Example #1
0
	void DrawOutdent(const float size[2], Graphics::RenderState *state)
	{
		PROFILE_SCOPED()

		// locals
		RefCountedPtr<Graphics::VertexBuffer> vb;
		RefCountedPtr<Graphics::IndexBuffer> ib[3];

		// see if we have this size of indent in the cache already
		const vector2f vsize(size[0], size[1]);
		MapOutdentBuffers::iterator bufIt = s_outdentBuffers.find(vsize);
		if (bufIt != s_outdentBuffers.end())
		{
			// found it
			vb = bufIt->second.vb;
			ib[0] = bufIt->second.ib[0];
			ib[1] = bufIt->second.ib[1];
			ib[2] = bufIt->second.ib[2];
		}
		else
		{
			// generate it
			const vector3f vertices[] = {
				/* 0 */	vector3f(0, 0, 0),
				/* 1 */	vector3f(0, size[1], 0),
				/* 2 */	vector3f(size[0], size[1], 0),
				/* 3 */	vector3f(size[0], 0, 0),
				/* 4 */	vector3f(BORDER_WIDTH, BORDER_WIDTH, 0),
				/* 5 */	vector3f(BORDER_WIDTH, size[1] - BORDER_WIDTH, 0),
				/* 6 */	vector3f(size[0] - BORDER_WIDTH, size[1] - BORDER_WIDTH, 0),
				/* 7 */	vector3f(size[0] - BORDER_WIDTH, BORDER_WIDTH, 0)
			};
			const Uint32 indices[] = {
				0, 1, 5, 0, 5, 4, 0, 4, 7, 0, 7, 3,
				3, 7, 6, 3, 6, 2, 1, 2, 6, 1, 6, 5,
				4, 5, 6, 4, 6, 7 };

			// create buffer
			Graphics::VertexBufferDesc vbd;
			vbd.attrib[0].semantic = Graphics::ATTRIB_POSITION;
			vbd.attrib[0].format = Graphics::ATTRIB_FORMAT_FLOAT3;
			vbd.numVertices = 8;
			vbd.usage = Graphics::BUFFER_USAGE_STATIC;

			// Upload data
			vb.Reset(Screen::GetRenderer()->CreateVertexBuffer(vbd));
			TPos* vtxPtr = vb->Map<TPos>(Graphics::BUFFER_MAP_WRITE);
			assert(vb->GetDesc().stride == sizeof(TPos));
			for (Uint32 i = 0; i < 8; i++) {
				vtxPtr[i].pos = vertices[i];
			}
			vb->Unmap();

			// indices
			Uint32 IndexStart = 0;
			Uint32 IndexEnd = 12;
			Uint32 NumIndices = 12;

			ib[0].Reset(CreateIndexBuffer(indices, IndexStart, IndexEnd, NumIndices));

			IndexStart += NumIndices;
			NumIndices = 12;
			IndexEnd += NumIndices;

			ib[1].Reset(CreateIndexBuffer(indices, IndexStart, IndexEnd, NumIndices));

			IndexStart += NumIndices;
			NumIndices = 6;
			IndexEnd += NumIndices;

			ib[2].Reset(CreateIndexBuffer(indices, IndexStart, IndexEnd, NumIndices));

			TOutdentBuffers tib;
			tib.vb = vb;
			tib.ib[0] = ib[0];
			tib.ib[1] = ib[1];
			tib.ib[2] = ib[2];
			s_outdentBuffers[vsize] = tib;
		}

		// Draw it!
		Screen::flatColorMaterial->diffuse = Color(153,153,153,255);
		Screen::GetRenderer()->DrawBufferIndexed(vb.Get(), ib[0].Get(), state, Screen::flatColorMaterial);
		Screen::flatColorMaterial->diffuse = Colors::bgShadow;
		Screen::GetRenderer()->DrawBufferIndexed(vb.Get(), ib[1].Get(), state, Screen::flatColorMaterial);
		Screen::flatColorMaterial->diffuse = Colors::bg;
		Screen::GetRenderer()->DrawBufferIndexed(vb.Get(), ib[2].Get(), state, Screen::flatColorMaterial);
	}