[Gambas-user] SDL component documentation

[Fabien Bodard]

2009/12/16 kevinfishburne <kevinfishburne at ...1887...>:
>
>
> Fabien Bodard-4 wrote:
>>
>> gb.sdl is incomplete ... in fact Laurent have begin to redraw all the
>> gb.sdl lib by using OpenGl... but ... still incomplete ... i think the
>> lack of users on this lib mess his enthusiasm
>>
>
> Hi Fabien, I agree with your comments. I'm guessing that GAMBAS 3 is still
> in alpha/beta since I haven't seen any releases on the download page. I am
> looking forward to it and hope it's fairly downward-compatible so GAMBAS 2
> apps will run in it.
>
> That's good to hear that the new SDL component will be rewritten using
> OpenGL. I think the only thing GAMBAS is currently missing is a robust
> high-level 2D and 3D graphics library. While an OpenGL wrapper is cool,
> having to write 10 or more lines of code to create a single polygon probably
> doesn't help most people. I think it's also important to consider that
> GAMBAS need not necessarily implement literal wrappers for SDL or OpenGL,
> but rather its own unique flavor of 2D and 3D routines aimed squarely at
> delivering practical and efficient results.

i think too , so a good look at blitz will be interesring, Blitz 2D, Blitz Max


> The spirit of GAMBAS surely is to write effective apps quickly and with
> respect to modern object-oriented programming conventions, all using a
> language that is easy and familiar to BASIC-loving developers. In that
> spirit a higher-level graphics component fits right in. Here's my two cents
> for what a 2D graphics library might include:
>
> * Graphics Buffers
> ** Allow creation of buffers in video memory (hardware accelerated) to store
> images
> ** Allow multiple buffers with different properties
> *** Define width and height
> *** Define RGB bit-depth (8, 16, 24, 32, etc.)
> *** Define alpha-channel bit-depth (0, 2, 4, 8, etc.)
>
> * Image Loading
> ** Allow loading of different file types into a graphics buffer (PNG, GIF,
> JPG, etc.)
> ** Allow loading file into specific location (x1,y1) of the buffer
>
> * Bit Blitting
> ** Allow copying one region of a graphics buffer (x1,y1,x2,y2) to another
> graphics buffer (x1,y1)
> ** Allow arbitrary rotation when copying a region from one buffer to another
> ** Allow arbitrary scaling when copying a region from one buffer to another
> ** Allow "downsampling" and "upsampling" when copying a region to a buffer
> with a different bit-depth
> ** Allow global alpha modifier multiplied by the existing region's alpha
> channel (will allow a region to be faded in or faded out, preserving its
> existing alpha channel)
>
> * Effects Processing
> ** Allow various effects (brightness, contrast, hue, saturation, gaussian
> blur, etc.)
> ** Allow the results of the effects, when necessary, to extend beyond the
> region in the buffer they were applied to
>
> I think a 2D graphics component is far more useful than a 3D component, as
> it will appeal to a wider developer base. 3D graphics require more work and
> more skill, therefore most programmers would be more adept at 2D graphics
> than 3D. While 3D is important, it should be relegated to being more
> seriously-developed only after a robust 2D library has been implemented.
>
> I wish I could contribute more but will have to settle for posting in the
> forums and developing GAMBAS apps that hopefully people will find useful or
> fun. I'm very good at graphics and documentation, so if anyone has any tasks
> that need to be done that they think I could do (or help me do by acting as
> an intermediary with the source code) please let me know.
>
> -----
> Kevin Fishburne, Eight Virtues
> www:  http://sales.eightvirtues.com http://sales.eightvirtues.com
> e-mail:  mailto:sales at ...1887... sales at ...1887...
> phone: (770) 853-6271
> --
> View this message in context: http://old.nabble.com/SDL-component-documentation-tp26603936p26806675.html
> Sent from the gambas-user mailing list archive at Nabble.com.
>
>
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