skia2/tests/sksl/blend/BlendDstAtop.glsl

#version 400
out vec4 sk_FragColor;
in vec4 src;
in vec4 dst;
void main() {
    sk_FragColor = dst.w * src + (1.0 - src.w) * dst;

}
Create golden outputs for SkSL blend functions. Several blend functions generate a surprisingly large amount of code, and appear to have opportunities for further optimization. At any rate, if we make compiler changes that would affect the output of a blend function, I think we would want to see the changes reflected in our golden outputs. Change-Id: Iff612dcd4bad8824b5e6e97413ffce19e5ea1c0e Reviewed-on: https://skia-review.googlesource.com/c/skia/+/318336 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> 2020-09-21 21:01:22 +00:00			`#version 400`
Add golden outputs for the Metal backend. This CL also updates the blend tests to use sk_FragColor instead of returning a half4, as the Metal backend assumes that a fragment processor's `main` will return void and always synthesizes a `return *_out;` at the end. (context link: https://osscs.corp.google.com/android/platform/superproject/+/master:external/skqp/src/sksl/SkSLMetalCodeGenerator.cpp;l=803;drc=842d31b14159626054e01dd32826563a8f4214bf ) BYPASS_INCLUSIVE_LANGUAGE_REASON=see http://b/168134166 Change-Id: I330a456bf25ee72d3a29c59cd624625378ae80a0 Bug: skia:10649, skia:10757, skia:10758, skia:10759, skia:10760, skia:10761, skia:10762 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/319409 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-09-25 17:35:58 +00:00			`out vec4 sk_FragColor;`
Only include one variable per declaration statement This removes VarDeclarationsStatement entirely. VarDeclaration instances appear directly as statements in Programs. SkSL that declares multiple variables in a single declaration is transformed to represent that as a series of VarDeclaration statements. Similarly, global variable declarations are represented by GlobalVarDeclaration program elements, one per variable. Bug: skia:10806 Change-Id: Idd8a2d971a8217733ed57f0dd2249d62f2f0e9c5 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/323102 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: John Stiles <johnstiles@google.com> 2020-10-06 18:43:32 +00:00			`in vec4 src;`
			`in vec4 dst;`
Add golden outputs for the Metal backend. This CL also updates the blend tests to use sk_FragColor instead of returning a half4, as the Metal backend assumes that a fragment processor's `main` will return void and always synthesizes a `return *_out;` at the end. (context link: https://osscs.corp.google.com/android/platform/superproject/+/master:external/skqp/src/sksl/SkSLMetalCodeGenerator.cpp;l=803;drc=842d31b14159626054e01dd32826563a8f4214bf ) BYPASS_INCLUSIVE_LANGUAGE_REASON=see http://b/168134166 Change-Id: I330a456bf25ee72d3a29c59cd624625378ae80a0 Bug: skia:10649, skia:10757, skia:10758, skia:10759, skia:10760, skia:10761, skia:10762 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/319409 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-09-25 17:35:58 +00:00			`void main() {`
Eliminate inliner temporary variables for top-level-exit functions. When we determine that a function only contains a single return statement and it is at the top level (i.e. not inside any scopes), there is no need to create a temporary variable and store the result expression into a variable. Instead, we can directly replace the function-call expression with the return-statement's expression. Unlike my previous solution, this does not require variable declarations to be rewritten. The no-scopes limitation makes it slightly less effective in theory, but in practice we still get almost all of the benefit. The no-scope limitation bites us on structures like @if (true) { return x; } else { return y; } Which will optimize away the if, but leave the scope: { return x; } However, this is not a big deal; the biggest wins are single-line helper functions like `guarded_divide` and `unpremul` which retain the full benefit. Change-Id: I7fbb725e65db021b9795c04c816819669815578f Reviewed-on: https://skia-review.googlesource.com/c/skia/+/345167 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-12-17 19:38:56 +00:00			`sk_FragColor = dst.w * src + (1.0 - src.w) * dst;`
Create golden outputs for SkSL blend functions. Several blend functions generate a surprisingly large amount of code, and appear to have opportunities for further optimization. At any rate, if we make compiler changes that would affect the output of a blend function, I think we would want to see the changes reflected in our golden outputs. Change-Id: Iff612dcd4bad8824b5e6e97413ffce19e5ea1c0e Reviewed-on: https://skia-review.googlesource.com/c/skia/+/318336 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> 2020-09-21 21:01:22 +00:00
			`}`