gfx

package

v0.0.0-...-df128bb Latest Latest Go to latest Published: Jul 4, 2021 License: MIT Imports: 16 Imported by: 0

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Repository

git.lubar.me/ben/engine

Links

Open Source Insights

Documentation ¶

Rendered for

Index ¶

Variables
func HorizontalFOV(angle f32.Radian) f32.Radian
func Init(ctx gl.Context, nextFrame func()) error
func NextFrame()
func OnSize(e size.Event)
func Raw(f func(GL gl.Context))
func Size() size.Event
type Batch
- func (b *Batch) Append(s *Sprite, x, y, z, sx, sy float32, tint Color)
- func (b *Batch) AppendEx(s *Sprite, x, y, z, sx, sy float32, tint Color, flags RenderFlags, ...)
- func (b *Batch) Release()
- func (b *Batch) Render(cam *Camera)
- func (b *Batch) Reserve(count int)
- func (b *Batch) Reset()
type Camera
- func (c *Camera) Combined() *f32.Mat4
- func (c *Camera) Offset() *f32.Mat4
- func (c *Camera) Position() *f32.Mat4
- func (c *Camera) Rotation() *f32.Mat4
- func (c *Camera) SetDefaults()
type Color
- func BlackAlpha(a uint8) Color
- func WhiteAlpha(a uint8) Color
type ErrShaderLink
- func (err ErrShaderLink) Error() string
type RenderFlags
type Sheet
- func NewEmbeddedSheet(name string, width, height int, unitPerPx float32, data []byte) *Sheet
- func NewSheet(name string, width, height int, unitPerPx float32) *Sheet
- func (s *Sheet) Sprite(x, y, w, h, px, py float32) *Sprite
- func (s *Sheet) StartPreload()
type Sprite
- func (s *Sprite) Crop(left, top, right, bottom float32) *Sprite

Constants ¶

This section is empty.

Variables ¶

View Source

var Blank = &Sprite{
	Named: internal.Name("Blank"),
	Sheet: &Sheet{
		Named:     internal.Name("Blank"),
		Width:     1,
		Height:    1,
		unitPerPx: 1,
		tex:       blankTex,
		state:     stateReady,
	},
	X0: -1,
	X1: 1,
	Y0: -1,
	Y1: 1,
	S0: 0,
	S1: 1,
	T0: 0,
	T1: 1,
}

Functions ¶

func HorizontalFOV ¶

func HorizontalFOV(angle f32.Radian) f32.Radian

func Init ¶

func Init(ctx gl.Context, nextFrame func()) error

func NextFrame ¶

func NextFrame()

func OnSize ¶

func OnSize(e size.Event)

func Raw ¶

func Raw(f func(GL gl.Context))

func Size ¶

func Size() size.Event

Types ¶

type Batch ¶

type Batch struct {
	// contains filtered or unexported fields
}

func (*Batch) Append ¶

func (b *Batch) Append(s *Sprite, x, y, z, sx, sy float32, tint Color)

func (*Batch) AppendEx ¶

func (b *Batch) AppendEx(s *Sprite, x, y, z, sx, sy float32, tint Color, flags RenderFlags, rx, ry, rz float32)

func (*Batch) Release ¶

func (b *Batch) Release()

func (*Batch) Render ¶

func (b *Batch) Render(cam *Camera)

func (*Batch) Reserve ¶

func (b *Batch) Reserve(count int)

func (*Batch) Reset ¶

func (b *Batch) Reset()

type Camera ¶

type Camera struct {
	Perspective f32.Mat4
	// contains filtered or unexported fields
}

func (*Camera) Combined ¶

func (c *Camera) Combined() *f32.Mat4

func (*Camera) Offset ¶

func (c *Camera) Offset() *f32.Mat4

func (*Camera) Position ¶

func (c *Camera) Position() *f32.Mat4

func (*Camera) Rotation ¶

func (c *Camera) Rotation() *f32.Mat4

func (*Camera) SetDefaults ¶

func (c *Camera) SetDefaults()

type Color ¶

type Color struct {
	R, G, B, A uint8
}

var (
	Black Color = BlackAlpha(255)
	White Color = WhiteAlpha(255)
)

func BlackAlpha ¶

func BlackAlpha(a uint8) Color

func WhiteAlpha ¶

func WhiteAlpha(a uint8) Color

type ErrShaderLink ¶

type ErrShaderLink struct {
	Vert string
	Frag string
	Link string

	Extra string
}

func (ErrShaderLink) Error ¶

func (err ErrShaderLink) Error() string

type RenderFlags ¶

type RenderFlags uint16

const (
	// FlagNoDiscard prevents samples with an alpha channel below 50% from
	// being discarded.
	FlagNoDiscard RenderFlags = 1 << 0
	// FlagBillboard makes the sprite orient itself towards the camera.
	FlagBillboard RenderFlags = 1 << 1
	// FlagMTSDF causes the texture to be interpreted as a multi-channel
	// transparent signed distance field.
	FlagMTSDF RenderFlags = 1 << 2
	// FlagType2 uses an alternate rendering path for the sprite. What this
	// actually means depends on other flags. Currently, the following flags
	// have defined alternate rendering paths:
	//
	// MTSDF: use the alpha channel to render a smooth border (as opposed
	// to the sharper main shape rendering)
	FlagType2 RenderFlags = 1 << 3
)

type Sheet ¶

type Sheet struct {
	internal.Named
	Width  int
	Height int
	// contains filtered or unexported fields
}

func NewEmbeddedSheet ¶

func NewEmbeddedSheet(name string, width, height int, unitPerPx float32, data []byte) *Sheet

func NewSheet ¶

func NewSheet(name string, width, height int, unitPerPx float32) *Sheet

func (*Sheet) Sprite ¶

func (s *Sheet) Sprite(x, y, w, h, px, py float32) *Sprite

func (*Sheet) StartPreload ¶

func (s *Sheet) StartPreload()

type Sprite ¶

type Sprite struct {
	internal.Named
	Sheet  *Sheet
	X0, X1 float32
	Y0, Y1 float32
	S0, S1 float32
	T0, T1 float32
	// contains filtered or unexported fields
}

func (*Sprite) Crop ¶

func (s *Sprite) Crop(left, top, right, bottom float32) *Sprite

Source Files ¶

View all Source files

Directories ¶

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