Function SetMaterialSampler

engine/gamesys/src/gamesys/scripts/script_material.cpp:732–757

sets texture samplers in a material * Sets texture samplers in a material, if the samplers exist. Use this function to change the settings of texture samplers. * To set actual textures that should be bound to the samplers, use the `material.set_textures` function instead. * * @name material.set_samplers * * @param path [type:hash|string] The path to the resource

     * ```
     */
    static int SetMaterialSampler(lua_State* L, MaterialResource* material_res, dmhash_t name_hash, int args_index)
    {
        args_index = args_index < 0 ? lua_gettop(L) + args_index + 1 : args_index;

        uint32_t unit = dmRender::GetMaterialSamplerUnit(material_res->m_Material, name_hash);
        if (unit == dmRender::INVALID_SAMPLER_UNIT)
        {
            return luaL_error(L, "Material sampler '%s' not found", dmHashReverseSafe64(name_hash));
        }

        dmRender::HSampler sampler = dmRender::GetMaterialSampler(material_res->m_Material, unit);

        dmRender::SamplerInfo sampler_info = {};
        dmRender::GetSamplerInfo(sampler, &sampler_info);

        luaL_checktype(L, args_index, LUA_TTABLE);
        lua_pushvalue(L, args_index);

        GetSamplerParametersFromLua(L, &sampler_info.m_UWrap, &sampler_info.m_VWrap, &sampler_info.m_MinFilter, &sampler_info.m_MagFilter, &sampler_info.m_MaxAnisotropy);

        lua_pop(L, 1);

        dmRender::SetMaterialSampler(material_res->m_Material, name_hash, unit, sampler_info.m_UWrap, sampler_info.m_VWrap, sampler_info.m_MinFilter, sampler_info.m_MagFilter, sampler_info.m_MaxAnisotropy);

        return 0;
    }

    static int Material_SetSamplers(lua_State* L)
    {