ADD: debug draw

shaders/debug_lines.frag

@@ -0,0 +1,10 @@
+#version 450
+
+layout(location = 0) in vec4 inColor;
+layout(location = 0) out vec4 outColor;
+
+void main()
+{
+    outColor = inColor;
+}
+

shaders/debug_lines.vert

@@ -0,0 +1,31 @@
+#version 450
+
+#extension GL_EXT_buffer_reference : require
+
+layout(location = 0) out vec4 outColor;
+
+struct DebugVertex
+{
+    vec3 position;
+    float _pad0;
+    vec4 color;
+};
+
+layout(buffer_reference, std430) readonly buffer DebugVertexBuffer
+{
+    DebugVertex vertices[];
+};
+
+layout(push_constant) uniform DebugPush
+{
+    mat4 viewproj;
+    DebugVertexBuffer vertexBuffer;
+} pc;
+
+void main()
+{
+    DebugVertex v = pc.vertexBuffer.vertices[gl_VertexIndex];
+    gl_Position = pc.viewproj * vec4(v.position, 1.0);
+    outColor = v.color;
+}
+