attachmentsHaveSameDimensions should not compare depths.

src/libANGLE/Framebuffer.cpp

@@ -433,7 +433,9 @@ bool FramebufferState::attachmentsHaveSameDimensions() const
             return false;
         }
 
-        return (attachment.getSize() != attachmentSize.value());
+        const auto &prevSize = attachmentSize.value();
+        const auto &curSize  = attachment.getSize();
+        return (curSize.width != prevSize.width || curSize.height != prevSize.height);
     };
 
     for (const auto &attachment : mColorAttachments)

src/tests/gl_tests/FramebufferTest.cpp

@@ -517,6 +517,25 @@ TEST_P(FramebufferTest_ES3, MultisampleDepthOnly)
     EXPECT_GE(samples, 2);
 }
 
+// Check that we only compare width and height of attachments, not depth.
+TEST_P(FramebufferTest_ES3, AttachmentWith3DLayers)
+{
+    GLTexture texA;
+    glBindTexture(GL_TEXTURE_2D, texA);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 4, 4, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+
+    GLTexture texB;
+    glBindTexture(GL_TEXTURE_3D, texB);
+    glTexImage3D(GL_TEXTURE_3D, 0, GL_RGBA8, 4, 4, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
+
+    GLFramebuffer framebuffer;
+    glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texA, 0);
+    glFramebufferTextureLayer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, texB, 0, 0);
+    ASSERT_GLENUM_EQ(GL_FRAMEBUFFER_COMPLETE, glCheckFramebufferStatus(GL_FRAMEBUFFER));
+    EXPECT_GL_NO_ERROR();
+}
+
 ANGLE_INSTANTIATE_TEST(FramebufferTest_ES3, ES3_D3D11(), ES3_OPENGL(), ES3_OPENGLES());
 
 class FramebufferTest_ES31 : public ANGLETest