void AssembleTextureAtlas(Texture3D target, Texture2D[] srcTextures, int textureSize, int mipCount)
{
Shader imageShader = ResourceManager.Inst.GetShader("Generic2D");
RenderTarget2D rtTarget = new RenderTarget2D(GFX.Device, textureSize, textureSize, 1, SurfaceFormat.Color);
target = new Texture3D(GFX.Device, textureSize, textureSize, srcTextures.Length, mipCount, TextureUsage.AutoGenerateMipMap, SurfaceFormat.Color);
Color[] colorBuffer = new Color[textureSize * textureSize];
GFX.Device.SamplerStates[0].MagFilter = TextureFilter.Linear;
GFX.Device.SamplerStates[0].MinFilter = TextureFilter.Linear;
GFX.Device.SamplerStates[0].MipFilter = TextureFilter.Linear;
imageShader.SetupShader();
for (int i = 0; i < srcTextures.Length; i++)
{
GFX.Device.SetVertexShaderConstant(GFXShaderConstants.VC_INVTEXRES, Vector2.One / new Vector2(srcTextures[i].Width, srcTextures[i].Height));
GFX.Device.Textures[0] = srcTextures[i];
GFX.Device.SetRenderTarget(0, rtTarget);
GFXPrimitives.Quad.Render();
GFX.Device.SetRenderTarget(0, null);
rtTarget.GetTexture().GetData<Color>(colorBuffer);
target.SetData<Color>(colorBuffer, colorBuffer.Length * i, colorBuffer.Length, SetDataOptions.None);
}
target.GenerateMipMaps(TextureFilter.Linear);
}
