Allow layers with a stencil buffer to be resized on the fly
Bug #7146141
This change moves the resizeLayer() from LayerCache (where it should
never have been anyway) to Layer. This makes a little more sense.
Change-Id: I8b2f9c19c558e738405a58b9e71ec5799fc6be88
diff --git a/libs/hwui/Layer.cpp b/libs/hwui/Layer.cpp
index 1d85b70..79dbfb0 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -54,6 +54,51 @@
deleteTexture();
}
+uint32_t Layer::computeIdealWidth(uint32_t layerWidth) {
+ return uint32_t(ceilf(layerWidth / float(LAYER_SIZE)) * LAYER_SIZE);
+}
+
+uint32_t Layer::computeIdealHeight(uint32_t layerHeight) {
+ return uint32_t(ceilf(layerHeight / float(LAYER_SIZE)) * LAYER_SIZE);
+}
+
+bool Layer::resize(const uint32_t width, const uint32_t height) {
+ uint32_t desiredWidth = computeIdealWidth(width);
+ uint32_t desiredHeight = computeIdealWidth(height);
+
+ if (desiredWidth <= getWidth() && desiredHeight <= getHeight()) {
+ return true;
+ }
+
+ uint32_t oldWidth = getWidth();
+ uint32_t oldHeight = getHeight();
+
+ setSize(desiredWidth, desiredHeight);
+
+ if (fbo) {
+ Caches::getInstance().activeTexture(0);
+ bindTexture();
+ allocateTexture(GL_RGBA, GL_UNSIGNED_BYTE);
+
+ if (glGetError() != GL_NO_ERROR) {
+ setSize(oldWidth, oldHeight);
+ return false;
+ }
+ }
+
+ if (stencil) {
+ bindStencilRenderBuffer();
+ allocateStencilRenderBuffer();
+
+ if (glGetError() != GL_NO_ERROR) {
+ setSize(oldWidth, oldHeight);
+ return false;
+ }
+ }
+
+ return true;
+}
+
void Layer::removeFbo(bool flush) {
if (stencil) {
// TODO: recycle & cache instead of simply deleting