1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Copyright 2020 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_VMGENERATOR
#define SKSL_VMGENERATOR
#include "src/core/SkVM.h"
#include <cstddef>
template <typename T> class SkSpan;
namespace SkSL {
class FunctionDefinition;
struct Program;
class SkVMDebugTrace;
class SkVMCallbacks {
public:
virtual ~SkVMCallbacks() = default;
virtual skvm::Color sampleShader(int index, skvm::Coord coord) = 0;
virtual skvm::Color sampleColorFilter(int index, skvm::Color color) = 0;
virtual skvm::Color sampleBlender(int index, skvm::Color src, skvm::Color dst) = 0;
virtual skvm::Color toLinearSrgb(skvm::Color color) = 0;
virtual skvm::Color fromLinearSrgb(skvm::Color color) = 0;
};
// Convert 'function' to skvm instructions in 'builder', for use by blends, shaders, & color filters
skvm::Color ProgramToSkVM(const Program& program,
const FunctionDefinition& function,
skvm::Builder* builder,
SkVMDebugTrace* debugTrace,
SkSpan<skvm::Val> uniforms,
skvm::Coord device,
skvm::Coord local,
skvm::Color inputColor,
skvm::Color destColor,
SkVMCallbacks* callbacks);
struct SkVMSignature {
size_t fParameterSlots = 0;
size_t fReturnSlots = 0;
};
/*
* Converts 'function' to skvm instructions in 'builder'. Always adds one arg per value in the
* parameter list, then one per value in the return type. For example:
*
* float2 fn(float2 a, float b) { ... }
*
* ... is mapped so that it can be called as:
*
* p.eval(N, &a.x, &a.y, &b, &return.x, &return.y);
*
* The number of parameter and return slots (pointers) is placed in 'outSignature', if provided.
* If the program declares any uniforms, 'uniforms' should contain the IDs of each individual value
* (eg, one ID per component of a vector).
*/
bool ProgramToSkVM(const Program& program,
const FunctionDefinition& function,
skvm::Builder* b,
SkVMDebugTrace* debugTrace,
SkSpan<skvm::Val> uniforms,
SkVMSignature* outSignature = nullptr);
bool testingOnly_ProgramToSkVMShader(const Program& program,
skvm::Builder* builder,
SkVMDebugTrace* debugTrace);
} // namespace SkSL
#endif
|
