92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2018 SuperTuxKart-Team
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#ifndef HEADER_SP_INSTANCED_DATA_HPP
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#define HEADER_SP_INSTANCED_DATA_HPP
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#include "utils/mini_glm.hpp"
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#include "utils/vec3.hpp"
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#include <cassert>
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#include <matrix4.h>
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using namespace irr;
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namespace SP
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{
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class SPInstancedData
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{
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private:
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char m_data[44];
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public:
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// ------------------------------------------------------------------------
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SPInstancedData()
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{
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memset(m_data, 0, 44);
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}
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// ------------------------------------------------------------------------
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SPInstancedData(const core::matrix4& model_mat,
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float texture_trans_x, float texture_trans_y, float hue,
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short skinning_offset)
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{
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using namespace MiniGLM;
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float position[3] = { model_mat[12], model_mat[13], model_mat[14] };
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core::quaternion rotation(0.0f, 0.0f, 0.0f, 1.0f);
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core::vector3df scale = model_mat.getScale();
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if (scale.X != 0.0f && scale.Y != 0.0f && scale.Z != 0.0f)
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{
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core::matrix4 local_mat = model_mat;
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local_mat[0] = local_mat[0] / scale.X / local_mat[15];
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local_mat[1] = local_mat[1] / scale.X / local_mat[15];
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local_mat[2] = local_mat[2] / scale.X / local_mat[15];
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local_mat[4] = local_mat[4] / scale.Y / local_mat[15];
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local_mat[5] = local_mat[5] / scale.Y / local_mat[15];
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local_mat[6] = local_mat[6] / scale.Y / local_mat[15];
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local_mat[8] = local_mat[8] / scale.Z / local_mat[15];
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local_mat[9] = local_mat[9] / scale.Z / local_mat[15];
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local_mat[10] = local_mat[10] / scale.Z / local_mat[15];
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rotation = getQuaternion(local_mat);
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// Conjugated quaternion in glsl
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rotation.W = -rotation.W;
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}
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memcpy(m_data, position, 12);
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memcpy(m_data + 12, &rotation, 16);
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short s[4] = { toFloat16(scale.X), toFloat16(scale.Y),
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toFloat16(scale.Z), 0 };
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memcpy(m_data + 28, s, 8);
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short tm[2] =
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{
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short(texture_trans_x * 32767.0f),
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short(texture_trans_y * 32767.0f)
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};
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memcpy(m_data + 36, tm, 4);
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memcpy(m_data + 40, &skinning_offset, 2);
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short hue_packed = short(core::clamp(int(hue * 100.0f), 0, 100));
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memcpy(m_data + 42, &hue_packed, 2);
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}
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// ------------------------------------------------------------------------
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const void* getData() const { return m_data; }
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};
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}
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#endif
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