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//-------------------------------------
// Main:
//-------------------------------------
#include "Errors/Errors.h"
#include "Shader/Shader.h"
#include "Overload/Overload.h"
int main()
{
Shader shader("Source/Shader/GL.shader");
}
//-------------------------------------
//-------------------------------------
// Overload.h:
//-------------------------------------
#pragma once
#include "Shader/Shader.h"
#include "Errors/Errors.h"
typedef void (Shader::*type5) (string_pair&, const char*);
void GLCheck(type5, Shader*, string_pair&, const char*);
//-------------------------------------
//-------------------------------------
// Overload.cpp:
//-------------------------------------
#include "Overload.h"
void GLCheck(type5 function, Shader* object, string_pair& shaders, const char* filepath)
{
GLClearErrors();
(object->*function) (shaders, filepath);
GLCheckErrors(NAMEOF(function), __FILE__, __LINE__);
}
//-------------------------------------
//-------------------------------------
// Shader.h:
//-------------------------------------
typedef std::pair<std::string, std::string> string_pair;
class Shader
{
// members...
void ParseAlternate(string_pair&, const char*);
// other member functions...
public:
Shader(const char*);
// other member functions...
};
//-------------------------------------
//-------------------------------------
// Shader.cpp:
//-------------------------------------
#include "Shader.h"
#include "Overload/Overload.h"
void Shader::ParseAlternate(string_pair& shaders, const char* filepath)
{
enum WhichShader { NoShader, VertexShader, FragmentShader };
WhichShader shader_type{ NoShader };
std::ifstream file;
std::string line;
file.open(filepath);
if (!file.is_open())
{
std::cout << "Error opening file at: " << filepath << std::endl;
__debugbreak();
}
while (std::getline(file, line, '\n')) // reads from file and outputs data into line
{
if (line.find("#vertex") != std::string::npos)
{
shader_type = WhichShader::VertexShader;
continue;
}
else if (line.find("#fragment") != std::string::npos)
{
shader_type = WhichShader::FragmentShader;
continue;
}
if (shader_type == WhichShader::VertexShader)
shaders.first += line + '\n';
else if (shader_type == WhichShader::FragmentShader)
shaders.second += line + '\n';
}
}
Shader::Shader(const char* filepath)
: m_ProgramID(0), m_UniformLocationCache()
{
string_pair Shaders;
// Create shaders:
unsigned int VertexShader = GLCheck(&Shader::CreateShader, this, GL_VERTEX_SHADER);
unsigned int FragmentShader = GLCheck(&Shader::CreateShader, this, GL_FRAGMENT_SHADER);
GLCheck(&Shader::ParseAlternate, this, Shaders, filepath);
// Compile shaders:
// Create program:
// Attach shaders:
// Link program:
// Detach shaders:
// Validate program:
}
//-------------------------------------
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