Most of the time, mobile GPU comparisons involve benchmarks such as Antutu, Nenamark 2, etc…, or people may consider which games will be able to run smoothly with a particular device, but we seldom compare image quality, for the simple reason it’s usually more difficult to achieve. YOUi Labs has just done that, however, by running the shader code below on several hardware platforms, mainly Android tablets, with the most common mobile GPUs, and used the results obtained with a Desktop PC GPU, Nvidia Geforce GT 630M, has a reference.
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precision highp float; uniform vec2 resolution; void main( void ) { float x = ( 1.0 – ( gl_FragCoord.x / resolution.x )); float y = ( gl_FragCoord.y / resolution.y ) * 26.0; float yp = pow( 2.0, floor(y) ); float fade = fract( yp + fract(x) ); if(fract(y) < 0.9) gl_FragColor = vec4( vec3( fade ), 1.0 ); else gl_FragColor = vec4( 0.0 ); } |
Here are the results: The worst GPUs are Mali-400 MP4 in Exynos 4412 and Geforce ULP in Tegra 3, which can respectively only show 5 and 8 lines before degradation, and the top two GPUs are Qualcomm Adreno 225 in MSM8660A, and Vivante GC4000 in HiSilicon K3V2 processor. Imagination Technologies SGX544 and ARM Mali-T604 also provide decent results, but […]
