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Grid: Do not go over objects in front/side ortho views. 

Fixes T55190 Grid displayed on top of objects in orthographic view
This commit is contained in:
Clément Foucault 2018-05-27 11:25:29 +02:00
parent 9a74b60367
commit 4ca4e64d25
Notes: blender-bot 2023-02-14 08:35:51 +01:00 
Referenced by issue #55190, Grid displayed on top of objects in orthographic view
2 changed files with 22 additions and 12 deletions
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4
source/blender/draw/modes/object_mode.c
View File

@ -289,6 +289,7 @@ enum {
PLANE_YZ = (1 << 6),
CLIP_ZPOS = (1 << 7),
CLIP_ZNEG = (1 << 8),
GRID_BACK = (1 << 9),
};
/* *********** FUNCTIONS *********** */
@ -447,18 +448,21 @@ static void OBJECT_engine_init(void *vedata)
e_data.grid_flag |= SHOW_AXIS_Y;
e_data.grid_flag |= SHOW_AXIS_Z;
e_data.grid_flag |= SHOW_GRID;
e_data.grid_flag |= GRID_BACK;
}
else if (ELEM(rv3d->view, RV3D_VIEW_TOP, RV3D_VIEW_BOTTOM)) {
e_data.grid_flag = PLANE_XY;
e_data.grid_flag |= SHOW_AXIS_X;
e_data.grid_flag |= SHOW_AXIS_Y;
e_data.grid_flag |= SHOW_GRID;
e_data.grid_flag |= GRID_BACK;
}
else if (ELEM(rv3d->view, RV3D_VIEW_FRONT, RV3D_VIEW_BACK)) {
e_data.grid_flag = PLANE_XZ;
e_data.grid_flag |= SHOW_AXIS_X;
e_data.grid_flag |= SHOW_AXIS_Z;
e_data.grid_flag |= SHOW_GRID;
e_data.grid_flag |= GRID_BACK;
}
else { /* RV3D_VIEW_USER */
e_data.grid_flag = PLANE_XY;

30
source/blender/draw/modes/shaders/object_grid_frag.glsl
View File

@ -29,6 +29,7 @@ uniform int gridFlag;
#define PLANE_XY (1 << 4)
#define PLANE_XZ (1 << 5)
#define PLANE_YZ (1 << 6)
#define GRID_BACK (1 << 9) /* grid is behind objects */
#define GRID_LINE_SMOOTH 1.15
@ -137,18 +138,6 @@ void main()
}
}
/* Manual, non hard, depth test:
* Progressively fade the grid below occluders
* (avoids poping visuals due to depth buffer precision) */
float scene_depth = texture(depthBuffer, sPos).r;
/* Add a small bias so the grid will always
* be on top of a mesh with the same depth. */
float grid_depth = gl_FragCoord.z - 1e-8;
/* Harder settings tend to flicker more,
* but have less "see through" appearance. */
const float test_hardness = 1e4;
fade *= 1.0 - clamp((grid_depth - scene_depth) * test_hardness, 0.0, 1.0);
if ((gridFlag & GRID) > 0) {
float grid_res = log(dist * gridResolution) * gridOneOverLogSubdiv;
@ -217,5 +206,22 @@ void main()
}
}
float scene_depth = texture(depthBuffer, sPos).r;
if ((gridFlag & GRID_BACK) > 0) {
fade *= (scene_depth == 1.0) ? 1.0 : 0.0;
}
else {
/* Manual, non hard, depth test:
* Progressively fade the grid below occluders
* (avoids poping visuals due to depth buffer precision) */
/* Add a small bias so the grid will always
* be on top of a mesh with the same depth. */
float grid_depth = gl_FragCoord.z - 1e-8;
/* Harder settings tend to flicker more,
* but have less "see through" appearance. */
const float test_hardness = 1e4;
fade *= 1.0 - clamp((grid_depth - scene_depth) * test_hardness, 0.0, 1.0);
}
FragColor.a *= fade;
}