106
Support / Re: about the strength of specular light
« on: February 14, 2019, 06:40:17 pm »
here is a work in progress model as example of specular light
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107
Support / Re: about the strength of specular light
« on: February 14, 2019, 06:03:01 pm »
about the outcome of this setting, i did some test on powerVR 6250 gpu and could see the difference it makes.
in some cases, the specular looks quite nice. i use 50 setting and metal does look like metal on my simulated aircrafts, especially in moving images.
in some cases, the specular looks quite nice. i use 50 setting and metal does look like metal on my simulated aircrafts, especially in moving images.
108
Support / Re: about the strength of specular light
« on: February 14, 2019, 05:49:58 pm »
i dont think it is very important either.
but, since full support of material is not easy to do, IF changing specPow is much easier, then it can let the users have more options without too much trouble.
changing specpow ( without other elements of material ) still has some use, such as seperating glass (sharper reflection) and plastic.
if a user have one more option, he will think of more ideas.
i agree that a developer should put efforts on essential elements and neglect unimportant elements, though.
but, since full support of material is not easy to do, IF changing specPow is much easier, then it can let the users have more options without too much trouble.
changing specpow ( without other elements of material ) still has some use, such as seperating glass (sharper reflection) and plastic.
if a user have one more option, he will think of more ideas.
i agree that a developer should put efforts on essential elements and neglect unimportant elements, though.
109
Support / Re: about the strength of specular light
« on: February 13, 2019, 06:08:35 pm »
so why not have a Object3D.setSpecPow() method ?
then each object can have different specpow.
then each object can have different specpow.
110
Support / about maxLights in Config
« on: February 13, 2019, 02:28:30 pm »
i wonder , can maxLights be non power of two, like 33 ?
and can maxLights be different for different Worlds ? some Worlds don't need many lights but some other do.
does it affect performance or memory usage much ? if it doesn't affect much , i would just set it to a large number.
and can maxLights be different for different Worlds ? some Worlds don't need many lights but some other do.
does it affect performance or memory usage much ? if it doesn't affect much , i would just set it to a large number.
111
Support / Re: about the strength of specular light
« on: February 13, 2019, 02:21:02 pm »
i think of Config.specPow , can specPow be variable at runtime ?
112
Support / Re: gpu bug ?
« on: January 19, 2019, 05:29:43 pm »
there is no problem on mali gpu , so should be the problem of powervr gpu
113
Support / Re: gpu bug ?
« on: January 19, 2019, 09:51:09 am »
i tried disabling depth write before drawing the shadows(the mesh holding the texture) , the result is better - from most angles they are correct, still from some angles , wrong.
without that fix , from most angles shadows are wrong.
without that fix , from most angles shadows are wrong.
114
Support / Re: gpu bug ?
« on: January 15, 2019, 05:08:09 pm »
i suspect that when a transparent object is rendered, depth buffer writing is enabled with powervr gpu, which shouldn't be done.
115
Support / is there such a thing as single channel texture in vram?
« on: January 12, 2019, 07:57:21 am »
i think all textures have 3 or 4 color channels. but sometimes a texture has no color , only greyscale info is needed.
if the texture in vram is stored as single channel, then it occupies 1/4 of memory. isn't it great?
another question, can RTT texture be ETC compressed in vram?
if the texture in vram is stored as single channel, then it occupies 1/4 of memory. isn't it great?
another question, can RTT texture be ETC compressed in vram?
116
Support / Re: gpu bug ?
« on: January 11, 2019, 01:51:12 pm »
i roughly calculate the size of squares, it is most likely 32.
117
Support / Re: gpu bug ?
« on: January 11, 2019, 01:42:42 pm »
i don't know the size of the flickering squares, but might be 32. the width of screen is 1920. the squares are axis-aligned to screen.
but the patterns of flicker are multiple, sometimes i see narrow bands. pattern changes with camera position and angle, not by time.
i tried setting usePowerVRTweaks to false, and the whole device hanged. i had to turn off power to reset it.
but the patterns of flicker are multiple, sometimes i see narrow bands. pattern changes with camera position and angle, not by time.
i tried setting usePowerVRTweaks to false, and the whole device hanged. i had to turn off power to reset it.
118
Support / Re: gpu bug ?
« on: January 11, 2019, 12:59:43 pm »
i don't have a way to take screenshots on that device yet, so i use real camera to shoot the imgs.
2 shadows are overlapping in these screenshots(the meshes holding the texture is much larger than the dark area of shadow).
shadows are at exact same height.
the shadow closer to camera flickers(always true).
2 shadows are overlapping in these screenshots(the meshes holding the texture is much larger than the dark area of shadow).
shadows are at exact same height.
the shadow closer to camera flickers(always true).
119
my project sometimes has 2 transparent objects(shadows) overlapping but at the same height.
on Powervr 6250 gpu , the objects flicker, like the behavior of Z-fighting. on maliT720, it doesn't happen.
it shouldn't happen because they are transparent, they should co-exist.
what might be the cause of Z-fighting and can it be fixed?
on Powervr 6250 gpu , the objects flicker, like the behavior of Z-fighting. on maliT720, it doesn't happen.
it shouldn't happen because they are transparent, they should co-exist.
what might be the cause of Z-fighting and can it be fixed?
120
Projects / Re: my project - Vehicle Simulation
« on: January 04, 2019, 03:53:54 pm »
at early stage there are only aircrafts, but if i have enough time , it can have other vehicles, mainly wheeled vehicles (cars).
also human(like fps game) , weapons(bullets , missiles) etc.
the focus is on physics simulation.
also human(like fps game) , weapons(bullets , missiles) etc.
the focus is on physics simulation.