/// <summary>
/// Creates a DatumIndex list of the bitmaps used in a shader
/// </summary>
/// <param name="shader_datum"></param>
/// <returns></returns>
protected override List <DatumIndex> GetShaderBitmaps(DatumIndex shader_datum)
{
List <DatumIndex> bitmap_datums = new List <DatumIndex>();
if (!IsDatumValid(shader_datum))
{
return(bitmap_datums);
}
Managers.TagManager shader_man = tagIndex[shader_datum];
H2.Tags.shader_group shader = shader_man.TagDefinition as H2.Tags.shader_group;
H2.Tags.global_shader_parameter_block block;
if ((block = FindParameter(shader, "base_map")) != null && IsDatumValid(block.Bitmap.Datum))
{
bitmap_datums.Add(block.Bitmap.Datum);
}
if ((block = FindParameter(shader, "alpha_test_map")) != null && IsDatumValid(block.Bitmap.Datum))
{
bitmap_datums.Add(block.Bitmap.Datum);
}
return(bitmap_datums);
}
/// <summary>
/// Searches a shader for a specific parameter by name
/// </summary>
/// <param name="shader">The shader to search in</param>
/// <param name="parameter_name">The name of the parameter to find</param>
/// <returns></returns>
H2.Tags.global_shader_parameter_block FindParameter(H2.Tags.shader_group shader, string parameter_name)
{
foreach (var block in shader.Parameters)
{
if (block.Name.ToString().Equals(parameter_name))
{
return(block);
}
}
return(null);
}
/// <summary>
/// Creates a phong definition using values from a shader tag
/// </summary>
/// <param name="shader_datum">DatumIndex of the shader to create a phong definition from</param>
/// <returns></returns>
protected override Fx.ColladaPhong CreatePhong(DatumIndex shader_datum)
{
Managers.TagManager shader_man = tagIndex[shader_datum];
// get the shader tag definition
H2.Tags.shader_group shader = GetTagDefinition <H2.Tags.shader_group>(
shader_datum, shader_man.GroupTag, Blam.Halo1.TagGroups.shdr);
Fx.ColladaPhong phong = CreateDefaultPhong();
H2.Tags.global_shader_parameter_block block;
phong.Diffuse.Color.SetColor(1, 1, 1, 1);
phong.Shininess.Float.Value = 30.0f;
// set up the effects variables with those from the shader
if ((block = FindParameter(shader, "emissive_color")) != null)
{
phong.Emission = new Fx.ColladaCommonColorOrTextureType();
phong.Emission.Color = new Core.ColladaColor(block.ConstColor, 1.0f);
}
if ((block = FindParameter(shader, "base_map")) != null && IsDatumValid(block.Bitmap.Datum))
{
phong.Diffuse.Color = null;
phong.Diffuse.Texture = CreateTexture(block.Bitmap.Datum, 0);
}
else if ((block = FindParameter(shader, "diffuse_color")) != null)
{
phong.Diffuse.Color.SetColor(block.ConstColor, 1.0f);
}
if ((block = FindParameter(shader, "specular_color")) != null)
{
phong.Specular.Color.SetColor(block.ConstColor, 1.0f);
}
if ((block = FindParameter(shader, "alpha_test_map")) != null && IsDatumValid(block.Bitmap.Datum))
{
phong.Transparent.Color = null;
phong.Transparent.Texture = CreateTexture(block.Bitmap.Datum, 0);
phong.Transparent.Opaque = Enums.ColladaFXOpaqueEnum.A_ONE;
}
return(phong);
}
