From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 13 Dec 2015 12:12:44 +0000 (+0200)
Subject: Simplify some formulas a bit
X-Git-Url: http://git.tdb.fi/?p=geometrycompositor.git;a=commitdiff_plain;h=574302ed0fced0d57233c4517d414b4c3e875d7d

Simplify some formulas a bit
---

diff --git a/source/main.c b/source/main.c
index 08be9dd..1cabcf6 100644
--- a/source/main.c
+++ b/source/main.c
@@ -1072,7 +1072,7 @@ void refresh_screen(Compositor *compositor, CompositedScreen *screen)
 		glBindTexture(GL_TEXTURE_2D, window->texture);
 		compositor->glXBindTexImageEXT(compositor->display, window->glx_pixmap, GLX_FRONT_LEFT_EXT, NULL);
 		glUniform4f(screen->geometry_loc,
-			(float)window->x/screen->width, ((float)screen->height-window->y-window->height)/screen->height,
+			(float)window->x/screen->width, 1.0f-(float)(window->y+window->height)/screen->height,
 			(float)(window->width+2*window->border)/screen->width, (float)(window->height+2*window->border)/screen->height);
 		glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 		compositor->glXReleaseTexImageEXT(compositor->display, window->glx_pixmap, GLX_FRONT_LEFT_EXT);
@@ -1093,7 +1093,7 @@ void refresh_screen(Compositor *compositor, CompositedScreen *screen)
 			continue;
 
 		glUniform4f(screen->geometry_loc,
-			(float)monitor->x/screen->width, ((float)screen->height-monitor->y-monitor->height)/screen->height,
+			(float)monitor->x/screen->width, 1.0f-(float)(monitor->y+monitor->height)/screen->height,
 			(float)monitor->width/screen->width, (float)monitor->height/screen->height);
 
 		glBindVertexArray(monitor->vertex_array);