static void gpu_OnSetConstants(MaterialRendererServices services, int userData)
{
VideoDriver driver = services.VideoDriver;
if (useHighLevelShaders && shaderFirstUpdate)
{
shaderWorldViewProjId = services.GetVertexShaderConstantID("mWorldViewProj");
shaderTransWorldId = services.GetVertexShaderConstantID("mTransWorld");
shaderInvWorldId = services.GetVertexShaderConstantID("mInvWorld");
shaderLightPosId = services.GetVertexShaderConstantID("mLightPos");
shaderLightColorId = services.GetVertexShaderConstantID("mLightColor");
// textures id are important only for OpenGL interface
if (driver.DriverType == DriverType.OpenGL)
{
shaderTextureId = services.GetVertexShaderConstantID("myTexture");
}
shaderFirstUpdate = false;
}
// set inverted world matrix
// if we are using highlevel shaders (the user can select this when
// starting the program), we must set the constants by name
Matrix invWorld = driver.GetTransform(TransformationState.World);
invWorld.MakeInverse();
if (useHighLevelShaders)
{
services.SetVertexShaderConstant(shaderInvWorldId, invWorld.ToArray());
}
else
{
services.SetVertexShaderConstant(0, invWorld.ToArray());
}
// set clip matrix
Matrix worldViewProj = driver.GetTransform(TransformationState.Projection);
worldViewProj *= driver.GetTransform(TransformationState.View);
worldViewProj *= driver.GetTransform(TransformationState.World);
if (useHighLevelShaders)
{
services.SetVertexShaderConstant(shaderWorldViewProjId, worldViewProj.ToArray());
}
else
{
services.SetVertexShaderConstant(4, worldViewProj.ToArray());
}
// set camera position
Vector3Df pos = device.SceneManager.ActiveCamera.AbsolutePosition;
if (useHighLevelShaders)
{
services.SetVertexShaderConstant(shaderLightPosId, pos.ToArray());
}
else
{
services.SetVertexShaderConstant(8, pos.ToArray());
}
// set light color
Colorf col = new Colorf(0, 1, 1, 0);
if (useHighLevelShaders)
{
services.SetVertexShaderConstant(shaderLightColorId, col.ToArray());
}
else
{
services.SetVertexShaderConstant(9, col.ToArray());
}
// set transposed world matrix
Matrix transpWorld = driver.GetTransform(TransformationState.World).Transposed;
if (useHighLevelShaders)
{
services.SetVertexShaderConstant(shaderTransWorldId, transpWorld.ToArray());
services.SetPixelShaderConstant(shaderTextureId, new int[] { 0 });
}
else
{
services.SetVertexShaderConstant(10, transpWorld.ToArray());
}
}