diff --git a/README.md b/README.md
index b1a129c2..90a69016 100644
--- a/README.md
+++ b/README.md
@@ -135,6 +135,9 @@ Loading textures.
 Implementing application specific callbacks for taking screen shots, caching
 OpenGL binary shaders, and video capture.
 
+### 08-update
+Updating textures.
+
 Internals
 ---------
 
diff --git a/examples/06-bump/bump.cpp b/examples/06-bump/bump.cpp
index cc8be850..0cd8ef86 100644
--- a/examples/06-bump/bump.cpp
+++ b/examples/06-bump/bump.cpp
@@ -338,11 +338,11 @@ int _main_(int _argc, char** _argv)
 
 	// Load diffuse texture.
 	mem = loadTexture("fieldstone-rgba.dds");
-	bgfx::TextureHandle texture_rgba = bgfx::createTexture(mem);
+	bgfx::TextureHandle textureColor = bgfx::createTexture(mem);
 
 	// Load normal texture.
 	mem = loadTexture("fieldstone-n.dds");
-	bgfx::TextureHandle texture_n = bgfx::createTexture(mem);
+	bgfx::TextureHandle textureNormal = bgfx::createTexture(mem);
 
 	while (true)
 	{
@@ -437,8 +437,8 @@ int _main_(int _argc, char** _argv)
 			bgfx::setInstanceDataBuffer(idb, numInstances);
 
 			// Bind textures.
-			bgfx::setTexture(0, u_texColor, texture_rgba);
-			bgfx::setTexture(1, u_texNormal, texture_n);
+			bgfx::setTexture(0, u_texColor, textureColor);
+			bgfx::setTexture(1, u_texNormal, textureNormal);
 
 			// Set render states.
 			bgfx::setState(BGFX_STATE_RGB_WRITE
@@ -459,8 +459,8 @@ int _main_(int _argc, char** _argv)
 	bgfx::destroyIndexBuffer(ibh);
 	bgfx::destroyVertexBuffer(vbh);
 	bgfx::destroyProgram(program);
-	bgfx::destroyTexture(texture_rgba);
-	bgfx::destroyTexture(texture_n);
+	bgfx::destroyTexture(textureColor);
+	bgfx::destroyTexture(textureNormal);
 	bgfx::destroyUniform(u_texColor);
 	bgfx::destroyUniform(u_texNormal);
 
diff --git a/examples/08-update/fs_update.sc b/examples/08-update/fs_update.sc
new file mode 100644
index 00000000..6af633c5
--- /dev/null
+++ b/examples/08-update/fs_update.sc
@@ -0,0 +1,15 @@
+$input v_texcoord0
+
+/*
+ * Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "../common/common.sh"
+
+SAMPLERCUBE(u_texCube, 0);
+
+void main()
+{
+	gl_FragColor = textureCube(u_texCube, v_texcoord0);
+}
diff --git a/examples/08-update/makefile b/examples/08-update/makefile
new file mode 100644
index 00000000..3bb2f87f
--- /dev/null
+++ b/examples/08-update/makefile
@@ -0,0 +1,17 @@
+#
+# Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+# License: http://www.opensource.org/licenses/BSD-2-Clause
+#
+
+BGFX_DIR=../..
+RUNTIME_DIR=$(BGFX_DIR)/examples/runtime
+BUILD_DIR=../../.build
+
+include $(BGFX_DIR)/premake/shader.mk
+
+rebuild:
+	@make -s --no-print-directory TARGET=0 clean all
+	@make -s --no-print-directory TARGET=1 clean all
+	@make -s --no-print-directory TARGET=2 clean all
+	@make -s --no-print-directory TARGET=3 clean all
+	@make -s --no-print-directory TARGET=4 clean all
diff --git a/examples/08-update/update.cpp b/examples/08-update/update.cpp
new file mode 100644
index 00000000..146f5b94
--- /dev/null
+++ b/examples/08-update/update.cpp
@@ -0,0 +1,336 @@
+/*
+ * Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include <bgfx.h>
+#include <bx/bx.h>
+#include <bx/timer.h>
+#include "../common/dbg.h"
+#include "../common/math.h"
+
+#include <stdio.h>
+#include <string.h>
+
+struct PosColorVertex
+{
+	float m_x;
+	float m_y;
+	float m_z;
+	float m_u;
+	float m_v;
+	float m_w;
+};
+
+static bgfx::VertexDecl s_PosTexcoordDecl;
+
+static PosColorVertex s_cubeVertices[24] =
+{
+	{-1.0f,  1.0f,  1.0f, -1.0f,  1.0f,  1.0f },
+	{ 1.0f,  1.0f,  1.0f,  1.0f,  1.0f,  1.0f },
+	{-1.0f, -1.0f,  1.0f, -1.0f, -1.0f,  1.0f },
+	{ 1.0f, -1.0f,  1.0f,  1.0f, -1.0f,  1.0f },
+
+	{-1.0f,  1.0f, -1.0f, -1.0f,  1.0f, -1.0f },
+	{ 1.0f,  1.0f, -1.0f,  1.0f,  1.0f, -1.0f },
+	{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
+	{ 1.0f, -1.0f, -1.0f,  1.0f, -1.0f, -1.0f },
+
+	{-1.0f,  1.0f,  1.0f, -1.0f,  1.0f,  1.0f },
+	{-1.0f,  1.0f, -1.0f, -1.0f,  1.0f, -1.0f },
+	{-1.0f, -1.0f,  1.0f, -1.0f, -1.0f,  1.0f },
+	{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
+
+	{ 1.0f,  1.0f,  1.0f,  1.0f,  1.0f,  1.0f },
+	{ 1.0f, -1.0f,  1.0f,  1.0f, -1.0f,  1.0f },
+	{ 1.0f,  1.0f, -1.0f,  1.0f,  1.0f, -1.0f },
+	{ 1.0f, -1.0f, -1.0f,  1.0f, -1.0f, -1.0f },
+
+	{-1.0f,  1.0f,  1.0f, -1.0f,  1.0f,  1.0f },
+	{ 1.0f,  1.0f,  1.0f,  1.0f,  1.0f,  1.0f },
+	{-1.0f,  1.0f, -1.0f, -1.0f,  1.0f, -1.0f },
+	{ 1.0f,  1.0f, -1.0f,  1.0f,  1.0f, -1.0f },
+
+	{-1.0f, -1.0f,  1.0f, -1.0f, -1.0f,  1.0f },
+	{-1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f },
+	{ 1.0f, -1.0f,  1.0f,  1.0f, -1.0f,  1.0f },
+	{ 1.0f, -1.0f, -1.0f,  1.0f, -1.0f, -1.0f },
+};
+
+static const uint16_t s_cubeIndices[36] =
+{
+	 0,  2,  1, // 0
+	 1,  2,  3,
+
+	 4,  5,  6, // 2
+	 5,  7,  6,
+
+	 8,  9, 10, // 4
+	 9, 11, 10,
+
+	12, 13, 14, // 6
+	14, 13, 15, 
+
+	16, 17, 18, // 8
+	18, 17, 19,
+
+	20, 21, 22, // 10
+	21, 23, 22,
+};
+
+static const char* s_shaderPath = NULL;
+
+static void shaderFilePath(char* _out, const char* _name)
+{
+	strcpy(_out, s_shaderPath);
+	strcat(_out, _name);
+	strcat(_out, ".bin");
+}
+
+long int fsize(FILE* _file)
+{
+	long int pos = ftell(_file);
+	fseek(_file, 0L, SEEK_END);
+	long int size = ftell(_file);
+	fseek(_file, pos, SEEK_SET);
+	return size;
+}
+
+static const bgfx::Memory* load(const char* _filePath)
+{
+	FILE* file = fopen(_filePath, "rb");
+	if (NULL != file)
+	{
+		uint32_t size = (uint32_t)fsize(file);
+		const bgfx::Memory* mem = bgfx::alloc(size+1);
+		size_t ignore = fread(mem->data, 1, size, file);
+		BX_UNUSED(ignore);
+		fclose(file);
+		mem->data[mem->size-1] = '\0';
+		return mem;
+	}
+
+	return NULL;
+}
+
+static const bgfx::Memory* loadShader(const char* _name)
+{
+	char filePath[512];
+	shaderFilePath(filePath, _name);
+	return load(filePath);
+}
+
+int _main_(int _argc, char** _argv)
+{
+	bgfx::init();
+	bgfx::reset(1280, 720);
+
+	// Enable debug text.
+	bgfx::setDebug(BGFX_DEBUG_TEXT);
+
+	// Set view 0 default viewport.
+	bgfx::setViewRect(0, 0, 0, 1280, 720);
+
+	// Set view 0 clear state.
+	bgfx::setViewClear(0
+		, BGFX_CLEAR_COLOR_BIT|BGFX_CLEAR_DEPTH_BIT
+		, 0x303030ff
+		, 1.0f
+		, 0
+		);
+
+	// Setup root path for binary shaders. Shader binaries are different 
+	// for each renderer.
+	switch (bgfx::getRendererType() )
+	{
+	default:
+	case bgfx::RendererType::Direct3D9:
+		s_shaderPath = "shaders/dx9/";
+		break;
+
+	case bgfx::RendererType::Direct3D11:
+		s_shaderPath = "shaders/dx11/";
+		break;
+
+	case bgfx::RendererType::OpenGL:
+		s_shaderPath = "shaders/glsl/";
+		break;
+
+	case bgfx::RendererType::OpenGLES2:
+	case bgfx::RendererType::OpenGLES3:
+		s_shaderPath = "shaders/gles/";
+		break;
+	}
+
+	// Create vertex stream declaration.
+	s_PosTexcoordDecl.begin();
+	s_PosTexcoordDecl.add(bgfx::Attrib::Position, 3, bgfx::AttribType::Float);
+	s_PosTexcoordDecl.add(bgfx::Attrib::TexCoord0, 3, bgfx::AttribType::Float);
+	s_PosTexcoordDecl.end();
+
+	const bgfx::Memory* mem;
+
+	// Create static vertex buffer.
+	mem = bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) );
+	bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(mem, s_PosTexcoordDecl);
+
+	// Create static index buffer.
+	mem = bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) );
+	bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(mem);
+
+	// Create texture sampler uniforms.
+	bgfx::UniformHandle u_texCube = bgfx::createUniform("u_texCube", bgfx::UniformType::Uniform1iv);
+
+	// Load vertex shader.
+	mem = loadShader("vs_update");
+	bgfx::VertexShaderHandle vsh = bgfx::createVertexShader(mem);
+
+	// Load fragment shader.
+	mem = loadShader("fs_update");
+	bgfx::FragmentShaderHandle fsh = bgfx::createFragmentShader(mem);
+
+	// Create program from shaders.
+	bgfx::ProgramHandle program = bgfx::createProgram(vsh, fsh);
+
+	// We can destroy vertex and fragment shader here since
+	// their reference is kept inside bgfx after calling createProgram.
+	// Vertex and fragment shader will be destroyed once program is
+	// destroyed.
+	bgfx::destroyVertexShader(vsh);
+	bgfx::destroyFragmentShader(fsh);
+
+	uint32_t blockSide = 0;
+	uint32_t blockX = 0;
+	uint32_t blockY = 0;
+	const uint32_t blockWidth = 8;
+	const uint32_t blockHeight = 8;
+	const uint32_t textureSide = 256;
+
+	bgfx::TextureHandle textureCube = 
+		bgfx::createTextureCube(6
+			, textureSide
+			, 1
+			, bgfx::TextureFormat::BGRA8
+			, BGFX_TEXTURE_MIN_POINT|BGFX_TEXTURE_MAG_POINT|BGFX_TEXTURE_MIP_POINT
+			);
+
+	bgfx::TextureInfo ti;
+	bgfx::calcTextureSize(ti, blockWidth, blockHeight, 1, 1, bgfx::TextureFormat::BGRA8);
+
+	uint8_t rr = rand()%255;
+	uint8_t gg = rand()%255;
+	uint8_t bb = rand()%255;
+
+	int64_t updateTime = 0;
+
+	while (true)
+	{
+		// This dummy draw call is here to make sure that view 0 is cleared
+		// if no other draw calls are submitted to view 0.
+		bgfx::submit(0);
+
+		int64_t now = bx::getHPCounter();
+		static int64_t last = now;
+		const int64_t frameTime = now - last;
+		last = now;
+		const int64_t freq = bx::getHPFrequency();
+		const double toMs = 1000.0/double(freq);
+
+		// Use debug font to print information about this example.
+		bgfx::dbgTextClear();
+		bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/08-update");
+		bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Updating textures.");
+		bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
+
+		if (now > updateTime)
+		{
+//			updateTime = now + freq/100;
+			const bgfx::Memory* mem = bgfx::alloc(ti.storageSize);
+			uint8_t* data = (uint8_t*)mem->data;
+			for (uint32_t ii = 0, num = ti.storageSize*8/ti.bitsPerPixel; ii < num; ++ii)
+			{
+				data[0] = bb;
+				data[1] = rr;
+				data[2] = gg;
+				data[3] = 0xff;
+				data += 4;
+			}
+
+			bgfx::updateTextureCube(textureCube, blockSide, 0, blockX, blockY, blockWidth, blockHeight, mem);
+
+			blockX += 8;
+			if (blockX > textureSide-1)
+			{
+				blockX = 0;
+				blockY += 8;
+
+				if (blockY > textureSide-1)
+				{
+					rr = rand()%255;
+					gg = rand()%255;
+					bb = rand()%255;
+
+					blockY = 0;
+					++blockSide;
+
+					if (blockSide > 5)
+					{
+						blockSide = 0;
+					}
+				}
+			}
+		}
+
+		float at[3] = { 0.0f, 0.0f, 0.0f };
+		float eye[3] = { 0.0f, 0.0f, -5.0f };
+		
+		float view[16];
+		float proj[16];
+		mtxLookAt(view, eye, at);
+		mtxProj(proj, 60.0f, 16.0f/9.0f, 0.1f, 100.0f);
+
+		// Set view and projection matrix for view 0.
+		bgfx::setViewTransform(0, view, proj);
+
+		float time = (float)(bx::getHPCounter()/double(bx::getHPFrequency() ) );
+
+		float mtx[16];
+		mtxRotateXY(mtx, time, time*0.37f);
+
+		// Set model matrix for rendering.
+		bgfx::setTransform(mtx);
+
+		// Set vertex and fragment shaders.
+		bgfx::setProgram(program);
+
+		// Set vertex and index buffer.
+		bgfx::setVertexBuffer(vbh);
+		bgfx::setIndexBuffer(ibh);
+
+		// Bind texture.
+		bgfx::setTexture(0, u_texCube, textureCube);
+
+		// Set render states.
+		bgfx::setState(BGFX_STATE_RGB_WRITE
+			|BGFX_STATE_DEPTH_WRITE
+			|BGFX_STATE_DEPTH_TEST_LESS
+			);
+
+		// Submit primitive for rendering to view 0.
+		bgfx::submit(0);
+
+		// Advance to next frame. Rendering thread will be kicked to 
+		// process submitted rendering primitives.
+		bgfx::frame();
+	}
+
+	// Cleanup.
+	bgfx::destroyIndexBuffer(ibh);
+	bgfx::destroyVertexBuffer(vbh);
+	bgfx::destroyProgram(program);
+
+	// Shutdown bgfx.
+	bgfx::shutdown();
+
+	return 0;
+}
diff --git a/examples/08-update/varying.def.sc b/examples/08-update/varying.def.sc
new file mode 100644
index 00000000..73b1866c
--- /dev/null
+++ b/examples/08-update/varying.def.sc
@@ -0,0 +1,4 @@
+vec3 v_texcoord0    : TEXCOORD0 = vec3(9.0, 0.0, 0.0);
+
+vec3 a_position  : POSITION;
+vec3 a_texcoord0 : TEXCOORD0;
diff --git a/examples/08-update/vs_update.sc b/examples/08-update/vs_update.sc
new file mode 100644
index 00000000..fa425fcb
--- /dev/null
+++ b/examples/08-update/vs_update.sc
@@ -0,0 +1,15 @@
+$input a_position, a_texcoord0
+$output v_texcoord0
+
+/*
+ * Copyright 2011-2012 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#include "../common/common.sh"
+
+void main()
+{
+	gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
+	v_texcoord0 = a_texcoord0;
+}
diff --git a/examples/runtime/shaders/dx11/fs_update.bin b/examples/runtime/shaders/dx11/fs_update.bin
new file mode 100644
index 00000000..27e8a824
Binary files /dev/null and b/examples/runtime/shaders/dx11/fs_update.bin differ
diff --git a/examples/runtime/shaders/dx11/vs_update.bin b/examples/runtime/shaders/dx11/vs_update.bin
new file mode 100644
index 00000000..f631afad
Binary files /dev/null and b/examples/runtime/shaders/dx11/vs_update.bin differ
diff --git a/examples/runtime/shaders/dx9/fs_update.bin b/examples/runtime/shaders/dx9/fs_update.bin
new file mode 100644
index 00000000..ca4d6423
Binary files /dev/null and b/examples/runtime/shaders/dx9/fs_update.bin differ
diff --git a/examples/runtime/shaders/dx9/vs_update.bin b/examples/runtime/shaders/dx9/vs_update.bin
new file mode 100644
index 00000000..6565a4a1
Binary files /dev/null and b/examples/runtime/shaders/dx9/vs_update.bin differ
diff --git a/examples/runtime/shaders/gles/fs_update.bin b/examples/runtime/shaders/gles/fs_update.bin
new file mode 100644
index 00000000..880d148e
Binary files /dev/null and b/examples/runtime/shaders/gles/fs_update.bin differ
diff --git a/examples/runtime/shaders/gles/vs_update.bin b/examples/runtime/shaders/gles/vs_update.bin
new file mode 100644
index 00000000..ffd89389
Binary files /dev/null and b/examples/runtime/shaders/gles/vs_update.bin differ
diff --git a/examples/runtime/shaders/glsl/fs_update.bin b/examples/runtime/shaders/glsl/fs_update.bin
new file mode 100644
index 00000000..a3158b1a
Binary files /dev/null and b/examples/runtime/shaders/glsl/fs_update.bin differ
diff --git a/examples/runtime/shaders/glsl/vs_update.bin b/examples/runtime/shaders/glsl/vs_update.bin
new file mode 100644
index 00000000..1e175a1e
Binary files /dev/null and b/examples/runtime/shaders/glsl/vs_update.bin differ
diff --git a/include/bgfx.h b/include/bgfx.h
index 44deafe9..69f4bf74 100644
--- a/include/bgfx.h
+++ b/include/bgfx.h
@@ -630,6 +630,7 @@ namespace bgfx
 	void updateTexture3D(TextureHandle _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const Memory* _mem);
 
 	/// Update Cube texture.
+	/// @param _side Cubemap side, where 0 is +X, 1 is -X, 2 is +Y, 3 is -Y, 4 is +Z, and 5 is -Z.
 	void updateTextureCube(TextureHandle _handle, uint8_t _side, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const Memory* _mem);
 
 	/// Destroy texture.
diff --git a/premake/example-08-update.lua b/premake/example-08-update.lua
new file mode 100644
index 00000000..52a9d78f
--- /dev/null
+++ b/premake/example-08-update.lua
@@ -0,0 +1,39 @@
+project "example-08-update"
+	uuid "e011e246-5862-11e2-b202-b7cb257a7926"
+	kind "WindowedApp"
+
+	debugdir (BGFX_DIR .. "examples/runtime/")
+
+	includedirs {
+		BX_DIR .. "include",
+		BGFX_DIR .. "include",
+	}
+
+	files {
+		BGFX_DIR .. "examples/common/**.cpp",
+		BGFX_DIR .. "examples/common/**.h",
+		BGFX_DIR .. "examples/08-update/**.cpp",
+		BGFX_DIR .. "examples/08-update/**.h",
+	}
+
+	links {
+		"bgfx",
+	}
+
+	configuration { "emscripten" }
+		targetextension ".bc"
+
+	configuration { "nacl" }
+		targetextension ".nexe"
+
+	configuration { "nacl", "Release" }
+		postbuildcommands {
+			"@echo Stripping symbols.",
+			"@$(NACL)/bin/x86_64-nacl-strip -s \"$(TARGET)\""
+		}
+
+	configuration { "linux" }
+		links {
+			"GL",
+			"pthread",
+		}
diff --git a/premake/premake4.lua b/premake/premake4.lua
index 5f58faec..655d2842 100644
--- a/premake/premake4.lua
+++ b/premake/premake4.lua
@@ -41,3 +41,4 @@ dofile "example-04-mesh.lua"
 dofile "example-05-instancing.lua"
 dofile "example-06-bump.lua"
 dofile "example-07-callback.lua"
+dofile "example-08-update.lua"
diff --git a/src/bgfx.cpp b/src/bgfx.cpp
index 20a6d63e..9f6b4fd8 100644
--- a/src/bgfx.cpp
+++ b/src/bgfx.cpp
@@ -921,6 +921,11 @@ namespace bgfx
 
 	void calcTextureSize(TextureInfo& _info, uint16_t _width, uint16_t _height, uint16_t _depth, uint8_t _numMips, TextureFormat::Enum _format)
 	{
+		_width = uint32_max(1, _width);
+		_height = uint32_max(1, _height);
+		_depth = uint32_max(1, _depth);
+		_numMips = uint32_max(1, _numMips);
+
 		uint32_t width = _width;
 		uint32_t height = _height;
 		uint32_t depth = _depth;
@@ -985,6 +990,7 @@ namespace bgfx
 		tc.m_flags = _flags;
 		tc.m_width = _width;
 		tc.m_height = _height;
+		tc.m_sides = 0;
 		tc.m_depth = 0;
 		tc.m_numMips = _numMips;
 		tc.m_format = uint8_t(_format);
@@ -1023,6 +1029,7 @@ namespace bgfx
 		tc.m_flags = _flags;
 		tc.m_width = _width;
 		tc.m_height = _height;
+		tc.m_sides = 0;
 		tc.m_depth = _depth;
 		tc.m_numMips = _numMips;
 		tc.m_format = uint8_t(_format);
@@ -1060,6 +1067,7 @@ namespace bgfx
 		TextureCreate tc;
 		tc.m_flags = _flags;
 		tc.m_width = _width;
+		tc.m_height = _width;
 		tc.m_sides = _sides;
 		tc.m_depth = 0;
 		tc.m_numMips = _numMips;
diff --git a/src/bgfx_p.h b/src/bgfx_p.h
index 62785b97..d7ee4e57 100644
--- a/src/bgfx_p.h
+++ b/src/bgfx_p.h
@@ -164,11 +164,8 @@ namespace bgfx
 	{
 		uint32_t m_flags;
 		uint16_t m_width;
-		union
-		{
-			uint16_t m_height;
-			uint16_t m_sides;
-		};
+		uint16_t m_height;
+		uint16_t m_sides;
 		uint16_t m_depth;
 		uint8_t m_numMips;
 		uint8_t m_format;
diff --git a/src/renderer_d3d11.cpp b/src/renderer_d3d11.cpp
index 97309507..3d859ed0 100644
--- a/src/renderer_d3d11.cpp
+++ b/src/renderer_d3d11.cpp
@@ -1645,7 +1645,7 @@ namespace bgfx
 			, ...
 			);
 #else
-		deviceCtx->UpdateSubresource(m_ptr, subres, &box, _mem->data, _rect.m_width, 0); 
+		deviceCtx->UpdateSubresource(m_ptr, subres, &box, _mem->data, _rect.m_width*4, 0); 
 #endif // 0
 	}
 
diff --git a/src/renderer_d3d9.cpp b/src/renderer_d3d9.cpp
index adce237c..9be473ff 100644
--- a/src/renderer_d3d9.cpp
+++ b/src/renderer_d3d9.cpp
@@ -1291,11 +1291,25 @@ namespace bgfx
 
 		case TextureCube:
 			{
-				D3DLOCKED_RECT rect;
-				DX_CHECK(m_textureCube->LockRect(D3DCUBEMAP_FACES(_side), _lod, &rect, NULL, 0) );
-				_pitch = rect.Pitch;
+				D3DLOCKED_RECT lockedRect;
+
+				if (NULL != _rect)
+				{
+					RECT rect;
+					rect.left = _rect->m_x;
+					rect.top = _rect->m_y;
+					rect.right = rect.left + _rect->m_width;
+					rect.bottom = rect.top + _rect->m_height;
+					DX_CHECK(m_textureCube->LockRect(D3DCUBEMAP_FACES(_side), _lod, &lockedRect, &rect, 0) );
+				}
+				else
+				{
+					DX_CHECK(m_textureCube->LockRect(D3DCUBEMAP_FACES(_side), _lod, &lockedRect, NULL, 0) );
+				}
+
+				_pitch = lockedRect.Pitch;
 				_slicePitch = 0;
-				return (uint8_t*)rect.pBits;
+				return (uint8_t*)lockedRect.pBits;
 			}
 		}
 
@@ -1343,6 +1357,7 @@ namespace bgfx
 
 		if (parseDds(dds, _mem) )
 		{
+			m_format = dds.m_type;
 			const TextureFormatInfo& tfi = s_textureFormat[dds.m_type];
 
 			bool decompress = false;
@@ -1448,6 +1463,7 @@ namespace bgfx
 			{
 				TextureCreate tc;
 				bx::read(&reader, tc);
+				m_format = (TextureFormat::Enum)tc.m_format;
 
 				if (tc.m_cubeMap)
 				{
@@ -1507,9 +1523,9 @@ namespace bgfx
 	{
 		uint32_t pitch;
 		uint32_t slicePitch;
-		uint8_t* bits = lock(0, _mip, pitch, slicePitch, &_rect);
+		uint8_t* bits = lock(_side, _mip, pitch, slicePitch, &_rect);
 
-		uint32_t srcpitch = _rect.m_width;
+		uint32_t srcpitch = _rect.m_width*s_textureFormat[m_format].m_bpp/8;
 		uint32_t dstpitch = pitch;
 		for (uint32_t yy = 0, height = _rect.m_height; yy < height; ++yy)
 		{
@@ -1518,7 +1534,7 @@ namespace bgfx
 			memcpy(dst, src, srcpitch);
 		}
 
-		unlock(0, _mip);
+		unlock(_side, _mip);
 	}
 
 	void Texture::commit(uint8_t _stage)
diff --git a/src/renderer_d3d9.h b/src/renderer_d3d9.h
index e7a26e97..6eeaf33d 100644
--- a/src/renderer_d3d9.h
+++ b/src/renderer_d3d9.h
@@ -345,6 +345,7 @@ namespace bgfx
 		D3DTEXTUREADDRESS m_tau;
 		D3DTEXTUREADDRESS m_tav;
 		D3DTEXTUREADDRESS m_taw;
+		TextureFormat::Enum m_format;
 		Enum m_type;
 		bool m_srgb;
 	};