144 lines
3.6 KiB
C++
144 lines
3.6 KiB
C++
// Copyright (C) 2022 RozK
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef _RK_ENGINE_RENDER_OPENGLES_H
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#define _RK_ENGINE_RENDER_OPENGLES_H
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#include "../render.hpp"
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#include "render_context.hpp"
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#include <GLES3/gl32.h>
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#include <GLES3/gl3ext.h>
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#include <GLES3/gl3platform.h>
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enum : rk_uint {
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RK_VERTICES_BINDING = 0,
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RK_PARAMS_BINDING = 1
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};
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struct rk_uniforms {
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GLint view;
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GLint view_km;
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GLint projection;
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};
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struct rk_shader {
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GLuint vertex;
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GLuint fragment;
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GLuint program;
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rk_uniforms uniforms;
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};
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struct rk_texture {
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rk_uint slot;
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rk_uint nlevels;
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GLint sampler;
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GLuint texture;
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};
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struct rk_triangles {
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rk_uint size;
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GLuint array;
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GLuint vertices;
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};
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struct rk_vertices {
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rk_uint vertex_size;
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rk_uint layout;
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GLuint array;
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GLuint vertices;
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GLuint indices;
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};
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struct rk_command {
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GLuint count;
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GLuint ninstances;
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GLuint base_index;
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GLint base_vertex;
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GLuint base_instance;
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};
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struct rk_batch {
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rk_uint size;
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rk_batch_translation_format translation_format;
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rk_batch_orientation_format orientation_format;
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rk_uint params_size;
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rk_ushort * indices;
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rk_ubyte * params;
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rk_command * commands;
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GLuint params_buffer;
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GLuint commands_buffer;
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};
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struct rk_translation_float {
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rk_vec3 xyz;
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float l;
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inline void set(rk_vec3 const & translation, rk_ushort const texlevel) {
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xyz = translation;
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l = static_cast<float>(texlevel);
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}
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};
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struct rk_translation_short {
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rk_short x;
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rk_short y;
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rk_short z;
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rk_ushort l;
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inline void set(rk_vec3 const & translation, rk_ushort const texlevel) {
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x = static_cast<rk_short>(translation.x);
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y = static_cast<rk_short>(translation.y);
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z = static_cast<rk_short>(translation.z);
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l = texlevel;
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}
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};
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struct rk_orientation_float {
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rk_vec3 xyz;
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inline void set(rk_vec3 const & orientation) {
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xyz = orientation;
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}
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};
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struct rk_orientation_int10 {
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rk_uint xyz;
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inline void set(rk_vec3 const & orientation) {
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#define _pack_10(x) static_cast<rk_uint>(static_cast<rk_int>((x) * ((x) < 0.f ? 512.f : 511.f)) & 1023)
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xyz = _pack_10(orientation.x) << 20 | _pack_10(orientation.y) << 10 | _pack_10(orientation.z);
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#undef _pack_10
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}
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};
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template < typename _translation_t, typename _orientation_t >
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struct rk_params {
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_translation_t translation;
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_orientation_t orientation;
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inline void set(rk_vec3 const & translation, rk_ushort const texlevel, rk_vec3 const & orientation) {
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this->translation.set(translation, texlevel);
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this->orientation.set(orientation);
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}
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};
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typedef rk_params<rk_translation_float, rk_orientation_float> rk_params_float_float;
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typedef rk_params<rk_translation_float, rk_orientation_int10> rk_params_float_int10;
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typedef rk_params<rk_translation_short, rk_orientation_float> rk_params_short_float;
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typedef rk_params<rk_translation_short, rk_orientation_int10> rk_params_short_int10;
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#endif // _RK_ENGINE_RENDER_OPENGLES_H
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