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isl/format: Add some helpers for working with RGB formats

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This commit is contained in:
Jason Ekstrand 2015-12-31 14:57:51 -08:00
parent 0639f44d0f
commit 603a3a9439
2 changed files with 66 additions and 0 deletions
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12
src/isl/isl.h
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@ -823,6 +823,18 @@ isl_format_block_is_1x1x1(enum isl_format fmt)
return fmtl->bw == 1 && fmtl->bh == 1 && fmtl->bd == 1;
}
static inline bool
isl_format_is_rgb(enum isl_format fmt)
{
return isl_format_layouts[fmt].channels.r.bits > 0 &&
isl_format_layouts[fmt].channels.g.bits > 0 &&
isl_format_layouts[fmt].channels.b.bits > 0 &&
isl_format_layouts[fmt].channels.a.bits == 0;
}
enum isl_format isl_format_rgb_to_rgba(enum isl_format rgb) ATTRIBUTE_CONST;
enum isl_format isl_format_rgb_to_rgbx(enum isl_format rgb) ATTRIBUTE_CONST;
bool isl_is_storage_image_format(enum isl_format fmt);
enum isl_format

54
src/isl/isl_format.c
View file

@ -39,3 +39,57 @@ isl_format_has_sint_channel(enum isl_format fmt)
fmtl->channels.p.type == ISL_SINT ||
fmtl->channels.g.type == ISL_SINT;
}
enum isl_format
isl_format_rgb_to_rgba(enum isl_format rgb)
{
assert(isl_format_is_rgb(rgb));
switch (rgb) {
case ISL_FORMAT_R32G32B32_FLOAT: return ISL_FORMAT_R32G32B32A32_FLOAT;
case ISL_FORMAT_R32G32B32_SINT: return ISL_FORMAT_R32G32B32A32_SINT;
case ISL_FORMAT_R32G32B32_UINT: return ISL_FORMAT_R32G32B32A32_UINT;
case ISL_FORMAT_R32G32B32_UNORM: return ISL_FORMAT_R32G32B32A32_UNORM;
case ISL_FORMAT_R32G32B32_SNORM: return ISL_FORMAT_R32G32B32A32_SNORM;
case ISL_FORMAT_R32G32B32_SSCALED: return ISL_FORMAT_R32G32B32A32_SSCALED;
case ISL_FORMAT_R32G32B32_USCALED: return ISL_FORMAT_R32G32B32A32_USCALED;
case ISL_FORMAT_R32G32B32_SFIXED: return ISL_FORMAT_R32G32B32A32_SFIXED;
case ISL_FORMAT_R8G8B8_UNORM: return ISL_FORMAT_R8G8B8A8_UNORM;
case ISL_FORMAT_R8G8B8_SNORM: return ISL_FORMAT_R8G8B8A8_SNORM;
case ISL_FORMAT_R8G8B8_SSCALED: return ISL_FORMAT_R8G8B8A8_SSCALED;
case ISL_FORMAT_R8G8B8_USCALED: return ISL_FORMAT_R8G8B8A8_USCALED;
case ISL_FORMAT_R16G16B16_FLOAT: return ISL_FORMAT_R16G16B16A16_FLOAT;
case ISL_FORMAT_R16G16B16_UNORM: return ISL_FORMAT_R16G16B16A16_UNORM;
case ISL_FORMAT_R16G16B16_SNORM: return ISL_FORMAT_R16G16B16A16_SNORM;
case ISL_FORMAT_R16G16B16_SSCALED: return ISL_FORMAT_R16G16B16A16_SSCALED;
case ISL_FORMAT_R16G16B16_USCALED: return ISL_FORMAT_R16G16B16A16_USCALED;
case ISL_FORMAT_R8G8B8_UNORM_SRGB: return ISL_FORMAT_R8G8B8A8_UNORM_SRGB;
case ISL_FORMAT_R16G16B16_UINT: return ISL_FORMAT_R16G16B16A16_UINT;
case ISL_FORMAT_R16G16B16_SINT: return ISL_FORMAT_R16G16B16A16_SINT;
case ISL_FORMAT_R8G8B8_UINT: return ISL_FORMAT_R8G8B8A8_UINT;
case ISL_FORMAT_R8G8B8_SINT: return ISL_FORMAT_R8G8B8A8_SINT;
default:
return ISL_FORMAT_UNSUPPORTED;
}
}
enum isl_format
isl_format_rgb_to_rgbx(enum isl_format rgb)
{
assert(isl_format_is_rgb(rgb));
switch (rgb) {
case ISL_FORMAT_R32G32B32_FLOAT:
return ISL_FORMAT_R32G32B32X32_FLOAT;
case ISL_FORMAT_R16G16B16_UNORM:
return ISL_FORMAT_R16G16B16X16_UNORM;
case ISL_FORMAT_R16G16B16_FLOAT:
return ISL_FORMAT_R16G16B16X16_FLOAT;
case ISL_FORMAT_R8G8B8_UNORM:
return ISL_FORMAT_R8G8B8X8_UNORM;
case ISL_FORMAT_R8G8B8_UNORM_SRGB:
return ISL_FORMAT_R8G8B8X8_UNORM_SRGB;
default:
return ISL_FORMAT_UNSUPPORTED;
}
}