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/*
* 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.
*
* Copyright 2021, Blender Foundation.
*/
/** \file
* \ingroup draw_engine
*/
#include "BKE_paint.h"
#include "DRW_render.h"
#include "ED_view3d.h"
#include "PIL_time.h"
#include "UI_resources.h"
#include "overlay_private.h"
void OVERLAY_mode_transfer_cache_init(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
OVERLAY_PrivateData *pd = vedata->stl->pd;
pd->mode_transfer.time = PIL_check_seconds_timer();
for (int i = 0; i < 2; i++) {
/* Non Meshes Pass (Camera, empties, lights ...) */
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_BLEND_ALPHA;
DRW_PASS_CREATE(psl->mode_transfer_ps[i], state | pd->clipping_state);
}
}
#define MODE_TRANSFER_FLASH_LENGTH 0.55f
/* TODO(pablodp606): Remove this option for 3.0 if fade in/out is not used. */
#define MODE_TRANSFER_FLASH_FADE 0.0f
#define MODE_TRANSFER_FLASH_MAX_ALPHA 0.25f
static bool mode_transfer_is_animation_running(const float anim_time)
{
return anim_time >= 0.0f && anim_time <= MODE_TRANSFER_FLASH_LENGTH;
}
static float mode_transfer_alpha_for_animation_time_get(const float anim_time)
{
if (anim_time > MODE_TRANSFER_FLASH_LENGTH) {
return 0.0f;
}
if (anim_time < 0.0f) {
return 0.0f;
}
if (MODE_TRANSFER_FLASH_FADE <= 0.0f) {
return (1.0f - (anim_time / MODE_TRANSFER_FLASH_LENGTH)) * MODE_TRANSFER_FLASH_MAX_ALPHA;
}
const float flash_fade_in_time = MODE_TRANSFER_FLASH_LENGTH * MODE_TRANSFER_FLASH_FADE;
const float flash_fade_out_time = MODE_TRANSFER_FLASH_LENGTH - flash_fade_in_time;
float alpha = 0.0f;
if (anim_time < flash_fade_in_time) {
alpha = anim_time / flash_fade_in_time;
}
else {
const float fade_out_anim_time = anim_time - flash_fade_in_time;
alpha = 1.0f - (fade_out_anim_time / flash_fade_out_time);
}
return alpha * MODE_TRANSFER_FLASH_MAX_ALPHA;
}
void OVERLAY_mode_transfer_cache_populate(OVERLAY_Data *vedata, Object *ob)
{
OVERLAY_PrivateData *pd = vedata->stl->pd;
OVERLAY_PassList *psl = vedata->psl;
if (pd->xray_enabled) {
return;
}
const float animation_time = pd->mode_transfer.time -
ob->runtime.overlay_mode_transfer_start_time;
if (!mode_transfer_is_animation_running(animation_time)) {
return;
}
const DRWContextState *draw_ctx = DRW_context_state_get();
const bool use_sculpt_pbvh = BKE_sculptsession_use_pbvh_draw(ob, draw_ctx->v3d) &&
!DRW_state_is_image_render();
const bool is_xray = (ob->dtx & OB_DRAW_IN_FRONT) != 0;
DRWShadingGroup *mode_transfer_grp[2];
for (int i = 0; i < 2; i++) {
GPUShader *sh = OVERLAY_shader_uniform_color();
mode_transfer_grp[i] = DRW_shgroup_create(sh, psl->mode_transfer_ps[i]);
DRW_shgroup_uniform_block(mode_transfer_grp[i], "globalsBlock", G_draw.block_ubo);
float color[4];
UI_GetThemeColor3fv(TH_VERTEX_SELECT, color);
color[3] = mode_transfer_alpha_for_animation_time_get(animation_time);
srgb_to_linearrgb_v4(color, color);
DRW_shgroup_uniform_vec4_copy(mode_transfer_grp[i], "color", color);
}
if (!pd->use_in_front) {
mode_transfer_grp[IN_FRONT] = mode_transfer_grp[NOT_IN_FRONT];
}
pd->mode_transfer.any_animated = true;
if (use_sculpt_pbvh) {
DRW_shgroup_call_sculpt(mode_transfer_grp[is_xray], ob, false, false);
}
else {
struct GPUBatch *geom = DRW_cache_object_surface_get(ob);
if (geom) {
DRW_shgroup_call(mode_transfer_grp[is_xray], geom, ob);
}
}
}
void OVERLAY_mode_transfer_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
DRW_draw_pass(psl->mode_transfer_ps[NOT_IN_FRONT]);
}
void OVERLAY_mode_transfer_infront_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
DRW_draw_pass(psl->mode_transfer_ps[IN_FRONT]);
}
void OVERLAY_mode_transfer_cache_finish(OVERLAY_Data *vedata)
{
OVERLAY_PrivateData *pd = vedata->stl->pd;
if (pd->mode_transfer.any_animated) {
DRW_viewport_request_redraw();
}
pd->mode_transfer.any_animated = false;
}
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