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# From the ARB_cull_distance spec:
#
# The built-in output variables gl_ClipDistance and glCullDistance hold the
# clip distance(s) and cull distance(s), respectively, used in the culling
# stage, as described in section 13.5.
#
# This test checks that the arrays gl_ClipDistance and gl_CullDistance only
# interfer by gl_MaxCombinedClipAndCullDistances and not by its entrys.
[require]
GLSL >= 1.30
GL_ARB_cull_distance
[vertex shader]
#version 130
#extension GL_ARB_cull_distance: enable
out float gl_ClipDistance[4];
out float gl_CullDistance[4];
void main()
{
gl_Position = gl_Vertex;
for (int i = 1; i <= 4; ++i) {
gl_ClipDistance[i-1] = i;
gl_CullDistance[i-1] = i*5;
}
}
[fragment shader]
#version 130
#extension GL_ARB_cull_distance: enable
in float gl_ClipDistance[4];
in float gl_CullDistance[4];
void main()
{
gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
for (int i = 1; i <= 4; ++i) {
if (gl_ClipDistance[i-1] != i)
gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0);
if (gl_CullDistance[i-1] != (i*5))
gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
}
}
[test]
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
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