93 lines
1.7 KiB
C++
93 lines
1.7 KiB
C++
#ifndef __OPENGLPLAYGROUND_SHADERS_HH__
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#define __OPENGLPLAYGROUND_SHADERS_HH__
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#include <string>
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#include <unordered_map>
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#include <glbinding/gl/types.h>
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#include "common.hh"
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class ShaderException : public GLException {
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public:
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ShaderException(std::string const& msg);
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//~ShaderException() {}
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std::string const& getMsg() const {return _msg;}
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std::string toString() const override {
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return "ShaderException: " + _msg;
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}
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private:
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std::string _msg;
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};
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class Program;
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class Shader {
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public:
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Shader() : _shaderID(0) {
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}
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protected:
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Shader(std::string const& program, gl::GLenum type);
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public:
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virtual ~Shader();
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unsigned getID() const {
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return _shaderID;
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}
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protected:
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unsigned int _shaderID;
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};
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class VertexShader : public Shader {
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public:
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VertexShader(std::string const& program) : Shader(program, GL_VERTEX_SHADER) {
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}
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};
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class FragmentShader : public Shader {
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public:
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FragmentShader(std::string const& program) : Shader(program, GL_FRAGMENT_SHADER) {
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}
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};
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class GeometryShader : public Shader {
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public:
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GeometryShader(std::string const& program) : Shader(program, GL_GEOMETRY_SHADER) {
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}
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};
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class Program {
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public:
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Program(VertexShader& vertex, FragmentShader& frag);
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Program(GeometryShader& geom, VertexShader& vertex, FragmentShader& frag);
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~Program();
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void use() const;
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gl::GLint getUniformLocation(std::string const& name) const;
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gl::GLint getAttribLocation(std::string const& name) const;
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private:
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GeometryShader* _geom;
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VertexShader& _vertex;
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FragmentShader& _frag;
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unsigned _progID;
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mutable std::unordered_map<std::string, gl::GLint> _uniformLocCache, _attribLocCache;
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};
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#endif
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