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Use tgsi_sampler struct as a base class. Softpipe subclasses it and adds
the fields it needs.
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This allows us to use SSE codegen with debug builds again.
When PIPE_ARCH_SSE is set (w/ gcc -msse -msse2) we will also use the
gcc SSE intrinsic functions.
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Zero-out the index for disabled execution channels to avoid using potential
garbage values (thus avoiding bad array indexing).
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Fixes progs/vp/arl.txt test.
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Conflicts:
src/gallium/auxiliary/rtasm/rtasm_execmem.c
src/mesa/shader/slang/slang_emit.c
src/mesa/shader/slang/slang_log.c
src/mesa/state_tracker/st_atom_framebuffer.c
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This prevents vertex shaders from referencing invalid memory locations when
the shader is operating on less than four vertices or fragments.
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That's the last of the ARB_v_p opcodes, except for ARL.
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as with constants
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This could be a lot better, but already makes for better code.
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It's hard to form PPC vector immediates so load them from an array.
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Based on the TGSIto SSE2 code generator.
Incomplete and lots of SSE stuff still hanging around but the basic dozen
or so TGSI opcodes are functioning.
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Besides meaning x86 and x86-64 architecture, it also depends on SSE2
support enabled on gcc.
This fixes the linux-debug build.
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