void generateQuad()
{
// Setup vertices for a single uv-mapped quad made from two triangles
VertexData[] quadCorners =
{
new VertexData
{
pos = new Vector3(1f, 1f, 0f),
uv = new Vector2(1.0f, 1.0f),
normal = new Vector3(0.0f, 0.0f, -1.0f)
},
new VertexData
{
pos = new Vector3(-1.0f, 1.0f, 0f),
uv = new Vector2(0.0f, 1.0f),
normal = new Vector3(0.0f, 0.0f, -1.0f)
},
new VertexData
{
pos = new Vector3(-1.0f, -1.0f, 0f),
uv = new Vector2(0.0f, 0.0f),
normal = new Vector3(0.0f, 0.0f, -1.0f)
},
new VertexData
{
pos = new Vector3(1.0f, -1.0f, 0f),
uv = new Vector2(1.0f, 0.0f),
normal = new Vector3(0.0f, 0.0f, -1.0f)
},
};
// Setup indices
var indices = new uint[] { 0, 1, 2, 2, 3, 0 };
indexCount = (uint)indices.Length;
var device = mManager.Configuration.Device;
Debug.Assert(device != null);
// Create buffers
// For the sake of simplicity we won't stage the vertex data to the gpu memory
// Vertex buffer
{
var bufferSize = (uint)(Marshal.SizeOf <VertexData>() * quadCorners.Length);
vertexBuffer = new BufferInfo(
mManager.Configuration.Partition,
MgBufferUsageFlagBits.VERTEX_BUFFER_BIT,
MgMemoryPropertyFlagBits.HOST_VISIBLE_BIT | MgMemoryPropertyFlagBits.HOST_COHERENT_BIT,
bufferSize);
vertexBuffer.SetData <VertexData>(bufferSize, quadCorners, 0, quadCorners.Length);
}
// Index buffer
{
var bufferSize = indexCount * sizeof(uint);
indexBuffer = new BufferInfo(
mManager.Configuration.Partition,
MgBufferUsageFlagBits.INDEX_BUFFER_BIT,
MgMemoryPropertyFlagBits.HOST_VISIBLE_BIT | MgMemoryPropertyFlagBits.HOST_COHERENT_BIT,
bufferSize);
indexBuffer.SetData(bufferSize, indices, 0, (int)indexCount);
}
}