diff options
author | Campbell Barton <ideasman42@gmail.com> | 2017-07-19 13:12:24 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2017-07-19 13:12:24 +0300 |
commit | abe0527e0fa77f15de4ebc7a7752a4c1375de1f1 (patch) | |
tree | faf9cec7e670d6d067e6f81bc0aebfcd174ca4a2 /source/blender/gpu/intern/gpu_select.c | |
parent | dd64cedd0b6b2bda4819e7093029f2a216f3082d (diff) |
Manipulators: use nearest manipulator
Add utility function to get the nearest hit
Diffstat (limited to 'source/blender/gpu/intern/gpu_select.c')
-rw-r--r-- | source/blender/gpu/intern/gpu_select.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_select.c b/source/blender/gpu/intern/gpu_select.c index 162a605ef3d..affc96b2843 100644 --- a/source/blender/gpu/intern/gpu_select.c +++ b/source/blender/gpu/intern/gpu_select.c @@ -227,3 +227,29 @@ bool GPU_select_is_cached(void) { return g_select_state.use_cache && gpu_select_pick_is_cached(); } + + +/* ---------------------------------------------------------------------------- + * Utilities + */ + +/** + * Helper function, nothing special but avoids doing inline since hit's aren't sorted by depth + * and purpose of 4x buffer indices isn't so clear. + * + * Note that comparing depth as uint is fine. + */ +const uint *GPU_select_buffer_near(const uint *buffer, int hits) +{ + const uint *buffer_near = NULL; + uint depth_min = (uint)-1; + for (int i = 0; i < hits; i++) { + if (buffer[1] < depth_min) { + BLI_assert(buffer[3] != -1); + depth_min = buffer[1]; + buffer_near = buffer; + } + buffer += 4; + } + return buffer_near; +}
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