nargil
06-03-2009 07:55:11
So when i create the scene with the following world file:
I get ~80 FPS
but if I change it (double the min/max W/H) to:
Then there are only ~40 fps.
I'd like to know why. I mean the grass material is the same, and has the same texture resolution, the triangle/batch count remains the same (279315 / 13). Without Aniso Filtering in the gpu driver there is still a 87 to 48 fps drop only due to enlargin the grass quads (actually x-cross quads)
Even doubling the texture size doesn't have such an impact on the performance.
Edit: just turned transparency off. Expected no frame drop, but there still is, a 170 to 150 drop. How to explain that ?
<PgGrassLayers>
<Layer name="Warstwa " material="grass" animation="1" fadeTechnique="2" grassTechnique="1" density="20.000000" maxWidth="1.500000" maxHeight="0.400000" minWidth="1.000000" minHeight="0.200000" swayDistribution="7.000000" swayLenght="0.100000" swaySpeed="0.400000" />
</PgGrassLayers>
[CUT]
<TerrainManager tileSize="1000.000000">
<terrain name="Teren01.mesh 1" coordX="0" coordY="0" coordZ="0" rotation="0" mesh="Teren01.mesh">
<grassLayer name="Warstwa " file="Teren01.mesh 1 Warstwa .png" />
[CUT]
I get ~80 FPS
but if I change it (double the min/max W/H) to:
[code]
<PgGrassLayers>
<Layer name="Warstwa " material="grass" animation="1" fadeTechnique="2" grassTechnique="1" density="20.000000" maxWidth="3.00000" maxHeight="0.800000" minWidth="2.000000" minHeight="0.400000" swayDistribution="7.000000" swayLenght="0.100000" swaySpeed="0.400000" />
</PgGrassLayers>
Then there are only ~40 fps.
I'd like to know why. I mean the grass material is the same, and has the same texture resolution, the triangle/batch count remains the same (279315 / 13). Without Aniso Filtering in the gpu driver there is still a 87 to 48 fps drop only due to enlargin the grass quads (actually x-cross quads)
Even doubling the texture size doesn't have such an impact on the performance.
Edit: just turned transparency off. Expected no frame drop, but there still is, a 170 to 150 drop. How to explain that ?