From 41700d3cc77975a86af90853aaa2b3052517c5b1 Mon Sep 17 00:00:00 2001
From: Sebastian Wick <sebastian.wick@redhat.com>
Date: Wed, 31 Jul 2024 17:47:04 +0200
Subject: [PATCH] cogl/gl: Use internal formats without alpha for non-alpha
 Cogl formats

The formats COGL_PIXEL_FORMAT_RGB_888 and COGL_PIXEL_FORMAT_BGR_888 for
the gl driver were using internal formats with an alpha channel.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3914>
---
 cogl/cogl/driver/gl/gl/cogl-driver-gl.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cogl/cogl/driver/gl/gl/cogl-driver-gl.c b/cogl/cogl/driver/gl/gl/cogl-driver-gl.c
index 3bc20aab6..ef962ae2e 100644
--- a/cogl/cogl/driver/gl/gl/cogl-driver-gl.c
+++ b/cogl/cogl/driver/gl/gl/cogl-driver-gl.c
@@ -124,12 +124,12 @@ _cogl_driver_pixel_format_to_gl (CoglContext     *context,
       break;
 
     case COGL_PIXEL_FORMAT_RGB_888:
-      glintformat = GL_RGBA8;
+      glintformat = GL_RGB8;
       glformat = GL_RGB;
       gltype = GL_UNSIGNED_BYTE;
       break;
     case COGL_PIXEL_FORMAT_BGR_888:
-      glintformat = GL_RGBA8;
+      glintformat = GL_RGB8;
       glformat = GL_BGR;
       gltype = GL_UNSIGNED_BYTE;
       break;