Add a test to show a case where patterns draw incorrectly.
The rendering currently shows a black square. It should have gray
pattern.
BUG=pdfium:1161
Change-Id: I0b22549020907913a0a274e793923a4f906ec24c
Reviewed-on: https://pdfium-review.googlesource.com/c/50870
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/testing/resources/pixel/bug_1161.in b/testing/resources/pixel/bug_1161.in
new file mode 100644
index 0000000..1f02ab5
--- /dev/null
+++ b/testing/resources/pixel/bug_1161.in
@@ -0,0 +1,83 @@
+{{header}}
+{{object 1 0}} <<
+ /Type /Catalog
+ /Pages 3 0 R
+>>
+endobj
+{{object 3 0}} <<
+ /Type /Pages
+ /Kids [4 0 R]
+ /Count 1
+>>
+endobj
+{{object 4 0}} <<
+ /Type /Page
+ /Resources <<
+ /XObject << /X0 6 0 R >>
+ >>
+ /Parent 3 0 R
+ /Contents [5 0 R]
+ /MediaBox [0 0 400 400]
+>>
+endobj
+{{object 5 0}} <<
+{{streamlen}}
+>>
+stream
+q 1 0 0 1 50 50 cm /X0 Do Q
+endstream
+endobj
+{{object 6 0}} <<
+ /Type /XObject
+ /FormType 1
+ /Subtype /Form
+ /Resources <<
+ /ExtGState << /GS 7 0 R >>
+ /Pattern << /PAT 8 0 R >>
+ >>
+ /BBox [0 0 300 300]
+ {{streamlen}}
+>>
+stream
+/GS gs 0 0 0 RG 1 w
+/Pattern cs /PAT scn
+0 0 m
+200 0 l
+200 200 l
+0 200 l b
+endstream
+endobj
+{{object 7 0}} <<
+/Type /ExtGState
+/ca 0.2
+/CA 1
+>>
+endobj
+{{object 8 0}} <<
+/Type /Pattern
+/TilingType 1
+/PatternType 1
+/BBox [0 0 18 18]
+/PaintType 1
+/YStep 18
+/XStep 18
+{{streamlen}}
+>>
+stream
+0 0 0 rg
+0 0 18 18 re
+f 0 0 0 RG
+1 w
+3 -0.5 m
+3.25 -0.5 3.5 -0.25 3.5 0 c
+3.5 0.25 3.25 0.5 3 0.5 c
+2.75 0.5 2.5 0.25 2.5 0 c
+2.5 -0.25 2.75 -0.5 3 -0.5 c h
+0 0 0 rg
+f
+endstream
+endobj
+{{xref}}
+{{trailer}}
+{{startxref}}
+%%EOF
diff --git a/testing/resources/pixel/bug_1161_expected.pdf.0.png b/testing/resources/pixel/bug_1161_expected.pdf.0.png
new file mode 100644
index 0000000..f54d0ec
--- /dev/null
+++ b/testing/resources/pixel/bug_1161_expected.pdf.0.png
Binary files differ
