139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
package izapple2
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import (
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"image"
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)
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// SnapshotParts the currently visible screen
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func (a *Apple2) SnapshotParts() *image.RGBA {
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videoMode := getCurrentVideoMode(a)
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isSecondPage := (videoMode & videoSecondPage) != 0
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videoBase := videoMode & videoBaseMask
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mixMode := videoMode & videoMixTextMask
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modifiers := videoMode & videoModifiersMask
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snapScreen := snapshotByMode(a, videoMode)
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snapPage1 := snapshotByMode(a, videoMode&^videoSecondPage)
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snapPage2 := snapshotByMode(a, videoMode|videoSecondPage)
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var snapAux *image.RGBA
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/*
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if videoBase == videoRGBMix {
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_, mask := snapshotDoubleHiResModeMono(a, isSecondPage, true /*isRGBMixMode*/ /*, color.White)
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snapAux = filterMask(mask)
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}*/
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if videoBase == videoText40RGB {
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snapAux = snapshotText40RGBModeColors(a, isSecondPage)
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} else {
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switch mixMode {
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case videoMixText80:
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snapAux = snapshotByMode(a, videoText80|modifiers)
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case videoMixText40RGB:
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snapAux = snapshotByMode(a, videoText40RGB|modifiers)
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default:
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snapAux = snapshotByMode(a, videoText40|modifiers)
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}
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}
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return mixFourSnapshots([]*image.RGBA{snapScreen, snapAux, snapPage1, snapPage2})
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}
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// VideoModeName returns the name of the current video mode
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func (a *Apple2) VideoModeName() string {
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videoMode := getCurrentVideoMode(a)
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videoBase := videoMode & videoBaseMask
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mixMode := videoMode & videoMixTextMask
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var name string
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applyNTSCFilter := a.isColor
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switch videoBase {
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case videoText40:
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name = "TEXT40COL"
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applyNTSCFilter = false
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case videoText80:
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name = "TEXT80COL"
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applyNTSCFilter = false
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case videoText40RGB:
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name = "TEXT40COLRGB"
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applyNTSCFilter = false
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case videoGR:
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name = "GR"
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case videoDGR:
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name = "DGR"
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case videoHGR:
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name = "HGR"
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case videoDHGR:
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name = "DHGR"
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case videoMono560:
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name = "Mono560"
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applyNTSCFilter = false
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case videoRGBMix:
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name = "RGMMIX"
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case videoRGB160:
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name = "RGB160"
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case videoSHR:
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name = "SHR"
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applyNTSCFilter = false
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default:
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name = "Unknown video mode"
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}
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if (videoMode & videoSecondPage) != 0 {
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name += "-PAGE2"
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}
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switch mixMode {
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case videoMixText40:
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name += "-MIX40"
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case videoMixText80:
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name += "-MIX80"
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case videoMixText40RGB:
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name += "-MIX40RGB"
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}
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if applyNTSCFilter {
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name += "-NTSC"
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}
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return name
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}
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func mixFourSnapshots(snaps []*image.RGBA) *image.RGBA {
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width := snaps[0].Rect.Dx()
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height := snaps[0].Rect.Dy()
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size := image.Rect(0, 0, width*2, height*2)
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out := image.NewRGBA(size)
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for i := 1; i < 4; i++ {
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if snaps[i].Bounds().Dx() < width {
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snaps[i] = doubleWidthFilter(snaps[i])
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}
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}
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for y := 0; y < height; y++ {
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for x := 0; x < width; x++ {
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out.Set(x, y, snaps[0].At(x, y))
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out.Set(x+width, y, snaps[1].At(x, y))
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out.Set(x, y+height, snaps[2].At(x, y))
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out.Set(x+width, y+height, snaps[3].At(x, y))
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}
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}
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return out
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}
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func doubleWidthFilter(in *image.RGBA) *image.RGBA {
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b := in.Bounds()
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size := image.Rect(0, 0, 2*b.Dx(), b.Dy())
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out := image.NewRGBA(size)
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for y := b.Min.Y; y < b.Max.Y; y++ {
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for x := b.Min.X; x < b.Max.X; x++ {
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c := in.At(x, y)
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out.Set(2*x, y, c)
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out.Set(2*x+1, y, c)
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}
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}
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return out
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}
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