diff --git a/src/bgfx.cpp b/src/bgfx.cpp
index 3163ad004..6933d592c 100644
--- a/src/bgfx.cpp
+++ b/src/bgfx.cpp
@@ -4328,6 +4328,103 @@ namespace bgfx
 		s_ctx->destroyProgram(_handle);
 	}
 
+	void checkFrameBuffer(uint8_t _num, const Attachment* _attachment)
+	{
+		uint8_t color = 0;
+		uint8_t depth = 0;
+
+		const TextureRef& firstTexture = s_ctx->m_textureRef[_attachment[0].handle.idx];
+
+		const uint16_t firstAttachmentWidth  = bx::max<uint16_t>(firstTexture.m_width  >> _attachment[0].mip, 1);
+		const uint16_t firstAttachmentHeight = bx::max<uint16_t>(firstTexture.m_height >> _attachment[0].mip, 1);
+		BX_UNUSED(firstAttachmentWidth, firstAttachmentHeight);
+
+		for (uint32_t ii = 0; ii < _num; ++ii)
+		{
+			const TextureHandle texHandle = _attachment[ii].handle;
+			BGFX_CHECK_HANDLE("createFrameBuffer texture", s_ctx->m_textureHandle, texHandle);
+			const TextureRef& tr = s_ctx->m_textureRef[texHandle.idx];
+
+			BX_ASSERT(_attachment[ii].mip < tr.m_numMips
+				, "Invalid texture mip level (%d > %d)."
+				, _attachment[ii].mip
+				, tr.m_numMips - 1
+				);
+
+			const uint16_t numLayers = tr.is3D()
+				? bx::max<uint16_t>(tr.m_depth >> _attachment[ii].mip, 1)
+				: tr.m_numLayers * (tr.isCubeMap() ? 6 : 1)
+				;
+			BX_UNUSED(numLayers);
+
+			BX_ASSERT( (_attachment[ii].layer + _attachment[ii].numLayers) <= numLayers
+				, "Invalid texture layer range (layer %d + num %d > total %d)."
+				, _attachment[ii].layer
+				, _attachment[ii].numLayers
+				, numLayers
+				);
+
+			BX_ASSERT(_attachment[0].numLayers == _attachment[ii].numLayers
+				, "Mismatch in attachment layer count (%d != %d)."
+				, _attachment[ii].numLayers
+				, _attachment[0].numLayers
+				);
+
+			BX_ASSERT(firstTexture.m_bbRatio == tr.m_bbRatio
+				, "Mismatch in texture back-buffer ratio."
+				);
+
+			BX_ASSERT(firstTexture.m_numSamples == tr.m_numSamples
+				, "Mismatch in texture sample count (%d != %d)."
+				, tr.m_numSamples
+				, firstTexture.m_numSamples
+				);
+
+			if (BackbufferRatio::Count == firstTexture.m_bbRatio)
+			{
+				const uint16_t width  = bx::max<uint16_t>(tr.m_width  >> _attachment[ii].mip, 1);
+				const uint16_t height = bx::max<uint16_t>(tr.m_height >> _attachment[ii].mip, 1);
+				BX_UNUSED(width, height);
+
+				BX_ASSERT(width == firstAttachmentWidth && height == firstAttachmentHeight
+					, "Mismatch in texture size (%dx%d != %dx%d)."
+					, width
+					, height
+					, firstAttachmentWidth, firstAttachmentHeight
+					);
+			}
+
+			if (bimg::isDepth(bimg::TextureFormat::Enum(tr.m_format) ) )
+			{
+				++depth;
+			}
+			else
+			{
+				++color;
+			}
+
+			BX_ASSERT(0 == (tr.m_flags & BGFX_TEXTURE_READ_BACK)
+				, "Frame buffer texture cannot be read back texture. Attachment %d: has flags 0x%016" PRIx64 "."
+				, ii
+				, tr.m_flags
+				);
+
+			BX_ASSERT(0 != (tr.m_flags & BGFX_TEXTURE_RT_MASK)
+				, "Frame buffer texture is not created with one of `BGFX_TEXTURE_RT*` flags. Attachment %d: has flags 0x%016" PRIx64 "."
+				, ii
+				, tr.m_flags
+				);
+		}
+
+		BX_ASSERT(true
+			&& color <= g_caps.limits.maxFBAttachments
+			&& depth <= 1
+			, "Too many frame buffer attachments (num attachments: %d, max color attachments %d)!"
+			, _num
+			, g_caps.limits.maxFBAttachments
+			);
+	}
+
 	static void isTextureValid(uint16_t _depth, bool _cubeMap, uint16_t _numLayers, TextureFormat::Enum _format, uint64_t _flags, bx::Error* _err)
 	{
 		BX_ERROR_SCOPE(_err);
diff --git a/src/bgfx_p.h b/src/bgfx_p.h
index cf8ec8518..2013ef085 100644
--- a/src/bgfx_p.h
+++ b/src/bgfx_p.h
@@ -73,6 +73,7 @@ namespace bgfx
 #endif // BX_COMPILER_CLANG_ANALYZER
 
 	void trace(const char* _filePath, uint16_t _line, const char* _format, ...);
+	void checkFrameBuffer(uint8_t _num, const Attachment* _attachment);
 
 	inline bool operator==(const VertexLayoutHandle& _lhs, const VertexLayoutHandle& _rhs) { return _lhs.idx == _rhs.idx; }
 	inline bool operator==(const UniformHandle& _lhs,    const UniformHandle&    _rhs) { return _lhs.idx == _rhs.idx; }
@@ -4529,98 +4530,6 @@ namespace bgfx
 			cmdbuf.write(_mem);
 		}
 
-		void checkFrameBuffer(uint8_t _num, const Attachment* _attachment) const
-		{
-			uint8_t color = 0;
-			uint8_t depth = 0;
-
-			const TextureRef& firstTexture = m_textureRef[_attachment[0].handle.idx];
-
-			const uint16_t firstAttachmentWidth  = bx::max<uint16_t>(firstTexture.m_width  >> _attachment[0].mip, 1);
-			const uint16_t firstAttachmentHeight = bx::max<uint16_t>(firstTexture.m_height >> _attachment[0].mip, 1);
-
-			for (uint32_t ii = 0; ii < _num; ++ii)
-			{
-				const TextureHandle texHandle = _attachment[ii].handle;
-				BGFX_CHECK_HANDLE("createFrameBuffer texture", m_textureHandle, texHandle);
-				const TextureRef& tr = m_textureRef[texHandle.idx];
-
-				BX_ASSERT(
-					  _attachment[ii].mip < tr.m_numMips
-					, "Invalid texture mip level (%d > %d)."
-					, _attachment[ii].mip
-					, tr.m_numMips - 1
-				);
-				const uint16_t numLayers = tr.is3D()
-					? bx::max<uint16_t>(tr.m_depth >> _attachment[ii].mip, 1)
-					: tr.m_numLayers * (tr.isCubeMap() ? 6 : 1)
-					;
-				BX_ASSERT(
-					  (_attachment[ii].layer + _attachment[ii].numLayers) <= numLayers
-					, "Invalid texture layer range (layer %d + num %d > total %d)."
-					, _attachment[ii].layer
-					, _attachment[ii].numLayers
-					, numLayers
-					);
-
-				BX_ASSERT(
-					  _attachment[0].numLayers == _attachment[ii].numLayers
-					, "Mismatch in attachment layer count (%d != %d)."
-					, _attachment[ii].numLayers
-					, _attachment[0].numLayers
-					);
-				BX_ASSERT(firstTexture.m_bbRatio == tr.m_bbRatio, "Mismatch in texture back-buffer ratio.");
-				BX_ASSERT(
-					  firstTexture.m_numSamples == tr.m_numSamples
-					, "Mismatch in texture sample count (%d != %d)."
-					, tr.m_numSamples
-					, firstTexture.m_numSamples
-					);
-				if (BackbufferRatio::Count == firstTexture.m_bbRatio)
-				{
-					const uint16_t width  = bx::max<uint16_t>(tr.m_width  >> _attachment[ii].mip, 1);
-					const uint16_t height = bx::max<uint16_t>(tr.m_height >> _attachment[ii].mip, 1);
-					BX_ASSERT(
-						  width == firstAttachmentWidth && height == firstAttachmentHeight
-						, "Mismatch in texture size (%dx%d != %dx%d)."
-						, width, height
-						, firstAttachmentWidth, firstAttachmentHeight
-						);
-				}
-
-				if (bimg::isDepth(bimg::TextureFormat::Enum(tr.m_format) ) )
-				{
-					++depth;
-				}
-				else
-				{
-					++color;
-				}
-
-				BX_ASSERT(
-					  0 == (tr.m_flags & BGFX_TEXTURE_READ_BACK)
-					, "Frame buffer texture cannot be read back texture. Attachment %d: has flags 0x%016" PRIx64 "."
-					, ii
-					, tr.m_flags
-					);
-
-				BX_ASSERT(
-					  0 != (tr.m_flags & BGFX_TEXTURE_RT_MASK)
-					, "Frame buffer texture is not created with one of `BGFX_TEXTURE_RT*` flags. Attachment %d: has flags 0x%016" PRIx64 "."
-					, ii
-					, tr.m_flags
-					);
-			}
-
-			BX_ASSERT(true
-				&& color <= g_caps.limits.maxFBAttachments
-				&& depth <= 1
-				, "Too many frame buffer attachments (num attachments: %d, max color attachments %d)!"
-				, _num
-				, g_caps.limits.maxFBAttachments
-				);
-		}
-
 		BGFX_API_FUNC(FrameBufferHandle createFrameBuffer(uint8_t _num, const Attachment* _attachment, bool _destroyTextures) )
 		{
 			BGFX_MUTEX_SCOPE(m_resourceApiLock);