diff --git a/include/bgfx/bgfx.h b/include/bgfx/bgfx.h
index 42d96161..22f46b34 100644
--- a/include/bgfx/bgfx.h
+++ b/include/bgfx/bgfx.h
@@ -1414,7 +1414,7 @@ namespace bgfx
 	///
 	/// @attention Texture must be created with `BGFX_TEXTURE_READ_BACK` flag.
 	/// @attention Availability depends on: `BGFX_CAPS_TEXTURE_READ_BACK`.
-	/// @attention C99 equivalent is `bgfx_read_texture`.
+	/// @attention C99 equivalent is `bgfx_read_frame_buffer`.
 	///
 	void readTexture(FrameBufferHandle _handle, uint8_t _attachment, void* _data);
 
@@ -1614,6 +1614,7 @@ namespace bgfx
 	///
 	void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
 
+    /// @attention C99 equivalent is `bgfx_set_view_rect_auto`.
 	///
 	void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, BackbufferRatio::Enum _ratio);
 
diff --git a/include/bgfx/c99/bgfx.h b/include/bgfx/c99/bgfx.h
index 07f2d4e0..c983bc58 100644
--- a/include/bgfx/c99/bgfx.h
+++ b/include/bgfx/c99/bgfx.h
@@ -758,6 +758,12 @@ BGFX_C_API void bgfx_update_texture_3d(bgfx_texture_handle_t _handle, uint8_t _m
 /**/
 BGFX_C_API void bgfx_update_texture_cube(bgfx_texture_handle_t _handle, uint8_t _side, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t* _mem, uint16_t _pitch);
 
+/**/
+BGFX_C_API void bgfx_read_texture(bgfx_texture_handle_t _handle, void* _data);
+
+/**/
+BGFX_C_API void bgfx_read_frame_buffer(bgfx_frame_buffer_handle_t _handle, uint8_t _attachment, void* _data);
+
 /**/
 BGFX_C_API void bgfx_destroy_texture(bgfx_texture_handle_t _handle);
 
@@ -800,6 +806,9 @@ BGFX_C_API void bgfx_set_view_name(uint8_t _id, const char* _name);
 /**/
 BGFX_C_API void bgfx_set_view_rect(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
 
+/**/
+BGFX_C_API void bgfx_set_view_rect_auto(uint8_t _id, uint16_t _x, uint16_t _y, bgfx_backbuffer_ratio_t _ratio);
+
 /**/
 BGFX_C_API void bgfx_set_view_scissor(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
 
@@ -824,6 +833,9 @@ BGFX_C_API void bgfx_set_view_transform_stereo(uint8_t _id, const void* _view, c
 /**/
 BGFX_C_API void bgfx_set_view_remap(uint8_t _id, uint8_t _num, const void* _remap);
 
+/**/
+BGFX_C_API void bgfx_reset_view(uint8_t _id);
+
 /**/
 BGFX_C_API void bgfx_set_marker(const char* _marker);
 
@@ -932,6 +944,9 @@ BGFX_C_API void bgfx_discard();
 /**/
 BGFX_C_API void bgfx_blit(uint8_t _id, bgfx_texture_handle_t _dst, uint8_t _dstMip, uint16_t _dstX, uint16_t _dstY, uint16_t _dstZ, bgfx_texture_handle_t _src, uint8_t _srcMip, uint16_t _srcX, uint16_t _srcY, uint16_t _srcZ, uint16_t _width, uint16_t _height, uint16_t _depth);
 
+/**/
+BGFX_C_API void bgfx_blit_frame_buffer(uint8_t _id, bgfx_texture_handle_t _dst, uint8_t _dstMip, uint16_t _dstX, uint16_t _dstY, uint16_t _dstZ, bgfx_frame_buffer_handle_t _src, uint8_t _attachment, uint8_t _srcMip, uint16_t _srcX, uint16_t _srcY, uint16_t _srcZ, uint16_t _width, uint16_t _height, uint16_t _depth);
+
 /**/
 BGFX_C_API void bgfx_save_screen_shot(const char* _filePath);
 
diff --git a/src/bgfx.cpp b/src/bgfx.cpp
index 549dfcce..6e72858a 100644
--- a/src/bgfx.cpp
+++ b/src/bgfx.cpp
@@ -3986,6 +3986,18 @@ BGFX_C_API void bgfx_update_texture_cube(bgfx_texture_handle_t _handle, uint8_t
 	bgfx::updateTextureCube(handle.cpp, _side, _mip, _x, _y, _width, _height, (const bgfx::Memory*)_mem, _pitch);
 }
 
+BGFX_C_API void bgfx_read_texture(bgfx_texture_handle_t _handle, void* _data)
+{
+	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle = { _handle };
+	bgfx::readTexture(handle.cpp, _data);
+}
+
+BGFX_C_API void bgfx_read_frame_buffer(bgfx_frame_buffer_handle_t _handle, uint8_t _attachment, void* _data)
+{
+	union { bgfx_frame_buffer_handle_t c; bgfx::FrameBufferHandle cpp; } handle = { _handle };
+	bgfx::readTexture(handle.cpp, _attachment, _data);
+}
+
 BGFX_C_API void bgfx_destroy_texture(bgfx_texture_handle_t _handle)
 {
 	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle = { _handle };
@@ -4073,6 +4085,11 @@ BGFX_C_API void bgfx_set_view_rect(uint8_t _id, uint16_t _x, uint16_t _y, uint16
 	bgfx::setViewRect(_id, _x, _y, _width, _height);
 }
 
+BGFX_C_API void bgfx_set_view_rect_auto(uint8_t _id, uint16_t _x, uint16_t _y, bgfx_backbuffer_ratio_t _ratio)
+{
+	bgfx::setViewRect(_id, _x, _y, bgfx::BackbufferRatio::Enum(_ratio));
+}
+
 BGFX_C_API void bgfx_set_view_scissor(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height)
 {
 	bgfx::setViewScissor(_id, _x, _y, _width, _height);
@@ -4330,6 +4347,13 @@ BGFX_C_API void bgfx_blit(uint8_t _id, bgfx_texture_handle_t _dst, uint8_t _dstM
 	bgfx::blit(_id, dst.cpp, _dstMip, _dstX, _dstY, _dstZ, src.cpp, _srcMip, _srcX, _srcY, _srcZ, _width, _height, _depth);
 }
 
+BGFX_C_API void bgfx_blit_frame_buffer(uint8_t _id, bgfx_texture_handle_t _dst, uint8_t _dstMip, uint16_t _dstX, uint16_t _dstY, uint16_t _dstZ, bgfx_frame_buffer_handle_t _src, uint8_t _attachment, uint8_t _srcMip, uint16_t _srcX, uint16_t _srcY, uint16_t _srcZ, uint16_t _width, uint16_t _height, uint16_t _depth)
+{
+	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } dst = { _dst };
+	union { bgfx_frame_buffer_handle_t c; bgfx::FrameBufferHandle cpp; } src = { _src };
+	bgfx::blit(_id, dst.cpp, _dstMip, _dstX, _dstY, _dstZ, src.cpp, _attachment, _srcMip, _srcX, _srcY, _srcZ, _width, _height, _depth);
+}
+
 BGFX_C_API void bgfx_save_screen_shot(const char* _filePath)
 {
 	bgfx::saveScreenShot(_filePath);