diff --git a/examples/09-hdr/hdr.cpp b/examples/09-hdr/hdr.cpp
index 77d4e6e3..dd141e7c 100644
--- a/examples/09-hdr/hdr.cpp
+++ b/examples/09-hdr/hdr.cpp
@@ -363,7 +363,7 @@ class HDR : public entry::AppI
 			// Set views.
 			for (uint32_t ii = 0; ii < 6; ++ii)
 			{
-				bgfx::setViewRect(ii, 0, 0, m_width, m_height);
+				bgfx::setViewRect(ii, 0, 0, bgfx::BackbufferRatio::Equal);
 			}
 			bgfx::setViewFrameBuffer(0, m_fbh);
 			bgfx::setViewFrameBuffer(1, m_fbh);
@@ -384,13 +384,13 @@ class HDR : public entry::AppI
 			bgfx::setViewRect(6, 0, 0, 1, 1);
 			bgfx::setViewFrameBuffer(6, m_lum[4]);
 
-			bgfx::setViewRect(7, 0, 0, m_width/2, m_height/2);
+			bgfx::setViewRect(7, 0, 0, bgfx::BackbufferRatio::Half);
 			bgfx::setViewFrameBuffer(7, m_bright);
 
-			bgfx::setViewRect(8, 0, 0, m_width/8, m_height/8);
+			bgfx::setViewRect(8, 0, 0, bgfx::BackbufferRatio::Eighth);
 			bgfx::setViewFrameBuffer(8, m_blur);
 
-			bgfx::setViewRect(9, 0, 0, m_width, m_height);
+			bgfx::setViewRect(9, 0, 0, bgfx::BackbufferRatio::Equal);
 
 			float view[16];
 			float proj[16];
diff --git a/include/bgfx/bgfx.h b/include/bgfx/bgfx.h
index 6eb57abb..06a117ad 100644
--- a/include/bgfx/bgfx.h
+++ b/include/bgfx/bgfx.h
@@ -1569,6 +1569,9 @@ namespace bgfx
 	///
 	void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height);
 
+	///
+	void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, BackbufferRatio::Enum _ratio);
+
 	/// Set view scissor. Draw primitive outside view will be clipped. When
 	/// _x, _y, _width and _height are set to 0, scissor will be disabled.
 	///
diff --git a/src/bgfx.cpp b/src/bgfx.cpp
index f3989bae..a5fc1d56 100644
--- a/src/bgfx.cpp
+++ b/src/bgfx.cpp
@@ -1320,6 +1320,7 @@ namespace bgfx
 	{
 		freeDynamicBuffers();
 		m_submit->m_resolution = m_resolution;
+		m_resolution.m_flags &= ~BGFX_RESET_FORCE;
 		m_submit->m_debug = m_debug;
 
 		memcpy(m_submit->m_viewRemap, m_viewRemap, sizeof(m_viewRemap) );
@@ -3034,6 +3035,17 @@ again:
 		s_ctx->setViewRect(_id, _x, _y, _width, _height);
 	}
 
+	void setViewRect(uint8_t _id, uint16_t _x, uint16_t _y, BackbufferRatio::Enum _ratio)
+	{
+		BGFX_CHECK_MAIN_THREAD();
+		BX_CHECK(checkView(_id), "Invalid view id: %d", _id);
+
+		uint16_t width  = uint16_t(s_ctx->m_resolution.m_width);
+		uint16_t height = uint16_t(s_ctx->m_resolution.m_height);
+		getTextureSizeFromRatio(_ratio, width, height);
+		setViewRect(_id, _x, _y, width, height);
+	}
+
 	void setViewScissor(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height)
 	{
 		BGFX_CHECK_MAIN_THREAD();
diff --git a/src/bgfx_p.h b/src/bgfx_p.h
index 5c2834c2..066e0269 100644
--- a/src/bgfx_p.h
+++ b/src/bgfx_p.h
@@ -174,6 +174,7 @@ namespace stl
 #define BGFX_MAX_COMPUTE_BINDINGS 8
 
 #define BGFX_SAMPLER_DEFAULT_FLAGS UINT32_C(0x10000000)
+#define BGFX_RESET_FORCE           UINT32_C(0x80000000)
 
 #define BGFX_RENDERER_DIRECT3D9_NAME  "Direct3D 9"
 #define BGFX_RENDERER_DIRECT3D11_NAME "Direct3D 11"
@@ -2036,6 +2037,7 @@ namespace bgfx
 						, uint16_t(m_resolution.m_width)
 						, uint16_t(m_resolution.m_height)
 						);
+					m_resolution.m_flags |= BGFX_RESET_FORCE;
 				}
 			}
 		}
diff --git a/src/renderer_d3d11.cpp b/src/renderer_d3d11.cpp
index 760befa7..44a75590 100644
--- a/src/renderer_d3d11.cpp
+++ b/src/renderer_d3d11.cpp
@@ -56,6 +56,7 @@ namespace bgfx { namespace d3d11
 		ID3D11UnorderedAccessView* m_uav[D3D11_PS_CS_UAV_REGISTER_COUNT];
 		ID3D11ShaderResourceView*  m_srv[D3D11_COMMONSHADER_INPUT_RESOURCE_SLOT_COUNT];
 		ID3D11SamplerState*        m_sampler[D3D11_COMMONSHADER_SAMPLER_SLOT_COUNT];
+		ID3D11RenderTargetView*    m_rtv[BGFX_CONFIG_MAX_FRAME_BUFFERS];
 		uint32_t                   m_zero[D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT];
 		float                      m_zerof[D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT];
 	};
@@ -569,7 +570,6 @@ namespace bgfx { namespace d3d11
 			, m_captureTexture(NULL)
 			, m_captureResolve(NULL)
 			, m_wireframe(false)
-			, m_flags(BGFX_RESET_NONE)
 			, m_maxAnisotropy(1)
 			, m_currentProgram(NULL)
 			, m_vsChanges(0)
@@ -1967,12 +1967,12 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 				DX_CHECK(m_swapChain->GetBuffer(0, IID_ID3D11Texture2D, (void**)&color) );
 
 				D3D11_RENDER_TARGET_VIEW_DESC desc;
-				desc.ViewDimension = (m_flags & BGFX_RESET_MSAA_MASK)
+				desc.ViewDimension = (m_resolution.m_flags & BGFX_RESET_MSAA_MASK)
 					? D3D11_RTV_DIMENSION_TEXTURE2DMS
 					: D3D11_RTV_DIMENSION_TEXTURE2D
 					;
 				desc.Texture2D.MipSlice = 0;
-				desc.Format = (m_flags & BGFX_RESET_SRGB_BACKBUFFER)
+				desc.Format = (m_resolution.m_flags & BGFX_RESET_SRGB_BACKBUFFER)
 					? DXGI_FORMAT_R8G8B8A8_UNORM_SRGB
 					: DXGI_FORMAT_R8G8B8A8_UNORM
 					;
@@ -2036,7 +2036,7 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 				HRESULT hr = S_OK;
 				uint32_t syncInterval = BX_ENABLED(BX_PLATFORM_WINRT)
 					? 1 // sync interval of 0 is not supported on WinRT
-					: !!(m_flags & BGFX_RESET_VSYNC)
+					: !!(m_resolution.m_flags & BGFX_RESET_VSYNC)
 					;
 
 				for (uint32_t ii = 1, num = m_numWindows; ii < num && SUCCEEDED(hr); ++ii)
@@ -2129,15 +2129,16 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 
 			uint32_t flags = _resolution.m_flags & ~(BGFX_RESET_HMD_RECENTER | BGFX_RESET_MAXANISOTROPY);
 
-			if ( getBufferWidth()  != _resolution.m_width
-			||   getBufferHeight() != _resolution.m_height
-			||   m_flags != flags)
+			if ( getBufferWidth()     != _resolution.m_width
+			||   getBufferHeight()    != _resolution.m_height
+			||   m_resolution.m_flags != flags)
 			{
+				flags &= ~BGFX_RESET_FORCE;
+
 				bool resize = true
 					&& !BX_ENABLED(BX_PLATFORM_WINRT) // can't use ResizeBuffers on Windows Phone
-					&& (m_flags&BGFX_RESET_MSAA_MASK) == (flags&BGFX_RESET_MSAA_MASK)
+					&& (m_resolution.m_flags&BGFX_RESET_MSAA_MASK) == (flags&BGFX_RESET_MSAA_MASK)
 					;
-				m_flags = flags;
 
 				m_textVideoMem.resize(false, _resolution.m_width, _resolution.m_height);
 				m_textVideoMem.clear();
@@ -2159,6 +2160,7 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 				{
 					if (resize)
 					{
+						m_deviceCtx->OMSetRenderTargets(1, s_zero.m_rtv, NULL);
 						DX_CHECK(m_swapChain->ResizeBuffers(2
 							, getBufferWidth()
 							, getBufferHeight()
@@ -2169,13 +2171,13 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 					else
 					{
 						updateMsaa();
-						m_scd.SampleDesc = s_msaa[(m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
+						m_scd.SampleDesc = s_msaa[(m_resolution.m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
 
 						DX_RELEASE(m_swapChain, 0);
 
 						SwapChainDesc* scd = &m_scd;
 						SwapChainDesc swapChainScd;
-						if (0 != (m_flags & BGFX_RESET_HMD)
+						if (0 != (m_resolution.m_flags & BGFX_RESET_HMD)
 						&&  m_ovr.isInitialized() )
 						{
 							swapChainScd = m_scd;
@@ -2948,7 +2950,7 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 
 		void capturePostReset()
 		{
-			if (m_flags&BGFX_RESET_CAPTURE)
+			if (m_resolution.m_flags&BGFX_RESET_CAPTURE)
 			{
 				ID3D11Texture2D* backBuffer;
 				DX_CHECK(m_swapChain->GetBuffer(0, IID_ID3D11Texture2D, (void**)&backBuffer) );
@@ -3287,7 +3289,6 @@ BX_PRAGMA_DIAGNOSTIC_POP();
 #endif // BX_PLATFORM_WINRT
 
 		SwapChainDesc m_scd;
-		uint32_t m_flags;
 		uint32_t m_maxAnisotropy;
 
 		IndexBufferD3D11 m_indexBuffers[BGFX_CONFIG_MAX_INDEX_BUFFERS];
diff --git a/src/renderer_d3d12.cpp b/src/renderer_d3d12.cpp
index 5d194bba..a8def426 100644
--- a/src/renderer_d3d12.cpp
+++ b/src/renderer_d3d12.cpp
@@ -457,7 +457,6 @@ namespace bgfx { namespace d3d12
 	{
 		RendererContextD3D12()
 			: m_wireframe(false)
-			, m_flags(BGFX_RESET_NONE)
 			, m_maxAnisotropy(1)
 			, m_fsChanges(0)
 			, m_vsChanges(0)
@@ -1121,7 +1120,7 @@ namespace bgfx { namespace d3d12
 				int64_t start = bx::getHPCounter();
 
 				HRESULT hr = 0;
-				uint32_t syncInterval = !!(m_flags & BGFX_RESET_VSYNC);
+				uint32_t syncInterval = !!(m_resolution.m_flags & BGFX_RESET_VSYNC);
 				uint32_t flags = 0 == syncInterval ? DXGI_PRESENT_RESTART : 0;
 				for (uint32_t ii = 1, num = m_numWindows; ii < num && SUCCEEDED(hr); ++ii)
 				{
@@ -1643,17 +1642,17 @@ data.NumQualityLevels = 0;
 				m_maxAnisotropy = 1;
 			}
 
-			if ( (uint32_t)m_scd.BufferDesc.Width != _resolution.m_width
+			if ( (uint32_t)m_scd.BufferDesc.Width  != _resolution.m_width
 			||   (uint32_t)m_scd.BufferDesc.Height != _resolution.m_height
-			||   m_flags != _resolution.m_flags)
+			||   m_resolution.m_flags              != _resolution.m_flags)
 			{
-				bool resize = (m_flags&BGFX_RESET_MSAA_MASK) == (_resolution.m_flags&BGFX_RESET_MSAA_MASK);
-				m_flags = _resolution.m_flags;
+				bool resize = (m_resolution.m_flags&BGFX_RESET_MSAA_MASK) == (_resolution.m_flags&BGFX_RESET_MSAA_MASK);
 
 				m_textVideoMem.resize(false, _resolution.m_width, _resolution.m_height);
 				m_textVideoMem.clear();
 
 				m_resolution = _resolution;
+				m_resolution.m_flags &= ~BGFX_RESET_FORCE;
 				m_scd.BufferDesc.Width  = _resolution.m_width;
 				m_scd.BufferDesc.Height = _resolution.m_height;
 
@@ -1678,7 +1677,7 @@ data.NumQualityLevels = 0;
 				else
 				{
 					updateMsaa();
-					m_scd.SampleDesc = s_msaa[(m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
+					m_scd.SampleDesc = s_msaa[(m_resolution.m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
 
 					DX_RELEASE(m_swapChain, 0);
 
@@ -2537,7 +2536,6 @@ data.NumQualityLevels = 0;
 		bool m_wireframe;
 
 		DXGI_SWAP_CHAIN_DESC m_scd;
-		uint32_t m_flags;
 		uint32_t m_maxAnisotropy;
 
 		BufferD3D12 m_indexBuffers[BGFX_CONFIG_MAX_INDEX_BUFFERS];
diff --git a/src/renderer_d3d9.cpp b/src/renderer_d3d9.cpp
index d043090c..41b4e7d1 100644
--- a/src/renderer_d3d9.cpp
+++ b/src/renderer_d3d9.cpp
@@ -281,7 +281,6 @@ namespace bgfx { namespace d3d9
 			, m_captureTexture(NULL)
 			, m_captureSurface(NULL)
 			, m_captureResolve(NULL)
-			, m_flags(BGFX_RESET_NONE)
 			, m_maxAnisotropy(1)
 			, m_initialized(false)
 			, m_amd(false)
@@ -1176,9 +1175,11 @@ namespace bgfx { namespace d3d9
 
 			if (m_params.BackBufferWidth  != _resolution.m_width
 			||  m_params.BackBufferHeight != _resolution.m_height
-			||  m_flags != flags)
+			||  m_resolution.m_flags      != flags)
 			{
-				m_flags = flags;
+				flags &= ~BGFX_RESET_FORCE;
+
+				m_resolution.m_flags = flags;
 
 				m_textVideoMem.resize(false, _resolution.m_width, _resolution.m_height);
 				m_textVideoMem.clear();
@@ -1195,12 +1196,12 @@ namespace bgfx { namespace d3d9
 
 				m_params.BackBufferWidth  = _resolution.m_width;
 				m_params.BackBufferHeight = _resolution.m_height;
-				m_params.FullScreen_RefreshRateInHz = BGFX_RESET_FULLSCREEN == (m_flags&BGFX_RESET_FULLSCREEN_MASK) ? 60 : 0;
-				m_params.PresentationInterval = !!(m_flags&BGFX_RESET_VSYNC) ? D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE;
+				m_params.FullScreen_RefreshRateInHz = BGFX_RESET_FULLSCREEN == (m_resolution.m_flags&BGFX_RESET_FULLSCREEN_MASK) ? 60 : 0;
+				m_params.PresentationInterval = !!(m_resolution.m_flags&BGFX_RESET_VSYNC) ? D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE;
 
 				updateMsaa();
 
-				Msaa& msaa = s_msaa[(m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
+				Msaa& msaa = s_msaa[(m_resolution.m_flags&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT];
 				m_params.MultiSampleType    = msaa.m_type;
 				m_params.MultiSampleQuality = msaa.m_quality;
 
@@ -1231,7 +1232,7 @@ namespace bgfx { namespace d3d9
 				}
 				DX_CHECK(m_device->SetDepthStencilSurface(m_backBufferDepthStencil) );
 
-				DX_CHECK(m_device->SetRenderState(D3DRS_SRGBWRITEENABLE, 0 != (m_flags & BGFX_RESET_SRGB_BACKBUFFER) ) );
+				DX_CHECK(m_device->SetRenderState(D3DRS_SRGBWRITEENABLE, 0 != (m_resolution.m_flags & BGFX_RESET_SRGB_BACKBUFFER) ) );
 			}
 			else
 			{
@@ -1514,7 +1515,7 @@ namespace bgfx { namespace d3d9
 
 		void capturePostReset()
 		{
-			if (m_flags&BGFX_RESET_CAPTURE)
+			if (m_resolution.m_flags&BGFX_RESET_CAPTURE)
 			{
 				uint32_t width  = m_params.BackBufferWidth;
 				uint32_t height = m_params.BackBufferHeight;
@@ -1918,7 +1919,6 @@ namespace bgfx { namespace d3d9
 		uint32_t m_adapter;
 		D3DDEVTYPE m_deviceType;
 		D3DPRESENT_PARAMETERS m_params;
-		uint32_t m_flags;
 		uint32_t m_maxAnisotropy;
 		D3DADAPTER_IDENTIFIER9 m_identifier;
 		Resolution m_resolution;
diff --git a/src/renderer_gl.cpp b/src/renderer_gl.cpp
index db3a5d28..7d8201ad 100644
--- a/src/renderer_gl.cpp
+++ b/src/renderer_gl.cpp
@@ -2346,6 +2346,8 @@ namespace bgfx { namespace gl
 			||  m_resolution.m_height != _resolution.m_height
 			||  m_resolution.m_flags  != flags)
 			{
+				flags &= ~BGFX_RESET_FORCE;
+
 				m_textVideoMem.resize(false, _resolution.m_width, _resolution.m_height);
 				m_textVideoMem.clear();