ANDROID: Use and reinit texture on screen changes

- EVENT_SCREEN_CHANGED must happen _after_ we have a new surface,
  not when the the old surface vanishes. fixes port on galaxy tab
- textures have to be redefined with glTexImage2D() to make
  glTexSubImage2D() not fail on screen changes

2 files changed, 8 insertions, 2 deletions

diff --git a/backends/platform/android/org/inodes/gus/scummvm/ScummVM.java b/backends/platform/android/org/inodes/gus/scummvm/ScummVM.java
index bb4a3dd061..0e905f43a5 100644
--- a/backends/platform/android/org/inodes/gus/scummvm/ScummVM.java
+++ b/backends/platform/android/org/inodes/gus/scummvm/ScummVM.java
@@ -98,11 +98,10 @@ public class ScummVM implements SurfaceHolder.Callback {
 	public void surfaceChanged(SurfaceHolder holder, int format,
 							   int width, int height) {
 		// Disabled while I debug GL problems
-		//pushEvent(new Event(Event.EVENT_SCREEN_CHANGED));
+		pushEvent(new Event(Event.EVENT_SCREEN_CHANGED));
 	}
 
 	public void surfaceDestroyed(SurfaceHolder holder) {
-		pushEvent(new Event(Event.EVENT_SCREEN_CHANGED));
 		try {
 			surfaceLock.acquire();
 		} catch (InterruptedException e) {
diff --git a/backends/platform/android/video.cpp b/backends/platform/android/video.cpp
index e56c0da2af..b9c3f9a1f8 100644
--- a/backends/platform/android/video.cpp
+++ b/backends/platform/android/video.cpp
@@ -135,7 +135,14 @@ GLESTexture::~GLESTexture() {
 }
 
 void GLESTexture::reinitGL() {
+	glDeleteTextures(1, &_texture_name);
 	glGenTextures(1, &_texture_name);
+
+	// bypass allocBuffer() shortcut to reinit the texture properly
+	_texture_width = 0;
+	_texture_height = 0;
+
+	allocBuffer(_surface.w, _surface.h);
 	setDirty();
 }