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#pragma once
#ifndef DOXYGEN_GENERATING_OUTPUT
#define NCINE_INCLUDE_OPENGL
#include "../../CommonHeaders.h"
#endif
#include "../../../Main.h"
#include <Containers/StringView.h>
using namespace Death::Containers;
namespace nCine
{
/// Handles OpenGL shader objects
class GLShader
{
public:
enum class Status
{
NotCompiled,
CompilationFailed,
Compiled,
CompiledWithDeferredChecks
};
enum class ErrorChecking
{
Immediate,
Deferred
};
explicit GLShader(GLenum type);
GLShader(GLenum type, StringView filename);
~GLShader();
GLShader(const GLShader&) = delete;
GLShader& operator=(const GLShader&) = delete;
inline GLuint GetGLHandle() const {
return glHandle_;
}
inline Status GetStatus() const {
return status_;
}
/// Loads a shader from the given string
bool LoadFromString(StringView string);
/// Loads a shader from the given string and then append the specified file
bool LoadFromStringAndFile(StringView string, StringView filename);
/// Loads a shader by concatenating the given strings in order
bool LoadFromStrings(ArrayView<const StringView> strings);
/// Loads a shader by concatenating the given strings in order, then appending the specified file
bool LoadFromStringsAndFile(ArrayView<const StringView> strings, StringView filename);
/// Loads a shader from the specified file
bool LoadFromFile(StringView filename);
bool Compile(ErrorChecking errorChecking, bool logOnErrors);
bool CheckCompilation(bool logOnErrors);
void SetObjectLabel(StringView label);
private:
static constexpr std::uint32_t MaxShaderSourceLength = 32 * 1024;
GLuint glHandle_;
Status status_;
};
}
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