Function convert_sRGB

Chapter_20/program.cpp:45–58

NOTE: This function only applies gamma.

// NOTE: This function only applies gamma.
uint32_t convert_sRGB(vec3 color) {
	float r = color.x, g = color.y, b = color.z;
	r = min(max(r, 0.0), 1.0);
	g = min(max(g, 0.0), 1.0);
	b = min(max(b, 0.0), 1.0);
	// TODO: Is this correct? Validate
	r = powf(r, 1.0f/2.2f);
	g = powf(g, 1.0f/2.2f);
	b = powf(b, 1.0f/2.2f);
	uint8_t rb = floor(r * 255.0f);
	uint8_t gb = floor(g * 255.0f);
	uint8_t bb = floor(b * 255.0f);
	return 0xFF000000|(bb<<16)|(gb<<8)|rb;
}

inline vec3 camera_direction(float2 uv, int w, int h, float fov_horizontal_degrees) {
	float aspect = float(h) / float(w);