Created on 06.01.2005 - 21:17

Well, it's not really for Pete's OpenGL plugin, but for ATI's smartshader feature.

My first problem is that I don't have an ATI card, so I can't test my affords

My second problem is that I've never done this before. And the only language I coded before was Turbo Pascal.


So I thought: "Why not just take the HDRish file and alter it a bit."


I've already reduced the effects intensity and the gaussian size. But now I want only the brightest parts of the image to recive the bloom effect.

I've not the slightest idea how to realize that.


This is the code so far:

shader samplePixelShader =
"!!ARBfp1.0

TEMP Temp;

TEX result.color, fragment.texcoord[0], texture[0], 2D;

END";

shader gaussianXPixelShader =
"!!ARBfp1.0

PARAM Offset[11]={ program.local[0..10] };

PARAM Weight[2]=
{
{ 0.2056, 0.13455275, 0.05549925, 0.023592 },
{ 0.0339855, 0.022268, 0.009174, 0.0038995 },
{ 0.0056175, 0.0036765, 0.0015165, 0.0006445 }
};

TEMP s0, r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10;

ADD r0, -Offset[10], fragment.texcoord[0];
ADD r1, -Offset[ 9], fragment.texcoord[0];
ADD r2, -Offset[ 8], fragment.texcoord[0];
ADD r3, -Offset[ 7], fragment.texcoord[0];
ADD r4, -Offset[ 6], fragment.texcoord[0];
ADD r5, -Offset[ 5], fragment.texcoord[0];
ADD r6, -Offset[ 4], fragment.texcoord[0];
ADD r7, -Offset[ 3], fragment.texcoord[0];
ADD r8, -Offset[ 2], fragment.texcoord[0];
ADD r9, -Offset[ 1], fragment.texcoord[0];
ADD r10, -Offset[ 0], fragment.texcoord[0];
MOV s0, fragment.texcoord[0];

TEX r0, r0, texture[0], 2D;
TEX r1, r1, texture[0], 2D;
TEX r2, r2, texture[0], 2D;
TEX r3, r3, texture[0], 2D;
TEX r4, r4, texture[0], 2D;
TEX r5, r5, texture[0], 2D;
TEX r6, r6, texture[0], 2D;
TEX r7, r7, texture[0], 2D;
TEX r8, r8, texture[0], 2D;
TEX r9, r9, texture[0], 2D;
TEX r10, r10, texture[0], 2D;

TEX s0, s0, texture[0], 2D;

MUL s0, s0, Weight[0].x;
MAD s0, r0, Weight[2].w, s0;
MAD s0, r1, Weight[2].z, s0;
MAD s0, r2, Weight[2].y, s0;
MAD s0, r3, Weight[2].x, s0;
MAD s0, r4, Weight[1].w, s0;
MAD s0, r5, Weight[1].z, s0;
MAD s0, r6, Weight[1].y, s0;
MAD s0, r7, Weight[1].x, s0;
MAD s0, r8, Weight[0].w, s0;
MAD s0, r9, Weight[0].z, s0;
MAD s0, r10, Weight[0].y, s0;

ADD r0, Offset[ 0], fragment.texcoord[0];
ADD r1, Offset[ 1], fragment.texcoord[0];
ADD r2, Offset[ 2], fragment.texcoord[0];
ADD r3, Offset[ 3], fragment.texcoord[0];
ADD r4, Offset[ 4], fragment.texcoord[0];
ADD r5, Offset[ 5], fragment.texcoord[0];
ADD r6, Offset[ 6], fragment.texcoord[0];
ADD r7, Offset[ 7], fragment.texcoord[0];
ADD r8, Offset[ 8], fragment.texcoord[0];
ADD r9, Offset[ 9], fragment.texcoord[0];
ADD r10, Offset[10], fragment.texcoord[0];

TEX r0, r0, texture[0], 2D;
TEX r1, r1, texture[0], 2D;
TEX r2, r2, texture[0], 2D;
TEX r3, r3, texture[0], 2D;
TEX r4, r4, texture[0], 2D;
TEX r5, r5, texture[0], 2D;
TEX r6, r6, texture[0], 2D;
TEX r7, r7, texture[0], 2D;
TEX r8, r8, texture[0], 2D;
TEX r9, r9, texture[0], 2D;
TEX r10, r10, texture[0], 2D;

MAD s0, r0, Weight[0].y, s0;
MAD s0, r1, Weight[0].z, s0;
MAD s0, r2, Weight[0].w, s0;
MAD s0, r3, Weight[1].x, s0;
MAD s0, r4, Weight[1].y, s0;
MAD s0, r5, Weight[1].z, s0;
MAD s0, r6, Weight[1].w, s0;
MAD s0, r7, Weight[2].x, s0;
MAD s0, r8, Weight[2].y, s0;
MAD s0, r9, Weight[2].z, s0;
MAD s0, r10, Weight[2].w, s0;

MOV result.color, s0;

END";

shader gaussianYPixelShader =
"!!ARBfp1.0

PARAM Offset[11]={ program.local[0..10] };

PARAM Weight[2]=
{
{ 0.2056, 0.13455275, 0.05549925, 0.023592 },
{ 0.0339855, 0.022268, 0.009174, 0.0038995 },
{ 0.0056175, 0.0036765, 0.0015165, 0.0006445 }
};

TEMP s0, r0, r1, r2, r3, r4, r5, r6, r7, r8, r9, r10;

ADD r0, -Offset[10], fragment.texcoord[0];
ADD r1, -Offset[ 9], fragment.texcoord[0];
ADD r2, -Offset[ 8], fragment.texcoord[0];
ADD r3, -Offset[ 7], fragment.texcoord[0];
ADD r4, -Offset[ 6], fragment.texcoord[0];
ADD r5, -Offset[ 5], fragment.texcoord[0];
ADD r6, -Offset[ 4], fragment.texcoord[0];
ADD r7, -Offset[ 3], fragment.texcoord[0];
ADD r8, -Offset[ 2], fragment.texcoord[0];
ADD r9, -Offset[ 1], fragment.texcoord[0];
ADD r10, -Offset[ 0], fragment.texcoord[0];
MOV s0, fragment.texcoord[0];

TEX r0, r0, texture[0], 2D;
TEX r1, r1, texture[0], 2D;
TEX r2, r2, texture[0], 2D;
TEX r3, r3, texture[0], 2D;
TEX r4, r4, texture[0], 2D;
TEX r5, r5, texture[0], 2D;
TEX r6, r6, texture[0], 2D;
TEX r7, r7, texture[0], 2D;
TEX r8, r8, texture[0], 2D;
TEX r9, r9, texture[0], 2D;
TEX r10, r10, texture[0], 2D;

TEX s0, s0, texture[0], 2D;

MUL s0, s0, Weight[0].x;
MAD s0, r0, Weight[2].w, s0;
MAD s0, r1, Weight[2].z, s0;
MAD s0, r2, Weight[2].y, s0;
MAD s0, r3, Weight[2].x, s0;
MAD s0, r4, Weight[1].w, s0;
MAD s0, r5, Weight[1].z, s0;
MAD s0, r6, Weight[1].y, s0;
MAD s0, r7, Weight[1].x, s0;
MAD s0, r8, Weight[0].w, s0;
MAD s0, r9, Weight[0].z, s0;
MAD s0, r10, Weight[0].y, s0;

ADD r0, Offset[ 0], fragment.texcoord[0];
ADD r1, Offset[ 1], fragment.texcoord[0];
ADD r2, Offset[ 2], fragment.texcoord[0];
ADD r3, Offset[ 3], fragment.texcoord[0];
ADD r4, Offset[ 4], fragment.texcoord[0];
ADD r5, Offset[ 5], fragment.texcoord[0];
ADD r6, Offset[ 6], fragment.texcoord[0];
ADD r7, Offset[ 7], fragment.texcoord[0];
ADD r8, Offset[ 8], fragment.texcoord[0];
ADD r9, Offset[ 9], fragment.texcoord[0];
ADD r10, Offset[10], fragment.texcoord[0];

TEX r0, r0, texture[0], 2D;
TEX r1, r1, texture[0], 2D;
TEX r2, r2, texture[0], 2D;
TEX r3, r3, texture[0], 2D;
TEX r4, r4, texture[0], 2D;
TEX r5, r5, texture[0], 2D;
TEX r6, r6, texture[0], 2D;
TEX r7, r7, texture[0], 2D;
TEX r8, r8, texture[0], 2D;
TEX r9, r9, texture[0], 2D;
TEX r10, r10, texture[0], 2D;

MAD s0, r0, Weight[0].y, s0;
MAD s0, r1, Weight[0].z, s0;
MAD s0, r2, Weight[0].w, s0;
MAD s0, r3, Weight[1].x, s0;
MAD s0, r4, Weight[1].y, s0;
MAD s0, r5, Weight[1].z, s0;
MAD s0, r6, Weight[1].w, s0;
MAD s0, r7, Weight[2].x, s0;
MAD s0, r8, Weight[2].y, s0;
MAD s0, r9, Weight[2].z, s0;
MAD s0, r10, Weight[2].w, s0;

MOV result.color, s0;

END";

shader outputPixelShader =
"!!ARBfp1.0

TEMP back, blur;

TEX blur, fragment.texcoord[0], texture[0], 2D;
TEX back, fragment.texcoord[0], texture[1], 2D;

ADD blur, blur, blur;
ADD result.color, back, blur;

END";

surface blur0 = allocsurf(width/4, height/4);
surface blur1 = allocsurf(width/4, height/4);

gaussianXPixelShader.constant[ 0] = { (4.0*ds_dx)* 1.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 1] = { (4.0*ds_dx)* 3.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 2] = { (4.0*ds_dx)* 5.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 3] = { (4.0*ds_dx)* 7.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 4] = { (4.0*ds_dx)* 9.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 5] = { (4.0*ds_dx)*11.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 6] = { (4.0*ds_dx)*13.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 7] = { (4.0*ds_dx)*15.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 8] = { (4.0*ds_dx)*17.45, 0, 0, 0 };
gaussianXPixelShader.constant[ 9] = { (4.0*ds_dx)*19.45, 0, 0, 0 };
gaussianXPixelShader.constant[10] = { (4.0*ds_dx)*21.45, 0, 0, 0 };

gaussianYPixelShader.constant[ 0] = { 0, (4.0*dt_dy)* 1.45, 0, 0 };
gaussianYPixelShader.constant[ 1] = { 0, (4.0*dt_dy)* 3.45, 0, 0 };
gaussianYPixelShader.constant[ 2] = { 0, (4.0*dt_dy)* 5.45, 0, 0 };
gaussianYPixelShader.constant[ 3] = { 0, (4.0*dt_dy)* 7.45, 0, 0 };
gaussianYPixelShader.constant[ 4] = { 0, (4.0*dt_dy)* 9.45, 0, 0 };
gaussianYPixelShader.constant[ 5] = { 0, (4.0*dt_dy)*11.45, 0, 0 };
gaussianYPixelShader.constant[ 6] = { 0, (4.0*dt_dy)*13.45, 0, 0 };
gaussianYPixelShader.constant[ 7] = { 0, (4.0*dt_dy)*15.45, 0, 0 };
gaussianYPixelShader.constant[ 8] = { 0, (4.0*dt_dy)*17.45, 0, 0 };
gaussianYPixelShader.constant[ 9] = { 0, (4.0*dt_dy)*19.45, 0, 0 };
gaussianYPixelShader.constant[10] = { 0, (4.0*dt_dy)*21.45, 0, 0 };

texture[0].magfilter = "linear";

texture[0].source = backbuffer;
destination blur0;
apply samplePixelShader;

texture[0].source = blur0;
destination blur1;
apply gaussianXPixelShader;

texture[0].source = blur1;
destination blur0;
apply gaussianYPixelShader;

texture[0].source = blur0;
texture[1].source = backbuffer;
destination backbuffer;
apply outputPixelShader;

Created on 06.01.2005 - 23:20

Hello!

I couldn't advice you directly, since i wrote only a few glSlang shaders (=different shader language).

I think <luigi> wrote also in ARB and posted some examples in this forum section.

You must somehow adapt this lines in the next files:

- gpuPeteOGL2.fp
- gpuPeteOGL2.vp

and copy them in the "ePSXe/shaders" directory. Then in the OGL2 plugin config window you select 3.option (ARB program) under "Shader effects".

Maybe you know it already, but hey...

I would start with what already works and then try to change something. And watch for possible licence

[Dieser Beitrag wurde am 26.03.2005 - 16:48 von guest aktualisiert]

Created on 07.01.2005 - 01:02

Changing something that's already working is exactly my style of learning new things.


<luigi> made a brightness specific fragment shader?

I'll take a look at that.

Thanks

Created on 07.01.2005 - 11:17

Try this:
shader outputPixelShader =
"!!ARBfp1.0

# threshold for tag shader (try different values)
PARAM thresh = {0.5, 0.5, 0.5, 0.5};

TEMP back, blur, temp;

TEX blur, fragment.texcoord[0], texture[0], 2D;
TEX back, fragment.texcoord[0], texture[1], 2D;

ADD blur, blur, blur;

# subtract threshold value from the 'back' value
SUB temp, back, thresh;

# if temp value is smaller than threshold, kill fragment
KIL blur;

ADD result.color, back, blur;

END";
Ciao

Created on 07.01.2005 - 12:43

Thanks for your help. Now I'll just ask an ATI user to test this.

Until the DX Tweaker (postfilter for Nvidia and ATI cards) is released.

Created on 07.01.2005 - 15:02

Hi guest,
what wants to say "[***censored***]"?
Bye

Created on 07.01.2005 - 15:31

Sorry <guest>, but it doesn't work.
I'm tryng to debag...
Ciao

Created on 07.01.2005 - 18:19

Yeah, looks like it caused some crashes.

But I think I'm slowly getting an understanding of the language.


BTW I think I should register.

Created on 07.01.2005 - 18:35

Let me correct myself.


Looks like it works. (Crashed for one person, but worked for another.)

Man this stuff is so hard to test without an ATI card.

Created on 07.01.2005 - 20:39

Look like I'm unable to achive the effect I want.