1 files changed, 42 insertions, 18 deletions

diff --git a/core/io/image.cpp b/core/io/image.cpp
index 986c29b539..873eb66f33 100644
--- a/core/io/image.cpp
+++ b/core/io/image.cpp
@@ -2985,31 +2985,53 @@ void Image::set_pixel(int p_x, int p_y, const Color &p_color) {
 	_set_color_at_ofs(data.ptrw(), ofs, p_color);
 }
 
+void Image::adjust_bcs(float p_brightness, float p_contrast, float p_saturation) {
+	uint8_t *w = data.ptrw();
+	uint32_t pixel_size = get_format_pixel_size(format);
+	uint32_t pixel_count = data.size() / pixel_size;
+
+	for (uint32_t i = 0; i < pixel_count; i++) {
+		Color c = _get_color_at_ofs(w, i);
+		Vector3 rgb(c.r, c.g, c.b);
+
+		rgb *= p_brightness;
+		rgb = Vector3(0.5, 0.5, 0.5).lerp(rgb, p_contrast);
+		float center = (rgb.x + rgb.y + rgb.z) / 3.0;
+		rgb = Vector3(center, center, center).lerp(rgb, p_saturation);
+		c.r = rgb.x;
+		c.g = rgb.y;
+		c.b = rgb.z;
+		_set_color_at_ofs(w, i, c);
+	}
+}
+
 Image::UsedChannels Image::detect_used_channels(CompressSource p_source) {
 	ERR_FAIL_COND_V(data.size() == 0, USED_CHANNELS_RGBA);
 	ERR_FAIL_COND_V(is_compressed(), USED_CHANNELS_RGBA);
 	bool r = false, g = false, b = false, a = false, c = false;
 
-	for (int i = 0; i < width; i++) {
-		for (int j = 0; j < height; j++) {
-			Color col = get_pixel(i, j);
+	const uint8_t *data_ptr = data.ptr();
 
-			if (col.r > 0.001) {
-				r = true;
-			}
-			if (col.g > 0.001) {
-				g = true;
-			}
-			if (col.b > 0.001) {
-				b = true;
-			}
-			if (col.a < 0.999) {
-				a = true;
-			}
+	uint32_t data_total = width * height;
 
-			if (col.r != col.b || col.r != col.g || col.b != col.g) {
-				c = true;
-			}
+	for (uint32_t i = 0; i < data_total; i++) {
+		Color col = _get_color_at_ofs(data_ptr, i);
+
+		if (col.r > 0.001) {
+			r = true;
+		}
+		if (col.g > 0.001) {
+			g = true;
+		}
+		if (col.b > 0.001) {
+			b = true;
+		}
+		if (col.a < 0.999) {
+			a = true;
+		}
+
+		if (col.r != col.b || col.r != col.g || col.b != col.g) {
+			c = true;
 		}
 	}
 
@@ -3132,6 +3154,8 @@ void Image::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_pixelv", "point", "color"), &Image::set_pixelv);
 	ClassDB::bind_method(D_METHOD("set_pixel", "x", "y", "color"), &Image::set_pixel);
 
+	ClassDB::bind_method(D_METHOD("adjust_bcs", "brightness", "contrast", "saturation"), &Image::adjust_bcs);
+
 	ClassDB::bind_method(D_METHOD("load_png_from_buffer", "buffer"), &Image::load_png_from_buffer);
 	ClassDB::bind_method(D_METHOD("load_jpg_from_buffer", "buffer"), &Image::load_jpg_from_buffer);
 	ClassDB::bind_method(D_METHOD("load_webp_from_buffer", "buffer"), &Image::load_webp_from_buffer);