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# Even columns fetch from tex0 (black), while odd columns fetch from tex1 (white).
# The shader inverts the color of even collumns to get make them white,
# so the final image should be completely white.
#
# At the moment, radeonsi miscompiles this shader and only fetches from tex0
# in both cases.
[require]
GLSL >= 1.10
[vertex shader]
void main()
{
gl_Position = gl_Vertex;
gl_TexCoord[0] = vec4(0.0);
}
[fragment shader]
uniform sampler2D tex0, tex1;
void main()
{
bool pat = fract(gl_FragCoord.x / 2.0) < 0.5;
gl_FragColor = pat ?
texture2D(tex0, gl_TexCoord[0].xy) :
texture2D(tex1, gl_TexCoord[0].xy);
if (pat)
gl_FragColor = vec4(1.0) - gl_FragColor;
}
[test]
texture checkerboard 0 0 (8, 8) (0, 0, 0, 0) (0, 0, 0, 0)
texture checkerboard 1 0 (8, 8) (1, 1, 1, 1) (1, 1, 1, 1)
uniform int tex0 0
uniform int tex1 1
draw rect -1 -1 2 2
probe all rgba 1.0 1.0 1.0 1.0
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