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Shader.h
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Shader.h
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#pragma once
#include "GL/glew.h"
#include "textfile.h"
#include "nvVector.h"
#include "nvMatrix.h"
#include <vector>
#include <string>
#include <unordered_map>
using namespace std;
using namespace nv;
class Shader
{
protected:
vector<GLuint> texIDs;
unsigned maxTexUnit;
unordered_map<string, GLuint> progName2progID;
string currentProgName;
public:
void init();
bool createProgram(const string& progName, const vector<string>& vertFileNameList, const vector<string>& fragFileNameList);
bool createProgram(const string& progName, const string& vertFileName, const string& fragFileName)
{
return createProgram(progName, vector<string>(1, vertFileName), vector<string>(1, fragFileName));
}
bool useProgram(const string& progName);
bool deleteProgram(const string& progName);
void setUniform(const string& progName, const string& varName, const int v);
void setUniform(const string& progName, const string& varName, const float v);
void setUniform(const string& progName, const string& varName, const vec2f& v);
void setUniform(const string& progName, const string& varName, const vec3f& v);
void setUniform(const string& progName, const string& varName, const vec4f& v);
void setUniform(const string& progName, const string& varName, const matrix4<float>& v);
void setUniform(const string& varName, const int v) { setUniform(currentProgName, varName, v); }
void setUniform(const string& varName, const float v) { setUniform(currentProgName, varName, v); }
void setUniform(const string& varName, const vec2f& v) { setUniform(currentProgName, varName, v); }
void setUniform(const string& varName, const vec3f& v) { setUniform(currentProgName, varName, v); }
void setUniform(const string& varName, const vec4f& v) { setUniform(currentProgName, varName, v); }
void setUniform(const string& varName, const matrix4<float>& v) { setUniform(currentProgName, varName, v); }
void setTexArray1D(const string& varName, const vector<vec4f>& tex);
void setTexArray2D(const string& varName, const vector<vec4f>& tex, int width = 1);
void setTexArray2D(const string& varName, const vector<vector<vec4f>>& tex);
void deleteLastTexture()
{
if(texIDs.size())
{
glDeleteTextures(1, &texIDs.back());
texIDs.pop_back();
maxTexUnit--;
}
}
void clearTextures()
{
glDeleteTextures(texIDs.size(), texIDs.data());
texIDs.clear();
maxTexUnit = 0;
}
~Shader(void);
};