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Corrects SVideo-as-composite output; the Atari and Vic-20 now both supply svideo.

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Thomas Harte
2018-03-30 13:16:18 -04:00
parent 207d462dbf
commit 163a61dd63
3 changed files with 14 additions and 13 deletions
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Components/6560/6560.hpp
+6 -5
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@@ -54,14 +54,15 @@ template <class T> class MOS6560 {
audio_generator_(audio_queue_),
speaker_(audio_generator_)
{
crt_->set_composite_sampling_function(
"float composite_sample(usampler2D texID, vec2 coordinate, vec2 iCoordinate, float phase, float amplitude)"
crt_->set_svideo_sampling_function(
"vec2 svideo_sample(usampler2D texID, vec2 coordinate, vec2 iCoordinate, float phase)"
"{"
"vec2 yc = texture(texID, coordinate).rg / vec2(255.0);"
"float phaseOffset = 6.283185308 * 2.0 * yc.y;"
"float chroma = cos(phase + phaseOffset);"
"return mix(yc.x, step(yc.y, 0.75) * chroma, amplitude);"
"float phaseOffset = 6.283185308 * 2.0 * yc.y;"
"float chroma = step(yc.y, 0.75) * cos(phase + phaseOffset);"
"return vec2(yc.x, chroma);"
"}");
// default to NTSC