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https://github.com/brl/mutter.git
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cogl/matrix: Use graphene_matrix_t internally
Instead of listing all matrix cells as floats, and the inverse as a 16-length float array, use graphene_matrix_t in the structure itself. With this commit, all from/to CoglMatrix conversions are gone. It is also not possible to initialize a CoglMatrix using the macro anymore. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1439
This commit is contained in:
Georges Basile Stavracas Neto
parent
51094de8c4
commit
70397c5e72
@ -92,72 +92,24 @@ enum CoglMatrixFlags
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COGL_MATRIX_FLAG_DIRTY_INVERSE = 1 << 1,
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};
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/*
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* Identity matrix.
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*/
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static float identity[16] = {
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1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0
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};
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static inline void
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graphene_matrix_to_cogl_matrix (const graphene_matrix_t *m,
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CoglMatrix *matrix)
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{
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float v[16] = { 0.f, };
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graphene_matrix_to_float (m, v);
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cogl_matrix_init_from_array (matrix, v);
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}
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static inline void
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cogl_matrix_to_graphene_matrix (const CoglMatrix *matrix,
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graphene_matrix_t *m)
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{
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graphene_matrix_init_from_float (m, (float*)matrix);
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}
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void
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cogl_matrix_multiply (CoglMatrix *result,
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const CoglMatrix *a,
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const CoglMatrix *b)
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{
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graphene_matrix_t res;
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graphene_matrix_t ma;
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graphene_matrix_t mb;
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cogl_matrix_to_graphene_matrix (a, &ma);
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cogl_matrix_to_graphene_matrix (b, &mb);
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graphene_matrix_multiply (&mb, &ma, &res);
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graphene_matrix_to_cogl_matrix (&res, result);
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graphene_matrix_multiply (&b->m, &a->m, &result->m);
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result->flags = a->flags | b->flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
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_COGL_MATRIX_DEBUG_PRINT (result);
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}
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/*
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* Print a matrix array.
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*
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* Called by _cogl_matrix_print() to print a matrix or its inverse.
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*/
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static void
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print_matrix_floats (const char *prefix, const float m[16])
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{
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int i;
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for (i = 0;i < 4; i++)
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g_print ("%s\t%f %f %f %f\n", prefix, m[i], m[4+i], m[8+i], m[12+i] );
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}
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void
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_cogl_matrix_prefix_print (const char *prefix, const CoglMatrix *matrix)
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{
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print_matrix_floats (prefix, (float *)matrix);
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graphene_matrix_print (&matrix->m);
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g_print ("%sInverse: \n", prefix);
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if (!(matrix->flags & COGL_MATRIX_FLAG_DIRTY_INVERSE))
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print_matrix_floats (prefix, matrix->inv);
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graphene_matrix_print (&matrix->inv);
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else
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g_print ("%s - not available\n", prefix);
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}
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@ -187,7 +139,6 @@ cogl_debug_matrix_print (const CoglMatrix *matrix)
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static inline gboolean
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calculate_inverse (CoglMatrix *matrix)
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{
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graphene_matrix_t inverse;
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graphene_matrix_t scaled;
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graphene_matrix_t m;
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gboolean invertible;
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@ -195,7 +146,7 @@ calculate_inverse (CoglMatrix *matrix)
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float v[16];
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float scale;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_from_matrix (&m, &matrix->m);
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graphene_matrix_to_float (&m, v);
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pivot = MIN (pivot, v[0]);
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@ -209,14 +160,12 @@ calculate_inverse (CoglMatrix *matrix)
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/* Float precision is a limiting factor */
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graphene_matrix_multiply (&m, &scaled, &m);
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invertible = graphene_matrix_inverse (&m, &inverse);
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invertible = graphene_matrix_inverse (&m, &matrix->inv);
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if (invertible)
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graphene_matrix_multiply (&scaled, &inverse, &inverse);
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graphene_matrix_multiply (&scaled, &matrix->inv, &matrix->inv);
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else
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graphene_matrix_init_identity (&inverse);
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graphene_matrix_to_float (&inverse, matrix->inv);
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graphene_matrix_init_identity (&matrix->inv);
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return invertible;
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}
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@ -245,7 +194,9 @@ cogl_matrix_get_inverse (const CoglMatrix *matrix, CoglMatrix *inverse)
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{
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if (_cogl_matrix_update_inverse ((CoglMatrix *)matrix))
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{
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cogl_matrix_init_from_array (inverse, matrix->inv);
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graphene_matrix_init_from_matrix (&inverse->m, &matrix->inv);
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graphene_matrix_init_from_matrix (&inverse->inv, &matrix->m);
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inverse->flags = COGL_MATRIX_FLAG_NONE;
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return TRUE;
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}
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else
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@ -263,17 +214,14 @@ cogl_matrix_rotate (CoglMatrix *matrix,
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float z)
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{
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graphene_matrix_t rotation;
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graphene_matrix_t m;
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graphene_vec3_t axis;
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unsigned long flags;
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flags = matrix->flags;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_vec3_init (&axis, x, y, z);
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graphene_matrix_init_rotate (&rotation, angle, &axis);
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graphene_matrix_multiply (&rotation, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&rotation, &matrix->m, &matrix->m);
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matrix->flags = flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
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@ -300,18 +248,15 @@ cogl_matrix_frustum (CoglMatrix *matrix,
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float z_far)
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{
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graphene_matrix_t frustum;
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graphene_matrix_t m;
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unsigned long flags;
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flags = matrix->flags;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_frustum (&frustum,
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left, right,
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bottom, top,
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z_near, z_far);
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graphene_matrix_multiply (&frustum, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&frustum, &matrix->m, &matrix->m);
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flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
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matrix->flags = flags;
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@ -348,18 +293,15 @@ cogl_matrix_orthographic (CoglMatrix *matrix,
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float far)
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{
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graphene_matrix_t ortho;
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graphene_matrix_t m;
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unsigned long flags;
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flags = matrix->flags;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_ortho (&ortho,
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left, right,
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top, bottom,
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near, far);
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graphene_matrix_multiply (&ortho, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&ortho, &matrix->m, &matrix->m);
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matrix->flags = flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
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@ -373,15 +315,12 @@ cogl_matrix_scale (CoglMatrix *matrix,
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float sz)
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{
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graphene_matrix_t scale;
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graphene_matrix_t m;
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unsigned long flags;
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flags = matrix->flags;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_scale (&scale, sx, sy, sz);
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graphene_matrix_multiply (&scale, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&scale, &matrix->m, &matrix->m);
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matrix->flags = flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
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@ -395,39 +334,20 @@ cogl_matrix_translate (CoglMatrix *matrix,
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float z)
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{
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graphene_matrix_t translation;
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_translate (&translation,
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&GRAPHENE_POINT3D_INIT (x, y, z));
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graphene_matrix_multiply (&translation, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&translation, &matrix->m, &matrix->m);
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matrix->flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
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_COGL_MATRIX_DEBUG_PRINT (matrix);
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}
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/*
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* Set a matrix to the identity matrix.
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*
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* @mat matrix.
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*
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* Copies ::identity into \p CoglMatrix::m, and into CoglMatrix::inv if
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* not NULL. Sets the matrix type to identity, resets the flags. It
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* doesn't initialize the inverse matrix, it just marks it dirty.
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*/
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static void
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_cogl_matrix_init_identity (CoglMatrix *matrix)
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{
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memcpy (matrix, identity, 16 * sizeof (float));
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matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
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}
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void
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cogl_matrix_init_identity (CoglMatrix *matrix)
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{
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_cogl_matrix_init_identity (matrix);
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graphene_matrix_init_identity (&matrix->m);
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matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
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_COGL_MATRIX_DEBUG_PRINT (matrix);
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}
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@ -437,11 +357,7 @@ cogl_matrix_init_translation (CoglMatrix *matrix,
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float ty,
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float tz)
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{
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graphene_matrix_t m;
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graphene_matrix_init_translate (&m, &GRAPHENE_POINT3D_INIT (tx, ty, tz));
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_init_translate (&matrix->m, &GRAPHENE_POINT3D_INIT (tx, ty, tz));
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matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
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_COGL_MATRIX_DEBUG_PRINT (matrix);
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@ -460,7 +376,7 @@ cogl_matrix_init_translation (CoglMatrix *matrix,
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static void
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_cogl_matrix_init_from_array (CoglMatrix *matrix, const float *array)
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{
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memcpy (matrix, array, 16 * sizeof (float));
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graphene_matrix_init_from_float (&matrix->m, array);
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matrix->flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
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}
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@ -482,7 +398,7 @@ void
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_cogl_matrix_init_from_matrix_without_inverse (CoglMatrix *matrix,
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const CoglMatrix *src)
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{
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memcpy (matrix, src, 16 * sizeof (float));
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graphene_matrix_init_from_matrix (&matrix->m, &src->m);
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matrix->flags = src->flags | COGL_MATRIX_FLAG_DIRTY_INVERSE;
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}
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@ -490,11 +406,8 @@ void
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cogl_matrix_init_from_euler (CoglMatrix *matrix,
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const graphene_euler_t *euler)
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{
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graphene_matrix_t m;
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graphene_matrix_init_identity (&m);
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graphene_matrix_rotate_euler (&m, euler);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_init_identity (&matrix->m);
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graphene_matrix_rotate_euler (&matrix->m, euler);
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}
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void
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@ -557,18 +470,13 @@ cogl_matrix_view_2d_in_perspective (CoglMatrix *matrix,
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gboolean
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cogl_matrix_equal (const void *v1, const void *v2)
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{
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graphene_matrix_t ma;
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graphene_matrix_t mb;
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const CoglMatrix *a = v1;
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const CoglMatrix *b = v2;
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g_return_val_if_fail (v1 != NULL, FALSE);
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g_return_val_if_fail (v2 != NULL, FALSE);
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cogl_matrix_to_graphene_matrix (a, &ma);
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cogl_matrix_to_graphene_matrix (b, &mb);
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return graphene_matrix_equal_fast (&ma, &mb);
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return graphene_matrix_equal_fast (&a->m, &b->m);
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}
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CoglMatrix *
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@ -590,7 +498,7 @@ void
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cogl_matrix_to_float (const CoglMatrix *matrix,
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float *out_array)
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{
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memcpy ((CoglMatrix *) matrix, out_array, 16 * sizeof (float));
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graphene_matrix_to_float (&matrix->m, out_array);
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}
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float
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@ -598,10 +506,7 @@ cogl_matrix_get_value (const CoglMatrix *matrix,
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unsigned int row,
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unsigned int column)
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{
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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return graphene_matrix_get_value (&m, column, row);
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return graphene_matrix_get_value (&matrix->m, column, row);
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}
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void
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@ -611,13 +516,10 @@ cogl_matrix_transform_point (const CoglMatrix *matrix,
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float *z,
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float *w)
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{
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graphene_matrix_t m;
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graphene_vec4_t p;
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graphene_vec4_init (&p, *x, *y, *z, *w);
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_transform_vec4 (&m, &p, &p);
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graphene_matrix_transform_vec4 (&matrix->m, &p, &p);
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*x = graphene_vec4_get_x (&p);
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*y = graphene_vec4_get_y (&p);
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@ -654,8 +556,7 @@ init_matrix_rows (const CoglMatrix *matrix,
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graphene_matrix_t m;
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unsigned int i;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_transpose (&m, &m);
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graphene_matrix_transpose (&matrix->m, &m);
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for (i = 0; i < n_rows; i++)
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graphene_matrix_get_row (&m, i, &rows[i]);
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@ -860,10 +761,7 @@ cogl_matrix_project_points (const CoglMatrix *matrix,
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gboolean
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cogl_matrix_is_identity (const CoglMatrix *matrix)
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{
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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return graphene_matrix_is_identity (&m);
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return graphene_matrix_is_identity (&matrix->m);
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}
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void
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@ -878,7 +776,6 @@ cogl_matrix_look_at (CoglMatrix *matrix,
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float world_up_y,
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float world_up_z)
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{
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graphene_matrix_t m;
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graphene_vec3_t eye;
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graphene_vec3_t center;
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graphene_vec3_t up;
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@ -888,9 +785,7 @@ cogl_matrix_look_at (CoglMatrix *matrix,
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graphene_vec3_init (¢er, object_x, object_y, object_z);
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graphene_vec3_init (&up, world_up_x, world_up_y, world_up_z);
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graphene_matrix_init_look_at (&m, &eye, ¢er, &up);
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graphene_matrix_to_cogl_matrix (&m, &look_at);
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graphene_matrix_init_look_at (&look_at.m, &eye, ¢er, &up);
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look_at.flags = COGL_MATRIX_FLAG_DIRTY_INVERSE;
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cogl_matrix_multiply (matrix, matrix, &look_at);
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@ -899,16 +794,11 @@ cogl_matrix_look_at (CoglMatrix *matrix,
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void
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cogl_matrix_transpose (CoglMatrix *matrix)
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{
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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/* We don't need to do anything if the matrix is the identity matrix */
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if (graphene_matrix_is_identity (&m))
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if (graphene_matrix_is_identity (&matrix->m))
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return;
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graphene_matrix_transpose (&m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_transpose (&matrix->m, &matrix->m);
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}
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GType
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@ -922,14 +812,12 @@ cogl_matrix_skew_xy (CoglMatrix *matrix,
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float factor)
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{
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graphene_matrix_t skew;
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_identity (&skew);
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graphene_matrix_skew_xy (&skew, factor);
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graphene_matrix_multiply (&skew, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&skew, &matrix->m, &matrix->m);
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matrix->flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
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_COGL_MATRIX_DEBUG_PRINT (matrix);
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}
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@ -938,14 +826,12 @@ cogl_matrix_skew_xz (CoglMatrix *matrix,
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float factor)
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{
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graphene_matrix_t skew;
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graphene_matrix_t m;
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cogl_matrix_to_graphene_matrix (matrix, &m);
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graphene_matrix_init_identity (&skew);
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graphene_matrix_skew_xz (&skew, factor);
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graphene_matrix_multiply (&skew, &m, &m);
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graphene_matrix_to_cogl_matrix (&m, matrix);
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graphene_matrix_multiply (&skew, &matrix->m, &matrix->m);
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matrix->flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
|
||||
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
||||
}
|
||||
|
||||
@ -954,13 +840,11 @@ cogl_matrix_skew_yz (CoglMatrix *matrix,
|
||||
float factor)
|
||||
{
|
||||
graphene_matrix_t skew;
|
||||
graphene_matrix_t m;
|
||||
|
||||
cogl_matrix_to_graphene_matrix (matrix, &m);
|
||||
graphene_matrix_init_identity (&skew);
|
||||
graphene_matrix_skew_yz (&skew, factor);
|
||||
graphene_matrix_multiply (&skew, &m, &m);
|
||||
graphene_matrix_to_cogl_matrix (&m, matrix);
|
||||
graphene_matrix_multiply (&skew, &matrix->m, &matrix->m);
|
||||
|
||||
matrix->flags |= COGL_MATRIX_FLAG_DIRTY_INVERSE;
|
||||
_COGL_MATRIX_DEBUG_PRINT (matrix);
|
||||
}
|
||||
|
||||
@ -87,45 +87,14 @@ G_BEGIN_DECLS
|
||||
struct _CoglMatrix
|
||||
{
|
||||
/*< private >*/
|
||||
|
||||
/* column 0 */
|
||||
float xx;
|
||||
float yx;
|
||||
float zx;
|
||||
float wx;
|
||||
|
||||
/* column 1 */
|
||||
float xy;
|
||||
float yy;
|
||||
float zy;
|
||||
float wy;
|
||||
|
||||
/* column 2 */
|
||||
float xz;
|
||||
float yz;
|
||||
float zz;
|
||||
float wz;
|
||||
|
||||
/* column 3 */
|
||||
float xw;
|
||||
float yw;
|
||||
float zw;
|
||||
float ww;
|
||||
graphene_matrix_t m;
|
||||
|
||||
/* Note: we may want to extend this later with private flags
|
||||
* and a cache of the inverse transform matrix. */
|
||||
float COGL_PRIVATE (inv)[16];
|
||||
graphene_matrix_t COGL_PRIVATE (inv);
|
||||
unsigned long COGL_PRIVATE (flags);
|
||||
unsigned long COGL_PRIVATE (_padding3);
|
||||
};
|
||||
COGL_STRUCT_SIZE_ASSERT (CoglMatrix, 128 + sizeof (unsigned long) * 2);
|
||||
|
||||
#define COGL_MATRIX_INIT_IDENTITY (CoglMatrix) { \
|
||||
1.0f, 0.0f, 0.0f, 0.0f, \
|
||||
0.0f, 1.0f, 0.0f, 0.0f, \
|
||||
0.0f, 0.0f, 1.0f, 0.0f, \
|
||||
0.0f, 0.0f, 0.0f, 1.0f, \
|
||||
}
|
||||
|
||||
/**
|
||||
* cogl_matrix_init_identity:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user