func (m *mainLoop) checkSize() {
var w, h int32
egl.QuerySurface(m.renderState.disp, m.renderState.surf, egl.WIDTH, &w)
egl.QuerySurface(m.renderState.disp, m.renderState.surf, egl.HEIGHT, &h)
width, height := int(w), int(h)
if width != m.width || height != m.height {
m.width = width
m.height = height
m.game.resize(m.width, m.height)
}
}
func Initialize(window egl.NativeWindowType, configAttr, contextAttr []int32) *platform.EGLState {
var (
config egl.Config
numConfig int32
visualId int32
width, height int32
)
display := egl.GetDisplay(egl.DEFAULT_DISPLAY)
if ok := egl.Initialize(display, nil, nil); !ok {
egl.LogError(egl.GetError())
}
if ok := egl.ChooseConfig(display, configAttr, &config, 1, &numConfig); !ok {
egl.LogError(egl.GetError())
}
if ok := egl.GetConfigAttrib(display, config, egl.NATIVE_VISUAL_ID, &visualId); !ok {
egl.LogError(egl.GetError())
}
egl.BindAPI(egl.OPENGL_ES_API)
context := egl.CreateContext(display, config, egl.NO_CONTEXT, &contextAttr[0])
surface := egl.CreateWindowSurface(display, config, window, nil)
var val int32
if ok := egl.QuerySurface(display, surface, egl.WIDTH, &width); !ok {
egl.LogError(egl.GetError())
}
if ok := egl.QuerySurface(display, surface, egl.HEIGHT, &height); !ok {
egl.LogError(egl.GetError())
}
if ok := egl.GetConfigAttrib(display, config, egl.SURFACE_TYPE, &val); !ok {
egl.LogError(egl.GetError())
}
if ok := egl.GetConfigAttrib(display, config, egl.SURFACE_TYPE, &val); !ok {
egl.LogError(egl.GetError())
}
if (val & egl.WINDOW_BIT) == 0 {
panic("No WINDOW_BIT")
}
return &platform.EGLState{
Display: display,
Config: config,
Context: context,
Surface: surface,
NumConfig: numConfig,
VisualId: visualId,
ContextAttributes: contextAttr,
ConfigAttributes: configAttr,
SurfaceWidth: int(width),
SurfaceHeight: int(height),
}
}