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#pragma once
#ifndef DOXYGEN_GENERATING_OUTPUT
#define NCINE_INCLUDE_OPENGL
#include "../../CommonHeaders.h"
#endif
#include "../../../Main.h"
namespace nCine
{
/// Stores information about an active OpenGL shader uniform
/*! Its only purpose is to initialize a `GLUniformCache` class. */
class GLUniform
{
friend class GLUniformBlock;
public:
static constexpr std::uint32_t MaxNameLength = 48;
GLUniform();
GLUniform(GLuint program, GLuint index);
inline GLuint GetIndex() const {
return index_;
}
inline GLint GetBlockIndex() const {
return blockIndex_;
}
inline GLint GetLocation() const {
return location_;
}
inline GLint GetSize() const {
return size_;
}
inline GLenum GetType() const {
return type_;
}
inline GLint GetOffset() const {
return offset_;
}
inline const char* GetName() const {
return name_;
}
GLenum GetBasicType() const;
std::uint32_t GetComponentCount() const;
inline std::uint32_t GetMemorySize() const {
return GetSize() * GetComponentCount() * sizeof(GetBasicType());
}
/// Returns true if the uniform name starts with `gl_`
bool HasReservedPrefix() const;
private:
GLuint index_;
/// Active uniforms not in a block have a block index of -1
GLint blockIndex_;
GLint location_;
GLint size_;
GLenum type_;
GLint offset_;
char name_[MaxNameLength];
};
}
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