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[require]
GLSL >= 1.10
[vertex shader]
varying vec2 texcoords;
uniform float yoffset;
void main()
{
gl_Position = gl_Vertex;
texcoords = gl_Vertex.xy + vec2(0.0, yoffset);
}
[fragment shader]
varying vec2 texcoords;
uniform sampler2D left;
uniform sampler2D right;
void main()
{
if (texcoords.x < 0.0) {
gl_FragColor = texture2D(left, texcoords.xy + vec2(1.0, 0.0));
} else {
gl_FragColor = texture2D(right, texcoords.xy);
}
}
[test]
texture checkerboard 0 0 (8, 8) (0.0, 0.0, 0.0, 0.0) (0.0, 1.0, 0.0, 0.0)
texture checkerboard 1 0 (8, 8) (0.0, 0.0, 0.0, 0.0) (1.0, 0.0, 0.0, 0.0)
uniform int left 0
uniform int right 1
uniform float yoffset 1.0
draw rect -1 -1 2 1
uniform int left 1
uniform int right 0
uniform float yoffset 0.0
draw rect -1 0 2 1
relative probe rgb (0.375, 0.125) (0.0, 1.0, 0.0)
relative probe rgb (0.125, 0.375) (0.0, 1.0, 0.0)
relative probe rgb (0.875, 0.625) (0.0, 1.0, 0.0)
relative probe rgb (0.675, 0.875) (0.0, 1.0, 0.0)
relative probe rgb (0.875, 0.125) (1.0, 0.0, 0.0)
relative probe rgb (0.625, 0.375) (1.0, 0.0, 0.0)
relative probe rgb (0.375, 0.625) (1.0, 0.0, 0.0)
relative probe rgb (0.125, 0.875) (1.0, 0.0, 0.0)
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