diff options
| author | Eric Anholt <eric@anholt.net> | 2010-07-30 10:14:00 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-07-30 15:14:10 -0700 |
| commit | 8d8d724ddb2f46ee7b1dee4f2d4ff52c6f6bd001 (patch) | |
| tree | ec7fe8fdb9afa2e92de16344c6cada76a6d4dc71 /tests/shaders/glsl-fs-atan-1.shader_test | |
| parent | 8f8d4ddebb9abf79d716971eef2647701904be32 (diff) | |
glsl-fs-atan-*: Test for builtin atan(y, x) results for a few arguments.
Diffstat (limited to 'tests/shaders/glsl-fs-atan-1.shader_test')
| -rw-r--r-- | tests/shaders/glsl-fs-atan-1.shader_test | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/shaders/glsl-fs-atan-1.shader_test b/tests/shaders/glsl-fs-atan-1.shader_test new file mode 100644 index 000000000..c659ace08 --- /dev/null +++ b/tests/shaders/glsl-fs-atan-1.shader_test @@ -0,0 +1,30 @@ +[require] +GL >= 2.0 +GLSL >= 1.10 + +[vertex shader] +varying vec2 pos; +void main() +{ + gl_Position = gl_Vertex; + pos = gl_Vertex.xy; +} + +[fragment shader] +varying vec2 pos; +void main() +{ + gl_FragColor = vec4(atan(pos.y, pos.x) / (2.0 * 3.1415926) + 0.5); +} + +[test] +draw rect -1 -1 2 2 +relative probe rgba (1.0, 0.5) (0.5, 0.5, 0.5, 0.5) +relative probe rgba (1.0, 1.0) (0.625, 0.625, 0.625, 0.625) +relative probe rgba (0.5, 1.0) (0.75, 0.75, 0.75, 0.75) +relative probe rgba (0.0, 1.0) (0.875, 0.875, 0.875, 0.875) +# discontinuity here. See glsl-fs-atan-2 for that. +# relative probe rgba (0.0, 0.5) (1.0, 1.0, 1.0, 1.0) +relative probe rgba (0.0, 0.0) (0.125, 0.125, 0.125, 0.125) +relative probe rgba (0.5, 0.0) (0.25, 0.25, 0.25, 0.25) +relative probe rgba (1.0, 0.0) (0.375, 0.375, 0.375, 0.375) |