Game Skyrim Forum

I love what this shader does in the night/evening/rain but when it gets clear and sunny everything is blinding bright. For example:

http://yfrog.com/htmgescreenshot27p

Are there any good alternatives or some way to control the brightness?

I'm not sure if that shader is included in MGE, but I'll check.

What you'll want to do is either decrease the bloom multiplier (less blurry brightness) or clamp the HDR (keep it within a "good" range). How you'd do either depends on the code.
If you know HLSL/ASM, then it shouldn't be an issue. Otherwise, I'll check my copy for that shader and see if I can figure out a good way.

I'm not sure if this is exactly what you are looking for since I haven't used the above shader but you should check out http://www.gamesas.com/bgsforums/index.php?showtopic=1048188 for a great MGE setup.

I don't think that shader is default either. I have the code. I don't actually need to use this shader, just something that accomplishes similer, it just seems to me that every bloom/HDR shader I have tried washes things out WAY to much at times.

EDIT: Maybey tweak:
const static float scale = 4.5f;
//spread of bloom

const static float BloomBoost = 1.50f;
//brightness of bloom

That seems to be the area I want to mess about with. I will tinker around with it in the mean time, but if anyone has any good recommendations that would be awesome as well.

//Polik GroNak Blurry HDR Bloomtexture lastpass;texture lastshader;texture lastframe;sampler s0 = sampler_state { magfilter=linear; AddressU=Clamp; AddressV=Clamp;};sampler s1 = sampler_state { texture = <lastpass>; magfilter=linear; AddressU=Clamp; AddressV=Clamp; };sampler s2 = sampler_state { texture=<lastshader>; magfilter=linear; AddressU=Clamp; AddressV=Clamp;};const static float scale = 4.5f;//spread of bloomconst static float BloomBoost = 1.50f;//brightness of bloomfloat4 HDR = 0;//float4(0.5,0.5,0.5,0.1);const static int kernelsize = 9;const float1 blurPixs[kernelsize] = {	{-4.00},	{-3.00},	{-2.00},	{-1.00},	{0.0},	{1.000},	{2.00},	{3.00},	{4.00}};const float1 blurMags[kernelsize] = {	{0.55},	{0.70},	{0.85},	{0.95},	{1.00},	{0.95},	{0.85},	{0.70},	{0.55}};float2 rcpres;//31float4 DownScaleBloomV( float2 Tex : TEXCOORD0 ) : COLOR0{	float3 color = 0;	float3 color2 = 0;	if (Tex.x < 1.02/scale && Tex.y < 1.02/scale){	for (int i=0; i<kernelsize; i++){		color2 = tex2D( s0, (Tex + float2(0,blurPixs[i])*rcpres)*scale );		color += color2*float3(blurMags[i],blurMags[i],blurMags[i]);	}	color = pow(color, HDR.r*2+1)/(HDR.r*7+1);	}	return float4(BloomBoost*color/kernelsize, 1);}float4 DownScaleBloomH( float2 Tex : TEXCOORD0 ) : COLOR0{	float3 color = 0;	float3 color2 = 0;	if (Tex.x < 1.02/scale && Tex.y < 1.02/scale){	for (int i=0; i<kernelsize; i++){		color2 = tex2D( s1, Tex + float2(blurPixs[i],0)*rcpres );		color += color2*float3(blurMags[i],blurMags[i],blurMags[i]);	}	color = pow(color, HDR.r*2+1)/(HDR.r*7+1);	}	return float4(BloomBoost*color/kernelsize, 1);}float4 UpScaleCombine( float2 Tex : TEXCOORD0 ) : COLOR0{	float3 color = tex2D( s1, Tex/scale );	float3 color2 = tex2D( s2, Tex );	return float4(color*1*clamp((1.5-HDR.r*2)+abs(HDR.a-HDR.r),0,2)+pow(color2*1, 3-clamp((2.4-HDR.r*1.4)-abs(HDR.a-HDR.r),0,2.4)) , 1);}technique T0{	pass p1{PixelShader = compile ps_2_0 DownScaleBloomV();}	pass p1{PixelShader = compile ps_2_0 DownScaleBloomH();}	pass p1{PixelShader = compile ps_2_0 UpScaleCombine();}}

That thread seems awesome, I will dig around with it as well. Thanks!

I think that may be the first time I've actually seen the code for one of Polik GroNak's bloom shaders. It's... interesting. Questionably implemented. I can understand why it's washing everything out so much, it doesn't even have a proper brightpass.

The code you'll need to change to do a simple fix:

float4 UpScaleCombine( float2 Tex : TEXCOORD0 ) : COLOR0{	float3 color = tex2D( s1, Tex/scale );	float3 color2 = tex2D( s2, Tex );	return float4(color*1*clamp((1.5-HDR.r*2)+abs(HDR.a-HDR.r),0,2)+pow(color2*1, 3-clamp((2.4-HDR.r*1.4)-abs(HDR.a-HDR.r),0,2.4)) , 1);}

to:

float4 UpScaleCombine( float2 Tex : TEXCOORD0 ) : COLOR0{	float3 color = tex2D( s1, Tex/scale ) * 0.25; // THIS IS THE LINE THAT WILL DECREASE THE BLOOM	float3 color2 = tex2D( s2, Tex );	return float4(color*1*clamp((1.5-HDR.r*2)+abs(HDR.a-HDR.r),0,2)+pow(color2*1, 3-clamp((2.4-HDR.r*1.4)-abs(HDR.a-HDR.r),0,2.4)) , 1);}

There's quite a few actual problems/bugs in that code, though. The last line completely misinterprets how HDR functions in MGE and will cause the screen to flicker quite often. The downscale passes will provide a decent radius, but may lead to floating pixels and a few other bugs, and don't implement a bright pass properly, which will cause rampant over-blooming.

Yikes.... I may need to just use an alternative. =) Thanks for the help! I will try the code change and see how that works.