Added Surface type - as a simple value type to hold a 2d collection of pixels. (#548)

Added PngSerializeUtil allows currently for just writing Surface of RGBA format.
Removes dependency on stbi_image except for in PngSerializeUtil.
Removed use of gWindowWidth/Height globals - pass the height into initialize or Renderer.

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/render-test/png-serialize-util.h b/tools/render-test/png-serialize-util.h
new file mode 100644
index 000000000..fe3b4f873
--- /dev/null
+++ b/tools/render-test/png-serialize-util.h
@@ -0,0 +1,14 @@
+// png-serialize-util.h
+#pragma once
+
+#include "surface.h"
+    
+namespace renderer_test {
+
+struct PngSerializeUtil 
+{
+    static Slang::Result write(const char* filename, const Surface& surface);
+
+};
+
+} // renderer_test