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cogl/matrix: Cleanup flags and turn them into an enum

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The only pair of flags we really care now is the DIRTY_INVERSE
and SINGULAR flags, used when computing the inverse.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1439
This commit is contained in:
Georges Basile Stavracas Neto 2020-09-10 15:31:44 -03:00
parent 947e538454
commit b878938de4
1 changed files with 23 additions and 85 deletions
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108
cogl/cogl/cogl-matrix.c
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@ -85,60 +85,12 @@ COGL_GTYPE_DEFINE_BOXED (Matrix, matrix,
cogl_matrix_copy,
cogl_matrix_free);
/*
* \defgroup MatFlags MAT_FLAG_XXX-flags
*
* Bitmasks to indicate different kinds of 4x4 matrices in CoglMatrix::flags
*/
#define MAT_FLAG_IDENTITY 0 /*< is an identity matrix flag.
* (Not actually used - the identity
* matrix is identified by the absence
* of all other flags.)
*/
#define MAT_FLAG_GENERAL 0x1 /*< is a general matrix flag */
#define MAT_FLAG_ROTATION 0x2 /*< is a rotation matrix flag */
#define MAT_FLAG_TRANSLATION 0x4 /*< is a translation matrix flag */
#define MAT_FLAG_UNIFORM_SCALE 0x8 /*< is an uniform scaling matrix flag */
#define MAT_FLAG_GENERAL_SCALE 0x10 /*< is a general scaling matrix flag */
#define MAT_FLAG_GENERAL_3D 0x20 /*< general 3D matrix flag */
#define MAT_FLAG_PERSPECTIVE 0x40 /*< is a perspective proj matrix flag */
#define MAT_FLAG_SINGULAR 0x80 /*< is a singular matrix flag */
#define MAT_DIRTY_TYPE 0x100 /*< matrix type is dirty */
#define MAT_DIRTY_FLAGS 0x200 /*< matrix flags are dirty */
#define MAT_DIRTY_INVERSE 0x400 /*< matrix inverse is dirty */
/* angle preserving matrix flags mask */
#define MAT_FLAGS_ANGLE_PRESERVING (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE)
/* geometry related matrix flags mask */
#define MAT_FLAGS_GEOMETRY (MAT_FLAG_GENERAL | \
MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE | \
MAT_FLAG_GENERAL_SCALE | \
MAT_FLAG_GENERAL_3D | \
MAT_FLAG_PERSPECTIVE | \
MAT_FLAG_SINGULAR)
/* length preserving matrix flags mask */
#define MAT_FLAGS_LENGTH_PRESERVING (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION)
/* 3D (non-perspective) matrix flags mask */
#define MAT_FLAGS_3D (MAT_FLAG_ROTATION | \
MAT_FLAG_TRANSLATION | \
MAT_FLAG_UNIFORM_SCALE | \
MAT_FLAG_GENERAL_SCALE | \
MAT_FLAG_GENERAL_3D)
/* dirty matrix flags mask */
#define MAT_DIRTY_ALL (MAT_DIRTY_TYPE | \
MAT_DIRTY_FLAGS | \
MAT_DIRTY_INVERSE)
enum CoglMatrixFlags
{
COGL_MATRIX_FLAG_NONE = 0,
COGL_MATRIX_FLAG_SINGULAR = 1 << 0,
COGL_MATRIX_FLAG_DIRTY_INVERSE = 1 << 1,
};
/*
* Identity matrix.
@ -181,7 +133,7 @@ cogl_matrix_multiply (CoglMatrix *result,
graphene_matrix_multiply (&mb, &ma, &res);
graphene_matrix_to_cogl_matrix (&res, result);
result->flags = a->flags | b->flags | MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE;
result->flags = a->flags | b->flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (result);
}
@ -204,7 +156,7 @@ _cogl_matrix_prefix_print (const char *prefix, const CoglMatrix *matrix)
{
print_matrix_floats (prefix, (float *)matrix);
g_print ("%sInverse: \n", prefix);
if (!(matrix->flags & MAT_DIRTY_INVERSE))
if (!(matrix->flags & COGL_MATRIX_FLAG_DIRTY_INVERSE))
print_matrix_floats (prefix, matrix->inv);
else
g_print ("%s - not available\n", prefix);
@ -272,20 +224,17 @@ calculate_inverse (CoglMatrix *matrix)
static gboolean
_cogl_matrix_update_inverse (CoglMatrix *matrix)
{
if (matrix->flags & MAT_DIRTY_FLAGS ||
matrix->flags & MAT_DIRTY_INVERSE)
if (matrix->flags & COGL_MATRIX_FLAG_DIRTY_INVERSE)
{
if (calculate_inverse (matrix))
matrix->flags &= ~MAT_FLAG_SINGULAR;
matrix->flags &= ~COGL_MATRIX_FLAG_SINGULAR;
else
matrix->flags |= MAT_FLAG_SINGULAR;
matrix->flags |= COGL_MATRIX_FLAG_SINGULAR;
matrix->flags &= ~(MAT_DIRTY_FLAGS |
MAT_DIRTY_TYPE |
MAT_DIRTY_INVERSE);
matrix->flags &= ~COGL_MATRIX_FLAG_DIRTY_INVERSE;
}
if (matrix->flags & MAT_FLAG_SINGULAR)
if (matrix->flags & COGL_MATRIX_FLAG_SINGULAR)
return FALSE;
else
return TRUE;
@ -326,8 +275,7 @@ cogl_matrix_rotate (CoglMatrix *matrix,
graphene_matrix_multiply (&rotation, &m, &m);
graphene_matrix_to_cogl_matrix (&m, matrix);
flags |= MAT_FLAG_ROTATION | MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE;
matrix->flags = flags;
matrix->flags = flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
@ -365,7 +313,7 @@ cogl_matrix_frustum (CoglMatrix *matrix,
graphene_matrix_multiply (&frustum, &m, &m);
graphene_matrix_to_cogl_matrix (&m, matrix);
flags |= MAT_FLAG_PERSPECTIVE | MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE;
flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
matrix->flags = flags;
_COGL_MATRIX_DEBUG_PRINT (matrix);
@ -413,11 +361,7 @@ cogl_matrix_orthographic (CoglMatrix *matrix,
graphene_matrix_multiply (&ortho, &m, &m);
graphene_matrix_to_cogl_matrix (&m, matrix);
matrix->flags = (flags |
MAT_FLAG_GENERAL_SCALE |
MAT_FLAG_TRANSLATION |
MAT_DIRTY_TYPE |
MAT_DIRTY_INVERSE);
matrix->flags = flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
@ -439,13 +383,7 @@ cogl_matrix_scale (CoglMatrix *matrix,
graphene_matrix_multiply (&scale, &m, &m);
graphene_matrix_to_cogl_matrix (&m, matrix);
if (fabsf (sx - sy) < 1e-8 && fabsf (sx - sz) < 1e-8)
flags |= MAT_FLAG_UNIFORM_SCALE;
else
flags |= MAT_FLAG_GENERAL_SCALE;
flags |= (MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE);
matrix->flags = flags;
matrix->flags = flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
@ -464,7 +402,7 @@ cogl_matrix_translate (CoglMatrix *matrix,
&GRAPHENE_POINT3D_INIT (x, y, z));
graphene_matrix_multiply (&translation, &m, &m);
graphene_matrix_to_cogl_matrix (&m, matrix);
matrix->flags |= MAT_FLAG_TRANSLATION | MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE;
matrix->flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
@ -483,7 +421,7 @@ _cogl_matrix_init_identity (CoglMatrix *matrix)
{
memcpy (matrix, identity, 16 * sizeof (float));
matrix->flags = MAT_DIRTY_INVERSE;
matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
}
void
@ -504,7 +442,7 @@ cogl_matrix_init_translation (CoglMatrix *matrix,
graphene_matrix_init_translate (&m, &GRAPHENE_POINT3D_INIT (tx, ty, tz));
graphene_matrix_to_cogl_matrix (&m, matrix);
matrix->flags = MAT_FLAG_TRANSLATION | MAT_DIRTY_INVERSE;
matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
_COGL_MATRIX_DEBUG_PRINT (matrix);
}
@ -523,7 +461,7 @@ static void
_cogl_matrix_init_from_array (CoglMatrix *matrix, const float *array)
{
memcpy (matrix, array, 16 * sizeof (float));
matrix->flags = (MAT_FLAG_GENERAL | MAT_DIRTY_ALL);
matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
}
void
@ -545,7 +483,7 @@ _cogl_matrix_init_from_matrix_without_inverse (CoglMatrix *matrix,
const CoglMatrix *src)
{
memcpy (matrix, src, 16 * sizeof (float));
matrix->flags = src->flags | MAT_DIRTY_INVERSE;
matrix->flags = src->flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
}
void
@ -952,7 +890,7 @@ cogl_matrix_look_at (CoglMatrix *matrix,
graphene_matrix_init_look_at (&m, &eye, &center, &up);
graphene_matrix_to_cogl_matrix (&m, &look_at);
look_at.flags = MAT_FLAG_GENERAL_3D | MAT_DIRTY_TYPE | MAT_DIRTY_INVERSE;
look_at.flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
cogl_matrix_multiply (matrix, matrix, &look_at);
}