sokol-shader-attrs.c

sg_shader shd = sg_make_shader(&(sg_shader_desc){
    .attrs = {
      [0] = { .sem_name="POS", .sem_index=0 },
      [1] = { .sem_name="COLOR", .sem_index=0 }
    },
    .vs.source = ...
      "struct vs_in {\n"
      "  float4 pos: POS;\n"
      "  float4 color: COLOR;\n"
      "};\n"
      ...
    .fs.source = ..
});

sg_pipeline pip = sg_make_pipeline(&(sg_pipeline_desc){
    .layout = {
        .attrs = {
            /* semantic name and index looked up from attrs table in shader */
            [0] = { .format = SG_VERTEXFORMAT_FLOAT3 },
            [1] = { .format = SG_VERTEXFORMAT_FLOAT4 }
        }
    },
    .shader = shd
});