select_debug_engine.cc

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/* SPDX-FileCopyrightText: 2019 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#include "DNA_ID.h"
#include "DNA_vec_types.h"
 
#include "DRW_engine.hh"
#include "DRW_select_buffer.hh"
 
#include "draw_cache.hh"
#include "draw_manager_c.hh"
 
#include "select_engine.hh"
 
#define SELECT_DEBUG_ENGINE "SELECT_DEBUG_ENGINE"
 
/* -------------------------------------------------------------------- */
struct SELECTIDDEBUG_PassList {
  struct DRWPass *debug_pass;
};
 
struct SELECTIDDEBUG_Data {
  void *engine_type;
  DRWViewportEmptyList *fbl;
  DRWViewportEmptyList *txl;
  SELECTIDDEBUG_PassList *psl;
  DRWViewportEmptyList *stl;
};
 
static struct {
  struct GPUShader *select_debug_sh;
} e_data = {{nullptr}}; /* Engine data */
 
/* -------------------------------------------------------------------- */
static void select_debug_engine_init(void *vedata)
{
  SELECTIDDEBUG_PassList *psl = ((SELECTIDDEBUG_Data *)vedata)->psl;
 
  if (!e_data.select_debug_sh) {
    e_data.select_debug_sh = GPU_shader_create_from_info_name("select_debug_fullscreen");
  }
 
  psl->debug_pass = DRW_pass_create("Debug Pass", DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_ALPHA);
  GPUTexture *texture_u32 = DRW_engine_select_texture_get();
  if (texture_u32) {
    DRWShadingGroup *shgrp = DRW_shgroup_create(e_data.select_debug_sh, psl->debug_pass);
    DRW_shgroup_uniform_texture(shgrp, "image", texture_u32);
    DRW_shgroup_call_procedural_triangles(shgrp, nullptr, 1);
  }
}
 
static void select_debug_draw_scene(void *vedata)
{
  SELECTIDDEBUG_PassList *psl = ((SELECTIDDEBUG_Data *)vedata)->psl;
  DRW_draw_pass(psl->debug_pass);
}
 
static void select_debug_engine_free(void)
{
  DRW_SHADER_FREE_SAFE(e_data.select_debug_sh);
}
 
/* -------------------------------------------------------------------- */
static const DrawEngineDataSize select_debug_data_size = DRW_VIEWPORT_DATA_SIZE(
    SELECTIDDEBUG_Data);
 
DrawEngineType draw_engine_debug_select_type = {
    /*next*/ nullptr,
    /*prev*/ nullptr,
    /*idname*/ N_("Select ID Debug"),
    /*vedata_size*/ &select_debug_data_size,
    /*engine_init*/ &select_debug_engine_init,
    /*engine_free*/ &select_debug_engine_free,
    /*instance_free*/ nullptr,
    /*cache_init*/ nullptr,
    /*cache_populate*/ nullptr,
    /*cache_finish*/ nullptr,
    /*draw_scene*/ &select_debug_draw_scene,
    /*view_update*/ nullptr,
    /*id_update*/ nullptr,
    /*render_to_image*/ nullptr,
    /*store_metadata*/ nullptr,
};
 
#undef SELECT_DEBUG_ENGINE