atlas

Documentation

Index

• Variables
• func BeginFrame(graphicsDriver graphicsdriver.Graphics) error
• func DumpImages(graphicsDriver graphicsdriver.Graphics, dir string) (string, error)
• func EndFrame(graphicsDriver graphicsdriver.Graphics, swapBuffersForGL func()) error
• type Image
  • func NewImage(width, height int, imageType ImageType) *Image
  • func (i *Image) DrawTriangles(srcs [graphics.ShaderImageCount]*Image, vertices []float32, indices []uint16, ...)
  • func (i *Image) DumpScreenshot(graphicsDriver graphicsdriver.Graphics, path string, blackbg bool) (string, error)
  • func (i *Image) MarkDisposed()
  • func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte, region image.Rectangle) error
  • func (i *Image) WritePixels(pix []byte, region image.Rectangle)
• type ImageType
• type Shader
  • func NewShader(ir *shaderir.Program) *Shader
  • func (s *Shader) MarkDisposed()

Variables

var (
	NearestFilterShader = &Shader{shader: restorable.NearestFilterShader}
	LinearFilterShader  = &Shader{shader: restorable.LinearFilterShader}
)

Functions

func BeginFrame

func BeginFrame(graphicsDriver graphicsdriver.Graphics) error

func DumpImages

func DumpImages(graphicsDriver graphicsdriver.Graphics, dir string) (string, error)

func EndFrame

func EndFrame(graphicsDriver graphicsdriver.Graphics, swapBuffersForGL func()) error

Types

type Image

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

Image is a rectangle pixel set that might be on an atlas.

func NewImage

func NewImage(width, height int, imageType ImageType) *Image

func (*Image) DrawTriangles

func (i *Image) DrawTriangles(srcs [graphics.ShaderImageCount]*Image, vertices []float32, indices []uint16, blend graphicsdriver.Blend, dstRegion graphicsdriver.Region, srcRegions [graphics.ShaderImageCount]graphicsdriver.Region, shader *Shader, uniforms []uint32, evenOdd bool)

DrawTriangles draws triangles with the given image.

The vertex floats are:

0: Destination X in pixels
1: Destination Y in pixels
2: Source X in pixels (the upper-left is (0, 0))
3: Source Y in pixels
4: Color R [0.0-1.0]
5: Color G
6: Color B
7: Color Y

func (*Image) DumpScreenshot

func (i *Image) DumpScreenshot(graphicsDriver graphicsdriver.Graphics, path string, blackbg bool) (string, error)

func (*Image) MarkDisposed

func (i *Image) MarkDisposed()

MarkDisposed marks the image as disposed. The actual operation is deferred. MarkDisposed can be called from finalizers.

A function from finalizer must not be blocked, but disposing operation can be blocked. Defer this operation until it becomes safe. (#913)

func (*Image) ReadPixels

func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte, region image.Rectangle) error

func (*Image) WritePixels

func (i *Image) WritePixels(pix []byte, region image.Rectangle)

WritePixels replaces the pixels on the image.

type ImageType

type ImageType int

const (
	ImageTypeRegular ImageType = iota
	ImageTypeScreen
	ImageTypeVolatile
	ImageTypeUnmanaged
)

type Shader

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

func NewShader

func NewShader(ir *shaderir.Program) *Shader

func (*Shader) MarkDisposed

func (s *Shader) MarkDisposed()

MarkDisposed marks the shader as disposed. The actual operation is deferred. MarkDisposed can be called from finalizers.

A function from finalizer must not be blocked, but disposing operation can be blocked. Defer this operation until it becomes safe. (#913)