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These haven't been used by the mesa state tracker since the
conversion to tgsi_ureg, and it seems that none of the
other state trackers are using it either.
This helps simplify one of the biggest suprises when starting off with
TGSI shaders.
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Provide a dummy implementation in the GL state tracker (move 0.5 to
the destination regs).
At some point, a motivated person could add a better
implementation of noise. Currently not even the nvidia
binary drivers do anything more than this. In any case, the
place to do this is in the GL state tracker, not the poor
driver.
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This fixes some issues when "return"ing from nested loops/conditionals.
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Manual merge of ureg changes on the branch. Too much unrelated stuff
for a proper merge.
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Can be implemented with CMP src2, src1, src0
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SOA dependencies can happen when a register is used both as a source and
destination and the source is swizzled. For example:
MOV T, T.yxwz; would expand into:
MOV t0, t1;
MOV t1, t0;
MOV t2, t3;
MOV t3, t2;
The second instruction will produce the wrong result since we wrote to t0
in the first instruction. We need to use an intermediate temporary to fix
this.
This will take more work to fix for all TGSI instructions. This seems to
happen with MOV instructions more than anything else so fix that case now
and warn on others.
Fixes piglit glsl-vs-loop test (when not using SSE). See bug 23317.
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This fixes invalid values for CondStackTop, LoopStackTop, etc.
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The LOOP/ENDLOOP pair is renamed to BGNFOR/ENDFOR as its behaviour
is similar to a C language for-loop.
The BGNLOOP2/ENDLOOP2 pair is renamed to BGNLOOP/ENDLOOP as now
there is no name collision.
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Various opcodes which can be implemented trivially with other TGSI opcodes,
such as matrix multiplication and negation. These were not used by any
state tracker or implemented by any of the drivers.
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This is a source of ongoing confusion. TGSI has multiple names for
opcodes where the same semantics originate in multiple shader APIs.
For instance, TGSI includes both Mesa/GLSL and DX/SM30 names for
opcodes with the same semantics, but aliases those names to the same
underlying opcode number.
This makes it very difficult to visually inspect two sets of opcodes
(eg in state tracker & driver) and check if they implement the same
functionality.
This patch arbitarily rips out the versions of the opcodes not currently
favoured by the mesa state tracker and leaves us with a single name
for each distinct operation.
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Remove the need to have a pointer in this struct by just including
the immediate data inline. Having a pointer in the struct introduces
complications like needing to alloc/free the data pointed to, uncertainty
about who owns the data, etc. There doesn't seem to be a need for it,
and it is unlikely to make much difference plus or minus to performance.
Added some asserts as we now will trip up on immediates with more
than four elements. There were actually already quite a few such asserts,
but the >4 case could be used in the future to specify indexable immediate
ranges, such as lookup tables.
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Can now guarantee alignment in the initial allocation of the tgsi exec machine.
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Centralize the creation, initialization and destruction of this struct.
Use align_malloc instead of home-brew alternatives.
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Includes the TGSI interpreter, but not the SSE/PPC/etc code generators.
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The TGSI interpeter operates in SOA style. We need to check for data
dependencies in instructions which read from and write to the same register.
For now just adding some debug code to detect that condition. Actual fixes
to follow.
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Check for NaN/Inf, print exec vectors, print temp registers.
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Fixes segfault when sampling 1D textures.
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instructions
These texture types were defined but never put to use.
For the time being though, the Mesa->TGSI translater isn't emitting these
targets. See the XXX comment in map_texture_target().
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RSQ test 2 (reciprocal square toot of negative value)
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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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Zero-out the index for disabled execution channels to avoid using potential
garbage values (thus avoiding bad array indexing).
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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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