71 lines
1.6 KiB
Plaintext
71 lines
1.6 KiB
Plaintext
#include "shared.effect"
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uniform texture2d InputA<
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bool automatic = true;
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>;
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uniform texture2d InputB<
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bool automatic = true;
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>;
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uniform float Threshold<
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string name = "Threshold";
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string suffix = " %";
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float minimum = 0.;
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float maximum = 100.;
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float step = .01;
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float scale = .01;
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> = 10.;
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uniform float ThresholdRange<
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string name = "Threshold Range";
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string suffix = " %";
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float minimum = 0.;
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float maximum = 100.;
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float step = .01;
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float scale = .01;
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> = 10.;
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//------------------------------------------------------------------------------
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// Technique: Draw
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//------------------------------------------------------------------------------
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// Parameters:
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// - InputA: RGBA Texture
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// - InputB: XXXA Texture
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float4 PSDrawAlpha(VertexData vtx) : TARGET {
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return InputA.Sample(BlankSampler, vtx.uv);
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};
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technique DrawAlpha
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{
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pass
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{
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vertex_shader = DefaultVertexShader(vtx);
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pixel_shader = PSDrawAlpha(vtx);
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};
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};
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//------------------------------------------------------------------------------
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// Technique: Draw
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//------------------------------------------------------------------------------
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// Parameters:
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// - InputA: RGBX Texture
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// - InputB: XXXA Texture
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// - Threshold: Alha threshold to be "visible".
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float4 PSDrawAlphaThreshold(VertexData vtx) : TARGET {
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float4 rgba = InputA.Sample(BlankSampler, vtx.uv);
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float4 xxxa = InputB.Sample(BlankSampler, vtx.uv);
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rgba.a = smoothstep(Threshold - ThresholdRange * .5, Threshold + ThresholdRange * .5, xxxa.a);
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return rgba;
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};
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technique DrawAlphaThreshold
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{
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pass
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{
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vertex_shader = DefaultVertexShader(vtx);
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pixel_shader = PSDrawAlphaThreshold(vtx);
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};
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};
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