Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.

It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.

The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.

You can modify or add to the formulas while it's running, look in the subdirectories.

http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)

The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.

Burton Radons wrote:
> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
> 
> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
> 
> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
> 
> You can modify or add to the formulas while it's running, look in the subdirectories.
> 
> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
> 
> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.

Error: New GL version has been discovered.

(Dual core Operton, XT1900XTX)

Kyle Furlong Wrote:

> Burton Radons wrote:
> > Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
> > 
> > It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
> > 
> > The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
> > 
> > You can modify or add to the formulas while it's running, look in the subdirectories.
> > 
> > http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
> > http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
> > 
> > The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.
> 
> Error: New GL version has been discovered.
> 
> (Dual core Operton, XT1900XTX)

Sorry! That was a debug thing I had to gather information. I've updated the archive with a fix.

I also plugged in an ATI X850 and did some modifications to get it to compile the shaders. It doesn't work; it doesn't like breaking from a loop. I'll continue to wiggle it around to see if I can find a control flow it likes.

Burton Radons wrote:
> Kyle Furlong Wrote:
>
>   
>> Burton Radons wrote:
>>     
>>> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
>>>
>>> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
>>>
>>> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
>>>
>>> You can modify or add to the formulas while it's running, look in the subdirectories.
>>>
>>> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
>>> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
>>>
>>> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.
>>>       
>> Error: New GL version has been discovered.
>>
>> (Dual core Operton, XT1900XTX)
>>     
>
> Sorry! That was a debug thing I had to gather information. I've updated the archive with a fix.
>
> I also plugged in an ATI X850 and did some modifications to get it to compile the shaders. It doesn't work; it doesn't like breaking from a loop. I'll continue to wiggle it around to see if I can find a control flow it likes.
>   
Error: Could not successfully compile shader source:
       ERROR: 0:3: '' :  Version number not supported by GL2
       ERROR: 1 compilation errors.  No code generated.

[Core 2 Duo, ATI Mobility X1600]

Burton Radons wrote:
> Kyle Furlong Wrote:
> 
>> Burton Radons wrote:
>>> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
>>>
>>> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
>>>
>>> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
>>>
>>> You can modify or add to the formulas while it's running, look in the subdirectories.
>>>
>>> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
>>> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
>>>
>>> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.
>> Error: New GL version has been discovered.
>>
>> (Dual core Operton, XT1900XTX)
> 
> Sorry! That was a debug thing I had to gather information. I've updated the archive with a fix.
> 
> I also plugged in an ATI X850 and did some modifications to get it to compile the shaders. It doesn't work; it doesn't like breaking from a loop. I'll continue to wiggle it around to see if I can find a control flow it likes.

Error: Could not successfully compile shader source:
        ERROR: 0:3: '' :  Version number not supported by GL2
        ERROR: 1 compilation errors.  No code generated.

I hope this is helping, I'm on XP if it matters.

Burton Radons wrote:
> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
> 
> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
> 
> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
> 
> You can modify or add to the formulas while it's running, look in the subdirectories.
> 
> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
> 
> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.

I wrote a program like this a couple years ago: http://pages.pomona.edu/~nrr02004/opengl.html (written in C++ though, not D).  It uses a multi-pass algorithm to avoid needing shader branches and loops.

Thanks,
Nathan Reed

Burton Radons Wrote:

> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
> 
> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
> 
> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
> 
> You can modify or add to the formulas while it's running, look in the subdirectories.
> 
> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
> 
> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.

Neat! I can't wait to see the sources!

Success with:
- Core 2 Duo
- Radeon X1800??
- Windows Vista Business

Kyle Furlong Wrote:

> Error: Could not successfully compile shader source:
>          ERROR: 0:3: '' :  Version number not supported by GL2
>          ERROR: 1 compilation errors.  No code generated.
> 
> I hope this is helping, I'm on XP if it matters.

Thanks for your help! I've updated the archive again. It now works on an ATI X850 (with some limitations, and no branching!), so it should work even better on more modern ATI cards. I moved the shader template into "shader.h", so you can fool around with that if it otherwise seems to work. Unfortunately I can't find what predefines ATI uses so I have to hard code my own.

I even got it almost working on at ATI 9800 on Windows XP, but it can't handle the loop at all. At least I confirmed that the GUI code should work there.

Oh and if it does work, comment out the "#undef BREAK_SUPPORT" line in "shader.h". I accidentally made the condition too broad, it sounds like it works fine in modern ATI cards.

Burton Radons schrieb:
> Hey guys, I've been fooling around with GLSL recently and realised I could do a Mandelbrot fractal at full frame rate, so I implemented a kind of mini-Ultra Fractal.
>
> It works in single pass, so, uh, save your work before you try it because it just might cause your card to freeze if its GLSL support sucks or it isn't VERY good at branching shaders. If it works on your machine, I'd like to hear of it; if it doesn't, I'd also like to hear of it. For reference, my setup is an NVIDIA 8800 GTX (beta drivers) on Windows Vista with an Intel Dual Core 2.66GHz processor. I can confirm that it doesn't work on an ATI Radeon 9800 on Windows XP.
>
> The interface is exclusively mouse based. Left mouse button to zoom in, right mouse button to zoom out, middle mouse button to scroll. Using the mouse wheel puts you in variable mode. The mouse wheel selects the current variable, dragging the left mouse button changes it (enumerations and floats are changed by dragging to the right or left), clicking the middle mouse button resets to the initial value, and right clicking returns to zoom/scroll mode.
>
> You can modify or add to the formulas while it's running, look in the subdirectories.
>
> http://members.shaw.ca/burton-radons/GPUFractal-1.7z (binary, 204KB)
> http://members.shaw.ca/burton-radons/GPUFractal-1-source.7z (source, 1,360KB)
>
> The source is pretty shit and will require slight modification of the makefile's paths to compile. I use D v1 and bud.
>   

Vendor: 'ATI Technologies Inc.'
Renderer: 'ATI Mobility Radeon X1600 x86/SSE2'
Version: '2.0.5648 WinXP Release'

Error: Could not successfully compile shader source:
       ERROR: 0:41: '*' :  wrong operand types  no operation '*' exists that ta
kes a left-hand operand of type 'const int' and a right operand of type 'float'
(or there is no acceptable conversion)
       ERROR: 0:41: '*' :  wrong operand types  no operation '*' exists that ta
kes a left-hand operand of type 'const int' and a right operand of type 'float'
(or there is no acceptable conversion)
       ERROR: 0:68: 'uniform' :  cannot initialize this type of qualifier
       ERROR: 0:69: 'uniform' :  cannot initialize this type of qualifier
       ERROR: 0:70: 'uniform' :  cannot initialize this type of qualifier
       ERROR: 0:73: 'uniform' :  cannot initialize this type of qualifier
       ERROR: 0:74: 'uniform' :  cannot initialize this type of qualifier
       ERROR: 0:166: '+' :  wrong operand types  no operation '+' exists that t
akes a left-hand operand of type '2-component vector of int' and a right operand
of type '2-component vector of float' (or there is no acceptable conversion)
       ERROR: 0:166: '-' :  wrong operand types  no operation '-' exists that t
akes a left-hand operand of type '2-component vector of int' and a right operand
of type '2-component vector of float' (or there is no acceptable conversion)
       ERROR: 0:166: '*' :  wrong operand types  no operation '*' exists that t
akes a left-hand operand of type 'const float' and a right operand of type 'int'
(or there is no acceptable conversion)
       ERROR: 10 compilation errors.  No code generated.

~Extrawurst