[Mesa-dev] [PATCH 3/5] gallium: add initial pure integer support (v2)

Jose Fonseca jfonseca at vmware.com
Fri Oct 7 13:48:06 PDT 2011


Looks good overall. Comments inline.

----- Original Message -----
> From: Dave Airlie <airlied at redhat.com>
> 
> This add support for unsigned/signed integer types via adding a
> 'pure' bit
> in the format description table. It adds 4 new u_format get/put
> hooks,
> for get/put uint and get/put sint so that accessors can get native
> access
> to the integer bits. This is used to avoid precision loss via float
> converting
> paths.
> 
> It doesn't add any float fetchers for these types at the moment, GL
> doesn't
> require float fetching from these types and I expect we'll introduce
> a lot
> of hidden bugs if we start allowing such conversions without an API
> mandating
> it.

I'm Ok with this for the time being, but as I said when we discussed this, the ability of converting to/from floats is useful for debugging/visualization and to emulate unsupported formats.

> It adds all formats from EXT_texture_integer and EXT_texture_rg.
> 
> 0 regressions on llvmpipe here with this.
> 
> (there is some more follow on code in my gallium-int-work branch,
> bringing
>  softpipe and mesa to a pretty integer clean state)
> 
> v2: fixup python generator to get signed->unsigned and
> unsigned->signed
> fetches working.
> 
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
>  src/gallium/auxiliary/util/u_format.c        |  139
>  ++++++++++++++++++++++++++
>  src/gallium/auxiliary/util/u_format.csv      |   61 +++++++++++
>  src/gallium/auxiliary/util/u_format.h        |   66 ++++++++++++-
>  src/gallium/auxiliary/util/u_format_pack.py  |   70 +++++++++++--
>  src/gallium/auxiliary/util/u_format_parse.py |   18 +++-
>  src/gallium/auxiliary/util/u_format_table.py |   23 ++++-
>  src/gallium/auxiliary/util/u_tile.c          |  138
>  +++++++++++++++++++++++++
>  src/gallium/auxiliary/util/u_tile.h          |   39 +++++++
>  src/gallium/drivers/llvmpipe/lp_tile_soa.py  |    2 +-
>  src/gallium/include/pipe/p_format.h          |   59 +++++++++++
>  10 files changed, 595 insertions(+), 20 deletions(-)
> 
> diff --git a/src/gallium/auxiliary/util/u_format.c
> b/src/gallium/auxiliary/util/u_format.c
> index 9bf4258..045cf94 100644
> --- a/src/gallium/auxiliary/util/u_format.c
> +++ b/src/gallium/auxiliary/util/u_format.c
> @@ -124,6 +124,62 @@ util_format_is_luminance(enum pipe_format
> format)
>     return FALSE;
>  }
>  
> +boolean
> +util_format_is_pure_integer(enum pipe_format format)
> +{
> +   const struct util_format_description *desc =
> util_format_description(format);
> +   int i;
> +   /* Find the first non-void channel. */
> +   for (i = 0; i < 4; i++) {
> +      if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
> +         break;
> +      }
> +   }
> +
> +   if (i == 4) {
> +      return FALSE;
> +   }
> +
> +   return desc->channel[i].pure_integer ? TRUE : FALSE;
> +}
> +
> +boolean
> +util_format_is_pure_sint(enum pipe_format format)
> +{
> +   const struct util_format_description *desc =
> util_format_description(format);
> +   int i;
> +   /* Find the first non-void channel. */
> +   for (i = 0; i < 4; i++) {
> +      if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
> +         break;
> +      }
> +   }
> +
> +   if (i == 4) {
> +      return FALSE;
> +   }
> +
> +   return (desc->channel[i].type == UTIL_FORMAT_TYPE_SIGNED &&
> desc->channel[i].pure_integer) ? TRUE : FALSE;
> +}
> +
> +boolean
> +util_format_is_pure_uint(enum pipe_format format)
> +{
> +   const struct util_format_description *desc =
> util_format_description(format);
> +   int i;
> +   /* Find the first non-void channel. */
> +   for (i = 0; i < 4; i++) {
> +      if (desc->channel[i].type != UTIL_FORMAT_TYPE_VOID) {
> +         break;
> +      }
> +   }
> +
> +   if (i == 4) {
> +      return FALSE;
> +   }
> +
> +   return (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED &&
> desc->channel[i].pure_integer) ? TRUE : FALSE;
> +}

Please refactor out the duplicated code in the above three functions into a common function.

>  boolean
>  util_format_is_luminance_alpha(enum pipe_format format)
> @@ -262,6 +318,89 @@ util_format_write_4ub(enum pipe_format format,
> const uint8_t *src, unsigned src_
>     format_desc->pack_rgba_8unorm(dst_row, dst_stride, src_row,
>     src_stride, w, h);
>  }
>  
> +void
> +util_format_read_4ui(enum pipe_format format,
> +                     unsigned *dst, unsigned dst_stride,
> +                     const void *src, unsigned src_stride,
> +                     unsigned x, unsigned y, unsigned w, unsigned h)
> +{
> +   const struct util_format_description *format_desc;
> +   const uint8_t *src_row;
> +   unsigned *dst_row;
> +
> +   format_desc = util_format_description(format);
> +
> +   assert(x % format_desc->block.width == 0);
> +   assert(y % format_desc->block.height == 0);
> +
> +   src_row = (const uint8_t *)src + y*src_stride +
> x*(format_desc->block.bits/8);
> +   dst_row = dst;
> +
> +   format_desc->unpack_rgba_uint(dst_row, dst_stride, src_row,
> src_stride, w, h);
> +}
> +
> +void
> +util_format_write_4ui(enum pipe_format format,
> +                      const unsigned int *src, unsigned src_stride,
> +                      void *dst, unsigned dst_stride,
> +                      unsigned x, unsigned y, unsigned w, unsigned
> h)
> +{
> +   const struct util_format_description *format_desc;
> +   uint8_t *dst_row;
> +   const unsigned *src_row;
> +
> +   format_desc = util_format_description(format);
> +
> +   assert(x % format_desc->block.width == 0);
> +   assert(y % format_desc->block.height == 0);
> +
> +   dst_row = (uint8_t *)dst + y*dst_stride +
> x*(format_desc->block.bits/8);
> +   src_row = src;
> +
> +   format_desc->pack_rgba_uint(dst_row, dst_stride, src_row,
> src_stride, w, h);
> +}
> +
> +void
> +util_format_read_4i(enum pipe_format format,
> +                    int *dst, unsigned dst_stride,
> +                    const void *src, unsigned src_stride,
> +                    unsigned x, unsigned y, unsigned w, unsigned h)
> +{
> +   const struct util_format_description *format_desc;
> +   const uint8_t *src_row;
> +   int *dst_row;
> +
> +   format_desc = util_format_description(format);
> +
> +   assert(x % format_desc->block.width == 0);
> +   assert(y % format_desc->block.height == 0);
> +
> +   src_row = (const uint8_t *)src + y*src_stride +
> x*(format_desc->block.bits/8);
> +   dst_row = dst;
> +
> +   format_desc->unpack_rgba_sint(dst_row, dst_stride, src_row,
> src_stride, w, h);
> +}
> +
> +void
> +util_format_write_4i(enum pipe_format format,
> +                      const int *src, unsigned src_stride,
> +                      void *dst, unsigned dst_stride,
> +                      unsigned x, unsigned y, unsigned w, unsigned
> h)
> +{
> +   const struct util_format_description *format_desc;
> +   uint8_t *dst_row;
> +   const int *src_row;
> +
> +   format_desc = util_format_description(format);
> +
> +   assert(x % format_desc->block.width == 0);
> +   assert(y % format_desc->block.height == 0);
> +
> +   dst_row = (uint8_t *)dst + y*dst_stride +
> x*(format_desc->block.bits/8);
> +   src_row = src;
> +
> +   format_desc->pack_rgba_sint(dst_row, dst_stride, src_row,
> src_stride, w, h);
> +}
>  
>  boolean
>  util_is_format_compatible(const struct util_format_description
>  *src_desc,
> diff --git a/src/gallium/auxiliary/util/u_format.csv
> b/src/gallium/auxiliary/util/u_format.csv
> index 621a46d..08aa0a4 100644
> --- a/src/gallium/auxiliary/util/u_format.csv
> +++ b/src/gallium/auxiliary/util/u_format.csv
> @@ -42,6 +42,7 @@
>  #     - 'h': fixed
>  #     - 'f': FLOAT
>  #   - optionally followed by 'n' if it is normalized
> +#   - optionally followed by 'p' if it is pure
>  #   - number of bits
>  # - channel swizzle
>  # - color space: rgb, yub, sz
> @@ -278,3 +279,63 @@ PIPE_FORMAT_R10G10B10A2_SNORM       , plain, 1,
> 1, sn10, sn10, sn10, sn2, xyzw,
>  PIPE_FORMAT_B10G10R10A2_USCALED     , plain, 1, 1, u10, u10, u10,
>  u2, zyxw, rgb
>  PIPE_FORMAT_B10G10R10A2_SSCALED     , plain, 1, 1, s10, s10, s10,
>  s2, zyxw, rgb
>  PIPE_FORMAT_B10G10R10A2_SNORM       , plain, 1, 1, sn10, sn10, sn10,
>  sn2, zyxw, rgb
> +
> +PIPE_FORMAT_R8_UINT                 , plain, 1, 1, up8, , , , x001,
> rgb
> +PIPE_FORMAT_R8G8_UINT               , plain, 1, 1, up8, up8, , ,
> xy01, rgb
> +PIPE_FORMAT_R8G8B8_UINT             , plain, 1, 1, up8, up8, up8, ,
> xyz1, rgb
> +PIPE_FORMAT_R8G8B8A8_UINT           , plain, 1, 1, up8, up8, up8,
> up8, xyzw, rgb
> +
> +PIPE_FORMAT_R8_SINT                 , plain, 1, 1, sp8, , , , x001,
> rgb
> +PIPE_FORMAT_R8G8_SINT               , plain, 1, 1, sp8, sp8, , ,
> xy01, rgb
> +PIPE_FORMAT_R8G8B8_SINT             , plain, 1, 1, sp8, sp8, sp8, ,
> xyz1, rgb
> +PIPE_FORMAT_R8G8B8A8_SINT           , plain, 1, 1, sp8, sp8, sp8,
> sp8, xyzw, rgb
> +
> +PIPE_FORMAT_R16_UINT                , plain, 1, 1, up16, , , , x001,
> rgb
> +PIPE_FORMAT_R16G16_UINT             , plain, 1, 1, up16, up16, , ,
> xy01, rgb
> +PIPE_FORMAT_R16G16B16_UINT          , plain, 1, 1, up16, up16, up16,
> , xyz1, rgb
> +PIPE_FORMAT_R16G16B16A16_UINT       , plain, 1, 1, up16, up16, up16,
> up16, xyzw, rgb
> +
> +PIPE_FORMAT_R16_SINT                , plain, 1, 1, sp16, , , , x001,
> rgb
> +PIPE_FORMAT_R16G16_SINT             , plain, 1, 1, sp16, sp16, , ,
> xy01, rgb
> +PIPE_FORMAT_R16G16B16_SINT          , plain, 1, 1, sp16, sp16, sp16,
> , xyz1, rgb
> +PIPE_FORMAT_R16G16B16A16_SINT       , plain, 1, 1, sp16, sp16, sp16,
> sp16, xyzw, rgb
> +
> +PIPE_FORMAT_R32_UINT                , plain, 1, 1, up32, , , , x001,
> rgb
> +PIPE_FORMAT_R32G32_UINT             , plain, 1, 1, up32, up32, , ,
> xy01, rgb
> +PIPE_FORMAT_R32G32B32_UINT          , plain, 1, 1, up32, up32, up32,
> , xyz1, rgb
> +PIPE_FORMAT_R32G32B32A32_UINT       , plain, 1, 1, up32, up32, up32,
> up32, xyzw, rgb
> +
> +PIPE_FORMAT_R32_SINT                , plain, 1, 1, sp32, , , , x001,
> rgb
> +PIPE_FORMAT_R32G32_SINT             , plain, 1, 1, sp32, sp32, , ,
> xy01, rgb
> +PIPE_FORMAT_R32G32B32_SINT          , plain, 1, 1, sp32, sp32, sp32,
> , xyz1, rgb
> +PIPE_FORMAT_R32G32B32A32_SINT       , plain, 1, 1, sp32, sp32, sp32,
> sp32, xyzw, rgb
> +
> +PIPE_FORMAT_A8_UINT                 , plain, 1, 1, up8, , , , 000x,
> rgb
> +PIPE_FORMAT_I8_UINT                 , plain, 1, 1, up8, , , , xxxx,
> rgb
> +PIPE_FORMAT_L8_UINT                 , plain, 1, 1, up8, , , , xxx1,
> rgb
> +PIPE_FORMAT_L8A8_UINT               , plain, 1, 1, up8, up8, , ,
> xxxy, rgb
> +
> +PIPE_FORMAT_A8_SINT                 , plain, 1, 1, sp8, , , , 000x,
> rgb
> +PIPE_FORMAT_I8_SINT                 , plain, 1, 1, sp8, , , , xxxx,
> rgb
> +PIPE_FORMAT_L8_SINT                 , plain, 1, 1, sp8, , , , xxx1,
> rgb
> +PIPE_FORMAT_L8A8_SINT               , plain, 1, 1, sp8, sp8, , ,
> xxxy, rgb
> +
> +PIPE_FORMAT_A16_UINT                , plain, 1, 1, up16, , , , 000x,
> rgb
> +PIPE_FORMAT_I16_UINT                , plain, 1, 1, up16, , , , xxxx,
> rgb
> +PIPE_FORMAT_L16_UINT                , plain, 1, 1, up16, , , , xxx1,
> rgb
> +PIPE_FORMAT_L16A16_UINT             , plain, 1, 1, up16, up16, , ,
> xxxy, rgb
> +
> +PIPE_FORMAT_A16_SINT                , plain, 1, 1, sp16, , , , 000x,
> rgb
> +PIPE_FORMAT_I16_SINT                , plain, 1, 1, sp16, , , , xxxx,
> rgb
> +PIPE_FORMAT_L16_SINT                , plain, 1, 1, sp16, , , , xxx1,
> rgb
> +PIPE_FORMAT_L16A16_SINT             , plain, 1, 1, sp16, sp16, , ,
> xxxy, rgb
> +
> +PIPE_FORMAT_A32_UINT                , plain, 1, 1, up32, , , , 000x,
> rgb
> +PIPE_FORMAT_I32_UINT                , plain, 1, 1, up32, , , , xxxx,
> rgb
> +PIPE_FORMAT_L32_UINT                , plain, 1, 1, up32, , , , xxx1,
> rgb
> +PIPE_FORMAT_L32A32_UINT             , plain, 1, 1, up32, up32, , ,
> xxxy, rgb
> +
> +PIPE_FORMAT_A32_SINT                , plain, 1, 1, sp32, , , , 000x,
> rgb
> +PIPE_FORMAT_I32_SINT                , plain, 1, 1, sp32, , , , xxxx,
> rgb
> +PIPE_FORMAT_L32_SINT                , plain, 1, 1, sp32, , , , xxx1,
> rgb
> +PIPE_FORMAT_L32A32_SINT             , plain, 1, 1, sp32, sp32, , ,
> xxxy, rgb
> \ No newline at end of file
> diff --git a/src/gallium/auxiliary/util/u_format.h
> b/src/gallium/auxiliary/util/u_format.h
> index 98528ea..4f5059a 100644
> --- a/src/gallium/auxiliary/util/u_format.h
> +++ b/src/gallium/auxiliary/util/u_format.h
> @@ -120,8 +120,9 @@ enum util_format_colorspace {
>  
>  struct util_format_channel_description
>  {
> -   unsigned type:6;        /**< UTIL_FORMAT_TYPE_x */
> +   unsigned type:5;        /**< UTIL_FORMAT_TYPE_x */
>     unsigned normalized:1;
> +   unsigned pure_integer:1;
>     unsigned size:9;        /**< bits per channel */
>  };
>  
> @@ -321,6 +322,37 @@ struct util_format_description
>                        const uint8_t *src, unsigned src_stride,
>                        unsigned width, unsigned height);
>  
> +  /**
> +    * Unpack pixel blocks to R32G32B32A32_UINT.
> +    * Note: strides are in bytes.
> +    *
> +    * Only defined for INT formats.
> +    */
> +   void
> +   (*unpack_rgba_uint)(unsigned *dst, unsigned dst_stride,
> +                       const uint8_t *src, unsigned src_stride,
> +                       unsigned width, unsigned height);
> +
> +   void
> +   (*pack_rgba_uint)(uint8_t *dst, unsigned dst_stride,
> +                     const unsigned *src, unsigned src_stride,
> +                     unsigned width, unsigned height);
> +
> +  /**
> +    * Unpack pixel blocks to R32G32B32A32_SINT.
> +    * Note: strides are in bytes.
> +    *
> +    * Only defined for INT formats.
> +    */
> +   void
> +   (*unpack_rgba_sint)(signed *dst, unsigned dst_stride,
> +                       const uint8_t *src, unsigned src_stride,
> +                       unsigned width, unsigned height);
> +
> +   void
> +   (*pack_rgba_sint)(uint8_t *dst, unsigned dst_stride,
> +                     const int *src, unsigned src_stride,
> +                     unsigned width, unsigned height);
>  };
>  
>  
> @@ -511,6 +543,14 @@ util_format_is_luminance_alpha(enum pipe_format
> format);
>  boolean
>  util_format_is_intensity(enum pipe_format format);
>  
> +boolean
> +util_format_is_pure_integer(enum pipe_format format);
> +
> +boolean
> +util_format_is_pure_sint(enum pipe_format format);
> +
> +boolean
> +util_format_is_pure_uint(enum pipe_format format);
>  
>  /**
>   * Whether the src format can be blitted to destation format with a
>   simple
> @@ -834,6 +874,30 @@ util_format_write_4ub(enum pipe_format format,
>                        void *dst, unsigned dst_stride,
>                        unsigned x, unsigned y, unsigned w, unsigned
>                        h);
>  
> +void
> +util_format_read_4ui(enum pipe_format format,
> +                     unsigned *dst, unsigned dst_stride,
> +                     const void *src, unsigned src_stride,
> +                     unsigned x, unsigned y, unsigned w, unsigned
> h);
> +
> +void
> +util_format_write_4ui(enum pipe_format format,
> +                      const unsigned int *src, unsigned src_stride,
> +                      void *dst, unsigned dst_stride,
> +                      unsigned x, unsigned y, unsigned w, unsigned
> h);
> +
> +void
> +util_format_read_4i(enum pipe_format format,
> +                    int *dst, unsigned dst_stride,
> +                    const void *src, unsigned src_stride,
> +                    unsigned x, unsigned y, unsigned w, unsigned h);
> +
> +void
> +util_format_write_4i(enum pipe_format format,
> +                     const int *src, unsigned src_stride,
> +                     void *dst, unsigned dst_stride,
> +                     unsigned x, unsigned y, unsigned w, unsigned
> h);
> +
>  /*
>   * Generic format conversion;
>   */
> diff --git a/src/gallium/auxiliary/util/u_format_pack.py
> b/src/gallium/auxiliary/util/u_format_pack.py
> index cc173f8..5cfbe32 100644
> --- a/src/gallium/auxiliary/util/u_format_pack.py
> +++ b/src/gallium/auxiliary/util/u_format_pack.py
> @@ -126,6 +126,26 @@ def is_format_supported(format):
>  
>      return True
>  
> +def is_format_pure_unsigned(format):
> +    for i in range(4):
> +        channel = format.channels[i]
> +        if channel.type not in (VOID, UNSIGNED):
> +            return False
> +        if channel.type == UNSIGNED and channel.pure == False:
> +            return False
> +
> +    return True
> +
> +
> +def is_format_pure_signed(format):
> +    for i in range(4):
> +        channel = format.channels[i]
> +        if channel.type not in (VOID, SIGNED):
> +            return False
> +        if channel.type == SIGNED and channel.pure == False:
> +            return False
> +
> +    return True
>  
>  def native_type(format):
>      '''Get the native appropriate for a format.'''
> @@ -290,6 +310,7 @@ def conversion_expr(src_channel,
>      src_type = src_channel.type
>      src_size = src_channel.size
>      src_norm = src_channel.norm
> +    src_pure = src_channel.pure
>  
>      # Promote half to float
>      if src_type == FLOAT and src_size == 16:
> @@ -653,18 +674,45 @@ def generate(formats):
>              if is_format_supported(format):
>                  generate_format_type(format)
>  
> -            channel = Channel(FLOAT, False, 32)
> -            native_type = 'float'
> -            suffix = 'rgba_float'
> +            if is_format_pure_unsigned(format):
> +                native_type = 'unsigned'
> +                suffix = 'unsigned'
> +                channel = Channel(UNSIGNED, False, True, 32)
> +
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
> +
> +                channel = Channel(SIGNED, False, True, 32)
> +                native_type = 'int'
> +                suffix = 'signed'
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
> +            elif is_format_pure_signed(format):
> +                native_type = 'int'
> +                suffix = 'signed'
> +                channel = Channel(SIGNED, False, True, 32)
> +
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
> +
> +                native_type = 'unsigned'
> +                suffix = 'unsigned'
> +                channel = Channel(UNSIGNED, False, True, 32)
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
> +            else:
> +                channel = Channel(FLOAT, False, False, 32)
> +                native_type = 'float'
> +                suffix = 'rgba_float'
>  
> -            generate_format_unpack(format, channel, native_type,
> suffix)
> -            generate_format_pack(format, channel, native_type,
> suffix)
> -            generate_format_fetch(format, channel, native_type,
> suffix)
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
> +                generate_format_fetch(format, channel, native_type,
> suffix)
>  
> -            channel = Channel(UNSIGNED, True, 8)
> -            native_type = 'uint8_t'
> -            suffix = 'rgba_8unorm'
> +                channel = Channel(UNSIGNED, True, False, 8)
> +                native_type = 'uint8_t'
> +                suffix = 'rgba_8unorm'
>  
> -            generate_format_unpack(format, channel, native_type,
> suffix)
> -            generate_format_pack(format, channel, native_type,
> suffix)
> +                generate_format_unpack(format, channel, native_type,
> suffix)
> +                generate_format_pack(format, channel, native_type,
> suffix)
>  
> diff --git a/src/gallium/auxiliary/util/u_format_parse.py
> b/src/gallium/auxiliary/util/u_format_parse.py
> index ddb9f24..73a4bcb 100755
> --- a/src/gallium/auxiliary/util/u_format_parse.py
> +++ b/src/gallium/auxiliary/util/u_format_parse.py
> @@ -52,9 +52,10 @@ VERY_LARGE = 99999999999999999999999
>  class Channel:
>      '''Describe the channel of a color channel.'''
>      
> -    def __init__(self, type, norm, size, name = ''):
> +    def __init__(self, type, norm, pure, size, name = ''):
>          self.type = type
>          self.norm = norm
> +        self.pure = pure
>          self.size = size
>          self.sign = type in (SIGNED, FIXED, FLOAT)
>          self.name = name
> @@ -63,11 +64,13 @@ class Channel:
>          s = str(self.type)
>          if self.norm:
>              s += 'n'
> +        if self.pure:
> +            s += 'p'
>          s += str(self.size)
>          return s
>  
>      def __eq__(self, other):
> -        return self.type == other.type and self.norm == other.norm
> and self.size == other.size
> +        return self.type == other.type and self.norm == other.norm
> and self.pure == other.pure and self.size == other.size
>  
>      def max(self):
>          '''Maximum representable number.'''
> @@ -158,6 +161,8 @@ class Format:
>                      return True
>                  if channel.norm != ref_channel.norm:
>                      return True
> +                if channel.pure != ref_channel.pure:
> +                    return True
>          return False
>  
>      def is_pot(self):
> @@ -274,15 +279,22 @@ def parse(filename):
>                  type = _type_parse_map[field[0]]
>                  if field[1] == 'n':
>                      norm = True
> +                    pure = False
> +                    size = int(field[2:])
> +                elif field[1] == 'p':
> +                    pure = True
> +                    norm = False
>                      size = int(field[2:])
>                  else:
>                      norm = False
> +                    pure = False
>                      size = int(field[1:])
>              else:
>                  type = VOID
>                  norm = False
> +                pure = False
>                  size = 0
> -            channel = Channel(type, norm, size, names[i])
> +            channel = Channel(type, norm, pure, size, names[i])
>              channels.append(channel)
>  
>          format = Format(name, layout, block_width, block_height,
>          channels, swizzles, colorspace)
> diff --git a/src/gallium/auxiliary/util/u_format_table.py
> b/src/gallium/auxiliary/util/u_format_table.py
> index 55e0f78..6c00b0d 100755
> --- a/src/gallium/auxiliary/util/u_format_table.py
> +++ b/src/gallium/auxiliary/util/u_format_table.py
> @@ -113,7 +113,7 @@ def write_format_table(formats):
>              else:
>                  sep = ""
>              if channel.size:
> -                print "      {%s, %s, %u}%s\t/* %s = %s */" %
> (type_map[channel.type], bool_map(channel.norm), channel.size, sep,
> "xyzw"[i], channel.name)
> +                print "      {%s, %s, %s, %u}%s\t/* %s = %s */" %
> (type_map[channel.type], bool_map(channel.norm),
> bool_map(channel.pure), channel.size, sep, "xyzw"[i], channel.name)
>              else:
>                  print "      {0, 0, 0}%s" % (sep,)
>          print "   },"
> @@ -131,7 +131,7 @@ def write_format_table(formats):
>              print "      %s%s\t/* %s */" % (swizzle_map[swizzle],
>              sep, comment)
>          print "   },"
>          print "   %s," % (colorspace_map(format.colorspace),)
> -        if format.colorspace != ZS:
> +        if format.colorspace != ZS and format.channels[0].pure ==
> False:
>              print "   &util_format_%s_unpack_rgba_8unorm," %
>              format.short_name()
>              print "   &util_format_%s_pack_rgba_8unorm," %
>              format.short_name()
>              if format.layout == 's3tc' or format.layout == 'rgtc':
> @@ -160,10 +160,25 @@ def write_format_table(formats):
>              print "   NULL, /* pack_z_float */"
>          if format.colorspace == ZS and format.swizzles[1] !=
>          SWIZZLE_NONE:
>              print "   &util_format_%s_unpack_s_8uscaled," %
>              format.short_name()
> -            print "   &util_format_%s_pack_s_8uscaled" %
> format.short_name()
> +            print "   &util_format_%s_pack_s_8uscaled," %
> format.short_name()
>          else:
>              print "   NULL, /* unpack_s_8uscaled */"
> -            print "   NULL /* pack_s_8uscaled */"
> +            print "   NULL, /* pack_s_8uscaled */"
> +        if format.channels[0].pure == True and
> format.channels[0].type == UNSIGNED:
> +            print "   &util_format_%s_unpack_unsigned, /*
> unpack_rgba_uint */" % format.short_name()
> +            print "   &util_format_%s_pack_unsigned, /*
> pack_rgba_uint */" % format.short_name()
> +            print "   &util_format_%s_unpack_signed, /*
> unpack_rgba_sint */" % format.short_name()
> +            print "   &util_format_%s_pack_signed  /* pack_rgba_sint
> */" % format.short_name()
> +        elif format.channels[0].pure == True and
> format.channels[0].type == SIGNED:
> +            print "   &util_format_%s_unpack_unsigned, /*
> unpack_rgba_uint */" % format.short_name()
> +            print "   &util_format_%s_pack_unsigned, /*
> pack_rgba_uint */" % format.short_name()
> +            print "   &util_format_%s_unpack_signed, /*
> unpack_rgba_sint */" % format.short_name()
> +            print "   &util_format_%s_pack_signed  /* pack_rgba_sint
> */" % format.short_name()
> +        else:
> +            print "   NULL, /* unpack_rgba_uint */"
> +            print "   NULL, /* pack_rgba_uint */"
> +            print "   NULL, /* unpack_rgba_sint */"
> +            print "   NULL  /* pack_rgba_sint */"
>          print "};"
>          print
>          
> diff --git a/src/gallium/auxiliary/util/u_tile.c
> b/src/gallium/auxiliary/util/u_tile.c
> index 23f12e5..6342bfb 100644
> --- a/src/gallium/auxiliary/util/u_tile.c
> +++ b/src/gallium/auxiliary/util/u_tile.c
> @@ -389,6 +389,29 @@ pipe_tile_raw_to_rgba(enum pipe_format format,
>     }
>  }
>  
> +void
> +pipe_tile_raw_to_unsigned(enum pipe_format format,
> +                          void *src,
> +                          uint w, uint h,
> +                          unsigned *dst, unsigned dst_stride)
> +{
> +  util_format_read_4ui(format,
> +                       dst, dst_stride * sizeof(float),
> +                       src, util_format_get_stride(format, w),
> +                       0, 0, w, h);
> +}
> +
> +void
> +pipe_tile_raw_to_signed(enum pipe_format format,
> +                          void *src,
> +                          uint w, uint h,
> +                          int *dst, unsigned dst_stride)
> +{
> +  util_format_read_4i(format,
> +                      dst, dst_stride * sizeof(float),
> +                      src, util_format_get_stride(format, w),
> +                      0, 0, w, h);
> +}
>  
>  void
>  pipe_get_tile_rgba(struct pipe_context *pipe,
> @@ -492,6 +515,61 @@ pipe_put_tile_rgba_format(struct pipe_context
> *pipe,
>     FREE(packed);
>  }
>  
> +void
> +pipe_put_tile_i_format(struct pipe_context *pipe,
> +                       struct pipe_transfer *pt,
> +                       uint x, uint y, uint w, uint h,
> +                       enum pipe_format format,
> +                       const int *p)
> +{
> +   unsigned src_stride = w * 4;
> +   void *packed;
> +
> +   if (u_clip_tile(x, y, &w, &h, &pt->box))
> +      return;
> +
> +   packed = MALLOC(util_format_get_nblocks(format, w, h) *
> util_format_get_blocksize(format));
> +
> +   if (!packed)
> +      return;
> +
> +   util_format_write_4i(format,
> +                        p, src_stride * sizeof(float),
> +                        packed, util_format_get_stride(format, w),
> +                        0, 0, w, h);
> +
> +   pipe_put_tile_raw(pipe, pt, x, y, w, h, packed, 0);
> +
> +   FREE(packed);
> +}
> +
> +void
> +pipe_put_tile_ui_format(struct pipe_context *pipe,
> +                        struct pipe_transfer *pt,
> +                        uint x, uint y, uint w, uint h,
> +                        enum pipe_format format,
> +                        const unsigned int *p)
> +{
> +   unsigned src_stride = w * 4;
> +   void *packed;
> +
> +   if (u_clip_tile(x, y, &w, &h, &pt->box))
> +      return;
> +
> +   packed = MALLOC(util_format_get_nblocks(format, w, h) *
> util_format_get_blocksize(format));
> +
> +   if (!packed)
> +      return;
> +
> +   util_format_write_4ui(format,
> +                         p, src_stride * sizeof(float),
> +                         packed, util_format_get_stride(format, w),
> +                         0, 0, w, h);
> +
> +   pipe_put_tile_raw(pipe, pt, x, y, w, h, packed, 0);
> +
> +   FREE(packed);
> +}
>  
>  /**
>   * Get a block of Z values, converted to 32-bit range.
> @@ -688,3 +766,63 @@ pipe_put_tile_z(struct pipe_context *pipe,
>  }
>  
>  
> +void
> +pipe_get_tile_ui_format(struct pipe_context *pipe,
> +                        struct pipe_transfer *pt,
> +                        uint x, uint y, uint w, uint h,
> +                        enum pipe_format format,
> +                        unsigned int *p)
> +{
> +   unsigned dst_stride = w * 4;
> +   void *packed;
> +
> +   if (u_clip_tile(x, y, &w, &h, &pt->box)) {
> +      return;
> +   }
> +
> +   packed = MALLOC(util_format_get_nblocks(format, w, h) *
> util_format_get_blocksize(format));
> +   if (!packed) {
> +      return;
> +   }
> +
> +   if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
> +      assert((x & 1) == 0);
> +   }
> +
> +   pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
> +
> +   pipe_tile_raw_to_unsigned(format, packed, w, h, p, dst_stride);
> +
> +   FREE(packed);
> +}
> +
> +
> +void
> +pipe_get_tile_i_format(struct pipe_context *pipe,
> +                       struct pipe_transfer *pt,
> +                       uint x, uint y, uint w, uint h,
> +                       enum pipe_format format,
> +                       int *p)
> +{
> +   unsigned dst_stride = w * 4;
> +   void *packed;
> +
> +   if (u_clip_tile(x, y, &w, &h, &pt->box)) {
> +      return;
> +   }
> +
> +   packed = MALLOC(util_format_get_nblocks(format, w, h) *
> util_format_get_blocksize(format));
> +   if (!packed) {
> +      return;
> +   }
> +
> +   if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
> +      assert((x & 1) == 0);
> +   }
> +
> +   pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
> +
> +   pipe_tile_raw_to_signed(format, packed, w, h, p, dst_stride);
> +
> +   FREE(packed);
> +}
> diff --git a/src/gallium/auxiliary/util/u_tile.h
> b/src/gallium/auxiliary/util/u_tile.h
> index 0ba2743..926f169 100644
> --- a/src/gallium/auxiliary/util/u_tile.h
> +++ b/src/gallium/auxiliary/util/u_tile.h
> @@ -118,6 +118,45 @@ pipe_tile_raw_to_rgba(enum pipe_format format,
>                        uint w, uint h,
>                        float *dst, unsigned dst_stride);
>  
> +void
> +pipe_tile_raw_to_unsigned(enum pipe_format format,
> +                          void *src,
> +                          uint w, uint h,
> +                          unsigned *dst, unsigned dst_stride);
> +
> +void
> +pipe_tile_raw_to_signed(enum pipe_format format,
> +                        void *src,
> +                        uint w, uint h,
> +                        int *dst, unsigned dst_stride);
> +
> +void
> +pipe_get_tile_ui_format(struct pipe_context *pipe,
> +                        struct pipe_transfer *pt,
> +                        uint x, uint y, uint w, uint h,
> +                        enum pipe_format format,
> +                        unsigned int *p);
> +
> +void
> +pipe_get_tile_i_format(struct pipe_context *pipe,
> +                       struct pipe_transfer *pt,
> +                       uint x, uint y, uint w, uint h,
> +                       enum pipe_format format,
> +                       int *p);
> +
> +void
> +pipe_put_tile_ui_format(struct pipe_context *pipe,
> +                        struct pipe_transfer *pt,
> +                        uint x, uint y, uint w, uint h,
> +                        enum pipe_format format,
> +                        const unsigned *p);
> +
> +void
> +pipe_put_tile_i_format(struct pipe_context *pipe,
> +                       struct pipe_transfer *pt,
> +                       uint x, uint y, uint w, uint h,
> +                       enum pipe_format format,
> +                       const int *p);
>  
>  #ifdef __cplusplus
>  }
> diff --git a/src/gallium/drivers/llvmpipe/lp_tile_soa.py
> b/src/gallium/drivers/llvmpipe/lp_tile_soa.py
> index a2795b6..706411c 100644
> --- a/src/gallium/drivers/llvmpipe/lp_tile_soa.py
> +++ b/src/gallium/drivers/llvmpipe/lp_tile_soa.py
> @@ -612,7 +612,7 @@ def main():
>  
>      generate_sse2()
>  
> -    channel = Channel(UNSIGNED, True, 8)
> +    channel = Channel(UNSIGNED, True, False, 8)
>      native_type = 'uint8_t'
>      suffix = '4ub'
>  
> diff --git a/src/gallium/include/pipe/p_format.h
> b/src/gallium/include/pipe/p_format.h
> index 3d1c997..a5c9eb4 100644
> --- a/src/gallium/include/pipe/p_format.h
> +++ b/src/gallium/include/pipe/p_format.h
> @@ -251,6 +251,65 @@ enum pipe_format {
>     PIPE_FORMAT_B10G10R10A2_SSCALED     = 175,
>     PIPE_FORMAT_B10G10R10A2_SNORM       = 176,
>  
> +   PIPE_FORMAT_R8_UINT                 = 177,
> +   PIPE_FORMAT_R8G8_UINT               = 178,
> +   PIPE_FORMAT_R8G8B8_UINT             = 179,
> +   PIPE_FORMAT_R8G8B8A8_UINT           = 180,
> +
> +   PIPE_FORMAT_R8_SINT                 = 181,
> +   PIPE_FORMAT_R8G8_SINT               = 182,
> +   PIPE_FORMAT_R8G8B8_SINT             = 183,
> +   PIPE_FORMAT_R8G8B8A8_SINT           = 184,
> +
> +   PIPE_FORMAT_R16_UINT                = 185,
> +   PIPE_FORMAT_R16G16_UINT             = 186,
> +   PIPE_FORMAT_R16G16B16_UINT          = 187,
> +   PIPE_FORMAT_R16G16B16A16_UINT       = 188,
> +
> +   PIPE_FORMAT_R16_SINT                = 189,
> +   PIPE_FORMAT_R16G16_SINT             = 190,
> +   PIPE_FORMAT_R16G16B16_SINT          = 191,
> +   PIPE_FORMAT_R16G16B16A16_SINT       = 192,
> +
> +   PIPE_FORMAT_R32_UINT                = 193,
> +   PIPE_FORMAT_R32G32_UINT             = 194,
> +   PIPE_FORMAT_R32G32B32_UINT          = 195,
> +   PIPE_FORMAT_R32G32B32A32_UINT       = 196,
> +
> +   PIPE_FORMAT_R32_SINT                = 197,
> +   PIPE_FORMAT_R32G32_SINT             = 198,
> +   PIPE_FORMAT_R32G32B32_SINT          = 199,
> +   PIPE_FORMAT_R32G32B32A32_SINT       = 200,
> +
> +   PIPE_FORMAT_A8_UINT                 = 201,
> +   PIPE_FORMAT_I8_UINT                 = 202,
> +   PIPE_FORMAT_L8_UINT                 = 203,
> +   PIPE_FORMAT_L8A8_UINT               = 204,
> +
> +   PIPE_FORMAT_A8_SINT                 = 205,
> +   PIPE_FORMAT_I8_SINT                 = 206,
> +   PIPE_FORMAT_L8_SINT                 = 207,
> +   PIPE_FORMAT_L8A8_SINT               = 208,
> +
> +   PIPE_FORMAT_A16_UINT                = 209,
> +   PIPE_FORMAT_I16_UINT                = 210,
> +   PIPE_FORMAT_L16_UINT                = 211,
> +   PIPE_FORMAT_L16A16_UINT             = 212,
> +
> +   PIPE_FORMAT_A16_SINT                = 213,
> +   PIPE_FORMAT_I16_SINT                = 214,
> +   PIPE_FORMAT_L16_SINT                = 215,
> +   PIPE_FORMAT_L16A16_SINT             = 216,
> +
> +   PIPE_FORMAT_A32_UINT                = 217,
> +   PIPE_FORMAT_I32_UINT                = 218,
> +   PIPE_FORMAT_L32_UINT                = 219,
> +   PIPE_FORMAT_L32A32_UINT             = 220,
> +
> +   PIPE_FORMAT_A32_SINT                = 221,
> +   PIPE_FORMAT_I32_SINT                = 222,
> +   PIPE_FORMAT_L32_SINT                = 223,
> +   PIPE_FORMAT_L32A32_SINT             = 224,

Are the pure versions of I/A/L really used anywhere? I thought these formats were being deprecated in GL 3.x

Empty line missing here.

>     PIPE_FORMAT_COUNT
>  };

Jose


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