Implement texture uploads from ImageBitmap with sub source.

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
index b0e2964258793aae49e26a5b08765d1102333868..739a23f6d51e9088cce1f3c2e4f8fee42a299ad5 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
@@ -1376,9 +1376,12 @@ void WebGL2RenderingContextBase::texImage2D(GLenum target,
                                             GLint border,
                                             GLenum format,
                                             GLenum type,
-                                            ImageBitmap* imageBitMap,
+                                            ImageBitmap* bitmap,
                                             ExceptionState& exceptionState) {
-  // TODO(zmo): To be implemented.
+  DCHECK(bitmap);
+  texImageHelperImageBitmap(
+      TexImage2D, target, level, internalformat, format, type, 0, 0, 0, bitmap,
+      getTextureSourceSubRectangle(width, height), 1, 0, exceptionState);
 }
 
 void WebGL2RenderingContextBase::texImage2D(GLenum target,
@@ -1534,7 +1537,11 @@ void WebGL2RenderingContextBase::texSubImage2D(GLenum target,
                                                GLenum type,
                                                ImageBitmap* bitmap,
                                                ExceptionState& exceptionState) {
-  // TODO(zmo): To be implemented.
+  DCHECK(bitmap);
+  texImageHelperImageBitmap(TexSubImage2D, target, level, 0, format, type,
+                            xoffset, yoffset, 0, bitmap,
+                            getTextureSourceSubRectangle(width, height), 1, 0,
+                            exceptionState);
 }
 
 void WebGL2RenderingContextBase::texSubImage2D(GLenum target,
@@ -1766,9 +1773,12 @@ void WebGL2RenderingContextBase::texImage3D(GLenum target,
                                             GLint border,
                                             GLenum format,
                                             GLenum type,
-                                            ImageBitmap* imageBitMap,
+                                            ImageBitmap* bitmap,
                                             ExceptionState& exceptionState) {
-  // TODO(zmo): To be implemented.
+  texImageHelperImageBitmap(TexImage3D, target, level, internalformat, format,
+                            type, 0, 0, 0, bitmap,
+                            getTextureSourceSubRectangle(width, height), depth,
+                            m_unpackImageHeight, exceptionState);
 }
 
 void WebGL2RenderingContextBase::texSubImage3D(GLenum target,
@@ -1832,12 +1842,10 @@ void WebGL2RenderingContextBase::texSubImage3D(GLenum target,
                                                GLenum type,
                                                ImageData* pixels) {
   DCHECK(pixels);
-  IntRect sourceImageRect;
-  sourceImageRect.setLocation(IntPoint(m_unpackSkipPixels, m_unpackSkipRows));
-  sourceImageRect.setSize(IntSize(width, height));
   texImageHelperImageData(TexSubImage3D, target, level, 0, 0, format, type,
                           depth, xoffset, yoffset, zoffset, pixels,
-                          sourceImageRect, m_unpackImageHeight);
+                          getTextureSourceSubRectangle(width, height),
+                          m_unpackImageHeight);
 }
 
 void WebGL2RenderingContextBase::texSubImage3D(GLenum target,
@@ -1906,20 +1914,10 @@ void WebGL2RenderingContextBase::texSubImage3D(GLenum target,
                                                GLenum type,
                                                ImageBitmap* bitmap,
                                                ExceptionState& exceptionState) {
-  // TODO(zmo): To be implemented.
-}
-
-void WebGL2RenderingContextBase::texSubImage3D(GLenum target,
-                                               GLint level,
-                                               GLint xoffset,
-                                               GLint yoffset,
-                                               GLint zoffset,
-                                               GLenum format,
-                                               GLenum type,
-                                               ImageBitmap* bitmap,
-                                               ExceptionState& exceptionState) {
   texImageHelperImageBitmap(TexSubImage3D, target, level, 0, format, type,
-                            xoffset, yoffset, zoffset, bitmap, exceptionState);
+                            xoffset, yoffset, zoffset, bitmap,
+                            getTextureSourceSubRectangle(width, height), depth,
+                            m_unpackImageHeight, exceptionState);
 }
 
 void WebGL2RenderingContextBase::copyTexSubImage3D(GLenum target,