vkd3d/tests/hlsl/fog.shader_test

[require]
shader model < 3.0

[vertex shader fail]
void main(float4 pos : position, out float2 fog : fog, out float4 out_pos : sv_position)
{
    fog = 0.5;
    out_pos = pos;
}

[require]
shader model >= 3.0

[vertex shader]
void main(float4 pos : position, out float2 fog : fog, out float4 out_pos : sv_position)
{
    fog = float2(0.1, 0.2);
    out_pos = pos;
}

[pixel shader]
float4 main(float2 fog : fog) : sv_target
{
    return float4(fog, 0, 1);
}

[test]
draw quad
probe (0, 0) rgba (0.1, 0.2, 0, 1)


[require]
fog

[input layout]
0 r32g32b32a32-float position

[vb 0]
-1.0 -1.0 0.2 1.0
-1.0  1.0 0.2 1.0
 1.0 -1.0 0.6 1.0
 1.0  1.0 0.6 1.0

[vertex shader]
float4 main(float4 pos : position, out float fog : fog) : sv_position
{
    fog = 0.2;
    return pos;
}

[pixel shader]
float4 main() : sv_target
{
    return float4(0, 0, 1, 1);
}

[test]
fog-colour 0.0 1.0 1.0 1.0

fog disable
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.0, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.0, 1.0, 1.0)
probe (160, 120) rgba (0.0, 0.0, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.0, 1.0, 1.0)

fog none
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.8, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.8, 1.0, 1.0)
probe (160, 120) rgba (0.0, 0.8, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.8, 1.0, 1.0)

fog linear ortho 0.1 1.1
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.2, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.4, 1.0, 1.0) 64
probe (160, 120) rgba (0.0, 0.2, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.4, 1.0, 1.0) 64

fog exp ortho 2.0
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.45118836, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.63212056, 1.0, 1.0) 64
probe (160, 120) rgba (0.0, 0.45118836, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.63212056, 1.0, 1.0) 64

fog exp2 ortho 2.0
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.30232367, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.63212056, 1.0, 1.0) 64
probe (160, 120) rgba (0.0, 0.30232367, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.63212056, 1.0, 1.0) 64


% Test a VS that doesn't write fog, but does write specular.

[vertex shader]
float4 main(float4 pos : position, out float4 specular : color1) : sv_position
{
    specular = float4(0, 0, 0, 0.3);
    return pos;
}

[test]
fog none
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.7, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.7, 1.0, 1.0)
probe (160, 120) rgba (0.0, 0.7, 1.0, 1.0)
probe (480, 360) rgba (0.0, 0.7, 1.0, 1.0)

fog linear ortho 0.1 1.1
draw triangle strip 4
probe (160, 120) rgba (0.0, 0.2, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.4, 1.0, 1.0) 64
probe (160, 120) rgba (0.0, 0.2, 1.0, 1.0) 64
probe (480, 360) rgba (0.0, 0.4, 1.0, 1.0) 64


% Test the non-orthogonal case, where fog comes from W.
% We don't do this using the same VB: drivers disagree on whether Z means vertex
% Z or pixel Z (i.e. whether perspective division is applied, as well as things
% like depth bias) so we want W to be flat 1.0 for the Z tests.

[vb 0]
-2.0  0.0 0.2 0.5
 0.0  2.0 0.2 0.5
 0.0  0.0 0.2 0.5

 0.0  0.0 0.2 0.9
 0.0  2.0 0.2 0.9
 2.0  0.0 0.2 0.9

 0.0 -2.0 0.5 0.5
-2.0  0.0 0.5 0.5
 0.0  0.0 0.5 0.5

 0.0 -2.0 0.5 0.9
 0.0  0.0 0.5 0.9
 2.0  0.0 0.5 0.9

[test]
fog linear non-ortho 0.1 1.1
draw triangle list 12
probe (300, 220) rgba (0.0, 0.4, 1.0, 1.0) 64
probe (340, 220) rgba (0.0, 0.8, 1.0, 1.0) 64
probe (300, 260) rgba (0.0, 0.4, 1.0, 1.0) 64
probe (340, 260) rgba (0.0, 0.8, 1.0, 1.0) 64