| /* |
| * 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, |
| kPushConstant_Flag = 1 << 1, |
| kBlendSupportAllEquations_Flag = 1 << 2, |
| kSRGBUnpremul_Flag = 1 << 3, |
| kKey_Flag = 1 << 4, |
| |
| // These flags indicate if the qualifier appeared, regardless of the accompanying value. |
| kLocation_Flag = 1 << 5, |
| kOffset_Flag = 1 << 6, |
| kBinding_Flag = 1 << 7, |
| kIndex_Flag = 1 << 8, |
| kSet_Flag = 1 << 9, |
| kBuiltin_Flag = 1 << 10, |
| kInputAttachmentIndex_Flag = 1 << 11, |
| kPrimitive_Flag = 1 << 12, |
| kMaxVertices_Flag = 1 << 13, |
| kInvocations_Flag = 1 << 14, |
| kWhen_Flag = 1 << 15, |
| kCType_Flag = 1 << 16, |
| }; |
| |
| enum Primitive { |
| kUnspecified_Primitive = -1, |
| kPoints_Primitive, |
| kLines_Primitive, |
| kLineStrip_Primitive, |
| kLinesAdjacency_Primitive, |
| kTriangles_Primitive, |
| kTriangleStrip_Primitive, |
| kTrianglesAdjacency_Primitive |
| }; |
| |
| enum class CType { |
| kDefault, // Default for: |
| kFloat, // float, half |
| kInt32, // int, short |
| kSkRect, // float4, half4 |
| kSkIRect, // int4, short4 |
| kSkPMColor4f, |
| kSkV4, |
| kSkPoint, // float2, half2 |
| kSkIPoint, // int2, short2 |
| kSkMatrix, // float3x3, half3x3 |
| kSkM44, // float4x4, half4x4 |
| kGrFragmentProcessor, // fragmentProcessor |
| }; |
| |
| 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::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::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 & kBlendSupportAllEquations_Flag) { |
| result += separator() + "blend_support_all_equations"; |
| } |
| if (fFlags & kPushConstant_Flag) { |
| result += separator() + "push_constant"; |
| } |
| 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.length()) { |
| 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 |
