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Added a hint SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE to control whether to use system mouse acceleration on raw relative motion.

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This is currently only implemented on Windows, and "Enhanced pointer
precision" mode is not quite correct.
This commit is contained in:
Sam Lantinga
2022-08-22 16:25:25 -07:00
parent 3ce3594e38
commit 92b3c53c92
6 changed files with 249 additions and 8 deletions
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11
include/SDL_hints.h
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@@ -1106,6 +1106,17 @@ extern "C" {
*/
#define SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE "SDL_MOUSE_RELATIVE_SPEED_SCALE"
/**
* \brief A variable controlling whether the system mouse acceleration curve is used for relative mouse motion.
*
* This variable can be set to the following values:
* "0" - Relative mouse motion will be unscaled (the default)
* "1" - Relative mouse motion will be scaled using the system mouse acceleration curve.
*
* If SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE is set, that will override the system speed scale.
*/
#define SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE "SDL_MOUSE_RELATIVE_SYSTEM_SCALE"
/**
* \brief A variable controlling whether a motion event should be generated for mouse warping in relative mode.
*