// ---------------------------------------------------------------
bool MyPVRDemo::InitView()
	{
	CPVRTString ErrorStr;

	LoadVBOs();
	bool bResult = true;
	bResult &= LoadTextures(&ErrorStr);
	bResult &= LoadShaders(&ErrorStr);
	bResult &= CreateFBOs(&ErrorStr);
	
	if(!bResult)
		{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
		}

	m_bRotated = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);

	// --- Set up light position, projection and view
	m_vLightPos   = PVRTVec3(0, 125, 200);
	m_mxLightProj = PVRTMat4::PerspectiveFovRH(PVRT_PI / 4, 1.0f, 10.0f, 1000.0f, PVRTMat4::OGL, m_bRotated);
	m_mxLightView = PVRTMat4::LookAtRH(m_vLightPos, PVRTVec3(0,25,0), PVRTVec3(0,1,0));
	m_mxLightBias = PVRTMat4(0.5f, 0.0f, 0.0f, 0.0f,
							 0.0f, 0.5f, 0.0f, 0.0f,
							 0.0f, 0.0f, 0.5f, 0.0f,
							 0.5f, 0.5f, 0.5f, 1.0f);

	// --- Set up Camera projection and view
	float fAspect = PVRShellGet(prefWidth) / (float)PVRShellGet(prefHeight);
	m_mxProjection = PVRTMat4::PerspectiveFovFloatDepthRH(0.75f, fAspect, 10.0f, PVRTMat4::OGL, m_bRotated);
	m_mxCam = PVRTMat4::LookAtRH(PVRTVec3(0, 55, 150), PVRTVec3(0, 35, 0), PVRTVec3(0, 1, 0));

	// --- Set GL states
	glCullFace(GL_BACK);
	glEnable(GL_CULL_FACE);
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_GEQUAL);
	glClearDepthf(0.0f);
	glClearColor(0,0,0,1);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

	return true;
	}

/*******************************************************************************
 * Function Name  : InitApplication
 * Inputs		  : argc, *argv[], uWidth, uHeight
 * Returns        : true if no error occured
 * Description    : Code in InitApplication() will be called by the Shell ONCE per
 *					run, early on in the execution of the program.
 *					Used to initialize variables that are not dependant on the
 *					rendering context (e.g. external modules, loading meshes, etc.)
 *******************************************************************************/
bool OGLESPolybump::InitApplication()
{
	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));

	// Load the scene
	if(m_Scene.ReadFromFile(c_szSceneFile) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	return true;
}

// ---------------------------------------------------------------
void MyPVRDemo::RenderShadowScene()
	{
	// --- Bind the shadow map FBO
	glBindFramebuffer(GL_FRAMEBUFFER, m_uiShadowMapFBO);
	glViewport(0, 0, SHADOW_MAP_SIZE, SHADOW_MAP_SIZE);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

	glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);			// Turn off colour writing

	glUseProgram(m_SimpleShader.uiID);
	// Create MVP using the light's matrix properties
	PVRTMat4 mxMVP = m_mxLightProj * m_mxLightView * PVRTMat4::Identity();
	glUniformMatrix4fv(m_SimpleShader.uiMVP, 1, GL_FALSE, mxMVP.ptr());
	DrawMesh(enumMODEL_Statue, FLAG_VRT);

	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);				// We can turn colour writing back on.

	glBindFramebuffer(GL_FRAMEBUFFER, m_nOrigFBO);		// Done. Use the original framebuffer.
	glViewport(0, 0, PVRShellGet(prefWidth), PVRShellGet(prefHeight));
	}

/*!****************************************************************************
 @Function		InitApplication
 @Return		bool		true if no error occured
 @Description	Code in InitApplication() will be called by PVRShell once per
				run, before the rendering context is created.
				Used to initialize variables that are not dependant on it
				(e.g. external modules, loading meshes, etc.)
				If the rendering context is lost, InitApplication() will
				not be called again.
******************************************************************************/
bool OGLESIntroducingPVRTools::InitApplication()
{
	/*
		CPVRTResourceFile is a resource file helper class. Resource files can
		be placed on disk next to the executable or in a platform dependent
		read path. We need to tell the class where that read path is.
		Additionally, it is possible to wrap files into cpp modules and
		link them directly into the executable. In this case no path will be
		used. Files on disk will override "memory files".
	*/

	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));
	return true;
}

/*!****************************************************************************
 @Function		InitView
 @Return		bool		true if no error occured
 @Description	Code in InitView() will be called by PVRShell upon
				initialization or after a change in the rendering context.
				Used to initialize variables that are dependent on the rendering
				context (e.g. textures, vertex buffers, etc.)
******************************************************************************/
bool OGLES2ProceduralTextures::InitView()
{
	CPVRTString ErrorStr;
	bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);

	if (!LoadShaders(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	// Initialize Print3D textures
	if (m_Print3D.SetTextures(NULL, PVRShellGet(prefWidth), PVRShellGet(prefHeight), bRotate) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "Error: Cannot initialise Print3D.\n");
		return false;
	}

	if (!m_pProceduralTextures->Init(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	if (!GenerateFnTexture())
	{
		PVRShellSet(prefExitMessage, "Error: Failed to generate texture.\n");
		return false;
	}

	glGenTextures(1, &m_ui32ColourSplineTexture);
	glBindTexture(GL_TEXTURE_2D, m_ui32ColourSplineTexture);
	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB, GL_UNSIGNED_BYTE, c_pszColourSplineData);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
	glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
	glBindTexture(GL_TEXTURE_2D, 0);

	return true;
}

/*!****************************************************************************
 @Function		InitApplication
 @Return		bool		true if no error occured
 @Description	Code in InitApplication() will be called by PVRShell once per
				run, before the rendering context is created.
				Used to initialize variables that are not dependant on it
				(e.g. external modules, loading meshes, etc.)
				If the rendering context is lost, InitApplication() will
				not be called again.
******************************************************************************/
bool OGLESIntroducingPFX::InitApplication()
{
	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));

	// Load the scene
	if (m_Scene.ReadFromFile(c_szSceneFile) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	// The cameras are stored in the file. We check it contains at least one.
	if(m_Scene.nNumCamera == 0)
	{
		PVRShellSet(prefExitMessage, "ERROR: The scene does not contain a camera\n");
		return false;
	}

	// Ensure that all meshes use an indexed triangle list
	for(unsigned int i = 0; i < m_Scene.nNumMesh; ++i)
	{
		if(m_Scene.pMesh[i].nNumStrips || !m_Scene.pMesh[i].sFaces.pData)
		{
			PVRShellSet(prefExitMessage, "ERROR: The meshes in the scene should use an indexed triangle list\n");
			return false;
		}
	}

	// Initialize variables used for the animation
	m_fFrame = 0;
	m_iTimePrev = PVRShellGetTime();

	return true;
}

/*!****************************************************************************
 @Function		InitView
 @Return		bool		true if no error occured
 @Description	Code in InitView() will be called by PVRShell upon
				initialization or after a change in the rendering context.
				Used to initialize variables that are dependant on the rendering
				context (e.g. textures, vertex buffers, etc.)
******************************************************************************/
bool OGLES2Coverflow::InitView()
{
	CPVRTString ErrorStr;

	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));
	
	if (!LoadTextures(&ErrorStr))
	{
        PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}
	
	if (!LoadShaders(&ErrorStr))
	{
        PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);

	if(m_Print3D.SetTextures(0,PVRShellGet(prefWidth),PVRShellGet(prefHeight), bRotate) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Cannot initialise Print3D\n");
		return false;
	}

	PVRTVECTOR3	vFrom = {0.0f, 0.0f, 15.0f },
		vTo = { 0, 0, 0 },
		vUp = { 0, 1, 0 };
	
	PVRTMatrixPerspectiveFovRH(m_mProjection, g_FOV, f2vt((float)PVRShellGet(prefWidth)/(float)PVRShellGet(prefHeight)), f2vt(g_fCameraNear), f2vt(g_fCameraFar), bRotate);

	PVRTMatrixLookAtRH(m_mView, vFrom, vTo, vUp);

	glClearColor(0.0f, 0.0f, 0.0f, 1.0f);

	//this must be called after InitApplication
	CreateCover();

	// Enable culling
	glEnable(GL_CULL_FACE);
	return true;
}

/*!****************************************************************************
 @Function		InitApplication
 @Return		bool		true if no error occurred
 @Description	Code in InitApplication() will be called by PVRShell once per
				run, before the rendering context is created.
				Used to initialize variables that are not dependant on it
				(e.g. external modules, loading meshes, etc.)
				If the rendering context is lost, InitApplication() will
				not be called again.
******************************************************************************/
bool OGLES2Glass::InitApplication()
{
	m_puiVbo = 0;
	m_puiIndexVbo = 0;
	m_puiBalloonVbo = 0;
	m_puiBalloonIndexVbo = 0;

	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));

	// Load the mask
	if (m_Ball.ReadFromFile(c_szBallFile) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	// Load the balloon
	if (m_Balloon.ReadFromFile(c_szBalloonFile) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	m_ulTime = ULONG_MAX;

	m_afAngles[0] = 0.0f;
	m_afAngles[1] = 0.0f;

	m_iEffect = 0;

	return true;
}

// ---------------------------------------------------------------
bool MyPVRDemo::InitApplication()
	{
#ifdef PLATFORM_IOS
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));
#endif
	
	if (m_Model.ReadFromFile(c_szSceneFile) != PVR_SUCCESS)
		{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
		}

	assert(enumMODEL_MAX == m_Model.nNumMesh);

	// Calculate a bounding box around the statue that we can use later on
	SPODMesh* pMesh = &m_Model.pMesh[m_Model.pNode[enumMODEL_Statue].nIdx];
	PVRTBOUNDINGBOX bb;
	PVRTBoundingBoxComputeInterleaved(&bb, pMesh->pInterleaved, pMesh->nNumVertex, 0, pMesh->sVertex.nStride);

	// We need to calculate the longest possible length for our bounding box on the X and Z axis (as we're rotating around Y).
	float fLen[4];
	fLen[0] = sqrt(bb.Point[7].x * bb.Point[7].x + bb.Point[7].z * bb.Point[7].z);	// FR quadrant
	fLen[1] = sqrt(bb.Point[3].x * bb.Point[3].x + bb.Point[3].z * bb.Point[3].z);	// FL quadrant
	fLen[2] = sqrt(bb.Point[6].x * bb.Point[6].x + bb.Point[6].z * bb.Point[6].z);	// BR quadrant
	fLen[3] = sqrt(bb.Point[2].x * bb.Point[2].x + bb.Point[2].z * bb.Point[2].z);	// BL quadrant
	
	float fLongest = max(fLen[0], fLen[1]);
	fLongest = max(fLongest, fLen[2]);
	fLongest = max(fLongest, fLen[3]);
		
	// Calculate the top left and bottom right of the bounding box in 2D space
	m_bbStatueTL = PVRTVec4(-fLongest, bb.Point[3].y, bb.Point[3].z, 1.0f);
	m_bbStatueBR = PVRTVec4( fLongest, bb.Point[5].y, bb.Point[5].z, 1.0f);

	// Some nice variables
	m_fAngleY = 0.0f;
	m_fBloomMulti = 0.3f;
	m_ulCurrTime = 0;
	m_fLightAngle = PVRT_PI / 8;	// Offset by 22.5degrees to begin with, so we see the shadow slightly offset from behind the model.

	m_fTexelOffset = 1.0f / RTT_SIZE;
	float w1 = 0.0555555f;
	float w2 = 0.2777777f;
	float intraTexelOffset = (w2 / (w1 + w2)) * m_fTexelOffset;		// Weight between 2 texels so that hardware filtering will
																	// interpolate the texels for us. Effectively reducing a 5x5 kernel
																	// to a 3x3.
	m_fTexelOffset += intraTexelOffset;

	return true;
	}

/*!****************************************************************************
 @Function		InitApplication
 @Return		bool		true if no error occured
 @Description	Code in InitApplication() will be called by PVRShell once per
				run, before the rendering context is created.
				Used to initialize variables that are not dependant on it
				(e.g. external modules, loading meshes, etc.)
				If the rendering context is lost, InitApplication() will
				not be called again.
******************************************************************************/
bool OGLES2LightMap::InitApplication()
{
	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Get and set the load/release functions for loading external files.
	// In the majority of cases the PVRShell will return NULL function pointers implying that
	// nothing special is required to load external files.
	CPVRTResourceFile::SetLoadReleaseFunctions(PVRShellGet(prefLoadFileFunc), PVRShellGet(prefReleaseFileFunc));

	// Load the scene files
	if(!m_Models[0].ReadFromFile(c_szMaskFile) ||
		!m_Models[1].ReadFromFile(c_szPlaneFile))
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	m_fAngleX = 0.0f;
	m_fAngleY = 0.0f;

	return true;
}

/*!****************************************************************************
 @Function		InitApplication
 @Return		bool		true if no error occured
 @Description	Code in InitApplication() will be called by PVRShell once per
				run, before the rendering context is created.
				Used to initialize variables that are not dependant on it
				(e.g. external modules, loading meshes, etc.)
				If the rendering context is lost, InitApplication() will
				not be called again.
******************************************************************************/
bool OGLES2StencilBuffer::InitApplication()
{
	// Get and set the read path for content files
	CPVRTResourceFile::SetReadPath((char*)PVRShellGet(prefReadPath));

	// Load the scene files
	if(!m_Cylinder.ReadFromFile(c_szCylinderFile) || 
		!m_Sphere.ReadFromFile(c_szSphereFile))
	{
		PVRShellSet(prefExitMessage, "ERROR: Couldn't load the .pod file\n");
		return false;
	}

	// Initialise the angle variable
	m_fAngle = 0.0f;

	// Request Stencil Buffer support
	PVRShellSet(prefStencilBufferContext, true);
	return true;
}

/*******************************************************************************
 * Function Name  : InitView
 * Returns        : true if no error occured
 * Description    : Code in InitView() will be called by the Shell upon a change
 *					in the rendering context.
 *					Used to initialize variables that are dependant on the rendering
 *					context (e.g. textures, vertex buffers, etc.)
 *******************************************************************************/
bool OGLESSkinning::InitView()
{
	CPVRTString error;

	//	Check to see whether the matrix palette extension is supported.
	if(!CPVRTglesExt::IsGLExtensionSupported("GL_OES_matrix_palette"))
	{
		PVRShellSet(prefExitMessage, "ERROR: The extension GL_OES_matrix_palette is unsupported.\n");
		return false;
	}

	// Initialise the matrix palette extensions
	m_Extensions.LoadExtensions();

	// Load the textures
	if(!LoadTextures(&error))
	{
		PVRShellSet(prefExitMessage, error.c_str());
		return false;
	}

	// Init Print3D to display text on screen
	bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);

	if(m_Print3D.SetTextures(0, PVRShellGet(prefWidth),PVRShellGet(prefHeight), bRotate) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Cannot initialise Print3D\n");
		return false;
	}

	// Model View Matrix
	CameraGetMatrix();

	// Projection Matrix
	glMatrixMode(GL_PROJECTION);
	glLoadMatrixf(m_mProjection.f);

	// GENERIC RENDER STATES

	// Enables Depth Testing
	glEnable(GL_DEPTH_TEST);

	// Enables Smooth Colour Shading
	glShadeModel(GL_SMOOTH);

	// Enable texturing
	glEnable(GL_TEXTURE_2D);

	// Define front faces
	glFrontFace(GL_CW);

	// Enables texture clamping
	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );

	// Reset the model view matrix to position the light
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();

	// Setup ambiant light
    glEnable(GL_LIGHTING);

	PVRTVec4 lightGlobalAmbient = PVRTVec4(1.0f, 1.0f, 1.0f, 1.0f);
	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lightGlobalAmbient.ptr());

	// Setup a directional light source
	PVRTVec4 lightPosition = PVRTVec4(-0.7f, -1.0f, 0.2f, 0.0f);
    PVRTVec4 lightAmbient  = PVRTVec4(1.0f, 1.0f, 1.0f, 1.0f);
    PVRTVec4 lightDiffuse  = PVRTVec4(1.0f, 1.0f, 1.0f, 1.0f);
    PVRTVec4 lightSpecular = PVRTVec4(0.2f, 0.2f, 0.2f, 1.0f);

    glEnable(GL_LIGHT0);
    glLightfv(GL_LIGHT0, GL_POSITION, lightPosition.ptr());
    glLightfv(GL_LIGHT0, GL_AMBIENT,  lightAmbient.ptr());
    glLightfv(GL_LIGHT0, GL_DIFFUSE,  lightDiffuse.ptr());
    glLightfv(GL_LIGHT0, GL_SPECULAR, lightSpecular.ptr());

	LoadVbos();

	/*
		Initialise an array to lookup the textures
		for each material in the scene.
	*/
	m_puiTextures = new GLuint[m_Scene.nNumMaterial];

	for(unsigned int i = 0; i < m_Scene.nNumMaterial; ++i)
	{
		m_puiTextures[i] = m_uiLegTex;

		SPODMaterial* pMaterial = &m_Scene.pMaterial[i];
		if(strcmp(pMaterial->pszName, "Mat_body") == 0)
		{
//.........这里部分代码省略.........

/*!****************************************************************************
 @Function		InitView
 @Return		bool		true if no error occured
 @Description	Code in InitView() will be called by PVRShell upon
				initialization or after a change in the rendering context.
				Used to initialize variables that are dependant on the rendering
				context (e.g. textures, vertex buffers, etc.)
******************************************************************************/
bool OGLES3Refraction::InitView()
{
	CPVRTString ErrorStr;

	/*
		Initialize VBO data
	*/
	LoadVbos();

	/*
		Load textures
	*/
	if (!LoadTextures(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	/*
		Load and compile the shaders & link programs
	*/
	if (!LoadShaders(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	// Set the sampler2D uniforms to corresponding texture units
	glUniform1i(glGetUniformLocation(m_ShaderProgram.uiId, "sTexture"), 0);

	// Is the screen rotated?
	m_bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);
	/*
		Initialize Print3D
	*/
	if(m_Print3D.SetTextures(0,PVRShellGet(prefWidth),PVRShellGet(prefHeight), m_bRotate) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Cannot initialise Print3D\n");
		return false;
	}

	/*
		Initalise the background
	*/

	if(m_Background.Init(0, m_bRotate, &ErrorStr) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	/*
		Calculate the projection and view matrices
	*/
	m_mProjection = PVRTMat4::PerspectiveFovRH(PVRT_PI/6, (float)PVRShellGet(prefWidth)/(float)PVRShellGet(prefHeight), CAM_NEAR, CAM_FAR, PVRTMat4::OGL, m_bRotate);

	m_mView = PVRTMat4::LookAtRH(PVRTVec3(0, 0, 150), PVRTVec3(0, 0, 0), PVRTVec3(0, 1, 0));

	/*
		Set OpenGL ES render states needed for this training course
	*/

	// Use a nice bright blue as clear colour
	glClearColor(0.6f, 0.8f, 1.0f, 1.0f);

	return true;
}

/*!****************************************************************************
 @Function		InitView
 @Return		bool		true if no error occured
 @Description	Code in InitView() will be called by PVRShell upon
				initialization or after a change in the rendering context.
				Used to initialize variables that are dependant on the rendering
				context (e.g. textures, vertex buffers, etc.)
******************************************************************************/
bool OGLES2AnisotropicLighting::InitView()
{
	CPVRTString ErrorStr;

	/*
		Initialize VBO data
	*/
	LoadVbos();

	/*
		Load textures
	*/
	if (!LoadTextures(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	/*
		Load and compile the shaders & link programs
	*/
	if (!LoadShaders(&ErrorStr))
	{
		PVRShellSet(prefExitMessage, ErrorStr.c_str());
		return false;
	}

	// Is the screen rotated?
	bool bRotate = PVRShellGet(prefIsRotated) && PVRShellGet(prefFullScreen);
	/*
		Initialize Print3D
	*/
	if(m_Print3D.SetTextures(0,PVRShellGet(prefWidth),PVRShellGet(prefHeight), bRotate) != PVR_SUCCESS)
	{
		PVRShellSet(prefExitMessage, "ERROR: Cannot initialise Print3D\n");
		return false;
	}

	/*
		Calculate the projection and view matrices
	*/
	float fAspect = PVRShellGet(prefWidth) / (float)PVRShellGet(prefHeight);
	m_mViewProj = PVRTMat4::PerspectiveFovFloatDepthRH(CAM_FOV, fAspect, CAM_NEAR, PVRTMat4::OGL, bRotate);
	m_mViewProj *= PVRTMat4::LookAtRH(PVRTVec3(0.f, 0.f, 150.f), PVRTVec3(0.f), PVRTVec3(0.f, 1.f, 0.f));

	/*
		Set uniforms that are constant throughout this training course
	*/
	// Set the sampler2D variable to the first texture unit
	glUseProgram(m_FastShader.uiId);
	glUniform1i(glGetUniformLocation(m_FastShader.uiId, "sTexture"), 0);

	// Define material properties
	glUseProgram(m_SlowShader.uiId);
	float afMaterial[4] = {
		0.4f,	// Diffuse intensity scale
		0.6f,	// Diffuse intensity bias
		0.82f,	// Specular intensity scale
		0.0f,	// Specular bias
	};
	glUniform4fv(glGetUniformLocation(m_SlowShader.uiId, "Material"), 1, afMaterial);
	// Set surface grain direction
	PVRTVec3 vMsGrainDir = PVRTVec3(2, 1, 0).normalized();
	glUniform3fv(glGetUniformLocation(m_SlowShader.uiId, "GrainDir"), 1, vMsGrainDir.ptr());

	/*
		Set OpenGL ES render states needed for this training course
	*/
	// Enable backface culling and depth test
	glCullFace(GL_BACK);
	glEnable(GL_CULL_FACE);

	// Enable z-buffer test
	// We are using a projection matrix optimized for a floating point depth buffer,
	// so the depth test and clear value need to be inverted (1 becomes near, 0 becomes far).
	glEnable(GL_DEPTH_TEST);
	glDepthFunc(GL_GEQUAL);
	glClearDepthf(0.0f);

	// Use a nice bright blue as clear colour
	glClearColor(0.6f, 0.8f, 1.0f, 1.0f);

	m_fAngleY = 0;
	m_eRenderMode = eTexLookup;

	return true;
}