diff --git a/src/libANGLE/es3_copy_conversion_table_autogen.cpp b/src/libANGLE/es3_copy_conversion_table_autogen.cpp
index 3647445c50..d0d46fa14d 100644
--- a/src/libANGLE/es3_copy_conversion_table_autogen.cpp
+++ b/src/libANGLE/es3_copy_conversion_table_autogen.cpp
@@ -35,6 +35,8 @@ bool ValidES3CopyConversion(GLenum textureFormat, GLenum framebufferFormat)
             {
                 case GL_BGRA_EXT:
                     return true;
+                case GL_RGBA:
+                    return true;
                 default:
                     break;
             }
diff --git a/src/libANGLE/validationES1.cpp b/src/libANGLE/validationES1.cpp
index 59f3d25005..9c6107cd74 100644
--- a/src/libANGLE/validationES1.cpp
+++ b/src/libANGLE/validationES1.cpp
@@ -16,7 +16,9 @@
 #include "libANGLE/queryutils.h"
 #include "libANGLE/validationES.h"
 
-#define ANGLE_VALIDATE_IS_GLES1(state, errors, entryPoint)                                \
+// Hack(Pojav): allow callung ES1 functions in ES2 context for gl4es
+#define ANGLE_VALIDATE_IS_GLES1(state, errors, entryPoint)
+#define ANGLE_VALIDATE_IS_GLES1_REAL(state, errors, entryPoint)                           \
     do                                                                                    \
     {                                                                                     \
         if (state.getClientType() != EGL_OPENGL_API && state.getClientMajorVersion() > 1) \
@@ -27,7 +29,7 @@
     } while (0)
 
 #define ANGLE_VALIDATE_IS_GLES1_CONTEXT(context, entryPoint) \
-    ANGLE_VALIDATE_IS_GLES1(context->getPrivateState(),      \
+    ANGLE_VALIDATE_IS_GLES1_REAL(context->getPrivateState(),      \
                             context->getMutableErrorSetForValidation(), entryPoint)
 
 namespace gl
diff --git a/src/libANGLE/validationES3.cpp b/src/libANGLE/validationES3.cpp
index 6f06eab7e3..dc184e2eab 100644
--- a/src/libANGLE/validationES3.cpp
+++ b/src/libANGLE/validationES3.cpp
@@ -1023,6 +1023,7 @@ bool GetUnsizedEffectiveInternalFormatInfo(const InternalFormat &srcFormat,
         { GL_RGBA4,                  GL_RGBA,            1,    4, 1,    4, 1,    4, 1,    4 },
         { GL_RGB5_A1,                GL_RGBA,            5,    5, 5,    5, 5,    5, 1,    1 },
         { GL_RGBA8,                  GL_RGBA,            5,    8, 5,    8, 5,    8, 5,    8 },
+        { GL_RGBA8,                  GL_BGRA_EXT,        5,    8, 5,    8, 5,    8, 5,    8 },
     };
     // clang-format on