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/*
* Copyright 2016, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Blender Institute
*
*/
/** \file blender/draw/modes/edit_mesh_mode.c
* \ingroup draw
*/
#include "DRW_engine.h"
#include "DRW_render.h"
#include "GPU_shader.h"
#include "GPU_viewport.h"
#include "DNA_view3d_types.h"
#include "draw_mode_pass.h"
#include "edit_mesh_mode.h"
/* keep it under MAX_PASSES */
typedef struct EDIT_MESH_PassList {
struct DRWPass *non_meshes_pass;
struct DRWPass *ob_center_pass;
struct DRWPass *wire_outline_pass;
struct DRWPass *depth_pass_hidden_wire;
struct DRWPass *edit_face_overlay_pass;
struct DRWPass *edit_face_occluded_pass;
struct DRWPass *mix_occlude_pass;
struct DRWPass *facefill_occlude_pass;
} EDIT_MESH_PassList;
/* keep it under MAX_BUFFERS */
typedef struct EDIT_MESH_FramebufferList {
struct GPUFrameBuffer *occlude_wire_fb;
struct GPUFrameBuffer *occlude_face_fb;
} EDIT_MESH_FramebufferList;
/* keep it under MAX_TEXTURES */
typedef struct EDIT_MESH_TextureList {
struct GPUTexture *occlude_wire_depth_tx;
struct GPUTexture *occlude_wire_color_tx;
struct GPUTexture *occlude_face_color_tx;
} EDIT_MESH_TextureList;
static DRWShadingGroup *depth_shgrp_hidden_wire;
static DRWShadingGroup *face_overlay_shgrp;
static DRWShadingGroup *ledges_overlay_shgrp;
static DRWShadingGroup *lverts_overlay_shgrp;
static DRWShadingGroup *facedot_overlay_shgrp;
static DRWShadingGroup *face_occluded_shgrp;
static DRWShadingGroup *ledges_occluded_shgrp;
static DRWShadingGroup *lverts_occluded_shgrp;
static DRWShadingGroup *facedot_occluded_shgrp;
static DRWShadingGroup *facefill_occluded_shgrp;
extern struct GPUUniformBuffer *globals_ubo; /* draw_mode_pass.c */
static struct GPUShader *overlay_tri_sh = NULL;
static struct GPUShader *overlay_tri_fast_sh = NULL;
static struct GPUShader *overlay_tri_vcol_sh = NULL;
static struct GPUShader *overlay_tri_vcol_fast_sh = NULL;
static struct GPUShader *overlay_edge_sh = NULL;
static struct GPUShader *overlay_edge_vcol_sh = NULL;
static struct GPUShader *overlay_vert_sh = NULL;
static struct GPUShader *overlay_facedot_sh = NULL;
static struct GPUShader *overlay_mix_sh = NULL;
static struct GPUShader *overlay_facefill_sh = NULL;
extern char datatoc_edit_overlay_frag_glsl[];
extern char datatoc_edit_overlay_vert_glsl[];
extern char datatoc_edit_overlay_geom_tri_glsl[];
extern char datatoc_edit_overlay_geom_edge_glsl[];
extern char datatoc_edit_overlay_loosevert_vert_glsl[];
extern char datatoc_edit_overlay_facedot_frag_glsl[];
extern char datatoc_edit_overlay_facedot_vert_glsl[];
extern char datatoc_edit_overlay_mix_vert_glsl[];
extern char datatoc_edit_overlay_mix_frag_glsl[];
extern char datatoc_edit_overlay_facefill_vert_glsl[];
extern char datatoc_edit_overlay_facefill_frag_glsl[];
void EDIT_MESH_init(void)
{
EDIT_MESH_TextureList *txl = DRW_mode_texture_list_get();
EDIT_MESH_FramebufferList *fbl = DRW_mode_framebuffer_list_get();
float *viewport_size = DRW_viewport_size_get();
DRWFboTexture tex[2] = {{&txl->occlude_wire_depth_tx, DRW_BUF_DEPTH_24},
{&txl->occlude_wire_color_tx, DRW_BUF_RGBA_8}};
DRW_framebuffer_init(&fbl->occlude_wire_fb,
(int)viewport_size[0], (int)viewport_size[1],
tex, 2);
DRWFboTexture tex2 = {&txl->occlude_face_color_tx, DRW_BUF_RGBA_8};
DRW_framebuffer_init(&fbl->occlude_face_fb,
(int)viewport_size[0], (int)viewport_size[1],
&tex2, 1);
if (!overlay_tri_sh) {
overlay_tri_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_tri_glsl,
datatoc_edit_overlay_frag_glsl, "#define EDGE_FIX\n");
}
if (!overlay_tri_fast_sh) {
overlay_tri_fast_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_tri_glsl,
datatoc_edit_overlay_frag_glsl, NULL);
}
if (!overlay_tri_vcol_sh) {
overlay_tri_vcol_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_tri_glsl,
datatoc_edit_overlay_frag_glsl, "#define EDGE_FIX\n"
"#define VERTEX_SELECTION\n");
}
if (!overlay_tri_vcol_fast_sh) {
overlay_tri_vcol_fast_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_tri_glsl,
datatoc_edit_overlay_frag_glsl, "#define VERTEX_SELECTION\n");
}
if (!overlay_edge_sh) {
overlay_edge_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_edge_glsl,
datatoc_edit_overlay_frag_glsl, NULL);
}
if (!overlay_edge_vcol_sh) {
overlay_edge_vcol_sh = DRW_shader_create(datatoc_edit_overlay_vert_glsl,
datatoc_edit_overlay_geom_edge_glsl,
datatoc_edit_overlay_frag_glsl, "#define VERTEX_SELECTION\n");
}
if (!overlay_vert_sh) {
overlay_vert_sh = DRW_shader_create(datatoc_edit_overlay_loosevert_vert_glsl, NULL,
datatoc_edit_overlay_frag_glsl, "#define VERTEX_SELECTION\n");
}
if (!overlay_facedot_sh) {
overlay_facedot_sh = DRW_shader_create(datatoc_edit_overlay_facedot_vert_glsl, NULL,
datatoc_edit_overlay_facedot_frag_glsl, NULL);
}
if (!overlay_mix_sh) {
overlay_mix_sh = DRW_shader_create(datatoc_edit_overlay_mix_vert_glsl, NULL,
datatoc_edit_overlay_mix_frag_glsl, NULL);
}
if (!overlay_facefill_sh) {
overlay_facefill_sh = DRW_shader_create(datatoc_edit_overlay_facefill_vert_glsl, NULL,
datatoc_edit_overlay_facefill_frag_glsl, NULL);
}
}
static DRWPass *edit_mesh_create_overlay_pass(DRWShadingGroup **face_shgrp, DRWShadingGroup **ledges_shgrp,
DRWShadingGroup **lverts_shgrp, DRWShadingGroup **facedot_shgrp,
float *faceAlpha, DRWState statemod)
{
static struct GPUShader *tri_sh, *ledge_sh;
const struct bContext *C = DRW_get_context();
RegionView3D *rv3d = CTX_wm_region_view3d(C);
Scene *scene = CTX_data_scene(C);
ToolSettings *ts = scene->toolsettings;
if ((ts->selectmode & SCE_SELECT_VERTEX) != 0) {
ledge_sh = overlay_edge_vcol_sh;
if ((rv3d->rflag & RV3D_NAVIGATING) != 0)
tri_sh = overlay_tri_vcol_fast_sh;
else
tri_sh = overlay_tri_vcol_sh;
}
else {
ledge_sh = overlay_edge_sh;
if ((rv3d->rflag & RV3D_NAVIGATING) != 0)
tri_sh = overlay_tri_fast_sh;
else
tri_sh = overlay_tri_sh;
}
DRWPass *pass = DRW_pass_create("Edit Mesh Face Overlay Pass", DRW_STATE_WRITE_COLOR | DRW_STATE_POINT | statemod);
*face_shgrp = DRW_shgroup_create(tri_sh, pass);
DRW_shgroup_uniform_block(*face_shgrp, "globalsBlock", globals_ubo, 0);
DRW_shgroup_uniform_vec2(*face_shgrp, "viewportSize", DRW_viewport_size_get(), 1);
DRW_shgroup_uniform_float(*face_shgrp, "faceAlphaMod", faceAlpha, 1);
*ledges_shgrp = DRW_shgroup_create(ledge_sh, pass);
DRW_shgroup_uniform_vec2(*ledges_shgrp, "viewportSize", DRW_viewport_size_get(), 1);
if ((ts->selectmode & (SCE_SELECT_VERTEX)) != 0) {
*lverts_shgrp = DRW_shgroup_create(overlay_vert_sh, pass);
DRW_shgroup_uniform_vec2(*lverts_shgrp, "viewportSize", DRW_viewport_size_get(), 1);
}
if ((ts->selectmode & (SCE_SELECT_FACE)) != 0) {
*facedot_shgrp = DRW_shgroup_create(overlay_facedot_sh, pass);
}
return pass;
}
static float backwire_opacity;
static float face_mod;
void EDIT_MESH_cache_init(void)
{
EDIT_MESH_PassList *psl = DRW_mode_pass_list_get();
const struct bContext *C = DRW_get_context();
View3D *v3d = CTX_wm_view3d(C);
bool do_zbufclip = ((v3d->flag & V3D_ZBUF_SELECT) == 0);
static float zero = 0.0f;
static struct GPUShader *depth_sh;
if (!depth_sh)
depth_sh = DRW_shader_create_3D_depth_only();
psl->depth_pass_hidden_wire = DRW_pass_create("Depth Pass Hidden Wire", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS | DRW_STATE_CULL_BACK);
depth_shgrp_hidden_wire = DRW_shgroup_create(depth_sh, psl->depth_pass_hidden_wire);
if (!do_zbufclip) {
psl->edit_face_overlay_pass = edit_mesh_create_overlay_pass(&face_overlay_shgrp, &ledges_overlay_shgrp, &lverts_overlay_shgrp,
&facedot_overlay_shgrp, &face_mod, DRW_STATE_DEPTH_LESS | DRW_STATE_WRITE_DEPTH | DRW_STATE_BLEND);
}
else {
/* We render all wires with depth and opaque to a new fbo and blend the result based on depth values */
psl->edit_face_occluded_pass = edit_mesh_create_overlay_pass(&face_occluded_shgrp, &ledges_occluded_shgrp, &lverts_occluded_shgrp,
&facedot_occluded_shgrp, &zero, DRW_STATE_DEPTH_LESS | DRW_STATE_WRITE_DEPTH);
/* however we loose the front faces value (because we need the depth of occluded wires and
* faces are alpha blended ) so we recover them in a new pass. */
psl->facefill_occlude_pass = DRW_pass_create("Front Face Color", DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_LESS);
facefill_occluded_shgrp = DRW_shgroup_create(overlay_facefill_sh, psl->facefill_occlude_pass);
DRW_shgroup_uniform_block(facefill_occluded_shgrp, "globalsBlock", globals_ubo, 0);
/* we need a full screen pass to combine the result */
EDIT_MESH_TextureList *txl = DRW_mode_texture_list_get();
DefaultTextureList *dtxl = DRW_engine_texture_list_get();
struct Batch *quad = DRW_cache_fullscreen_quad_get();
static float mat[4][4]; /* not even used but avoid crash */
psl->mix_occlude_pass = DRW_pass_create("Mix Occluded Wires", DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND);
DRWShadingGroup *mix_shgrp = DRW_shgroup_create(overlay_mix_sh, psl->mix_occlude_pass);
DRW_shgroup_call_add(mix_shgrp, quad, mat);
DRW_shgroup_uniform_float(mix_shgrp, "alpha", &backwire_opacity, 1);
DRW_shgroup_uniform_buffer(mix_shgrp, "wireColor", &txl->occlude_wire_color_tx, 0);
DRW_shgroup_uniform_buffer(mix_shgrp, "faceColor", &txl->occlude_face_color_tx, 1);
DRW_shgroup_uniform_buffer(mix_shgrp, "wireDepth", &txl->occlude_wire_depth_tx, 2);
DRW_shgroup_uniform_buffer(mix_shgrp, "sceneDepth", &dtxl->depth, 3);
}
DRW_mode_passes_setup(NULL,
NULL,
&psl->wire_outline_pass,
&psl->non_meshes_pass,
&psl->ob_center_pass,
NULL,
NULL);
}
static void edit_mesh_add_ob_to_pass(Scene *scene, Object *ob, DRWShadingGroup *face_shgrp, DRWShadingGroup *ledges_shgrp,
DRWShadingGroup *lverts_shgrp, DRWShadingGroup *facedot_shgrp, DRWShadingGroup *facefill_shgrp)
{
struct Batch *geo_ovl_tris, *geo_ovl_ledges, *geo_ovl_lverts, *geo_ovl_fcenter;
ToolSettings *ts = scene->toolsettings;
DRW_cache_wire_overlay_get(ob, &geo_ovl_tris, &geo_ovl_ledges, &geo_ovl_lverts);
DRW_shgroup_call_add(face_shgrp, geo_ovl_tris, ob->obmat);
DRW_shgroup_call_add(ledges_shgrp, geo_ovl_ledges, ob->obmat);
if (facefill_shgrp)
DRW_shgroup_call_add(facefill_shgrp, geo_ovl_tris, ob->obmat);
if ((ts->selectmode & SCE_SELECT_VERTEX) != 0)
DRW_shgroup_call_add(lverts_shgrp, geo_ovl_lverts, ob->obmat);
if ((ts->selectmode & SCE_SELECT_FACE) != 0) {
geo_ovl_fcenter = DRW_cache_face_centers_get(ob);
DRW_shgroup_call_add(facedot_shgrp, geo_ovl_fcenter, ob->obmat);
}
}
void EDIT_MESH_cache_populate(Object *ob)
{
const struct bContext *C = DRW_get_context();
View3D *v3d = CTX_wm_view3d(C);
Scene *scene = CTX_data_scene(C);
Object *obedit = scene->obedit;
struct Batch *geom;
CollectionEngineSettings *ces_mode_ed = BKE_object_collection_engine_get(ob, COLLECTION_MODE_EDIT, "");
bool do_occlude_wire = BKE_collection_engine_property_value_get_bool(ces_mode_ed, "show_occlude_wire");
backwire_opacity = BKE_collection_engine_property_value_get_float(ces_mode_ed, "backwire_opacity"); /* should be done only once */
face_mod = (do_occlude_wire) ? 0.0f : 1.0f;
switch (ob->type) {
case OB_MESH:
if (ob == obedit) {
if (do_occlude_wire) {
geom = DRW_cache_surface_get(ob);
DRW_shgroup_call_add(depth_shgrp_hidden_wire, geom, ob->obmat);
}
if ((v3d->flag & V3D_ZBUF_SELECT) == 0) {
edit_mesh_add_ob_to_pass(scene, ob, face_occluded_shgrp, ledges_occluded_shgrp,
lverts_occluded_shgrp, facedot_occluded_shgrp, facefill_occluded_shgrp);
}
else {
edit_mesh_add_ob_to_pass(scene, ob, face_overlay_shgrp, ledges_overlay_shgrp,
lverts_overlay_shgrp, facedot_overlay_shgrp, NULL);
}
}
break;
case OB_LAMP:
DRW_shgroup_lamp(ob);
break;
case OB_CAMERA:
case OB_EMPTY:
DRW_shgroup_empty(ob);
break;
case OB_SPEAKER:
DRW_shgroup_speaker(ob);
break;
case OB_ARMATURE:
DRW_shgroup_armature_object(ob);
break;
default:
break;
}
DRW_shgroup_object_center(ob);
DRW_shgroup_relationship_lines(ob);
}
void EDIT_MESH_cache_finish(void)
{
/* Do nothing */
}
void EDIT_MESH_draw(void)
{
EDIT_MESH_PassList *psl = DRW_mode_pass_list_get();
EDIT_MESH_FramebufferList *fbl = DRW_mode_framebuffer_list_get();
DefaultFramebufferList *dfbl = DRW_engine_framebuffer_list_get();
DefaultTextureList *dtxl = DRW_engine_texture_list_get();
DRW_draw_pass(psl->depth_pass_hidden_wire);
if (psl->edit_face_occluded_pass) {
float clearcol[4] = {0.0f, 0.0f, 0.0f, 0.0f};
/* render facefill */
DRW_framebuffer_texture_detach(dtxl->depth);
DRW_framebuffer_texture_attach(fbl->occlude_face_fb, dtxl->depth, 0);
DRW_framebuffer_bind(fbl->occlude_face_fb);
DRW_framebuffer_clear(true, false, clearcol);
DRW_draw_pass(psl->facefill_occlude_pass);
DRW_framebuffer_texture_detach(dtxl->depth);
/* Render wires on a separate framebuffer */
DRW_framebuffer_bind(fbl->occlude_wire_fb);
DRW_framebuffer_clear(true, true, clearcol);
DRW_draw_pass(psl->edit_face_occluded_pass);
/* Combine with scene buffer */
DRW_framebuffer_bind(dfbl->default_fb);
DRW_draw_pass(psl->mix_occlude_pass);
DRW_framebuffer_texture_attach(dfbl->default_fb, dtxl->depth, 0);
}
else {
DRW_draw_pass(psl->edit_face_overlay_pass);
}
DRW_draw_pass(psl->wire_outline_pass);
DRW_draw_pass(psl->non_meshes_pass);
DRW_draw_pass(psl->ob_center_pass);
}
void EDIT_MESH_collection_settings_create(CollectionEngineSettings *ces)
{
BLI_assert(ces);
BKE_collection_engine_property_add_int(ces, "show_occlude_wire", false);
BKE_collection_engine_property_add_float(ces, "backwire_opacity", 0.5);
}
void EDIT_MESH_engine_free(void)
{
if (overlay_tri_sh)
DRW_shader_free(overlay_tri_sh);
if (overlay_tri_fast_sh)
DRW_shader_free(overlay_tri_fast_sh);
if (overlay_tri_vcol_sh)
DRW_shader_free(overlay_tri_vcol_sh);
if (overlay_tri_vcol_fast_sh)
DRW_shader_free(overlay_tri_vcol_fast_sh);
if (overlay_edge_sh)
DRW_shader_free(overlay_edge_sh);
if (overlay_edge_vcol_sh)
DRW_shader_free(overlay_edge_vcol_sh);
if (overlay_vert_sh)
DRW_shader_free(overlay_vert_sh);
if (overlay_facedot_sh)
DRW_shader_free(overlay_facedot_sh);
if (overlay_mix_sh)
DRW_shader_free(overlay_mix_sh);
if (overlay_facefill_sh)
DRW_shader_free(overlay_facefill_sh);
}
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