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Fix T70807: Weight Paint Overlay XRay 

Weight paint overlay was not working when XRay was turned on.

The Weight Paint overlay is rendered directly into the default
framebuffer with a depth equal test. This test fails as the depth won't match.
This patch will update the depth buffer in these cases.

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D7176
This commit is contained in:
Jeroen Bakker 2020-03-26 08:59:02 +01:00 committed by Jeroen Bakker
parent 1b1c683f74
commit 1ca1744c29
Notes: blender-bot 2023-02-14 01:52:41 +01:00 
Referenced by issue #70807, Vertex paint is not visible in X-Ray view
2 changed files with 55 additions and 8 deletions
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60
source/blender/draw/engines/overlay/overlay_paint.c
View File

@ -28,6 +28,33 @@
#include "overlay_private.h"
/* Check if the given object is rendered (partially) transparent */
static bool paint_object_is_rendered_transparent(View3D *v3d, Object *ob)
{
if (v3d->shading.type == OB_WIRE) {
return true;
}
else if (v3d->shading.type == OB_SOLID) {
if (v3d->shading.flag & V3D_SHADING_XRAY) {
return true;
}
if (v3d->shading.color_type == V3D_SHADING_OBJECT_COLOR) {
return ob->color[3] < 1.0f;
}
else if (v3d->shading.color_type == V3D_SHADING_MATERIAL_COLOR) {
Mesh *me = ob->data;
for (int i = 0; i < me->totcol; i++) {
Material *mat = me->mat[i];
if (mat->a < 1.0f) {
return true;
}
}
}
}
return false;
}
void OVERLAY_paint_init(OVERLAY_Data *vedata)
{
OVERLAY_StorageList *stl = vedata->stl;
@ -35,6 +62,8 @@ void OVERLAY_paint_init(OVERLAY_Data *vedata)
const DRWContextState *draw_ctx = DRW_context_state_get();
pd->painting.in_front = draw_ctx->obact && (draw_ctx->obact->dtx & OB_DRAWXRAY);
pd->painting.alpha_blending = paint_object_is_rendered_transparent(draw_ctx->v3d,
draw_ctx->obact);
}
void OVERLAY_paint_cache_init(OVERLAY_Data *vedata)
@ -46,9 +75,10 @@ void OVERLAY_paint_cache_init(OVERLAY_Data *vedata)
DRWShadingGroup *grp;
DRWState state;
const bool use_alpha_blending = (draw_ctx->v3d->shading.type == OB_WIRE);
const bool draw_contours = (pd->overlay.wpaint_flag & V3D_OVERLAY_WPAINT_CONTOURS) != 0;
float opacity = 0.0f;
pd->paint_depth_grp = NULL;
psl->paint_depth_ps = NULL;
switch (pd->ctx_mode) {
case CTX_MODE_POSE:
@ -56,16 +86,23 @@ void OVERLAY_paint_cache_init(OVERLAY_Data *vedata)
opacity = pd->overlay.weight_paint_mode_opacity;
if (opacity > 0.0f) {
state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL;
state |= use_alpha_blending ? DRW_STATE_BLEND_ALPHA : DRW_STATE_BLEND_MUL;
state |= pd->painting.alpha_blending ? DRW_STATE_BLEND_ALPHA : DRW_STATE_BLEND_MUL;
DRW_PASS_CREATE(psl->paint_color_ps, state | pd->clipping_state);
sh = OVERLAY_shader_paint_weight();
pd->paint_surf_grp = grp = DRW_shgroup_create(sh, psl->paint_color_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "drawContours", draw_contours);
DRW_shgroup_uniform_bool_copy(grp, "useAlphaBlend", use_alpha_blending);
DRW_shgroup_uniform_bool_copy(grp, "useAlphaBlend", pd->painting.alpha_blending);
DRW_shgroup_uniform_float_copy(grp, "opacity", opacity);
DRW_shgroup_uniform_texture(grp, "colorramp", G_draw.weight_ramp);
if (pd->painting.alpha_blending) {
state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL;
DRW_PASS_CREATE(psl->paint_depth_ps, state);
sh = OVERLAY_shader_depth_only();
pd->paint_depth_grp = DRW_shgroup_create(sh, psl->paint_depth_ps);
}
}
break;
}
@ -73,13 +110,13 @@ void OVERLAY_paint_cache_init(OVERLAY_Data *vedata)
opacity = pd->overlay.vertex_paint_mode_opacity;
if (opacity > 0.0f) {
state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL;
state |= use_alpha_blending ? DRW_STATE_BLEND_ALPHA : DRW_STATE_BLEND_MUL;
state |= pd->painting.alpha_blending ? DRW_STATE_BLEND_ALPHA : DRW_STATE_BLEND_MUL;
DRW_PASS_CREATE(psl->paint_color_ps, state | pd->clipping_state);
sh = OVERLAY_shader_paint_vertcol();
pd->paint_surf_grp = grp = DRW_shgroup_create(sh, psl->paint_color_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_bool_copy(grp, "useAlphaBlend", use_alpha_blending);
DRW_shgroup_uniform_bool_copy(grp, "useAlphaBlend", pd->painting.alpha_blending);
DRW_shgroup_uniform_float_copy(grp, "opacity", opacity);
}
break;
@ -173,11 +210,15 @@ void OVERLAY_paint_vertex_cache_populate(OVERLAY_Data *vedata, Object *ob)
const bool use_face_sel = (me_orig->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
const bool use_vert_sel = (me_orig->editflag & ME_EDIT_PAINT_VERT_SEL) != 0;
if (pd->paint_surf_grp) {
if (ob->mode == OB_MODE_WEIGHT_PAINT) {
if (ob->mode == OB_MODE_WEIGHT_PAINT) {
if (pd->paint_surf_grp) {
geom = DRW_cache_mesh_surface_weights_get(ob);
DRW_shgroup_call(pd->paint_surf_grp, geom, ob);
}
if (pd->paint_depth_grp) {
geom = DRW_cache_mesh_surface_weights_get(ob);
DRW_shgroup_call(pd->paint_depth_grp, geom, ob);
}
}
if (use_face_sel || use_wire) {
@ -210,10 +251,13 @@ void OVERLAY_paint_draw(OVERLAY_Data *vedata)
DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get();
if (DRW_state_is_fbo()) {
/* Pain overlay needs final color because of multiply blend mode. */
/* Paint overlay needs final color because of multiply blend mode. */
GPU_framebuffer_bind(pd->painting.in_front ? dfbl->in_front_fb : dfbl->default_fb);
}
if (psl->paint_depth_ps) {
DRW_draw_pass(psl->paint_depth_ps);
}
if (psl->paint_color_ps) {
DRW_draw_pass(psl->paint_color_ps);
}

3
source/blender/draw/engines/overlay/overlay_private.h
View File

@ -93,6 +93,7 @@ typedef struct OVERLAY_PassList {
DRWPass *outlines_detect_ps;
DRWPass *outlines_resolve_ps;
DRWPass *paint_color_ps;
DRWPass *paint_depth_ps;
DRWPass *paint_overlay_ps;
DRWPass *particle_ps;
DRWPass *pointcloud_ps;
@ -245,6 +246,7 @@ typedef struct OVERLAY_PrivateData {
DRWShadingGroup *motion_path_points_grp;
DRWShadingGroup *outlines_grp;
DRWShadingGroup *outlines_gpencil_grp;
DRWShadingGroup *paint_depth_grp;
DRWShadingGroup *paint_surf_grp;
DRWShadingGroup *paint_wire_grp;
DRWShadingGroup *paint_wire_selected_grp;
@ -318,6 +320,7 @@ typedef struct OVERLAY_PrivateData {
} armature;
struct {
bool in_front;
bool alpha_blending;
} painting;
struct {
DRWCallBuffer *handle[2];