Re: [pygame] pygame.surfarray.pixels2d does not work with OpenGL?

[Florian Krause <siebenhundertzehn@xxxxxxxxx>]

I am afraid blitting takes as long as tostring(). This is problematic
for decoding and presenting (for example) fullscreen movies in OpenGL.

On 11/3/11, Lenard Lindstrom <len-l@xxxxxxxxx> wrote:
> You could create an empty surface with RGBA order, then blit to it:
>
> image = pygame.image.load(filename)
> surf = pygame.Surface(image.get_size, pygame.SRCALPHA, 32, masks=(0xFF,
> 0xFF00, 0xFF0000, 0xFF000000))
> surf.blit(image, (0,0))
>
> But there is no way to load an external file into a surface with a different
> format. Maybe, if the PNG file had the desired RGBA order to start with...
> (Is that even possible?)
>
>
> Nov 2, 2011 05:28:17 AM, pygame-users@xxxxxxxx wrote:
>>
>> Mmh, I see. Is there any way to have a 32 bit source alpha surface
>> have pixels in that order? Or is there any other way how to speed up
>> my code by replacing tostring?
>>
>> On Tue, Nov 1, 2011 at 10:14 PM, Lenard Lindstrom wrote:
>> > Hi,
>> >
>> > Function tostring unmaps each pixel into an RGBA sequence, with the R
>> > byte
>> > lowest. Function pixels2d returns a view of the actual surface memory. A
>> > 32
>> > bit source alpha surface need not, and probably does not, have pixels in
>> > an
>> > RGBA order.
>> >
>> > Lenard Lindstrom
>> >
>> > On Oct 31, 2011, Florian Krause wrote:
>> >
>> > Hi everyone,
>> >
>> > can anyone tell me what I am doing wrong here?
>> > Please have a look at the attached example code.
>> >
>> > When using pygame,image.tostring for getting the pixel values to
>> > transform them into a texture, everything works well (see the
>> > outcommented part with WORKS).
>> >
>> > However, when I replace this part with pygame.surfarray.pixels2d, then
>> > the resulting texture seems broken for some reason.
>> >
>> > Does anyone have an idea what is going on here?
>> >
>> > Thanks in advance,
>> > Florian
>> >
>>
>>
>>
>> --
>> www.fladd.de - fladd.de: Homepage of Florian Krause
>> blog.fladd.de - fladd's Blog: Blog of Florian Krause
>> intermezzo.fladd.de - Intermezzo: Music by Florian Krause and Giacomo
>> Novembre
>


-- 
www.fladd.de - fladd.de: Homepage of Florian Krause
blog.fladd.de - fladd's Blog: Blog of Florian Krause
intermezzo.fladd.de - Intermezzo: Music by Florian Krause and Giacomo
Novembre