vkd3d/tests/hlsl/fwidth.shader_test
Conor McCarthy 57280673e5 tests/shader-runner: Test shaders with dxcompiler.
The location of dxcompiler should be set during configuration with
'DXCOMPILER_LIBS=-L/path/to/dxcompiler', and then at runtime with
LD_LIBRARY_PATH, WINEPATH or PATH as applicable.

A new 'fail(sm<6)' decoration is needed on many shader declarations
because dxcompiler succeeds on many shaders which fail with fxc. The
opposite case is less common and is flagged with 'fail(sm>=6)'. A few
tests cause dxcompiler to crash or hang, so these are avoided using
[require], which now skips tests until reset instead of exiting. Also,
'todo(sm<6)' and 'todo(sm>=6)' are used to separate checking of results.
2023-10-11 22:21:14 +02:00

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[require]
shader model >= 3.0
[pixel shader]
float4 main(float4 pos : sv_position) : sv_target
{
// Shader models < 4 don't add 0.5 to sv_position, so this adjustment is required to get the
// same outputs.
pos.x = floor(pos.x) + 0.5;
pos.y = floor(pos.y) + 0.5;
pos /= 10.0;
float nonlinear = pos.x * pos.y - pos.x * (pos.x + 0.5);
float4 res = fwidth(nonlinear);
// Each device may use either the coarse or the fine derivate, so use quantization.
return round(30 * res);
}
[test]
todo(sm>=6) draw quad
probe (10, 10) rgba (8.0, 8.0, 8.0, 8.0)
probe (11, 10) rgba (8.0, 8.0, 8.0, 8.0)
probe (12, 10) rgba (10.0, 10.0, 10.0, 10.0)
probe (16, 16) rgba (12.0, 12.0, 12.0, 12.0)
probe (150, 150) rgba (92.0, 92.0, 92.0, 92.0)