Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | |
| 9 | #include "GrShaderVar.h" |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 10 | #include "GrShaderCaps.h" |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 11 | |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 12 | static const char* type_modifier_string(GrShaderVar::TypeModifier t) { |
| 13 | switch (t) { |
| 14 | case GrShaderVar::kNone_TypeModifier: return ""; |
| 15 | case GrShaderVar::kIn_TypeModifier: return "in"; |
| 16 | case GrShaderVar::kInOut_TypeModifier: return "inout"; |
| 17 | case GrShaderVar::kOut_TypeModifier: return "out"; |
| 18 | case GrShaderVar::kUniform_TypeModifier: return "uniform"; |
| 19 | } |
Ben Wagner | b4aab9a | 2017-08-16 10:53:04 -0400 | [diff] [blame] | 20 | SK_ABORT("Unknown shader variable type modifier."); |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 21 | return ""; |
| 22 | } |
| 23 | |
| 24 | void GrShaderVar::setImageStorageFormat(GrImageStorageFormat format) { |
| 25 | const char* formatStr = nullptr; |
| 26 | switch (format) { |
| 27 | case GrImageStorageFormat::kRGBA8: |
| 28 | formatStr = "rgba8"; |
| 29 | break; |
| 30 | case GrImageStorageFormat::kRGBA8i: |
| 31 | formatStr = "rgba8i"; |
| 32 | break; |
| 33 | case GrImageStorageFormat::kRGBA16f: |
| 34 | formatStr = "rgba16f"; |
| 35 | break; |
| 36 | case GrImageStorageFormat::kRGBA32f: |
| 37 | formatStr = "rgba32f"; |
| 38 | break; |
| 39 | } |
| 40 | this->addLayoutQualifier(formatStr); |
| 41 | SkASSERT(formatStr); |
| 42 | } |
| 43 | |
| 44 | void GrShaderVar::setMemoryModel(GrSLMemoryModel model) { |
| 45 | switch (model) { |
| 46 | case GrSLMemoryModel::kNone: |
| 47 | return; |
| 48 | case GrSLMemoryModel::kCoherent: |
| 49 | this->addModifier("coherent"); |
| 50 | return; |
| 51 | case GrSLMemoryModel::kVolatile: |
| 52 | this->addModifier("volatile"); |
| 53 | return; |
| 54 | } |
Ben Wagner | b4aab9a | 2017-08-16 10:53:04 -0400 | [diff] [blame] | 55 | SK_ABORT("Unknown memory model."); |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | void GrShaderVar::setRestrict(GrSLRestrict restrict) { |
| 59 | switch (restrict) { |
| 60 | case GrSLRestrict::kNo: |
| 61 | return; |
| 62 | case GrSLRestrict::kYes: |
| 63 | this->addModifier("restrict"); |
| 64 | return; |
| 65 | } |
Ben Wagner | b4aab9a | 2017-08-16 10:53:04 -0400 | [diff] [blame] | 66 | SK_ABORT("Unknown restrict."); |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | void GrShaderVar::setIOType(GrIOType ioType) { |
| 70 | switch (ioType) { |
| 71 | case kRW_GrIOType: |
| 72 | return; |
| 73 | case kRead_GrIOType: |
| 74 | this->addModifier("readonly"); |
| 75 | return; |
| 76 | case kWrite_GrIOType: |
| 77 | this->addModifier("writeonly"); |
| 78 | return; |
| 79 | } |
Ben Wagner | b4aab9a | 2017-08-16 10:53:04 -0400 | [diff] [blame] | 80 | SK_ABORT("Unknown io type."); |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 81 | } |
| 82 | |
Brian Salomon | 1edc5b9 | 2016-11-29 13:43:46 -0500 | [diff] [blame] | 83 | void GrShaderVar::appendDecl(const GrShaderCaps* shaderCaps, SkString* out) const { |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 84 | SkASSERT(kDefault_GrSLPrecision == fPrecision || GrSLTypeTemporarilyAcceptsPrecision(fType)); |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 85 | SkString layout = fLayoutQualifier; |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 86 | if (!fLayoutQualifier.isEmpty()) { |
| 87 | out->appendf("layout(%s) ", fLayoutQualifier.c_str()); |
| 88 | } |
| 89 | out->append(fExtraModifiers); |
| 90 | if (this->getTypeModifier() != kNone_TypeModifier) { |
Brian Salomon | f9f4512 | 2016-11-29 11:59:17 -0500 | [diff] [blame] | 91 | out->append(type_modifier_string(this->getTypeModifier())); |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 92 | out->append(" "); |
| 93 | } |
| 94 | GrSLType effectiveType = this->getType(); |
Brian Salomon | 1edc5b9 | 2016-11-29 13:43:46 -0500 | [diff] [blame] | 95 | if (shaderCaps->usesPrecisionModifiers() && GrSLTypeAcceptsPrecision(effectiveType)) { |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 96 | // Desktop GLSL has added precision qualifiers but they don't do anything. |
| 97 | out->appendf("%s ", GrGLSLPrecisionString(fPrecision)); |
| 98 | } |
| 99 | if (this->isArray()) { |
| 100 | if (this->isUnsizedArray()) { |
| 101 | out->appendf("%s %s[]", |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 102 | GrGLSLTypeString(shaderCaps, effectiveType), |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 103 | this->getName().c_str()); |
| 104 | } else { |
| 105 | SkASSERT(this->getArrayCount() > 0); |
| 106 | out->appendf("%s %s[%d]", |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 107 | GrGLSLTypeString(shaderCaps, effectiveType), |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 108 | this->getName().c_str(), |
| 109 | this->getArrayCount()); |
| 110 | } |
| 111 | } else { |
| 112 | out->appendf("%s %s", |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 113 | GrGLSLTypeString(shaderCaps, effectiveType), |
Brian Salomon | 99938a8 | 2016-11-21 13:41:08 -0500 | [diff] [blame] | 114 | this->getName().c_str()); |
| 115 | } |
| 116 | } |