Add project files.

2024-10-06 16:52:46 -04:00
parent 24060efbc2
commit 85bdd1b16b
7 changed files with 539 additions and 0 deletions
--- a/shader.h
+++ b/shader.h
@@ -0,0 +1,155 @@
+#pragma once
+#ifndef SHADER_H
+#define SHADER_H
+
+#include <glad/glad.h>
+
+#include <string>
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+class Shader
+{
+public:
+	unsigned int ID;
+
+	Shader(const char* vertexPath, const char* fragmentPath)
+	{
+		std::string vertexCode;
+		std::string fragmentCode;
+		std::ifstream vShaderFile;
+		std::ifstream fShaderFile;
+
+		vShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+		fShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+		try
+		{
+			vShaderFile.open(vertexPath);
+			fShaderFile.open(fragmentPath);
+			std::stringstream vShaderStream, fShaderStream;
+			vShaderStream << vShaderFile.rdbuf();
+			fShaderStream << fShaderFile.rdbuf();
+			vShaderFile.close();
+			fShaderFile.close();
+			vertexCode = vShaderStream.str();
+			fragmentCode = fShaderStream.str();
+		}
+		catch (std::ifstream::failure e)
+		{
+			std::cout << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ" << std::endl;
+		}
+		const char* vShaderCode = vertexCode.c_str();
+		const char* fShaderCode = fragmentCode.c_str();
+
+		unsigned int vertex, fragment;
+
+		vertex = glCreateShader(GL_VERTEX_SHADER);
+		glShaderSource(vertex, 1, &vShaderCode, NULL);
+		glCompileShader(vertex);
+		checkCompileErrors(vertex, "VERTEX");
+
+		fragment = glCreateShader(GL_FRAGMENT_SHADER);
+		glShaderSource(fragment, 1, &fShaderCode, NULL);
+		glCompileShader(fragment);
+		checkCompileErrors(fragment, "FRAGMENT");
+
+		ID = glCreateProgram();
+		glAttachShader(ID, vertex);
+		glAttachShader(ID, fragment);
+		glLinkProgram(ID);
+		checkCompileErrors(ID, "PROGRAM");
+
+		glDeleteShader(vertex);
+		glDeleteShader(fragment);
+	}
+	void use()
+	{
+		glUseProgram(ID);
+	}    
+	// utility uniform functions
+	// ------------------------------------------------------------------------
+	void setBool(const std::string& name, bool value) const
+	{
+		glUniform1i(glGetUniformLocation(ID, name.c_str()), (int)value);
+	}
+	// ------------------------------------------------------------------------
+	void setInt(const std::string& name, int value) const
+	{
+		glUniform1i(glGetUniformLocation(ID, name.c_str()), value);
+	}
+	// ------------------------------------------------------------------------
+	void setFloat(const std::string& name, float value) const
+	{
+		glUniform1f(glGetUniformLocation(ID, name.c_str()), value);
+	}
+	// ------------------------------------------------------------------------
+	void setVec2(const std::string& name, const glm::vec2& value) const
+	{
+		glUniform2fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec2(const std::string& name, float x, float y) const
+	{
+		glUniform2f(glGetUniformLocation(ID, name.c_str()), x, y);
+	}
+	// ------------------------------------------------------------------------
+	void setVec3(const std::string& name, const glm::vec3& value) const
+	{
+		glUniform3fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec3(const std::string& name, float x, float y, float z) const
+	{
+		glUniform3f(glGetUniformLocation(ID, name.c_str()), x, y, z);
+	}
+	// ------------------------------------------------------------------------
+	void setVec4(const std::string& name, const glm::vec4& value) const
+	{
+		glUniform4fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec4(const std::string& name, float x, float y, float z, float w) const
+	{
+		glUniform4f(glGetUniformLocation(ID, name.c_str()), x, y, z, w);
+	}
+	// ------------------------------------------------------------------------
+	void setMat2(const std::string& name, const glm::mat2& mat) const
+	{
+		glUniformMatrix2fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+	// ------------------------------------------------------------------------
+	void setMat3(const std::string& name, const glm::mat3& mat) const
+	{
+		glUniformMatrix3fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+	// ------------------------------------------------------------------------
+	void setMat4(const std::string& name, const glm::mat4& mat) const
+	{
+		glUniformMatrix4fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+
+private:
+	void checkCompileErrors(unsigned int shader, std::string type)
+	{
+		int success;
+		char infoLog[1024];
+		if (type != "PROGRAM")
+		{
+			glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+			if (!success)
+			{
+				glGetShaderInfoLog(shader, 1024, NULL, infoLog);
+				std::cout << "ERROR::SHADER_COMPILATION_ERROR of type: " << type << "\n" << infoLog << "\n -- ---------------------------------------------------- -- " << std::endl;
+			}
+		}
+		else
+		{
+			glGetProgramiv(shader, GL_LINK_STATUS, &success);
+			if (!success)
+			{
+				glGetProgramInfoLog(shader, 1024, NULL, infoLog);
+				std::cout << "ERROR::PROGRAM_LINKING_ERROR of type: " << type << "\n" << infoLog << "\n -- ---------------------------------------------------- -- " << std::endl;
+			}
+		}
+	}
+};
+
+#endif