The TinyGPU v2.0 converts 3D vector graphics into raster images. (Image credit: Pongsagon Vichit/X)
Pongsagon Vichit, an FPGA designer and retro PC fanatic, recently announced TinyGPU v2.0. This GPU works like an independent processor, performing 3D rasterization, transformation, and lighting operations, similar to the GeForce 256 capabilities. Entered into the Tiny Tapeout shuttle, the TinyGPU v2.0 will be fabricated using approximately 200,000 transistors within the maximum allowed 4x4 tile project size. The NVIDIA RTX 5090 features 92.2 billion transistors, delivering greater performance due to the larger transistor count.
Vichit loaded 3D models stored in the flash memory of the TinyGPU v2.0 design, controlling them with a Super Nintendo controller. The gamepad controls model transformations and light source rotation. The TinyGPU v2.0 doesn't boast impressive specs, even if it's still an improved version compared to last year's tiniest GPU.
Vichit's 25 MHz GPU only achieves 7.5 to 15 FPS. It’s mainly used for low-polygon 3D models (render resolutions of 320x240 pixels or lower) and 4-bit color (up to 16 simultaneous colors). While the color depth and resolution aren't anything to write home about, the GPU runs processes. For instance, it converts 3D vector graphics into raster images and utilizes GPU transformation and lightning technology featured on the GeForce 256.
The GPU also has a “4-bit double buffer, 8-bit depth buffer store on QSPI RAM, max 1k triangles, backface culling, 1 dynamic directional light, and flat shading.” Vichit entered the TinyGPU v2.0 into Tiny Tapeout for the next production cycle. He expects to pay approximately $1,500 for this device.
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