graphics

Documentation

Index

• func BindContext()
• func Deinit()
• func GetGlFbo() uint32
• func GetGlProcAddress(proc string) unsafe.Pointer
• func Init(cfg Config)
• func PrintDriverInfo()
• func ReadFramebuffer(bytes int, w int, h int) []byte
• func SetPixelFormat(format PixelFormat)
• type Config
• type Context
• type GlConfig
• type PixelFormat

Functions

func BindContext

func BindContext()

BindContext explicitly binds context to current thread.

func Deinit

func Deinit()

Deinit destroys SDL/OpenGL context. Uses main thread lock (see thread/mainthread).

func GetGlFbo

func GetGlFbo() uint32

func GetGlProcAddress

func GetGlProcAddress(proc string) unsafe.Pointer

func Init

func Init(cfg Config)

Init initializes SDL/OpenGL context. Uses main thread lock (see thread/mainthread).

func PrintDriverInfo

func PrintDriverInfo()

PrintDriverInfo prints OpenGL information.

func ReadFramebuffer

func ReadFramebuffer(bytes int, w int, h int) []byte

func SetPixelFormat

func SetPixelFormat(format PixelFormat)

Types

type Config

type Config struct {
	Ctx Context
	W   int
	H   int
	Gl  GlConfig
}

type Context

type Context int

const (
	CtxNone Context = iota
	CtxOpenGl
	CtxOpenGlEs2
	CtxOpenGlCore
	CtxOpenGlEs3
	CtxOpenGlEsVersion
	CtxVulkan

	CtxUnknown = math.MaxInt32 - 1
	CtxDummy   = math.MaxInt32
)

type GlConfig

type GlConfig struct {
	AutoContext  bool
	VersionMajor uint
	VersionMinor uint
	HasDepth     bool
	HasStencil   bool
}

type PixelFormat

type PixelFormat int

OpenGL pixel format

const (
	UnsignedShort5551 PixelFormat = iota
	UnsignedShort565
	UnsignedInt8888Rev
)