src/intel/isl/isl_format.c

   1 /*
   2  * Copyright 2015 Intel Corporation
   3  *
   4  *  Permission is hereby granted, free of charge, to any person obtaining a
   5  *  copy of this software and associated documentation files (the "Software"),
   6  *  to deal in the Software without restriction, including without limitation
   7  *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  *  and/or sell copies of the Software, and to permit persons to whom the
   9  *  Software is furnished to do so, subject to the following conditions:
  10  *
  11  *  The above copyright notice and this permission notice (including the next
  12  *  paragraph) shall be included in all copies or substantial portions of the
  13  *  Software.
  14  *
  15  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  *  IN THE SOFTWARE.
  22  */
  23
  24 #include <assert.h>
  25
  26 #include "isl.h"
  27
  28 static inline bool
  29 isl_format_has_channel_type(enum isl_format fmt, enum isl_base_type type)
  30 {
  31    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
  32
  33    return fmtl->channels.r.type == type ||
  34           fmtl->channels.g.type == type ||
  35           fmtl->channels.b.type == type ||
  36           fmtl->channels.a.type == type ||
  37           fmtl->channels.l.type == type ||
  38           fmtl->channels.i.type == type ||
  39           fmtl->channels.p.type == type;
  40 }
  41
  42 bool
  43 isl_format_has_unorm_channel(enum isl_format fmt)
  44 {
  45    return isl_format_has_channel_type(fmt, ISL_UNORM);
  46 }
  47
  48 bool
  49 isl_format_has_snorm_channel(enum isl_format fmt)
  50 {
  51    return isl_format_has_channel_type(fmt, ISL_SNORM);
  52 }
  53
  54 bool
  55 isl_format_has_ufloat_channel(enum isl_format fmt)
  56 {
  57    return isl_format_has_channel_type(fmt, ISL_UFLOAT);
  58 }
  59
  60 bool
  61 isl_format_has_sfloat_channel(enum isl_format fmt)
  62 {
  63    return isl_format_has_channel_type(fmt, ISL_SFLOAT);
  64 }
  65
  66 bool
  67 isl_format_has_uint_channel(enum isl_format fmt)
  68 {
  69    return isl_format_has_channel_type(fmt, ISL_UINT);
  70 }
  71
  72 bool
  73 isl_format_has_sint_channel(enum isl_format fmt)
  74 {
  75    return isl_format_has_channel_type(fmt, ISL_SINT);
  76 }
  77
  78 unsigned
  79 isl_format_get_num_channels(enum isl_format fmt)
  80 {
  81    const struct isl_format_layout *fmtl = isl_format_get_layout(fmt);
  82
  83    assert(fmtl->channels.p.bits == 0);
  84
  85    return (fmtl->channels.r.bits > 0) +
  86           (fmtl->channels.g.bits > 0) +
  87           (fmtl->channels.b.bits > 0) +
  88           (fmtl->channels.a.bits > 0) +
  89           (fmtl->channels.l.bits > 0) +
  90           (fmtl->channels.i.bits > 0);
  91 }
  92
  93 enum isl_format
  94 isl_format_rgb_to_rgba(enum isl_format rgb)
  95 {
  96    assert(isl_format_is_rgb(rgb));
  97
  98    switch (rgb) {
  99    case ISL_FORMAT_R32G32B32_FLOAT:    return ISL_FORMAT_R32G32B32A32_FLOAT;
 100    case ISL_FORMAT_R32G32B32_SINT:     return ISL_FORMAT_R32G32B32A32_SINT;
 101    case ISL_FORMAT_R32G32B32_UINT:     return ISL_FORMAT_R32G32B32A32_UINT;
 102    case ISL_FORMAT_R32G32B32_UNORM:    return ISL_FORMAT_R32G32B32A32_UNORM;
 103    case ISL_FORMAT_R32G32B32_SNORM:    return ISL_FORMAT_R32G32B32A32_SNORM;
 104    case ISL_FORMAT_R32G32B32_SSCALED:  return ISL_FORMAT_R32G32B32A32_SSCALED;
 105    case ISL_FORMAT_R32G32B32_USCALED:  return ISL_FORMAT_R32G32B32A32_USCALED;
 106    case ISL_FORMAT_R32G32B32_SFIXED:   return ISL_FORMAT_R32G32B32A32_SFIXED;
 107    case ISL_FORMAT_R8G8B8_UNORM:       return ISL_FORMAT_R8G8B8A8_UNORM;
 108    case ISL_FORMAT_R8G8B8_SNORM:       return ISL_FORMAT_R8G8B8A8_SNORM;
 109    case ISL_FORMAT_R8G8B8_SSCALED:     return ISL_FORMAT_R8G8B8A8_SSCALED;
 110    case ISL_FORMAT_R8G8B8_USCALED:     return ISL_FORMAT_R8G8B8A8_USCALED;
 111    case ISL_FORMAT_R16G16B16_FLOAT:    return ISL_FORMAT_R16G16B16A16_FLOAT;
 112    case ISL_FORMAT_R16G16B16_UNORM:    return ISL_FORMAT_R16G16B16A16_UNORM;
 113    case ISL_FORMAT_R16G16B16_SNORM:    return ISL_FORMAT_R16G16B16A16_SNORM;
 114    case ISL_FORMAT_R16G16B16_SSCALED:  return ISL_FORMAT_R16G16B16A16_SSCALED;
 115    case ISL_FORMAT_R16G16B16_USCALED:  return ISL_FORMAT_R16G16B16A16_USCALED;
 116    case ISL_FORMAT_R8G8B8_UNORM_SRGB:  return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
 117    case ISL_FORMAT_R16G16B16_UINT:     return ISL_FORMAT_R16G16B16A16_UINT;
 118    case ISL_FORMAT_R16G16B16_SINT:     return ISL_FORMAT_R16G16B16A16_SINT;
 119    case ISL_FORMAT_R8G8B8_UINT:        return ISL_FORMAT_R8G8B8A8_UINT;
 120    case ISL_FORMAT_R8G8B8_SINT:        return ISL_FORMAT_R8G8B8A8_SINT;
 121    default:
 122       return ISL_FORMAT_UNSUPPORTED;
 123    }
 124 }
 125
 126 enum isl_format
 127 isl_format_rgb_to_rgbx(enum isl_format rgb)
 128 {
 129    assert(isl_format_is_rgb(rgb));
 130
 131    switch (rgb) {
 132    case ISL_FORMAT_R32G32B32_FLOAT:
 133       return ISL_FORMAT_R32G32B32X32_FLOAT;
 134    case ISL_FORMAT_R16G16B16_UNORM:
 135       return ISL_FORMAT_R16G16B16X16_UNORM;
 136    case ISL_FORMAT_R16G16B16_FLOAT:
 137       return ISL_FORMAT_R16G16B16X16_FLOAT;
 138    case ISL_FORMAT_R8G8B8_UNORM:
 139       return ISL_FORMAT_R8G8B8X8_UNORM;
 140    case ISL_FORMAT_R8G8B8_UNORM_SRGB:
 141       return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
 142    default:
 143       return ISL_FORMAT_UNSUPPORTED;
 144    }
 145 }