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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2014 Blender Foundation.
* All rights reserved.
*
* Contributor(s): Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file manipulator_draw_utils.c
* \ingroup wm
*/
#include "BLI_listbase.h"
#include "BLI_ghash.h"
#include "BLI_math.h"
#include "BLI_string.h"
#include "BLI_string_utils.h"
#include "BKE_context.h"
#include "ED_screen.h"
#include "ED_view3d.h"
#include "GPU_batch.h"
#include "GPU_glew.h"
#include "GPU_immediate.h"
#include "MEM_guardedalloc.h"
#include "RNA_access.h"
#include "WM_api.h"
#include "WM_types.h"
/* only for own init/exit calls (wm_manipulatortype_init/wm_manipulatortype_free) */
#include "wm.h"
/* own includes */
#include "manipulator_library_intern.h"
/**
* Main draw call for ManipulatorGeomInfo data
*/
void wm_manipulator_geometryinfo_draw(const ManipulatorGeomInfo *info, const bool select, const float color[4])
{
/* TODO store the Batches inside the ManipulatorGeomInfo and updated it when geom changes
* So we don't need to re-created and discard it every time */
const bool use_lighting = true || (!select && ((U.manipulator_flag & USER_MANIPULATOR_SHADED) != 0));
Gwn_VertBuf *vbo;
Gwn_IndexBuf *el;
Gwn_Batch *batch;
Gwn_IndexBufBuilder elb = {0};
Gwn_VertFormat format = {0};
uint pos_id = GWN_vertformat_attr_add(&format, "pos", GWN_COMP_F32, 3, GWN_FETCH_FLOAT);
uint nor_id;
if (use_lighting) {
nor_id = GWN_vertformat_attr_add(&format, "nor", GWN_COMP_I16, 3, GWN_FETCH_INT_TO_FLOAT_UNIT);
}
/* Elements */
GWN_indexbuf_init(&elb, GWN_PRIM_TRIS, info->ntris, info->nverts);
for (int i = 0; i < info->ntris; ++i) {
const unsigned short *idx = &info->indices[i * 3];
GWN_indexbuf_add_tri_verts(&elb, idx[0], idx[1], idx[2]);
}
el = GWN_indexbuf_build(&elb);
vbo = GWN_vertbuf_create_with_format(&format);
GWN_vertbuf_data_alloc(vbo, info->nverts);
GWN_vertbuf_attr_fill(vbo, pos_id, info->verts);
if (use_lighting) {
/* Normals are expected to be smooth. */
GWN_vertbuf_attr_fill(vbo, nor_id, info->normals);
}
batch = GWN_batch_create_ex(GWN_PRIM_TRIS, vbo, el, GWN_BATCH_OWNS_VBO | GWN_BATCH_OWNS_INDEX);
GWN_batch_program_set_builtin(batch, GPU_SHADER_3D_UNIFORM_COLOR);
GWN_batch_uniform_4fv(batch, "color", color);
/* We may want to re-visit this, for now disable
* since it causes issues leaving the GL state modified. */
#if 0
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
#endif
GWN_batch_draw(batch);
#if 0
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
#endif
GWN_batch_discard(batch);
}
void wm_manipulator_vec_draw(
const float color[4], const float (*verts)[3], uint vert_count,
uint pos, uint primitive_type)
{
immUniformColor4fv(color);
immBegin(primitive_type, vert_count);
for (int i = 0; i < vert_count; i++) {
immVertex3fv(pos, verts[i]);
}
immEnd();
}
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