NVIDIA Quadro DDR

by Gary Jones on January 25, 2000 11:44 AM EST

As one moves from simple flat shading to more complex shading and textures, the performance drops.  A test was performed on the Quadro DDR and the GLoria II (Quadro SDR) with tri-linear textures and one infinite light.  The GLperf script fragment was:

TriangleStripTest {

    (UserString printf("Triangle Strip (%s, 64x64 RGB trilinear modulated texture, smooth, 1 inf light)", ExecuteMode, Size))
    (ExecuteMode Immediate )
    (DepthTest GL_LEQUAL)
    (ObjsPerBeginEnd    4)
    (Size from 1 to 512 step 100%)
    (NormalData PerVertex)
    (TexTarget GL_TEXTURE_2D)
    (TexWidth 64)
    (TexHeight 64)
    (TexComps 3)
    (TexLOD 3)
    (TexMagFilter GL_LINEAR)
    (TexMinFilter GL_LINEAR_MIPMAP_LINEAR)
    (TexFunc GL_MODULATE)
    (NormalData PerVertex)
    (TexData PerVertex)
    (ShadeModel GL_SMOOTH)   
    (InfiniteLights 1)

}

The results are compared to the flat shaded performance in the following chart:

SPEC’s GLperf GLperf - 3
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