mirror of
https://github.com/taigrr/gopher-os
synced 2025-01-18 04:43:13 -08:00
Extend vesa driver support to 15 and 16bpp framebuffers
This commit is contained in:
Achilleas Anagnostopoulos
parent
f02c767257
commit
f4f3745073
@ -123,6 +123,8 @@ func (cons *VesaFbConsole) Fill(x, y, width, height uint32, _, bg uint8) {
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switch cons.bpp {
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case 8:
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cons.fill8(pX, pY, pW, pH, bg)
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case 15, 16:
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cons.fill16(pX, pY, pW, pH, bg)
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case 24, 32:
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cons.fill24(pX, pY, pW, pH, bg)
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}
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@ -138,6 +140,18 @@ func (cons *VesaFbConsole) fill8(pX, pY, pW, pH uint32, bg uint8) {
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}
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}
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// fill16 implements a fill operation using a 15/16bpp framebuffer.
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func (cons *VesaFbConsole) fill16(pX, pY, pW, pH uint32, bg uint8) {
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comp := cons.packColor16(bg)
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fbRowOffset := cons.fbOffset(pX, pY)
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for ; pH > 0; pH, fbRowOffset = pH-1, fbRowOffset+cons.pitch {
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for fbOffset := fbRowOffset; fbOffset < fbRowOffset+pW*cons.bytesPerPixel; fbOffset += cons.bytesPerPixel {
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cons.fb[fbOffset] = comp[0]
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cons.fb[fbOffset+1] = comp[1]
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}
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}
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}
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// fill24 implements a fill operation using a 24/32bpp framebuffer.
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func (cons *VesaFbConsole) fill24(pX, pY, pW, pH uint32, bg uint8) {
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comp := cons.packColor24(bg)
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@ -190,6 +204,8 @@ func (cons *VesaFbConsole) Write(ch byte, fg, bg uint8, x, y uint32) {
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switch cons.bpp {
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case 8:
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cons.write8(ch, fg, bg, pX, pY)
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case 15, 16:
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cons.write16(ch, fg, bg, pX, pY)
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case 24, 32:
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cons.write24(ch, fg, bg, pX, pY)
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}
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@ -328,6 +344,23 @@ func (cons *VesaFbConsole) packColor24(colorIndex uint8) [3]uint8 {
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}
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}
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// packColor16 encodes a palette color into the pixel format required by a
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// 15/16 bpp framebuffer.
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func (cons *VesaFbConsole) packColor16(colorIndex uint8) [2]uint8 {
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var (
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c = cons.palette[colorIndex].(color.RGBA)
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packed uint16 = 0 |
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(uint16(c.R>>(8-cons.colorInfo.RedMaskSize)) << cons.colorInfo.RedPosition) |
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(uint16(c.G>>(8-cons.colorInfo.GreenMaskSize)) << cons.colorInfo.GreenPosition) |
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(uint16(c.B>>(8-cons.colorInfo.BlueMaskSize)) << cons.colorInfo.BluePosition)
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)
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return [2]uint8{
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uint8(packed),
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uint8(packed >> 8),
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}
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}
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// Palette returns the active color palette for this console.
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func (cons *VesaFbConsole) Palette() color.Palette {
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return cons.palette
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@ -353,6 +386,12 @@ func (cons *VesaFbConsole) SetPaletteColor(index uint8, rgba color.RGBA) {
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portWriteByteFn(0x3c9, rgba.R>>2)
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portWriteByteFn(0x3c9, rgba.G>>2)
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portWriteByteFn(0x3c9, rgba.B>>2)
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case 15, 16:
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if oldColor == nil {
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return
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}
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cons.replace16(oldColor.(color.RGBA), rgba)
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case 24, 32:
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if oldColor == nil {
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return
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@ -362,6 +401,24 @@ func (cons *VesaFbConsole) SetPaletteColor(index uint8, rgba color.RGBA) {
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}
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}
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// replace16 replaces all srcColor values with dstColor using a 15/16bpp
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// framebuffer.
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func (cons *VesaFbConsole) replace16(src, dst color.RGBA) {
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tmp := cons.palette[0]
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cons.palette[0] = src
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srcComp := cons.packColor16(0)
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cons.palette[0] = dst
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dstComp := cons.packColor16(0)
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cons.palette[0] = tmp
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for fbOffset := uint32(0); fbOffset < uint32(len(cons.fb)); fbOffset += cons.bytesPerPixel {
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if cons.fb[fbOffset] == srcComp[0] &&
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cons.fb[fbOffset+1] == srcComp[1] {
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cons.fb[fbOffset] = dstComp[0]
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cons.fb[fbOffset+1] = dstComp[1]
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}
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}
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}
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// replace24 replaces all srcColor values with dstColor using a 24/32bpp
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// framebuffer.
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func (cons *VesaFbConsole) replace24(src, dst color.RGBA) {
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@ -148,6 +148,106 @@ func TestVesaFbWrite8bpp(t *testing.T) {
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}
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}
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func TestVesaFbWrite16bpp(t *testing.T) {
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specs := []struct {
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consW, consH, offsetY uint32
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font *font.Font
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expFb []byte
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}{
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{
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16, 16, 6,
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mockFont8x10,
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[]byte("" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000001400000000" +
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"00000000000000000000141414000000" +
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"00000000000000000014140014140000" +
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"00000000000000001414000000141400" +
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"00000000000000001414000000141400" +
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"00000000000000001414141414141400" +
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"00000000000000001414000000141400" +
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"00000000000000001414000000141400" +
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"00000000000000001414000000141400" +
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"00000000000000001414000000141400",
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),
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},
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{
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20, 20, 3,
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mockFont10x14,
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[]byte("" +
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"0000000000000000000000000000000000000000" +
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"0000000000000000000000000000000000000000" +
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"0000000000000000000000000000000000000000" +
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"0000000000000000000000000000001400000000" +
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"0000000000000000000000000000001400000000" +
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"0000000000000000000000000000141414000000" +
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"0000000000000000000000000000141414000000" +
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"0000000000000000000000000014140014140000" +
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"0000000000000000000000000014140014140000" +
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"0000000000000000000000000014140000141400" +
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"0000000000000000000000001414000000141400" +
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"0000000000000000000000001414141414141400" +
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"0000000000000000000000001414000000141400" +
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"0000000000000000000000141400000000141400" +
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"0000000000000000000000141400000000001414" +
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"0000000000000000000000141400000000001414" +
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"0000000000000000000014141414000000141414" +
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"0000000000000000000000000000000000000000" +
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"0000000000000000000000000000000000000000" +
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"0000000000000000000000000000000000000000",
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),
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},
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}
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var (
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// RGB555
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colorInfo = &multiboot.FramebufferRGBColorInfo{
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RedPosition: 10,
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RedMaskSize: 5,
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GreenPosition: 5,
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GreenMaskSize: 5,
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BluePosition: 0,
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BlueMaskSize: 5,
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}
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fg = uint8(1)
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fgColor = color.RGBA{R: 10, G: 0, B: 12}
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bg = uint8(0)
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)
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for specIndex, spec := range specs {
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fb := make([]uint8, spec.consW*spec.consH*2)
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cons := NewVesaFbConsole(spec.consW, spec.consH, 16, spec.consW*2, colorInfo, 0)
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cons.fb = fb
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cons.offsetY = spec.offsetY
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cons.SetFont(spec.font)
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cons.loadDefaultPalette()
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cons.SetPaletteColor(fg, fgColor)
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// ASCII 0 maps to the a blank character in the mock font
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// ASCII 1 maps to the letter 'A' in the mock font
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cons.Write(0, fg, bg, 0, 0)
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cons.Write(1, fg, bg, 2, 1)
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// Convert expected contents from ASCII to byte
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for i := 0; i < len(spec.expFb); i++ {
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spec.expFb[i] -= '0'
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}
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if !reflect.DeepEqual(spec.expFb, fb) {
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t.Errorf("[spec %d] unexpected frame buffer contents:\n%s",
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specIndex,
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diffFrameBuffer(spec.consW, spec.consH, spec.consW*2, spec.expFb, fb),
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)
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}
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}
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}
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func TestVesaFbWrite24bpp(t *testing.T) {
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specs := []struct {
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consW, consH, offsetY uint32
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@ -664,6 +764,227 @@ func TestVesaFbFill8(t *testing.T) {
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}
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}
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func TestVesaFbFill16(t *testing.T) {
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var (
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consW, consH uint32 = 16, 26
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// RGB555
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colorInfo = &multiboot.FramebufferRGBColorInfo{
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RedPosition: 10,
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RedMaskSize: 5,
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GreenPosition: 5,
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GreenMaskSize: 5,
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BluePosition: 0,
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BlueMaskSize: 5,
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}
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bg uint8 = 1
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bgColor = color.RGBA{R: 10, G: 0, B: 12}
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origFb = []byte("" +
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"66666666666666666666666666666666" + // }
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"77777777777777777777777777777777" + // }- reserved rows
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"88888888888888888888888888888888" + // }
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000",
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)
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)
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specs := []struct {
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// Input rect in characters
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x, y, w, h uint32
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offsetY uint32
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expFb []byte
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}{
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{
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0, 0, 1, 1,
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0,
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[]byte("" +
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"14141414141414146666666666666666" + // }
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"14141414141414147777777777777777" + // }- reserved rows
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"14141414141414148888888888888888" + // }
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"14141414141414140000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000",
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),
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},
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{
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2, 0, 10, 1,
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3,
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[]byte("" +
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"66666666666666666666666666666666" + // }
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"77777777777777777777777777777777" + // }- reserved rows
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"88888888888888888888888888888888" + // }
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000",
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),
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},
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{
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0, 0, 100, 100,
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3,
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[]byte("" +
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"66666666666666666666666666666666" + // }
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"77777777777777777777777777777777" + // }- reserved rows
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"88888888888888888888888888888888" + // }
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"14141414141414141414141414141414" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000",
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),
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},
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{
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100, 100, 1, 1,
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6,
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[]byte("" +
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"66666666666666666666666666666666" + // }
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"77777777777777777777777777777777" + // }- reserved rows
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"88888888888888888888888888888888" + // }
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000000000000000000000" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414" +
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"00000000000000001414141414141414",
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),
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},
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}
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// Convert original fb contents from ASCII to byte
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for i := 0; i < len(origFb); i++ {
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origFb[i] -= '0'
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}
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for specIndex, spec := range specs {
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// Convert expected contents from ASCII to byte
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for i := 0; i < len(spec.expFb); i++ {
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spec.expFb[i] -= '0'
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}
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fb := make([]uint8, consW*consH*2)
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copy(fb, origFb)
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cons := NewVesaFbConsole(consW, consH, 16, consW*2, colorInfo, 0)
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cons.fb = fb
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cons.offsetY = spec.offsetY
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cons.loadDefaultPalette()
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cons.SetPaletteColor(bg, bgColor)
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// Calling fill before selecting a font should be a no-op
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cons.Fill(spec.x, spec.y, spec.w, spec.h, 0, bg)
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if !reflect.DeepEqual(origFb, fb) {
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t.Errorf("[spec %d] unexpected frame buffer contents:\n%s",
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specIndex,
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diffFrameBuffer(consW, consH, consW*3, origFb, fb),
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)
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}
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cons.SetFont(mockFont8x10)
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cons.Fill(spec.x, spec.y, spec.w, spec.h, 0, bg)
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if !reflect.DeepEqual(spec.expFb, fb) {
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t.Errorf("[spec %d] unexpected frame buffer contents:\n%s",
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specIndex,
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diffFrameBuffer(consW, consH, consW*2, spec.expFb, fb),
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)
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}
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}
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}
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func TestVesaFbFill24(t *testing.T) {
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var (
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consW, consH uint32 = 16, 26
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@ -968,6 +1289,69 @@ func TestVesaFbPalette(t *testing.T) {
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}
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}
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func TestVesaFbReplace16(t *testing.T) {
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var (
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consW, consH uint32 = 4, 4
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// BGR
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colorInfo = &multiboot.FramebufferRGBColorInfo{
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RedPosition: 10,
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RedMaskSize: 5,
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GreenPosition: 5,
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GreenMaskSize: 5,
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BluePosition: 0,
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BlueMaskSize: 5,
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}
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)
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specs := []struct {
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bpp uint8
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inpFb []byte
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expFb []byte
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}{
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{
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24,
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[]byte{
|
||||
0x00, 0x00, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x00, 0x00, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x00, 0x00, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x00, 0x00, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
},
|
||||
[]byte{
|
||||
0x34, 0x12, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x34, 0x12, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x34, 0x12, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
0x34, 0x12, 0x12, 0x00, 0x00, 0x34, 0x34, 0x12,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for specIndex, spec := range specs {
|
||||
fb := make([]uint8, consW*consH*2)
|
||||
copy(fb, spec.inpFb)
|
||||
|
||||
cons := NewVesaFbConsole(consW, consH, 16, consW*2, colorInfo, 0)
|
||||
cons.fb = fb
|
||||
cons.palette = make(color.Palette, 1)
|
||||
|
||||
// First color update should not trigger a replace as the color is not used yet
|
||||
cons.SetPaletteColor(0, color.RGBA{})
|
||||
if !reflect.DeepEqual(spec.inpFb, fb) {
|
||||
t.Errorf("[spec %d] unexpected frame buffer contents:\n%s",
|
||||
specIndex,
|
||||
diffFrameBuffer(consW, consH, cons.pitch, spec.expFb, fb),
|
||||
)
|
||||
}
|
||||
|
||||
// Second color update should replace existing pixels with the new RGB value
|
||||
cons.SetPaletteColor(0, color.RGBA{R: 32, G: 136, B: 160})
|
||||
if !reflect.DeepEqual(spec.expFb, fb) {
|
||||
t.Errorf("[spec %d] unexpected frame buffer contents:\n%s",
|
||||
specIndex,
|
||||
diffFrameBuffer(consW, consH, cons.pitch, spec.expFb, fb),
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
func TestVesaFbReplace24(t *testing.T) {
|
||||
var (
|
||||
consW, consH uint32 = 4, 4
|
||||
@ -1112,6 +1496,58 @@ func TestVesaFbProbe(t *testing.T) {
|
||||
}
|
||||
}
|
||||
|
||||
func TestVesaFbPackColor16(t *testing.T) {
|
||||
specs := []struct {
|
||||
colorInfo *multiboot.FramebufferRGBColorInfo
|
||||
input color.RGBA
|
||||
exp uint16
|
||||
}{
|
||||
{
|
||||
// RGB555
|
||||
&multiboot.FramebufferRGBColorInfo{
|
||||
RedPosition: 10,
|
||||
RedMaskSize: 5,
|
||||
GreenPosition: 5,
|
||||
GreenMaskSize: 5,
|
||||
BluePosition: 0,
|
||||
BlueMaskSize: 5,
|
||||
},
|
||||
color.RGBA{R: 32, G: 136, B: 160},
|
||||
0x1234,
|
||||
},
|
||||
{
|
||||
// RGB565
|
||||
&multiboot.FramebufferRGBColorInfo{
|
||||
RedPosition: 11,
|
||||
RedMaskSize: 5,
|
||||
GreenPosition: 5,
|
||||
GreenMaskSize: 6,
|
||||
BluePosition: 0,
|
||||
BlueMaskSize: 5,
|
||||
},
|
||||
color.RGBA{R: 250, G: 200, B: 120},
|
||||
(250>>3)<<11 | (200>>2)<<5 | (120 >> 3),
|
||||
},
|
||||
}
|
||||
|
||||
cons := NewVesaFbConsole(0, 0, 16, 0, nil, 0)
|
||||
cons.palette = make(color.Palette, 256)
|
||||
|
||||
for specIndex, spec := range specs {
|
||||
cons.colorInfo = spec.colorInfo
|
||||
cons.palette[0] = spec.input
|
||||
|
||||
exp := [2]uint8{
|
||||
uint8(spec.exp),
|
||||
uint8(spec.exp >> 8),
|
||||
}
|
||||
|
||||
if got := cons.packColor16(0); got != exp {
|
||||
t.Errorf("[spec %d] expected: %v; got %v", specIndex, exp, got)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestVesaFbPackColor24(t *testing.T) {
|
||||
specs := []struct {
|
||||
colorInfo *multiboot.FramebufferRGBColorInfo
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user