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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/paint_vertex_mode.c
* \ingroup draw
*/
#include "DRW_engine.h"
#include "DRW_render.h"
/* If builtin shaders are needed */
#include "GPU_shader.h"
#include "draw_common.h"
#include "draw_mode_engines.h"
#include "DNA_mesh_types.h"
#include "DNA_view3d_types.h"
#include "DEG_depsgraph_query.h"
extern struct GPUUniformBuffer *globals_ubo; /* draw_common.c */
extern struct GlobalsUboStorage ts; /* draw_common.c */
extern char datatoc_paint_vertex_vert_glsl[];
extern char datatoc_paint_vertex_frag_glsl[];
extern char datatoc_paint_wire_vert_glsl[];
extern char datatoc_paint_wire_frag_glsl[];
extern char datatoc_common_globals_lib_glsl[];
/* *********** LISTS *********** */
typedef struct PAINT_VERTEX_PassList {
struct DRWPass *vcolor_faces;
struct DRWPass *wire_overlay;
struct DRWPass *face_overlay;
} PAINT_VERTEX_PassList;
typedef struct PAINT_VERTEX_StorageList {
struct PAINT_VERTEX_PrivateData *g_data;
} PAINT_VERTEX_StorageList;
typedef struct PAINT_VERTEX_Data {
void *engine_type; /* Required */
DRWViewportEmptyList *fbl;
DRWViewportEmptyList *txl;
PAINT_VERTEX_PassList *psl;
PAINT_VERTEX_StorageList *stl;
} PAINT_VERTEX_Data;
/* *********** STATIC *********** */
static struct {
struct GPUShader *vcolor_face_shader;
struct GPUShader *wire_overlay_shader;
struct GPUShader *face_overlay_shader;
} e_data = {NULL}; /* Engine data */
typedef struct PAINT_VERTEX_PrivateData {
DRWShadingGroup *fvcolor_shgrp;
DRWShadingGroup *lwire_shgrp;
DRWShadingGroup *face_shgrp;
} PAINT_VERTEX_PrivateData; /* Transient data */
/* *********** FUNCTIONS *********** */
static void PAINT_VERTEX_engine_init(void *UNUSED(vedata))
{
if (!e_data.vcolor_face_shader) {
e_data.vcolor_face_shader = DRW_shader_create(
datatoc_paint_vertex_vert_glsl, NULL,
datatoc_paint_vertex_frag_glsl, NULL);
e_data.wire_overlay_shader = DRW_shader_create_with_lib(
datatoc_paint_wire_vert_glsl, NULL,
datatoc_paint_wire_frag_glsl,
datatoc_common_globals_lib_glsl, "#define VERTEX_MODE\n");
e_data.face_overlay_shader = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR);
}
}
static void PAINT_VERTEX_cache_init(void *vedata)
{
PAINT_VERTEX_PassList *psl = ((PAINT_VERTEX_Data *)vedata)->psl;
PAINT_VERTEX_StorageList *stl = ((PAINT_VERTEX_Data *)vedata)->stl;
const DRWContextState *draw_ctx = DRW_context_state_get();
const View3D *v3d = draw_ctx->v3d;
if (!stl->g_data) {
/* Alloc transient pointers */
stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__);
}
{
/* Create a pass */
psl->vcolor_faces = DRW_pass_create(
"Vert Color Pass",
DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_BLEND);
stl->g_data->fvcolor_shgrp = DRW_shgroup_create(e_data.vcolor_face_shader, psl->vcolor_faces);
DRW_shgroup_uniform_float(stl->g_data->fvcolor_shgrp, "alpha", &v3d->overlay.vertex_paint_mode_opacity, 1);
}
{
psl->wire_overlay = DRW_pass_create(
"Wire Pass",
DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL);
stl->g_data->lwire_shgrp = DRW_shgroup_create(e_data.wire_overlay_shader, psl->wire_overlay);
DRW_shgroup_uniform_block(stl->g_data->lwire_shgrp, "globalsBlock", globals_ubo);
}
{
psl->face_overlay = DRW_pass_create(
"Face Mask Pass",
DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_BLEND);
stl->g_data->face_shgrp = DRW_shgroup_create(e_data.face_overlay_shader, psl->face_overlay);
static float col[4] = {1.0f, 1.0f, 1.0f, 0.2f};
DRW_shgroup_uniform_vec4(stl->g_data->face_shgrp, "color", col, 1);
}
}
static void PAINT_VERTEX_cache_populate(void *vedata, Object *ob)
{
PAINT_VERTEX_StorageList *stl = ((PAINT_VERTEX_Data *)vedata)->stl;
const DRWContextState *draw_ctx = DRW_context_state_get();
const View3D *v3d = draw_ctx->v3d;
if ((ob->type == OB_MESH) && (ob == draw_ctx->obact)) {
/* We're always painting on original, display original data. */
ob = DEG_get_original_object(ob);
const Mesh *me = ob->data;
const bool use_wire = (v3d->overlay.paint_flag & V3D_OVERLAY_PAINT_WIRE) != 0;
const bool use_surface = v3d->overlay.vertex_paint_mode_opacity != 0.0f;
const bool use_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0;
struct GPUBatch *geom;
if (use_surface) {
geom = DRW_cache_mesh_surface_vert_colors_get(ob);
DRW_shgroup_call_add(stl->g_data->fvcolor_shgrp, geom, ob->obmat);
}
if (use_face_sel || use_wire) {
geom = DRW_cache_mesh_edges_paint_overlay_get(ob, use_wire, use_face_sel);
DRW_shgroup_call_add(stl->g_data->lwire_shgrp, geom, ob->obmat);
}
if (use_face_sel) {
geom = DRW_cache_mesh_faces_weight_overlay_get(ob);
DRW_shgroup_call_add(stl->g_data->face_shgrp, geom, ob->obmat);
}
}
}
static void PAINT_VERTEX_draw_scene(void *vedata)
{
PAINT_VERTEX_PassList *psl = ((PAINT_VERTEX_Data *)vedata)->psl;
DRW_draw_pass(psl->vcolor_faces);
DRW_draw_pass(psl->face_overlay);
DRW_draw_pass(psl->wire_overlay);
}
static void PAINT_VERTEX_engine_free(void)
{
DRW_SHADER_FREE_SAFE(e_data.vcolor_face_shader);
DRW_SHADER_FREE_SAFE(e_data.wire_overlay_shader);
}
static const DrawEngineDataSize PAINT_VERTEX_data_size = DRW_VIEWPORT_DATA_SIZE(PAINT_VERTEX_Data);
DrawEngineType draw_engine_paint_vertex_type = {
NULL, NULL,
N_("PaintVertexMode"),
&PAINT_VERTEX_data_size,
&PAINT_VERTEX_engine_init,
&PAINT_VERTEX_engine_free,
&PAINT_VERTEX_cache_init,
&PAINT_VERTEX_cache_populate,
NULL,
NULL,
&PAINT_VERTEX_draw_scene,
NULL,
NULL,
};
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