We only use _mesa_make_temp_ubyte_image in texstore.c to convert
GL_COLOR_INDEX to RGBA, but this helper does more stuff than this.
All uses of this helper can be replaced with calls to
_mesa_format_convert except for this GL_COLOR_INDEX conversion.
This patch extracts the GL_COLOR_INDEX to RGBA logic to a separate
helper so we can use that instead from texstore.c.
In future patches we will replace all remaining calls to
_mesa_make_temp_ubyte_image in the repository (related to compressed
formats) with calls to _mesa_format_convert so we can remove
_mesa_make_temp_ubyte_image and related functions.
v2:
- Remove ‘for’ loop initial declaration. They are only allowed in C99 or C11
mode.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
For glReadPixels with a Luminance destination format we compute luminance
values from RGBA as L=R+G+B. This, however, requires ad-hoc implementation,
since pack/unpack functions or _mesa_swizzle_and_convert won't do this
(and thus, neither will _mesa_format_convert). This patch adds helpers
to do this computation so they can be used to support conversion to luminance
formats.
The current implementation of glReadPixels does this computation as part
of the span functions in pack.c (see _mesa_pack_rgba_span_float), that do
this together with other things like type conversion, etc. We do not want
to use these functions but use _mesa_format_convert instead (later patches
will remove the color span functions), so we need to extract this functionality
as helpers.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We have _mesa_swap{2,4} but these do in-place byte-swapping only. The new
functions receive an extra parameter so we can swap bytes on a source
input array and store the results in a (possibly different) destination
array.
This is useful to implement byte-swapping in pixel uploads, since in this
case we need to swap bytes on the src data which is owned by the
application so we can't do an in-place byte swap.
v2:
- Include compiler.h in image.h, which is necessary to build in MSCV as
indicated by Brian Paul.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We had previously added the needed mesa formats, so we can simplify
the code further.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
v2 after review by Jason Ekstrand:
- Move _mesa_format_from_format_and_type to glformats
- Return a mesa_format for GL_UNSIGNED_INT_8_8_8_8(_REV)
v3:
- Adapted to the new implementation of mesa_array_format as a plain uint32_t
bitfield.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This will come in handy when callers of _mesa_format_convert need
to compute the rebase swizzle parameter to use.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
The new parameter allows callers to provide a rebase swizzle that
the function needs to use to match the requirements of the base
internal format involved. This is necessary when the source or
destination internal formats (depending on whether we are doing
the conversion for a pixel download or a pixel upload respectively)
do not match the base formats of the source or destination
formats of the conversion. This can happen when the driver does not
support the internal formats and uses a different format to store
pixel data internally.
For example, a texture upload from RGB to Luminance in a driver
that does not support textures with a Luminance format may decide
to store the Luminance data as RGBA. In this case we want to store
the RGBA values as (R,R,R,1). Following the same example, when we
download from that texture to RGBA we want to read (R,0,0,1). The
rebase_swizzle parameter allows these transforms to happen.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This is necessary to handle conversions between array types where
the driver does not support the dst format requested by the client and
chooses a different format instead.
We will need this in _mesa_format_convert, so move it to format_utils.c,
prefix it with '_mesa_' and make it available to other files.
v2:
- Move _mesa_compute_component_mapping to glformats
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
v2 by Iago Toral <itoral@igalia.com>:
- When testing if we can directly pack we should use the src format to check
if we are packing from an RGBA format. The original code used the dst format
for the ubyte case by mistake.
- Fixed incorrect number of bits for dst, it was computed using the src format
instead of the dst format.
- If the dst format is an array format, check if it is signed. We were only
checking this for the case where it was not an array format, but we need
to know this in both scenarios.
- Fixed incorrect swizzle transform for the cases where we convert between
array formats.
- Compute is_signed and bits only once and for the dst format. We were
computing these for the src format too but they were overwritten by the
dst values immediately after.
- Be more careful when selecting the integer path. Specifically, check that
both src and dst are integer types. Checking only one of them should suffice
since OpenGL does not allow conversions between normalized and integer types,
but putting extra care here makes sense and also makes the actual requirements
for this path more clear.
- The format argument for pack functions is the destination format we are
packing to, not the source format (which has to be RGBA).
- Expose RGBA8888_* to other files. These will come in handy when in need to
test if a given array format is RGBA or in need to pass RGBA formats to
mesa_format_convert.
v3 by Samuel Iglesias <siglesias@igalia.com>:
- Add an RGBA8888_INT definition.
v4 by Iago Toral <itoral@igalia.com> after review by Jason Ekstrand:
- Added documentation for _mesa_format_convert.
- Added additional explanatory comments for integer conversions.
- Ensure that we use _messa_swizzle_and_convert for all signed source formats.
- Squashed: do not directly (un)pack to RGBA UINT if the source is not unsigned.
v5 by Iago Toral <itoral@igalia.com>:
- Adapted to the new implementation of mesa_array_format as a plain uint32_t
bitfield.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Use autogenerated format pack functions and take advantage of some
macros to reduce source code, facilitating its maintenance.
Unfortunately, dstType == GL_UNSIGNED_SHORT cannot simplified like
the others, so keep it as it is.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We will use this in a later patch to refactor _mesa_pack_rgba_span_float.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Take advantage of new mesa formats and new format_pack functions to
reduce source code in _mesa_pack_rgba_span_from_ints() and
_mesa_pack_rgba_span_from_uints().
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This commit adds a macro to facilitate the task of using
format conversions functions but keeps the same API.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This will be used to refactor code in pack.c and support conversion
to/from these types in a master convert function that will be added
later.
v2:
- Fix autogeneration of MESA_FORMAT_A2R10G10B10_UNORM pack/unpack
functions
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
This will be used to unify code in pack.c.
v2:
- Modify pack_int_*() function generator to use c.datatype() and
f.datatype()
v3:
- Only autogenerate pack_int_*() functions for non-normalized integer
formats.
v4:
- Use _mesa_unsigned_to_unsigned() in pack_int_*() because, in order
to be able to pack both signed and unsigned formats, we need to
sign-extend.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We will use this later on to handle uint conversion scenarios in a master
convert function.
v2:
- Modify pack_uint_*() function generation to use c.datatype() and
f.datatype().
- Remove UINT_TO_FLOAT() macro usage from pack_uint*()
- Remove "if not f.is_normalized()" conditional as pack_uint*()
functions are only autogenerated for non normalized formats.
v3:
- Add clamping for non-normalized integer formats in pack_uint*()
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
v2 by Samuel Iglesias <siglesias@igalia.com>:
- Add usage of INDENT_FLAGS in Makefile.am
v3 by Samuel Iglesias <siglesias@igalia.com>:
- Modify unpack_float_*() and unpack_ubyte_*() function generation
to use c.datatype() and f.datatype()
- Fix out-of-tree build
v4 by Samuel Iglesias <siglesias@igalia.com>:
- format_unpack.c.mako is now format_unpack.py, with the template code
inlined. It now auto-generates format_unpack.c
- Add format_unpack.c to gitignore.
- Simplify Makefile.am change
- Modify SConscript to build format_unpack.c with scons
v5 by Samuel Iglesias <siglesias@igalia.com>:
- Don't allow float to non-normalized integer format conversions.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We were auto-generating it before. The problem was that the autogeneration
tool we were using was called "copy, paste, and edit". Let's use a more
sensible solution.
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
v2 by Samuel Iglesias <siglesias@igalia.com>
- Remove format_pack.c as it is now autogenerated
- Add usage of INDENT_FLAGS in Makefile.am
- Remove trailing blank line
v3 by Samuel Iglesias <siglesias@igalia.com>
- Merge format_convert.py into format_parser.py
- Adapt pack_*_* function generations
- Fix out-of-tree build
v4 by Samuel Iglesias <siglesias@igalia.com>
- _get_datatype() is now a helper function
v5 by Samuel Iglesias <siglesias@igalia.com>
- format_pack.c.mako is now format_pack.py, with the template code
inlined. It now auto-generates format_pack.c
- Simplify Makefile.am change.
- Modify SConscript to build format_pack.c with scons.
- Remove run_mako.py
- Add format_pack.c to gitignore
v6 by Samuel Iglesias <siglesias@igalia.com>:
- Don't allow float to non-normalized integer format conversions.
- Add non-normalized formats support for ubyte packing functions. Merge
the previously separated patch.
- Add clamping for non-normalized integer formats in pack_ubyte*()
v7 by Samuel Iglesias <siglesias@igalia.com>:
- Add assert to check that sRGB formats are 8-bit size.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
It is now a hard dependency because of the autogeneration of
format pack and unpack functions.
Update the documentation to reflect this change.
v2:
- Inline python script in m4 file and use PYTHON2
v3:
- Remove semicolons and quotes and change coding style
- Add Ilia Mirkin suggestion to use Python's split functionality.
- Use AX_CHECK_PYTHON_MAKO_MODULE name.
- Change to MIT license
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
If we need the base format for a mesa_array_format we have to find the
matching mesa_format first. This is expensive because it requires
to loop through all existing mesa formats until we find the right match.
We can resolve the base format of an array format directly by looking
at its swizzle information. Also, we can have _mesa_get_format_base_format
accept an uint32_t which can pack either a mesa_format or a mesa_array_format
and resolve the base format for either type. This way clients do not need to
check if they have a mesa_format or a mesa_array_format and call different
functions depending on the case.
Another reason to resolve the base format for array formats directly is that
we don't have matching mesa_format enums for every possible array format, so
for some GL format/type combinations we can produce array formats that don't
have a corresponding mesa format, in which case we would not be able to
find the base format. Example format=GL_RGB, type=GL_UNSIGNED_SHORT. This type
would map to something like MESA_FORMAT_RGB_UNORM16, but we don't have that.
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
An array format is a 32-bit integer format identifier that can represent
any format that can be represented as an array of standard GL datatypes.
Whie the MESA_FORMAT enums provide several of these, they don't account for
all of them.
v2 by Iago Toral Quiroga <itoral@igalia.com>:
- Implement mesa_array_format as a plain bitfiled uint32_t type instead of
using a struct inside a union to access the various components packed in
it. This is necessary to support bigendian properly, as pointed out by
Ian.
- Squashed: Make float types normalized
v3 by Iago Toral Quiroga <itoral@igalia.com>:
- Include compiler.h in formats.h, which is necessary to build in MSVC as
indicated by Brian Paul.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Fix various conversion paths that involved integer data types of different
sizes (uint16_t to uint8_t, int16_t to uint8_t, etc) that were not
being clamped properly.
Also, one of the paths was incorrectly assigning the value 12, instead of 1,
to the constant "one".
v2:
- Create auxiliary clamping functions and use them in all paths that
required clamp because of different source and destination sizes
and signed-unsigned conversions.
v3:
- Create MIN_INT macro and use it.
v4:
- Add _mesa_float_to_[un]signed() and mesa_half_to_[un]signed() auxiliary
functions.
- Add clamp for float-to-integer conversions in _mesa_swizzle_and_convert()
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
_BaseFormat is a GLenum (unsigned int) so testing if its value is
greater than 0 to detect the cases where _mesa_base_tex_format
returns -1 doesn't work.
Fixing the assertion breaks the arb_texture_view-lifetime-format
piglit test on nouveau, since that test calls
_mesa_base_tex_format with GL_R16F with a context that does not
have ARB_texture_float, so it returns -1 for the BaseFormat, which
was not being caught properly by the ASSERT in init_teximage_fields_ms
until now.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
We were returning incorrect mesa formats for GL_LUMINANCE_ALPHA16I_EXT
and GL_LUMINANCE_ALPHA32I_EXT.
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
The PACK_565_REV macro is no longer used. It was also extremely confusing
because it's actually a byteswapped 565 not reversed 565.
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Aparently, the packing/unpacking functions for these formats have differed
from the format description in formats.h. Instead of fixing this, people
simply left a comment saying it was broken. Let's actually fix it for
real.
v2 by Samuel Iglesias <siglesias@igalia.com>:
- Fix comment in formats.h
Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This patch fixes the return of a wrong value when x is lower than
-MAX_INT(src_bits) as the result would not be between [-1.0 1.0].
v2 by Samuel Iglesias <siglesias@igalia.com>:
- Modify snorm_to_float() to avoid doing the division when
x == -MAX_INT(src_bits)
Cc: 10.4 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
No need to recheck the FS compile when the VS source has changed, but
there *is* a need to recheck the VS compile when the compiled VS has
changed (since the live inputs may change).
Fixes es3conform's blend test.
The util_pack_color() thing only sets up the low bits of the union, so
only return them, too. Fixes intermittent failure on
fbo-alphatest-formats and es3conform's framebuffer-objects test under
simulation.
Turns out this was harmful in code quality:
total instructions in shared programs: 39487 -> 38845 (-1.63%)
instructions in affected programs: 22522 -> 21880 (-2.85%)
This costs us yet another register, which is painful since it means more
programs might fail to compile). However, the alternative was causing us
trouble where we'd save/restore r3 while it contained a MIN-ed direct
texture offset, causing the kernel to fail to validate our shaders (such
as in GLB2.7).
This gets a bunch of dead reads out of the CSes, which don't read most
attributes generally.
total instructions in shared programs: 39753 -> 39487 (-0.67%)
instructions in affected programs: 4721 -> 4455 (-5.63%)
This will give the compiler the chance to dead-code eliminate unused VPM
reads. This is particularly a big deal in the CS where a bunch of vattrs
are just not going to be used.
