97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
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#include "backend/Shader.hpp"
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#include <iostream>
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#include <glm/gtc/type_ptr.hpp>
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#include <glad/glad.h>
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#define IMPLEMENT_UNIFORM_FUNCTION(type, func) \
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inline
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AbstractShader::AbstractShader(const std::string& vertexShader, const std::string& fragmentShader) :
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id(0)
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{
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GLint success;
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GLchar infoLog[512];
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GLuint vertexShaderID = glCreateShader(GL_VERTEX_SHADER);
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const char* vertexShaderSource = vertexShader.c_str();
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glShaderSource(vertexShaderID, 1, &vertexShaderSource, NULL);
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glCompileShader(vertexShaderID);
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glGetShaderiv(vertexShaderID, GL_COMPILE_STATUS, &success);
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if (!success)
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{
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glGetShaderInfoLog(vertexShaderID, 512, NULL, infoLog);
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std::cerr << "Vertex shader creation failed: \n" << infoLog << std::endl;
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glDeleteShader(vertexShaderID);
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return;
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}
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GLuint fragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
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const char* fragmentShaderSource = fragmentShader.c_str();
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glShaderSource(fragmentShaderID, 1, &fragmentShaderSource, NULL);
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glCompileShader(fragmentShaderID);
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glGetShaderiv(fragmentShaderID, GL_COMPILE_STATUS, &success);
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if (!success)
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{
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glGetShaderInfoLog(fragmentShaderID, 512, NULL, infoLog);
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std::cerr << "Fragment shader creation failed: \n" << infoLog << std::endl;
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glDeleteShader(fragmentShaderID);
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glDeleteShader(vertexShaderID);
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return;
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}
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id = glCreateProgram();
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glAttachShader(id, vertexShaderID);
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glAttachShader(id, fragmentShaderID);
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glLinkProgram(id);
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glGetProgramiv(id, GL_LINK_STATUS, &success);
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if (!success)
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{
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glGetProgramInfoLog(fragmentShaderID, 512, NULL, infoLog);
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std::cerr << "Shader program linking failed: \n" << infoLog << std::endl;
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glDeleteShader(fragmentShaderID);
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glDeleteShader(vertexShaderID);
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id = 0;
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return;
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}
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glDeleteShader(fragmentShaderID);
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glDeleteShader(vertexShaderID);
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}
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AbstractShader::~AbstractShader()
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{
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glDeleteProgram(id);
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}
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void AbstractShader::Use()
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{
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glUseProgram(id);
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}
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void AbstractShader::SetUniform(const std::string& name, const glm::mat4& value)
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{
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GLint location = glGetUniformLocation(id, name.c_str());
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if (location == -1)
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return;
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glUniformMatrix4fv(location, 1, GL_FALSE, glm::value_ptr(value));
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}
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void AbstractShader::SetUniform(const std::string& name, const glm::vec4& value)
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{
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GLint location = glGetUniformLocation(id, name.c_str());
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if (location == -1)
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return;
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glUniform4fv(location, 1, glm::value_ptr(value));
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}
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