alpha copy + barriers

src/video_core/host_shaders/convert_b10gr11f_to_abgr8.frag

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#version 450
+
+layout(binding = 0) uniform sampler2D tex;
+
+layout(push_constant) uniform PushConstants {
+    uniform vec2 tex_scale;
+    uniform vec2 tex_offset;
+};
+
+layout(location = 0) out vec4 color;
+
+void main() {
+    vec2 coord = gl_FragCoord.xy / tex_scale * textureSize(tex, 0);
+    vec4 fetch = texelFetch(tex, ivec2(coord), 0);
+    color = vec4(fetch.rgb, 1.0);
+}