void OSLShaderGroupExec::execute_shading(
const ShaderGroup& shader_group,
const ShadingPoint& shading_point) const
{
assert(m_osl_shading_context);
assert(m_osl_thread_info);
m_osl_shading_system.execute(
*m_osl_shading_context,
*shader_group.shadergroup_ref(),
shading_point.get_osl_shader_globals());
}
void OSLShaderGroupExec::execute_transparency(
const ShaderGroup& shader_group,
const ShadingPoint& shading_point,
Alpha& alpha,
float* holdout) const
{
// Switch temporary the ray type to Shadow.
ShadingRay::TypeType saved_type = shading_point.m_ray.m_type;
shading_point.m_ray.m_type = ShadingRay::ShadowRay;
m_osl_shading_system.execute(
*m_osl_shading_context,
*shader_group.shadergroup_ref(),
shading_point.get_osl_shader_globals());
process_transparency_tree(shading_point.get_osl_shader_globals().Ci, alpha);
if (holdout)
*holdout = process_holdout_tree(shading_point.get_osl_shader_globals().Ci);
// Restore the original ray type.
shading_point.m_ray.m_type = saved_type;
}
