Commit: ffca77814e642f5962481be96deb336ea5f86ff6
Author: Clément Foucault
Date: Thu May 3 15:43:42 2018 +0200
Branches: blender2.8
https://developer.blender.org/rBffca77814e642f5962481be96deb336ea5f86ff6
DRW: Add plane culling test.
Usefull to see if the view frustum is totally behind a plane.
===================================================================
M source/blender/draw/intern/DRW_render.h
M source/blender/draw/intern/draw_manager.h
M source/blender/draw/intern/draw_manager_exec.c
===================================================================
diff --git a/source/blender/draw/intern/DRW_render.h
b/source/blender/draw/intern/DRW_render.h
index c0f5a0df3bf..51fba1500f7 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -462,6 +462,7 @@ void DRW_state_clip_planes_reset(void);
/* Culling, return true if object is inside view frustum. */
bool DRW_culling_sphere_test(BoundSphere *bsphere);
bool DRW_culling_box_test(BoundBox *bbox);
+bool DRW_culling_plane_test(float plane[4]);
/* Selection */
void DRW_select_load_id(unsigned int id);
diff --git a/source/blender/draw/intern/draw_manager.h
b/source/blender/draw/intern/draw_manager.h
index c6c2d5928d8..00d7c7233a5 100644
--- a/source/blender/draw/intern/draw_manager.h
+++ b/source/blender/draw/intern/draw_manager.h
@@ -320,6 +320,7 @@ typedef struct DRWManager {
struct {
float frustum_planes[6][4];
+ BoundBox frustum_corners;
BoundSphere frustum_bsphere;
bool updated;
} clipping;
diff --git a/source/blender/draw/intern/draw_manager_exec.c
b/source/blender/draw/intern/draw_manager_exec.c
index a70d80257e6..232ae36438e 100644
--- a/source/blender/draw/intern/draw_manager_exec.c
+++ b/source/blender/draw/intern/draw_manager_exec.c
@@ -461,6 +461,8 @@ static void draw_clipping_setup_from_view(void)
mul_m4_v3(viewinv, bbox.vec[i]);
}
+ memcpy(&DST.clipping.frustum_corners, &bbox, sizeof(BoundBox));
+
/* Compute clip planes using the world space frustum corners. */
for (int p = 0; p < 6; p++) {
int q, r;
@@ -640,6 +642,22 @@ bool DRW_culling_box_test(BoundBox *bbox)
return true;
}
+/* Return True if the current view frustum is inside or intersect the given
plane */
+bool DRW_culling_plane_test(float plane[4])
+{
+ draw_clipping_setup_from_view();
+
+ /* Test against the 8 frustum corners. */
+ for (int c = 0; c < 8; c++) {
+ float dist = plane_point_side_v3(plane,
DST.clipping.frustum_corners.vec[c]);
+ if (dist < 0.0f) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
/** \} */
/* -------------------------------------------------------------------- */
_______________________________________________
Bf-blender-cvs mailing list
[email protected]
https://lists.blender.org/mailman/listinfo/bf-blender-cvs
