# The i965 backend has special code to handle TCS output reads. This is a
# simple test to make sure we handle component packing correctly in that case.

[require]
GLSL >= 1.50
GL_ARB_arrays_of_arrays
GL_ARB_enhanced_layouts
GL_ARB_tessellation_shader
GL_ARB_separate_shader_objects

[vertex shader]
#extension GL_ARB_enhanced_layouts: require
#extension GL_ARB_separate_shader_objects: require

in vec4 vertex;

// consume Y/Z/W components
layout(location = 0, component = 1) out vec3 a;

// consumes X component
layout(location = 0) out float b;

void main()
{
	gl_Position = vertex;

	a = vec3(0.0, 0.75, 1.0);
	b = 0.25;
}


[tessellation control shader]
#extension GL_ARB_arrays_of_arrays: require
#extension GL_ARB_enhanced_layouts: require
#extension GL_ARB_tessellation_shader: require
#extension GL_ARB_separate_shader_objects: require

layout(vertices = 3) out;

// consume Y/Z/W components
layout(location = 0, component = 1) in vec3 a[];

// consumes X component
layout(location = 0) in float b[];

// consume Y/Z/W components
layout(location = 0, component = 1) patch out vec3 a_tcs[2];

// consumes X component
layout(location = 0) patch out float b_tcs[2];

void main() {
        float tmpf[2];

	gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
	gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 0.0);
	gl_TessLevelInner = float[2](0.0, 0.0);
	a_tcs[1] = a[gl_InvocationID];
	b_tcs[1] = b[gl_InvocationID];

	// swap output
	tmpf[0] = a_tcs[1].y;
	tmpf[1] = b_tcs[1];
	a_tcs[1].y = tmpf[1];
	b_tcs[1] = tmpf[0];
}


[tessellation evaluation shader]
#extension GL_ARB_arrays_of_arrays: require
#extension GL_ARB_enhanced_layouts: require
#extension GL_ARB_tessellation_shader: require
#extension GL_ARB_separate_shader_objects: require

layout(triangles) in;

// consume Y/Z/W components
layout(location = 0, component = 1) patch in vec3 a_tcs[2];

// consumes X component
layout(location = 0) patch in float b_tcs[2];

// consume Y/Z/W components
layout(location = 0, component = 1) out vec3 a_tes;

// consumes X component
layout(location = 0) out float b_tes;

void main() {
	gl_Position = gl_in[0].gl_Position * gl_TessCoord[0]
	            + gl_in[1].gl_Position * gl_TessCoord[1]
	            + gl_in[2].gl_Position * gl_TessCoord[2];

	a_tes = a_tcs[1];
	b_tes = b_tcs[1];
}


[fragment shader]
#extension GL_ARB_enhanced_layouts: require
#extension GL_ARB_separate_shader_objects: require

// consume Y/Z/W components
layout(location = 0, component = 1) in vec3 a_tes;

// consumes X component
layout(location = 0) in float b_tes;

void main()
{
	gl_FragColor = vec4(b_tes, a_tes);
}

[vertex data]
vertex/float/2
-1.0 -1.0
 1.0 -1.0
-1.0  1.0
-1.0  1.0
 1.0 -1.0
 1.0  1.0

[test]
clear color 0.1 0.1 0.1 0.1
clear
patch parameter vertices 3
draw arrays GL_PATCHES 0 6
probe all rgba 0.75 0.0 0.25 1.0