opengl.h
author František Kučera <franta-hg@frantovo.cz>
Sun, 03 Dec 2023 19:22:25 +0100
branchv_0
changeset 17 f53a040bdc89
parent 6 fd93a46db15b
permissions -rw-r--r--
new shader: scanlines-basic.frag
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/**
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 * ShaderShark
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 * Copyright © 2023 František Kučera (Frantovo.cz, GlobalCode.info)
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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 General Public License as published by
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 * the Free Software Foundation, version 3 of the License.
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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, see <http://www.gnu.org/licenses/>.
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 */
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#pragma once
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#include <iostream>
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#include <string>
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#include <stdexcept>
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#include <epoxy/gl.h>
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#include <epoxy/glx.h>
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#include <GL/glu.h>
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#include <glm/glm.hpp>
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#include <glm/ext.hpp>
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#include "Shader.h"
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inline
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void quads(GLfloat tx, GLfloat ty, GLfloat x, GLfloat y, GLfloat z) {
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	glTexCoord2f(tx, ty);
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	glVertex3f(x, y, z);
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}
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inline
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void checkError(std::ostream* out = nullptr) {
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	GLenum code = glGetError();
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	if (code == GL_NO_ERROR) {
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		if (out) *out << "GL check: OK" << std::endl;
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	} else {
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		const char* string = (const char*) gluErrorString(code);
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		if (out) *out << "GL check: " << string << std::endl;
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		else throw std::logic_error(std::string("GL error: ") + string);
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	}
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}
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inline
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void dump(const char* name, const glm::vec3& value) {
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	std::cerr << "dump: " << name << " = ["
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			<< value.x << ", "
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			<< value.y << ", "
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			<< value.z << "]" << std::endl;
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}