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meson: reinstate LLVM requirement for r300 and enforce it for i915 too

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r300 originally required LLVM because some r300 chips run vertex shaders
on the CPU. i915 always runs vertex shaders on the CPU.

The list of drivers in enable_if is sorted.

Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36545>
This commit is contained in:
Marek Olšák 2025-08-03 23:52:19 -04:00 • committed by Marge Bot
parent fee8e92855
commit b8b38d38b1
1 changed files with 9 additions and 3 deletions
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12
meson.build
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@ -213,9 +213,11 @@ foreach gallium_driver : gallium_drivers
pre_args += '-DHAVE_@0@'.format(gallium_driver.to_upper())
endforeach
with_llvm = with_llvm \
.enable_if(with_gallium_radeonsi and amd_with_llvm, error_message : 'RadeonSI Gallium driver configured to require LLVM') \
.enable_if(with_gallium_i915, error_message : 'i915 Gallium driver requires LLVM for vertex shaders') \
.enable_if(with_gallium_llvmpipe, error_message : 'LLVMPipe Gallium driver requires LLVM') \
.enable_if(with_gallium_r300, error_message : 'R300 Gallium driver requires LLVM for vertex shaders') \
.enable_if(with_gallium_r600 and amd_with_llvm, error_message : 'R600 Gallium driver configured to require LLVM') \
.enable_if(with_gallium_llvmpipe, error_message : 'LLVMPipe Gallium driver requires LLVM')
.enable_if(with_gallium_radeonsi and amd_with_llvm, error_message : 'RadeonSI Gallium driver configured to require LLVM')
# compatibility for "swrast" as an internal-ish driver name
with_gallium_swrast = with_gallium_softpipe or with_gallium_llvmpipe
@ -1778,6 +1780,10 @@ if dep_llvm.found()
error('Lavapipe and llvmpipe require LLVM draw support.')
endif
if (with_gallium_i915 or with_gallium_r300) and not draw_with_llvm
error('i915 and R300 require LLVM draw support for vertex shaders.')
endif
if host_machine.system() != 'windows'
# LLVM can be built without rtti, turning off rtti changes the ABI of C++
# programs, so we need to build all C++ code in mesa without rtti as well to
@ -1810,7 +1816,7 @@ else
endif
amd_with_llvm = amd_with_llvm and dep_llvm.found()
pre_args += '-DLLVM_AVAILABLE=@0@'.format(dep_llvm.found().to_int())
pre_args += '-DDRAW_LLVM_AVAILABLE=@0@'.format((dep_llvm.found() and draw_with_llvm).to_int())
pre_args += '-DDRAW_LLVM_AVAILABLE=@0@'.format(draw_with_llvm.to_int())
pre_args += '-DAMD_LLVM_AVAILABLE=@0@'.format(amd_with_llvm.to_int())
pre_args += '-DGALLIVM_USE_ORCJIT=@0@'.format((dep_llvm.found() and llvm_with_orcjit).to_int())