func getBuilder() *builder.Buffer {
select {
case buf := <-builderPool:
return buf
default:
return builder.New(chunkVertexType...)
}
}
func (m *Model) data() {
verts := m.Verts
m.array.Bind()
m.count = (len(verts) / 4) * 6
if modelState.maxIndex < m.count {
var data []byte
data, modelState.indexType = genElementBuffer(m.count)
modelState.indexBuffer.Bind(gl.ElementArrayBuffer)
modelState.indexBuffer.Data(data, gl.DynamicDraw)
modelState.maxIndex = m.count
}
buf := builder.New(modelTypes...)
in := modelVertexInternal{}
for _, v := range verts {
in.X = v.X
in.Y = v.Y
in.Z = v.Z
rect := v.Texture.Rect()
in.TX = uint16(rect.X)
in.TY = uint16(rect.Y)
in.TW = uint16(rect.Width)
in.TH = uint16(rect.Height)
in.TOffsetX = int16(16 * float64(rect.Width) * v.TextureX)
in.TOffsetY = int16(16 * float64(rect.Height) * v.TextureY)
in.TAtlas = int16(v.Texture.Atlas())
in.R = v.R
in.G = v.G
in.B = v.B
in.A = v.A
in.ID = v.id
modelfunc(buf, &in)
}
m.buffer.Bind(gl.ArrayBuffer)
data := buf.Data()
if len(data) < m.bufferSize {
gb := m.buffer.Map(gl.WriteOnly, m.bufferSize)
copy(gb, data)
m.buffer.Unmap()
} else {
m.buffer.Data(data, gl.DynamicDraw)
m.bufferSize = len(data)
}
}
func initTrans() {
if transCreated {
accum.Delete()
revealage.Delete()
transFramebuffer.Delete()
fbColor.Delete()
fbDepth.Delete()
mainFramebuffer.Delete()
}
transCreated = true
transFramebuffer = gl.NewFramebuffer()
transFramebuffer.Bind()
accum = gl.CreateTexture()
accum.Bind(gl.Texture2D)
accum.Image2DEx(0, lastWidth, lastHeight, gl.RGBA16F, gl.RGBA, gl.Float, nil)
accum.Parameter(gl.TextureMinFilter, gl.Linear)
accum.Parameter(gl.TextureMagFilter, gl.Linear)
transFramebuffer.Texture2D(gl.ColorAttachment0, gl.Texture2D, accum, 0)
revealage = gl.CreateTexture()
revealage.Bind(gl.Texture2D)
revealage.Image2DEx(0, lastWidth, lastHeight, gl.R16F, gl.Red, gl.Float, nil)
revealage.Parameter(gl.TextureMinFilter, gl.Linear)
revealage.Parameter(gl.TextureMagFilter, gl.Linear)
transFramebuffer.Texture2D(gl.ColorAttachment1, gl.Texture2D, revealage, 0)
transDepth = gl.CreateTexture()
transDepth.Bind(gl.Texture2D)
transDepth.Image2DEx(0, lastWidth, lastHeight, gl.DepthComponent24, gl.DepthComponent, gl.UnsignedByte, nil)
transDepth.Parameter(gl.TextureMinFilter, gl.Linear)
transDepth.Parameter(gl.TextureMagFilter, gl.Linear)
transFramebuffer.Texture2D(gl.DepthAttachment, gl.Texture2D, transDepth, 0)
chunkProgramT.Use()
gl.BindFragDataLocation(chunkProgramT, 0, "accum")
gl.BindFragDataLocation(chunkProgramT, 1, "revealage")
gl.DrawBuffers([]gl.Attachment{
gl.ColorAttachment0,
gl.ColorAttachment1,
})
mainFramebuffer = gl.NewFramebuffer()
mainFramebuffer.Bind()
fbColor = gl.CreateTexture()
fbColor.Bind(gl.Texture2DMultisample)
fbColor.Image2DSample(rSamples.Value(), lastWidth, lastHeight, gl.RGBA8, false)
mainFramebuffer.Texture2D(gl.ColorAttachment0, gl.Texture2DMultisample, fbColor, 0)
fbDepth = gl.CreateTexture()
fbDepth.Bind(gl.Texture2DMultisample)
fbDepth.Image2DSample(rSamples.Value(), lastWidth, lastHeight, gl.DepthComponent24, false)
mainFramebuffer.Texture2D(gl.DepthAttachment, gl.Texture2DMultisample, fbDepth, 0)
gl.UnbindFramebuffer()
transState.program = CreateProgram(vertexTrans, fragmentTrans)
transState.shader = &transShader{}
InitStruct(transState.shader, transState.program)
transState.array = gl.CreateVertexArray()
transState.array.Bind()
transState.buffer = gl.CreateBuffer()
transState.buffer.Bind(gl.ArrayBuffer)
data := builder.New()
for _, f := range []float32{-1, 1, 1, -1, -1, -1, 1, 1, 1, -1, -1, 1} {
data.Float(f)
}
transState.buffer.Data(data.Data(), gl.StaticDraw)
transState.shader.Position.Enable()
transState.shader.Position.Pointer(2, gl.Float, false, 8, 0)
}
func (c *cloudState) init() {
program := gl.CreateProgram()
v := gl.CreateShader(gl.VertexShader)
v.Source(glsl.Get("cloud_vertex"))
v.Compile()
if v.Parameter(gl.CompileStatus) == 0 {
panic(v.InfoLog())
} else {
log := v.InfoLog()
if len(log) > 0 {
fmt.Println(log)
}
}
g := gl.CreateShader(gl.GeometryShader)
g.Source(glsl.Get("cloud_geo"))
g.Compile()
if g.Parameter(gl.CompileStatus) == 0 {
panic(g.InfoLog())
} else {
log := g.InfoLog()
if len(log) > 0 {
fmt.Println(log)
}
}
f := gl.CreateShader(gl.FragmentShader)
f.Source(glsl.Get("cloud_fragment"))
f.Compile()
if f.Parameter(gl.CompileStatus) == 0 {
panic(f.InfoLog())
} else {
log := f.InfoLog()
if len(log) > 0 {
fmt.Println(log)
}
}
program.AttachShader(v)
program.AttachShader(g)
program.AttachShader(f)
program.Link()
program.Use()
c.program = program
InitStruct(&c.shader, c.program)
c.array = gl.CreateVertexArray()
c.array.Bind()
c.buffer = gl.CreateBuffer()
c.buffer.Bind(gl.ArrayBuffer)
c.shader.Position.Enable()
c.shader.Position.Pointer(3, gl.Float, false, 12, 0)
data := builder.New(builder.Float, builder.Float, builder.Float)
for x := -160; x < 160; x++ {
for y := -160; y < 160; y++ {
data.Float(float32(x))
data.Float(128)
data.Float(float32(y))
c.numPoints++
}
}
c.buffer.Data(data.Data(), gl.StaticDraw)
c.texture = gl.CreateTexture()
c.texture.Bind(gl.Texture2D)
c.texture.Image2D(0, 512, 512, gl.Red, gl.UnsignedByte, c.data)
c.texture.Parameter(gl.TextureMinFilter, gl.Nearest)
c.texture.Parameter(gl.TextureMagFilter, gl.Nearest)
}
