| Commit message (Collapse) | Author | Age | Files | Lines |
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The main purpose of this patch is to increase readability of
the array code by introducing is_unsized_array() to glsl_types.
Some redundent is_array() checks are also removed, and small number
of other related clean ups.
The introduction of is_unsized_array() should also make the
ARB_arrays_of_arrays code simpler and more readable when it arrives.
V2: Also replace code that checks for unsized arrays directly with the
length variable
Signed-off-by: Timothy Arceri <[email protected]>
v3 (Paul Berry <[email protected]>): clean up formatting.
Separate whitespace cleanups to their own patch.
Reviewed-by: Paul Berry <[email protected]>
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Since gl_ClipDistance is lowered from an array of floats to an array
of vec4's during compilation, transform feedback has special logic to
keep track of the pre-lowered array size so that attempting to perform
transform feedback on gl_ClipDistance produces a result with the
correct size.
Previously, this special logic always consulted the vertex shader's
size for gl_ClipDistance. This patch fixes it so that it uses the
geometry shader's size for gl_ClipDistance when a geometry shader is
in use.
Fixes piglit test spec/glsl-1.50/transform-feedback-type-and-size.
v2: Change the type of LastClipDistanceArraySize to "unsigned", and
clarify the comment above it.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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The unit tests added in the previous commits prove some things about the
state of some internal data structures. The most important of these is
that all built-in input and output variables have explicit_location
set. This means that link_invalidate_variable_locations doesn't need to
know the range of non-generic shader inputs or outputs. It can simply
reset location state depending on whether explicit_location is set.
There are two additional assumptions that were already implicit in the
code that comments now document.
- ir_variable::is_unmatched_generic_inout is only used by the linker
when connecting outputs from one shader stage to inputs of another
shader stage.
- Any varying that has explicit_location set must be a built-in. This
will be true until GL_ARB_separate_shader_objects is supported.
As a result, the input_base and output_base parameters to
link_invalidate_variable_locations are no longer necessary, and the code
for resetting locations and setting is_unmatched_generic_inout can be
simplified.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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This will make it easier to unit test this function in successive
patches. Also, correct the prototype in linker.h. It was... wrong.
v2: Split the interface change from adding the unit tests. Suggested by
Paul.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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Previously, Mesa followed the linkage rules outlined in the GLSL
1.20-1.40 specs, which (collectively) said that GLSL versions 1.10 and
1.20 could be linked together, but no other versions could be linked.
In GLSL 4.30, the linkage rules were relaxed so that any two desktop
GLSL versions can be linked together. This change was made because it
reflected the behaviour of nearly all existing implementations (see
Khronos bug 8463). Mesa was one of the few (perhaps the only)
exceptions to prohibit cross-linking of some GLSL versions.
Since the GLSL linkage rules were deliberately relaxed in order to
match the behaviour of existing implementations, it seems appropriate
to relax the rules in Mesa too (even though Mesa doesn't support GLSL
4.30 yet).
Note that linking ES and desktop shaders is still prohibited, as is
linking ES shaders having different GLSL versions.
Fixes piglit tests "shaders/version-mixing {interstage,intrastage}".
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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We were already setting the array size of unsized arrays that appeared
inside unnamed interface blocks, but we weren't updating
ir_variable::interface_type to reflect the new array size, causing
bogus link errors.
This patch causes array_sizing_visitor to keep track of all the
unnamed interface types it sees, and the ir_variables corresponding to
each one. After the visitor runs, a new function,
fixup_unnamed_interface_types(), adjusts each unnamed interface type
to correctly correspond with the array sizes in the ir_variables.
Fixes piglit tests:
- spec/glsl-1.50/execution/unsized-in-unnamed-interface-block-gs
- spec/glsl-1.50/execution/unsized-in-unnamed-interface-block-multiple
Reviewed-by: Jordan Justen <[email protected]>
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Unsized arrays appearing inside named interface blocks now get a
proper size assigned by the array_sizing_visitor.
Fixes piglit tests:
- spec/glsl-1.50/execution/unsized-in-named-interface-block
- spec/glsl-1.50/execution/unsized-in-named-interface-block-gs
- spec/glsl-1.50/linker/unsized-in-named-interface-block
- spec/glsl-1.50/linker/unsized-in-named-interface-block-gs
- spec/glsl-1.50/linker/unsized-in-unnamed-interface-block-gs (*)
(*) is fixed by dumb luck--support for unsized arrays in unnamed
interface blocks will come in a later patch.
Reviewed-by: Jordan Justen <[email protected]>
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Starting with OpenGL 3.2 input limits and output limits for stages may
not match. This means they need to be accounted separately.
No piglit regressions.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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This gives the compiler the chance to inline and not export class symbols
even in the absence of LTO. Saves about 60kb on disk.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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This information will be useful in the i965 back end, since we can
save some compilation effort if we know from the outset that the
shader never calls EndPrimitive().
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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During compilation, we'll use this to determine built-in availability.
The plan is to have a single shader containing every built-in in every
version of the language, but filter out the ones that aren't actually
available to the shader being compiled.
At link time, we don't actually need this filtering capability: we've
already imported prototypes for every built-in that the shader actually
calls, and they're flagged as is_builtin(). The linker doesn't import
any additional prototypes, so it won't pull in any unavailable
built-ins. When resolving prototypes to function definitions, the
linker ensures the values of is_builtin() match, which means that a
shader can't trick the linker into importing the body of an unavailable
built-in by defining a suspiciously similar prototype.
In other words, during linking, we can just pass in NULL. It will work
out fine.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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A signature is a built-in if and only if builtin_info != NULL, so we
don't actually need a separate flag bit. Making a boolean-valued
method allows existing code to ask the same question while not worrying
about the internal representation.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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This patch extracts the following logic from
validate_vertex_shader_executable():
(a) Generate an error if the shader writes to both gl_ClipDistance and
gl_ClipVertex.
(b) Record whether the shader writes to gl_ClipDistance in
gl_shader_program for use by the back-end.
(c) Record the size of gl_ClipDistance in gl_shader_program for use by
transform feedback logic.
And moves it into a function that is shared between vertex and
geometry shaders.
Strictly speaking we only need to have shared logic for (b) and (c)
right now (since (a) only matters in compatibility contexts, and we're
only implementing geometry shaders in core contexts right now). But
the three are closely related enough that it seems sensible to keep
them together.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Tested by examining generated TGSI shaders from piglit/glsl-routing.
Cc: [email protected]
Reviewed-by: Henri Verbeet <[email protected]>
Tested-by: Henri Verbeet <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Commit 7cfefe6965d50 introduced a check for whether linked->Type equals
GL_GEOMETRY_SHADER. However, linked may be NULL due to an earlier error
condition.
Since the entire function after the error path is (or should be) guarded
by linked != NULL checks, we may as well just return early and remove
the checks.
Fixes crashes in 9 Piglit tests.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec
contains some tricky rules for how the sizes of geometry shader input
arrays are related to the input layout specification. In essence,
those rules boil down to the following:
- If an input array declaration does not specify a size, and it
follows an input layout declaration, it is sized according to the
input layout.
- If an input layout declaration follows an input array declaration
that didn't specify a size, the input array declaration is given a
size at the time the input layout declaration appears.
- All input layout declarations and input array sizes must ultimately
match. Inconsistencies are reported as soon as they are detected,
at compile time if the inconsistency is within one compilation unit,
otherwise at link time.
- At least one compilation unit must contain an input layout
declaration.
(Note: the geom_array_resize_visitor class was contributed by Bryan
Cain <[email protected]>.)
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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This gets piglit's geometry-basic test running.
TODO: Still need to validate that the GS layout qualifiers don't get used
in places they shouldn't (like an interface block, or a particular shader
input or output)
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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From section 2.15 (Geometry Shaders) the OpenGL 3.2 spec:
A program object that includes a geometry shader must also include
a vertex shader; otherwise a link error will occur.
Reviewed-by: Paul Berry <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Since geometry shader inputs are arrays (where the array index
indicates which vertex is being examined), varying packing needs to
treat them differently.
Reviewed-by: Ian Romanick <[email protected]>
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This commit adds all of the parsing and semantics for GLSL 150 style
geometry shaders.
v2 (Paul Berry <[email protected]>): Add a few missing calls to
get_pipeline_stage(). Fix some signed/unsigned comparison warnings.
Fix handling of NULL consumer in assign_varying_locations().
v3 (Bryan Cain <[email protected]>): fix indexing order of 2D
arrays. Also, allow interpolation qualifiers in geometry shaders.
v4 (Paul Berry <[email protected]>): Eliminate
get_pipeline_stage()--it is no longer needed thanks to 030ca23 (mesa:
renumber shader indices according to their placement in pipeline).
Remove 2D stuff. Move vertices_per_prim() to ir.h, so that it will be
accessible from outside the linker. Remove
inject_num_vertices_visitor. Rework for GLSL 1.50.
Reviewed-by: Ian Romanick <[email protected]>
v5 (Paul Berry <[email protected]>): Split out
do_set_program_inouts() argument refactoring to a separate patch.
Move geom_array_resizing_visitor to later in the series.
Reviewed-by: Kenneth Graunke <[email protected]>
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There's no reason to be clever about this. By making separate
allocations for vertex and fragment shaders, we'll allow geometry
shaders to be added without introducing any complication.
Reviewed-by: Kenneth Graunke <[email protected]>
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Commit 586b4b5 (glsl: Also update implicit sizes of varyings at link
time) extended update_array_sizes() to apply to both uniforms and
shader ins/outs. However, doing creates problems for geometry
shaders, because update_array_sizes() assumes that variables with
matching names in different parts of the pipeline should have the same
sizes. With the addition of geometry shaders, this is no longer true
(e.g. both vertex and geometry shaders have a gl_ClipDistance output
variable, but there's no reason these variables should have the same
sizes).
The original reason for commit 586b4b5 (avoid problems with
gl_TexCoord being 0 length) has since been addressed by commit 6f53921
(linker: Ensure that unsized arrays have a size after linking). So go
ahead and switch update_array_sizes() back to only acting on uniforms.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Our previous justification for leaving this function out of glsl_type
was that it implemented counting rules that were specific to GLSL
1.50. However, these counting rules also describe the number of
varying slots that Mesa will assign to a varying in the absence of
varying packing. That's useful to be able to compute from outside of
the linker code (a future patch will use it from
ir_set_program_inouts.cpp). So go ahead and move it to glsl_type.
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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This patch changes link_shaders() so that it sets prog->LinkStatus to
true when it starts, and then relies on linker_error() to set it to
false if a link failure occurs.
Previously, link_shaders() would set prog->LinkStatus to true halfway
through its execution; as a result, linker functions that executed
during the first half of link_shaders() would have to do their own
success/failure tracking; if they didn't, then calling linker_error()
would add an error message to the log, but not cause the link to fail.
Since it wasn't always obvious from looking at a linker function
whether it was called before or after link_shaders() set
prog->LinkStatus to true, this carried a high risk of bugs.
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Previously we failed to link (which is correct), but we did not output
an error message, which could have been confusing for users.
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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A comment in link_intrastage_shaders(), and an if-test that followed
it, seemed to indicate that link_uniform_blocks() would return a
negative value in the event of an error. But this is not the
case--all error checking has already been performed by
validate_intrastage_interface_blocks(), and link_uniform_blocks() can
only return unsigned values.
So get rid of the if-test and change the return type of
link_intrastage_shaders() to clarify that it can only return unsigned
values.
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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All compilation units need to agree on the binding point, if they
specify one at all.
v2: Use binding, not constant_value.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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varyings.
Reviewed-by: Paul Berry <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Fabian Bieler <[email protected]>
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This eliminates built-in varyings such as gl_Color, gl_SecondaryColor,
gl_TexCoord, and gl_FogFragCoord if they are unused by the next stage or
not written at all (e.g. gl_TexCoord elements). The gl_TexCoord array is
broken down into separate vec4s if needed.
v2: - use a switch statement in varying_info_visitor::visit(ir_variable*)
- use snprintf
- disable the optimization for GLES2
Reviewed-by: Ian Romanick <[email protected]>
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We counted even the varyings which were later eliminated, which was
suboptimal.
Reviewed-by: Ian Romanick <[email protected]>
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This ensures that inter-shader outputs and inputs are properly eliminated
across 3 or more shader stages. The behavior is unchanged with 2 or less
shader stages.
For example, elimination of unused FS inputs causes elimination of matching
GS outputs, which causes elimination of the GS inputs that were needed for
evaluation of the eliminated GS outputs, which causes elimination of
matching VS outputs. An unused FS input is all that's needed to trigger
this chain reaction.
Reviewed-by: Ian Romanick <[email protected]>
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See my explanation in mtypes.h.
v2: don't do this in gallium
v3: also updated the comment at the gl_shader_type definition
Reviewed-by: Ian Romanick <[email protected]>
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We were duplicating this code all over the place, and they all would need
updating for the next set of shader targets.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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We were counting uniforms located in UBOs against the default uniform
block limit, while not doing any counting against the specific combined
limit.
Note that I couldn't quite find justification for the way I did this, but
I think it's the only sensible thing: The spec talks about components, so
each "float" in a std140 block would count as 1 component and a "vec4"
would count as 4, though they occupy the same amount of space. Since GPU
limits on uniform buffer loads are surely going to be about the size of
the blocks, I just counted them that way.
Fixes link failures in piglit
arb_uniform_buffer_object/maxuniformblocksize when ported to geometry
shaders on Paul's GS branch, since in that case the max block size is
bigger than the default uniform block component limit.
Reviewed-by: Ian Romanick <[email protected]>
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Verify that interface blocks match when linking separate shader
stages into a program.
Fixes piglit glsl-1.50 tests:
* linker/interface-blocks-vs-fs-member-count-mismatch.shader_test
* linker/interface-blocks-vs-fs-member-order-mismatch.shader_test
Signed-off-by: Kenneth Graunke <[email protected]>
Signed-off-by: Jordan Justen <[email protected]>
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Verify that interface blocks match when combining compilation
units at the same stage. (For example, when merging all vertex
shaders.)
Fixes piglit glsl-1.50 test:
* linker/interface-blocks-multiple-vs-member-count-mismatch.shader_test
v5 (Ken): Rename to link_interface_blocks.cpp and drop the separate .h
file for consistency with other linker code. Remove "ok" variable.
Fold cross_validate_interface_blocks into its caller.
Signed-off-by: Jordan Justen <[email protected]>
Signed-off-by: Kenneth Graunke <[email protected]>
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Convert interface blocks with instance names into flat
interface blocks without an instance name.
Signed-off-by: Jordan Justen <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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do_common_optimization may need to make choices about whether to emit
certain kinds of instructions. gl_context::ShaderCompilerOptions
contains exactly that information, so it makes sense to pass it in.
Rather than passing the whole array, pass the structure for the stage
that's currently being worked on.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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Const.MaxTextureImageUnits -> Const.FragmentProgram.MaxTextureImageUnits
Const.MaxVertexTextureImageUnits -> Const.VertexProgram.MaxTextureImageUnits
etc.
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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Since half of ir_validate uses asserts() (the other using printf() then
abort()), there's not much use to calling it in a release build. Cuts
6.3% of the startup time of TF2.
NOTE: This is a candidate for the stable branches.
Reviewed-by: Kenneth Graunke <[email protected]>
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This patch makes the following search-and-replace changes:
gl_frag_attrib -> gl_varying_slot
FRAG_ATTRIB_* -> VARYING_SLOT_*
FRAG_BIT_* -> VARYING_BIT_*
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Tested-by: Brian Paul <[email protected]>
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This patch makes the following search-and-replace changes:
gl_vert_result -> gl_varying_slot
VERT_RESULT_* -> VARYING_SLOT_*
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Tested-by: Brian Paul <[email protected]>
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The parsing logic is moved to a new function in the GLSL module,
parse_program_resource_name(). This name was chosen because it should
eventually be useful for handling everything that OpenGL 4.3 calls
"program resources" (e.g. uniforms, vertex inputs, fragment outputs,
and transform feedback varyings).
Future patches will make use of this function for linking transform
feedback varyings.
NOTE: This is a candidate for the 9.1 branch.
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Use the function added in the previous commit.
This temporarily causes gles3conform
uniform_buffer_object_index_of_not_active_block,
uniform_buffer_object_inherit_and_override_layouts, and
uniform_buffer_object_repeat_global_scope_layouts to assertion fail.
This is fixed in the next commit.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
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The way a variable is tested for this property is about to change, and
this makes the code easier to modify.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Carl Worth <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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This patch replaces the three ir_variable_mode enums:
- ir_var_in
- ir_var_out
- ir_var_inout
with the following five:
- ir_var_shader_in
- ir_var_shader_out
- ir_var_function_in
- ir_var_function_out
- ir_var_function_inout
This eliminates a frustrating ambiguity: it used to be impossible to
tell whether an ir_var_{in,out} variable was a shader in/out or a
function in/out without seeing where the variable was declared in the
IR. This complicated some optimization and lowering passes, and would
have become a problem for implementing varying structs.
In the lisp-style serialization of GLSL IR to strings performed by
ir_print_visitor.cpp and ir_reader.cpp, I've retained the names "in",
"out", and "inout" for function parameters, to avoid introducing code
churn to the src/glsl/builtins/ir/ directory.
Note: a couple of comments in the code seemed to indicate that we were
planning for a possible future in which geometry shaders could have
shader-scope inout variables. Our GLSL grammar rejects shader-scope
inout variables, and I've been unable to find any evidence in the GLSL
standards documents (or extensions) that this will ever be allowed, so
I've eliminated these comments.
Reviewed-by: Carl Worth <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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This looks like a copy-and-paste left over.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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linker.cpp is getting pretty big, and we're about to add even more
varying packing code, so split out the linker code that concerns
varyings to its own file.
Reviewed-by: Kenneth Graunke <[email protected]>
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Previously this macro existed in 3 separate places, some inside the
intel driver and some outside of it. It makes more sense to have it
in main/macros.h
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Not sure what was going on here, but running piglit with debug builds
might be a good plan :-)
Reviewed-by: Kenneth Graunke <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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