Generate even fewer GL commands

Change-Id: I0f4dcacb03ef5ee7f6ebd501df98bfead5f0a7f8

1 files changed, 13 insertions, 0 deletions

diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
index c3bac5d2eedb..f2205f65974e 100644
--- a/libs/hwui/Caches.cpp
+++ b/libs/hwui/Caches.cpp
@@ -79,6 +79,8 @@ void Caches::init() {
 
     mTexCoordsArrayEnabled = false;
 
+    mScissorX = mScissorY = mScissorWidth = mScissorHeight = 0;
+
     glActiveTexture(gTextureUnits[0]);
     mTextureUnit = 0;
 
@@ -312,6 +314,17 @@ void Caches::activeTexture(GLuint textureUnit) {
     }
 }
 
+void Caches::setScissor(GLint x, GLint y, GLint width, GLint height) {
+    if (x != mScissorX || y != mScissorY || width != mScissorWidth || height != mScissorHeight) {
+        glScissor(x, y, width, height);
+
+        mScissorX = x;
+        mScissorY = y;
+        mScissorWidth = width;
+        mScissorHeight = height;
+    }
+}
+
 TextureVertex* Caches::getRegionMesh() {
     // Create the mesh, 2 triangles and 4 vertices per rectangle in the region
     if (!mRegionMesh) {