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[trace] Convert [1 0 0 1 0 0] to identity

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Simplify the trace/replay by replacing the identity array with the
identity operator.
This commit is contained in:
Chris Wilson 2008-11-04 09:22:28 +00:00
parent 3664b32195
commit 5ba95b7e12
1 changed files with 25 additions and 9 deletions
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34
util/cairo-trace/trace.c
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@ -800,6 +800,14 @@ _get_surface_id (cairo_surface_t *surface)
return _get_id (SURFACE, surface);
}
static bool
_matrix_is_identity (const cairo_matrix_t *m)
{
return m->xx == 1. && m->yx == 0. &&
m->xy == 0. && m->yy == 1. &&
m->x0 == 0. && m->y0 == 0.;
}
#define BUFFER_SIZE 16384
struct _data_stream {
z_stream zlib_stream;
@ -1558,10 +1566,14 @@ cairo_transform (cairo_t *cr, const cairo_matrix_t *matrix)
void
cairo_set_matrix (cairo_t *cr, const cairo_matrix_t *matrix)
{
_emit_cairo_op (cr, "[%g %g %g %g %g %g] set_matrix\n",
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
if (_matrix_is_identity (matrix)) {
_emit_cairo_op (cr, "identity set_matrix\n");
} else {
_emit_cairo_op (cr, "[%g %g %g %g %g %g] set_matrix\n",
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
}
return DLCALL (cairo_set_matrix, cr, matrix);
}
@ -2707,11 +2719,15 @@ cairo_pattern_add_color_stop_rgba (cairo_pattern_t *pattern, double offset, doub
void
cairo_pattern_set_matrix (cairo_pattern_t *pattern, const cairo_matrix_t *matrix)
{
_emit_pattern_op (pattern,
"[%g %g %g %g %g %g] set_matrix\n",
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
if (_matrix_is_identity (matrix)) {
_emit_pattern_op (pattern, "identity set_matrix\n");
} else {
_emit_pattern_op (pattern,
"[%g %g %g %g %g %g] set_matrix\n",
matrix->xx, matrix->yx,
matrix->xy, matrix->yy,
matrix->x0, matrix->y0);
}
return DLCALL (cairo_pattern_set_matrix, pattern, matrix);
}