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skia2/tests/sksl/blend/BlendSrcOver.asm.frag

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Enable SPIR-V disassembly output from skslc. We now have SPIR-V golden outputs for `blend` and `shared` tests. This exposes a handful of SPIR-V limitations for us to address. Change-Id: Ie5278889b8a61432403d06231b17765885bee0ac Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337182 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
2020-11-20 21:28:50 +00:00
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %sk_FragColor %sk_Clockwise %src %dst
OpExecutionMode %main OriginUpperLeft
OpName %sk_FragColor "sk_FragColor"
OpName %sk_Clockwise "sk_Clockwise"
OpName %src "src"
OpName %dst "dst"
OpName %main "main"
OpDecorate %sk_FragColor RelaxedPrecision
OpDecorate %sk_FragColor Location 0
OpDecorate %sk_FragColor Index 0
OpDecorate %sk_Clockwise RelaxedPrecision
OpDecorate %sk_Clockwise BuiltIn FrontFacing
OpDecorate %src RelaxedPrecision
OpDecorate %dst RelaxedPrecision
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
OpDecorate %16 RelaxedPrecision
Enable SPIR-V disassembly output from skslc. We now have SPIR-V golden outputs for `blend` and `shared` tests. This exposes a handful of SPIR-V limitations for us to address. Change-Id: Ie5278889b8a61432403d06231b17765885bee0ac Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337182 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
2020-11-20 21:28:50 +00:00
OpDecorate %18 RelaxedPrecision
OpDecorate %20 RelaxedPrecision
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
OpDecorate %21 RelaxedPrecision
Enable SPIR-V disassembly output from skslc. We now have SPIR-V golden outputs for `blend` and `shared` tests. This exposes a handful of SPIR-V limitations for us to address. Change-Id: Ie5278889b8a61432403d06231b17765885bee0ac Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337182 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
2020-11-20 21:28:50 +00:00
OpDecorate %23 RelaxedPrecision
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%sk_FragColor = OpVariable %_ptr_Output_v4float Output
%bool = OpTypeBool
%_ptr_Input_bool = OpTypePointer Input %bool
%sk_Clockwise = OpVariable %_ptr_Input_bool Input
%_ptr_Input_v4float = OpTypePointer Input %v4float
%src = OpVariable %_ptr_Input_v4float Input
%dst = OpVariable %_ptr_Input_v4float Input
%void = OpTypeVoid
%14 = OpTypeFunction %void
%float_1 = OpConstant %float 1
%main = OpFunction %void None %14
%15 = OpLabel
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
%16 = OpLoad %v4float %src
Enable SPIR-V disassembly output from skslc. We now have SPIR-V golden outputs for `blend` and `shared` tests. This exposes a handful of SPIR-V limitations for us to address. Change-Id: Ie5278889b8a61432403d06231b17765885bee0ac Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337182 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
2020-11-20 21:28:50 +00:00
%18 = OpLoad %v4float %src
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
%19 = OpCompositeExtract %float %18 3
%20 = OpFSub %float %float_1 %19
%21 = OpLoad %v4float %dst
%22 = OpVectorTimesScalar %v4float %21 %20
%23 = OpFAdd %v4float %16 %22
OpStore %sk_FragColor %23
Enable SPIR-V disassembly output from skslc. We now have SPIR-V golden outputs for `blend` and `shared` tests. This exposes a handful of SPIR-V limitations for us to address. Change-Id: Ie5278889b8a61432403d06231b17765885bee0ac Bug: skia:10694 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/337182 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
2020-11-20 21:28:50 +00:00
OpReturn
OpFunctionEnd
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