From e8cb9c14309b0f01c0159efdf9a7198f44a62642 Mon Sep 17 00:00:00 2001 From: Romain Guy Date: Mon, 4 Oct 2010 14:14:11 -0700 Subject: Apply bilinear filtering on text only when necessary. Change-Id: Ic903f4b5d30e9c92528c6291941896efe4729ee3 --- libs/hwui/Matrix.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'libs/hwui/Matrix.cpp') diff --git a/libs/hwui/Matrix.cpp b/libs/hwui/Matrix.cpp index c698b5abb9c5..219fd5e12759 100644 --- a/libs/hwui/Matrix.cpp +++ b/libs/hwui/Matrix.cpp @@ -53,6 +53,15 @@ void Matrix4::loadIdentity() { mSimpleMatrix = true; } +#define EPSILON 0.00001f +#define almost(u, v) (fabs((u) - (v)) < EPSILON) + +bool Matrix4::changesBounds() { + return !(almost(data[0], 1.0f) && almost(data[1], 0.0f) && almost(data[2], 0.0f) && + almost(data[4], 0.0f) && almost(data[5], 1.0f) && almost(data[6], 0.0f) && + almost(data[8], 0.0f) && almost(data[9], 0.0f) && almost(data[10], 1.0f)); +} + void Matrix4::load(const float* v) { memcpy(data, v, sizeof(data)); mSimpleMatrix = false; -- cgit v1.2.3-59-g8ed1b