func (f *Font) teardownTextRendering(texture gl.GLuint, initial *sdl.Surface, intermediarya *sdl.Surface, intermediary *sdl.Surface) (endw int, endh int) {
//
gl.Disable(gl.BLEND)
/* Bad things happen if we delete the texture before it finishes */
gl.Finish()
/* return the deltas in the unused w,h part of the rect */
endw = int(initial.W)
endh = int(initial.H)
/* Clean up */
initial.Free()
intermediarya.Free()
intermediary.Free()
gl.DeleteTextures(1, &texture)
//
return
}
func uploadTexture_RGBA32(w, h int, data []byte) gl.GLuint {
var id gl.GLuint
gl.GenTextures(1, &id)
gl.BindTexture(gl.TEXTURE_2D, id)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_R, gl.CLAMP_TO_EDGE)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.GLsizei(w), gl.GLsizei(h), 0, gl.RGBA,
gl.UNSIGNED_BYTE, unsafe.Pointer(&data[0]))
if gl.GetError() != gl.NO_ERROR {
gl.DeleteTextures(1, &id)
panic("Failed to load a texture")
return 0
}
return id
}
func ReuploadTexture(tex *gl.GLuint, w, h int, data []byte) {
if *tex > 0 {
gl.DeleteTextures(1, tex)
}
*tex = uploadTexture_RGBA32(w, h, data)
}