From: Timm Bäder <mail@baedert.org>
Date: Mon, 16 Dec 2019 05:29:01 +0000 (+0100)
Subject: gl renderer: Initialize alpha uniform to 1.0
X-Git-Tag: archive/raspbian/4.4.1+ds1-2+rpi1~1^2~321^2^2~437
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=06f63764fbc279120778d3b29833626b74a7a234;p=gtk4.git

gl renderer: Initialize alpha uniform to 1.0

This makes gl-legacy work and gl-gles work except for text and icons.
---

diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index ee52e72c77..b64338a919 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -2791,6 +2791,16 @@ gsk_gl_renderer_create_programs (GskGLRenderer  *self,
   INIT_PROGRAM_UNIFORM_LOCATION (repeat, child_bounds);
   INIT_PROGRAM_UNIFORM_LOCATION (repeat, texture_rect);
 
+
+  /* We initialize the alpha uniform here, since the default value is important.
+   * We can't do it in the shader like a resonable person would because that doesn't
+   * work in gles. */
+  for (i = 0; i < GL_N_PROGRAMS; i++)
+    {
+      glUseProgram(self->programs[i].id);
+      glUniform1f (self->programs[i].alpha_location, 1.0);
+    }
+
 out:
   gsk_gl_shader_builder_finish (&shader_builder);