Duckstation/src/frontend-common/postprocessing_shader.h

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#pragma once
#include "common/rectangle.h"
#include "core/types.h"
#include <array>
#include <string>
#include <string_view>
#include <vector>
namespace FrontendCommon {
class PostProcessingShader
{
public:
enum : u32
{
PUSH_CONSTANT_SIZE_THRESHOLD = 128
};
struct Option
{
enum : u32
{
MAX_VECTOR_COMPONENTS = 4
};
enum class Type
{
Invalid,
Bool,
Int,
Float
};
union Value
{
s32 int_value;
float float_value;
};
static_assert(sizeof(Value) == sizeof(u32));
using ValueVector = std::array<Value, MAX_VECTOR_COMPONENTS>;
static_assert(sizeof(ValueVector) == sizeof(u32) * MAX_VECTOR_COMPONENTS);
std::string name;
std::string ui_name;
std::string dependent_option;
Type type;
u32 vector_size;
ValueVector default_value;
ValueVector min_value;
ValueVector max_value;
ValueVector step_value;
ValueVector value;
};
PostProcessingShader();
PostProcessingShader(std::string name, std::string code);
PostProcessingShader(const PostProcessingShader& copy);
PostProcessingShader(PostProcessingShader& move);
~PostProcessingShader();
PostProcessingShader& operator=(const PostProcessingShader& copy);
PostProcessingShader& operator=(PostProcessingShader& move);
ALWAYS_INLINE const std::string& GetName() const { return m_name; }
ALWAYS_INLINE const std::string& GetCode() const { return m_code; }
ALWAYS_INLINE const std::vector<Option>& GetOptions() const { return m_options; }
ALWAYS_INLINE std::vector<Option>& GetOptions() { return m_options; }
ALWAYS_INLINE bool HasOptions() const { return !m_options.empty(); }
bool IsValid() const;
const Option* GetOptionByName(const std::string_view& name) const;
Option* GetOptionByName(const std::string_view& name);
std::string GetConfigString() const;
void SetConfigString(const std::string_view& str);
bool LoadFromFile(std::string name, const char* filename);
bool UsePushConstants() const;
u32 GetUniformsSize() const;
void FillUniformBuffer(void* buffer, u32 texture_width, s32 texture_height, s32 texture_view_x, s32 texture_view_y,
s32 texture_view_width, s32 texture_view_height, u32 window_width, u32 window_height,
float time) const;
private:
struct CommonUniforms
{
float src_rect[4];
float src_size[2];
float resolution[2];
float rcp_resolution[2];
float window_resolution[2];
float rcp_window_resolution[2];
float time;
float padding[1];
};
void LoadOptions();
std::string m_name;
std::string m_code;
std::vector<Option> m_options;
};
} // namespace FrontendCommon