glsl_to_tgsi: Constify mesa_sysval_to_semantic

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

i965/clip: Fix brw_clip_unfilled.c/compute_offset's assembly.

Due to the destination register width of 1 or 2, these instructions get
ExecSize 1 or 2.  But dir and offset (used as src0) are both registers
of width 4, violating the execsize >= width assertion.

I honestly don't think this could have ever worked.

Fixes Piglit's polygon-offset and polygon-mode-offset tests on Gen4-5.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70441
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>

glsl: support unsigned increment in ir_loop controls

Current version can create ir_expression where operands have
different base type, patch adds support for unsigned type.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
https://bugs.freedesktop.org/show_bug.cgi?id=80880

mesa/formats: Fix the size of ETC2_SRGB8_PUNCHTHROUGH_ALPHA1

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

mesa/formats: Use the correct swizzle parameter for the 11-bit EAC formats

Red-only formats should be x001 and RG formats should be xy01.

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>

draw: fix clipvertex trouble if position comes from gs

If the vertex shader has no position but the gs has, the clipvertex output
was -1 (because it's the same as vs position in this case if there's no
explicit clipvertex output). This caused crashes (or assertion failures) in
clipping since in the end position (which came from gs) was different from
cv (-1) and we then tried to use the bogus cv input.
Rather than just test for -1 cv value in clipping, make it explicitly return
the position output of the gs instead which seems cleaner (since we really
don't want to use the clipvertex value from the vs (it could be a valid value
in the (unsupported) case of vs writing clipvertex but still using a gs).
This fixes piglit shader_runner clip-distance-out-values.shader_test.

Reviewed-by: Zack Rusin <zackr@vmware.com>

draw: don't run pipeline stages when gs has no position output

The clip stage may crash if there's no position output, for this reason
code was added to avoid running the pipeline stages in this case
(c7c7186045ec617c53f7899280cbe12e59503e4d). However, this failed to actually
work when there was a geometry shader, since unlike the vertex shader it did
not initialize the position output to -1, hence the code trying to detect
this didn't trigger. So simply initialize the position output to -1 just like
the vs does.
This fixes piglit glsl-1.50-transform-feedback-type-and-size (segfault->pass).
clip-distance-out-values.shader_test goes from segfault to assertion failure,
suggesting more fixes are needed, no other piglit changes.

Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>

dri/xmlconfig: s/uint/unsigned int/

This patch fixes this build error on Mac OS X.

./xmlconfig.h:61:5: error: unknown type name 'uint'; did you mean 'int'?
    uint nRanges;         /**< \brief Number of ranges */
    ^~~~
    int
./xmlconfig.h:79:5: error: unknown type name 'uint'; did you mean 'int'?
    uint tableSize;
    ^~~~
    int

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa include stdint.h in formats.h

To get uint8_t type, to fix MSVC build.
Trivial.

mesa/texstore: Add a generic rgba integer texture upload path

Again, we delete a lot of functions that aren't really doing anything
interesting anymore.

v2: Comment the texstore_rgba_integer function

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/texstore: Add a generic float/normalized rgba texture upload path

This commit also removes a bunch of functions which aren't doing anything
more interesting than the general path does.

v2: Better comment the texstore_via_float function

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/texstore: Use _mesa_swizzle_and_convert when possible

This should be both faster and more accurate than our general slow-path of
converting everything to float.

v2: Add a comment to top of the texstore_swizzle function

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

main/texstore: Split texture storage into three functions

This commit splits the texture storage into three functions:
texstore_depth_stencil, texstore_compressed, and texstore_rgba.  Right now
this split seems artificial since we just have one function pointer per
format and there is no difference between these three categories.  However,
this split makes it much easier to write a more general function upload
path for one of these categories than the current function pointers.

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/format_utils: Add a function to convert a mesa_format to an array format

This commits adds the _mesa_format_to_array function that determines if the
given format can be represented as an array format and computes the array
format parameters. This is a direct helper function for using
_mesa_swizzle_and_convert

v2: Better documentation and commit message
v3: Fixed a potential segfault from an invalid endianness swizzle

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/format_utils: Add a general format conversion function

Most format conversion operations required by GL can be performed by
converting one channel at a time, shuffling the channels around, and
optionally filling missing channels with zeros and ones.  This adds a
function to do just that in a general, yet efficient, way.

v2:
 * Add better comments including full docs for functions
 * Don't use __typeof__
 * Use inline helpers instead of writing out conversions by hand,
 * Force full loop unrolling for better performance

v3: Add another set of parens around the MAX_INT macro

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/imports: Add a _mesa_half_is_negative helper function

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/formats: Add layout and swizzle information

v2: Move the MESA_FORMAT_SWIZZLE enum to the top of the file

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/formats: Remove IndexBits

Mesa hasn't supported color-indexed textures for some time.  This is 0 for
all texture formats, so we don't need to store it.

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/formats: Autogenerate the format_info structure from a CSV file

Instead of a having all of the format metadata in a gigantic hard-to-edit
array of type struct format_info, we now have a human-readable CSV file.
The CSV file also contains more format information than the format_info
struct contained so we can potentially make format_info more detailed later.

The python to generate the format information was added the previous
commit.  This commit turns it on in both automake and scons builds.

v2: Split into two commits and stuff to generate format_info.c from scons

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/main: Add python code to generate the format_info structure

This adds a python script called format_info.py that is used to generate a
single format_info.c file that contains the filled-out format_info array.

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa: Add python to parse the formats CSV file

The basic concept for the format parser was taken from the format CSV
parser in gallium/auxilliary/util.  However, this one has been altered in a
number of ways:

 * Removed big endian vs. little endian stuff (mesa doesn't need it)
 * Better documentation: Almost every method has a full docstring
 * An actual Swizzle class with methods for composition and inverses
 * Over-all cleaner (in my opinion) implementation and class interactions
 * A few bug fixes

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa: Add a format description CSV file

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

util/tests/hash_table: Link against libmesautil instead of libmesa

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82159

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

st/mesa: adjust Z coordinates for quad clearing

Specify the quad's Z position in clip coordinate space, not
normalized Z space.  Use viewport scale, translation = 0.5, 0.5.

Before, we were specifying the quad's Z position in [0,1] and using
viewport scale=1.0, translate=0.0.  That works fine, unless your
driver needs to work in clip coordinate space and needs to
reconstruct viewport near/far values from the scale/translation
factors.  The VMware svga driver falls into that category.

When we did that reconstruction we wound up with near=-1 and far=1
which are outside the limits of [0,1].  In some cases, this caused
the quad to be drawn at the wrong depth.  In other cases it was
clipped away.

Fixes some scissored depth clears with VMware driver.  This should
have no effect on other drivers.  We're already using these values
for the glBitmap and glDraw/CopyPixels code.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>

mesa: make vertex array type error checking a little more efficient

Compute the bitmask of supported array types once instead of every
time we call a GL vertex array function.

Reviewed-by: Matthew McClure <mcclurem@vmware.com>

glsl_to_tgsi: Fix typo shader_program -> shader

This was a regression introduced by commit
f4b0ab7afd83c811329211eae8167c9bf238870c ('st/mesa: fix incorrect size
of UBO declarations') which caused an assertion failure while compiling
shaders of e.g. UE4 demos.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81834
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa: update wglext.h to version 20140630

Reviewed-by: Matt Turner <mattst88@gmail.com>

mesa: update glxext.h to version 20140725

Reviewed-by: Matt Turner <mattst88@gmail.com>

mesa: update glext.h to version 20140725

Reviewed-by: Matt Turner <mattst88@gmail.com>

meta: Disable dithering during glBlitFramebuffer

According to the GL spec the only fragment operations that should affect
glBlitFramebuffer are “the pixel ownership test, the scissor test, and sRGB
conversion”. That implies that dithering should not be performed so we need to
disable it when implementing the blit with a render.

Before commit 05b52efbc97731 the dithering state would be left as whatever the
application picks (the default being GL_TRUE) and after that commit it was
explicitly enabled. Neither of these were correct.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81828
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

libgl-xlib: drop duplicate mesautil from scons build

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

llvmpipe/tests: automake: link against libmesautil.la

Or the build will fail due to unresolved symbols.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

gallium/tests: automake: link against libmesautil.la

Or the build will fail due to unresolved symbols.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/omx: automake: link against libmesautil.la

Or the build will fail due to unresolved symbols.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/xvmc: automake: link against libmesautil.la

Or the build will fail due to unresolved symbols.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/clover: link against libmesautil.la

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-and-Tested-by: Michel Dänzer <michel.daenzer@amd.com>

gallivm: Fix build with latest LLVM

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-and-Tested-by: Michel Dänzer <michel.daenzer@amd.com>

targets/dri: link with mesautil

Similar to other recent build fixes.

Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

gallium/docs: Document TEX2/TXL2/TXB2 instructions and fix up other tex doc

Add documentation for TEX2/TXL2/TXB2 tgsi opcodes. Also, the texture opcode
documentation wasn't very accurate so fix this up a bit.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

gallivm: fix cube map array (and cube map shadow with bias) handling

In particular need to handle TEX2/TXB2/TXL2 opcodes.
cube map shadow with bias already used TXB2 which didn't work before
at all, despite that there's by default no piglit change (but using
no_quad_lod and no_rho_opt indeed passes some more tex-miplevel-selection
tests).
The actual sampling code still won't handle cube map arrays.

Reviewed-by: Brian Paul <brianp@vmware.com>

llvmpipe: implement support for cube map arrays

This just covers the resource side of things, not the actual sampling.
Here things are trivial as cube map arrays are identical to 2d arrays in
all respects.

Reviewed-by: Brian Paul <brianp@vmware.com>

egl: Fix OpenGL ES version checks in _eglParseContextAttribList()

We would generate EGL_BAD_CONFIG because _eglGetContextAPIBit
returns zero for the combination of EGL_OPENGL_ES_API and a major
version > 3.  By just returning zero, the caller can't tell the
difference between a bad version (which should generate
EGL_BAD_MATCH) and a bad API (which should generate
EGL_BAD_CONFIG).  This patch causes us to filter out major
versions > 3 at a point where we can generate the correct error.

Fixes gles3 Khronos CTS test:
egl_create_context.egl_create_context

V2: Fix commit message as suggested by Ian.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

meta: Fix datatype computation in get_temp_image_type()

Changes in the patch will cause datatype to be computed
correctly for 8 and 16 bit integer formats. For example:
GL_RG8I, GL_RG16I etc.

Fixes many failures in gles3 Khronos CTS test:
copy_tex_image_conversions_required
copy_tex_image_conversions_forbidden

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

meta: Move the call to _mesa_get_format_datatype() out of switch

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

meta: Use _mesa_get_format_bits() to get the GL_RED_BITS

We currently get red bits from ctx->DrawBuffer->Visual.redBits
by making a false assumption that the texture we're writing to
(in glCopyTexImage2D()) is used as a DrawBuffer.

Fixes many failures in gles3 Khronos CTS test:
copy_tex_image_conversions_required

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

meta: Initialize the variable in declaration statement

Saves one line of code :)

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

mesa: Allow GL_TEXTURE_CUBE_MAP target with compressed internal formats

GL_TEXTURE_CUBE_MAP is an allowed texture target in glTexStorage2D()
and is allowed to be used (like GL_TEXTURE_2D) with compressed internal
formats.

Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: Add gles3 condition for normalized internal formats in glCopyTexImage*()

Fixes many failures in gles3 Khronos CTS test: packed_pixels

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add utility function _mesa_is_enum_format_unorm()

V2: Add missing formats.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add gles3 error condition for GL_RGBA10_A2 buffer format in glCopyTexImage*()

Fixes many failures in gles3 Khronos CTS test: packed_pixels

Khronos bug# 9807
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add a gles3 error condition for sized internalformat in glCopyTexImage*()

Fixes many failures in gles3 Khronos CTS test: packed_pixels

V2: Add the check for alpha bits to avoid confusion.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add a helper function _mesa_is_enum_format_unsized()

Function is utilized by next patch in the series.

V2: Add missing formats.

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Don't allow snorm internal formats in glCopyTexImage*() in GLES3

Fixes few failures in gles3 Khronos CTS test: packed_pixels

Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add utility function _mesa_is_enum_format_snorm()

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Fix condition for using compressed internalformat in glCompressedTexImage3D()

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Add error condition for using compressed internalformat in glTexStorage3D()

Fixes gles3 Khronos CTS test: texture_storage_texture_internal_formats

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Turn target_can_be_compressed() in to a utility function

V2:  Declare the function in teximage.h

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa: Fix error condition for valid texture targets in glTexStorage* functions

Fixes gles3 Khronos CTS test: texture_storage_texture_targets

Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

glsl: Rebuild the symbol table without unreachable symbols

Previously we had to keep unreachable global symbols in the symbol table
because the symbol table is used during linking.  Having the symbol
table retain pointers to freed memory... what could possibly go wrong?
At the same time, this meant that we kept live references to tons of
memory that was no longer needed.

New strategy:  destroy the old symbol table, and make a new one from the
reachable symbols.

Valgrind massif results for a trimmed apitrace of dota2:

                  n        time(i)         total(B)   useful-heap(B) extra-heap(B)    stacks(B)
Before (32-bit): 59 40,642,425,451       76,337,968       69,720,886     6,617,082            0
After  (32-bit): 46 40,661,487,174       75,116,800       68,854,065     6,262,735            0

Before (64-bit): 79 37,179,441,771      106,986,512       98,112,095     8,874,417            0
After  (64-bit): 64 37,200,329,700      104,872,672       96,514,546     8,358,126            0

A real savings of 846KiB on 32-bit and 1.5MiB on 64-bit.

v2: (by Kenneth Graunke) Just add the ir_function from the IR stream,
    rather than looking it up in the symbol table; they're now
    identical.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

glsl: Only create one ir_function for a given name.

Piglit's spec/glsl-1.10/linker/override-builtin-{const,uniform}-05 tests
do the following:

1. Call abs(float) - a built-in function.
2. Create a user-defined replacement for abs(float).
3. Call abs(float) again - now the user function.

At step 1, we created an ir_function which included the built-in
signature, added it to the symbol table, and emitted it into the IR
stream.

Then, when processing the function definition at step 2, we'd see that
there was already an ir_function.  But, since there were no user-defined
functions, we skipped over a bunch of code, and ended up creating a
second one.  This new ir_function shadowed the original in the symbol
table, but both ended up in the IR stream.

This results in an awkward situation where searching for an ir_function
via the symbol table, a forward linked list walk, and a reverse linked
list walk may return different ir_functions.  This seems undesirable.

This patch instead re-uses the existing ir_function, putting both
built-in and user-defined signatures in the same one.  The previous
patch's additional filtering ensures everything continues working.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Make it possible to ignore built-ins when matching signatures.

Historically, we've implemented the rules for overriding built-in
functions by creating multiple ir_functions and relying on the symbol
table to hide the one containing built-in functions.  That works, but
has a few drawbacks, so the next patch will change it.

Instead, we'll have a single ir_function for a particular name, which
will contain both built-in and user-defined signatures.  Passing an
extra parameter to matching_signature makes it easy to ignore built-ins
when they're supposed to be hidden.

I didn't add the parameter to exact_matching_signature since it wasn't
necessary.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: Actually use the Mesa IR optimizer for ARB programs.

On Haswell, this cuts 1-3 instructions from 183 vertex shaders in
"Shadowrun Returns", "Shatter", and "Trine 2."  It adds 2 instructions
to a single fragment shader in "Closure."

total instructions in shared programs: 278803 -> 278546 (-0.09%)
instructions in affected programs:     41930 -> 41673 (-0.61%)

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

glsl: Do not add extra padding to structures

This code was attemping to align the base of the structure to the required
alignment of the structure.  However, it had two problems:

1. It was aligning the target structure member, not the base of the
structure.

2. It was calculating the alignment based on the members previous to the
target member instead of all the members of the structure.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.nested_structs.6
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.2
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.6
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.5
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.19
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.0
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.2
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.6
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.12

v2: Fix rebase failure noticed by Matt.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Correctly determine when the field of a UBO is row-major

Previously if a field of an block with an instance name was marked
row-major (but block itself was not), we would think the field (and it's
sub-fields) were column-major.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.basic_types.7
ES3-CTS.shaders.uniform_block.random.basic_types.9
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.1
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.3
ES3-CTS.shaders.uniform_block.random.nested_structs.3
ES3-CTS.shaders.uniform_block.random.nested_structs.5
ES3-CTS.shaders.uniform_block.random.nested_structs.8
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.3
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.6
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.7
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.8
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.9
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.0
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.1
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.2
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.3
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.4
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.6
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.0
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.1
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.5
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.0
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.4
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.7
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.8
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.12
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.14
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.15
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.16
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.1
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.8
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.9
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.10
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.11
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.13
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.14
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.15
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.16
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.17

Fixes gles3conform failures (caused by previous commits) in:

ES3-CTS.shaders.uniform_block.random.basic_types.8
ES3-CTS.shaders.uniform_block.random.basic_arrays.3
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.0
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.2
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.9
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.13
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.18
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.4

v2: Fix rebase failure noticed by Matt.

v3: Use without_array() instead of older predicates.

v4: s/GLSL_MATRIX_LAYOUT_DEFAULT/GLSL_MATRIX_LAYOUT_INHERITED/g

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com> [v2]

linker: Use the matrix layout information in ir_variable and glsl_type for UBO layout

Use the data that is stored in the ir_variable and the glsl_type to
determine whether or not a UBO member is row-major.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat2x3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat2x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat3x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat3x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat4x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.shared.row_major_mat4x3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat2x3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat2x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat3x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat3x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat4x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.packed.row_major_mat4x3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat2x3
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat2x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat3x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat3x4
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat4x2
ES3-CTS.shaders.uniform_block.instance_array_basic_type.std140.row_major_mat4x3
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.2
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.5
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.9

Causes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.basic_types.8
ES3-CTS.shaders.uniform_block.random.basic_arrays.3
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.0
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.2
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.13
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.18
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.4

These failures will be fixed shortly.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Track matrix layout of variables using two bits

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.3
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.13

Causes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.9

This failure will be fixed shortly.

v2: Use without_array() instead of older predicates.

v3: s/GLSL_MATRIX_LAYOUT_DEFAULT/GLSL_MATRIX_LAYOUT_INHERITED/g

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com> [v1]

glsl: Also track matrix layout information into structures

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Track matrix layout of structure fields using two bits

v2: Rename GLSL_MATRIX_LAYOUT_DEFAULT to GLSL_MATRIX_LAYOUT_INHERITED.
Add comments in glsl_types.h explaining the layouts.  Suggested by Matt.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Correctly load columns of a row-major matrix

For a row-major matrix, the next column starts at the next element.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.shared.row_major_mat4x3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.packed.row_major_mat4x3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x3
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat2x4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat3x4
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x2
ES3-CTS.shaders.uniform_block.single_basic_array.std140.row_major_mat4x3
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.9

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

linker: Add padding after the last field of a structure

This causes the thing following the structure to be vec4-aligned.

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.random.nested_structs.2
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.5

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

linker: Add a last_field parameter to various program_resource_visitor methods

I also considered renaming visit_field(const glsl_struct_field *) to
entry_record and adding an exit_record method.  This would be more
similar to the hierarchical visitor.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

mesa: Do not list inactive block members as active

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.single_nested_struct.per_block_buffer_packed
ES3-CTS.shaders.uniform_block.single_nested_struct_array.per_block_buffer_packed
ES3-CTS.shaders.uniform_block.random.scalar_types.7
ES3-CTS.shaders.uniform_block.random.basic_arrays.4
ES3-CTS.shaders.uniform_block.random.basic_arrays.6
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.2
ES3-CTS.shaders.uniform_block.random.nested_structs.9
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.3

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Do not eliminate 'shared' or 'std140' blocks or block members

Commit 32f32292 (glsl: Allow elimination of uniform block members)
enabled elimination of unused uniform block members to fix a gles3
conformance test failure.  This went too far the other way.

Section 2.11.6 (Uniform Variables) of the OpenGL ES 3.0.3 spec says:

    "All members of a named uniform block declared with a shared or
    std140 layout qualifier are considered active, even if they are not
    referenced in any shader in the program. The uniform block itself is
    also considered active, even if no member of the block is
    referenced."

Fixes gles3conform failures in:

ES3-CTS.shaders.uniform_block.single_nested_struct.per_block_buffer_shared
ES3-CTS.shaders.uniform_block.single_nested_struct.per_block_buffer_std140
ES3-CTS.shaders.uniform_block.single_nested_struct_array.per_block_buffer_shared
ES3-CTS.shaders.uniform_block.single_nested_struct_array.per_block_buffer_std140
ES3-CTS.shaders.uniform_block.random.scalar_types.2
ES3-CTS.shaders.uniform_block.random.scalar_types.9
ES3-CTS.shaders.uniform_block.random.vector_types.1
ES3-CTS.shaders.uniform_block.random.vector_types.3
ES3-CTS.shaders.uniform_block.random.vector_types.7
ES3-CTS.shaders.uniform_block.random.vector_types.9
ES3-CTS.shaders.uniform_block.random.basic_types.5
ES3-CTS.shaders.uniform_block.random.basic_types.6
ES3-CTS.shaders.uniform_block.random.basic_arrays.0
ES3-CTS.shaders.uniform_block.random.basic_arrays.2
ES3-CTS.shaders.uniform_block.random.basic_arrays.5
ES3-CTS.shaders.uniform_block.random.basic_arrays.8
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.0
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.4
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.5
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.6
ES3-CTS.shaders.uniform_block.random.basic_instance_arrays.9
ES3-CTS.shaders.uniform_block.random.nested_structs.0
ES3-CTS.shaders.uniform_block.random.nested_structs.1
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.4
ES3-CTS.shaders.uniform_block.random.nested_structs_instance_arrays.8
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays_instance_arrays.7
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.3
ES3-CTS.shaders.uniform_block.random.all_per_block_buffers.6
ES3-CTS.shaders.uniform_block.random.all_shared_buffer.18

v2: Whitespace and other minor fixes suggested by Matt.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Use the without_array predicate to simplify some code

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com> [v1]
Reviewed-by: Timothy Arceri <t_arceri@yahoo.com.au>

glsl: Add without_array type predicate

Returns the type without any arrays.

This will be used in later patches in this series.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Suggested-by: Timothy Arceri <t_arceri@yahoo.com.au>
Reviewed-by: Timothy Arceri <t_arceri@yahoo.com.au>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

glsl: Use constant_expression_value instead of as_constant

Just a few lines earlier we may have wrapped the index expression with
ir_unop_i2u expression.  Whenever that happens, as_constant will return
NULL, and that almost always happens.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

targets/graw-gdi: link with mesautil, not mesautils

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

wmesa: link with mesautil

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

osmesa: link with mesautil

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/libgl-gdi: link with mesautil

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/egl-static: link with libmesautil.la

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

mesa/x86: put code in braces to silence declarations after code warning

Reviewed-by: Matt Turner <mattst88@gmail.com>

src/Makefile.am: Move gtest before util

Since the ralloc test in util/tests needs gtest, we need to make sure that
the gtest subdir is loaded first.  This fixes bug #82148.

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

util: include c99_compat.h in format_srgb.h to get 'inline' definition

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

util: include c99_compat.h in hash_table.h to get 'inline' definition

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

targets/vdpau: link with libmesautil.la to fix build breakage

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

xlib: fix missing mesautil build breakage

Fixes the non-DRI build.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

svga: SVGA_3D_CMD_BIND_GB_SHADER needs to reserve two relocations.

With this patch, the SVGA_3D_CMD_BIND_GB_SHADER functionality will reserve
two relocations, one for the shader ID and the second for the MOB ID.

Verified with the WDDM winsys path that the number of relocations and patch
locations required is two.

Fixes Bug 1277406

Reviewed-by: Charmaine Lee <charmainel@vmware.com>

gallium: Add libmesautil dependency to gdm and xa targets

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

mesa/main: Use the RGB <-> sRGB conversion functions in libmesautil

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

gallium: Move sRGB <-> RGB handling to libmesautil

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

util: Gather some common macros

This gathers macros that have been included across components into util so
that the include chain can be more vertical.  In particular, this makes
util stand on its own without any dependence whatsoever on the rest of
mesa.

Signed-off-by: "Jason Ekstrand" <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

util: Move the open-addressing linear-probing hash_table to src/util.

This hash table is used in core Mesa, the GLSL compiler, and the i965
driver, which makes it a good candidate for the new src/util module.

It's much faster than program/hash_table.[ch] (see commit 6991c2922f5
for data), and José's u_hash_table.c has a comment saying Gallium should
probably consider switching to a linear probing hash table at some point.
So this seems like the best candidate for a shared data structure.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
v2 (Jason Ekstrand): Pick up another hash_table use and patch up scons

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

util: Move ralloc to a new src/util directory.

For a long time, we've wanted a place to put utility code which isn't
directly tied to Mesa or Gallium internals.  This patch creates a new
src/util directory for exactly that purpose, and builds the contents as
libmesautil.la.

ralloc seemed like a good first candidate.  These days, it's directly
used by mesa/main, i965, i915, and r300g, so keeping it in src/glsl
didn't make much sense.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
v2 (Jason Ekstrand): More realloc uses and some scons fixes

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa/SConscript: Use Makefile.sources instead of duplicating the file lists

Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

targets/dri: resolve the scons build

With earlier commit we've conditionally enabled/added the kms_dri target
for automake builds. Unfortunately the we forgot to add the appropriate
define in the scons build, resulting in a broken library due to the
undefined symbol 'kms_swrast_create_screen'.

Reported-by: Roland Scheidegger <sroland@vmware.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Tested-by: Roland Scheidegger <sroland@vmware.com>

mesa/st: Fix compiler warnings

both array and index are unsigned types

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Brian Paul <brianp@vmware.com>

gallium: Fix compiler warning.

warning: type qualifiers ignored on function return type

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Brian Paul <brianp@vmware.com>

glsl: fix switch statement default case regressions

This patch fixes regressions caused by commit 48deb4d. Regressions
happened because 'run_default' var did not get initialized when default
case was the last one.

Now all the switch tests in es3conform suite are passing.

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81857

st/dri: Fix driver loading if swrast isn't built

If building hardware drivers only, then kms_swrast_create_screen
won't be defined in inline_drm_helper.h and hardware drivers will
fail to dlopen as a result.

Copy the #if guards from inline_drm_helper.h to dri_kms_init_screen
to make the definition/use of the function match.

Fixes radeonsi_dri.so dlopen with the following configure:

./configure --with-dri-drivers= --with-dri-driverdir=/usr/local/lib/dri/ \
--enable-gbm --enable-gallium-gbm --enable-debug --enable-opencl \
--enable-opencl-icd --with-gallium-drivers=radeonsi \
--with-egl-platforms=drm --enable-glx-tls --enable-texture-float \
--enable-omx

Signed-off-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>