diff options
4 files changed, 19 insertions, 9 deletions
diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c index eda4d51e7e8..5c13fd37dda 100644 --- a/source/blender/editors/space_view3d/view3d_view.c +++ b/source/blender/editors/space_view3d/view3d_view.c @@ -1191,7 +1191,7 @@ int view3d_opengl_select( hits = GPU_select_end(); /* second pass, to get the closest object to camera */ - if (do_passes) { + if (do_passes && (hits > 0)) { GPU_select_begin(buffer, bufsize, &rect, GPU_SELECT_NEAREST_SECOND_PASS, hits); ED_view3d_draw_select_loop(vc, scene, v3d, ar, use_obedit_skip, use_nearest); diff --git a/source/blender/editors/transform/transform_manipulator.c b/source/blender/editors/transform/transform_manipulator.c index ab2a0225abc..ec066ba91a4 100644 --- a/source/blender/editors/transform/transform_manipulator.c +++ b/source/blender/editors/transform/transform_manipulator.c @@ -1755,7 +1755,7 @@ static int manipulator_selectbuf(Scene *scene, ScrArea *sa, ARegion *ar, const i hits = GPU_select_end(); - if (do_passes) { + if (do_passes && (hits > 0)) { GPU_select_begin(buffer, 64, &rect, GPU_SELECT_NEAREST_SECOND_PASS, hits); /* do the drawing */ diff --git a/source/blender/gpu/intern/gpu_select.c b/source/blender/gpu/intern/gpu_select.c index 9496ff137dc..632b0cfee1b 100644 --- a/source/blender/gpu/intern/gpu_select.c +++ b/source/blender/gpu/intern/gpu_select.c @@ -75,6 +75,12 @@ static GPUSelectState g_select_state = {0}; */ void GPU_select_begin(unsigned int *buffer, unsigned int bufsize, const rcti *input, char mode, int oldhits) { + if (mode == GPU_SELECT_NEAREST_SECOND_PASS) { + /* In the case hits was '-1', don't start the second pass since it's not going to give useful results. + * As well as buffer overflow in 'gpu_select_query_load_id'. */ + BLI_assert(oldhits != -1); + } + g_select_state.select_is_active = true; g_select_state.use_gpu_select = GPU_select_query_check_active(); g_select_state.mode = mode; diff --git a/source/blender/gpu/intern/gpu_select_sample_query.c b/source/blender/gpu/intern/gpu_select_sample_query.c index ba5fefc5227..3d589986281 100644 --- a/source/blender/gpu/intern/gpu_select_sample_query.c +++ b/source/blender/gpu/intern/gpu_select_sample_query.c @@ -142,13 +142,17 @@ bool gpu_select_query_load_id(unsigned int id) g_query_state.active_query++; g_query_state.query_issued = true; - if (g_query_state.mode == GPU_SELECT_NEAREST_SECOND_PASS && g_query_state.index < g_query_state.oldhits) { - if (g_query_state.buffer[g_query_state.index][3] == id) { - g_query_state.index++; - return true; - } - else { - return false; + if (g_query_state.mode == GPU_SELECT_NEAREST_SECOND_PASS) { + /* Second pass should never run if first pass fails, can read past 'bufsize' in this case. */ + BLI_assert(g_query_state.oldhits != -1); + if (g_query_state.index < g_query_state.oldhits) { + if (g_query_state.buffer[g_query_state.index][3] == id) { + g_query_state.index++; + return true; + } + else { + return false; + } } } |