From 475fea23bc1061461168fd99de41ebc8ee321b3b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=91=D1=80=D0=B0=D0=BD=D0=B8=D0=BC=D0=B8=D1=80=20=D0=9A?=
 =?UTF-8?q?=D0=B0=D1=80=D0=B0=D1=9F=D0=B8=D1=9B?=
 <branimirkaradzic@gmail.com>
Date: Sun, 29 Nov 2020 17:55:06 -0800
Subject: [PATCH] Skip reset when nothing changes.

---
 src/bgfx_p.h | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/bgfx_p.h b/src/bgfx_p.h
index d49209a5a..e875f4818 100644
--- a/src/bgfx_p.h
+++ b/src/bgfx_p.h
@@ -2985,6 +2985,17 @@ namespace bgfx
 
 		BGFX_API_FUNC(void reset(uint32_t _width, uint32_t _height, uint32_t _flags, TextureFormat::Enum _format) )
 		{
+			const TextureFormat::Enum format = TextureFormat::Count != _format ? _format : m_init.resolution.format;
+
+			if (m_init.resolution.format == format
+			&&  m_init.resolution.width  == _width
+			&&  m_init.resolution.height == _height
+			&&  m_init.resolution.reset  == _flags)
+			{
+				// Nothing changed, ignore request.
+				return;
+			}
+
 			BX_WARN(g_caps.limits.maxTextureSize >= _width
 				&&  g_caps.limits.maxTextureSize >= _height
 				, "Frame buffer resolution width or height can't be larger than limits.maxTextureSize %d (width %d, height %d)."
@@ -2992,7 +3003,7 @@ namespace bgfx
 				, _width
 				, _height
 				);
-			m_init.resolution.format = TextureFormat::Count != _format ? _format : m_init.resolution.format;
+			m_init.resolution.format = format;
 			m_init.resolution.width  = bx::clamp(_width,  1u, g_caps.limits.maxTextureSize);
 			m_init.resolution.height = bx::clamp(_height, 1u, g_caps.limits.maxTextureSize);
 			m_init.resolution.reset  = 0