96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Gem-graph OpenGL experiments
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*
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* Desc: OpenGL utils header
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*
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* Copyright (C) 2023 Arthur Menges <arthur.menges@a-lec.org>
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* Copyright (C) 2023 Adrien Bourmault <neox@a-lec.org>
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* Copyright (C) 2023 Jean Sirmai <jean@a-lec.org>
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*
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* This file is part of Gem-graph.
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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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*/
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#pragma once
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#include <unistd.h>
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#include <stdbool.h>
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#include <GL/glu.h>
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/*
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* Structure describing a gl_area and its parameters, used to create a table
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* of Gem-graph client current gl_areas
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*/
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struct gl_area_entry {
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char name[16];
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GLuint vao; // init_buffers
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GLuint position_buffer; // shutdown, draw
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GLuint color_buffer; // shutdown, draw
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GLuint program; // shutdown, init_shaders, draw
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GLuint m; // init_shaders, draw
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GLuint v; // init_shaders, draw
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GLuint p; // init_shaders, draw
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// GLuint line_indices_nb; // now : graphics.c > int buffer_lines_ndx
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// GLuint plan_indices_nb; // now : graphics.c > int buffer_plans_ndx
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};
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/*
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* Initializes a gl_area
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*
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* @param gl_area, ptr to the gl_area widget
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*
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* @return true if initialized
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*/
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bool graphics_init(const char *gl_area);
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/*
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* Draws the current buffer to a gl_area
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*
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* @param gl_area, ptr to the gl_area widget
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*
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* @return void
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*/
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void graphics_draw(const void *gl_area);
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/*
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* Shutdowns a gl_area
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*
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* @param gl_area, ptr to the gl_area widget
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*
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* @return true if success
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*/
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bool graphics_shutdown(const void *gl_area);
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/*
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* Initializes the shaders of a gl_area and link them to a program
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*
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* @param gl_area, ptr to the gl_area widget
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*
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*
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* @return true if initialized
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*/
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bool graphics_init_shaders(const void *gl_area);
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/*
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* Initializes the buffer of a gl_area
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*
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* @param gl_area, ptr to the gl_area widget
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*
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* Note : indices[] is defined in graphics_cube.h
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*
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* @return void
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*/
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void graphics_init_buffers(const void *gl_area);
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