ui.h

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#pragma once
 
namespace eu::render
{
    struct FrameBuffer;
}
 
namespace eu::imgui
{
 
struct ImguiShaderProgram
{
    unsigned int program_handle = 0;
    int texture_attrib = 0;
    int projection_attrib = 0;
};
 
struct ImguiShaderCache
{
    ImguiShaderCache();
    ~ImguiShaderCache();
 
    ImguiShaderCache(const ImguiShaderCache&) = delete;
    ImguiShaderCache(ImguiShaderCache&&) = delete;
    ImguiShaderCache& operator=(const ImguiShaderCache&) = delete;
    ImguiShaderCache& operator=(ImguiShaderCache&&) = delete;
 
    ImguiShaderProgram linear_to_gamma_shader;
    ImguiShaderProgram depth_ortho_shader;
};
 
enum class ImageShader
{
    None,
    TonemapAndGamma,
    DepthOrtho
};
 
 
void imgui_text(const std::string& str);
void imgui_image(const char* name, const render::FrameBuffer& img, ImguiShaderCache* cache, ImageShader shader);
bool simple_gamma_slider(const char* label, float* gamma, float curve = 1.5f, float min_gamma = 1.6f, float max_gamma = 2.8f);
 
bool drag(const char* const label, v3* drag);
bool drag(const char* const label, Ypr* drag);
 
}