Revert "Apply transform to textures on android (#4486)" (#4502)

This reverts commit eee4a1ed.

Original commit caused external_ui integration test failure on Android.

shell/platform/android/android_external_texture_gl.cc

@@ -4,6 +4,7 @@
 
 #include "flutter/shell/platform/android/android_external_texture_gl.h"
 
+// #include <GLES/gl.h>
 #include <GLES/glext.h>
 #include "flutter/common/threads.h"
 #include "flutter/shell/platform/android/platform_view_android_jni.h"
@@ -14,7 +15,7 @@ namespace shell {
 AndroidExternalTextureGL::AndroidExternalTextureGL(
     int64_t id,
     const fml::jni::JavaObjectWeakGlobalRef& surfaceTexture)
-    : Texture(id), surface_texture_(surfaceTexture), transform(SkMatrix::I()) {}
+    : Texture(id), surface_texture_(surfaceTexture) {}
 
 AndroidExternalTextureGL::~AndroidExternalTextureGL() = default;
 
@@ -43,42 +44,16 @@ void AndroidExternalTextureGL::Paint(SkCanvas& canvas, const SkRect& bounds) {
     new_frame_ready_ = false;
   }
   GrGLTextureInfo textureInfo = {GL_TEXTURE_EXTERNAL_OES, texture_name_};
-  GrBackendTexture backendTexture(1, 1, kRGBA_8888_GrPixelConfig, textureInfo);
+  GrBackendTexture backendTexture(bounds.width(), bounds.height(),
+                                  kRGBA_8888_GrPixelConfig, textureInfo);
   sk_sp<SkImage> image = SkImage::MakeFromTexture(
       canvas.getGrContext(), backendTexture, kTopLeft_GrSurfaceOrigin,
       SkAlphaType::kPremul_SkAlphaType, nullptr);
   if (image) {
-    SkAutoCanvasRestore autoRestore(&canvas, true);
-    canvas.translate(bounds.x(), bounds.y());
-    canvas.scale(bounds.width(), bounds.height());
-    if (!transform.isIdentity()) {
-      SkMatrix transformAroundCenter(transform);
-
-      transformAroundCenter.preTranslate(-0.5, -0.5);
-      transformAroundCenter.postScale(1, -1);
-      transformAroundCenter.postTranslate(0.5, 0.5);
-      canvas.concat(transformAroundCenter);
-    }
-    canvas.drawImage(image, 0, 0);
+    canvas.drawImage(image, bounds.x(), bounds.y());
   }
 }
 
-void AndroidExternalTextureGL::UpdateTransform() {
-  JNIEnv* env = fml::jni::AttachCurrentThread();
-  fml::jni::ScopedJavaLocalRef<jobject> surfaceTexture =
-      surface_texture_.get(env);
-  jfloatArray transformMatrix = env->NewFloatArray(16);
-  SurfaceTextureGetTransformMatrix(env, surfaceTexture.obj(), transformMatrix);
-  float* m = env->GetFloatArrayElements(transformMatrix, nullptr);
-  SkScalar matrix3[] = {
-      m[0], m[1], m[2],   //
-      m[4], m[5], m[6],   //
-      m[8], m[9], m[10],  //
-  };
-  env->ReleaseFloatArrayElements(transformMatrix, m, JNI_ABORT);
-  transform.set9(matrix3);
-}
-
 void AndroidExternalTextureGL::OnGrContextDestroyed() {
   ASSERT_IS_GPU_THREAD;
   if (state_ == AttachmentState::attached) {
@@ -102,7 +77,6 @@ void AndroidExternalTextureGL::Update() {
       surface_texture_.get(env);
   if (!surfaceTexture.is_null()) {
     SurfaceTextureUpdateTexImage(env, surfaceTexture.obj());
-    UpdateTransform();
   }
 }
 

shell/platform/android/android_external_texture_gl.h

@@ -35,8 +35,6 @@ class AndroidExternalTextureGL : public flow::Texture {
 
   void Detach();
 
-  void UpdateTransform();
-
   enum class AttachmentState { uninitialized, attached, detached };
 
   fml::jni::JavaObjectWeakGlobalRef surface_texture_;
@@ -47,8 +45,6 @@ class AndroidExternalTextureGL : public flow::Texture {
 
   GLuint texture_name_ = 0;
 
-  SkMatrix transform;
-
   FXL_DISALLOW_COPY_AND_ASSIGN(AndroidExternalTextureGL);
 };
 

shell/platform/android/platform_view_android_jni.cc

@@ -90,15 +90,6 @@ void SurfaceTextureUpdateTexImage(JNIEnv* env, jobject obj) {
   FXL_CHECK(CheckException(env));
 }
 
-static jmethodID g_get_transform_matrix_method = nullptr;
-void SurfaceTextureGetTransformMatrix(JNIEnv* env,
-                                      jobject obj,
-                                      jfloatArray result) {
-  ASSERT_IS_GPU_THREAD;
-  env->CallVoidMethod(obj, g_get_transform_matrix_method, result);
-  FXL_CHECK(CheckException(env));
-}
-
 static jmethodID g_detach_from_gl_context_method = nullptr;
 void SurfaceTextureDetachFromGLContext(JNIEnv* env, jobject obj) {
   ASSERT_IS_GPU_THREAD;
@@ -511,13 +502,6 @@ bool PlatformViewAndroid::Register(JNIEnv* env) {
     return false;
   }
 
-  g_get_transform_matrix_method = env->GetMethodID(
-      g_surface_texture_class->obj(), "getTransformMatrix", "([F)V");
-
-  if (g_get_transform_matrix_method == nullptr) {
-    return false;
-  }
-
   g_detach_from_gl_context_method = env->GetMethodID(
       g_surface_texture_class->obj(), "detachFromGLContext", "()V");
 

shell/platform/android/platform_view_android_jni.h

@@ -33,10 +33,6 @@ void SurfaceTextureAttachToGLContext(JNIEnv* env, jobject obj, jint textureId);
 
 void SurfaceTextureUpdateTexImage(JNIEnv* env, jobject obj);
 
-void SurfaceTextureGetTransformMatrix(JNIEnv* env,
-                                      jobject obj,
-                                      jfloatArray result);
-
 void SurfaceTextureDetachFromGLContext(JNIEnv* env, jobject obj);
 
 }  // namespace shell