From 10e04a8eba30f667d2d05e49100318fc2c945cde Mon Sep 17 00:00:00 2001
From: Rafostar <40623528+Rafostar@users.noreply.github.com>
Date: Tue, 22 Dec 2020 15:17:47 +0100
Subject: [PATCH] Flatpak: fix distorted gstreamer-vaapi colors with GLX on AMD
 #10

---
 ...er-vaapi-glx-select-8-bit-color-size.patch | 83 +++++++++++++++++++
 .../gstreamer-1.0/gstreamer-vaapi.json        |  4 +
 2 files changed, 87 insertions(+)
 create mode 100644 pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi-glx-select-8-bit-color-size.patch

diff --git a/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi-glx-select-8-bit-color-size.patch b/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi-glx-select-8-bit-color-size.patch
new file mode 100644
index 00000000..5648cad9
--- /dev/null
+++ b/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi-glx-select-8-bit-color-size.patch
@@ -0,0 +1,83 @@
+From 65fc08032a41ae8779d1845dce2c00b1efa2955c Mon Sep 17 00:00:00 2001
+From: Rafostar <rafostar.github@gmail.com>
+Date: Tue, 22 Dec 2020 15:08:21 +0100
+Subject: [PATCH] glx: Iterate over FBConfig and select 8 bit color size
+
+---
+ gst-libs/gst/vaapi/gstvaapiutils_glx.c | 40 ++++++++++++++++++++++++--
+ 1 file changed, 38 insertions(+), 2 deletions(-)
+
+diff --git a/gst-libs/gst/vaapi/gstvaapiutils_glx.c b/gst-libs/gst/vaapi/gstvaapiutils_glx.c
+index ccd7832b..f73106c2 100644
+--- a/gst-libs/gst/vaapi/gstvaapiutils_glx.c
++++ b/gst-libs/gst/vaapi/gstvaapiutils_glx.c
+@@ -301,9 +301,17 @@ gl_create_context (Display * dpy, int screen, GLContextState * parent)
+     GLX_RED_SIZE, 8,
+     GLX_GREEN_SIZE, 8,
+     GLX_BLUE_SIZE, 8,
++    GLX_ALPHA_SIZE, 8,
+     None
+   };
+ 
++  const GLint rgba_colors[4] = {
++    GLX_RED_SIZE,
++    GLX_GREEN_SIZE,
++    GLX_BLUE_SIZE,
++    GLX_ALPHA_SIZE
++  };
++
+   cs = malloc (sizeof (*cs));
+   if (!cs)
+     goto error;
+@@ -333,11 +341,38 @@ gl_create_context (Display * dpy, int screen, GLContextState * parent)
+     if (!fbconfigs)
+       goto error;
+ 
+-    /* Find out a GLXFBConfig compatible with the parent context */
++    /* Find out a 8 bit GLXFBConfig compatible with the parent context */
+     for (n = 0; n < n_fbconfigs; n++) {
++      gboolean sizes_correct = FALSE;
++      int cn;
++
+       status = glXGetFBConfigAttrib (parent->display,
+           fbconfigs[n], GLX_FBCONFIG_ID, &val);
+-      if (status == Success && val == fbconfig_id)
++      if (status != Success)
++        goto error;
++      if (val != fbconfig_id)
++        continue;
++
++      /* Iterate over RGBA sizes in fbconfig */
++      for (cn = 0; cn < 4; cn++) {
++        int size = 0;
++
++        status = glXGetFBConfigAttrib (parent->display,
++            fbconfigs[n], rgba_colors[cn], &size);
++        if (status != Success)
++          goto error;
++
++        /* Last check is for alpha
++         * and alpha is optional */
++        if (cn == 3) {
++          if (size == 0 || size == 8) {
++            sizes_correct = TRUE;
++            break;
++          }
++        } else if (size != 8)
++          break;
++      }
++      if (sizes_correct)
+         break;
+     }
+     if (n == n_fbconfigs)
+@@ -809,6 +844,7 @@ gl_create_pixmap_object (Display * dpy, guint width, guint height)
+     GLX_RED_SIZE, 8,
+     GLX_GREEN_SIZE, 8,
+     GLX_BLUE_SIZE, 8,
++    GLX_ALPHA_SIZE, 8,
+     GL_NONE,
+   };
+ 
+-- 
+2.28.0
+
diff --git a/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi.json b/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi.json
index 4b4d5e1a..3603e04f 100644
--- a/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi.json
+++ b/pkgs/flatpak/gstreamer-1.0/gstreamer-vaapi.json
@@ -12,6 +12,10 @@
             "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer-vaapi.git",
             "tag": "1.18.1",
             "commit": "f9e925af3645439f7b7a4580700fcd6ce17fc1c9"
+        },
+        {
+            "type": "patch",
+            "path": "gstreamer-vaapi-glx-select-8-bit-color-size.patch"
         }
     ]
 }