shader_literals.hpp

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#pragma once
#ifndef OGLPLUS_OPT_SHADER_LITERALS_HPP
#define OGLPLUS_OPT_SHADER_LITERALS_HPP

#include <oglplus/config/compiler.hpp>
#include <oglplus/shader.hpp>

#if !OGLPLUS_NO_USER_DEFINED_LITERALS

namespace oglplus {
namespace aux {

inline Shader ShaderFromLiteral(
    ShaderType shader_type,
    const char* lit,
    size_t size
)
{
    Shader shader(shader_type);
    shader.Source(StrCRef(lit, size));
    shader.Compile();
    return shader;
}

} // namespace aux

#ifdef GL_VERTEX_SHADER
inline Shader operator "" _glsl_vs(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::Vertex, str, size);
}
#endif

#ifdef GL_TESS_CONTROL_SHADER
inline Shader operator "" _glsl_tcs(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::TessControl, str, size);
}
#endif

#ifdef GL_TESS_EVALUATION_SHADER
inline Shader operator "" _glsl_tes(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::TessEvaluation, str, size);
}
#endif

#ifdef GL_GEOMETRY_SHADER
inline Shader operator "" _glsl_gs(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::Geometry, str, size);
}
#endif

#ifdef GL_FRAGMENT_SHADER
inline Shader operator "" _glsl_fs(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::Fragment, str, size);
}
#endif

#ifdef GL_COMPUTE_SHADER
inline Shader operator "" _glsl_cs(const char* str, size_t size)
{
    return aux::ShaderFromLiteral(ShaderType::Compute, str, size);
}
#endif

} // namespace oglplus

#else
#error "User-defined literals are required!"
#endif // OGLPLUS_NO_USER_DEFINED_LITERALS

#endif // include guard