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Differential D11057 Diff 36450 source/blender/editors/space_view3d/view3d_utils.c

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source/blender/editors/space_view3d/view3d_utils.c

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} }
/** \} */ /** \} */
/* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */
/** \name Depth Buffer Utilities /** \name Depth Buffer Utilities
* \{ */ * \{ */
struct ReadData {
int count;
int count_max;
float r_depth;
};
static bool depth_read_test_fn(const void *value, void *userdata) static bool depth_read_test_fn(const void *value, void *userdata)
{ {
float *r_depth = userdata; struct ReadData *data = userdata;
float depth = *(float *)value; float depth = *(float *)value;
if (depth < *r_depth) { if (depth < data->r_depth) {
*r_depth = depth; data->r_depth = depth;
}
if ((++data->count) >= data->count_max) {
/* Outside the margin. */
return true;
} }
return false; return false;
} }
bool ED_view3d_depth_read_cached(const ViewDepths *vd, bool ED_view3d_depth_read_cached(const ViewDepths *vd,
const int mval[2], const int mval[2],
int margin, int margin,
float *r_depth) float *r_depth)
{ {
if (!vd || !vd->depths) { if (!vd || !vd->depths) {
return false; return false;
} }
int x = mval[0]; int x = mval[0];
int y = mval[1]; int y = mval[1];
if (x < 0 || y < 0 || x >= vd->w || y >= vd->h) { if (x < 0 || y < 0 || x >= vd->w || y >= vd->h) {
return false; return false;
} }
float depth = 1.0f; float depth = 1.0f;
if (margin) { if (margin) {
/* TODO: No need to go spiral. */
int shape[2] = {vd->w, vd->h}; int shape[2] = {vd->w, vd->h};
BLI_array_iter_spiral_square(vd->depths, shape, mval, depth_read_test_fn, &depth); int pixel_count = (min_ii(x + margin + 1, shape[1]) - max_ii(x - margin, 0)) *
(min_ii(y + margin + 1, shape[0]) - max_ii(y - margin, 0));
struct ReadData data;
data.count = 0;
data.count_max = pixel_count;
data.r_depth = 1.0f;
/* TODO: No need to go spiral. */
BLI_array_iter_spiral_square(vd->depths, shape, mval, depth_read_test_fn, &data);
depth = data.r_depth;
} }
else { else {
depth = vd->depths[y * vd->w + x]; depth = vd->depths[y * vd->w + x];
} }
BLI_assert(1.0 <= vd->depth_range[1]); BLI_assert(1.0 <= vd->depth_range[1]);
if (depth != 1.0f) { if (depth != 1.0f) {
*r_depth = depth; *r_depth = depth;
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