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monitor-transform: Add helper to transform matrices

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Moved from `MetaShapedTexture` - it will be useful
in several other places as well.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/344>
This commit is contained in:
Robert Mader 2022-07-03 12:38:37 +02:00
parent 385df73276
commit df27017ba3
3 changed files with 54 additions and 43 deletions
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49
src/backends/meta-monitor-transform.c
View File

@ -153,3 +153,52 @@ meta_monitor_transform_transform_point (MetaMonitorTransform transform,
break; break;
} }
} }
void
meta_monitor_transform_transform_matrix (MetaMonitorTransform transform,
graphene_matrix_t *matrix)
{
graphene_euler_t euler;
if (transform == META_MONITOR_TRANSFORM_NORMAL)
return;
graphene_matrix_translate (matrix,
&GRAPHENE_POINT3D_INIT (-0.5, -0.5, 0.0));
switch (transform)
{
case META_MONITOR_TRANSFORM_90:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 270.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_180:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 180.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_270:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 90.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 0.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_90:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 90.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_180:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 180.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_270:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 270.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_NORMAL:
g_assert_not_reached ();
}
graphene_matrix_rotate_euler (matrix, &euler);
graphene_matrix_translate (matrix,
&GRAPHENE_POINT3D_INIT (0.5, 0.5, 0.0));
}

3
src/backends/meta-monitor-transform.h
View File

@ -72,4 +72,7 @@ void meta_monitor_transform_transform_point (MetaMonitorTransform transform,
int *out_x, int *out_x,
int *out_y); int *out_y);
void meta_monitor_transform_transform_matrix (MetaMonitorTransform transform,
graphene_matrix_t *matrix);
#endif /* META_MONITOR_TRANSFORM_H */ #endif /* META_MONITOR_TRANSFORM_H */

45
src/compositor/meta-shaped-texture.c
View File

@ -310,49 +310,8 @@ get_base_pipeline (MetaShapedTexture *stex,
} }
} }
if (stex->transform != META_MONITOR_TRANSFORM_NORMAL) meta_monitor_transform_transform_matrix (stex->transform,
{ &matrix);
graphene_euler_t euler;
graphene_matrix_translate (&matrix,
&GRAPHENE_POINT3D_INIT (-0.5, -0.5, 0.0));
switch (stex->transform)
{
case META_MONITOR_TRANSFORM_90:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 270.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_180:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 180.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_270:
graphene_euler_init_with_order (&euler, 0.0, 0.0, 90.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 0.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_90:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 90.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_180:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 180.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_FLIPPED_270:
graphene_euler_init_with_order (&euler, 0.0, 180.0, 270.0,
GRAPHENE_EULER_ORDER_SYXZ);
break;
case META_MONITOR_TRANSFORM_NORMAL:
g_assert_not_reached ();
}
graphene_matrix_rotate_euler (&matrix, &euler);
graphene_matrix_translate (&matrix,
&GRAPHENE_POINT3D_INIT (0.5, 0.5, 0.0));
}
cogl_pipeline_set_layer_matrix (pipeline, 1, &matrix); cogl_pipeline_set_layer_matrix (pipeline, 1, &matrix);