texture tex : WAVEFORMDATA;

sampler sTex = sampler_state
{
Texture = (tex);
MipFilter = LINEAR;
MinFilter = LINEAR;
MagFilter = LINEAR;

AddressU = Clamp;
};

struct VS_IN
{
float2 pos : POSITION;
float2 tc : TEXCOORD0;
};

struct PS_IN
{
float4 pos : SV_POSITION;
float2 tc : TEXCOORD0;
};


float4 backgroundColor : BACKGROUNDCOLOR;
float4 highlightColor : HIGHLIGHTCOLOR;
float4 selectionColor : SELECTIONCOLOR;
float4 textColor : TEXTCOLOR;
float cursorPos : CURSORPOSITION;
bool cursorVisible : CURSORVISIBLE;
float seekPos : SEEKPOSITION;
bool seeking : SEEKING;
float4 replayGain : REPLAYGAIN; // album gain, track gain, album peak, track peak
float2 viewportSize : VIEWPORTSIZE;
bool horizontal : ORIENTATION;
bool flipped : FLIPPED;
bool shade_played : SHADEPLAYED;

PS_IN VS( VS_IN input )
{
PS_IN output = (PS_IN)0;

float2 half_pixel = float2(1,-1) / viewportSize;
output.pos = float4(input.pos - half_pixel, 0, 1);

if (horizontal)
{
output.tc = float2((input.tc.x + 1.0) / 2.0, input.tc.y);
}
else
{
output.tc = float2((-input.tc.y + 1.0) / 2.0, input.tc.x);
}

if (flipped)
output.tc.x = 1.0 - output.tc.x;

return output;
}

float4 bar( float pos, float2 tc, float4 fg, float4 bg, float width, bool show )
{
float dist = abs(pos - tc.x);
float4 c = (show && dist < width)
? lerp(fg, bg, smoothstep(0, width, dist))
: bg;
return c;
}


float4 evaluate(float4 bg, float4 fg, float factor)
{
return saturate(lerp(bg, fg, factor));
}

float4 played( float pos, float2 tc, float4 bg, float factor)
{
float4 c = bg;
if (pos > tc.x)
{
c = evaluate(backgroundColor, highlightColor, factor);
}
return c;
}

float RMSfactor( float2 tc, float border )
{

float4 minmaxrms = tex1D(sTex, tc.x);

minmaxrms.rgb -= 0.5 * minmaxrms.a;
minmaxrms.rgb *= 1.0 + minmaxrms.a;

if (replayGain.g != -1000) {
          minmaxrms.rgb *= pow(10,(replayGain.g) / 20) * 2.5; //use track gain
  } else if (replayGain.r != -1000) {
           minmaxrms.rgb *= pow(10,(replayGain.r) / 20) * 2.5; //use album gain
   }

float belowWave = tc.y + border - minmaxrms.r;
float aboveWave = tc.y - border - minmaxrms.g;
float factorWave = min(abs(belowWave), abs(aboveWave));
bool insideWave = (belowWave > 0 && aboveWave < 0);

float diffRms = abs(tc.y) - border - minmaxrms.b;
float factorRms = abs(diffRms);

//- - - - - ENABLE/DISABLE THE INSIDE WAVE - - - - - - - -
// [TO DISABLE: bool insideRms = 0;] [TO ENABLE: bool insideRms = diffRms < 0; <<<<<backup original]
//bool insideRms = diffRms < 0;
//bool insideRms = (belowWave > 0 && aboveWave < 0);
bool insideRms = (diffRms > 0 && diffRms < 0);

//- - - - - CHANGES LOOK OF INSIDE WAVE - - - - - - - -
//float factor = insideRms ? ( 1 + 0.2 * saturate(factorRms / border / 2)): 1.0; <<<<<backup original
float factor = insideRms ? ( 6 * saturate(factorRms / border / 20)): 10.0;

//- - - - - CHANGES LOOK OF OUTSIDE WAVE & PANEL BACKGROUND - - - - - - - -
//factor = insideWave ? (factor * saturate(factorWave / border / 1)) : 0.0; <<<<<backup original
factor = insideWave ? (factorRms * 6.0 + 0.8 * saturate(factorWave / border / 0.5)) : 0.0;

//return factor; <<<<<<backup original
return insideWave - saturate(factorWave);
}

float4 PS( PS_IN input ) : SV_Target
{
float dx, dy;
if (horizontal)
{
dx = 1/viewportSize.x;
dy = 1/viewportSize.y;
}
else
{
dx = 1/viewportSize.y;
dy = 1/viewportSize.x;
}
float seekWidth = 1 * dx;
float positionWidth = 3 * dx;

float factor = RMSfactor(input.tc, 2.5 * dy);

float4 c0 = evaluate(backgroundColor, textColor, factor);
if (shade_played)
c0 = played(cursorPos, input.tc, c0, factor);
c0 = bar(cursorPos, input.tc, selectionColor, c0, positionWidth, cursorVisible);
c0 = bar(seekPos, input.tc, selectionColor, c0, seekWidth, seeking );
return c0;
}

technique10 Render10
{
pass P0
{
SetGeometryShader( 0 );
SetVertexShader( CompileShader( vs_4_0, VS() ) );
SetPixelShader( CompileShader( ps_4_0, PS() ) );
}
}

technique Render9
{
pass
{
VertexShader = compile vs_2_0 VS();
PixelShader = compile ps_2_0 PS();
}
}

The context menu is the one that appears when you right-click, in this case on tracks in your playlist.
If your skin doesn't have context menus anymore, you can bind a key to it under Preferences.
http://imgur.com/kLTN97j

• U goes from 0.0 on the left edge to 1.0 on the right edge. This lets us map the percentage across the window to the corresponding part of the waveform;
• V goes from -1.0 on the lower edge to 1.0 on the upper edge. This is used to figure out how high we are, compared to the value stored in the waveform.

float4 mag : TRACKMAGNITUDE;

If your drivers follow the popular belief that there's two kinds of workload "lightweight 2D" and "3D", you're likely to get clocks corresponding to the latter as my component both increases timer precision and rapidly draws up to a configurable framerate cap. As for Direct2D triggering it, the underlying technology behind the MS curtains is a Direct3D.

I don't know what the detection triggers on.