texture

package

v0.1.2 Latest Latest Go to latest Published: Aug 7, 2025 License: BSD-3-Clause Imports: 8 Imported by: 1

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Repository

github.com/clktmr/n64

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Documentation ¶

Overview ¶

Package texture provides image types used by the rcp, e.g. textures and framebuffers.

Index ¶

Constants
Variables
type ColorPalette
- func CopyColorPalette(src color.Palette) (*ColorPalette, error)
- func NewColorPalette(size int) (*ColorPalette, error)
- func (p *ColorPalette) Convert(c color.Color) color.Color
- func (p *ColorPalette) Index(c color.Color) int
type Components
type Depth
type Format
type Texture

Constants ¶

View Source

const (
	RGBA32 = Format(RGBA) | Format(BPP32)
	RGBA16 = Format(RGBA) | Format(BPP16)
	YUV16  = Format(YUV) | Format(BPP16)
	IA16   = Format(IA) | Format(BPP16)
	IA8    = Format(IA) | Format(BPP8)
	IA4    = Format(IA) | Format(BPP4)
	I8     = Format(I) | Format(BPP8)
	I4     = Format(I) | Format(BPP4)
	CI8    = Format(CI) | Format(BPP8)
	CI4    = Format(CI) | Format(BPP4)
)

Variables ¶

View Source

var I4Model color.Model = color.ModelFunc(i4Model)

View Source

var RGBA16Model color.Model = color.ModelFunc(rgba16Model)

Functions ¶

This section is empty.

Types ¶

type ColorPalette ¶

type ColorPalette = imageRGBA16

ColorPalette is a palette of RGBA16 colors.

func CopyColorPalette ¶

func CopyColorPalette(src color.Palette) (*ColorPalette, error)

func NewColorPalette ¶

func NewColorPalette(size int) (*ColorPalette, error)

func (*ColorPalette) Convert ¶

func (p *ColorPalette) Convert(c color.Color) color.Color

Convert returns the palette color closest to c in Euclidean R,G,B space.

func (*ColorPalette) Index ¶

func (p *ColorPalette) Index(c color.Color) int

Index returns the index of the palette color closest to c in Euclidean R,G,B,A space.

type Components ¶

type Components uint64

const (
	RGBA Components = iota << 53
	YUV
	CI // Color Palette
	IA // Intensity with alpha
	I  // Intensity
)

type Depth ¶

type Depth uint64

const (
	BPP4 Depth = iota << 51
	BPP8
	BPP16
	BPP32
)

type Format ¶

type Format uint64

func (Format) Bits ¶

func (c Format) Bits(pixels int) int

Bits returns the size in bits for a number of pixels.

func (Format) Bytes ¶

func (c Format) Bytes(pixels int) int

Bytes returns the size in bytes for a number of pixels.

func (Format) Components ¶

func (c Format) Components() Components

func (Format) Depth ¶

func (c Format) Depth() Depth

func (Format) SetDepth ¶

func (c Format) SetDepth(bpp Depth) Format

func (Format) TMEMWords ¶

func (c Format) TMEMWords(pixels int) int

TMEMWords returns the size in TMEM words (8 byte) for a number of pixels.

type Texture ¶

type Texture struct {
	draw.Image
	// contains filtered or unexported fields
}

func Load ¶

func Load(r io.Reader) (tex *Texture, err error)

func NewAlpha ¶

func NewAlpha(r image.Rectangle) *Texture

Stores pixels alpha with 8bit

func NewCI8 ¶

func NewCI8(r image.Rectangle, palette *ColorPalette) *Texture

Stores pixels color index in a RGBA16 palette

func NewFramebuffer ¶ added in v0.1.1

func NewFramebuffer(r image.Rectangle) *Texture

Stores pixels alpha-premultiplied in RGBA with 32bit (8:8:8:8)

func NewI4 ¶

func NewI4(r image.Rectangle) *Texture

Stores pixels intensity with 4bit

func NewI8 ¶

func NewI8(r image.Rectangle) *Texture

Stores pixels intensity with 8bit

func NewRGBA16 ¶

func NewRGBA16(r image.Rectangle) *Texture

Stores pixels in RGBA with 16bit (5:5:5:1)

func NewRGBA32 ¶

func NewRGBA32(r image.Rectangle) *Texture

Stores pixels in RGBA with 32bit (8:8:8:8)

func NewTextureFromImage ¶

func NewTextureFromImage(img image.Image) (tex *Texture)

func (*Texture) Addr ¶

func (p *Texture) Addr() cpu.Addr

Addr returns the base address of the images pixel data.

func (*Texture) Format ¶

func (p *Texture) Format() Format

Format returns the pixel's color format.

func (*Texture) HasAlpha ¶ added in v0.1.1

func (p *Texture) HasAlpha() bool

func (*Texture) Invalidate ¶

func (p *Texture) Invalidate()

func (*Texture) Palette ¶

func (p *Texture) Palette() *Texture

Palette returns the color palette texture for formats CI4 and CI8.

func (*Texture) Pix ¶ added in v0.1.1

func (p *Texture) Pix() []byte

Addr returns a pointer to the images pixel data.

func (*Texture) SetOrigin ¶

func (p *Texture) SetOrigin(origin image.Point)

SetOrigin moves the coordinate system of the texture to origin. Useful if subimages are used as viewports and should have their origin in (0, 0).

func (*Texture) Store ¶

func (p *Texture) Store(w io.Writer) error

func (*Texture) Stride ¶

func (p *Texture) Stride() int

Stride returns the stride (in pixels) between vertically adjacent pixels.

func (*Texture) SubImage ¶

func (p *Texture) SubImage(r image.Rectangle) *Texture

func (*Texture) Writeback ¶

func (p *Texture) Writeback()

Source Files ¶

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