yes

vulkan/dynamic_state/VertexFetch.frag

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+#version 310 es
+precision highp float;
+
+layout(location = 0) in vec4 in_color;
+layout(location = 0) out vec4 out_color;
+
+void main()
+{
+  out_color = in_color;
+}

vulkan/dynamic_state/VertexFetch.mesh

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+#version 450
+#extension GL_EXT_mesh_shader : enable
+
+struct PositionColor {
+    vec4 position;
+    vec4 color;
+};
+
+layout(set=0, binding=0, std430) readonly buffer PositionColorBlock {
+    PositionColor posColor[];
+} vtxData;
+
+layout(push_constant, std430) uniform PushConstantBlock {
+    uint vertexOffset;
+} pc;
+
+layout(local_size_x=1) in;
+layout(triangles) out;
+layout(max_vertices=3, max_primitives=1) out;
+
+layout(location = 0) out vec4 outColor[];
+
+void main() {
+    SetMeshOutputsEXT(3u, 1u);
+    const uint firstVertex = uint(gl_WorkGroupID.x) + pc.vertexOffset;
+    for (uint i = 0u; i < 3u; ++i)
+    {
+        const uint srcIdx = firstVertex + i;
+        gl_MeshVerticesEXT[i].gl_Position = vtxData.posColor[srcIdx].position;
+        outColor[i] = vtxData.posColor[srcIdx].color;
+    }
+    gl_PrimitiveTriangleIndicesEXT[0] = uvec3(0, 1, 2);
+}

vulkan/dynamic_state/VertexFetch.vert

@@ -0,0 +1,13 @@
+#version 450
+precision highp float;
+
+layout(location = 0) in vec4 in_position;
+layout(location = 1) in vec4 in_color;
+
+layout(location = 0) out vec4 out_color;
+out gl_PerVertex { vec4 gl_Position; };
+
+void main() {
+	gl_Position = in_position;
+	out_color = in_color;
+}

vulkan/dynamic_state/VertexFetchLines.mesh

@@ -0,0 +1,33 @@
+#version 450
+#extension GL_EXT_mesh_shader : enable
+
+struct PositionColor {
+    vec4 position;
+    vec4 color;
+};
+
+layout(set=0, binding=0, std430) readonly buffer PositionColorBlock {
+    PositionColor posColor[];
+} vtxData;
+
+layout(push_constant, std430) uniform PushConstantBlock {
+    uint vertexOffset;
+} pc;
+
+layout(local_size_x=1) in;
+layout(lines) out;
+layout(max_vertices=2, max_primitives=1) out;
+
+layout(location = 0) out vec4 outColor[];
+
+void main() {
+    SetMeshOutputsEXT(2u, 1u);
+    const uint firstVertex = uint(gl_WorkGroupID.x) + pc.vertexOffset;
+    for (uint i = 0u; i < 2u; ++i)
+    {
+        const uint srcIdx = firstVertex + i;
+        gl_MeshVerticesEXT[i].gl_Position = vtxData.posColor[srcIdx].position;
+        outColor[i] = vtxData.posColor[srcIdx].color;
+    }
+    gl_PrimitiveLineIndicesEXT[0] = uvec2(0, 1);
+}

vulkan/dynamic_state/VertexFetchViewportArray.mesh

@@ -0,0 +1,34 @@
+#version 450
+#extension GL_EXT_mesh_shader : enable
+
+struct PositionColor {
+    vec4 position;
+    vec4 color;
+};
+
+layout(set=0, binding=0, std430) readonly buffer PositionColorBlock {
+    PositionColor posColor[];
+} vtxData;
+
+layout(push_constant, std430) uniform PushConstantBlock {
+    uint vertexOffset;
+} pc;
+
+layout(local_size_x=1) in;
+layout(triangles) out;
+layout(max_vertices=3, max_primitives=1) out;
+
+layout(location = 0) out vec4 outColor[];
+
+void main() {
+    SetMeshOutputsEXT(3u, 1u);
+    const uint firstVertex = uint(gl_WorkGroupID.x) + pc.vertexOffset;
+    for (uint i = 0u; i < 3u; ++i)
+    {
+        const uint srcIdx = firstVertex + i;
+        gl_MeshVerticesEXT[i].gl_Position = vtxData.posColor[srcIdx].position;
+        outColor[i] = vtxData.posColor[srcIdx].color;
+    }
+    gl_PrimitiveTriangleIndicesEXT[0] = uvec3(0, 1, 2);
+    gl_MeshPrimitivesEXT[0].gl_ViewportIndex = int(round(vtxData.posColor[firstVertex].position.z * 3.0));
+}

vulkan/dynamic_state/ViewportArray.geom

@@ -0,0 +1,18 @@
+#version 450
+layout(triangles) in;
+layout(triangle_strip, max_vertices = 3) out;
+
+in gl_PerVertex { vec4 gl_Position; } gl_in[];
+out gl_PerVertex { vec4 gl_Position; };
+layout(location = 0) in vec4 in_color[];
+layout(location = 0) out vec4 out_color;
+
+void main() {
+	for (int i=0; i<gl_in.length(); ++i) {
+		gl_Position = gl_in[i].gl_Position;
+		gl_ViewportIndex = int(round(gl_in[i].gl_Position.z * 3.0));
+		out_color = in_color[i];
+		EmitVertex();
+	}
+	EndPrimitive();
+}