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It's a ?: that operates per-component on vectors. Will be used in
upcoming lowering pass for ldexp and the implementation of frexp.
csel(selector, a, b):
per-component result = selector ? a : b
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Each ir_factory needs an instruction list and memory context in order to
be useful. Rather than creating an object and manually assigning these,
we can just use optional parameters in the constructor.
This makes it possible to create a ready-to-use factory in one line:
ir_factory body(&sig->body, mem_ctx);
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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Adding new convenience emitters makes it easier to generate IR involving
these opcodes.
bitfield_insert is particularly useful, since there is no expr() for
quadops.
v2: Add fma() and rename lrp() operands to x/y/a to match the GLSL
specification (suggested by Matt Turner). Fix whitespace issues.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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IR builder already offers a lot of swizzling functions, such as
swizzle_xxxx, swizzle_z, or swizzle_for_size.
The swizzle_xxxx style is convenient if you statically know which
components you want. swizzle_for_size is great if you want to select
the first few components. However, if you want to select components
based on, say, a loop counter, none of those are sufficient.
IR builder actually already had support for arbitrary swizzling, but
didn't expose it. This patch exposes that API.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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dotlike() uses ir_binop_mul for scalars, and ir_binop_dot for vectors.
When generating built-in functions, we often want to use regular
multiply for scalar signatures, and dot() for vector signatures.
ir_binop_dot only works on vectors, so we have to switch opcodes,
even if the code is otherwise identical. dotlike() makes this easy.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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We use "ret" as the function name since "return" is a C++ keyword, and
"ir_return" is already a class name.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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This adds two new signatures:
assign(lhs, rhs, condition, writemask);
assign(lhs, rhs, condition);
All the other existing APIs still exist.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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Now that we have the ir_expression constructor that does type inference,
this is trivial to do.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
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Add two overloaded variants of
ir_if *if_tree()
The new functions allow one to chain together if-trees within a single C++
expression that resembles a real if-statement.
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Using this enum improves the readibility of calls to assign(), whose third
argument is a writemask.
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Add method ir_factory::constant. This little method constructs an
ir_constant using the factory's mem_ctx.
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Add the following functions, each of which construct the similarly named
ir expression:
div, round_even, clamp
equal, less, greater, lequal, gequal
logic_not, logic_and, logic_or
bit_not, bit_or, bit_and, lshift, rshift
f2i, i2f, f2u, u2f, i2u, u2i
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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This eliminates unexpected behavior due to unitialized values.
Reviewed-by: Ian Romanick <[email protected]>
Signed-off-by: Chad Versace <[email protected]>
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Reviewed-by: Jose Fonseca <[email protected]>
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This swizzles away unwanted components, while preserving the order of
the ones that remain.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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I needed to compute logs and square roots in a patch I was working on,
and wanted to use the convenient interface. We already have a similar
constructor for binops; adding one for unops seems reasonable.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
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Reviewed-by: Kenneth Graunke <[email protected]>
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v2: Fix writemask setup for non-vec4 assignments.
Reviewed-by: Kenneth Graunke <[email protected]>
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This lets us significantly shorten p->instructions->push_tail(ir), and
will be used in a few more places.
Reviewed-by: Kenneth Graunke <[email protected]>
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Now we can fold a bunch of our expression setup in ff_fragment_shader
into single-line, parseable commits.
v2: Make it actually work. I wasn't setting num_components in the
mask structure, and not setting up a mask structure is way easier.
Reviewed-by: Kenneth Graunke <[email protected]>
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Having to explicitly dereference is irritating and bloats the code,
when the compiler can detect and do the right thing.
v2: Use a little shim class to produce the automatic dereference
generation at compile time as opposed to runtime, while also
allowing compile-time type checking.
Reviewed-by: Kenneth Graunke <[email protected]>
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The C++ constructors with placement new, while functional, are
extremely verbose, leading to generation of simple GLSL IR expressions
like (a * b + c * d) expanding to many lines of code and using lots of
temporary variables. By creating a new ir_builder.h that puts simple
generators in our namespace and taking advantage of ralloc_parent(),
we can generate much more compact code, at a minor runtime cost.
v2: Replace ir_instruction usage with just ir_rvalue.
v3: Drop remaining missed as_rvalue() in v2.
Reviewed-by: Kenneth Graunke <[email protected]>
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