diff options
Diffstat (limited to 'render/pixman/renderer.c')
| -rw-r--r-- | render/pixman/renderer.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/render/pixman/renderer.c b/render/pixman/renderer.c index 7680e171..a5a402f2 100644 --- a/render/pixman/renderer.c +++ b/render/pixman/renderer.c @@ -230,10 +230,14 @@ static void pixman_render_quad_with_matrix(struct wlr_renderer *wlr_renderer, memcpy(m, matrix, sizeof(m)); // TODO get the width/height from the caller instead of extracting them - // TODO detect non rotation with matrix[1] == 0 and matrix[4] == 0 to avoid - // doing the calculation - float width = sqrt(matrix[0] * matrix[0] + matrix[1] * matrix[1]); - float height = sqrt(matrix[3] * matrix[3] + matrix[4] * matrix[4]); + float width, height; + if (matrix[1] == 0.0 && matrix[3] == 0.0) { + width = fabs(matrix[0]); + height = fabs(matrix[4]); + } else { + width = sqrt(matrix[0] * matrix[0] + matrix[1] * matrix[1]); + height = sqrt(matrix[3] * matrix[3] + matrix[4] * matrix[4]); + } wlr_matrix_scale(m, 1.0 / width, 1.0 / height); |