Created ComputeInputLayout (markdown)

ComputeInputLayout.md

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+Returns the byte offsets for each element of an input layout and the implied vertex stride from a given Direct3D 11 input layout description.
+
+    void ComputeInputLayout(
+       const D3D11_INPUT_ELEMENT_DESC* vbDecl, size_t nDecl,
+       uint32_t* offsets, uint32_t* strides );
+
+# Parameters
+
+_vbDecl_: Input layout description, which is nDecl elements long.
+
+_offsets_: Must have nDecl elements of space.
+
+_strides_: Must have ``D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT`` of space. Can be nullptr.
+
+# Example
+
+    const D3D11_INPUT_ELEMENT_DESC inputLayout[] =
+    {
+    { "SV_Position", 0, DXGI_FORMAT_R32G32B32_FLOAT,    0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "NORMAL",      0, DXGI_FORMAT_R32G32B32_FLOAT,    0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "TANGENT",     0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "COLOR",       0, DXGI_FORMAT_R8G8B8A8_UNORM,     0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "TEXCOORD",    0, DXGI_FORMAT_R32G32_FLOAT,       0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "BLENDINDICES",0, DXGI_FORMAT_R8G8B8A8_UINT,      0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    { "BLENDWEIGHT", 0, DXGI_FORMAT_R8G8B8A8_UNORM,     0, D3D11_APPEND_ALIGNED_ELEMENT, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    };
+
+    uint32_t offsets[ D3D11_IA_VERTEX_INPUT_STRUCTURE_ELEMENT_COUNT ];
+    uint32_t strides[ D3D11_IA_VERTEX_INPUT_RESOURCE_SLOT_COUNT ];
+    ComputeInputLayout( &inputLayout, 7, offsets, strides );
+
+    // strides[0] contains 60
+    // offsets contains = { 0, 12, 24, 40, 44, 52, 56 }