add integrated fft textures to default shader

src/platform_glfw/Renderer.cpp

@@ -118,6 +118,7 @@ namespace Renderer
     "\n"
     "uniform sampler1D texFFT; // towards 0.0 is bass / lower freq, towards 1.0 is higher / treble freq\n"
     "uniform sampler1D texFFTSmoothed; // this one has longer falloff and less harsh transients\n"
+    "uniform sampler1D texFFTIntegrated; // this is continually increasing\n"
     "{%textures:begin%}" // leave off \n here
     "uniform sampler2D {%textures:name%};\n"
     "{%textures:end%}" // leave off \n here

src/platform_w32_dx11/Renderer.cpp

@@ -107,6 +107,7 @@ namespace Renderer
     "{%textures:end%}" // leave off \n here
     "Texture1D texFFT; // towards 0.0 is bass / lower freq, towards 1.0 is higher / treble freq\n"
     "Texture1D texFFTSmoothed; // this one has longer falloff and less harsh transients\n"
+    "Texture1D texFFTIntegrated; // this is continually increasing\n"
     "SamplerState smp;\n"
     "\n"
     "cbuffer constants\n"

src/platform_w32_dx9/Renderer.cpp

@@ -105,6 +105,8 @@ namespace Renderer
     "// towards 0.0 is bass / lower freq, towards 1.0 is higher / treble freq\n"
     "texture texFFTSmoothedT; sampler1D texFFTSmoothed = sampler_state { Texture = <texFFTSmoothedT>; }; \n"
     "// this one has longer falloff and less harsh transients\n"
+    "texture texFFTIntegratedT; sampler1D texFFTIntegrated = sampler_state { Texture = <texFFTIntegratedT>; }; \n"
+    "// this is continually increasing\n"
     "\n"
     "{%textures:begin%}" // leave off \n here
     "texture raw{%textures:name%}; sampler2D {%textures:name%} = sampler_state { Texture = <raw{%textures:name%}>; };\n"