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#pragma once
#include "glGrib/OpenGL.h"
#include "glGrib/Options.h"
#include <string>
#include <glm/glm.hpp>
namespace glGrib
{
class Program
{
public:
static void clearCache ();
static Program * load (const std::string &);
void set (const std::string & key, bool b)
{
set (key, b ? 1 : 0);
}
void set (const std::string & key, const OptionColor & color)
{
set (key, float (color.r) / 255.0f, float (color.g) / 255.0f,
float (color.b) / 255.0f, float (color.a) / 255.0f);
}
void set (const std::string & key, float val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform1f (id, val);
}
void set (const std::string & key, double val)
{
set (key, float (val));
}
void set (const std::string & key, const std::vector<float> & val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform1fv (id, val.size (), val.data ());
}
void set (const std::string & key, const std::vector<glm::vec4> & val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform4fv (id, val.size (), &val[0][0]);
}
void set (const std::string & key, const std::vector<int> & val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform1iv (id, val.size (), val.data ());
}
void set (const std::string & key, long int val)
{
set (key, int (val));
}
void set (const std::string & key, size_t val)
{
set (key, int (val));
}
void set (const std::string & key, int val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform1i (id, val);
}
void set (const std::string & key, const glm::vec3 & val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform3f (id, val.x, val.y, val.z);
}
void set (const std::string & key, float x, float y, float z)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform3f (id, x, y, z);
}
void set (const std::string & key, const glm::vec4 & val)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform4f (id, val.x, val.y, val.z, val.w);
}
void set (const std::string & key, float x, float y, float z, float w)
{
int id = getUniformLocation (key);
if (id != -1)
glUniform4f (id, x, y, z, w);
}
void set (const std::string & key, const glm::mat4 & mat)
{
int id = getUniformLocation (key);
if (id != -1)
glUniformMatrix4fv (id, 1, GL_FALSE, &mat[0][0]);
}
void set (const std::string & key, const glm::mat3 & mat)
{
int id = getUniformLocation (key);
if (id != -1)
glUniformMatrix3fv (id, 1, GL_FALSE, &mat[0][0]);
}
void set (const OptionsLight &);
void compile ();
virtual ~Program ();
void use () const;
void read (const std::string &);
GLint getAttributeLocation (const std::string & name) const
{
return glGetAttribLocation (programID, name.c_str ());
}
GLuint getId ()
{
return programID;
}
Program () {}
private:
explicit Program (const std::string & fsc, const std::string & vsc, const std::string & gsc)
: FragmentShaderCode (fsc), VertexShaderCode (vsc), GeometryShaderCode (gsc) { }
explicit Program (const std::string & fsc, const std::string & vsc)
: FragmentShaderCode (fsc), VertexShaderCode (vsc), GeometryShaderCode ("") { }
std::string FragmentShaderCode;
std::string VertexShaderCode;
std::string GeometryShaderCode;
GLuint programID;
bool loaded = false;
mutable bool active = false;
std::map<std::string,int> uniformLocationCache;
bool hasUniform (const std::string & key) const
{
return uniformLocationCache.find (key) != uniformLocationCache.end ();
}
int getUniformLocation (const std::string & key)
{
auto it = uniformLocationCache.find (key);
if (it != uniformLocationCache.end ())
return it->second;
int id = glGetUniformLocation (programID, key.c_str ());
uniformLocationCache.insert (std::pair<std::string,int> (key, id));
return id;
}
std::string name;
};
}
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