Add dummy shader for testing purposes

This is used to make sure the vertex stage successfully completed, thats
it.

renderer/CMakeLists.txt

@@ -19,6 +19,7 @@ qt_add_resources(renderer
         "shaders"
         PREFIX "/"
         FILES
+        shaders/dummy.frag.spv
         shaders/imgui.frag.spv
         shaders/imgui.vert.spv
         shaders/mesh.frag.spv

renderer/shaders/compile_shaders.sh

@@ -6,4 +6,5 @@ glslc mesh.vert -o mesh.vert.spv &&
 glslc skinned.vert -o skinned.vert.spv &&
 glslc mesh.frag -o mesh.frag.spv &&
 glslc imgui.vert -o imgui.vert.spv &&
-glslc imgui.frag -o imgui.frag.spv
+glslc imgui.frag -o imgui.frag.spv &&
+glslc dummy.frag -o dummy.frag.spv

renderer/shaders/dummy.frag

@@ -0,0 +1,10 @@
+// SPDX-FileCopyrightText: 2023 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: CC0-1.0
+
+#version 450
+
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(1.0);
+}