Keith Whitwell [Tue, 24 Aug 2010 19:04:08 +0000 (20:04 +0100)]
llvmpipe: track drawing region as a single u_rect
Keith Whitwell [Tue, 24 Aug 2010 18:58:54 +0000 (19:58 +0100)]
llvmpipe: better triangle debugging
Keith Whitwell [Fri, 20 Aug 2010 15:18:23 +0000 (16:18 +0100)]
llvmpipe: cull zero-area triangles early
Keith Whitwell [Fri, 20 Aug 2010 14:45:25 +0000 (15:45 +0100)]
llvmpipe: more rasterization counters
Keith Whitwell [Fri, 20 Aug 2010 14:25:27 +0000 (15:25 +0100)]
llvmpipe: move some fence functions into lp_screen.c
Keith Whitwell [Fri, 20 Aug 2010 14:15:36 +0000 (15:15 +0100)]
llvmpipe: wake all threads waiting on a fence
Keith Whitwell [Fri, 20 Aug 2010 14:14:19 +0000 (15:14 +0100)]
llvmpipe: fence debugging, add llvmpipe_finish
Keith Whitwell [Fri, 20 Aug 2010 13:51:57 +0000 (14:51 +0100)]
tgsi: helper for dumping tokens as hex
Keith Whitwell [Fri, 20 Aug 2010 14:52:58 +0000 (15:52 +0100)]
draw: specialized cliptesting routines
Keith Whitwell [Fri, 20 Aug 2010 10:40:26 +0000 (11:40 +0100)]
util: add rectangle helpers to u_rect.h
This begins a process of repurposing this file. The existing usage is
as a header file for some software blit fallbacks, which should be
moved to a more appropriately named header.
Keith Whitwell [Fri, 20 Aug 2010 10:38:33 +0000 (11:38 +0100)]
gallium/docs: notes on scissor state
Keith Whitwell [Fri, 20 Aug 2010 10:36:53 +0000 (11:36 +0100)]
llvmpipe: remove dead code
Chia-I Wu [Sat, 7 Aug 2010 13:08:23 +0000 (21:08 +0800)]
draw: Remove UNDEFINED_VERTEX_ID checks in emit pathes.
UNDEFINED_VERTEX_ID is used by draw_pipe_vbuf to decide whether a vertex
has been emitted or not. The non-pipeline pathes do not use it (they
tell the frontend the max vertex count when prepare() is called).
Chia-I Wu [Wed, 25 Aug 2010 07:11:03 +0000 (15:11 +0800)]
gallium: Use draw_set_index_buffer and others.
Update all drivers to use draw_set_index_buffer,
draw_set_mapped_index_buffer, and draw_vbo. Remove
draw_set_mapped_element_buffer and draw_set_mapped_element_buffer_range.
Chia-I Wu [Sun, 1 Aug 2010 06:27:56 +0000 (14:27 +0800)]
svga: Remove redundant svga_draw_range_elements.
That is, implement draw_vbo directly. As a result,
svga_swtnl_draw_range_elements is also replaced by svga_swtnl_draw_vbo.
This commit should not have any functional change.
Chia-I Wu [Wed, 25 Aug 2010 06:02:12 +0000 (14:02 +0800)]
draw: Add draw_set_index_buffer and others.
This commit adds draw_set_index_buffer, draw_set_mapped_index_buffer,
and draw_vbo. The idea behind the new functions is that an index buffer
should be a state.
draw_arrays and draw_set_mapped_element_buffer are preserved, but the
latter will be removed soon.
Vinson Lee [Wed, 25 Aug 2010 07:52:34 +0000 (00:52 -0700)]
nvfx: Clean up header file inclusion in nvfx_screen.h.
Remove nvfx_context.h.
Include p_compiler.h for INLINE symbol.
Fixes nvfx_context.h -> nvfx_screen.h -> nvfx_context.h include recursion.
Vinson Lee [Wed, 25 Aug 2010 07:44:28 +0000 (00:44 -0700)]
nvfx: Include missing headers in nvfx_shader.h.
Include stdint.h for uint8_t symbol.
Include p_compiler.h for INLINE symbol.
Vinson Lee [Wed, 25 Aug 2010 07:40:00 +0000 (00:40 -0700)]
i965: Remove unnecessary header.
Vinson Lee [Wed, 25 Aug 2010 07:29:19 +0000 (00:29 -0700)]
r600: Include missing header in evergreen_fragprog.c.
Include r600_emit.h for r600EmitShader and r600EmitShaderConsts symbols.
Fixes the following GCC warnings.
evergreen_fragprog.c: In function 'evergreenSetupFragmentProgram':
evergreen_fragprog.c:521: warning: implicit declaration of function 'r600EmitShader'
evergreen_fragprog.c:778: warning: implicit declaration of function 'r600EmitShaderConsts'
Vinson Lee [Wed, 25 Aug 2010 07:19:45 +0000 (00:19 -0700)]
r600: Include missing header in evergreen_vertprog.c.
Include r600_emit.h for r600EmitShader and r600EmitShaderConsts symbols.
Fixes the following GCC warnings.
evergreen_vertprog.c:614: warning: implicit declaration of function 'r600EmitShader'
evergreen_vertprog.c:701: warning: implicit declaration of function 'r600EmitShaderConsts'
Vinson Lee [Wed, 25 Aug 2010 06:53:26 +0000 (23:53 -0700)]
gallivm: Include missing header in lp_bld_sample.h.
Include p_format.h for enum pipe_format symbol.
Vinson Lee [Wed, 25 Aug 2010 06:50:45 +0000 (23:50 -0700)]
gallivm: Include missing header in lp_bld_pack.h.
Include p_compiler.h for boolean symbol.
Vinson Lee [Wed, 25 Aug 2010 06:04:20 +0000 (23:04 -0700)]
r300/compiler: Silence uninitialized variable warning.
The variable loops would be used uninitialized if it ever processed a
RC_OPCODE_ENDLOOP case first.
This patch initalizes the loops variable to NULL and adds an assert at
the RC_OPCODE_ENDLOOP case that loops isn't NULL.
Silence the following GCC warning.
r3xx_vertprog.c: In function 'translate_vertex_program':
r3xx_vertprog.c:469: warning: 'loops' may be used uninitialized in this function
Vinson Lee [Wed, 25 Aug 2010 05:28:21 +0000 (22:28 -0700)]
r300g: Add missing comma in SConscript.
This is a follow-on patch to commit
574ba4b5f50bfe661427327cd792a8a200559376.
Fixes r300g SCons build.
Marek Olšák [Wed, 25 Aug 2010 02:55:01 +0000 (04:55 +0200)]
r300g: fix gl_PointCoord
Is this hackish or is this the correct way to use point_quad_rasterization?
Copied from nvfx.
Vinson Lee [Wed, 25 Aug 2010 02:08:47 +0000 (19:08 -0700)]
r600: Include missing header in evergreen_render.c.
Fixes the following GCC warning.
evergreen_render.c: In function 'evergreenTryDrawPrims':
evergreen_render.c:836: error: implicit declaration of function 'evergreenSetupFragmentProgram'
Vinson Lee [Wed, 25 Aug 2010 02:04:19 +0000 (19:04 -0700)]
r600: Remove unused variable.
Silences the following GCC warning.
evergreen_state.c: In function 'evergreenSetBlendState':
evergreen_state.c:341: warning: unused variable 'id'
Vinson Lee [Wed, 25 Aug 2010 01:51:56 +0000 (18:51 -0700)]
i965: Fix printf format warnings on 32-bit builds.
Vinson Lee [Wed, 25 Aug 2010 01:32:51 +0000 (18:32 -0700)]
r600: Remove unused variable.
Fixes the following GCC warning.
r600_emit.c In function 'r600AllocShaderConsts':
r600_emit.c:59: warning: unused variable 'out'
Vinson Lee [Wed, 25 Aug 2010 01:20:26 +0000 (18:20 -0700)]
r600: Remove spaces between backslash and newline.
Fixes the following GCC warnings.
r600_cmdbuf.h:201: warning: backslash and newline separated by space
r600_cmdbuf.h:202: warning: backslash and newline separated by space
Marek Olšák [Tue, 24 Aug 2010 00:51:20 +0000 (02:51 +0200)]
r300g: eliminate unused constants in FS
Marek Olšák [Mon, 23 Aug 2010 03:56:48 +0000 (05:56 +0200)]
r300g: eliminate unused constants in VS
Marek Olšák [Tue, 24 Aug 2010 21:05:09 +0000 (23:05 +0200)]
r300g: clean up some mess in set_constant_buffer
Marek Olšák [Mon, 23 Aug 2010 03:58:08 +0000 (05:58 +0200)]
r300g: fix indentation
Marek Olšák [Mon, 23 Aug 2010 03:48:39 +0000 (05:48 +0200)]
r300/compiler: implement elimination of unused constants
Wine likes to create a *lot* of constants, exceeding the size of the constant
file in hw.
Marek Olšák [Sun, 22 Aug 2010 23:24:01 +0000 (01:24 +0200)]
r300/compiler: terminate vertex shader compilation immediately after an error
Also rename "compiler" to "c".
Marek Olšák [Sun, 22 Aug 2010 18:45:50 +0000 (20:45 +0200)]
r300/compiler: fail to compile if we hit hw limits or an unimplemented feature
i.e. relative addressing (mainly FS), saturate modifiers, exceeding
the maximum number of constants.
Marek Olšák [Sun, 22 Aug 2010 01:29:54 +0000 (03:29 +0200)]
r300/compiler: handle indexable temporaries correctly in deadcode elimination
Marek Olšák [Sun, 22 Aug 2010 01:20:19 +0000 (03:20 +0200)]
r300/compiler: disable register allocation for indexable temporaries in VS
If there is relative addressing of temporaries, we cannot change register
indices, so skip register allocation entirely. To utilize register allocation
at least partially, we need separate indexable and non-indexable register
files in both TGSI and Mesa IR.
Marek Olšák [Tue, 24 Aug 2010 15:16:44 +0000 (17:16 +0200)]
r300g: reset the index bias to 0 at the end of CS
Marek Olšák [Sun, 22 Aug 2010 01:15:00 +0000 (03:15 +0200)]
ir_to_mesa: set IndirectRegisterFiles
This fixes relative addressing of temporaries (and maybe others)
in all gallium drivers.
Acked on irc by Eric Anholt.
Vinson Lee [Wed, 25 Aug 2010 00:40:50 +0000 (17:40 -0700)]
nvfx: Initialize variables on error path.
Eric Anholt [Tue, 24 Aug 2010 22:43:56 +0000 (15:43 -0700)]
glsl: Set up uniform initializers by walking the shaders after linking.
Previously, uniform initializers were handled by ir_to_mesa as it made
its Parameters list. However, uniform values are global to all
shaders, and the value set in one Parameters list wasn't propagated to
the other gl_program->Parameters lists. By going back through the
general Mesa uniform handling, we make sure that all gl_programs get
updated values, and also successfully separate uniform initializer
handling from ir_to_mesa gl_program generation.
Fixes:
glsl-uniform-initializer-5.
Eric Anholt [Tue, 24 Aug 2010 22:30:42 +0000 (15:30 -0700)]
glsl: Don't dead-code eliminate a uniform initializer.
Partial fix for glsl-uniform-initializer-5.
Dave Airlie [Sun, 22 Aug 2010 07:28:20 +0000 (17:28 +1000)]
r300g: rename radeong_dri.so to r300_dri.so
acked on irc by Corbin + Marek.
Brian Paul [Tue, 24 Aug 2010 19:18:09 +0000 (12:18 -0700)]
make: Use C++ compiler to link stdc++ library.
glxinfo and glxgears run on swrast and softpipe without undefined symbol
errors.
Vinson Lee [Tue, 24 Aug 2010 19:14:14 +0000 (12:14 -0700)]
configs: Remove -lstdc++ from default.
This patch undoes commit
9b7480cd95c2d1259e23bfb5549cefaa94ebaca1.
A follow-on patch will provide the proper fix.
Henri Verbeet [Tue, 24 Aug 2010 18:51:20 +0000 (20:51 +0200)]
r600g: Add support for PIPE_FORMAT_R32_FLOAT.
Ian Romanick [Wed, 18 Aug 2010 00:40:20 +0000 (17:40 -0700)]
prog_execute: Implement OPCODE_TXL
Fixes bugzilla #29628
Brian Paul [Tue, 24 Aug 2010 16:21:25 +0000 (10:21 -0600)]
glsl2: rename local variable_entry class
With MSVC it seems that this class and its constructor is colliding
with the one in ir_variable_refcount.cpp. Rename the class here to
avoid the collision.
This is a bit of a hack. Can the two variable_entry classes be merged
and shared?
Brian Paul [Tue, 24 Aug 2010 16:01:40 +0000 (10:01 -0600)]
glsl2: move constructor into .cpp file to work around compiler bug
Fixes fd.o bug 29770
The refcount==0 assertion only failed on some systems. One example
being 32-bit Linux with gcc 4.4.4.
Brian Paul [Tue, 24 Aug 2010 15:02:05 +0000 (09:02 -0600)]
docs: updated info about GLSL compiler
Ian or Eric should review this and add/edit as needed.
Brian Paul [Tue, 24 Aug 2010 15:01:54 +0000 (09:01 -0600)]
docs: list the new GLSL compiler
Brian Paul [Tue, 24 Aug 2010 14:04:37 +0000 (08:04 -0600)]
mesa: added isblank() for MSVC
Brian Paul [Tue, 24 Aug 2010 13:51:52 +0000 (07:51 -0600)]
mesa: remove non-existant files from tarball list
Vinson Lee [Tue, 24 Aug 2010 08:16:46 +0000 (01:16 -0700)]
glsl: Add assert to check variable_entry referenced_count after construction.
A variable_entry after construction should have its referenced_count
member set to 0. However, occassionally this isn't the case and
entry->referenced_count has been observed to be a garbage value. This
leads to crashes of several tests in the Piglit test suite.
This patch adds an assert to check that a variable_entry instance has
its referenced_count member initialized to 0 after construction.
Vinson Lee [Tue, 24 Aug 2010 06:58:57 +0000 (23:58 -0700)]
nvfx: Remove unnecessary headers.
Dave Airlie [Tue, 24 Aug 2010 06:10:28 +0000 (16:10 +1000)]
glsl: make 'make clean' work properly.
this has make clean remove all the objects.
Vinson Lee [Tue, 24 Aug 2010 05:27:49 +0000 (22:27 -0700)]
glsl: Silence unused variable warning.
The variable is used but only in the body of an assert.
Vinson Lee [Tue, 24 Aug 2010 05:15:24 +0000 (22:15 -0700)]
r300g: Remove unused variable.
Fixes this GCC warning.
r300_render.c: In function 'r300_draw_flush_vbuf':
r300_render.c:988: warning: unused variable 'r300_render'
Chia-I Wu [Mon, 23 Aug 2010 17:05:12 +0000 (01:05 +0800)]
st/egl: Fix r300/r600 support in KMS backend.
When the kernel driver name is radeon, ask the loader for r300 or r600
depending on the PCI ID.
Chia-I Wu [Mon, 23 Aug 2010 15:03:51 +0000 (23:03 +0800)]
targets/egl: Check against drm_driver_descriptor::name.
drm_driver_descriptor::driver_name is defined to be the name of the
kernel module. We should check against drm_driver_descriptor::name
instead of drm_driver_descriptor::driver_name.
Benjamin Franzke [Sun, 22 Aug 2010 16:24:12 +0000 (18:24 +0200)]
targets/egl: add pipe_r600
KNOWN ISSUE: eglShowScreenSurfaceMESA in st/egl/kms fails
but st/egl/x11 works
Benjamin Franzke [Sun, 22 Aug 2010 16:24:10 +0000 (18:24 +0200)]
targets/egl: rename pipe_radeon to pipe_r300
st/egl/x11/x11_screen.c requests a driver named r300 not radeon
KNOWN ISSUE: breaks st/egl/kms/
st/egl/kms requests a pipe named "radeon"
that will not be found now
so why not leaving pipe_radeon there?
that was possible as long we have only r300g.
now there is also r600g for which st/egl/kms also
requests a pipe named "radeon"
(possible solution in later commit)
Chia-I Wu [Tue, 24 Aug 2010 03:49:55 +0000 (11:49 +0800)]
mesa: Remove extraneous semicolon.
Chia-I Wu [Mon, 23 Aug 2010 09:31:20 +0000 (17:31 +0800)]
st/dri: Remove unnecessary main/mtype.h.
Chia-I Wu [Mon, 23 Aug 2010 09:31:27 +0000 (17:31 +0800)]
st/wgl: Include main/core.h.
Make st/wgl include only main/core.h from core mesa.
Chia-I Wu [Mon, 23 Aug 2010 09:31:38 +0000 (17:31 +0800)]
st/glx: Include main/core.h.
Make st/glx include only main/core.h from core mesa.
Chia-I Wu [Mon, 23 Aug 2010 09:51:42 +0000 (17:51 +0800)]
glsl: Include main/core.h.
Make glsl include only main/core.h from core mesa.
Chia-I Wu [Mon, 23 Aug 2010 09:39:15 +0000 (17:39 +0800)]
mesa: Add core.h.
core.h is the public header of core mesa. GLX, WGL, and GLSL are
supposed to include this header file. It should be noted that headers
included by core.h must not perform feature tests (#if FEATURE_xxx).
Otherwise, we cannot, for example, mix a FEATURE_ES2 libmesagallium.a
with a FEATURE_GL libglsl.a.
Luca Barbieri [Tue, 24 Aug 2010 02:16:42 +0000 (04:16 +0200)]
translate_sse: clear state for each function emission
Fixes #29771.
Eric Anholt [Tue, 24 Aug 2010 00:16:25 +0000 (17:16 -0700)]
glsl: Rely on talloc_autofree_context() instead of trying to free on our own.
Because the static types talloc their names at dlopen time,
talloc_freeing the types at DRI driver screen teardown means that if
the screen gets brought back up again, the names will point at freed
memory. talloc_autofree_context() exists to do just what we want
here: Free memory referenced across the program's lifetime so that we
avoid noise in memory leak checkers.
Fixes: bug #29722 (assertion failure in unigine).
Eric Anholt [Mon, 23 Aug 2010 22:53:16 +0000 (15:53 -0700)]
intel: Add support for MAX_SAMPLES=1 EXT_framebuffer_multisample.
The spec specifically sets the minimum MAX_SAMPLES at 1 to allow exposing
the extension on all implementations, so do so.
Alex Deucher [Tue, 24 Aug 2010 00:18:28 +0000 (20:18 -0400)]
radeon: print chip family for evergreen in renderer string
Dave Airlie [Mon, 23 Aug 2010 23:56:22 +0000 (09:56 +1000)]
r600g: add XPD support
ported from r600c.
Dave Airlie [Mon, 23 Aug 2010 23:18:32 +0000 (09:18 +1000)]
r600g: add CMP support.
ported from r600c, fixes fp-cmp, glsl1-sqrt*
Luca Barbieri [Mon, 23 Aug 2010 22:03:28 +0000 (00:03 +0200)]
nvfx: don't emit dummy commands on nv30
Should fix errors on the original nv30, reported by pmdata.
Eric Anholt [Mon, 23 Aug 2010 21:54:06 +0000 (14:54 -0700)]
glsl: When unable to assign the initializer for a const variable, set it to 0.
This prevents assertion failures or cascading errors after we've
logged the fact that we were unable to handle the initializer.
Fixes unsized-array-non-const-index-2.vert
Luca Barbieri [Mon, 23 Aug 2010 21:21:18 +0000 (23:21 +0200)]
translate_sse: fix x86-64
Eric Anholt [Mon, 23 Aug 2010 20:26:52 +0000 (13:26 -0700)]
glsl: Cleanly fail when a function has an unknown return type.
Bug #29608.
Henri Verbeet [Mon, 23 Aug 2010 19:13:59 +0000 (21:13 +0200)]
r600g: Add support for PIPE_CAP_DEPTH_CLAMP.
Eric Anholt [Mon, 23 Aug 2010 19:54:55 +0000 (12:54 -0700)]
glsl: Rebuild builtins for any() change.
Eric Anholt [Mon, 23 Aug 2010 19:21:33 +0000 (12:21 -0700)]
mesa: Add new ir_unop_any() expression operation.
The previous any() implementation would generate arg0.x || arg0.y ||
arg0.z. Having an expression operation for this makes it easy for the
backend to generate something easier (DPn + SNE for 915 FS, .any
predication on 965 VS)
Eric Anholt [Mon, 23 Aug 2010 19:39:35 +0000 (12:39 -0700)]
glsl: Regenerate builtins with the new sorting.
Eric Anholt [Mon, 23 Aug 2010 19:53:39 +0000 (12:53 -0700)]
ir_to_mesa: Implement f2b by comparing the arg to 0, not the result.
Fixes: glsl-fs-any
Eric Anholt [Mon, 23 Aug 2010 18:29:25 +0000 (11:29 -0700)]
glsl: Count function call outvals as writing to variables for linker checks.
Fixes: glsl-vs-position-outval. Bug #28138 (regnum online)
Ian Romanick [Fri, 13 Aug 2010 00:57:07 +0000 (17:57 -0700)]
glsl2: Include imports.h to get snprintf wrapper for MSVC
Signed-off-by: José Fonseca <jfonseca@vmware.com>
Aras Pranckevicius [Mon, 23 Aug 2010 06:19:51 +0000 (09:19 +0300)]
mesa: Fix msvc build of glsl.
Signed-off-by: José Fonseca <jfonseca@vmware.com>
Luca Barbieri [Mon, 23 Aug 2010 19:43:11 +0000 (21:43 +0200)]
auxiliary: fix nvfx/nv50 primitive splitting for line loops
s->close_first was on the wrong side of the inequality.
Caught by blender.
Thanks to AndrewR for reporting this.
Jerome Glisse [Mon, 23 Aug 2010 19:39:39 +0000 (15:39 -0400)]
r600g: export one component per pixel + r7xx uncompression shader
We need to always at least export one component (wether it's depth
or color. Add valid r7xx shader program for depth decompression.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Kenneth Graunke [Mon, 23 Aug 2010 19:36:40 +0000 (12:36 -0700)]
generate_builtins.py: Generate output in sorted order.
Luca Barbieri [Mon, 23 Aug 2010 18:27:40 +0000 (20:27 +0200)]
nvfx: improve fp temp accounting
Brian Paul [Mon, 23 Aug 2010 00:40:48 +0000 (18:40 -0600)]
tgsi: fix false CondStackTop==0 assertion
Eric Anholt [Mon, 23 Aug 2010 17:57:54 +0000 (10:57 -0700)]
ir_to_mesa: Fix constant array handling to return the temp we created.
We ended up returning CONST[loc] rather than TEMP[loc2]. Things would
*usually* end up working out OK, since the constants often ended up
getting allocated to CONST[loc..loc+columns] with no swizzle. But for
the case where the contigous temporary copy of the swizzled constant
vec4 args was actually needed, we'd end up reading some other constant
values, possibly including ones not actually allocated.
Fixes: glsl-varying-mat3x2.
Carl Worth [Mon, 23 Aug 2010 17:43:27 +0000 (10:43 -0700)]
glcpp: Make standalone preprocessor work with a tty as stdin
Previously glcpp would silently abort if it couldn't fstat the file being
read, (so it would work with stdin redirected from a file, but would not
work with stdin as a tty). The stat was so that glcpp could allocate
a buffer for the file content in a single call.
We now use talloc_realloc instead, (even if the fstat is
possible). This is theoretically less efficient, but quite irrelevant,
(particularly because the standalone preprocessor is used only for
testing).
Carl Worth [Mon, 23 Aug 2010 17:41:30 +0000 (10:41 -0700)]
glcpp: Fix test suite to avoid flagging failed tests as valgrind errors.
We recently added several tests that intentionally trigger
preprocessor errors. During valgrind-based testing, our test script
was noticing the non-zero return value from the preprocessor and
incorrectly flagging the valgrind-based test as failing.
To fix this, we make valgrind return an error code that is otherwise
unused by the preprocessor.
Carl Worth [Mon, 23 Aug 2010 16:42:14 +0000 (09:42 -0700)]
glcpp: Fix segfault in standalone preprocessor for "file not found", etc.
This error message was missing so that the program would simply
segfault if the provided filename could not be opened for some reason.
While we're at it, we add explicit support for a filename of "-" to
indicate input from stdin.
Carl Worth [Mon, 23 Aug 2010 16:35:24 +0000 (09:35 -0700)]
glcpp: Update generated glcpp-lex.c for the last two changes.
This fixes both "#line 0" and "#line XXX YYY" as described in the two
most recent commits.
Carl Worth [Mon, 23 Aug 2010 16:31:42 +0000 (09:31 -0700)]
glcpp: Fix handling of "#line 0"
The existing DECIMAL_INTEGER pattern is the correct thing to use when
looking for a C decimal integer, (that is, a digit-sequence not
starting with 0 which would instead be an octal integer).
But for #line, we really want to accept any digit sequence, (including
"0"), and always interpret it as a decimal constant. So we add a new
DIGITS pattern for this case.
This should fix the compilation failure noted in bug #28138
https://bugs.freedesktop.org/show_bug.cgi?id=28138
(Though the generated file will not be updated until the next commit.)