Add a GM to test the fix in 73200

Bug: skia:
Change-Id: I6a34138b699a96f51a0cacb049125f7bff9d5b84
Reviewed-on: https://skia-review.googlesource.com/77820
Commit-Queue: Yuqian Li <liyuqian@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/gm/bitmapshader.cpp b/gm/bitmapshader.cpp
index 5ee7fca694..98205d2146 100644
--- a/gm/bitmapshader.cpp
+++ b/gm/bitmapshader.cpp
@@ -10,6 +10,7 @@
 #include "SkBitmap.h"
 #include "SkPaint.h"
 #include "SkShader.h"
+#include "GrContext.h"
 
 namespace skiagm {
 
@@ -105,6 +106,34 @@ private:
     typedef GM INHERITED;
 };
 
+DEF_SIMPLE_GM(hugebitmapshader, canvas, 100, 100) {
+    SkPaint paint;
+    SkBitmap bitmap;
+
+    // The huge height will exceed GL_MAX_TEXTURE_SIZE. We test that the GL backend will at least
+    // draw something with a default paint instead of drawing nothing.
+    //
+    // (See https://skia-review.googlesource.com/c/skia/+/73200)
+    int bitmapW = 1;
+    int bitmapH = 60000;
+    if (auto* ctx = canvas->getGrContext()) {
+        bitmapH = ctx->caps()->maxTextureSize() + 1;
+    }
+    bitmap.setInfo(SkImageInfo::MakeA8(bitmapW, bitmapH), bitmapW);
+    uint8_t* pixels = new uint8_t[bitmapH];
+    for(int i = 0; i < bitmapH; ++i) {
+        pixels[i] = i & 0xff;
+    }
+    bitmap.setPixels(pixels);
+
+    paint.setShader(SkShader::MakeBitmapShader(bitmap,
+             SkShader::kMirror_TileMode, SkShader::kMirror_TileMode));
+    paint.setColor(SK_ColorRED);
+    paint.setAntiAlias(true);
+    canvas->drawCircle(50, 50, 50, paint);
+    delete [] pixels;
+}
+
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new BitmapShaderGM; }