HLSL Shader Model 4 Editor

radiancef0rge

So Im looking for a shader editor that supports Shader Model 4 specifically for this command "lt" http://msdn.microsoft.com/en-us/library/windows/desktop/hh447181(v=vs.85).aspx

Unfortunately I dont have access to Visual Studio, and am not keen on using it anyway. The perfect example would be Shazzam - as the shader is a post effect. Any ideas?

Here is the code its from John Hables stuff on photography spec;

float LinearToSrgb(float val)
{
   float ret;
   if (val <= 0.0)
      ret = 0.0f;
   else if (val <= 0.0031308f)
      ret = 12.92f*val;
   else if (val <= 1.0f)
      ret = (pow(val, 0.41666)*1.055f)-0.055f;
   else
      ret = 1.0f;
   return ret;
}
 
float SrgbToLinear(float val)
{
   float ret;
   if (val <= 0.0f)
      ret = 0;
   else if (val <= 0.04045f)
      ret = val / 12.92f;
   else if (val <= 1.0f)
      ret = pow((val + 0.055f)/1.055f,2.4f);
   else
      ret = 1.0f;
   return ret;
}
 
int g_bSpecOrDiff;
 
float4 ps_main( float2 texCoord  : TEXCOORD0 ) : COLOR
{
   float3 srcA = tex2D(Texture0, texCoord ).rgb;
   float3 srcB = tex2D(Texture1, texCoord ).rgb;
   float3 linA = SrgbToLinear(srcA);
   float3 linB = SrgbToLinear(srcB);
   float3 linDiff = linA*2;
   float3 linSpec = linB-linA;
   float3 texDiff = LinearToSrgb(linDiff);
   float3 texSpec = LinearToSrgb(linSpec);
   float3 ret = g_bSpecOrDiff ? texDiff : texSpec;
   return ret;
}

Any ideas? Ive tried ShaderFX, Maya '14 and LT, Shazzam, and some random web based or indie editors

equil

i think you can just replace those "<=" comparisons with "<=". as that documentation page reveals, that's an assembly instruction, and your code isn't assembly so it's sort of useless anyway. what i think has happened is that your code was posted on a website that processes plaintext in a way to make it not interfere with the html. (usually switching <> to the html entities < and >) In some cases the entity still shows up and i guess that's what happened here.

so essentially: if (val <= 0.0) {} should work

radiancef0rge

Sweet thanks man, it worked. I have one issue with a float3 to 4 conversion. Could use some help would be eternally grateful

sampler2D Texture0 : register(s0);
sampler2D Texture1 : register(s1);
float LinearToSrgb(float val)
{
   float ret;
   if (val <= 0.0)
      ret = 0.0f;
   else if (val <= 0.0031308f)
      ret = 12.92f*val;
   else if (val <= 1.0f)
      ret = (pow(val, 0.41666)*1.055f)-0.055f;
   else
      ret = 1.0f;
   return ret;
}
 
float SrgbToLinear(float val)
{
   float ret;
   if (val <= 0.0f)
      ret = 0;
   else if (val <= 0.04045f)
      ret = val / 12.92f;
   else if (val <= 1.0f)
      ret = pow((val + 0.055f)/1.055f,2.4f);
   else
      ret = 1.0f;
   return ret;
}
 
int g_bSpecOrDiff;
 
float4 ps_main( float2 texCoord  : TEXCOORD0 ) : COLOR
{
   float3 srcA = tex2D(Texture0, texCoord ).rgb;
   float3 srcB = tex2D(Texture1, texCoord ).rgb;
   float3 linA = SrgbToLinear(srcA);
   float3 linB = SrgbToLinear(srcB);
   float3 linDiff = linA*2;
   float3 linSpec = linB-linA;
   float3 texDiff = LinearToSrgb(linDiff);
   float3 texSpec = LinearToSrgb(linSpec);
   float3 ret = g_bSpecOrDiff ? texDiff : texSpec;
   return ret;
}

haiddasalami

just have a constant 1.0 for float 4. Not sure on this nomenclature

float3 ret = g_bSpecOrDiff ? texDiff : texSpec;

but you should be able to append a 1.0 for alpha. Something like

return float4(ret.xyz,1.0);