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  1. Texture1D tex : WAVEFORMDATA;
  2.  
  3. SamplerState sTex
  4. {
  5.     Filter = MIN_MAG_MIP_LINEAR;
  6.     AddressU = Clamp;
  7. };
  8.  
  9. struct VS_IN
  10. {
  11. 	float2 pos : POSITION;
  12. 	float2 tc : TEXCOORD0;
  13. };
  14.  
  15. struct PS_IN
  16. {
  17. 	float4 pos : SV_POSITION;
  18. 	float2 tc : TEXCOORD0;
  19. };
  20.  
  21.  
  22. float4 backgroundColor : BACKGROUNDCOLOR;
  23. float4 highlightColor  : HIGHLIGHTCOLOR;
  24. float4 selectionColor  : SELECTIONCOLOR;
  25. float4 textColor       : TEXTCOLOR;
  26. float cursorPos        : CURSORPOSITION;
  27. bool cursorVisible     : CURSORVISIBLE;
  28. float seekPos          : SEEKPOSITION;
  29. bool seeking           : SEEKING;
  30. float4 replayGain      : REPLAYGAIN; // album gain, track gain, album peak, track peak
  31. float2 viewportSize    : VIEWPORTSIZE;
  32. bool horizontal        : ORIENTATION;
  33. bool shade_played      : SHADEPLAYED;
  34.  
  35. PS_IN VS( VS_IN input )
  36. {
  37. 	PS_IN output = (PS_IN)0;
  38.  
  39. 	float2 half_pixel = float2(1,-1) / viewportSize;
  40. 	output.pos = float4(input.pos - half_pixel, 0, 1);
  41. 	if (horizontal)
  42. 		output.tc = float2((input.tc.x + 1.0) / 2.0, input.tc.y);
  43. 	else
  44. 		output.tc = float2((-input.tc.y + 1.0) / 2.0, input.tc.x);
  45.  
  46. 	return output;
  47. }
  48.  
  49. float4 bar( float pos, float2 tc, float4 fg, float4 bg, float width, bool show )
  50. {
  51. 	float dist = abs(pos - tc.x);
  52. 	float4 c = (show && dist < width)
  53. 		? lerp(fg, bg, smoothstep(0, width, dist))
  54. 		: bg;
  55. 	return c;
  56. }
  57.  
  58. float4 evaluate(float4 bg, float4 fg, float factor)
  59. {
  60. 	return saturate(lerp(bg, fg, factor));
  61. }
  62.  
  63. float4 played( float pos, float2 tc, float4 bg, float factor)
  64. {
  65. 	float4 c = bg;
  66. 	if (pos < tc.x)
  67. 	{
  68. 		c = evaluate(backgroundColor, highlightColor, factor);
  69. 	}
  70. 	else
  71. 	{
  72. 		c = evaluate(highlightColor, backgroundColor, factor);
  73. 	}
  74. 	return c;
  75. }
  76.  
  77. float RMSfactor( float2 tc, float border )
  78. {
  79. 	// alpha 1 indicates biased texture
  80. 	float4 minmaxrms = tex.Sample(sTex, tc.x);
  81. 	if (replayGain.g != -1000) {
  82. 		minmaxrms.rgb *= pow(10,(replayGain.g) / 20) * 2; //use track gain
  83. 	} else if (replayGain.r != -1000) {
  84. 		minmaxrms.rgb *= pow(10,(replayGain.r) / 20) * 2; //use album gain
  85. 	}
  86. 	minmaxrms.rgb -= 0.5 * minmaxrms.a;
  87. 	minmaxrms.rgb *= 1.0 + minmaxrms.a;
  88.  
  89. 	float belowWave = tc.y + border - minmaxrms.r;
  90. 	float aboveWave = tc.y - border - minmaxrms.g;
  91. 	float factorWave = min(abs(belowWave), abs(aboveWave));
  92. 	bool insideWave = (belowWave > 0 && aboveWave < 0);
  93.  
  94. 	float factor = insideWave ? (saturate(factorWave / border / 2)) : 0.0;
  95.  
  96. 	return factor;
  97. }
  98.  
  99. float4 PS( PS_IN input ) : SV_Target
  100. {
  101. 	float dx, dy;
  102. 	if (horizontal)
  103. 	{
  104. 		dx = 1/viewportSize.x;
  105. 		dy = 1/viewportSize.y;
  106. 	}
  107. 	else
  108. 	{
  109. 		dx = 1/viewportSize.y;
  110. 		dy = 1/viewportSize.x;
  111. 	}
  112.  
  113. 	float factor = RMSfactor(input.tc, 2.5 * dy);
  114.  
  115. 	float4 c0 = evaluate(backgroundColor, textColor, factor);
  116. 	if (shade_played)
  117. 		c0 = played(cursorPos, input.tc, c0, factor);
  118. 	c0 = bar(cursorPos, input.tc, selectionColor, c0, dx, cursorVisible);
  119. 	c0 = bar(seekPos,   input.tc, selectionColor, c0, dx, seeking      );
  120. 	return c0;
  121. }
  122.  
  123. technique Render9
  124. {
  125. 	pass
  126. 	{
  127. 		VertexShader = compile vs_2_0 VS();
  128. 		PixelShader = compile ps_2_0 PS();
  129. 	}
  130. }
  131.  
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https://ideone.com/ZXZb3
language:
C (gcc 8.3)
created:
12 years ago
visibility:
secret

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