feat(p_cube.hpp): add vertice & indice length

src/core/shader.cpp

@@ -0,0 +1,86 @@
+#include "core/shader.hpp"
+
+#include <iostream>
+
+Shader::Shader() : shaderProgramID(0), vertexShaderID(0), fragmentShaderID(0) {}
+
+void Shader::compile(const char* vertexSource, const char* fragmentSource)
+{
+  if (this->shaderProgramID != 0) glDeleteProgram(this->shaderProgramID);
+
+  this->vertexShaderID = glCreateShader(GL_VERTEX_SHADER);
+  this->fragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
+  this->shaderProgramID = glCreateProgram();
+
+  this->addVertShader(vertexSource);
+  this->addFragShader(fragmentSource);
+
+  this->compileInProgram();
+}
+
+void Shader::addVertShader(const char* vertexSource)
+{
+  glShaderSource(this->vertexShaderID, 1, &vertexSource, nullptr);
+  glCompileShader(this->vertexShaderID);
+
+  GLint success;
+  glGetShaderiv(this->vertexShaderID, GL_COMPILE_STATUS, &success);
+  if (!success)
+  {
+    GLchar infoLog[1024];
+    glGetShaderInfoLog(this->vertexShaderID, 1024, nullptr, infoLog);
+
+    std::cerr << "ERROR(SHADER): VERTEX COMPILATION FAILED (ID "
+              << this->vertexShaderID << ")\n"
+              << infoLog << std::endl;
+  }
+}
+
+void Shader::addFragShader(const char* fragmentSource)
+{
+  glShaderSource(this->fragmentShaderID, 1, &fragmentSource, nullptr);
+  glCompileShader(this->fragmentShaderID);
+
+  GLint success;
+  glGetShaderiv(this->fragmentShaderID, GL_COMPILE_STATUS, &success);
+  if (!success)
+  {
+    GLchar infoLog[1024];
+    glGetShaderInfoLog(this->fragmentShaderID, 1024, nullptr, infoLog);
+
+    std::cerr << "ERROR(SHADER): FRAGMENT COMPILATION FAILED (ID "
+              << this->fragmentShaderID << ")\n"
+              << infoLog << std::endl;
+  }
+}
+
+void Shader::compileInProgram()
+{
+  glAttachShader(this->shaderProgramID, this->vertexShaderID);
+  glAttachShader(this->shaderProgramID, this->fragmentShaderID);
+  glLinkProgram(this->shaderProgramID);
+
+  GLint success;
+  glGetProgramiv(this->shaderProgramID, GL_LINK_STATUS, &success);
+  if (!success)
+  {
+    GLchar infoLog[1024];
+    glGetProgramInfoLog(this->shaderProgramID, 1024, nullptr, infoLog);
+
+    std::cerr << "ERROR(SHADER): LINKING FAILED (Program ID "
+              << this->shaderProgramID << ")\n"
+              << infoLog << std::endl;
+  }
+
+  glDetachShader(this->shaderProgramID, this->vertexShaderID);
+  glDetachShader(this->shaderProgramID, this->fragmentShaderID);
+
+  glDeleteShader(this->vertexShaderID);
+  glDeleteShader(this->fragmentShaderID);
+}
+
+Shader::~Shader() { glDeleteProgram(this->shaderProgramID); }
+
+void Shader::use() const { glUseProgram(this->shaderProgramID); }
+
+GLuint Shader::getShaderProgramID() const { return this->shaderProgramID; }