/*
* Copyright 2017 Google
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "formats.h"
#include "util/macros.h"
/**
* For an sRGB format, return the corresponding linear color space format.
* For non-sRGB formats, return the format as-is.
*/
mesa_format
_mesa_get_srgb_format_linear(mesa_format format)
{
switch (format) {
case MESA_FORMAT_A8B8G8R8_SRGB:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_B8G8R8A8_SRGB:
return MESA_FORMAT_B8G8R8A8_UNORM;
case MESA_FORMAT_A8R8G8B8_SRGB:
return MESA_FORMAT_A8R8G8B8_UNORM;
case MESA_FORMAT_B8G8R8X8_SRGB:
return MESA_FORMAT_B8G8R8X8_UNORM;
case MESA_FORMAT_X8R8G8B8_SRGB:
return MESA_FORMAT_X8R8G8B8_UNORM;
case MESA_FORMAT_R8G8B8A8_SRGB:
return MESA_FORMAT_R8G8B8A8_UNORM;
case MESA_FORMAT_R8G8B8X8_SRGB:
return MESA_FORMAT_R8G8B8X8_UNORM;
case MESA_FORMAT_X8B8G8R8_SRGB:
return MESA_FORMAT_X8B8G8R8_UNORM;
case MESA_FORMAT_L8A8_SRGB:
return MESA_FORMAT_L8A8_UNORM;
case MESA_FORMAT_A8L8_SRGB:
return MESA_FORMAT_A8L8_UNORM;
case MESA_FORMAT_L_SRGB8:
return MESA_FORMAT_L_UNORM8;
case MESA_FORMAT_BGR_SRGB8:
return MESA_FORMAT_BGR_UNORM8;
case MESA_FORMAT_SRGB_DXT1:
return MESA_FORMAT_RGB_DXT1;
case MESA_FORMAT_SRGBA_DXT1:
return MESA_FORMAT_RGBA_DXT1;
case MESA_FORMAT_SRGBA_DXT3:
return MESA_FORMAT_RGBA_DXT3;
case MESA_FORMAT_SRGBA_DXT5:
return MESA_FORMAT_RGBA_DXT5;
case MESA_FORMAT_ETC2_SRGB8:
return MESA_FORMAT_ETC2_RGB8;
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
return MESA_FORMAT_ETC2_RGBA8_EAC;
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
return MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1;
case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
return MESA_FORMAT_BPTC_RGBA_UNORM;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4:
return MESA_FORMAT_RGBA_ASTC_4x4;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4:
return MESA_FORMAT_RGBA_ASTC_5x4;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5:
return MESA_FORMAT_RGBA_ASTC_5x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5:
return MESA_FORMAT_RGBA_ASTC_6x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6:
return MESA_FORMAT_RGBA_ASTC_6x6;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5:
return MESA_FORMAT_RGBA_ASTC_8x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6:
return MESA_FORMAT_RGBA_ASTC_8x6;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8:
return MESA_FORMAT_RGBA_ASTC_8x8;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5:
return MESA_FORMAT_RGBA_ASTC_10x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6:
return MESA_FORMAT_RGBA_ASTC_10x6;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8:
return MESA_FORMAT_RGBA_ASTC_10x8;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10:
return MESA_FORMAT_RGBA_ASTC_10x10;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10:
return MESA_FORMAT_RGBA_ASTC_12x10;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12:
return MESA_FORMAT_RGBA_ASTC_12x12;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_3x3x3:
return MESA_FORMAT_RGBA_ASTC_3x3x3;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x3x3:
return MESA_FORMAT_RGBA_ASTC_4x3x3;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x3:
return MESA_FORMAT_RGBA_ASTC_4x4x3;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x4:
return MESA_FORMAT_RGBA_ASTC_4x4x4;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4x4:
return MESA_FORMAT_RGBA_ASTC_5x4x4;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x4:
return MESA_FORMAT_RGBA_ASTC_5x5x4;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x5:
return MESA_FORMAT_RGBA_ASTC_5x5x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5x5:
return MESA_FORMAT_RGBA_ASTC_6x5x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x5:
return MESA_FORMAT_RGBA_ASTC_6x6x5;
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x6:
return MESA_FORMAT_RGBA_ASTC_6x6x6;
default:
return format;
}
}
/**
* For a linear format, return the corresponding sRGB color space format.
* For an sRGB format, return the format as-is.
* Assert-fails if the format is not sRGB and does not have an sRGB equivalent.
*/
mesa_format
_mesa_get_linear_format_srgb(mesa_format format)
{
switch (format) {
case MESA_FORMAT_A8B8G8R8_UNORM:
return MESA_FORMAT_A8B8G8R8_SRGB;
case MESA_FORMAT_B8G8R8A8_UNORM:
return MESA_FORMAT_B8G8R8A8_SRGB;
case MESA_FORMAT_A8R8G8B8_UNORM:
return MESA_FORMAT_A8R8G8B8_SRGB;
case MESA_FORMAT_B8G8R8X8_UNORM:
return MESA_FORMAT_B8G8R8X8_SRGB;
case MESA_FORMAT_X8R8G8B8_UNORM:
return MESA_FORMAT_X8R8G8B8_SRGB;
case MESA_FORMAT_R8G8B8A8_UNORM:
return MESA_FORMAT_R8G8B8A8_SRGB;
case MESA_FORMAT_R8G8B8X8_UNORM:
return MESA_FORMAT_R8G8B8X8_SRGB;
case MESA_FORMAT_X8B8G8R8_UNORM:
return MESA_FORMAT_X8B8G8R8_SRGB;
case MESA_FORMAT_L8A8_UNORM:
return MESA_FORMAT_L8A8_SRGB;
case MESA_FORMAT_A8L8_UNORM:
return MESA_FORMAT_A8L8_SRGB;
case MESA_FORMAT_L_UNORM8:
return MESA_FORMAT_L_SRGB8;
case MESA_FORMAT_BGR_UNORM8:
return MESA_FORMAT_BGR_SRGB8;
case MESA_FORMAT_RGB_DXT1:
return MESA_FORMAT_SRGB_DXT1;
case MESA_FORMAT_RGBA_DXT1:
return MESA_FORMAT_SRGBA_DXT1;
case MESA_FORMAT_RGBA_DXT3:
return MESA_FORMAT_SRGBA_DXT3;
case MESA_FORMAT_RGBA_DXT5:
return MESA_FORMAT_SRGBA_DXT5;
case MESA_FORMAT_ETC2_RGB8:
return MESA_FORMAT_ETC2_SRGB8;
case MESA_FORMAT_ETC2_RGBA8_EAC:
return MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC;
case MESA_FORMAT_ETC2_RGB8_PUNCHTHROUGH_ALPHA1:
return MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1;
case MESA_FORMAT_BPTC_RGBA_UNORM:
return MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM;
case MESA_FORMAT_RGBA_ASTC_4x4:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4;
case MESA_FORMAT_RGBA_ASTC_5x4:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4;
case MESA_FORMAT_RGBA_ASTC_5x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5;
case MESA_FORMAT_RGBA_ASTC_6x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5;
case MESA_FORMAT_RGBA_ASTC_6x6:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6;
case MESA_FORMAT_RGBA_ASTC_8x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5;
case MESA_FORMAT_RGBA_ASTC_8x6:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6;
case MESA_FORMAT_RGBA_ASTC_8x8:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8;
case MESA_FORMAT_RGBA_ASTC_10x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5;
case MESA_FORMAT_RGBA_ASTC_10x6:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6;
case MESA_FORMAT_RGBA_ASTC_10x8:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8;
case MESA_FORMAT_RGBA_ASTC_10x10:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10;
case MESA_FORMAT_RGBA_ASTC_12x10:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10;
case MESA_FORMAT_RGBA_ASTC_12x12:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12;
case MESA_FORMAT_RGBA_ASTC_3x3x3:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_3x3x3;
case MESA_FORMAT_RGBA_ASTC_4x3x3:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x3x3;
case MESA_FORMAT_RGBA_ASTC_4x4x3:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x3;
case MESA_FORMAT_RGBA_ASTC_4x4x4:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x4;
case MESA_FORMAT_RGBA_ASTC_5x4x4:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4x4;
case MESA_FORMAT_RGBA_ASTC_5x5x4:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x4;
case MESA_FORMAT_RGBA_ASTC_5x5x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x5;
case MESA_FORMAT_RGBA_ASTC_6x5x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5x5;
case MESA_FORMAT_RGBA_ASTC_6x6x5:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x5;
case MESA_FORMAT_RGBA_ASTC_6x6x6:
return MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x6;
case MESA_FORMAT_A8B8G8R8_SRGB:
case MESA_FORMAT_B8G8R8A8_SRGB:
case MESA_FORMAT_A8R8G8B8_SRGB:
case MESA_FORMAT_B8G8R8X8_SRGB:
case MESA_FORMAT_X8R8G8B8_SRGB:
case MESA_FORMAT_R8G8B8A8_SRGB:
case MESA_FORMAT_R8G8B8X8_SRGB:
case MESA_FORMAT_X8B8G8R8_SRGB:
case MESA_FORMAT_L8A8_SRGB:
case MESA_FORMAT_A8L8_SRGB:
case MESA_FORMAT_L_SRGB8:
case MESA_FORMAT_BGR_SRGB8:
case MESA_FORMAT_SRGB_DXT1:
case MESA_FORMAT_SRGBA_DXT1:
case MESA_FORMAT_SRGBA_DXT3:
case MESA_FORMAT_SRGBA_DXT5:
case MESA_FORMAT_ETC2_SRGB8:
case MESA_FORMAT_ETC2_SRGB8_ALPHA8_EAC:
case MESA_FORMAT_ETC2_SRGB8_PUNCHTHROUGH_ALPHA1:
case MESA_FORMAT_BPTC_SRGB_ALPHA_UNORM:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x6:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_8x8:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x6:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x8:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_10x10:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x10:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_12x12:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_3x3x3:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x3x3:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x3:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_4x4x4:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x4x4:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x4:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_5x5x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x5x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x5:
case MESA_FORMAT_SRGB8_ALPHA8_ASTC_6x6x6:
return format;
default:
unreachable("Given format does not have an sRGB equivalent");
}
}
/**
* If the format has an alpha channel, and there exists a non-alpha
* variant of the format with an identical bit layout, then return
* the non-alpha format. Otherwise return the original format.
*
* Examples:
* Fallback exists:
* MESA_FORMAT_R8G8B8X8_UNORM -> MESA_FORMAT_R8G8B8A8_UNORM
* MESA_FORMAT_RGBX_UNORM16 -> MESA_FORMAT_RGBA_UNORM16
*
* No fallback:
* MESA_FORMAT_R8G8B8A8_UNORM -> MESA_FORMAT_R8G8B8A8_UNORM
* MESA_FORMAT_Z_FLOAT32 -> MESA_FORMAT_Z_FLOAT32
*/
mesa_format
_mesa_format_fallback_rgbx_to_rgba(mesa_format format)
{
switch (format) {
case MESA_FORMAT_X8B8G8R8_UNORM:
return MESA_FORMAT_A8B8G8R8_UNORM;
case MESA_FORMAT_R8G8B8X8_UNORM:
return MESA_FORMAT_R8G8B8A8_UNORM;
case MESA_FORMAT_B8G8R8X8_UNORM:
return MESA_FORMAT_B8G8R8A8_UNORM;
case MESA_FORMAT_X8R8G8B8_UNORM:
return MESA_FORMAT_A8R8G8B8_UNORM;
case MESA_FORMAT_B4G4R4X4_UNORM:
return MESA_FORMAT_B4G4R4A4_UNORM;
case MESA_FORMAT_X1B5G5R5_UNORM:
return MESA_FORMAT_A1B5G5R5_UNORM;
case MESA_FORMAT_B5G5R5X1_UNORM:
return MESA_FORMAT_B5G5R5A1_UNORM;
case MESA_FORMAT_B10G10R10X2_UNORM:
return MESA_FORMAT_B10G10R10A2_UNORM;
case MESA_FORMAT_R10G10B10X2_UNORM:
return MESA_FORMAT_R10G10B10A2_UNORM;
case MESA_FORMAT_RGBX_UNORM16:
return MESA_FORMAT_RGBA_UNORM16;
case MESA_FORMAT_X8B8G8R8_SNORM:
return MESA_FORMAT_A8B8G8R8_SNORM;
case MESA_FORMAT_R8G8B8X8_SNORM:
return MESA_FORMAT_R8G8B8A8_SNORM;
case MESA_FORMAT_RGBX_SNORM16:
return MESA_FORMAT_RGBA_SNORM16;
case MESA_FORMAT_B8G8R8X8_SRGB:
return MESA_FORMAT_B8G8R8A8_SRGB;
case MESA_FORMAT_X8R8G8B8_SRGB:
return MESA_FORMAT_A8R8G8B8_SRGB;
case MESA_FORMAT_R8G8B8X8_SRGB:
return MESA_FORMAT_R8G8B8A8_SRGB;
case MESA_FORMAT_X8B8G8R8_SRGB:
return MESA_FORMAT_A8B8G8R8_SRGB;
case MESA_FORMAT_RGBX_FLOAT16:
return MESA_FORMAT_RGBA_FLOAT16;
case MESA_FORMAT_RGBX_FLOAT32:
return MESA_FORMAT_RGBA_FLOAT32;
case MESA_FORMAT_RGBX_UINT8:
return MESA_FORMAT_RGBA_UINT8;
case MESA_FORMAT_RGBX_UINT16:
return MESA_FORMAT_RGBA_UINT16;
case MESA_FORMAT_RGBX_UINT32:
return MESA_FORMAT_RGBA_UINT32;
case MESA_FORMAT_RGBX_SINT8:
return MESA_FORMAT_RGBA_SINT8;
case MESA_FORMAT_RGBX_SINT16:
return MESA_FORMAT_RGBA_SINT16;
case MESA_FORMAT_RGBX_SINT32:
return MESA_FORMAT_RGBA_SINT32;
default:
return format;
}
}