render

Documentation

Index

• Constants
• func FrameImage(label string, frameCache *graphics.FrameCache, key graphics.FrameCacheKey, ...)
• func TextureIDForBitmapFrame(key graphics.FrameCacheKey) imgui.TextureID
• func TextureIDForBitmapTexture(key resource.Key) imgui.TextureID
• func TextureImage(label string, cache *graphics.TextureCache, key resource.Key, size imgui.Vec2)
• func TextureSelector(label string, width float32, guiScale float32, count int, selectedIndex int, ...)
• type Context
• type OrientationView
  • func NewOrientationView(context Context, baseOrientation mgl.Mat4, rotation mgl.Vec3) *OrientationView
  • func (view *OrientationView) Dispose()
  • func (view *OrientationView) Render(orientation mgl.Vec3)
• type TextureRenderer
  • func NewTextureRenderer(gl opengl.OpenGL) *TextureRenderer
  • func (renderer *TextureRenderer) Dispose()
  • func (renderer *TextureRenderer) Handle() uint32
  • func (renderer *TextureRenderer) Render(nested func())
  • func (renderer *TextureRenderer) Size() (width, height float32)

Constants

const (
	// BitmapTextureTypeResource specifies a bitmap texture directly from resources.
	BitmapTextureTypeResource = 0x00
	// BitmapTextureTypeFrame specifies a bitmap texture from the frame cache.
	BitmapTextureTypeFrame = 0x01
)

Functions

func FrameImage

func FrameImage(label string, frameCache *graphics.FrameCache, key graphics.FrameCacheKey, size imgui.Vec2)

FrameImage renders an image centered and fitted within the given size.

func TextureIDForBitmapFrame

func TextureIDForBitmapFrame(key graphics.FrameCacheKey) imgui.TextureID

TextureIDForBitmapFrame returns a texture ID that identifies a bitmap texture from frame cache.

func TextureIDForBitmapTexture

func TextureIDForBitmapTexture(key resource.Key) imgui.TextureID

TextureIDForBitmapTexture returns a texture ID that identifies a bitmap texture from resources.

func TextureImage

func TextureImage(label string, cache *graphics.TextureCache, key resource.Key, size imgui.Vec2)

TextureImage renders an image centered and fitted within the given size.

func TextureSelector

func TextureSelector(label string, width float32, guiScale float32,
	count int, selectedIndex int, cache *graphics.TextureCache, keyResolver func(int) resource.Key,
	tooltipText func(int) string,
	changeCallback func(int))

TextureSelector renders a horizontal list of game textures, with selection capability.

Types

type Context

type Context struct {
	OpenGL opengl.OpenGL

	ViewMatrix       *mgl.Mat4
	ProjectionMatrix mgl.Mat4
}

Context provides current render properties.

type OrientationView

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

OrientationView is a control that displays how an object is oriented. This is still not working properly. The orientation arrow is not properly rotated, and I suspect the typical issue of three-angle rotation versus quaternion rotation. Though I doubt the original engine used quaternions, it remains too confusing for me.

func NewOrientationView

func NewOrientationView(context Context, baseOrientation mgl.Mat4, rotation mgl.Vec3) *OrientationView

NewOrientationView returns a new instance.

func (*OrientationView) Dispose

func (view *OrientationView) Dispose()

Dispose cleans up resources of the view.

func (*OrientationView) Render

func (view *OrientationView) Render(orientation mgl.Vec3)

Render renders the orientation view for given orientation.

type TextureRenderer

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

TextureRenderer is a renderer within which something can be rendered onto a texture. This texture can then be used to be displayed.

func NewTextureRenderer

func NewTextureRenderer(gl opengl.OpenGL) *TextureRenderer

NewTextureRenderer returns a new instance.

func (*TextureRenderer) Dispose

func (renderer *TextureRenderer) Dispose()

Dispose cleans up resources.

func (*TextureRenderer) Handle

func (renderer *TextureRenderer) Handle() uint32

Handle returns the texture handle.

func (*TextureRenderer) Render

func (renderer *TextureRenderer) Render(nested func())

Render calls the nested function. All drawing commands within this function will end up in the texture.

func (*TextureRenderer) Size

func (renderer *TextureRenderer) Size() (width, height float32)

Size returns the dimensions of the texture, in pixels.