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// This file is part of the 64k demo project.
// It defines the interface for procedural texture generation.
// Used to generate texture data at runtime.
#pragma once
#include <cstdint>
// Procedural generation function signature
// buffer: Pointer to RGBA8 buffer (size w * h * 4)
// w, h: Dimensions
// params: Arbitrary float parameters for the generator
// Returns true on success, false on failure.
typedef bool (*ProcGenFunc)(uint8_t* buffer, int w, int h, const float* params,
int num_params);
namespace procedural {
// Simple noise generator
bool gen_noise(uint8_t* buffer, int w, int h, const float* params,
int num_params);
// Perlin noise generator
// Params[0]: Seed
// Params[1]: Frequency (Scale)
// Params[2]: Amplitude
// Params[3]: Amplitude decay (e.g. 0.5)
// Params[4]: Number of octaves (int)
bool gen_perlin(uint8_t* buffer, int w, int h, const float* params,
int num_params);
// Example: Grid pattern
bool gen_grid(uint8_t* buffer, int w, int h, const float* params,
int num_params);
// Post-process: Make texture periodic by blending edges
// Params[0]: Border size ratio (0.0 - 0.5), default 0.1
bool make_periodic(uint8_t* buffer, int w, int h, const float* params,
int num_params);
#if !defined(DEMO_STRIP_ALL)
// Test-only: 256x256 noise generator
bool gen_noise_256(uint8_t* buffer, int w, int h, const float* params,
int num_params);
// Test-only: Failing generator
bool gen_fail(uint8_t* buffer, int w, int h, const float* params,
int num_params);
#endif
} // namespace procedural
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