Implement tex{Sub}Image{2|3}D with ArrayBufferView sub source.

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 876 matching lines @@
     // Helper function to check input width and height for functions {copy, compressed}Tex{Sub}Image.
     // Generates GL error and returns false if width or height is invalid.
     bool validateTexFuncDimensions(const char* functionName, TexImageFunctionType, GLenum target, GLint level, GLsizei width, GLsizei height, GLsizei depth);
 
     // Helper function to check input parameters for functions {copy}Tex{Sub}Image.
     // Generates GL error and returns false if parameters are invalid.
     bool validateTexFuncParameters(const char* functionName, TexImageFunctionType, GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type);
 
     enum NullDisposition {
         NullAllowed,
-        NullNotAllowed
+        NullNotAllowed,
+        NullNotReachable
     };
 
     // Helper function to validate that the given ArrayBufferView
     // is of the correct type and contains enough data for the texImage call.
     // Generates GL error and returns false if parameters are invalid.
-    bool validateTexFuncData(const char* functionName, TexImageDimension, GLint level, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, DOMArrayBufferView* pixels, NullDisposition);
+    bool validateTexFuncData(const char* functionName, TexImageDimension, GLint level, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, DOMArrayBufferView* pixels, NullDisposition, GLuint srcOffset);
 
     // Helper function to validate a given texture format is settable as in
     // you can supply data to texImage2D, or call texImage2D, copyTexImage2D and
     // copyTexSubImage2D.
     // Generates GL error and returns false if the format is not settable.
     bool validateSettableTexFormat(const char* functionName, GLenum format);
 
     // Helper function to validate format for CopyTexImage.
     bool validateCopyTexFormat(const char* functionName, GLenum format);
 
@@ skipping 181 matching lines @@
     static void willDestroyContext(WebGLRenderingContextBase*);
     static void forciblyLoseOldestContext(const String& reason);
     // Return the least recently used context's position in the active context vector.
     // If the vector is empty, return the maximum allowed active context number.
     static WebGLRenderingContextBase* oldestContext();
     static WebGLRenderingContextBase* oldestEvictedContext();
 
     ImageBitmap* transferToImageBitmapBase();
 
     // Helper functions for tex(Sub)Image2D && texSubImage3D
-    void texImageHelperDOMArrayBufferView(TexImageFunctionID, GLenum, GLint, GLint, GLsizei, GLsizei, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, DOMArrayBufferView*);
+    void texImageHelperDOMArrayBufferView(TexImageFunctionID, GLenum, GLint, GLint, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, GLint, GLint, GLint, DOMArrayBufferView*, NullDisposition, GLuint srcOffset);
     void texImageHelperImageData(TexImageFunctionID, GLenum, GLint, GLint, GLint, GLenum, GLenum, GLsizei, GLint, GLint, GLint, ImageData*);
     void texImageHelperHTMLImageElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLImageElement*, ExceptionState&);
     void texImageHelperHTMLCanvasElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLCanvasElement*, ExceptionState&);
     void texImageHelperHTMLVideoElement(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, HTMLVideoElement*, ExceptionState&);
     void texImageHelperImageBitmap(TexImageFunctionID, GLenum, GLint, GLint, GLenum, GLenum, GLint, GLint, GLint, ImageBitmap*, ExceptionState&);
     static const char* getTexImageFunctionName(TexImageFunctionID);
 
 private:
     WebGLRenderingContextBase(HTMLCanvasElement*, OffscreenCanvas*, std::unique_ptr<WebGraphicsContext3DProvider>, const WebGLContextAttributes&, unsigned);
     static std::unique_ptr<WebGraphicsContext3DProvider> createContextProviderInternal(HTMLCanvasElement*, ScriptState*, WebGLContextAttributes, unsigned);
     void texImageCanvasByGPU(HTMLCanvasElement*, GLuint, GLenum, GLenum, GLint);
     void texImageBitmapByGPU(ImageBitmap*, GLuint, GLenum, GLenum, GLint, bool);
 
     const unsigned m_version;
 
     bool isPaintable() const final { return drawingBuffer(); }
 };
 
 DEFINE_TYPE_CASTS(WebGLRenderingContextBase, CanvasRenderingContext, context, context->is3d(), context.is3d());
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::WebGLRenderingContextBase::TextureUnitState);
 
 #endif // WebGLRenderingContextBase_h