// This is calulated elswhere and then sent to the shader:
mtxModelView = mtxView * mtxModel
mtxModelViewProj = mtxProjection * mtxModelView

// I then send said matrix to the vert shader:
paramModelViewProj = cgGetNamedParameter(vertProgram, "ModelViewProj");	
cgSetMatrixParameterfr(paramModelViewProj, mtxModelViewProj.matrix);

// Then, in my shader I'm using it like this:
uniform float4x4 ModelViewProj
...
oPosition =  mul(ModelViewProj, iPosition);

// Vert shadercgGLEnableProfile(CG_PROFILE_ARBVP1);cgGLBindProgram(vertProgram);// Frag shadercgGLEnableProfile(CG_PROFILE_ARBFP1);cgGLBindProgram(fragProgram);// Diffuse textureglActiveTextureARB(GL_TEXTURE0);glEnable(GL_TEXTURE_2D);glBindTexture(GL_TEXTURE_2D, texBase);		SMatrix4x4 mtxView = *sceneCam.ModelView();		SMatrix4x4 mtxModel = pMesh->mtxInvModelView;		SMatrix4x4 mtxModelView = mtxView * mtxModel;		SMatrix4x4 mtxProjection = *sceneCam.Projection();		SMatrix4x4 mtxMVP = mtxProjection * mtxModelView;                // Vert MVP matrix		paramModelViewProj = cgGetNamedParameter(vertProgram, "ModelViewProj"); 		cgSetMatrixParameterfr(paramModelViewProj, mtxMVP.matrix);		// Frag eye position (object space)		paramObjEyePos = cgGetNamedParameter(fragProgram, "objEyePos");		cgSetParameter3f(paramObjEyePos, v3dObjEyePos.x, v3dObjEyePos.y, v3dObjEyePos.z);				// I don't normally call this but I am doing so as I see it in the CG example code. I've tried commenting it out to no avail		cgUpdateProgramParameters(vertProgram);		cgUpdateProgramParameters(fragProgram);		pMesh->Draw();// Disable texture stagesglActiveTextureARB(GL_TEXTURE0);glDisable(GL_TEXTURE_2D);// Disable shaderscgGLDisableProfile(CG_PROFILE_ARBFP1);cgGLDisableProfile(CG_PROFILE_ARBVP1);

void main(in float4  iPosition				: ATTR0,		  in float4  iTangent				: ATTR1,		  in float4  iBiNormal				: ATTR2,		  in float4  iNormal				: ATTR3,		  in float4  iColour				: ATTR4,		  in float2  iTexCoord0				: ATTR5,		  in float2  iTexCoord1				: ATTR6,		  in float4  iCustomData			: ATTR7,		  out float4 oPosition				: POSITION,			// Translated and projected vertex position			  out float3 oVertex				: TEXCOORD0,		// Vertex (object space)		  out float3 oNormal				: TEXCOORD1,		// Normal (object space)		  uniform float4x4 ModelViewProj)// : state.matrix.mvp)	// ModelViewProjection matrix		{	// Transform and project the vertex	oPosition =  mul(ModelViewProj, iPosition);	oVertex = iPosition.xyz;	oNormal = iNormal.xyz;}