You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
283 lines
8.8 KiB
283 lines
8.8 KiB
/*
|
|
* Copyright 2016 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#ifndef SKSL_LAYOUT
|
|
#define SKSL_LAYOUT
|
|
|
|
#include "include/private/SkSLString.h"
|
|
|
|
namespace SkSL {
|
|
|
|
/**
|
|
* Represents a layout block appearing before a variable declaration, as in:
|
|
*
|
|
* layout (location = 0) int x;
|
|
*/
|
|
struct Layout {
|
|
enum Flag {
|
|
kOriginUpperLeft_Flag = 1 << 0,
|
|
kOverrideCoverage_Flag = 1 << 1,
|
|
kPushConstant_Flag = 1 << 2,
|
|
kBlendSupportAllEquations_Flag = 1 << 3,
|
|
kTracked_Flag = 1 << 4,
|
|
kSRGBUnpremul_Flag = 1 << 5,
|
|
kKey_Flag = 1 << 6,
|
|
|
|
// These flags indicate if the qualifier appeared, regardless of the accompanying value.
|
|
kLocation_Flag = 1 << 7,
|
|
kOffset_Flag = 1 << 8,
|
|
kBinding_Flag = 1 << 9,
|
|
kIndex_Flag = 1 << 10,
|
|
kSet_Flag = 1 << 11,
|
|
kBuiltin_Flag = 1 << 12,
|
|
kInputAttachmentIndex_Flag = 1 << 13,
|
|
kPrimitive_Flag = 1 << 14,
|
|
kMaxVertices_Flag = 1 << 15,
|
|
kInvocations_Flag = 1 << 16,
|
|
kWhen_Flag = 1 << 17,
|
|
kCType_Flag = 1 << 18,
|
|
};
|
|
|
|
enum Primitive {
|
|
kUnspecified_Primitive = -1,
|
|
kPoints_Primitive,
|
|
kLines_Primitive,
|
|
kLineStrip_Primitive,
|
|
kLinesAdjacency_Primitive,
|
|
kTriangles_Primitive,
|
|
kTriangleStrip_Primitive,
|
|
kTrianglesAdjacency_Primitive
|
|
};
|
|
|
|
enum class CType {
|
|
kDefault,
|
|
kBool,
|
|
kFloat,
|
|
kFloat2,
|
|
kFloat3,
|
|
kFloat4,
|
|
kInt32,
|
|
kSkRect,
|
|
kSkIRect,
|
|
kSkPMColor4f,
|
|
kSkPMColor,
|
|
kSkV4,
|
|
kSkPoint,
|
|
kSkIPoint,
|
|
kSkMatrix,
|
|
kSkM44,
|
|
kGrSurfaceProxyView,
|
|
kGrFragmentProcessor,
|
|
};
|
|
|
|
static const char* CTypeToStr(CType ctype) {
|
|
switch (ctype) {
|
|
case CType::kDefault:
|
|
return nullptr;
|
|
case CType::kFloat:
|
|
return "float";
|
|
case CType::kInt32:
|
|
return "int32_t";
|
|
case CType::kSkRect:
|
|
return "SkRect";
|
|
case CType::kSkIRect:
|
|
return "SkIRect";
|
|
case CType::kSkPMColor4f:
|
|
return "SkPMColor4f";
|
|
case CType::kSkPMColor:
|
|
return "SkPMColor";
|
|
case CType::kSkV4:
|
|
return "SkV4";
|
|
case CType::kSkPoint:
|
|
return "SkPoint";
|
|
case CType::kSkIPoint:
|
|
return "SkIPoint";
|
|
case CType::kSkMatrix:
|
|
return "SkMatrix";
|
|
case CType::kSkM44:
|
|
return "SkM44";
|
|
case CType::kGrSurfaceProxyView:
|
|
return "GrSurfaceProxyView";
|
|
case CType::kGrFragmentProcessor:
|
|
return "std::unique_ptr<GrFragmentProcessor>";
|
|
default:
|
|
SkASSERT(false);
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
Layout(int flags, int location, int offset, int binding, int index, int set, int builtin,
|
|
int inputAttachmentIndex, Primitive primitive, int maxVertices, int invocations,
|
|
StringFragment when, CType ctype)
|
|
: fFlags(flags)
|
|
, fLocation(location)
|
|
, fOffset(offset)
|
|
, fBinding(binding)
|
|
, fIndex(index)
|
|
, fSet(set)
|
|
, fBuiltin(builtin)
|
|
, fInputAttachmentIndex(inputAttachmentIndex)
|
|
, fPrimitive(primitive)
|
|
, fMaxVertices(maxVertices)
|
|
, fInvocations(invocations)
|
|
, fWhen(when)
|
|
, fCType(ctype) {}
|
|
|
|
Layout()
|
|
: fFlags(0)
|
|
, fLocation(-1)
|
|
, fOffset(-1)
|
|
, fBinding(-1)
|
|
, fIndex(-1)
|
|
, fSet(-1)
|
|
, fBuiltin(-1)
|
|
, fInputAttachmentIndex(-1)
|
|
, fPrimitive(kUnspecified_Primitive)
|
|
, fMaxVertices(-1)
|
|
, fInvocations(-1)
|
|
, fCType(CType::kDefault) {}
|
|
|
|
static Layout builtin(int builtin) {
|
|
Layout result;
|
|
result.fBuiltin = builtin;
|
|
return result;
|
|
}
|
|
|
|
String description() const {
|
|
String result;
|
|
auto separator = [firstSeparator = true]() mutable -> String {
|
|
if (firstSeparator) {
|
|
firstSeparator = false;
|
|
return "";
|
|
} else {
|
|
return ", ";
|
|
}};
|
|
if (fLocation >= 0) {
|
|
result += separator() + "location = " + to_string(fLocation);
|
|
}
|
|
if (fOffset >= 0) {
|
|
result += separator() + "offset = " + to_string(fOffset);
|
|
}
|
|
if (fBinding >= 0) {
|
|
result += separator() + "binding = " + to_string(fBinding);
|
|
}
|
|
if (fIndex >= 0) {
|
|
result += separator() + "index = " + to_string(fIndex);
|
|
}
|
|
if (fSet >= 0) {
|
|
result += separator() + "set = " + to_string(fSet);
|
|
}
|
|
if (fBuiltin >= 0) {
|
|
result += separator() + "builtin = " + to_string(fBuiltin);
|
|
}
|
|
if (fInputAttachmentIndex >= 0) {
|
|
result += separator() + "input_attachment_index = " + to_string(fInputAttachmentIndex);
|
|
}
|
|
if (fFlags & kOriginUpperLeft_Flag) {
|
|
result += separator() + "origin_upper_left";
|
|
}
|
|
if (fFlags & kOverrideCoverage_Flag) {
|
|
result += separator() + "override_coverage";
|
|
}
|
|
if (fFlags & kBlendSupportAllEquations_Flag) {
|
|
result += separator() + "blend_support_all_equations";
|
|
}
|
|
if (fFlags & kPushConstant_Flag) {
|
|
result += separator() + "push_constant";
|
|
}
|
|
if (fFlags & kTracked_Flag) {
|
|
result += separator() + "tracked";
|
|
}
|
|
if (fFlags & kSRGBUnpremul_Flag) {
|
|
result += separator() + "srgb_unpremul";
|
|
}
|
|
switch (fPrimitive) {
|
|
case kPoints_Primitive:
|
|
result += separator() + "points";
|
|
break;
|
|
case kLines_Primitive:
|
|
result += separator() + "lines";
|
|
break;
|
|
case kLineStrip_Primitive:
|
|
result += separator() + "line_strip";
|
|
break;
|
|
case kLinesAdjacency_Primitive:
|
|
result += separator() + "lines_adjacency";
|
|
break;
|
|
case kTriangles_Primitive:
|
|
result += separator() + "triangles";
|
|
break;
|
|
case kTriangleStrip_Primitive:
|
|
result += separator() + "triangle_strip";
|
|
break;
|
|
case kTrianglesAdjacency_Primitive:
|
|
result += separator() + "triangles_adjacency";
|
|
break;
|
|
case kUnspecified_Primitive:
|
|
break;
|
|
}
|
|
if (fMaxVertices >= 0) {
|
|
result += separator() + "max_vertices = " + to_string(fMaxVertices);
|
|
}
|
|
if (fInvocations >= 0) {
|
|
result += separator() + "invocations = " + to_string(fInvocations);
|
|
}
|
|
if (fWhen.fLength) {
|
|
result += separator() + "when = " + fWhen;
|
|
}
|
|
if (result.size() > 0) {
|
|
result = "layout (" + result + ")";
|
|
}
|
|
if (fFlags & kKey_Flag) {
|
|
result += "/* key */ const";
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool operator==(const Layout& other) const {
|
|
return fFlags == other.fFlags &&
|
|
fLocation == other.fLocation &&
|
|
fOffset == other.fOffset &&
|
|
fBinding == other.fBinding &&
|
|
fIndex == other.fIndex &&
|
|
fSet == other.fSet &&
|
|
fBuiltin == other.fBuiltin &&
|
|
fInputAttachmentIndex == other.fInputAttachmentIndex &&
|
|
fPrimitive == other.fPrimitive &&
|
|
fMaxVertices == other.fMaxVertices &&
|
|
fInvocations == other.fInvocations &&
|
|
fWhen == other.fWhen &&
|
|
fCType == other.fCType;
|
|
}
|
|
|
|
bool operator!=(const Layout& other) const {
|
|
return !(*this == other);
|
|
}
|
|
|
|
int fFlags;
|
|
int fLocation;
|
|
int fOffset;
|
|
int fBinding;
|
|
int fIndex;
|
|
int fSet;
|
|
// builtin comes from SPIR-V and identifies which particular builtin value this object
|
|
// represents.
|
|
int fBuiltin;
|
|
// input_attachment_index comes from Vulkan/SPIR-V to connect a shader variable to the a
|
|
// corresponding attachment on the subpass in which the shader is being used.
|
|
int fInputAttachmentIndex;
|
|
Primitive fPrimitive;
|
|
int fMaxVertices;
|
|
int fInvocations;
|
|
StringFragment fWhen;
|
|
CType fCType;
|
|
};
|
|
|
|
} // namespace SkSL
|
|
|
|
#endif
|