I noticed that from looking at other examples like say .. riemers tutorials he takes a buffer with a bunch of vector3's in it and ties it to a shader which expects a float4 ... why does this work in his situation and not mine?
Also is there a simple fix for this situation that will allow me to do this with the shader determining the w component as to my game logic this means nothing but is obviously crucial to the gpu.
Riemers code is here:
http://www.riemers.net/eng/Tutorials/XNA/Csharp/Series4/Textured_terrain.php
and mine (key parts only) ...
CPU Code:
public struct TexturedVertex: IVertex
{
public Vector3 Position { get; set; }
public Vector2 Uv { get; set; }
public TexturedVertex(Vector3 position, Vector2 uv) : this()
{
Position = position;
Uv = uv;
}
}
Shader Code:
struct VS_IN
{
float4 pos : POSITION;
float2 tex : TEXCOORD;
};
struct PS_IN
{
float4 pos : SV_POSITION;
float2 tex : TEXCOORD;
};
Texture2D picture;
SamplerState pictureSampler;
PS_IN VS(float4 inPos : POSITION, float2 uv : TEXCOORD)
{
PS_IN output = (PS_IN)0;
output.pos = mul(inPos, mul(World, ViewProjection));
output.tex = uv;
return output;
}
How do the two tie together?
I am however using sharpDX not XNA so my code for setting up the buffers is different slightly ...
I created my own mesh class that does this:
VertexBuffer = Buffer.Create(device, BindFlags.VertexBuffer ,Vertices.ToArray());
context.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(VertexBuffer, Utilities.SizeOf<TexturedVertex>(), 0));
