
group varying "Varying linkage"
	group rules "Rules"

		case input_type_mismatch
			version 310 es
			desc "Tessellation control shader input type mismatch"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump vec2 tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID].x;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_type_mismatch
			version 310 es
			desc "Tessellation evaluation shader output type mismatch"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump vec2 te_out;
				void main()
				{
					out0 = te_out.x + te_out.y;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case internal_type_mismatch
			version 310 es
			desc "Tessellation control and evaluation shader varying type mismatch"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump vec2 tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2].x + tc_out[0].y;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_different_precision
			version 310 es
			desc "Tessellation control shader input precisions different"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out highp float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in lowp float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_different_precision
			version 310 es
			desc "Tessellation evaluation shader output precisions different"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out highp float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in lowp float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case internal_different_precision
			version 310 es
			desc "Tessellation control and evaluation shader varying precisions different"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out highp float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in lowp float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_no_declaration
			version 310 es
			desc "Tessellation control shader input with no matching output"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_no_declaration
			version 310 es
			desc "Tessellation evaluation shader without output for an fragment shader input"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				void main()
				{
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case internal_no_declaration
			version 310 es
			desc "Tessellation evaluation shader input without matching output"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_superfluous_declaration
			version 310 es
			desc "Tessellation control has no input for an output"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				out mediump float tc_in_unused;
				void main()
				{
					tc_in = in0;
					tc_in_unused = in0 + 1.0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_superfluous_declaration
			version 310 es
			desc "Tessellation has an output without a matching input"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				out mediump float te_out_unused;
				void main()
				{
					te_out = tc_out[2];
					te_out_unused = tc_out[0];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case internal_superfluous_declaration
			version 310 es
			desc "Tessellation control has an output without a matching input"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				out mediump float tc_out_unused[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					tc_out_unused[gl_InvocationID] = tc_in[gl_InvocationID] + 1.0;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case vertex_fragment_same_varying_name_1
			version 310 es
			desc "Tessellation control has an output without a matching input"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 2.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float sharedVaringName;
				void main()
				{
					sharedVaringName = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float sharedVaringName[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = sharedVaringName[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float sharedVaringName;
				void main()
				{
					sharedVaringName = 2.0 * tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float sharedVaringName;
				void main()
				{
					out0 = sharedVaringName;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case vertex_fragment_same_varying_name_2
			version 310 es
			desc "Tessellation control has an output without a matching input"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input vec2 in0 = vec2(1.0, 3.0);
				output float out0 = 4.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump vec2 sharedVaringName;
				void main()
				{
					sharedVaringName = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump vec2 sharedVaringName[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = sharedVaringName[gl_InvocationID].x + sharedVaringName[gl_InvocationID].y;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float sharedVaringName;
				void main()
				{
					sharedVaringName = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float sharedVaringName;
				void main()
				{
					out0 = sharedVaringName;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case invalid_vertex_index
			version 310 es
			desc "Tessellation control output not indexed with gl_InvocationID"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				out mediump float tc_out[];
				void main()
				{
					tc_out[2 - gl_InvocationID] = float(gl_InvocationID);
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case input_non_array
			version 310 es
			desc "Tessellation control input in not an array"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in;
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_non_array
			version 310 es
			desc "Tessellation control output out not an array"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out; // not an array
				void main()
				{
					tc_out = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_array_size_mismatch
			version 310 es
			desc "Tessellation control input array size is not gl_MaxPatchVertices"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[2]; // not gl_MaxPatchVertices
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case internal_array_size_mismatch
			version 310 es
			desc "Tessellation control output array size is not consistent with layout qualifier"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[2]; // does not match output layout qualifier
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[2];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[1];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case invalid_patch_in_usage
			version 310 es
			desc "Invalid use of the patch_in qualifier in a non-tessellation shader"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float frag_in;
				out mediump float var;
				void main()
				{
					frag_in = in0;
					var = 2.0;
					${VERTEX_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				patch in mediump float var; // invalid use of patch_in
				in mediump float frag_in;
				void main()
				{
					out0 = frag_in * var;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case invalid_patch_out_usage
			version 310 es
			desc "Invalid use of the patch_out qualifier in a non-tessellation shader"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float frag_in;
				patch out mediump float var;
				void main()
				{
					frag_in = in0;
					var = 2.0;
					${VERTEX_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float var; // invalid use of patch_out
				in mediump float frag_in;
				void main()
				{
					out0 = frag_in * var;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case invalid_per_patch_qualifier_usage
			version 310 es
			desc "Invalid use of per-patch qualifier on input variable in tessellation control shader"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				patch in mediump float tc_in; // patch in not allowed in TCS
				patch out mediump float tc_out;
				void main()
				{
					tc_out = tc_in;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				patch in mediump float tc_out;
				out mediump float te_out;
				void main()
				{
					te_out = tc_out;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case per_patch_qualifier_mismatch_1
			version 310 es
			desc "Tessellation control output is per-patch qualified, evaluation input is not"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				patch out mediump float tc_out[gl_MaxPatchVertices];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[gl_MaxPatchVertices];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case per_patch_qualifier_mismatch_2
			version 310 es
			desc "Tessellation control output is not per-patch qualified, evaluation input is"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[gl_MaxPatchVertices];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				patch in mediump float tc_out[gl_MaxPatchVertices];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_block
			version 310 es
			desc "Tessellation control shader input block"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { vertex }
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName;
				void main()
				{
					outputInstanceName.var = 1.0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} inputInstanceName[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = inputInstanceName[gl_InvocationID].var;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_block_non_array
			version 310 es
			desc "Tessellation control shader input block without explicit array"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { vertex }
			expect compile_or_link_fail
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName;
				void main()
				{
					outputInstanceName.var = 1.0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} inputInstanceName;
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = inputInstanceName.var;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float geo_out;
				void main()
				{
					out0 = geo_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_block_non_array
			version 310 es
			desc "Tessellation control shader output block without explicit array"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { vertex }
			expect compile_or_link_fail
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = 1.0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName; // not an array
				void main()
				{
					outputInstanceName.var = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} outputInstanceName[];
				out mediump float te_out;
				void main()
				{
					te_out = outputInstanceName[2].var;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case input_block_array_size_mismatch
			version 310 es
			desc "Tessellation control shader input block array, size not gl_MaxPatchVertices"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { vertex }
			expect compile_or_link_fail
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName;
				void main()
				{
					outputInstanceName.var = 1.0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} inputInstanceName[4]; // not gl_MaxPatchVertices
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = inputInstanceName[gl_InvocationID + 1].var;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float geo_out;
				void main()
				{
					out0 = geo_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_block
			version 310 es
			desc "Tessellation shader output block"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { fragment }
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName;
				void main()
				{
					outputInstanceName.var = 1.0;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} inputInstanceName;
				void main()
				{
					out0 = inputInstanceName.var;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case output_block_array
			version 310 es
			desc "Tessellation shader output block array"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_io_blocks" | "GL_EXT_shader_io_blocks" } in { fragment }
			values { output float out0 = 1.0; }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				out IOBlockName
				{
					mediump float var;
				} outputInstanceName[2];
				void main()
				{
					outputInstanceName[0].var = 2.0;
					outputInstanceName[1].var = 1.0;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in IOBlockName
				{
					mediump float var;
				} inputInstanceName[2];
				void main()
				{
					out0 = inputInstanceName[0].var - inputInstanceName[1].var;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case unspecified_vertex_count
			version 310 es
			desc "Tessellation shader unspecified vertex count"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				void main()
				{
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				void main()
				{
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case unspecified_primitive_mode
			version 310 es
			desc "Tessellation shader unspecified vertex count"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			expect compile_or_link_fail
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				void main()
				{
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				void main()
				{
					${FRAGMENT_OUTPUT}
				}
			""
		end
	end

	group qualifiers "Varying qualifiers"
		case smooth
			version 310 es
			desc "Smooth varying"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				smooth out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				smooth in mediump float tc_in[];
				smooth out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				smooth in mediump float tc_out[];
				smooth out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				smooth in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case flat
			version 310 es
			desc "Flat varying"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				flat out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				flat in mediump float tc_in[];
				flat out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				flat in mediump float tc_out[];
				flat out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				flat in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case centroid
			version 310 es
			desc "Centroid varying"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				centroid out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				centroid in mediump float tc_in[];
				centroid out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				centroid in mediump float tc_out[];
				centroid out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				centroid in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case sample
			version 310 es
			desc "Sample varying"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require extension { "GL_OES_shader_multisample_interpolation" }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				sample out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				sample in mediump float tc_in[];
				sample out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				sample in mediump float tc_out[];
				sample out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				sample in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case patch
			version 310 es
			desc "Pre-patch varying"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				patch out mediump float tc_out;
				void main()
				{
					tc_out = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				patch in mediump float tc_out;
				out mediump float te_out;
				void main()
				{
					te_out = tc_out;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end
	end

	import "linkage_tessellation_varying_types.test"
end

group uniform "Uniform"
	group rules "Rules"
		case type_mismatch_1
			version 310 es
			desc "uniform type mismatch between vertex and tessellation control shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				uniform mediump float val;
				out mediump float vtx_out;
				void main()
				{
					vtx_out = val;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump vec2 val;
				in mediump float vtx_out[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = vtx_out[0] + val.x + val.y;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case type_mismatch_2
			version 310 es
			desc "uniform type mismatch between fragment and tessellation eval shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float vtx_out;
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				void main()
				{
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				uniform mediump vec3 val;
				out mediump float te_out;
				void main()
				{
					te_out = val.x + val.y + val.z;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				uniform mediump vec4 val;
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out) + val;
				}
			""
		end

		case type_mismatch_3
			version 310 es
			desc "uniform type mismatch between tessellation control and eval shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float vtx_out;
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump vec4 val;
				out mediump vec4 tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = val;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				uniform mediump vec3 val;
				in mediump vec4 tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[0].w * val.z;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case type_mismatch_4
			version 310 es
			desc "uniform type mismatch between vertex and tessellation control shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require limit "GL_MAX_VERTEX_ATOMIC_COUNTERS" > 0
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				layout(binding=0) uniform atomic_uint u_var;
				out mediump float vtx_out;
				void main()
				{
					uint result = atomicCounterIncrement(u_var);
					vtx_out = float(result);
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump float u_var;
				in mediump float vtx_out[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = vtx_out[0] + u_var;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case type_mismatch_5
			version 310 es
			desc "uniform type mismatch between vertex and tessellation control shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			require limit "GL_MAX_VERTEX_IMAGE_UNIFORMS" > 0
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				layout(binding=0) layout(rgba8i) uniform readonly highp iimage2D u_var;
				out mediump float vtx_out;
				void main()
				{
					int result = imageSize(u_var).x;
					vtx_out = float(result);
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump float u_var;
				in mediump float vtx_out[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = vtx_out[0] + u_var;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case precision_mismatch_1
			version 310 es
			desc "uniform precision mismatch between tessellation control and eval shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float vtx_out;
				void main()
				{
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump vec4 val;
				out mediump vec4 tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = val;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				uniform highp vec4 val;
				in mediump vec4 tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[0].w * val.z;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case precision_mismatch_2
			version 310 es
			desc "uniform precision mismatch between vertex and tessellation control shaders"
			expect link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				uniform highp float val;
				out mediump float vtx_out;
				void main()
				{
					vtx_out = val;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				uniform mediump float val;
				in mediump float vtx_out[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = vtx_out[0] + val;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					${FRAG_COLOR} = vec4(te_out);
				}
			""
		end

		case struct_partial_usage
			version 310 es
			desc "uniform is partially used in different shader stages"
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				uniform float val.vtxVal	= 1.5;
				uniform float val.tcVal		= 2.5;
				uniform float val.teVal		= 6.0;
				uniform float val.fragVal	= 11.0;
				output float out0			= 68.5;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				struct S
				{
					mediump float vtxVal;
					mediump float tcVal;
					mediump float teVal;
					mediump float fragVal;
				};
				uniform S val;
				out mediump float vtx_out;
				void main()
				{
					vtx_out = val.vtxVal;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				struct S
				{
					mediump float vtxVal;
					mediump float tcVal;
					mediump float teVal;
					mediump float fragVal;
				};
				uniform S val;
				in mediump float vtx_out[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = vtx_out[0] + 2.0 * val.tcVal;
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				struct S
				{
					mediump float vtxVal;
					mediump float tcVal;
					mediump float teVal;
					mediump float fragVal;
				};
				uniform S val;
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2] + 3.0 * val.teVal;
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				struct S
				{
					mediump float vtxVal;
					mediump float tcVal;
					mediump float teVal;
					mediump float fragVal;
				};
				uniform S val;
				in mediump float te_out;
				void main()
				{
					out0 = te_out + 4.0 * val.fragVal;
					${FRAGMENT_OUTPUT};
				}
			""
		end
	end

	import "linkage_tessellation_uniform_types.test"
end

group layout_declarations "Layout linkage"
	group rules "Rules"

		case primitive_mode_mismatch
			version 310 es
			desc "Tessellation evaluation shader primitive mode mismatch"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				layout (triangles) in;
				layout (isolines) in;
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case spacing_mode_mismatch
			version 310 es
			desc "Tessellation evaluation shader spacing mode mismatch"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				layout (triangles, equal_spacing) in;
				layout (triangles, fractional_odd_spacing) in;
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case vertex_order_mismatch
			version 310 es
			desc "Tessellation evaluation shader vertex order mismatch"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				layout (triangles, cw) in;
				layout (triangles, ccw) in;
				    in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case vertex_count_mismatch
			version 310 es
			desc "Tessellation control shader vertex count mismatch"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				layout (vertices=3) out;
				layout (vertices=4) out;
				in mediump float tc_in[];
				out mediump float tc_out[];
				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end
	end
end

group barriers "Barriers"
	group rules "Rules"

		case invalid_barrier_usage_within_control_flow
			version 310 es
			desc "Tessellation control shader invalid barrier usage within control flow statement"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];

				void main()
				{
					if (gl_InvocationID == 0)
						barrier(); // error: within control flow

					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end

		case invalid_barrier_usage_after_return
			version 310 es
			desc "Tessellation control shader invalid barrier usage after main() returns"
			expect compile_or_link_fail
			require extension { "GL_OES_tessellation_shader" | "GL_EXT_tessellation_shader" } in { tessellation_control, tessellation_evaluation }
			values
			{
				input float in0 = 1.0;
				output float out0 = 1.0;
			}
			vertex ""
				#version 310 es
				${VERTEX_DECLARATIONS}
				out mediump float tc_in;
				void main()
				{
					tc_in = in0;
					${VERTEX_OUTPUT}
				}
			""
			tessellation_control ""
				#version 310 es
				${TESSELLATION_CONTROL_DECLARATIONS}
				in mediump float tc_in[];
				out mediump float tc_out[];

				void main()
				{
					tc_out[gl_InvocationID] = tc_in[gl_InvocationID];
					${TESSELLATION_CONTROL_OUTPUT}

					return;
					barrier(); // error: barrier() after return
				}
			""
			tessellation_evaluation ""
				#version 310 es
				${TESSELLATION_EVALUATION_DECLARATIONS}
				in mediump float tc_out[];
				out mediump float te_out;
				void main()
				{
					te_out = tc_out[2];
					${TESSELLATION_EVALUATION_OUTPUT}
				}
			""
			fragment ""
				#version 310 es
				precision mediump float;
				${FRAGMENT_DECLARATIONS}
				in mediump float te_out;
				void main()
				{
					out0 = te_out;
					${FRAGMENT_OUTPUT}
				}
			""
		end
	end
end