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00534d8bbc
Three pieces of queryable buffer state were missing, all of them read by the KHR-GL40.draw_indirect basic-binding-* and basic-buffer-* cases: - GL_DRAW_INDIRECT_BUFFER_BINDING had no case in glGetIntegerv, so it raised GL_INVALID_ENUM and left the caller's variable untouched (the test read back its own -9999 sentinel). GL_DISPATCH_INDIRECT_BUFFER_BINDING right next to it was already handled; this is the same two lines against BufferTarget::DrawIndirect. Because glGetBooleanv/glGetFloatv/glGetDoublev all widen from the integer path, one case fixes all four getters. - GL_BUFFER_ACCESS answered 0 for an unmapped buffer. Its initial value is GL_READ_WRITE and glUnmapBuffer restores it (GL 4.6 core table 6.2); 0 is not a legal value of that state at all, and the test threw on the unrecognised enum. - GL_BUFFER_ACCESS_FLAGS was not implemented, so it fell through to the invalid-pname arm. It is the MapBufferRange bitfield verbatim, which the mapping access flags already hold in normalised form - glMapBuffer's access enum is converted on the way in - so it converts straight back out, and reads zero while unmapped.