X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=glwidget.cpp;h=bf537de2dbdb0806d2c41fec0b8ebf3fcd74d8e7;hb=ec67a4b205b93f3d260470485949b29abac6ad21;hp=574bf61a6b3e116fa219a5df1245fddb780f37e2;hpb=86520183fc1bb7aafb65b766e6f31b722c77a640;p=nageru

diff --git a/glwidget.cpp b/glwidget.cpp
index 574bf61..bf537de 100644
--- a/glwidget.cpp
+++ b/glwidget.cpp
@@ -152,11 +152,12 @@ void GLWidget::paintGL()
 	}
 
 	if (should_grab) {
-		QRgb reference_color = grabFrameBuffer().pixel(grab_x, grab_y);
+		GLfloat reference_color[4];
+		glReadPixels(grab_x, current_height - grab_y - 1, 1, 1, GL_BGRA, GL_FLOAT, reference_color);
 
-		double r = srgb_to_linear(qRed(reference_color) / 255.0);
-		double g = srgb_to_linear(qGreen(reference_color) / 255.0);
-		double b = srgb_to_linear(qBlue(reference_color) / 255.0);
+		double r = srgb_to_linear(reference_color[2]);
+		double g = srgb_to_linear(reference_color[1]);
+		double b = srgb_to_linear(reference_color[0]);
 		global_mixer->set_wb(grab_output, r, g, b);
 		should_grab = false;
 	}