Clear the swizzle cache in TextureStorage11::setData.

src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp

@@ -613,6 +613,8 @@ gl::Error TextureStorage11::setData(const gl::ImageIndex &index,
 {
     ASSERT(!image->isDirty());
 
+    invalidateSwizzleCacheLevel(index.mipIndex);
+
     ID3D11Resource *resource = nullptr;
     ANGLE_TRY(getResource(&resource));
     ASSERT(resource);

src/tests/gl_tests/SwizzleTest.cpp

@@ -399,6 +399,37 @@ TEST_P(SwizzleIntegerTest, RGB8UI_2D)
     runTest2D();
 }
 
+// Test that updating the texture data still generates the correct swizzles
+TEST_P(SwizzleTest, SubUpdate)
+{
+    GLColor data(1, 64, 128, 200);
+    init2DTexture(GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, &data);
+
+    glUseProgram(mProgram);
+    glBindTexture(GL_TEXTURE_2D, mTexture);
+    glUniform1i(mTextureUniformLocation, 0);
+
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_RED);
+
+    glClear(GL_COLOR_BUFFER_BIT);
+    drawQuad(mProgram, "position", 0.5f);
+
+    GLColor expectedData(data.R, data.R, data.R, data.R);
+    EXPECT_PIXEL_COLOR_EQ(0, 0, expectedData);
+
+    GLColor updateData(32, 234, 28, 232);
+    glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &updateData);
+
+    glClear(GL_COLOR_BUFFER_BIT);
+    drawQuad(mProgram, "position", 0.5f);
+
+    GLColor expectedUpdateData(updateData.R, updateData.R, updateData.R, updateData.R);
+    EXPECT_PIXEL_COLOR_EQ(0, 0, expectedUpdateData);
+}
+
 // Use this to select which configurations (e.g. which renderer, which GLES major version) these tests should be run against.
 ANGLE_INSTANTIATE_TEST(SwizzleTest, ES3_D3D11(), ES3_OPENGL(), ES3_OPENGL(3, 3), ES3_OPENGLES());
 ANGLE_INSTANTIATE_TEST(SwizzleIntegerTest,