func (_ *GlCache) BindTextureTo(textureUnit, glHandle gl.Uint, glTarget gl.Enum) {
if Cache.bindTexture[textureUnit] != glHandle {
Cache.bindTexture[textureUnit] = glHandle
Cache.ActiveTexture(gl.Enum(gl.TEXTURE0 + textureUnit))
gl.BindTexture(glTarget, glHandle)
}
}
func (me *FxProc) setProcIndex(index int) {
if index != me.procIndex {
me.procIndex = index
me.unifNames = map[[2]string]string{}
if me.IsTex() {
me.Tex.glUnitI = gl.Int(index)
me.Tex.glUnitU = gl.Uint(index)
me.Tex.glUnitE = gl.Enum(gl.TEXTURE0 + index)
}
}
}
func (me *TextureBase) recreate(numTargets int, initialTarget gl.Enum, maxNumMipLevels, width, height gl.Sizei) (err error) {
err = me.onBeforeRecreate()
defer me.onAfterRecreate()
if err == nil {
var (
glTargets []gl.Enum
hasPixData, hasAllFaces bool
i int
)
min, numLevels := int(initialTarget), me.MipMap.NumLevels
glTargets = make([]gl.Enum, numTargets)
for i = 0; i < numTargets; i++ {
glTargets[i] = gl.Enum(min + i)
}
if numLevels < 1 {
numLevels = maxNumMipLevels
}
if me.immutable() {
err = Try.TexStorage2D(me.GlTarget, numLevels, me.SizedInternalFormat, width, height)
}
if hasAllFaces = true; err == nil {
for i = 0; i < numTargets; i++ {
if hasPixData = me.PixelData.Ptrs[i] != PtrNil; !hasPixData {
hasAllFaces = false
}
if me.immutable() {
err = me.subImage(glTargets[i], 0, 0, width, height, me.PixelData.Ptrs[i])
} else {
err = me.texImage(glTargets[i], width, height, me.PixelData.Ptrs[i])
}
}
}
if (err == nil) && hasAllFaces && me.MipMap.AutoGen {
err = Try.GenerateMipmap(me.GlTarget)
}
}
return
}