ebiten: github.com/hajimehoshi/ebiten/internal/graphicscommand Index | Files

package graphicscommand

import "github.com/hajimehoshi/ebiten/internal/graphicscommand"

Package graphicscommand represents a low layer for graphics using OpenGL.

Index

Package Files

command.go debug_notebitendebug.go doc.go image.go shader.go

func FlushCommands Uses

❖
func FlushCommands() error

FlushCommands flushes the command queue.

func IsShaderAvailable Uses

❖
func IsShaderAvailable() bool

IsShaderAvailable reports whether shaders are available. This function is only for testing.

func NeedsRestoring Uses

❖
func NeedsRestoring() bool

func ResetGraphicsDriverState Uses

❖
func ResetGraphicsDriverState() error

ResetGraphicsDriverState resets or initializes the current graphics driver state.

func SetGraphicsDriver Uses

❖
func SetGraphicsDriver(driver driver.Graphics)

type Image Uses

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

Image represents an image that is implemented with OpenGL.

func NewImage Uses

❖
func NewImage(width, height int) *Image

NewImage returns a new image.

Note that the image is not initialized yet.

func NewScreenFramebufferImage Uses

❖
func NewScreenFramebufferImage(width, height int) *Image

func (*Image) Dispose Uses

❖
func (i *Image) Dispose()

func (*Image) DrawTriangles Uses

❖
func (i *Image) DrawTriangles(srcs [graphics.ShaderImageNum]*Image, offsets [graphics.ShaderImageNum - 1][2]float32, vertices []float32, indices []uint16, clr *affine.ColorM, mode driver.CompositeMode, filter driver.Filter, address driver.Address, sourceRegion driver.Region, 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 (not texels!)
3: Source Y in pixels
4: Color R [0.0-1.0]
5: Color G
6: Color B
7: Color Y

src and shader are exclusive and only either is non-nil.

The elements that index is in between 2 and 7 are used for the source images. The source image is 1) src argument if non-nil, or 2) an image value in the uniform variables if it exists. If there are multiple images in the uniform variables, the smallest ID's value is adopted.

If the source image is not specified, i.e., src is nil and there is no image in the uniform variables, the elements for the source image are not used.

func (*Image) Dump Uses

❖
func (i *Image) Dump(path string, blackbg bool) error

Dump dumps the image to the specified path. In the path, '*' is replaced with the image's ID.

If blackbg is true, any alpha values in the dumped image will be 255.

This is for testing usage.

func (*Image) InternalSize Uses

❖
func (i *Image) InternalSize() (int, int)

func (*Image) IsInvalidated Uses

❖
func (i *Image) IsInvalidated() bool

func (*Image) Pixels Uses

❖
func (i *Image) Pixels() ([]byte, error)

Pixels returns the image's pixels. Pixels might return nil when OpenGL error happens.

func (*Image) ReplacePixels Uses

❖
func (i *Image) ReplacePixels(pixels []byte, x, y, width, height int)

type Shader Uses

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

func NewShader Uses

❖
func NewShader(ir *shaderir.Program) *Shader

func (*Shader) Dispose Uses

❖
func (s *Shader) Dispose()

Package graphicscommand imports 10 packages (graph) and is imported by 6 packages. Updated 2020-08-05. Refresh now. Tools for package owners.