func main() {
initialWidth, initialHeight := 1280, 720
runtime.LockOSThread()
if sdlInit := sdl.Init(sdl.INIT_VIDEO); sdlInit != 0 {
panic("SDL init error")
}
reinitScreen(initialWidth, initialHeight)
defer cleanExit(true, false)
if err := gl.Init(); err != nil {
panic(err)
}
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.DEPTH)
defer cleanExit(false, true)
glSetupShaderProg(&shaderTextureCreator, false)
glSetupShaderProg(&shaderTextureDisplay, true)
glFillBuffer(rttVerts, &rttVertBuf)
glFillBuffer(dispVerts, &dispVertBuf)
gl.GenTextures(1, &rttFrameTex)
gl.BindTexture(gl.TEXTURE_2D, rttFrameTex)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.REPEAT)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.REPEAT)
if doRtt {
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, texSize, texSize, 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
gl.GenFramebuffers(1, &rttFrameBuf)
gl.BindFramebuffer(gl.FRAMEBUFFER, rttFrameBuf)
gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, rttFrameTex, 0)
gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
} else {
glFillTextureFromImageFile("texture.jpg")
}
gl.BindTexture(gl.TEXTURE_2D, 0)
gl.ClearColor(0.3, 0.6, 0.9, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.ActiveTexture(gl.TEXTURE0)
for {
if evt := sdl.PollEvent(); evt != nil {
switch event := evt.(type) {
case *sdl.ResizeEvent:
reinitScreen(int(event.W), int(event.H))
case *sdl.QuitEvent:
return
}
} else {
if doRtt {
renderToTexture()
}
renderToScreen()
sdl.GL_SwapBuffers()
}
}
sdl.Quit()
}
func initScene() {
initProgram()
//gl.Enable(gl.CULL_FACE)
//gl.CullFace(gl.BACK)
gl.FrontFace(gl.CW)
gl.Enable(gl.DEPTH_TEST)
gl.DepthMask(gl.TRUE)
gl.DepthFunc(gl.LEQUAL)
gl.DepthRange(0.0, 1.0)
gl.Enable(gl.DEPTH_CLAMP)
}
func Initialize() {
fmt.Println("INFO: OpenGL Version", gl.GetString(gl.VERSION))
// Render things which are closer on top.
gl.Init()
gl.Enable(gl.DEPTH_TEST)
gl.ClearColor(0.0, 0.0, 0.0, 0.0)
CreateShaders()
CreateVOB()
}
func Loop(onKeyDown, onKeyUp func(*sdl.KeyboardEvent)) {
var nowTime = time.Now()
var lastSecond, lastTime = nowTime, nowTime
var nowNano int64 = 0
var durSec time.Duration
var sdlEvt sdl.Event
var winw, winh int
var retro int = int(Canvas0.RetroFactor)
var canvas0RetroFactor = 1 / Canvas0.RetroFactor
gl.Enable(gl.FRAMEBUFFER_SRGB)
for Looping {
nowTime = time.Now()
pipeline.TimeLast, pipeline.TimeNow = lastTime, nowTime
pipeline.TimeSecsElapsed = nowTime.Sub(lastTime).Seconds()
lastTime = nowTime
nowNano = nowTime.UnixNano()
Canvas0.TimeElapsed = nowNano - StartTime
durSec = nowTime.Sub(lastSecond)
if sdlEvt = sdl.PollEvent(); sdlEvt != nil {
switch event := sdlEvt.(type) {
case *sdl.ResizeEvent:
winw, winh = int(event.W), int(event.H)
if retro > 0 {
for (winw % retro) != 0 {
winw--
}
for (winh % retro) != 0 {
winh--
}
if (winw / retro) < 32 {
winw = 32 * retro
}
if (winh / retro) < 32 {
winh = 32 * retro
}
}
ReinitVideo(winw, winh, true, true)
RefreshWindowCaption()
case *sdl.QuitEvent:
Looping = false
return
case *sdl.KeyboardEvent:
if event.Type == sdl.KEYUP {
KeysPressed[event.Keysym.Sym] = false
if event.Keysym.Sym == KeySymTmpTexUp {
LoadTmpTex(TmpTexIndex + 1)
}
if event.Keysym.Sym == KeySymTmpTexDn {
LoadTmpTex(TmpTexIndex - 1)
}
// if event.Keysym.Sym == KeySymOctreeLevelUp { softpipeline.OctreeMaxLevel++ }
// if event.Keysym.Sym == KeySymOctreeLevelDown { softpipeline.OctreeMaxLevel-- }
onKeyUp(event)
} else if event.Type == sdl.KEYDOWN {
KeysPressed[event.Keysym.Sym] = true
onKeyDown(event)
}
case *sdl.MouseMotionEvent:
MouseX, MouseY = float64(event.X)*canvas0RetroFactor, float64(event.Y)*canvas0RetroFactor
Canvas0.MouseX, Canvas0.MouseY = gl.Float(MouseX*Canvas0.InvWidth), gl.Float(MouseY*Canvas0.InvHeight)
}
}
pipeline.CamMove, pipeline.CamTurn = false, false
if KeysPressed[sdl.K_UP] {
pipeline.CamMove, pipeline.CamMoveFwd = true, 1
} else {
pipeline.CamMoveFwd = 0
}
if KeysPressed[sdl.K_DOWN] {
pipeline.CamMove, pipeline.CamMoveBack = true, 1
} else {
pipeline.CamMoveBack = 0
}
if KeysPressed[sdl.K_LEFT] {
pipeline.CamTurn, pipeline.CamTurnLeft = true, 1
} else {
pipeline.CamTurnLeft = 0
}
if KeysPressed[sdl.K_RIGHT] {
pipeline.CamTurn, pipeline.CamTurnRight = true, 1
} else {
pipeline.CamTurnRight = 0
}
if KeysPressed[sdl.K_PAGEUP] {
pipeline.CamTurn, pipeline.CamTurnUp = true, 1
} else {
pipeline.CamTurnUp = 0
}
if KeysPressed[sdl.K_PAGEDOWN] {
pipeline.CamTurn, pipeline.CamTurnDown = true, 1
} else {
pipeline.CamTurnDown = 0
}
// if KeysPressed[sdl.K_RSHIFT] { pipeline.SpeedUp = 10 } else { pipeline.SpeedUp = 1 }
if KeysPressed[sdl.K_a] {
pipeline.CamMove, pipeline.CamMoveLeft = true, 1
} else {
pipeline.CamMoveLeft = 0
}
if KeysPressed[sdl.K_d] {
pipeline.CamMove, pipeline.CamMoveRight = true, 1
} else {
pipeline.CamMoveRight = 0
}
if KeysPressed[sdl.K_w] {
pipeline.CamMove, pipeline.CamMoveUp = true, 1
} else {
pipeline.CamMoveUp = 0
}
if KeysPressed[sdl.K_s] {
pipeline.CamMove, pipeline.CamMoveDown = true, 1
} else {
pipeline.CamMoveDown = 0
}
if durSec.Seconds() < 1 {
Fps++
} else {
RefreshWindowCaption()
Fps = 0
lastSecond = nowTime
}
pipeline.PreRender()
// gl.Disable(gl.FRAMEBUFFER_SRGB)
Canvas0.RenderContent()
// Canvas0.RenderPostFx()
// gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
// gl.Viewport(0, 0, gl.Sizei(Screen.W), gl.Sizei(Screen.H))
// Canvas0.RenderSelf()
sdl.GL_SwapBuffers()
glutil.PanicIfErrors("Post Render Loop")
}
}
func main() {
var now = time.Now()
initialWidth, initialHeight := 1280, 720
runtime.LockOSThread()
if sdlInit := sdl.Init(sdl.INIT_VIDEO); sdlInit != 0 {
panic("SDL init error")
}
reinitScreen(initialWidth, initialHeight)
defer cleanExit(true, false)
if err := gl.Init(); err != nil {
panic(err)
}
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.DEPTH)
sdl.WM_SetCaption("Loading volume...", "")
loadVolume()
defer cleanExit(false, true)
sdl.WM_SetCaption("Compiling shaders...", "")
glSetupShaderProg(&shaderTextureCreator)
glSetupShaderProg(&shaderTextureDisplay)
glFillBuffer(rttVerts, &rttVertBuf)
glFillBuffer(dispVerts, &dispVertBuf)
gl.GenTextures(1, &rttFrameTex)
gl.BindTexture(gl.TEXTURE_2D, rttFrameTex)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, glTexFilter)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, glTexFilter)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, glTexClamp)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, glTexClamp)
if doRtt && !noRtt {
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, texWidth, texHeight, 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
gl.GenFramebuffers(1, &rttFrameBuf)
gl.BindFramebuffer(gl.FRAMEBUFFER, rttFrameBuf)
gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, rttFrameTex, 0)
gl.BindFramebuffer(gl.FRAMEBUFFER, 0)
} else {
if noRtt {
rttFrameBuf = 0
} else {
glFillTextureFromImageFile("texture.jpg")
}
}
gl.BindTexture(gl.TEXTURE_2D, 0)
gl.ClearColor(0.3, 0.2, 0.1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
var looping = true
var fps = 0
var durSec time.Duration
startTime, lastLoopTime, lastSecond = now, now, now
sdl.WM_SetCaption("Up & running!", "")
for looping {
now = time.Now()
if durSec = now.Sub(lastSecond); durSec.Seconds() >= 1 {
sdl.WM_SetCaption(fmt.Sprintf("%v×%v @ %vfps", sdlScreen.W, sdlScreen.H, fps), "")
fps = 0
lastSecond = now
} else {
fps++
}
if evt := sdl.PollEvent(); evt != nil {
switch event := evt.(type) {
case *sdl.ResizeEvent:
reinitScreen(int(event.W), int(event.H))
case *sdl.QuitEvent:
looping = false
}
}
if doRtt || noRtt {
renderToTexture()
}
if !noRtt {
renderToScreen()
}
sdl.GL_SwapBuffers()
lastLoopTime = now
}
sdl.Quit()
}