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matrix-transform-test: Test vector transforms

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Add an output transform function that doesn't use matrices so we can
test our matrix generation by applying it to vectors and comparing with
the non-matrix variant.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
This commit is contained in:
Derek Foreman 2023-01-10 10:32:48 -06:00 committed by Daniel Stone
parent ce6c8e8fd6
commit 5d6cb00b1a
1 changed files with 55 additions and 0 deletions
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55
tests/matrix-transform-test.c
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@ -374,11 +374,60 @@ simple_weston_output_prepare(struct weston_output *output,
weston_output_update_matrix(output);
}
static struct weston_vector
simple_transform_vector(struct weston_output *output, struct weston_vector in)
{
struct weston_vector out = in;
int scale = output->current_scale;
switch (output->transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
out.f[0] = (-output->x + in.f[0]) * scale;
out.f[1] = (-output->y + in.f[1]) * scale;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
out.f[0] = (output->x + output->width - in.f[0]) * scale;
out.f[1] = (-output->y + in.f[1]) * scale;
break;
case WL_OUTPUT_TRANSFORM_90:
out.f[0] = (-output->y + in.f[1]) * scale;
out.f[1] = (output->x + output->width - in.f[0]) * scale;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
out.f[0] = (-output->y + in.f[1]) * scale;
out.f[1] = (-output->x + in.f[0]) * scale;
break;
case WL_OUTPUT_TRANSFORM_180:
out.f[0] = (output->x + output->width - in.f[0]) * scale;
out.f[1] = (output->y + output->height - in.f[1]) * scale;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
out.f[0] = (-output->x + in.f[0]) * scale;
out.f[1] = (output->y + output->height - in.f[1]) * scale;
break;
case WL_OUTPUT_TRANSFORM_270:
out.f[0] = (output->y + output->height - in.f[1]) * scale;
out.f[1] = (-output->x + in.f[0]) * scale;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
out.f[0] = (output->y + output->height - in.f[1]) * scale;
out.f[1] = (output->x + output->width - in.f[0]) * scale;
break;
}
out.f[2] = 0;
out.f[3] = 1;
return out;
}
static void
output_test_all_transforms(struct weston_output *output,
int x, int y, int width, int height, int scale)
{
int i;
int transform;
struct weston_vector t = { { 7.0, 13.0, 0.0, 1.0 } };
struct weston_vector v, sv;
for (transform = WL_OUTPUT_TRANSFORM_NORMAL;
transform <= WL_OUTPUT_TRANSFORM_FLIPPED_270; transform++) {
@ -389,6 +438,12 @@ output_test_all_transforms(struct weston_output *output,
* standard transform.
*/
transform_expect(&output->matrix, true, transform);
v = t;
weston_matrix_transform(&output->matrix, &v);
sv = simple_transform_vector(output, t);
for (i = 0; i < 4; i++)
assert (sv.f[i] == v.f[i]);
}
}