The previous behavior leaked Skia-internal concepts into public SkSL.
Users coming from GLSL will expect that bindable/sampleable objects are
uniform (just like texture2D). This keeps the old support around (and
tested), but updates all of our examples to use 'uniform'.
Bug: skia:10679
Change-Id: I0c98162f5e21dad7014d9778ceb26143d2f6030e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/332376
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
There is no more 'inout half4 color'. Effects return their output color.
If an effect wants the input color, it must use the (already existing)
approach of sampling a nullptr input shader.
The change is guarded for Chromium (so we can update their runtime color
filters in skia_renderer.cc).
For the GPU backend, FPs can now override usesExplicitReturn to indicate
that their emitCode will generate a return statement. If that's true,
then writeProcessorFunction doesn't inject the automatic return of the
output color, and emitFragProc will *always* wrap that FP in a helper
function, even as a top-level FP. GrSkSLFP opts in to this behavior, so
that the user-supplied return becomes the actual return in the FP's
emitCode.
Adapting the skvm code to this wasn't too bad: It looks fragile (what
happens if there are multiple returns?), but that's not really possible
today, without varying control flow.
Bug: skia:10613
Change-Id: I205b81fd87dd32bab30b6d6d5fc78853485da036
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/310756
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Runtime effects previously allowed two kinds of global input variables:
'in' variables could be bool, int, or float. 'uniform' could be float,
vector, or matrix. Uniform variables worked like you'd expect, but 'in'
variables were baked into the program statically. There was a large
amount of machinery to make this work, and it meant that 'in' variables
needed to have values before we could make decisions about program
caching, and before we could catch some errors. It was also essentially
syntactic sugar over the client just inserting the value into their SkSL
as a string. Finally: No one was using the feature.
To simplify the mental model, and make the API much more predictable,
this CL removes 'in' variables entirely. We no longer need to
"specialize" runtime effect programs, which means we can catch more
errors up front (those not detected until optimization). All of the API
that referred to "inputs" (the previous term that unified 'in' and
'uniform') now just refers to "uniforms".
Bug: skia:10593
Change-Id: I971f620d868b259e652b3114f0b497c2620f4b0c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/309050
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
This will allow us to enable the ClangTidy check
performance-for-range-copy.
Change-Id: I11f152ffe458f5f353da8715ffd2fd47cf4e71a7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306946
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Two related things:
1) SkRuntimeEffect will allow null child shaders when calling
makeshader. This will produce a GrSkSLFP with null FP children.
Fix some code that assumed that children were non-null.
2) Change the input color passed to any children to be the SkSLFP's
input color, rather than the default (white). This lets nullptr
children in runtime effect have the desired behavior (they are the
paint color or similar, depending on context).
Change-Id: Iabffc50b0a893a56403c5240f32a5da6a88d81f6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/301980
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
With the CPU backend, there is no GrContext on the canvas, so we were
sending errors to the default handler (SkDebugf + assert), so editing
shaders was impossible. Now they fail gracefully (and produce a popup
window with the message).
Change-Id: I29bad24f201be59ba1cec45f446a433c01cf86dc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/297461
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Change-Id: I2d95c63de18125e6258709b48b03abd7904b7537
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/278596
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Having GrAtlasManager.h in GrContextPriv.h was needlessly propagating dependence on that header.
Change-Id: Idf5836f1e217ecd2da91f751b488a63a884c02ce
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/281739
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
- Expose shader error handler on GrBaseContextPriv
- Use that to report errors that happen during (late) SkSL conversion
- Remove various asserts. We expect these functions not to fail, but
they absolutely can for any kind of error that gets past the first
compile in SkRuntimeEffect::Make. We'll still make a GLSLFP, but it
won't inject any code, so the resulting shader will *also* fail to
compile. Injecting our own errors first gives the user a better idea
what's actually broken.
- SkSLSlide also reports errors via the error handler now, too.
Change-Id: I4b871cdaa5e3217b042ebf000bb7474afaeab04c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/275679
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Change-Id: Id046199edd63535ef07e1dfa65fbc7c0f8cefd00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269371
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This reverts commit d4bf54eac6.
Change-Id: I65bfea4d880de29394e25d44d781fd18508fe337
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/266942
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Change-Id: I4647d0f4a098acf399e1add1d87ca0752d0fdf90
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/266381
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Add framework for unit tests that draw (CPU and GPU) with a runtime
shader, as well as couple example tests.
Change-Id: I43b3b39e86634ec55521a2689a4c55c21939dce5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/262809
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Bundling the pipeline stage arguments also simplifies the code in
several spots.
Change-Id: I85e81b436a39378f753cc9404b6eeb27fe055525
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261778
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This makes the effect *be* the factory, so we can get rid of
SkRuntimeShaderFactory (and later, SkColorFilterFactory).
Change-Id: I2cd95f1380a0ec1e65fe5a18b1226c042598a8bd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261439
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
- Change SkRuntimeEffect::Make so *it* can fail, and returns
[Effect, ErrorText].
- Initial tests just test for expected failure conditions.
Next steps are to add tests for effects that should work,
and to validate results on CPU and GPU.
Change-Id: Ibac8c3046104577434034263e9e4a4b177e89129
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/261095
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Only works on GPU backend for now, and still only supports
single-argument sample (at original coords).
Change-Id: I4c36ebd0c370ca65126786802c5ea268c3f32edd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/260899
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Adds a new structure to describe the inputs, including type,
shape, name, etc. This removes any references to the type
variables in the compiler's context, and centralizes the
logic for parsing those type variables.
Also normalizes the rules for what types are supported.
(This was inconsistent among the various functions before).
Now:
- bool and int must be 'in'
- float may be 'in' or 'uniform'
- float[2-4] and matrices must be 'uniform'
Includes a new Slide that allows for interactive editing
of a runtime shader.
Change-Id: Ic2af68a80c8bb645ba96417c430da24de0a9c2d8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/260497
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
