New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/drape/shader.cpp

@@ -0,0 +1,40 @@
+#include "drape/shader.hpp"
+#include "drape/gl_functions.hpp"
+
+#include "base/assert.hpp"
+
+namespace dp
+{
+namespace
+{
+glConst ConvertType(Shader::Type t)
+{
+  if (t == Shader::Type::VertexShader)
+    return gl_const::GLVertexShader;
+
+  return gl_const::GLFragmentShader;
+}
+}  // namespace
+
+Shader::Shader(std::string const & shaderName, std::string const & shaderSource,
+               std::string const & defines, Type type)
+  : m_shaderName(shaderName)
+  , m_glID(0)
+{
+  m_glID = GLFunctions::glCreateShader(ConvertType(type));
+  GLFunctions::glShaderSource(m_glID, shaderSource, defines);
+  std::string errorLog;
+  bool const result = GLFunctions::glCompileShader(m_glID, errorLog);
+  CHECK(result, (m_shaderName, "> Shader compile error : ", errorLog));
+}
+
+Shader::~Shader()
+{
+  GLFunctions::glDeleteShader(m_glID);
+}
+
+uint32_t Shader::GetID() const
+{
+  return m_glID;
+}
+}  // namespace dp