ATI Technologies RADEON X1550 SERIES - Manual (Page 10)

2 Radeon® X1550 Series Features
• Loss-less Z-buffer compression
• Z Cache optimized for real-time shadow rendering.
VideoShader™
• Seamlessly integrates pixel shaders with video in real time.
• All format DTV/HDTV decoding.
• Adaptive Per-Pixel- De-interlacing and Frame Rate Conversion.
512-bit Ring Bus Memory Controller
• Programmable intelligent arbitration logic.
• New fully associative texture, color, and Z/stencil cache designs.
• Hierarchal Z-buffer with Early Z test.
• Lossless Z Compression (up to 48.1)
• Fast Z-Buffer Clear.
• Z Cache optimized for real-time shadow rendering.
• Optimized for performance at high display resolutions, including
widescreen HDTV resolutions.
Ultra-Threaded Shader Engine
• Support for Microsoft® DirectX® 9.0 Shader Model 3.0
programmable vertex and pixel shaders in hardware.
• Full speed 128-bit floating point processing.
• Up to 512 simultaneous pixel threads.
• Dedicated branch execution units for high performance dynamic
branching and flow control.
• Dedicated texture address units for improved efficiency.
• High resolution texture support (up to 4k x 4k).
• Up to 1,536 instructions per rendering pass.
• 3Dc+ texture compression
• High quality 4:1 compression for normal maps and luminance
maps.
• Works with any single-channel or two-channel data format.
• Multiple Render Target (MRT) support.
• Render-to-vertex buffer support.
• Complete feature set also supported in OpenGL® 2.0.