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largely a merge of the previously discussed origin/gallium-resource-sampling
but updated.
the idea is to allow arbitrary binding of resources, the way opencl, new gl
versions and dx10+ require, i.e.
DCL RES[0], 2D, FLOAT
LOAD DST[0], SRC[0], RES[0]
SAMPLE DST[0], SRC[0], RES[0], SAMP[0]
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I also specified the array sizes in the header so that one can use
the Elements macro on it.
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fixes warning reported by vlee on irc.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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For GL fragColor semantics we need to tell the pipe drivers that the fragment
shader color result is to be replicated to all bound color buffers, this
adds the basic TGSI + documentation.
v2: fix missing comma pointed out by Tilman on mesa-dev.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Fix OpenVG "filter" demo
Program received signal SIGSEGV, Segmentation fault.
0xb7153dc9 in str_match_no_case (pcur=0xbfffe564, str=0x0) at
tgsi/tgsi_text.c:86
86 while (*str != '\0' && *str == uprcase( *cur )) {
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like normal temporaries, but allows to define a number of distinct
arrays, all of which make it explicit that they contain /indexable/
registers.
as a side-effect we're adding support for multi-dimensional destination
registers.
The whole thing looks like this:
DCL TEMPX[0][0..128] # 0 array with 128 registers
ADD TEMPX[0][0], IN[0], IMM[0]
ADD TEMPX[0][1], IN[0], IMM[0]
ABS OUT[0], TEMPX[0][TEMP[0]]
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allows one to specify a safe (bound checked) array
filled with immediates. it works just like a const
array and declares much like our current immediates.
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Hit this parsing geometry shader properties.
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It was only used for D3D's REP/END/BGNFOR/ENDFOR. D3D's aL register is
just like another address register now.
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Not sure why we are open-coding these rather than using standard
library functions.
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Changes in v3:
- Documented the new properties
- Added comments for property values
- Rebased to current master
Changes in v2:
- Caps are added in a separate, subsequent patch
This adds two TGSI fragment program properties that indicate the
fragment coord conventions.
The properties behave as described in the extension spec for
GL_ARB_fragment_coord_conventions, but the default origin in
upper left instead of lower left as in OpenGL.
The syntax is:
PROPERTY FS_COORD_ORIGIN [UPPER_LEFT|LOWER_LEFT]
PROPERTY FS_COORD_PIXEL_CENTER [HALF_INTEGER|INTEGER]
The names have been chosen for consistency with the GS properties
and the OpenGL extension spec.
The defaults are of course the previously assumed conventions:
UPPER_LEFT and HALF_INTEGER.
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This time, INSTANCEID is missing...
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it's a leftover from an early version of geometry shading support.
geometry shaders now encode the primitive size in the PROPERTY token
and don't need special input with their size.
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in particular asm text parsing and sanity checking were missing code
to handle multi-dimensional arrays/geometry shaders
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Also, break out of the for-loop when a matching property is found.
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adds support for properties to all parts of the tgsi framework, plus
introduces a new register which will be used for system generated
values.
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SrcRegister -> Register
SrcRegisterInd -> Indirect
SrcRegisterDim -> Dimension
SrcRegisterDimInd -> DimIndirect
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DstRegister -> Register
DstRegisterInd -> Indirect
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DeclarationRange -> Range
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InstructionPredicate -> Predicate
InstructionLabel -> Label
InstructionTexture -> Texture
FullSrcRegisters -> Src
FullDstRegisters -> Dst
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Rename Semantic.SemanticName to Semantic.Name. Similar for
SemanticIndex, and the members of the tgsi_version struct.
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Drop anonymous 'Extended' fields, have every optional token named
explicitly in its parent. Eg. there is now an Instruction.Label flag,
etc.
Drop destination modifiers and other functionality which cannot be
generated by tgsi_ureg.c, which is now the primary way of creating
shaders.
Pull source modifiers into the source register token, drop the second
negate flag. The source register token is now full - if we need to
expand it, probably best to move all of the modifiers to a new token
and have a single flag for it.
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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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The only valid usage for LOOP/ENDLOOP instructions
is LOOP[0] as a destination register.
The only valid usage for the remaining instructions
is LOOP[0].x as an indirect register.
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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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Same story as in the tgsi_dump.c code (see prev commit).
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The debug functions depend on several util function for os abstractions, and
these depend on debug functions, so a seperate module is not possible.
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