Added ability to set start vertex when setting vertex buffer.

examples/08-update/update.cpp

@@ -65,7 +65,7 @@ static PosColorVertex s_cubeVertices[28] =
 	{ 1.0f, -1.0f,  1.0f,  2.0f, -2.0f,  2.0f },
 };
 
-static const uint16_t s_cubeIndices[42] =
+static const uint16_t s_cubeIndices[36] =
 {
 	 0,  1,  2, // 0
 	 1,  3,  2,
@@ -84,9 +84,6 @@ static const uint16_t s_cubeIndices[42] =
 
 	20, 22, 21, // 10
 	21, 22, 23,
-
-	24, 25, 26, // 
-	25, 27, 26,
 };
 
 static const char* s_shaderPath = NULL;
@@ -478,8 +475,8 @@ int _main_(int /*_argc*/, char** /*_argv*/)
 			bgfx::setProgram(programCmp);
 
 			// Set vertex and index buffer.
-			bgfx::setVertexBuffer(vbh);
-			bgfx::setIndexBuffer(ibh, 36, 6);
+			bgfx::setVertexBuffer(vbh, 24, 4);
+			bgfx::setIndexBuffer(ibh, 0, 6);
 
 			// Bind texture.
 			bgfx::setTexture(0, u_texColor, textures[ii]);

include/bgfx.h

@@ -1245,7 +1245,7 @@ namespace bgfx
 	void setIndexBuffer(const TransientIndexBuffer* _tib, uint32_t _numIndices = UINT32_MAX);
 
 	/// Set vertex buffer for draw primitive.
-	void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices = UINT32_MAX);
+	void setVertexBuffer(VertexBufferHandle _handle, uint32_t _startVertex = 0, uint32_t _numVertices = UINT32_MAX);
 
 	/// Set vertex buffer for draw primitive.
 	void setVertexBuffer(DynamicVertexBufferHandle _handle, uint32_t _numVertices = UINT32_MAX);

src/bgfx.cpp

@@ -2275,10 +2275,10 @@ namespace bgfx
 		s_ctx->setIndexBuffer(_tib, numIndices);
 	}
 
-	void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices)
+	void setVertexBuffer(VertexBufferHandle _handle, uint32_t _startVertex, uint32_t _numVertices)
 	{
 		BGFX_CHECK_MAIN_THREAD();
-		s_ctx->setVertexBuffer(_handle, _numVertices);
+		s_ctx->setVertexBuffer(_handle, _startVertex, _numVertices);
 	}
 
 	void setVertexBuffer(DynamicVertexBufferHandle _handle, uint32_t _numVertices)

src/bgfx_p.h

@@ -1137,10 +1137,10 @@ namespace bgfx
 			m_discard = 0 == _numIndices;
 		}
 
-		void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices)
+		void setVertexBuffer(VertexBufferHandle _handle, uint32_t _startVertex, uint32_t _numVertices)
 		{
 			BX_CHECK(_handle.idx < BGFX_CONFIG_MAX_VERTEX_BUFFERS, "Invalid vertex buffer handle. %d (< %d)", _handle.idx, BGFX_CONFIG_MAX_VERTEX_BUFFERS);
-			m_state.m_startVertex = 0;
+			m_state.m_startVertex = _startVertex;
 			m_state.m_numVertices = _numVertices;
 			m_state.m_vertexBuffer = _handle;
 		}
@@ -2481,9 +2481,9 @@ namespace bgfx
 			m_submit->setIndexBuffer(_tib, _numIndices);
 		}
 
-		BGFX_API_FUNC(void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices) )
+		BGFX_API_FUNC(void setVertexBuffer(VertexBufferHandle _handle, uint32_t _numVertices, uint32_t _startVertex) )
 		{
-			m_submit->setVertexBuffer(_handle, _numVertices);
+			m_submit->setVertexBuffer(_handle, _numVertices, _startVertex);
 		}
 
 		BGFX_API_FUNC(void setVertexBuffer(DynamicVertexBufferHandle _handle, uint32_t _numVertices) )