util: Kill array vs arith layouts. Revamp UTIL_FORMAT_LAYOUT_xxx.

Too confusing. I now can get the same information through other means.

4 files changed, 163 insertions, 180 deletions

diff --git a/src/gallium/auxiliary/util/u_format.csv b/src/gallium/auxiliary/util/u_format.csv
index e8765f2351..50341e9752 100644
--- a/src/gallium/auxiliary/util/u_format.csv
+++ b/src/gallium/auxiliary/util/u_format.csv
@@ -1,135 +1,135 @@
 # Typical rendertarget formats
-PIPE_FORMAT_A8R8G8B8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , zyxw, rgb
-PIPE_FORMAT_X8R8G8B8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , zyx1, rgb
-PIPE_FORMAT_B8G8R8A8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , yzwx, rgb
-PIPE_FORMAT_B8G8R8X8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , yzw1, rgb
-PIPE_FORMAT_A1R5G5B5_UNORM        , arith , 1, 1, un5 , un5 , un5 , un1 , zyxw, rgb
-PIPE_FORMAT_A4R4G4B4_UNORM        , arith , 1, 1, un4 , un4 , un4 , un4 , zyxw, rgb
-PIPE_FORMAT_R5G6B5_UNORM          , arith , 1, 1, un5 , un6 , un5 ,     , zyx1, rgb
-PIPE_FORMAT_A2B10G10R10_UNORM     , arith , 1, 1, un10, un10, un10, un2 , xyzw, rgb
+PIPE_FORMAT_A8R8G8B8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , zyxw, rgb
+PIPE_FORMAT_X8R8G8B8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , zyx1, rgb
+PIPE_FORMAT_B8G8R8A8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , yzwx, rgb
+PIPE_FORMAT_B8G8R8X8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , yzw1, rgb
+PIPE_FORMAT_A1R5G5B5_UNORM        , plain, 1, 1, un5 , un5 , un5 , un1 , zyxw, rgb
+PIPE_FORMAT_A4R4G4B4_UNORM        , plain, 1, 1, un4 , un4 , un4 , un4 , zyxw, rgb
+PIPE_FORMAT_R5G6B5_UNORM          , plain, 1, 1, un5 , un6 , un5 ,     , zyx1, rgb
+PIPE_FORMAT_A2B10G10R10_UNORM     , plain, 1, 1, un10, un10, un10, un2 , xyzw, rgb
 
 # Luminance/Intensity/Alpha formats
-PIPE_FORMAT_L8_UNORM              , arith , 1, 1, un8 ,     ,     ,     , xxx1, rgb
-PIPE_FORMAT_A8_UNORM              , arith , 1, 1, un8 ,     ,     ,     , 000x, rgb
-PIPE_FORMAT_I8_UNORM              , arith , 1, 1, un8 ,     ,     ,     , xxxx, rgb
-PIPE_FORMAT_A8L8_UNORM            , arith , 1, 1, un8 , un8 ,     ,     , xxxy, rgb
-PIPE_FORMAT_L16_UNORM             , arith , 1, 1, un16,     ,     ,     , xxx1, rgb
+PIPE_FORMAT_L8_UNORM              , plain, 1, 1, un8 ,     ,     ,     , xxx1, rgb
+PIPE_FORMAT_A8_UNORM              , plain, 1, 1, un8 ,     ,     ,     , 000x, rgb
+PIPE_FORMAT_I8_UNORM              , plain, 1, 1, un8 ,     ,     ,     , xxxx, rgb
+PIPE_FORMAT_A8L8_UNORM            , plain, 1, 1, un8 , un8 ,     ,     , xxxy, rgb
+PIPE_FORMAT_L16_UNORM             , plain, 1, 1, un16,     ,     ,     , xxx1, rgb
 
 # SRGB formats
-PIPE_FORMAT_L8_SRGB               , arith , 1, 1, u8  ,     ,     ,     , xxx1, srgb 
-PIPE_FORMAT_A8L8_SRGB             , arith , 1, 1, u8  , u8  ,     ,     , xxxy, srgb 
-PIPE_FORMAT_R8G8B8_SRGB           , arith , 1, 1, u8  , u8  , u8  ,     , zyx1, srgb 
-PIPE_FORMAT_R8G8B8A8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , wzyx, srgb
-PIPE_FORMAT_R8G8B8X8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , wzy1, srgb
-PIPE_FORMAT_A8R8G8B8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , zyxw, srgb
-PIPE_FORMAT_X8R8G8B8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , zyx1, srgb
-PIPE_FORMAT_B8G8R8A8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , yzwx, srgb
-PIPE_FORMAT_B8G8R8X8_SRGB         , arith , 1, 1, u8  , u8  , u8  , u8  , yzw1, srgb
+PIPE_FORMAT_L8_SRGB               , plain, 1, 1, u8  ,     ,     ,     , xxx1, srgb 
+PIPE_FORMAT_A8L8_SRGB             , plain, 1, 1, u8  , u8  ,     ,     , xxxy, srgb 
+PIPE_FORMAT_R8G8B8_SRGB           , plain, 1, 1, u8  , u8  , u8  ,     , zyx1, srgb 
+PIPE_FORMAT_R8G8B8A8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , wzyx, srgb
+PIPE_FORMAT_R8G8B8X8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , wzy1, srgb
+PIPE_FORMAT_A8R8G8B8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , zyxw, srgb
+PIPE_FORMAT_X8R8G8B8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , zyx1, srgb
+PIPE_FORMAT_B8G8R8A8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , yzwx, srgb
+PIPE_FORMAT_B8G8R8X8_SRGB         , plain, 1, 1, u8  , u8  , u8  , u8  , yzw1, srgb
 
 # Signed formats (typically used for bump map textures)
-PIPE_FORMAT_A8B8G8R8_SNORM        , arith , 1, 1, sn8 , sn8 , sn8 , sn8 , wzyx, rgb
-PIPE_FORMAT_X8B8G8R8_SNORM        , arith , 1, 1, sn8 , sn8 , sn8 , sn8 , wzy1, rgb
-PIPE_FORMAT_X8UB8UG8SR8S_NORM     , arith , 1, 1, sn8 , sn8 , un8 , x8  , xyz1, rgb
-PIPE_FORMAT_B6UG5SR5S_NORM        , arith , 1, 1, sn5 , sn5 , un6 ,     , xyz1, rgb
+PIPE_FORMAT_A8B8G8R8_SNORM        , plain, 1, 1, sn8 , sn8 , sn8 , sn8 , wzyx, rgb
+PIPE_FORMAT_X8B8G8R8_SNORM        , plain, 1, 1, sn8 , sn8 , sn8 , sn8 , wzy1, rgb
+PIPE_FORMAT_X8UB8UG8SR8S_NORM     , plain, 1, 1, sn8 , sn8 , un8 , x8  , xyz1, rgb
+PIPE_FORMAT_B6UG5SR5S_NORM        , plain, 1, 1, sn5 , sn5 , un6 ,     , xyz1, rgb
 
 # Depth-stencil formats
-PIPE_FORMAT_S8_UNORM              , array , 1, 1, un8 ,     ,     ,     , _x__, zs 
-PIPE_FORMAT_Z16_UNORM             , array , 1, 1, un16,     ,     ,     , x___, zs 
-PIPE_FORMAT_Z32_UNORM             , array , 1, 1, un32,     ,     ,     , x___, zs 
-PIPE_FORMAT_Z32_FLOAT             , array , 1, 1, f32 ,     ,     ,     , x___, zs 
-PIPE_FORMAT_S8Z24_UNORM           , arith , 1, 1, un24, un8 ,     ,     , xy__, zs 
-PIPE_FORMAT_Z24S8_UNORM           , arith , 1, 1, un8 , un24,     ,     , yx__, zs 
-PIPE_FORMAT_X8Z24_UNORM           , arith , 1, 1, un24, un8 ,     ,     , x___, zs 
-PIPE_FORMAT_Z24X8_UNORM           , arith , 1, 1, un8 , un24,     ,     , y___, zs 
+PIPE_FORMAT_S8_UNORM              , plain, 1, 1, un8 ,     ,     ,     , _x__, zs 
+PIPE_FORMAT_Z16_UNORM             , plain, 1, 1, un16,     ,     ,     , x___, zs 
+PIPE_FORMAT_Z32_UNORM             , plain, 1, 1, un32,     ,     ,     , x___, zs 
+PIPE_FORMAT_Z32_FLOAT             , plain, 1, 1, f32 ,     ,     ,     , x___, zs 
+PIPE_FORMAT_S8Z24_UNORM           , plain, 1, 1, un24, un8 ,     ,     , xy__, zs 
+PIPE_FORMAT_Z24S8_UNORM           , plain, 1, 1, un8 , un24,     ,     , yx__, zs 
+PIPE_FORMAT_X8Z24_UNORM           , plain, 1, 1, un24, un8 ,     ,     , x___, zs 
+PIPE_FORMAT_Z24X8_UNORM           , plain, 1, 1, un8 , un24,     ,     , y___, zs 
 
 # YUV formats
-PIPE_FORMAT_YCBCR                 , yuv   , 2, 1, x32 ,     ,     ,     , xyz1, yuv
-PIPE_FORMAT_YCBCR_REV             , yuv   , 2, 1, x32 ,     ,     ,     , xyz1, yuv
+PIPE_FORMAT_YCBCR                 , subsampled, 2, 1, x32 ,     ,     ,     , xyz1, yuv
+PIPE_FORMAT_YCBCR_REV             , subsampled, 2, 1, x32 ,     ,     ,     , xyz1, yuv
 
 # Compressed formats
-PIPE_FORMAT_DXT1_RGB              , dxt   , 4, 4, x64 ,     ,     ,     , xyz1, rgb
-PIPE_FORMAT_DXT1_RGBA             , dxt   , 4, 4, x64 ,     ,     ,     , xyzw, rgb
-PIPE_FORMAT_DXT3_RGBA             , dxt   , 4, 4, x128,     ,     ,     , xyzw, rgb
-PIPE_FORMAT_DXT5_RGBA             , dxt   , 4, 4, x128,     ,     ,     , xyzw, rgb
-PIPE_FORMAT_DXT1_SRGB             , dxt   , 4, 4, x64 ,     ,     ,     , xyz1, srgb
-PIPE_FORMAT_DXT1_SRGBA            , dxt   , 4, 4, x64 ,     ,     ,     , xyzw, srgb
-PIPE_FORMAT_DXT3_SRGBA            , dxt   , 4, 4, x128,     ,     ,     , xyzw, srgb
-PIPE_FORMAT_DXT5_SRGBA            , dxt   , 4, 4, x128,     ,     ,     , xyzw, srgb
+PIPE_FORMAT_DXT1_RGB              , compressed, 4, 4, x64 ,     ,     ,     , xyz1, rgb
+PIPE_FORMAT_DXT1_RGBA             , compressed, 4, 4, x64 ,     ,     ,     , xyzw, rgb
+PIPE_FORMAT_DXT3_RGBA             , compressed, 4, 4, x128,     ,     ,     , xyzw, rgb
+PIPE_FORMAT_DXT5_RGBA             , compressed, 4, 4, x128,     ,     ,     , xyzw, rgb
+PIPE_FORMAT_DXT1_SRGB             , compressed, 4, 4, x64 ,     ,     ,     , xyz1, srgb
+PIPE_FORMAT_DXT1_SRGBA            , compressed, 4, 4, x64 ,     ,     ,     , xyzw, srgb
+PIPE_FORMAT_DXT3_SRGBA            , compressed, 4, 4, x128,     ,     ,     , xyzw, srgb
+PIPE_FORMAT_DXT5_SRGBA            , compressed, 4, 4, x128,     ,     ,     , xyzw, srgb
 
 # Old vector formats
 # XXX: Swizzle notation is reversed for these!
 # See also:
 # - src/gallium/auxiliary/translate/translate_generic.c
 # - src/mesa/state_tracker/st_draw.c
-PIPE_FORMAT_R64_FLOAT             , array , 1, 1, f64 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R64G64_FLOAT          , array , 1, 1, f64 , f64 ,     ,     , xy01, rgb
-PIPE_FORMAT_R64G64B64_FLOAT       , array , 1, 1, f64 , f64 , f64 ,     , xyz1, rgb
-PIPE_FORMAT_R64G64B64A64_FLOAT    , array , 1, 1, f64 , f64 , f64 , f64 , xyzw, rgb
-PIPE_FORMAT_R32_FLOAT             , array , 1, 1, f32 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_FLOAT          , array , 1, 1, f32 , f32 ,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_FLOAT       , array , 1, 1, f32 , f32 , f32 ,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_FLOAT    , array , 1, 1, f32 , f32 , f32 , f32 , xyzw, rgb
-PIPE_FORMAT_R32_UNORM             , array , 1, 1, un32,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_UNORM          , array , 1, 1, un32, un32,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_UNORM       , array , 1, 1, un32, un32, un32,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_UNORM    , array , 1, 1, un32, un32, un32, un32, xyzw, rgb
-PIPE_FORMAT_R32_USCALED           , array , 1, 1, u32 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_USCALED        , array , 1, 1, u32 , u32 ,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_USCALED     , array , 1, 1, u32 , u32 , u32 ,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_USCALED  , array , 1, 1, u32 , u32 , u32 , u32 , xyzw, rgb
-PIPE_FORMAT_R32_SNORM             , array , 1, 1, sn32,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_SNORM          , array , 1, 1, sn32, sn32,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_SNORM       , array , 1, 1, sn32, sn32, sn32,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_SNORM    , array , 1, 1, sn32, sn32, sn32, sn32, xyzw, rgb
-PIPE_FORMAT_R32_SSCALED           , array , 1, 1, s32 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_SSCALED        , array , 1, 1, s32 , s32 ,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_SSCALED     , array , 1, 1, s32 , s32 , s32 ,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_SSCALED  , array , 1, 1, s32 , s32 , s32 , s32 , xyzw, rgb
-PIPE_FORMAT_R32_FIXED             , array , 1, 1, h32 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R32G32_FIXED          , array , 1, 1, h32 , h32 ,     ,     , xy01, rgb
-PIPE_FORMAT_R32G32B32_FIXED       , array , 1, 1, h32 , h32 , h32 ,     , xyz1, rgb
-PIPE_FORMAT_R32G32B32A32_FIXED    , array , 1, 1, h32 , h32 , h32 , h32 , xyzw, rgb
-PIPE_FORMAT_R16_UNORM             , array , 1, 1, un16,     ,     ,     , x001, rgb
-PIPE_FORMAT_R16G16_UNORM          , array , 1, 1, un16, un16,     ,     , xy01, rgb
-PIPE_FORMAT_R16G16B16_UNORM       , array , 1, 1, un16, un16, un16,     , xyz1, rgb
-PIPE_FORMAT_R16G16B16A16_UNORM    , array , 1, 1, un16, un16, un16, un16, xyzw, rgb
-PIPE_FORMAT_R16_USCALED           , array , 1, 1, u16 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R16G16_USCALED        , array , 1, 1, u16 , u16 ,     ,     , xy01, rgb
-PIPE_FORMAT_R16G16B16_USCALED     , array , 1, 1, u16 , u16 , u16 ,     , xyz1, rgb
-PIPE_FORMAT_R16G16B16A16_USCALED  , array , 1, 1, u16 , u16 , u16 , u16 , xyzw, rgb
-PIPE_FORMAT_R16_SNORM             , array , 1, 1, sn16,     ,     ,     , x001, rgb
-PIPE_FORMAT_R16G16_SNORM          , array , 1, 1, sn16, sn16,     ,     , xy01, rgb
-PIPE_FORMAT_R16G16B16_SNORM       , array , 1, 1, sn16, sn16, sn16,     , xyz1, rgb
-PIPE_FORMAT_R16G16B16A16_SNORM    , array , 1, 1, sn16, sn16, sn16, sn16, xyzw, rgb
-PIPE_FORMAT_R16_SSCALED           , array , 1, 1, s16 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R16G16_SSCALED        , array , 1, 1, s16 , s16 ,     ,     , xy01, rgb
-PIPE_FORMAT_R16G16B16_SSCALED     , array , 1, 1, s16 , s16 , s16 ,     , xyz1, rgb
-PIPE_FORMAT_R16G16B16A16_SSCALED  , array , 1, 1, s16 , s16 , s16 , s16 , xyzw, rgb
-PIPE_FORMAT_R8_UNORM              , array , 1, 1, un8 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R8G8_UNORM            , array , 1, 1, un8 , un8 ,     ,     , xy01, rgb
-PIPE_FORMAT_R8_USCALED            , array , 1, 1, u8  ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R8G8_USCALED          , array , 1, 1, u8  , u8  ,     ,     , xy01, rgb
-PIPE_FORMAT_R8G8B8_USCALED        , array , 1, 1, u8  , u8  , u8  ,     , xyz1, rgb
-PIPE_FORMAT_R8G8B8A8_USCALED      , array , 1, 1, u8  , u8  , u8  , u8  , xyzw, rgb
-PIPE_FORMAT_R8_SNORM              , array , 1, 1, sn8 ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R8G8_SNORM            , array , 1, 1, sn8 , sn8 ,     ,     , xy01, rgb
-PIPE_FORMAT_R8G8B8_SNORM          , array , 1, 1, sn8 , sn8 , sn8 ,     , xyz1, rgb
-PIPE_FORMAT_R8G8B8A8_SNORM        , array , 1, 1, sn8 , sn8 , sn8 , sn8 , xyzw, rgb
-PIPE_FORMAT_R8_SSCALED            , array , 1, 1, s8  ,     ,     ,     , x001, rgb
-PIPE_FORMAT_R8G8_SSCALED          , array , 1, 1, s8  , s8  ,     ,     , xy01, rgb
-PIPE_FORMAT_R8G8B8_SSCALED        , array , 1, 1, s8  , s8  , s8  ,     , xyz1, rgb
-PIPE_FORMAT_R8G8B8A8_SSCALED      , array , 1, 1, s8  , s8  , s8  , s8  , xyzw, rgb
+PIPE_FORMAT_R64_FLOAT             , plain, 1, 1, f64 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R64G64_FLOAT          , plain, 1, 1, f64 , f64 ,     ,     , xy01, rgb
+PIPE_FORMAT_R64G64B64_FLOAT       , plain, 1, 1, f64 , f64 , f64 ,     , xyz1, rgb
+PIPE_FORMAT_R64G64B64A64_FLOAT    , plain, 1, 1, f64 , f64 , f64 , f64 , xyzw, rgb
+PIPE_FORMAT_R32_FLOAT             , plain, 1, 1, f32 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_FLOAT          , plain, 1, 1, f32 , f32 ,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_FLOAT       , plain, 1, 1, f32 , f32 , f32 ,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_FLOAT    , plain, 1, 1, f32 , f32 , f32 , f32 , xyzw, rgb
+PIPE_FORMAT_R32_UNORM             , plain, 1, 1, un32,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_UNORM          , plain, 1, 1, un32, un32,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_UNORM       , plain, 1, 1, un32, un32, un32,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_UNORM    , plain, 1, 1, un32, un32, un32, un32, xyzw, rgb
+PIPE_FORMAT_R32_USCALED           , plain, 1, 1, u32 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_USCALED        , plain, 1, 1, u32 , u32 ,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_USCALED     , plain, 1, 1, u32 , u32 , u32 ,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_USCALED  , plain, 1, 1, u32 , u32 , u32 , u32 , xyzw, rgb
+PIPE_FORMAT_R32_SNORM             , plain, 1, 1, sn32,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_SNORM          , plain, 1, 1, sn32, sn32,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_SNORM       , plain, 1, 1, sn32, sn32, sn32,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_SNORM    , plain, 1, 1, sn32, sn32, sn32, sn32, xyzw, rgb
+PIPE_FORMAT_R32_SSCALED           , plain, 1, 1, s32 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_SSCALED        , plain, 1, 1, s32 , s32 ,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_SSCALED     , plain, 1, 1, s32 , s32 , s32 ,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_SSCALED  , plain, 1, 1, s32 , s32 , s32 , s32 , xyzw, rgb
+PIPE_FORMAT_R32_FIXED             , plain, 1, 1, h32 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R32G32_FIXED          , plain, 1, 1, h32 , h32 ,     ,     , xy01, rgb
+PIPE_FORMAT_R32G32B32_FIXED       , plain, 1, 1, h32 , h32 , h32 ,     , xyz1, rgb
+PIPE_FORMAT_R32G32B32A32_FIXED    , plain, 1, 1, h32 , h32 , h32 , h32 , xyzw, rgb
+PIPE_FORMAT_R16_UNORM             , plain, 1, 1, un16,     ,     ,     , x001, rgb
+PIPE_FORMAT_R16G16_UNORM          , plain, 1, 1, un16, un16,     ,     , xy01, rgb
+PIPE_FORMAT_R16G16B16_UNORM       , plain, 1, 1, un16, un16, un16,     , xyz1, rgb
+PIPE_FORMAT_R16G16B16A16_UNORM    , plain, 1, 1, un16, un16, un16, un16, xyzw, rgb
+PIPE_FORMAT_R16_USCALED           , plain, 1, 1, u16 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R16G16_USCALED        , plain, 1, 1, u16 , u16 ,     ,     , xy01, rgb
+PIPE_FORMAT_R16G16B16_USCALED     , plain, 1, 1, u16 , u16 , u16 ,     , xyz1, rgb
+PIPE_FORMAT_R16G16B16A16_USCALED  , plain, 1, 1, u16 , u16 , u16 , u16 , xyzw, rgb
+PIPE_FORMAT_R16_SNORM             , plain, 1, 1, sn16,     ,     ,     , x001, rgb
+PIPE_FORMAT_R16G16_SNORM          , plain, 1, 1, sn16, sn16,     ,     , xy01, rgb
+PIPE_FORMAT_R16G16B16_SNORM       , plain, 1, 1, sn16, sn16, sn16,     , xyz1, rgb
+PIPE_FORMAT_R16G16B16A16_SNORM    , plain, 1, 1, sn16, sn16, sn16, sn16, xyzw, rgb
+PIPE_FORMAT_R16_SSCALED           , plain, 1, 1, s16 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R16G16_SSCALED        , plain, 1, 1, s16 , s16 ,     ,     , xy01, rgb
+PIPE_FORMAT_R16G16B16_SSCALED     , plain, 1, 1, s16 , s16 , s16 ,     , xyz1, rgb
+PIPE_FORMAT_R16G16B16A16_SSCALED  , plain, 1, 1, s16 , s16 , s16 , s16 , xyzw, rgb
+PIPE_FORMAT_R8_UNORM              , plain, 1, 1, un8 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R8G8_UNORM            , plain, 1, 1, un8 , un8 ,     ,     , xy01, rgb
+PIPE_FORMAT_R8_USCALED            , plain, 1, 1, u8  ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R8G8_USCALED          , plain, 1, 1, u8  , u8  ,     ,     , xy01, rgb
+PIPE_FORMAT_R8G8B8_USCALED        , plain, 1, 1, u8  , u8  , u8  ,     , xyz1, rgb
+PIPE_FORMAT_R8G8B8A8_USCALED      , plain, 1, 1, u8  , u8  , u8  , u8  , xyzw, rgb
+PIPE_FORMAT_R8_SNORM              , plain, 1, 1, sn8 ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R8G8_SNORM            , plain, 1, 1, sn8 , sn8 ,     ,     , xy01, rgb
+PIPE_FORMAT_R8G8B8_SNORM          , plain, 1, 1, sn8 , sn8 , sn8 ,     , xyz1, rgb
+PIPE_FORMAT_R8G8B8A8_SNORM        , plain, 1, 1, sn8 , sn8 , sn8 , sn8 , xyzw, rgb
+PIPE_FORMAT_R8_SSCALED            , plain, 1, 1, s8  ,     ,     ,     , x001, rgb
+PIPE_FORMAT_R8G8_SSCALED          , plain, 1, 1, s8  , s8  ,     ,     , xy01, rgb
+PIPE_FORMAT_R8G8B8_SSCALED        , plain, 1, 1, s8  , s8  , s8  ,     , xyz1, rgb
+PIPE_FORMAT_R8G8B8A8_SSCALED      , plain, 1, 1, s8  , s8  , s8  , s8  , xyzw, rgb
 
 # Ambiguous formats
 # FIXME: They are used with different meanings in different places!!!
-PIPE_FORMAT_R8G8B8_UNORM          , arith , 1, 1, un8 , un8 , un8 ,     , zyx1, rgb
-PIPE_FORMAT_R8G8B8A8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , wzyx, rgb
+PIPE_FORMAT_R8G8B8_UNORM          , plain, 1, 1, un8 , un8 , un8 ,     , zyx1, rgb
+PIPE_FORMAT_R8G8B8A8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , wzyx, rgb
 
 # Unused formats
 # XXX: Couldn't find any state tracker using them!!
-PIPE_FORMAT_B6G5R5_SNORM          , arith , 1, 1, sn5 , sn5 , sn6 ,     , xyz1, rgb
-PIPE_FORMAT_R8G8B8X8_SNORM        , arith , 1, 1, sn8 , sn8 , sn8 , sn8 , wzy1, rgb
-PIPE_FORMAT_R8G8B8X8_USCALED      , arith , 1, 1, u8  , u8  , u8  , u8  , wzy1, rgb
-PIPE_FORMAT_R8G8B8X8_SSCALED      , arith , 1, 1, s8  , s8  , s8  , s8  , wzy1, rgb
+PIPE_FORMAT_B6G5R5_SNORM          , plain, 1, 1, sn5 , sn5 , sn6 ,     , xyz1, rgb
+PIPE_FORMAT_R8G8B8X8_SNORM        , plain, 1, 1, sn8 , sn8 , sn8 , sn8 , wzy1, rgb
+PIPE_FORMAT_R8G8B8X8_USCALED      , plain, 1, 1, u8  , u8  , u8  , u8  , wzy1, rgb
+PIPE_FORMAT_R8G8B8X8_SSCALED      , plain, 1, 1, s8  , s8  , s8  , s8  , wzy1, rgb
 # XXX: This one is mentioned in mesa and r300, but not anywhere else. Not sure it is actually needed
-PIPE_FORMAT_R8G8B8X8_UNORM        , arith , 1, 1, un8 , un8 , un8 , un8 , wzy1, rgb
+PIPE_FORMAT_R8G8B8X8_UNORM        , plain, 1, 1, un8 , un8 , un8 , un8 , wzy1, rgb
diff --git a/src/gallium/auxiliary/util/u_format.h b/src/gallium/auxiliary/util/u_format.h
index 7792aa0673..e8fa0022b5 100644
--- a/src/gallium/auxiliary/util/u_format.h
+++ b/src/gallium/auxiliary/util/u_format.h
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright 2009 Vmware, Inc.
+ * Copyright 2009-2010 Vmware, Inc.
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -39,42 +39,32 @@ extern "C" {
 
 
 /**
- * Describe how to best pack/unpack pixels into/from the prescribed format.
+ * Describe how to pack/unpack pixels into/from the prescribed format.
  *
- * These are used for automatic code generation of pixel packing and unpacking
- * routines (in compile time, e.g., u_format_access.py, or in runtime, like
- * llvmpipe does).
- *
- * Thumb rule is: if you're not code generating pixel packing/unpacking then
- * these are irrelevant for you.
- *
- * Note that this can be deduced from other values in util_format_description
- * structure. This is by design, to make code generation of pixel
- * packing/unpacking/sampling routines simple and efficient.
- *
- * XXX: This should be renamed to something like util_format_pack.
+ * XXX: This could be renamed to something like util_format_pack, or broke down
+ * in flags inside util_format_block that said exactly what we want.
  */
 enum util_format_layout {
    /**
-    * One or more components of mixed integer formats, arithmetically encoded
-    * in a word up to 32bits.
+    * Formats with util_format_block::width == util_format_block::height == 1
+    * that can be described as an ordinary data structure.
     */
-   UTIL_FORMAT_LAYOUT_ARITH = 1,
+   UTIL_FORMAT_LAYOUT_PLAIN = 0,
 
    /**
-    * One or more components, no mixed formats, each with equal power of two
-    * number of bytes.
+    * Formats with sub-sampled channels.
+    *
+    * This is for formats like YV12 where there is less than one sample per
+    * pixel.
+    *
+    * XXX: This could actually b
     */
-   UTIL_FORMAT_LAYOUT_ARRAY = 2,
+   UTIL_FORMAT_LAYOUT_SUBSAMPLED = 3,
 
    /**
-    * XXX: Not used yet. These might go away and be replaced by a single entry,
-    * for formats where multiple pixels have to be
-    * read in order to determine a single pixel value (i.e., block.width > 1
-    * || block.height > 1)
+    * An unspecified compression algorithm.
     */
-   UTIL_FORMAT_LAYOUT_YUV = 3,
-   UTIL_FORMAT_LAYOUT_DXT = 4
+   UTIL_FORMAT_LAYOUT_COMPRESSED = 4
 };
 
 
@@ -131,7 +121,12 @@ struct util_format_description
 {
    enum pipe_format format;
    const char *name;
+
+   /**
+    * Pixel block dimensions.
+    */
    struct util_format_block block;
+
    enum util_format_layout layout;
 
    /**
@@ -140,7 +135,7 @@ struct util_format_description
    unsigned nr_channels:3;
 
    /**
-    * Whether all channels have the same number of whole bytes.
+    * Whether all channels have the same number of (whole) bytes.
     */
    unsigned is_array:1;
 
@@ -149,10 +144,27 @@ struct util_format_description
     */
    unsigned is_mixed:1;
 
+   /**
+    * Input channel description.
+    *
+    * Only valid for UTIL_FORMAT_LAYOUT_PLAIN formats.
+    */
    struct util_format_channel_description channel[4];
 
+   /**
+    * Output channel swizzle.
+    *
+    * The order is either:
+    * - RGBA
+    * - YUV(A)
+    * - ZS
+    * depending on the colorspace.
+    */
    unsigned char swizzle[4];
 
+   /**
+    * Colorspace transformation.
+    */
    enum util_format_colorspace colorspace;
 };
 
@@ -192,7 +204,7 @@ util_format_is_compressed(enum pipe_format format)
       return FALSE;
    }
 
-   return desc->layout == UTIL_FORMAT_LAYOUT_DXT ? TRUE : FALSE;
+   return desc->layout == UTIL_FORMAT_LAYOUT_COMPRESSED ? TRUE : FALSE;
 }
 
 static INLINE boolean 
@@ -266,14 +278,7 @@ util_format_get_blockwidth(enum pipe_format format)
       return 1;
    }
 
-   switch (desc->layout) {
-   case UTIL_FORMAT_LAYOUT_YUV:
-      return 2;
-   case UTIL_FORMAT_LAYOUT_DXT:
-      return 4;
-   default:
-      return 1;
-   }
+   return desc->block.width;
 }
 
 static INLINE uint
@@ -286,12 +291,7 @@ util_format_get_blockheight(enum pipe_format format)
       return 1;
    }
 
-   switch (desc->layout) {
-   case UTIL_FORMAT_LAYOUT_DXT:
-      return 4;
-   default:
-      return 1;
-   }
+   return desc->block.height;
 }
 
 static INLINE unsigned
@@ -386,30 +386,14 @@ util_format_has_alpha(enum pipe_format format)
       return FALSE;
    }
 
-   switch (desc->layout) {
-   case UTIL_FORMAT_LAYOUT_ARITH:
-   case UTIL_FORMAT_LAYOUT_ARRAY:
-      /* FIXME: pf_get_component_bits( PIPE_FORMAT_A8L8_UNORM, PIPE_FORMAT_COMP_A ) should not return 0 right? */
-      if (format == PIPE_FORMAT_A8_UNORM ||
-          format == PIPE_FORMAT_A8L8_UNORM ||
-          format == PIPE_FORMAT_A8L8_SRGB) {
-         return TRUE;
-      }
-      return util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_RGB, 3) != 0;
-   case UTIL_FORMAT_LAYOUT_YUV:
+   switch (desc->colorspace) {
+   case UTIL_FORMAT_COLORSPACE_RGB:
+   case UTIL_FORMAT_COLORSPACE_SRGB:
+      return desc->swizzle[3] != UTIL_FORMAT_SWIZZLE_1;
+   case UTIL_FORMAT_COLORSPACE_YUV:
+      return FALSE;
+   case UTIL_FORMAT_COLORSPACE_ZS:
       return FALSE;
-   case UTIL_FORMAT_LAYOUT_DXT:
-      switch (format) {
-      case PIPE_FORMAT_DXT1_RGBA:
-      case PIPE_FORMAT_DXT3_RGBA:
-      case PIPE_FORMAT_DXT5_RGBA:
-      case PIPE_FORMAT_DXT1_SRGBA:
-      case PIPE_FORMAT_DXT3_SRGBA:
-      case PIPE_FORMAT_DXT5_SRGBA:
-         return TRUE;
-      default:
-         return FALSE;
-      }
    default:
       assert(0);
       return FALSE;
diff --git a/src/gallium/auxiliary/util/u_format_access.py b/src/gallium/auxiliary/util/u_format_access.py
index fb85215d20..f7a92f62a8 100644
--- a/src/gallium/auxiliary/util/u_format_access.py
+++ b/src/gallium/auxiliary/util/u_format_access.py
@@ -52,7 +52,7 @@ def is_format_supported(format):
     if format.colorspace not in ('rgb', 'zs'):
         return False
 
-    if format.layout not in (ARITH, ARRAY):
+    if format.layout != PLAIN:
         return False
 
     for i in range(4):
@@ -70,7 +70,7 @@ def is_format_supported(format):
 def native_type(format):
     '''Get the native appropriate for a format.'''
 
-    if format.layout in (ARITH, ARRAY):
+    if format.layout == PLAIN:
         if not format.is_array():
             # For arithmetic pixel formats return the integer type that matches the whole pixel
             return 'uint%u_t' % format.block_size()
@@ -299,7 +299,7 @@ def generate_format_read(format, dst_type, dst_native_type, dst_suffix):
     else:
         assert False
 
-    if format.layout in (ARITH, ARRAY):
+    if format.layout == PLAIN:
         if not format.is_array():
             print '         %s pixel = *src_pixel++;' % src_native_type
             shift = 0;
@@ -374,7 +374,7 @@ def generate_format_write(format, src_type, src_native_type, src_suffix):
 
     inv_swizzle = compute_inverse_swizzle(format)
 
-    if format.layout in (ARITH, ARRAY):
+    if format.layout == PLAIN:
         if not format.is_array():
             print '         %s pixel = 0;' % dst_native_type
             shift = 0;
diff --git a/src/gallium/auxiliary/util/u_format_parse.py b/src/gallium/auxiliary/util/u_format_parse.py
index 248a26ea8c..983c3a90fc 100755
--- a/src/gallium/auxiliary/util/u_format_parse.py
+++ b/src/gallium/auxiliary/util/u_format_parse.py
@@ -37,8 +37,7 @@ VOID, UNSIGNED, SIGNED, FIXED, FLOAT = range(5)
 
 SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_W, SWIZZLE_0, SWIZZLE_1, SWIZZLE_NONE, = range(7)
 
-ARITH = 'arith'
-ARRAY = 'array'
+PLAIN = 'plain'
 
 
 class Type: