0U, /* Version 1.0 of the specification */
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KHR_DF_VERSIONNUMBER_1_1 = 0U, /* Version 1.1 did not bump the version number */
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KHR_DF_VERSIONNUMBER_1_2 = 1U, /* Version 1.2 increased the version number */
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KHR_DF_VERSIONNUMBER_1_3 = 2U, /* Version 1.3 increased the version number */
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KHR_DF_VERSIONNUMBER_LATEST = KHR_DF_VERSIONNUMBER_1_3,
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KHR_DF_VERSIONNUMBER_MAX = 0xFFFFU
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} khr_df_versionnumber_e;
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/* Model in which the color coordinate space is defined.
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There is no requirement that a color format use all the
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channel types that are defined in the color model. */
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typedef enum _khr_df_model_e {
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/* No interpretation of color channels defined */
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KHR_DF_MODEL_UNSPECIFIED = 0U,
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/* Color primaries (red, green, blue) + alpha, depth and stencil */
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KHR_DF_MODEL_RGBSDA = 1U,
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/* Color differences (Y', Cb, Cr) + alpha, depth and stencil */
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KHR_DF_MODEL_YUVSDA = 2U,
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/* Color differences (Y', I, Q) + alpha, depth and stencil */
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KHR_DF_MODEL_YIQSDA = 3U,
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/* Perceptual color (CIE L*a*b*) + alpha, depth and stencil */
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KHR_DF_MODEL_LABSDA = 4U,
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/* Subtractive colors (cyan, magenta, yellow, black) + alpha */
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KHR_DF_MODEL_CMYKA = 5U,
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/* Non-color coordinate data (X, Y, Z, W) */
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KHR_DF_MODEL_XYZW = 6U,
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/* Hue, saturation, value, hue angle on color circle, plus alpha */
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KHR_DF_MODEL_HSVA_ANG = 7U,
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/* Hue, saturation, lightness, hue angle on color circle, plus alpha */
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KHR_DF_MODEL_HSLA_ANG = 8U,
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/* Hue, saturation, value, hue on color hexagon, plus alpha */
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KHR_DF_MODEL_HSVA_HEX = 9U,
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/* Hue, saturation, lightness, hue on color hexagon, plus alpha */
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KHR_DF_MODEL_HSLA_HEX = 10U,
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/* Lightweight approximate color difference (luma, orange, green) */
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KHR_DF_MODEL_YCGCOA = 11U,
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/* ITU BT.2020 constant luminance YcCbcCrc */
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KHR_DF_MODEL_YCCBCCRC = 12U,
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/* ITU BT.2100 constant intensity ICtCp */
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KHR_DF_MODEL_ICTCP = 13U,
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/* CIE 1931 XYZ color coordinates (X, Y, Z) */
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KHR_DF_MODEL_CIEXYZ = 14U,
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/* CIE 1931 xyY color coordinates (X, Y, Y) */
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KHR_DF_MODEL_CIEXYY = 15U,
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/* Compressed formats start at 128. */
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/* These compressed formats should generally have a single sample,
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sited at the 0,0 position of the texel block. Where multiple
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channels are used to distinguish formats, these should be cosited. */
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/* Direct3D (and S3) compressed formats */
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/* Note that premultiplied status is recorded separately */
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/* DXT1 "channels" are RGB (0), Alpha (1) */
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/* DXT1/BC1 with one channel is opaque */
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/* DXT1/BC1 with a cosited alpha sample is transparent */
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KHR_DF_MODEL_DXT1A = 128U,
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KHR_DF_MODEL_BC1A = 128U,
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/* DXT2/DXT3/BC2, with explicit 4-bit alpha */
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KHR_DF_MODEL_DXT2 = 129U,
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KHR_DF_MODEL_DXT3 = 129U,
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KHR_DF_MODEL_BC2 = 129U,
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/* DXT4/DXT5/BC3, with interpolated alpha */
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KHR_DF_MODEL_DXT4 = 130U,
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KHR_DF_MODEL_DXT5 = 130U,
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KHR_DF_MODEL_BC3 = 130U,
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/* BC4 - single channel interpolated 8-bit data */
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/* (The UNORM/SNORM variation is recorded in the channel data) */
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KHR_DF_MODEL_BC4 = 131U,
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/* BC5 - two channel interpolated 8-bit data */
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/* (The UNORM/SNORM variation is recorded in the channel data) */
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KHR_DF_MODEL_BC5 = 132U,
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/* BC6H - DX11 format for 16-bit float channels */
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KHR_DF_MODEL_BC6H = 133U,
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/* BC7 - DX11 format */
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KHR_DF_MODEL_BC7 = 134U,
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/* Gap left for future desktop expansion */
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/* Mobile compressed formats follow */
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/* A format of ETC1 indicates that the format shall be decodable
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by an ETC1-compliant decoder and not rely on ETC2 features */
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KHR_DF_MODEL_ETC1 = 160U,
|
||
|
|
/* A format of ETC2 is permitted to use ETC2 encodings on top of
|
||
|
|
the baseline ETC1 specification */
|
||
|
|
/* The ETC2 format has channels "red", "green", "RGB" and "alpha",
|
||
|
|
which should be cosited samples */
|
||
|
|
/* Punch-through alpha can be distinguished from full alpha by
|
||
|
|
the plane size in bytes required for the texel block */
|
||
|
|
KHR_DF_MODEL_ETC2 = 161U,
|
||
|
|
/* Adaptive Scalable Texture Compression */
|
||
|
|
/* ASTC HDR vs LDR is determined by the float flag in the channel */
|
||
|
|
/* ASTC block size can be distinguished by texel block size */
|
||
|
|
KHR_DF_MODEL_ASTC = 162U,
|
||
|
|
/* ETC1S is a simplified subset of ETC1 */
|
||
|
|
KHR_DF_MODEL_ETC1S = 163U,
|
||
|
|
/* PowerVR Texture Compression */
|
||
|
|
KHR_DF_MODEL_PVRTC = 164U,
|
||
|
|
KHR_DF_MODEL_PVRTC2 = 165U,
|
||
|
|
KHR_DF_MODEL_UASTC = 166U,
|
||
|
|
/* Proprietary formats (ATITC, etc.) should follow */
|
||
|
|
KHR_DF_MODEL_MAX = 0xFFU
|
||
|
|
} khr_df_model_e;
|
||
|
|
|
||
|
|
/* Definition of channel names for each color model */
|
||
|
|
typedef enum _khr_df_model_channels_e {
|
||
|
|
/* Unspecified format with nominal channel numbering */
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_0 = 0U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_1 = 1U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_2 = 2U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_3 = 3U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_4 = 4U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_5 = 5U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_6 = 6U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_7 = 7U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_8 = 8U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_9 = 9U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_10 = 10U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_11 = 11U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_12 = 12U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_13 = 13U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_14 = 14U,
|
||
|
|
KHR_DF_CHANNEL_UNSPECIFIED_15 = 15U,
|
||
|
|
/* MODEL_RGBSDA - red, green, blue, stencil, depth, alpha */
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_RED = 0U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_R = 0U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_GREEN = 1U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_G = 1U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_BLUE = 2U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_B = 2U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_STENCIL = 13U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_S = 13U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_DEPTH = 14U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_D = 14U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_RGBSDA_A = 15U,
|
||
|
|
/* MODEL_YUVSDA - luma, Cb, Cr, stencil, depth, alpha */
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_Y = 0U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_CB = 1U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_U = 1U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_CR = 2U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_V = 2U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_STENCIL = 13U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_S = 13U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_DEPTH = 14U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_D = 14U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_YUVSDA_A = 15U,
|
||
|
|
/* MODEL_YIQSDA - luma, in-phase, quadrature, stencil, depth, alpha */
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_Y = 0U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_I = 1U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_Q = 2U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_STENCIL = 13U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_S = 13U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_DEPTH = 14U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_D = 14U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_YIQSDA_A = 15U,
|
||
|
|
/* MODEL_LABSDA - CIELAB/L*a*b* luma, red-green, blue-yellow, stencil, depth, alpha */
|
||
|
|
KHR_DF_CHANNEL_LABSDA_L = 0U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_A = 1U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_B = 2U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_STENCIL = 13U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_S = 13U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_DEPTH = 14U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_D = 14U,
|
||
|
|
KHR_DF_CHANNEL_LABSDA_ALPHA = 15U,
|
||
|
|
/* NOTE: KHR_DF_CHANNEL_LABSDA_A is not a synonym for alpha! */
|
||
|
|
/* MODEL_CMYKA - cyan, magenta, yellow, key/blacK, alpha */
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_CYAN = 0U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_C = 0U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_MAGENTA = 1U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_M = 1U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_YELLOW = 2U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_Y = 2U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_KEY = 3U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_BLACK = 3U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_K = 3U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_CMYKSDA_A = 15U,
|
||
|
|
/* MODEL_XYZW - coordinates x, y, z, w */
|
||
|
|
KHR_DF_CHANNEL_XYZW_X = 0U,
|
||
|
|
KHR_DF_CHANNEL_XYZW_Y = 1U,
|
||
|
|
KHR_DF_CHANNEL_XYZW_Z = 2U,
|
||
|
|
KHR_DF_CHANNEL_XYZW_W = 3U,
|
||
|
|
/* MODEL_HSVA_ANG - value (luma), saturation, hue, alpha, angular projection, conical space */
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_VALUE = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_V = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_SATURATION = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_S = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_HUE = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_H = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_ANG_A = 15U,
|
||
|
|
/* MODEL_HSLA_ANG - lightness (luma), saturation, hue, alpha, angular projection, double conical space */
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_LIGHTNESS = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_L = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_SATURATION = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_S = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_HUE = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_H = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_ANG_A = 15U,
|
||
|
|
/* MODEL_HSVA_HEX - value (luma), saturation, hue, alpha, hexagonal projection, conical space */
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_VALUE = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_V = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_SATURATION = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_S = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_HUE = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_H = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_HSVA_HEX_A = 15U,
|
||
|
|
/* MODEL_HSLA_HEX - lightness (luma), saturation, hue, alpha, hexagonal projection, double conical space */
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_LIGHTNESS = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_L = 0U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_SATURATION = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_S = 1U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_HUE = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_H = 2U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_HSLA_HEX_A = 15U,
|
||
|
|
/* MODEL_YCGCOA - luma, green delta, orange delta, alpha */
|
||
|
|
KHR_DF_CHANNEL_YCGCOA_Y = 0U,
|
||
|
|
KHR_DF_CHANNEL_YCGCOA_CG = 1U,
|
||
|
|
KHR_DF_CHANNEL_YCGCOA_CO = 2U,
|
||
|
|
KHR_DF_CHANNEL_YCGCOA_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_YCGCOA_A = 15U,
|
||
|
|
/* MODEL_CIEXYZ - CIE 1931 X, Y, Z */
|
||
|
|
KHR_DF_CHANNEL_CIEXYZ_X = 0U,
|
||
|
|
KHR_DF_CHANNEL_CIEXYZ_Y = 1U,
|
||
|
|
KHR_DF_CHANNEL_CIEXYZ_Z = 2U,
|
||
|
|
/* MODEL_CIEXYY - CIE 1931 x, y, Y */
|
||
|
|
KHR_DF_CHANNEL_CIEXYY_X = 0U,
|
||
|
|
KHR_DF_CHANNEL_CIEXYY_YCHROMA = 1U,
|
||
|
|
KHR_DF_CHANNEL_CIEXYY_YLUMA = 2U,
|
||
|
|
|
||
|
|
/* Compressed formats */
|
||
|
|
/* MODEL_DXT1A/MODEL_BC1A */
|
||
|
|
KHR_DF_CHANNEL_DXT1A_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC1A_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_DXT1A_ALPHAPRESENT = 1U,
|
||
|
|
KHR_DF_CHANNEL_DXT1A_ALPHA = 1U,
|
||
|
|
KHR_DF_CHANNEL_BC1A_ALPHAPRESENT = 1U,
|
||
|
|
KHR_DF_CHANNEL_BC1A_ALPHA = 1U,
|
||
|
|
/* MODEL_DXT2/3/MODEL_BC2 */
|
||
|
|
KHR_DF_CHANNEL_DXT2_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_DXT3_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC2_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_DXT2_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_DXT3_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_BC2_ALPHA = 15U,
|
||
|
|
/* MODEL_DXT4/5/MODEL_BC3 */
|
||
|
|
KHR_DF_CHANNEL_DXT4_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_DXT5_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC3_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_DXT4_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_DXT5_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_BC3_ALPHA = 15U,
|
||
|
|
/* MODEL_BC4 */
|
||
|
|
KHR_DF_CHANNEL_BC4_DATA = 0U,
|
||
|
|
/* MODEL_BC5 */
|
||
|
|
KHR_DF_CHANNEL_BC5_RED = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC5_R = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC5_GREEN = 1U,
|
||
|
|
KHR_DF_CHANNEL_BC5_G = 1U,
|
||
|
|
/* MODEL_BC6H */
|
||
|
|
KHR_DF_CHANNEL_BC6H_COLOR = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC6H_DATA = 0U,
|
||
|
|
/* MODEL_BC7 */
|
||
|
|
KHR_DF_CHANNEL_BC7_DATA = 0U,
|
||
|
|
KHR_DF_CHANNEL_BC7_COLOR = 0U,
|
||
|
|
/* MODEL_ETC1 */
|
||
|
|
KHR_DF_CHANNEL_ETC1_DATA = 0U,
|
||
|
|
KHR_DF_CHANNEL_ETC1_COLOR = 0U,
|
||
|
|
/* MODEL_ETC2 */
|
||
|
|
KHR_DF_CHANNEL_ETC2_RED = 0U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_R = 0U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_GREEN = 1U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_G = 1U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_COLOR = 2U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_ETC2_A = 15U,
|
||
|
|
/* MODEL_ASTC */
|
||
|
|
KHR_DF_CHANNEL_ASTC_DATA = 0U,
|
||
|
|
/* MODEL_ETC1S */
|
||
|
|
KHR_DF_CHANNEL_ETC1S_RGB = 0U,
|
||
|
|
KHR_DF_CHANNEL_ETC1S_RRR = 3U,
|
||
|
|
KHR_DF_CHANNEL_ETC1S_GGG = 4U,
|
||
|
|
KHR_DF_CHANNEL_ETC1S_AAA = 15U,
|
||
|
|
/* MODEL_PVRTC */
|
||
|
|
KHR_DF_CHANNEL_PVRTC_DATA = 0U,
|
||
|
|
KHR_DF_CHANNEL_PVRTC_COLOR = 0U,
|
||
|
|
/* MODEL_PVRTC2 */
|
||
|
|
KHR_DF_CHANNEL_PVRTC2_DATA = 0U,
|
||
|
|
KHR_DF_CHANNEL_PVRTC2_COLOR = 0U,
|
||
|
|
/* MODEL UASTC */
|
||
|
|
KHR_DF_CHANNEL_UASTC_DATA = 0U,
|
||
|
|
KHR_DF_CHANNEL_UASTC_RGB = 0U,
|
||
|
|
KHR_DF_CHANNEL_UASTC_RGBA = 3U,
|
||
|
|
KHR_DF_CHANNEL_UASTC_RRR = 4U,
|
||
|
|
KHR_DF_CHANNEL_UASTC_RRRG = 5U,
|
||
|
|
KHR_DF_CHANNEL_UASTC_RG = 6U,
|
||
|
|
|
||
|
|
/* Common channel names shared by multiple formats */
|
||
|
|
KHR_DF_CHANNEL_COMMON_LUMA = 0U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_L = 0U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_STENCIL = 13U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_S = 13U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_DEPTH = 14U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_D = 14U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_ALPHA = 15U,
|
||
|
|
KHR_DF_CHANNEL_COMMON_A = 15U
|
||
|
|
} khr_df_model_channels_e;
|
||
|
|
|
||
|
|
/* Definition of the primary colors in color coordinates.
|
||
|
|
This is implicitly responsible for defining the conversion
|
||
|
|
between RGB an YUV color spaces.
|
||
|
|
LAB and related absolute color models should use
|
||
|
|
KHR_DF_PRIMARIES_CIEXYZ. */
|
||
|
|
typedef enum _khr_df_primaries_e {
|
||
|
|
/* No color primaries defined */
|
||
|
|
KHR_DF_PRIMARIES_UNSPECIFIED = 0U,
|
||
|
|
/* Color primaries of ITU-R BT.709 and sRGB */
|
||
|
|
KHR_DF_PRIMARIES_BT709 = 1U,
|
||
|
|
/* Synonym for KHR_DF_PRIMARIES_BT709 */
|
||
|
|
KHR_DF_PRIMARIES_SRGB = 1U,
|
||
|
|
/* Color primaries of ITU-R BT.601 (625-line EBU variant) */
|
||
|
|
KHR_DF_PRIMARIES_BT601_EBU = 2U,
|
||
|
|
/* Color primaries of ITU-R BT.601 (525-line SMPTE C variant) */
|
||
|
|
KHR_DF_PRIMARIES_BT601_SMPTE = 3U,
|
||
|
|
/* Color primaries of ITU-R BT.2020 */
|
||
|
|
KHR_DF_PRIMARIES_BT2020 = 4U,
|
||
|
|
/* CIE theoretical color coordinate space */
|
||
|
|
KHR_DF_PRIMARIES_CIEXYZ = 5U,
|
||
|
|
/* Academy Color Encoding System primaries */
|
||
|
|
KHR_DF_PRIMARIES_ACES = 6U,
|
||
|
|
/* Color primaries of ACEScc */
|
||
|
|
KHR_DF_PRIMARIES_ACESCC = 7U,
|
||
|
|
/* Legacy NTSC 1953 primaries */
|
||
|
|
KHR_DF_PRIMARIES_NTSC1953 = 8U,
|
||
|
|
/* Legacy PAL 525-line primaries */
|
||
|
|
KHR_DF_PRIMARIES_PAL525 = 9U,
|
||
|
|
/* Color primaries of Display P3 */
|
||
|
|
KHR_DF_PRIMARIES_DISPLAYP3 = 10U,
|
||
|
|
/* Color primaries of Adobe RGB (1998) */
|
||
|
|
KHR_DF_PRIMARIES_ADOBERGB = 11U,
|
||
|
|
KHR_DF_PRIMARIES_MAX = 0xFFU
|
||
|
|
} khr_df_primaries_e;
|
||
|
|
|
||
|
|
/* Definition of the optical to digital transfer function
|
||
|
|
("gamma correction"). Most transfer functions are not a pure
|
||
|
|
power function and also include a linear element.
|
||
|
|
LAB and related absolute color representations should use
|
||
|
|
KHR_DF_TRANSFER_UNSPECIFIED. */
|
||
|
|
typedef enum _khr_df_transfer_e {
|
||
|
|
/* No transfer function defined */
|
||
|
|
KHR_DF_TRANSFER_UNSPECIFIED = 0U,
|
||
|
|
/* Linear transfer function (value proportional to intensity) */
|
||
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|
KHR_DF_TRANSFER_LINEAR = 1U,
|
||
|
|
/* Perceptually-linear transfer function of sRGH (~2.4) */
|
||
|
|
KHR_DF_TRANSFER_SRGB = 2U,
|
||
|
|
/* Perceptually-linear transfer function of ITU BT.601, BT.709 and BT.2020 (~1/.45) */
|
||
|
|
KHR_DF_TRANSFER_ITU = 3U,
|
||
|
|
/* SMTPE170M (digital NTSC) defines an alias for the ITU transfer function (~1/.45) */
|
||
|
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KHR_DF_TRANSFER_SMTPE170M = 3U,
|
||
|
|
/* Perceptually-linear gamma function of original NTSC (simple 2.2 gamma) */
|
||
|
|
KHR_DF_TRANSFER_NTSC = 4U,
|
||
|
|
/* Sony S-log used by Sony video cameras */
|
||
|
|
KHR_DF_TRANSFER_SLOG = 5U,
|
||
|
|
/* Sony S-log 2 used by Sony video cameras */
|
||
|
|
KHR_DF_TRANSFER_SLOG2 = 6U,
|
||
|
|
/* ITU BT.1886 EOTF */
|
||
|
|
KHR_DF_TRANSFER_BT1886 = 7U,
|
||
|
|
/* ITU BT.2100 HLG OETF */
|
||
|
|
KHR_DF_TRANSFER_HLG_OETF = 8U,
|
||
|
|
/* ITU BT.2100 HLG EOTF */
|
||
|
|
KHR_DF_TRANSFER_HLG_EOTF = 9U,
|
||
|
|
/* ITU BT.2100 PQ EOTF */
|
||
|
|
KHR_DF_TRANSFER_PQ_EOTF = 10U,
|
||
|
|
/* ITU BT.2100 PQ OETF */
|
||
|
|
KHR_DF_TRANSFER_PQ_OETF = 11U,
|
||
|
|
/* DCI P3 transfer function */
|
||
|
|
KHR_DF_TRANSFER_DCIP3 = 12U,
|
||
|
|
/* Legacy PAL OETF */
|
||
|
|
KHR_DF_TRANSFER_PAL_OETF = 13U,
|
||
|
|
/* Legacy PAL 625-line EOTF */
|
||
|
|
KHR_DF_TRANSFER_PAL625_EOTF = 14U,
|
||
|
|
/* Legacy ST240 transfer function */
|
||
|
|
KHR_DF_TRANSFER_ST240 = 15U,
|
||
|
|
/* ACEScc transfer function */
|
||
|
|
KHR_DF_TRANSFER_ACESCC = 16U,
|
||
|
|
/* ACEScct transfer function */
|
||
|
|
KHR_DF_TRANSFER_ACESCCT = 17U,
|
||
|
|
/* Adobe RGB (1998) transfer function */
|
||
|
|
KHR_DF_TRANSFER_ADOBERGB = 18U,
|
||
|
|
KHR_DF_TRANSFER_MAX = 0xFFU
|
||
|
|
} khr_df_transfer_e;
|
||
|
|
|
||
|
|
typedef enum _khr_df_flags_e {
|
||
|
|
KHR_DF_FLAG_ALPHA_STRAIGHT = 0U,
|
||
|
|
KHR_DF_FLAG_ALPHA_PREMULTIPLIED = 1U
|
||
|
|
} khr_df_flags_e;
|
||
|
|
|
||
|
|
typedef enum _khr_df_sample_datatype_qualifiers_e {
|
||
|
|
KHR_DF_SAMPLE_DATATYPE_LINEAR = 1U << 4U,
|
||
|
|
KHR_DF_SAMPLE_DATATYPE_EXPONENT = 1U << 5U,
|
||
|
|
KHR_DF_SAMPLE_DATATYPE_SIGNED = 1U << 6U,
|
||
|
|
KHR_DF_SAMPLE_DATATYPE_FLOAT = 1U << 7U
|
||
|
|
} khr_df_sample_datatype_qualifiers_e;
|
||
|
|
|
||
|
|
#endif
|