Add support for a new developer setting: overdraw debugging
Change-Id: I350ba4486577c3289f82c20938f7a35138778727
diff --git a/libs/hwui/Stencil.cpp b/libs/hwui/Stencil.cpp
index 7dfdf0e..84df82b 100644
--- a/libs/hwui/Stencil.cpp
+++ b/libs/hwui/Stencil.cpp
@@ -37,7 +37,7 @@
void Stencil::enableTest() {
if (mState != kTest) {
enable();
- glStencilFunc(GL_EQUAL, 0x0, 0x1);
+ glStencilFunc(GL_EQUAL, 0x1, 0x1);
// We only want to test, let's keep everything
glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
@@ -56,8 +56,27 @@
}
}
+void Stencil::enableDebugTest(GLint value, bool greater) {
+ enable();
+ glStencilFunc(greater ? GL_LESS : GL_EQUAL, value, 0xffffffff);
+ // We only want to test, let's keep everything
+ glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+ mState = kTest;
+}
+
+void Stencil::enableDebugWrite() {
+ if (mState != kWrite) {
+ enable();
+ glStencilFunc(GL_ALWAYS, 0x1, 0xffffffff);
+ // The test always passes so the first two values are meaningless
+ glStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
+ glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+ mState = kWrite;
+ }
+}
+
void Stencil::enable() {
- if (!mState == kDisabled) {
+ if (mState == kDisabled) {
glEnable(GL_STENCIL_TEST);
}
}