atlas

Documentation

Index

• func BeginFrame() error
• func DumpImages(dir string) error
• func EndFrame() error
• type Image
  • func NewImage(width, height int) *Image
  • func NewScreenFramebufferImage(width, height int) *Image
  • func (i *Image) DrawTriangles(srcs [graphics.ShaderImageNum]*Image, vertices []float32, indices []uint16, ...)
  • func (i *Image) Dump(path string, blackbg bool) error
  • func (i *Image) MarkDisposed()
  • func (img *Image) Pixels(x, y, width, height int) ([]byte, error)
  • func (i *Image) ReplacePixels(pix []byte)
  • func (i *Image) SetVolatile(volatile bool)
• type Shader
  • func NewShader(program *shaderir.Program) *Shader
  • func (s *Shader) MarkDisposed()

Functions

func BeginFrame

func BeginFrame() error

func DumpImages

func DumpImages(dir string) error

func EndFrame

func EndFrame() error

Types

type Image

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

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

func NewImage

func NewImage(width, height int) *Image

func NewScreenFramebufferImage

func NewScreenFramebufferImage(width, height int) *Image

func (*Image) DrawTriangles

func (i *Image) DrawTriangles(srcs [graphics.ShaderImageNum]*Image, vertices []float32, indices []uint16, colorm *affine.ColorM, mode driver.CompositeMode, filter driver.Filter, address driver.Address, dstRegion, srcRegion driver.Region, subimageOffsets [graphics.ShaderImageNum - 1][2]float32, shader *Shader, uniforms []interface{})

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) Dump

func (i *Image) Dump(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) Pixels

func (img *Image) Pixels(x, y, width, height int) ([]byte, error)

func (*Image) ReplacePixels

func (i *Image) ReplacePixels(pix []byte)

func (*Image) SetVolatile

func (i *Image) SetVolatile(volatile bool)

type Shader

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

func NewShader

func NewShader(program *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)