1 files changed, 15 insertions, 0 deletions
diff --git a/shared/OpenglCodecCommon/GLESTextureUtils.h b/shared/OpenglCodecCommon/GLESTextureUtils.h
index 906e5904..f623d23b 100644
--- a/shared/OpenglCodecCommon/GLESTextureUtils.h
+++ b/shared/OpenglCodecCommon/GLESTextureUtils.h
@@ -37,6 +37,21 @@ int computeNeededBufferSize(
         int unpackSkipRows,
         int unpackSkipImages);
 
+// Writes out |height| offsets for glReadPixels to read back
+// data in separate rows of pixels. Returns:
+// 1. |startOffset|: offset in bytes to apply at the beginning
+// 2. |packingPixelRowSize|: the buffer size in bytes that has the actual pixels per row.
+// 2. |packingTotalRowSize|: the length in bytes of each row including the padding from row length.
+void computePackingOffsets2D(
+        GLsizei width, GLsizei height,
+        GLenum format, GLenum type,
+        int packAlignment,
+        int packRowLength,
+        int packSkipPixels,
+        int packSkipRows,
+        int* startOffset,
+        int* packingPixelRowSize,
+        int* packingTotalRowSize);
 
 } // namespace GLESTextureUtils
 #endif