The Eurographics hardware workshops have become an established forum for the exchange of information about the latest developments in computer graphics hardware, a field of growing importance. This volume contains papers representing a comprehensive record of the contributions to the fifth workshop at EG '90 in Lausanne. The first part is devoted to rendering machines. The papers in this part address techniques for accelerating the rendering of images and efficient ways of improving their quality. The second part, on ray tracing, describes algorithms and architectures for producing photorealistic images, with emphasis on ways of reducing the time needed for this computationally intensive task. The third part, on visualization systems, covers a number of topics, including voxel-based systems, radiosity, animation and special rendering techniques. The contributions show there is flourishing activity in the development of new algorithmic and architectural ideas and in absorbing the impact of VLSI technology. The increasing diversity of applications encourages new solutions, and graphics hardware has become a research area of high activity and importance.