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[minetest.git] / src / client / shadows / shadowsshadercallbacks.cpp
1 /*
2 Minetest
3 Copyright (C) 2021 Liso <anlismon@gmail.com>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 GNU Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include "client/shadows/shadowsshadercallbacks.h"
21
22 void ShadowDepthShaderCB::OnSetConstants(
23                 video::IMaterialRendererServices *services, s32 userData)
24 {
25         video::IVideoDriver *driver = services->getVideoDriver();
26
27         core::matrix4 lightMVP = driver->getTransform(video::ETS_PROJECTION);
28         lightMVP *= driver->getTransform(video::ETS_VIEW);
29
30         f32 cam_pos[4];
31         lightMVP.transformVect(cam_pos, CameraPos);
32
33         lightMVP *= driver->getTransform(video::ETS_WORLD);
34
35         m_light_mvp_setting.set(lightMVP.pointer(), services);
36         m_map_resolution_setting.set(&MapRes, services);
37         m_max_far_setting.set(&MaxFar, services);
38         s32 TextureId = 0;
39         m_color_map_sampler_setting.set(&TextureId, services);
40         f32 bias0 = PerspectiveBiasXY;
41         m_perspective_bias0.set(&bias0, services);
42         f32 bias1 = 1.0f - bias0 + 1e-5f;
43         m_perspective_bias1.set(&bias1, services);
44         f32 zbias = PerspectiveBiasZ;
45         m_perspective_zbias.set(&zbias, services);
46
47         m_cam_pos_setting.set(cam_pos, services);
48 }