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#pragma once
#include "../../types.hpp"
#include "../../RenderBackend/OpenGL/DeviceMemory.hpp"
#include <string>
namespace amalgine
{
class Shader;
class ShaderProgram;
enum class AttributeType
{
NONE,
VEC2,
VEC3,
VEC4
};
AttributeType getAttributeTypeByName(const char *attributeName);
class ShaderGlobalVec
{
friend class Shader;
friend class ShaderGlobalVec3;
public:
ShaderGlobalVec() : attributeType(AttributeType::NONE) {}
const std::string& getName() const { return name; }
AttributeType getAttributeType() const { return attributeType; }
protected:
ShaderGlobalVec(const std::string &_name, AttributeType _attributeType) : name(_name), attributeType(_attributeType) {}
private:
std::string name;
AttributeType attributeType;
};
class ShaderGlobalVec3
{
friend class Shader;
public:
const std::string& getName() const { return globalVec.getName(); }
AttributeType getAttributeType() const { return globalVec.getAttributeType(); }
ShaderGlobalVec getVecObject() const { return globalVec; }
private:
ShaderGlobalVec3(const std::string &_name) : globalVec(_name, AttributeType::VEC3) {}
private:
ShaderGlobalVec globalVec;
};
class ShaderProgramGlobalVec3
{
friend class ShaderProgram;
public:
void set(f32 x = 0.0f, f32 y = 0.0f, f32 z = 0.0f);
private:
ShaderProgramGlobalVec3(ShaderProgram *_shaderProgram, i32 _uniformId) : shaderProgram(_shaderProgram), uniformId(_uniformId){}
private:
ShaderProgram *shaderProgram;
i32 uniformId;
};
class ShaderInputVec2
{
friend class Shader;
public:
const std::string& getName() const;
void setData(const DeviceMemory &data);
private:
ShaderInputVec2(Shader *_shader, i32 _attributeIndex) :
shader(_shader),
attributeIndex(_attributeIndex)
{
}
private:
Shader *shader;
i32 attributeIndex;
};
class ShaderVec4
{
public:
ShaderVec4(f32 x = 0.0f, f32 y = 0.0f, f32 z = 0.0f, f32 w = 0.0f)
{
result = "vec4(";
result += std::to_string(x);
result += ", ";
result += std::to_string(y);
result += ", ";
result += std::to_string(z);
result += ", ";
result += std::to_string(w);
result += ")";
}
ShaderVec4(const ShaderInputVec2 &vec2, f32 z = 0.0f, f32 w = 0.0f)
{
result = "vec4(";
result += vec2.getName();
result += ", ";
result += std::to_string(z);
result += ", ";
result += std::to_string(w);
result += ")";
}
ShaderVec4(const ShaderGlobalVec3 &vec3, f32 w = 0.0f)
{
result = "vec4(";
result += vec3.getName();
result += ", ";
result += std::to_string(w);
result += ")";
}
const std::string& getOutput() const
{
return result;
}
private:
std::string result;
};
class ShaderOutputVec4
{
friend class Shader;
public:
const std::string& getName() const;
void operator=(const ShaderVec4 &shaderVec4);
private:
ShaderOutputVec4(Shader *_shader, i32 _attributeIndex) :
shader(_shader),
attributeIndex(_attributeIndex)
{
}
private:
Shader *shader;
i32 attributeIndex;
};
}
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