e89d8ea20b
This was the last remaining user of ByteCode. The skvm solution is faster, and lets us delete the ByteCode system. Testing on 15 instances of sinusoidal_emitter (90k particles): - ByteCode ~9 ms - ByteCode (older, optimized): ~5.5 ms - skvm ~2.1 ms Change-Id: Ia2e5c9ab2d36c97e59af28a6f989bf212889e439 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356919 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* Copyright 2020 Google LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SKSL_VMGENERATOR
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#define SKSL_VMGENERATOR
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#include "src/core/SkSpan.h"
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#include "src/core/SkVM.h"
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#include "src/sksl/SkSLString.h"
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#include "src/sksl/ir/SkSLType.h"
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#include <functional>
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namespace SkSL {
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class FunctionDefinition;
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struct Program;
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using SampleChildFn = std::function<skvm::Color(int, skvm::Coord)>;
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// TODO: Have a generic entry point, supporting SkSpan<skvm::Val> for parameters and return values.
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// That would be useful for interpreter use cases like SkParticleEffect.
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// Convert 'function' to skvm instructions in 'builder', for use by shaders and color filters
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skvm::Color ProgramToSkVM(const Program& program,
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const FunctionDefinition& function,
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skvm::Builder* builder,
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SkSpan<skvm::Val> uniforms,
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skvm::Coord device,
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skvm::Coord local,
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SampleChildFn sampleChild);
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struct SkVMSignature {
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size_t fParameterSlots = 0;
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size_t fReturnSlots = 0;
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};
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/*
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* Converts 'function' to skvm instructions in 'builder'. Always adds one arg per value in the
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* parameter list, then one per value in the return type. For example:
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*
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* float2 fn(float2 a, float b) { ... }
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*
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* ... is mapped so that it can be called as:
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*
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* p.eval(N, &a.x, &a.y, &b, &return.x, &return.y);
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*
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* The number of parameter and return slots (pointers) is placed in 'outSignature', if provided.
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* If the program declares any uniforms, 'uniforms' should contain the IDs of each individual value
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* (eg, one ID per component of a vector).
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*/
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bool ProgramToSkVM(const Program& program,
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const FunctionDefinition& function,
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skvm::Builder* b,
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SkSpan<skvm::Val> uniforms,
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SkVMSignature* outSignature = nullptr);
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const FunctionDefinition* Program_GetFunction(const Program& program, const char* function);
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struct UniformInfo {
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struct Uniform {
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String fName;
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Type::NumberKind fKind;
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int fColumns;
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int fRows;
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int fSlot;
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};
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std::vector<Uniform> fUniforms;
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int fUniformSlotCount = 0;
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};
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std::unique_ptr<UniformInfo> Program_GetUniformInfo(const Program& program);
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bool testingOnly_ProgramToSkVMShader(const Program& program, skvm::Builder* builder);
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} // namespace SkSL
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#endif
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