Function Compute_GetConstants

engine/gamesys/src/gamesys/scripts/script_compute.cpp:199–229

gets shader constants from a compute program * Returns a table of all the shader constants in the compute program. * * @name compute.get_constants * * @param path [type:hash|string] The path to the resource * @return table [type:table] A table of tables, where each entry contains info about the shader constants: * * `name` * : [type:hash] the hashed nam

     * ```
     */
    static int Compute_GetConstants(lua_State* L)
    {
        DM_LUA_STACK_CHECK(L, 1);

        ComputeResource* compute_res = CheckComputeResource(L, 1);

        lua_newtable(L);

        uint32_t constant_index = 1;

        uint32_t constant_count = dmRender::GetComputeProgramConstantCount(compute_res->m_Program);
        for (int i = 0; i < constant_count; ++i)
        {
            dmhash_t name_hash;
            dmRender::GetComputeProgramConstantNameHash(compute_res->m_Program, i, &name_hash);

            dmRender::HConstant constant;

            if (dmRender::GetComputeProgramConstant(compute_res->m_Program, name_hash, constant))
            {
                lua_pushinteger(L, (lua_Integer) constant_index++);
                lua_newtable(L);

                PushRenderConstant(L, constant);

                lua_rawset(L, -3);
            }
        }

        return 1;
    }

    /*# gets textures associated with a compute program
     * Returns a table of all the textures from the compute program.