From d17ff2f7f1864c81c1e00d04baf20f953c6d276a Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 15 Aug 2019 15:38:00 -0700 Subject: [PATCH] gallium: Fix big-endian addressing of non-bitmask array formats. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The formats affected are: - LA x (16_FLOAT, 32_FLOAT, 32_UINT, 32_SINT) - R8G8B8 x (UNORM, SNORM, SRGB, USCALED, SSCALED, UINT, SINT) - RG/RGB/RGBA x (64_FLOAT, 32_FLOAT, 16_FLOAT, 32_UNORM, 32_SNORM, 32_USCALED, 32_SSCALED, 32_FIXED, 32_UINT, 32_SINT) - RGB/RGBA x (16_UNORM, 16_SNORM, 16_USCALED, 16_SSCALED, 16_UINT, 16_SINT) - RGBx16 x (UNORM, SNORM, FLOAT, UINT, SINT) - RGBx32 x (FLOAT, UINT, SINT) - RA x (16_FLOAT, 32_FLOAT, 32_UINT, 32_SINT) The updated st_formats.c unit test checks that the formats affected by this change are all array formats in the equivalent Mesa format (if any). Mesa's array format definition is clear: the value stored is an array (increasing memory address) of values of the channel's type. It's also the only thing that makes sense for the RGB types, or very large types like RGBA64_FLOAT (A should not move to the low address because the cpu is BE). Acked-by: Roland Scheidegger Acked-by: Adam Jackson Tested-by: Matt Turner (unit tests on BE) Reviewed-by: Marek Olšák --- src/gallium/auxiliary/util/u_format_parse.py | 23 +++++++++++++++----- src/mesa/state_tracker/tests/st_format.c | 23 ++++++++++++++++++++ 2 files changed, 40 insertions(+), 6 deletions(-) diff --git a/src/gallium/auxiliary/util/u_format_parse.py b/src/gallium/auxiliary/util/u_format_parse.py index b9627055cda..541ae69d4dc 100644 --- a/src/gallium/auxiliary/util/u_format_parse.py +++ b/src/gallium/auxiliary/util/u_format_parse.py @@ -379,16 +379,27 @@ def parse(filename): channel.shift = le_shift le_shift += channel.size - be_shift = 0 - for channel in be_channels[3::-1]: - channel.shift = be_shift - be_shift += channel.size - - assert le_shift == be_shift for i in range(4): assert (le_swizzles[i] != SWIZZLE_NONE) == (be_swizzles[i] != SWIZZLE_NONE) format = Format(name, layout, block_width, block_height, block_depth, le_channels, le_swizzles, be_channels, be_swizzles, colorspace) + + if format.is_array() and not format.is_bitmask(): + # Formats accessed as arrays by the pack functions (R32G32_FLOAT or + # R8G8B8_UNORM, for example) should not be channel-ordering-reversed + # for BE. + # Note that __eq__ on channels ignores .shift! + assert(format.be_channels == format.le_channels) + assert(format.be_swizzles == format.le_swizzles) + format.be_channels = format.le_channels + else: + be_shift = 0 + for channel in format.be_channels[3::-1]: + channel.shift = be_shift + be_shift += channel.size + + assert le_shift == be_shift + formats.append(format) return formats diff --git a/src/mesa/state_tracker/tests/st_format.c b/src/mesa/state_tracker/tests/st_format.c index 12cb74bd0be..e42a1873d5e 100644 --- a/src/mesa/state_tracker/tests/st_format.c +++ b/src/mesa/state_tracker/tests/st_format.c @@ -87,6 +87,29 @@ int main(int argc, char **argv) continue; if (mf != MESA_FORMAT_NONE) { + const struct util_format_description *desc = util_format_description(i); + + /* Make sure that gallium and Mesa agree on whether the format is an + * array format. + */ + if (desc->nr_channels > 1) { + bool mesa_array = (_mesa_get_format_layout(mf) == + MESA_FORMAT_LAYOUT_ARRAY); + bool gallium_array = desc->is_array && !desc->is_bitmask; + /* We should probably be checking equality here, but we have some + * UINT and SINT types that are array formats in Mesa but not in + * gallium. + */ + if (gallium_array && !mesa_array) { + fprintf(stderr, "%s is %sarray, %s is %sarray\n", + util_format_short_name(i), + gallium_array ? "" : "not ", + _mesa_get_format_name(mf), + mesa_array ? "" : "not "); + return 1; + } + } + enum pipe_format pf = st_mesa_format_to_pipe_format(st, mf); if (pf != i) { -- 2.30.2