fix: Add fix for black screen on intel in gamescope

spec_files/gamescope/gamescope.spec

@@ -11,6 +11,7 @@ URL:            https://github.com/ValveSoftware/gamescope
 # Create stb.pc to satisfy dependency('stb')
 Source1:        stb.pc
 Source2:        remove-720p-restrict.patch
+Source3:        intel.patch
 
 BuildRequires:  meson >= 0.54.0
 BuildRequires:  ninja-build
@@ -74,6 +75,7 @@ git submodule update --init --recursive
 mkdir -p pkgconfig
 cp %{SOURCE1} pkgconfig/stb.pc
 patch -Np1 < %{SOURCE2}
+patch -Np1 < %{SOURCE3}
 
 %build
 cd gamescope

spec_files/gamescope/intel.patch

@@ -0,0 +1,13 @@
+diff --git a/src/shaders/cs_composite_blit.comp b/src/shaders/cs_composite_blit.comp
+index 52bd9d517..359ee3a19 100644
+--- a/src/shaders/cs_composite_blit.comp
++++ b/src/shaders/cs_composite_blit.comp
+@@ -50,7 +50,7 @@ void main() {
+     }
+ 
+     outputValue.rgb = encodeOutputColor(outputValue.rgb);
+-    imageStore(dst, ivec2(coord), outputValue);
++    imageStore(dst, ivec2(coord), vec4(outputValue.rgb, 1));
+ 
+     // Indicator to quickly tell if we're in the compositing path or not.
+     if (checkDebugFlag(compositedebug_Markers))