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# Verify that a geometry shader can access an input array using a
# dynamic index rather than a constant index.
[require]
GL >= 3.2
GLSL >= 1.50
[vertex shader]
#version 150
in vec4 vertex;
in ivec4 color;
in ivec4 modulus;
in int index;
out vec4 vertex_to_gs;
out ivec4 color_to_gs;
out ivec4 modulus_to_gs;
out int index_to_gs;
void main()
{
vertex_to_gs = vertex;
color_to_gs = color;
modulus_to_gs = modulus;
index_to_gs = index;
}
[geometry shader]
#version 150
layout(triangles) in;
layout(triangle_strip, max_vertices = 3) out;
in vec4 vertex_to_gs[3];
in ivec4 color_to_gs[3];
in ivec4 modulus_to_gs[3];
in int index_to_gs[3];
out vec4 color_to_fs;
void main()
{
for (int i = 0; i < 3; i++) {
gl_Position = vertex_to_gs[i];
color_to_fs = vec4(mod(color_to_gs[i], modulus_to_gs[index_to_gs[i]]));
EmitVertex();
}
}
[fragment shader]
#version 150
in vec4 color_to_fs;
out vec4 color;
void main()
{
color = color_to_fs;
}
[vertex data]
vertex/float/2 color/int/4 modulus/int/4 index/int/1
-1.0 -1.0 5 7 9 10 4 7 5 2 2
1.0 -1.0 2 3 4 3 2 2 2 2 1
1.0 1.0 8 15 15 15 5 6 9 9 0
-1.0 -1.0 5 7 9 10 4 7 5 2 2
1.0 1.0 2 3 4 3 2 2 2 2 1
-1.0 1.0 8 15 15 15 5 6 9 9 0
[test]
draw arrays GL_TRIANGLES 0 6
probe all rgba 0.0 1.0 0.0 1.0
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