atlas

Documentation

Index

• func BeginFrame(graphicsDriver graphicsdriver.Graphics) error
• func DumpImages(graphicsDriver graphicsdriver.Graphics, dir string) error
• func EndFrame(graphicsDriver graphicsdriver.Graphics) 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) error
  • func (i *Image) MarkDisposed()
  • func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte) error
  • func (i *Image) WritePixels(pix []byte, x, y, width, height int)
• type ImageType
• type Shader
  • func NewShader(ir *shaderir.Program) *Shader
  • func (s *Shader) MarkDisposed()

Functions

func BeginFrame

func BeginFrame(graphicsDriver graphicsdriver.Graphics) error

func DumpImages

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

func EndFrame

func EndFrame(graphicsDriver graphicsdriver.Graphics) 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, colorm affine.ColorM, mode graphicsdriver.CompositeMode, filter graphicsdriver.Filter, address graphicsdriver.Address, dstRegion, srcRegion graphicsdriver.Region, subimageOffsets [graphics.ShaderImageCount - 1][2]float32, shader *Shader, uniforms [][]float32, 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) 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) error

func (*Image) WritePixels

func (i *Image) WritePixels(pix []byte, x, y, width, height int)

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)