Function sdf_create_tex

StereoKitC/utils/sdf.cpp:66–80

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tex_t sdf_create_tex(int32_t width, int32_t height, float (*sdf)(vec2 pt), float scale) {
	color32 *data     = sk_malloc_t(color32, width * height);
	float    center_x = width  / 2.0f - 0.5f;
	float    center_y = height / 2.0f - 0.5f;
	for (int32_t y = 0; y < height; y++) {
		int32_t yoff = y * width;
		for (int32_t x = 0; x < width; x++) {
			float dist = sdf({ x - center_x, y - center_y });
			float lerp = 1-math_saturate(dist * scale);

			data[x + yoff] = {255,255,255,(uint8_t)(lerp * 255)};
		}
	}
	return tex_create_color32(data, width, height, false);
}

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