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util.go
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util.go
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package imgui
// #include "util.h"
import "C"
import (
"unsafe"
)
// VertexBufferLayout returns the byte sizes necessary to select fields in a vertex buffer of a DrawList.
func VertexBufferLayout() (entrySize int, posOffset int, uvOffset int, colOffset int) {
var entrySizeArg C.size_t
var posOffsetArg C.size_t
var uvOffsetArg C.size_t
var colOffsetArg C.size_t
C.wrap_GetVertexBufferLayout(&entrySizeArg, &posOffsetArg, &uvOffsetArg, &colOffsetArg)
entrySize = int(entrySizeArg)
posOffset = int(posOffsetArg)
uvOffset = int(uvOffsetArg)
colOffset = int(colOffsetArg)
return
}
// IndexBufferLayout returns the byte size necessary to select fields in an index buffer of DrawList.
func IndexBufferLayout() (entrySize int) {
var entrySizeArg C.size_t
C.wrap_GetIndexBufferLayout(&entrySizeArg)
entrySize = int(entrySizeArg)
return
}
type GlyphRange uintptr
func NewGlyphRange() GlyphRange {
return GlyphRange(unsafe.Pointer(C.wrap_NewGlyphRange()))
}
func (gr GlyphRange) Handle() *C.ImVector_ImWchar {
return (*C.ImVector_ImWchar)(unsafe.Pointer(gr))
}
func (gr GlyphRange) Destroy() {
C.wrap_DestroyGlyphRange(gr.Handle())
}
func (gr GlyphRange) Data() *Wchar {
return (*Wchar)(C.wrap_GlyphRange_GetData(gr.Handle()))
}
func (fa FontAtlas) FontCount() int {
selfArg, selfFin := fa.Handle()
defer selfFin()
return int(C.wrap_ImFontAtlas_GetFontCount(selfArg))
}
func (self FontAtlas) TextureDataAsAlpha8() (pixels unsafe.Pointer, width int32, height int32, outBytesPerPixel int32) {
var p *C.uchar
var w C.int
var h C.int
var bp C.int
selfArg, selfFin := self.Handle()
defer selfFin()
C.ImFontAtlas_GetTexDataAsAlpha8(selfArg, &p, &w, &h, &bp)
pixels = unsafe.Pointer(p)
width = int32(w)
height = int32(h)
outBytesPerPixel = int32(bp)
return
}
func (self FontAtlas) GetTextureDataAsRGBA32() (pixels unsafe.Pointer, width int32, height int32, outBytesPerPixel int32) {
var p *C.uchar
var w C.int
var h C.int
var bp C.int
selfArg, selfFin := self.Handle()
defer selfFin()
C.ImFontAtlas_GetTexDataAsRGBA32(selfArg, &p, &w, &h, &bp)
pixels = unsafe.Pointer(p)
width = int32(w)
height = int32(h)
outBytesPerPixel = int32(bp)
return
}