Revert "Revert "[RenderEngine] Rebind output texture when unbinding framebuffer""

This reverts commit e76fc0c4a0dc80d564ecd6b99ab5b6913e0cd65d.

Reason for revert: Alec found another path to rebind output texture that
doesn't trip the emulator bug https://b.corp.google.com/issues/154665573
(included in the CL after this)

Bug: b/140158384

Change-Id: I8ae60b99d6baf2da81997889df5198d2960d4a58
diff --git a/libs/renderengine/gl/GLFramebuffer.cpp b/libs/renderengine/gl/GLFramebuffer.cpp
index cb0d5cf..383486b 100644
--- a/libs/renderengine/gl/GLFramebuffer.cpp
+++ b/libs/renderengine/gl/GLFramebuffer.cpp
@@ -68,11 +68,11 @@
     return true;
 }
 
-void GLFramebuffer::allocateBuffers(uint32_t width, uint32_t height) {
+void GLFramebuffer::allocateBuffers(uint32_t width, uint32_t height, void* data) {
     ATRACE_CALL();
 
     glBindTexture(GL_TEXTURE_2D, mTextureName);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);