From 2df0a41918ac60afbab3ff6f8e81d3f739f96018 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: Mon, 1 Nov 2021 08:43:22 -0700
Subject: [PATCH] 08-update: Added blit test.

---
 examples/08-update/update.cpp | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/examples/08-update/update.cpp b/examples/08-update/update.cpp
index 1c43476c9..5ff34279a 100644
--- a/examples/08-update/update.cpp
+++ b/examples/08-update/update.cpp
@@ -424,6 +424,10 @@ public:
 
 		m_texture2dData = (uint8_t*)malloc(kTexture2dSize*kTexture2dSize*4);
 
+		m_blitTestA = bgfx::createTexture2D(16, 16, false, 1, bgfx::TextureFormat::Enum::RGBA8, BGFX_TEXTURE_BLIT_DST);
+		m_blitTestB = bgfx::createTexture2D(16, 16, false, 1, bgfx::TextureFormat::Enum::RGBA8, BGFX_TEXTURE_BLIT_DST);
+		m_blitTestC = bgfx::createTexture2D(16, 16, false, 1, bgfx::TextureFormat::Enum::RGBA8, BGFX_TEXTURE_BLIT_DST);
+
 		m_rr = m_rng.gen()%255;
 		m_gg = m_rng.gen()%255;
 		m_bb = m_rng.gen()%255;
@@ -449,6 +453,10 @@ public:
 		// Cleanup.
 		free(m_texture2dData);
 
+		bgfx::destroy(m_blitTestA);
+		bgfx::destroy(m_blitTestB);
+		bgfx::destroy(m_blitTestC);
+
 		for (uint32_t ii = 0; ii < BX_COUNTOF(m_textures); ++ii)
 		{
 			bgfx::destroy(m_textures[ii]);
@@ -461,7 +469,7 @@ public:
 
 		bgfx::destroy(m_texture2d);
 
-		for (uint32_t ii = 0; ii<BX_COUNTOF(m_textureCube); ++ii)
+		for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCube); ++ii)
 		{
 			if (bgfx::isValid(m_textureCube[ii]))
 			{
@@ -469,7 +477,7 @@ public:
 			}
 		}
 
-		for (uint32_t ii = 0; ii<BX_COUNTOF(m_textureCubeFaceFb); ++ii)
+		for (uint32_t ii = 0; ii < BX_COUNTOF(m_textureCubeFaceFb); ++ii)
 		{
 			if (bgfx::isValid(m_textureCubeFaceFb[ii]))
 			{
@@ -479,15 +487,19 @@ public:
 
 		bgfx::destroy(m_ibh);
 		bgfx::destroy(m_vbh);
+
 		if (bgfx::isValid(m_program3d) )
 		{
 			bgfx::destroy(m_program3d);
 		}
+
 		bgfx::destroy(m_programCmp);
+
 		if (bgfx::isValid(m_programCompute) )
 		{
 			bgfx::destroy(m_programCompute);
 		}
+
 		bgfx::destroy(m_program);
 		bgfx::destroy(u_time);
 		bgfx::destroy(s_texColor);
@@ -909,6 +921,18 @@ public:
 				ImGuiDescription(mtx[12], mtx[13], mtx[14], worldToScreen, descSampler[ii]);
 			}
 
+			bgfx::blit(1, m_blitTestA, 0, 0, m_blitTestB, 0, 0);
+			bgfx::blit(1, m_blitTestC, 0, 0, m_blitTestA, 0, 0);
+
+			bgfx::blit(1, m_blitTestA, 0, 0, m_blitTestB, 0, 0);
+			bgfx::blit(1, m_blitTestB, 0, 0, m_blitTestC, 0, 0);
+
+			bgfx::blit(1, m_blitTestA, 0, 0, m_blitTestB, 0, 0);
+			bgfx::blit(1, m_blitTestB, 0, 0, m_blitTestA, 0, 0);
+
+			bgfx::blit(1, m_blitTestB, 0, 0, m_blitTestA, 0, 0);
+			bgfx::blit(1, m_blitTestC, 0, 0, m_blitTestB, 0, 0);
+
 			imguiEndFrame();
 
 			// Advance to next frame. Rendering thread will be kicked to
@@ -952,6 +976,9 @@ public:
 	bgfx::TextureHandle m_textures3d[3];
 	bgfx::TextureHandle m_texture2d;
 	bgfx::TextureHandle m_textureCube[4];
+	bgfx::TextureHandle m_blitTestA;
+	bgfx::TextureHandle m_blitTestB;
+	bgfx::TextureHandle m_blitTestC;
 	bgfx::FrameBufferHandle m_textureCubeFaceFb[6];
 	bgfx::IndexBufferHandle m_ibh;
 	bgfx::VertexBufferHandle m_vbh;