From 1dce73936fb394cbdd11b6ea6be344204e6a3119 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Tue, 25 Jul 2017 19:47:07 -0700
Subject: [PATCH] Cleanup.

---
 examples/09-hdr/hdr.cpp | 46 ++++++++++++++++++++++++++++++++++-------
 1 file changed, 38 insertions(+), 8 deletions(-)

diff --git a/examples/09-hdr/hdr.cpp b/examples/09-hdr/hdr.cpp
index af9ab504d..a3875b0cd 100644
--- a/examples/09-hdr/hdr.cpp
+++ b/examples/09-hdr/hdr.cpp
@@ -188,9 +188,7 @@ public:
 
 		m_mesh = meshLoad("meshes/bunny.bin");
 
-		m_fbtextures[0] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::BGRA8, BGFX_TEXTURE_RT | BGFX_TEXTURE_U_CLAMP | BGFX_TEXTURE_V_CLAMP);
-		m_fbtextures[1] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT_WRITE_ONLY);
-		m_fbh = bgfx::createFrameBuffer(BX_COUNTOF(m_fbtextures), m_fbtextures, true);
+		m_fbh.idx = bgfx::kInvalidHandle;
 
 		m_lum[0] = bgfx::createFrameBuffer(128, 128, bgfx::TextureFormat::BGRA8);
 		m_lum[1] = bgfx::createFrameBuffer( 64,  64, bgfx::TextureFormat::BGRA8);
@@ -244,7 +242,11 @@ public:
 		}
 		bgfx::destroy(m_bright);
 		bgfx::destroy(m_blur);
-		bgfx::destroy(m_fbh);
+
+		if (bgfx::isValid(m_fbh) )
+		{
+			bgfx::destroy(m_fbh);
+		}
 
 		bgfx::destroy(m_meshProgram);
 		bgfx::destroy(m_skyProgram);
@@ -277,7 +279,8 @@ public:
 	{
 		if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
 		{
-			if (m_oldWidth  != m_width
+			if (!bgfx::isValid(m_fbh)
+			||  m_oldWidth  != m_width
 			||  m_oldHeight != m_height
 			||  m_oldReset  != m_reset)
 			{
@@ -288,10 +291,37 @@ public:
 
 				uint32_t msaa = (m_reset&BGFX_RESET_MSAA_MASK)>>BGFX_RESET_MSAA_SHIFT;
 
-				bgfx::destroy(m_fbh);
+				if (bgfx::isValid(m_fbh) )
+				{
+					bgfx::destroy(m_fbh);
+				}
+
+				m_fbtextures[0] = bgfx::createTexture2D(
+					  uint16_t(m_width)
+					, uint16_t(m_height)
+					, false
+					, 1
+					, bgfx::TextureFormat::BGRA8
+					, ((msaa + 1) << BGFX_TEXTURE_RT_MSAA_SHIFT) | BGFX_TEXTURE_U_CLAMP | BGFX_TEXTURE_V_CLAMP
+					);
+
+				const uint32_t textureFlags = BGFX_TEXTURE_RT_WRITE_ONLY|( (msaa+1)<<BGFX_TEXTURE_RT_MSAA_SHIFT);
+
+				bgfx::TextureFormat::Enum depthFormat =
+					  bgfx::isTextureValid(0, false, 1, bgfx::TextureFormat::D16,   textureFlags) ? bgfx::TextureFormat::D16
+					: bgfx::isTextureValid(0, false, 1, bgfx::TextureFormat::D24S8, textureFlags) ? bgfx::TextureFormat::D24S8
+					: bgfx::TextureFormat::D32
+					;
+
+				m_fbtextures[1] = bgfx::createTexture2D(
+					  uint16_t(m_width)
+					, uint16_t(m_height)
+					, false
+					, 1
+					, depthFormat
+					, textureFlags
+					);
 
-				m_fbtextures[0] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::BGRA8, ((msaa + 1) << BGFX_TEXTURE_RT_MSAA_SHIFT) | BGFX_TEXTURE_U_CLAMP | BGFX_TEXTURE_V_CLAMP);
-				m_fbtextures[1] = bgfx::createTexture2D(uint16_t(m_width), uint16_t(m_height), false, 1, bgfx::TextureFormat::D16, BGFX_TEXTURE_RT_WRITE_ONLY|( (msaa+1)<<BGFX_TEXTURE_RT_MSAA_SHIFT) );
 				m_fbh = bgfx::createFrameBuffer(BX_COUNTOF(m_fbtextures), m_fbtextures, true);
 			}