commit e1182785beee0356d742a7c7e5af8fd8ef0bd1c4
author John Stiles <johnstiles@google.com> Tue Mar 30 22:09:37 2021 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Wed Mar 31 18:00:42 2021 +0000
tree 1a0bda50fbe86aa2a0314a3df67ab3fc66a6115f
parent 9f5ad49ec1040b993184dc3306fea974c4b1e23b

Create a diagonal-matrix Constructor class.

This constructor takes a single argument and splats it diagonally across
an otherwise-zero matrix. These are also sometimes referred to as a
uniform-scale matrix.

Change-Id: I1ed8140f55f5cad4029015807b220d6475401daa
Bug: skia:11032
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/390716
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>

src/sksl/SkSLInliner.cpp

diff --git a/src/sksl/SkSLInliner.cpp b/src/sksl/SkSLInliner.cpp
index 41c7972..7915776 100644
--- a/src/sksl/SkSLInliner.cpp
+++ b/src/sksl/SkSLInliner.cpp
@@ -17,6 +17,7 @@
 #include "src/sksl/ir/SkSLBoolLiteral.h"
 #include "src/sksl/ir/SkSLBreakStatement.h"
 #include "src/sksl/ir/SkSLConstructor.h"
+#include "src/sksl/ir/SkSLConstructorDiagonalMatrix.h"
 #include "src/sksl/ir/SkSLContinueStatement.h"
 #include "src/sksl/ir/SkSLDiscardStatement.h"
 #include "src/sksl/ir/SkSLDoStatement.h"
@@ -312,6 +313,12 @@
             SkASSERT(inlinedCtor);
             return inlinedCtor;
         }
+        case Expression::Kind::kConstructorDiagonalMatrix: {
+            const ConstructorDiagonalMatrix& ctor = expression.as<ConstructorDiagonalMatrix>();
+            return ConstructorDiagonalMatrix::Make(*fContext, offset,
+                                                   *ctor.type().clone(symbolTableForExpression),
+                                                   expr(ctor.argument()));
+        }
         case Expression::Kind::kExternalFunctionCall: {
             const ExternalFunctionCall& externalCall = expression.as<ExternalFunctionCall>();
             return std::make_unique<ExternalFunctionCall>(offset, &externalCall.function(),
@@ -913,6 +920,11 @@
                 }
                 break;
             }
+            case Expression::Kind::kConstructorDiagonalMatrix: {
+                ConstructorDiagonalMatrix& ctorExpr = (*expr)->as<ConstructorDiagonalMatrix>();
+                this->visitExpression(&ctorExpr.argument());
+                break;
+            }
             case Expression::Kind::kExternalFunctionCall: {
                 ExternalFunctionCall& funcCallExpr = (*expr)->as<ExternalFunctionCall>();
                 for (std::unique_ptr<Expression>& arg : funcCallExpr.arguments()) {