From 3666920fb71af152a07cd6c9d062f69ce091d2db Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sat, 8 Feb 2025 19:01:53 +0900
Subject: [PATCH] internal/shaderlister: bug fix: wrong shader hash

Updates #3157
---
 internal/shaderlister/main.go              |  2 +-
 internal/shaderlister/shaderlister_test.go | 16 +++++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/internal/shaderlister/main.go b/internal/shaderlister/main.go
index f60ba0bf4..02f7079cf 100644
--- a/internal/shaderlister/main.go
+++ b/internal/shaderlister/main.go
@@ -128,7 +128,7 @@ func xmain() error {
 
 		// Add source hashes.
 		for i := range shaders[origN:] {
-			shader := &shaders[i]
+			shader := &shaders[origN+i]
 			hash, err := graphics.CalcSourceHash([]byte(shader.Source))
 			if err != nil {
 				visitErr = err
diff --git a/internal/shaderlister/shaderlister_test.go b/internal/shaderlister/shaderlister_test.go
index 1e1480ff7..67065c134 100644
--- a/internal/shaderlister/shaderlister_test.go
+++ b/internal/shaderlister/shaderlister_test.go
@@ -22,6 +22,8 @@ import (
 	"slices"
 	"strings"
 	"testing"
+
+	"github.com/hajimehoshi/ebiten/v2/internal/graphics"
 )
 
 func hasGoCommand() bool {
@@ -46,9 +48,10 @@ func TestRun(t *testing.T) {
 	}
 
 	type shader struct {
-		Package string
-		File    string
-		Source  string
+		Package    string
+		File       string
+		Source     string
+		SourceHash string
 	}
 	var shaders []shader
 	if err := json.Unmarshal(out, &shaders); err != nil {
@@ -70,6 +73,13 @@ func TestRun(t *testing.T) {
 		if s.File == "" {
 			t.Errorf("s.File is empty: %v", s)
 		}
+		hash, err := graphics.CalcSourceHash([]byte(s.Source))
+		if err != nil {
+			t.Fatal(err)
+		}
+		if got, want := s.SourceHash, hash.String(); got != want {
+			t.Errorf("s.SourceHash: got: %q, want: %q", got, want)
+		}
 		if got, want := s.Source, fmt.Sprintf("shader %d", i+1); got != want {
 			t.Errorf("s.Source: got: %q, want: %q", got, want)
 		}