Add a more helpful panic message when GL errors occur.
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@ -921,9 +921,20 @@ impl GLVersion {
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#[cfg(debug_assertions)]
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fn ck() {
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unsafe {
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// Note that ideally we should be calling gl::GetError() in a loop until it
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// returns gl::NO_ERROR, but for now we'll just report the first one we find.
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let err = gl::GetError();
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if err != 0 {
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panic!("GL error: 0x{:x}", err);
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if err != gl::NO_ERROR {
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panic!("GL error: 0x{:x} ({})", err, match err {
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gl::INVALID_ENUM => "INVALID_ENUM",
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gl::INVALID_VALUE => "INVALID_VALUE",
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gl::INVALID_OPERATION => "INVALID_OPERATION",
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gl::INVALID_FRAMEBUFFER_OPERATION => "INVALID_FRAMEBUFFER_OPERATION",
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gl::OUT_OF_MEMORY => "OUT_OF_MEMORY",
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gl::STACK_UNDERFLOW => "STACK_UNDERFLOW",
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gl::STACK_OVERFLOW => "STACK_OVERFLOW",
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_ => "Unknown"
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});
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}
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}
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}
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