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Add feature available/implemented errors

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This adds two new error codes: GLFW_FEATURE_UNAVAILABLE for when
a GLFW feature cannot be reasonably implemented on that platform, and
GLFW_FEATURE_UNIMPLEMENTED for when it can be but has not been yet.

This replaces the current situation where the Wayland code emitted
GLFW_PLATFORM_ERROR in both cases while the macOS code silently did
nothing.

If your application exits on any GLFW error, these error codes should at
least be easy to filter out from that behavior.

Ideally, GLFW_FEATURE_UNAVAILABLE should be rare and
GLFW_FEATURE_UNIMPLEMENTED should never be emitted at all.

Fixes #1692.
This commit is contained in:
Camilla Löwy
2020-05-20 18:02:58 +02:00
parent fbf8aae44f
commit 9a87c2a4b4
6 changed files with 81 additions and 35 deletions
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src/init.c
+4
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@@ -191,6 +191,10 @@ void _glfwInputError(int code, const char* format, ...)
strcpy(description, "The specified window has no context");
else if (code == GLFW_CURSOR_UNAVAILABLE)
strcpy(description, "The specified cursor shape is unavailable");
else if (code == GLFW_FEATURE_UNAVAILABLE)
strcpy(description, "The requested feature cannot be implemented for this platform");
else if (code == GLFW_FEATURE_UNIMPLEMENTED)
strcpy(description, "The requested feature has not yet been implemented for this platform");
else
strcpy(description, "ERROR: UNKNOWN GLFW ERROR");
}