From 20bd0607e4ff3b5364fafeb9ffcef56b284a98fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Branimir=20Karad=C5=BEi=C4=87?= <branimirkaradzic@gmail.com>
Date: Mon, 8 Oct 2018 10:10:40 -0700
Subject: [PATCH] 01-cubes: Added line strip primitive.

---
 examples/01-cubes/cubes.cpp | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/examples/01-cubes/cubes.cpp b/examples/01-cubes/cubes.cpp
index b26b0f1fd..ea8f8ec6c 100644
--- a/examples/01-cubes/cubes.cpp
+++ b/examples/01-cubes/cubes.cpp
@@ -91,6 +91,13 @@ static const uint16_t s_cubeLineList[] =
 	6, 7,
 };
 
+static const uint16_t s_cubeLineStrip[] =
+{
+	0, 2, 3, 1, 5, 7, 6, 4,
+	0, 2, 6, 4, 5, 7, 3, 1,
+	0,
+};
+
 static const uint16_t s_cubePoints[] =
 {
 	0, 1, 2, 3, 4, 5, 6, 7
@@ -101,6 +108,7 @@ static const char* s_ptNames[]
 	"Triangle List",
 	"Triangle Strip",
 	"Lines",
+	"Line Strip",
 	"Points",
 };
 
@@ -109,8 +117,10 @@ static const uint64_t s_ptState[]
 	UINT64_C(0),
 	BGFX_STATE_PT_TRISTRIP,
 	BGFX_STATE_PT_LINES,
+	BGFX_STATE_PT_LINESTRIP,
 	BGFX_STATE_PT_POINTS,
 };
+BX_STATIC_ASSERT(BX_COUNTOF(s_ptState) == BX_COUNTOF(s_ptNames) );
 
 class ExampleCubes : public entry::AppI
 {
@@ -163,26 +173,32 @@ public:
 			, PosColorVertex::ms_decl
 			);
 
-		// Create static index buffer for triangle strip rendering.
+		// Create static index buffer for triangle list rendering.
 		m_ibh[0] = bgfx::createIndexBuffer(
 			// Static data can be passed with bgfx::makeRef
 			bgfx::makeRef(s_cubeTriList, sizeof(s_cubeTriList) )
 			);
 
-		// Create static index buffer for triangle list rendering.
+		// Create static index buffer for triangle strip rendering.
 		m_ibh[1] = bgfx::createIndexBuffer(
 			// Static data can be passed with bgfx::makeRef
 			bgfx::makeRef(s_cubeTriStrip, sizeof(s_cubeTriStrip) )
 			);
 
-		// Create static index buffer for triangle list rendering.
+		// Create static index buffer for line list rendering.
 		m_ibh[2] = bgfx::createIndexBuffer(
 			// Static data can be passed with bgfx::makeRef
 			bgfx::makeRef(s_cubeLineList, sizeof(s_cubeLineList) )
 			);
 
-		// Create static index buffer for triangle list rendering.
+		// Create static index buffer for line strip rendering.
 		m_ibh[3] = bgfx::createIndexBuffer(
+			// Static data can be passed with bgfx::makeRef
+			bgfx::makeRef(s_cubeLineStrip, sizeof(s_cubeLineStrip) )
+			);
+
+		// Create static index buffer for point list rendering.
+		m_ibh[4] = bgfx::createIndexBuffer(
 			// Static data can be passed with bgfx::makeRef
 			bgfx::makeRef(s_cubePoints, sizeof(s_cubePoints) )
 			);
@@ -333,7 +349,7 @@ public:
 	uint32_t m_debug;
 	uint32_t m_reset;
 	bgfx::VertexBufferHandle m_vbh;
-	bgfx::IndexBufferHandle m_ibh[4];
+	bgfx::IndexBufferHandle m_ibh[BX_COUNTOF(s_ptState)];
 	bgfx::ProgramHandle m_program;
 	int64_t m_timeOffset;
 	int32_t m_pt;