1 files changed, 57 insertions, 0 deletions
diff --git a/tools/gpucts/gm_knowledge.h b/tools/gpucts/gm_knowledge.h
new file mode 100644
index 0000000000..d9d71e05c5
--- /dev/null
+++ b/tools/gpucts/gm_knowledge.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef gm_knowledge_DEFINED
+#define gm_knowledge_DEFINED
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/**
+A structure representing an image.  pix should either be nullptr (representing
+a missing image) or point to a block of memory width*height in size.
+
+Each pixel is an un-pre-multiplied RGBA color:
+    void set_color(GMK_ImageData* data, int x, int y,
+                   unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
+        data->pix[x + data->width * y] = (r << 0) | (g << 8) | (b << 16) | (a << 24);
+    }
+ */
+typedef struct {
+    const uint32_t* pix;
+    int width;
+    int height;
+} GMK_ImageData;
+
+/**
+Check if the given test image matches the expected results.
+
+@param data     the image
+@param gm_name  the name of the rendering test that produced the image
+
+@return 0 if the test passes, otherwise a positive number representing how
+         badly it failed.
+ */
+float GMK_Check(GMK_ImageData data, const char* gm_name);
+
+/**
+Check to see if the given test has expected results.
+
+@param gm_name  the name of a rendering test.
+
+@return true of expected results are known for the given test.
+*/
+bool GMK_IsGoodGM(const char* gm_name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // gm_knowledge_DEFINED