func (e *Engine) Draw(c size.Event) {
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0.2, 0.2, 0.2, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
m := mgl32.Perspective(0.785, float32(c.WidthPt/c.HeightPt), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projection, m[:])
eye := mgl32.Vec3{0, 0, 8}
center := mgl32.Vec3{0, 0, 0}
up := mgl32.Vec3{0, 1, 0}
m = mgl32.LookAtV(eye, center, up)
gl.UniformMatrix4fv(e.shader.view, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLoc.X/c.WidthPt-0.5)*3.14*2, mgl32.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.modelx, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLoc.Y/c.HeightPt-0.5)*3.14, mgl32.Vec3{1, 0, 0})
gl.UniformMatrix4fv(e.shader.modely, m[:])
coordsPerVertex := 3
for _, obj := range e.shape.Objs {
gl.BindBuffer(gl.ARRAY_BUFFER, obj.coord)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, coordsPerVertex, gl.FLOAT, false, 12, 0)
if obj.useuv == true {
gl.Uniform1i(e.shader.useuv, 1)
texCoordsPerVertex := 2
gl.BindBuffer(gl.ARRAY_BUFFER, obj.uvcoord)
gl.EnableVertexAttribArray(e.shader.vertTexCoord)
gl.VertexAttribPointer(e.shader.vertTexCoord, texCoordsPerVertex, gl.FLOAT, false, 8, 0)
gl.BindTexture(gl.TEXTURE_2D, obj.tex)
} else {
gl.Uniform1i(e.shader.useuv, 0)
gl.Uniform4f(e.shader.color, obj.color[0], obj.color[1], obj.color[2], obj.color[3])
}
gl.DrawArrays(gl.TRIANGLES, 0, obj.vcount)
if obj.useuv {
gl.DisableVertexAttribArray(e.shader.vertTexCoord)
}
gl.DisableVertexAttribArray(e.shader.vertCoord)
}
debug.DrawFPS(c)
}
func (e *Engine) Draw(c size.Event) {
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0.5, 0.8, 0.8, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
gl.Uniform3fv(e.shader.lightdir, []float32{0.5, 0.6, 0.7})
m := mgl32.Perspective(1.3, float32(c.WidthPt/c.HeightPt), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projectionmatrix, m[:])
eye := mgl32.Vec3{0, 0, 0.2}
center := mgl32.Vec3{0, 0, 0}
up := mgl32.Vec3{0, 1, 0}
m = mgl32.LookAtV(eye, center, up)
gl.UniformMatrix4fv(e.shader.viewmatrix, m[:])
m = mgl32.HomogRotate3D((e.touchx/float32(c.WidthPt)-0.5)*6.28, mgl32.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.modelmatrix, m[:])
m = mgl32.HomogRotate3D((e.touchx/float32(c.WidthPt)-0.5)*6.28, mgl32.Vec3{0, -1, 0})
gl.UniformMatrix4fv(e.shader.lightmatrix, m[:])
coordsPerVertex := 3
for _, obj := range e.shape.Objs {
gl.BindBuffer(gl.ARRAY_BUFFER, obj.coord)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, coordsPerVertex, gl.FLOAT, false, 12, 0)
texCoordsPerVertex := 2
gl.BindBuffer(gl.ARRAY_BUFFER, obj.uvcoord)
gl.EnableVertexAttribArray(e.shader.texcoord)
gl.VertexAttribPointer(e.shader.texcoord, texCoordsPerVertex, gl.FLOAT, false, 8, 0)
gl.BindBuffer(gl.ARRAY_BUFFER, obj.normal)
gl.EnableVertexAttribArray(e.shader.normal)
gl.VertexAttribPointer(e.shader.normal, 3, gl.FLOAT, false, 12, 0)
gl.BindTexture(gl.TEXTURE_2D, obj.tex)
gl.DrawArrays(gl.TRIANGLES, 0, obj.vcount)
gl.DisableVertexAttribArray(e.shader.texcoord)
gl.DisableVertexAttribArray(e.shader.normal)
gl.DisableVertexAttribArray(e.shader.vertCoord)
}
debug.DrawFPS(c)
}
//export drawgl
func drawgl(ctx uintptr) {
// The call to lockContext loads the OpenGL context into
// thread-local storage for use by the underlying GL calls
// done in the user's Draw function. We need to stay on
// the same thread throughout Draw, so we LockOSThread.
runtime.LockOSThread()
C.setContext(unsafe.Pointer(ctx))
initGLOnce.Do(initGL)
// TODO not here?
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
if cb.Draw != nil {
cb.Draw()
}
// TODO
//C.unlockContext(ctx)
// This may unlock the original main thread, but that's OK,
// because by the time it does the thread has already entered
// C.runApp, which won't give the thread up.
runtime.UnlockOSThread()
}
func (scene *Floor) Draw(camera Camera) {
shader, _ := scene.UseShader(nil)
gl.Enable(gl.STENCIL_TEST)
gl.StencilFunc(gl.ALWAYS, 1, 0xFF)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.REPLACE)
gl.StencilMask(0xFF)
gl.DepthMask(false)
gl.Clear(gl.STENCIL_BUFFER_BIT)
// Draw floor
gl.Uniform3fv(shader.Uniform("material.ambient"), []float32{0.1, 0.1, 0.1})
scene.Shape.Draw(shader, camera)
// Draw reflections
gl.StencilFunc(gl.EQUAL, 1, 0xFF)
gl.StencilMask(0x00)
gl.DepthMask(true)
view := camera.View()
gl.Uniform3fv(shader.Uniform("material.ambient"), []float32{0.3, 0.3, 0.3})
for _, node := range scene.reflected {
model := node.Transform(scene.transform)
gl.UniformMatrix4fv(shader.Uniform("model"), model[:])
normal := model.Mul4(view).Inv().Transpose()
gl.UniformMatrix4fv(shader.Uniform("normalMatrix"), normal[:])
node.Draw(camera)
}
gl.Disable(gl.STENCIL_TEST)
}
func windowDrawLoop(cb Callbacks, w *C.ANativeWindow, queue *C.AInputQueue) {
C.createEGLWindow(w)
// TODO: is the library or the app responsible for clearing the buffers?
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
C.eglSwapBuffers(C.display, C.surface)
if errv := gl.GetError(); errv != gl.NO_ERROR {
log.Printf("GL initialization error: %s", errv)
}
geom.Width = geom.Pt(float32(C.windowWidth) / geom.PixelsPerPt)
geom.Height = geom.Pt(float32(C.windowHeight) / geom.PixelsPerPt)
for {
processEvents(cb, queue)
select {
case <-windowDestroyed:
return
default:
if cb.Draw != nil {
cb.Draw()
}
C.eglSwapBuffers(C.display, C.surface)
}
}
}
func draw() {
if program.Value == 0 {
initGL()
initCL()
}
if numPlatforms == 0 {
gl.ClearColor(1, 0, 0, 1)
} else {
gl.ClearColor(0, 1, 0, 1)
}
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.UseProgram(program)
blue += 0.01
if blue > 1 {
blue = 0
}
gl.Uniform4f(color, 0, 0, blue, 1)
gl.Uniform2f(offset, float32(touchLoc.X/geom.Width), float32(touchLoc.Y/geom.Height))
gl.BindBuffer(gl.ARRAY_BUFFER, buf)
gl.EnableVertexAttribArray(position)
gl.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0)
gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
gl.DisableVertexAttribArray(position)
debug.DrawFPS()
}
//export drawgl
func drawgl(ctx C.GLintptr) {
// The call to lockContext loads the OpenGL context into
// thread-local storage for use by the underlying GL calls
// done in the user's Draw function. We need to stay on
// the same thread throughout Draw, so we LockOSThread.
runtime.LockOSThread()
C.lockContext(ctx)
initGLOnce.Do(initGL)
events.Lock()
pending := events.pending
events.pending = nil
events.Unlock()
for _, e := range pending {
if cb.Touch != nil {
cb.Touch(e)
}
}
// TODO: is the library or the app responsible for clearing the buffers?
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
if cb.Draw != nil {
cb.Draw()
}
C.unlockContext(ctx)
// This may unlock the original main thread, but that's OK,
// because by the time it does the thread has already entered
// C.runApp, which won't give the thread up.
runtime.UnlockOSThread()
}
func (video *Video) drawFrame() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.UseProgram(video.prog)
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, video.texture)
log.Print("Reading")
frame := <-video.pixelBuffer
buf := make([]float32, len(frame))
log.Print("Read frame")
for k, v := range frame {
buf[k] = float32(v)
}
log.Print("Writing")
if video.pixelBuffer != nil {
gl.TexImage2D(gl.TEXTURE_2D, 0, 256, 256, gl.RGBA,
gl.UNSIGNED_SHORT_4_4_4_4, f32.Bytes(binary.LittleEndian, buf...))
}
log.Print("Wrote")
gl.DrawArrays(gl.TRIANGLES, 0, 6)
video.fpsmanager.FramerateDelay()
}
func main() {
app.Main(func(a app.App) {
var c event.Config
var eng *WritableEngine
var root *sprite.Node
startClock := time.Now()
for e := range a.Events() {
switch e := event.Filter(e).(type) {
case event.Config:
c = e
case event.Draw:
if eng == nil || root == nil {
eng = NewWritableEngine(
glsprite.Engine(),
image.Rect(0, 0, int(c.Width.Px(c.PixelsPerPt)), int(c.Height.Px(c.PixelsPerPt))),
color.White,
)
root = loadScene(eng, loadTextures(eng))
go listen(eng, ":8080")
}
now := clock.Time(time.Since(startClock) * 60 / time.Second)
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.BlendEquation(gl.FUNC_ADD)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
if eng != nil && root != nil {
eng.Render(root, now, c)
}
a.EndDraw()
}
}
})
}
func onPaint(c size.Event) {
//清场
gl.ClearColor(1, 1, 1, 1) //设置背景颜色
gl.Clear(gl.COLOR_BUFFER_BIT)
//使用program
gl.UseProgram(program)
gl.Uniform4f(color, 0, 0.5, 0.8, 1) //设置color对象值,设置4个浮点数.
//offset有两个值X,Y,窗口左上角为(0,0),右下角为(1,1)
//gl.Uniform4f(offset,5.0,1.0,1.0,1.0 )
//gl.Uniform2f(offset,offsetx,offsety )//为2参数的uniform变量赋值
//log.Println("offset:",offsetx,offsety, 0, 0)
gl.UniformMatrix4fv(scan, []float32{
float32(touchLoc.X/c.WidthPt*4 - 2), 0, 0, 0,
0, float32(touchLoc.Y/c.HeightPt*4 - 2), 0, 0,
0, 0, 0, 0,
0, 0, 0, 1,
})
gl.BindBuffer(gl.ARRAY_BUFFER, buf)
gl.EnableVertexAttribArray(position)
/*glVertexAttribPointer 指定了渲染时索引值为 index 的顶点属性数组的数据格式和位置。调用gl.vertexAttribPointer()方法，把顶点着色器中某个属性相对应的通用属性索引连接到绑定的webGLBUffer对象上。
index 指定要修改的顶点属性的索引值
size 指定每个顶点属性的组件数量。必须为1、2、3或者4。初始值为4。（如position是由3个（x,y,z）组成，而颜色是4个（r,g,b,a））
type 指定数组中每个组件的数据类型。可用的符号常量有GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT,GL_UNSIGNED_SHORT, GL_FIXED, 和 GL_FLOAT，初始值为GL_FLOAT。
normalized 指定当被访问时，固定点数据值是否应该被归一化（GL_TRUE）或者直接转换为固定点值（GL_FALSE）。
stride 指定连续顶点属性之间的偏移量。如果为0，那么顶点属性会被理解为：它们是紧密排列在一起的。初始值为0。
pointer 指定第一个组件在数组的第一个顶点属性中的偏移量。该数组与GL_ARRAY_BUFFER绑定，储存于缓冲区中。初始值为0；
*/
gl.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0) //更新position值
gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
gl.DisableVertexAttribArray(position)
debug.DrawFPS(c)
}
func (e *Engine) Render(sz size.Event) {
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(e.startTime) * 60 / time.Second)
e.arranger.sz = &sz
e.eng.Render(e.scene, now, sz)
}
func draw(c event.Config) {
secondsFromStart := time.Since(startTime) * 60 / time.Second
now := clock.Time(secondsFromStart)
currentBottomRight := geom.Point{c.Width, c.Height}
if bottomRight == nil || currentBottomRight != *bottomRight {
bottomRight = ¤tBottomRight
log.Printf("Device Sizing: %vx%v PixelsPerPt:%v",
c.Width,
c.Height,
c.PixelsPerPt,
)
}
if fullScene == nil {
fullScene = setupScene(c.Width, c.Height, secondsFromStart)
}
gl.ClearColor(0, 0, 0, 0)
gl.Clear(gl.COLOR_BUFFER_BIT)
eng.Render(fullScene, now, c)
debug.DrawFPS(c)
}
func onDraw(c config.Event) {
gl.ClearColor(1, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
debug.DrawFPS(c)
DrawResult(c, <-speed_rate)
}
func onPaint(c size.Event) {
gl.ClearColor(0, 0.3, 0.3, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.UseProgram(program)
green += direction
if green > 1 {
green = 1
direction = -direction
}
if green < 0.4 {
green = 0.4
direction = -direction
}
gl.Uniform4f(color, 0, green, 0, 1)
gl.Uniform2f(offset, touchX/float32(c.WidthPx), touchY/float32(c.HeightPx))
gl.BindBuffer(gl.ARRAY_BUFFER, buf)
gl.BufferData(gl.ARRAY_BUFFER, triangleData, gl.STATIC_DRAW) // ?
gl.EnableVertexAttribArray(position)
gl.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0)
gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
gl.DisableVertexAttribArray(position)
debug.DrawFPS(c)
}
func main() {
app.Main(func(a app.App) {
addr := "127.0.0.1:" + apptest.Port
log.Printf("addr: %s", addr)
conn, err := net.Dial("tcp", addr)
if err != nil {
log.Fatal(err)
}
defer conn.Close()
log.Printf("dialled")
comm := &apptest.Comm{
Conn: conn,
Fatalf: log.Panicf,
Printf: log.Printf,
}
comm.Send("hello_from_testapp")
comm.Recv("hello_from_host")
color := "red"
sendPainting := false
for e := range a.Events() {
switch e := app.Filter(e).(type) {
case lifecycle.Event:
switch e.Crosses(lifecycle.StageVisible) {
case lifecycle.CrossOn:
comm.Send("lifecycle_visible")
sendPainting = true
case lifecycle.CrossOff:
comm.Send("lifecycle_not_visible")
}
case size.Event:
comm.Send("size", e.PixelsPerPt, e.Orientation)
case paint.Event:
if color == "red" {
gl.ClearColor(1, 0, 0, 1)
} else {
gl.ClearColor(0, 1, 0, 1)
}
gl.Clear(gl.COLOR_BUFFER_BIT)
a.EndPaint(e)
if sendPainting {
comm.Send("paint", color)
sendPainting = false
}
case touch.Event:
comm.Send("touch", e.Type, e.X, e.Y)
if e.Type == touch.TypeEnd {
if color == "red" {
color = "green"
} else {
color = "red"
}
sendPainting = true
}
}
}
})
}
func (e *Engine) Draw(c size.Event) {
since := time.Now().Sub(e.started)
//gl.Enable()
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
m := mgl32.Perspective(0.785, float32(c.WidthPt/c.HeightPt), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projection, m[:])
eye := mgl32.Vec3{3, 3, 3}
center := mgl32.Vec3{0, 0, 0}
up := mgl32.Vec3{0, 1, 0}
m = mgl32.LookAtV(eye, center, up)
gl.UniformMatrix4fv(e.shader.view, m[:])
m = mgl32.HomogRotate3D(float32(since.Seconds()), mgl32.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.model, m[:])
gl.BindBuffer(gl.ARRAY_BUFFER, e.shape.buf)
coordsPerVertex := 3
texCoordsPerVertex := 2
vertexCount := len(cubeData) / (coordsPerVertex + texCoordsPerVertex)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, coordsPerVertex, gl.FLOAT, false, 20, 0) // 4 bytes in float, 5 values per vertex
gl.EnableVertexAttribArray(e.shader.vertTexCoord)
gl.VertexAttribPointer(e.shader.vertTexCoord, texCoordsPerVertex, gl.FLOAT, false, 20, 12)
gl.BindTexture(gl.TEXTURE_2D, e.shape.texture)
gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
gl.DisableVertexAttribArray(e.shader.vertCoord)
debug.DrawFPS(c)
}
func (e *Engine) Draw(c event.Config) {
since := time.Now().Sub(e.started)
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
// Setup MVP
var m mgl.Mat4
m = mgl.Perspective(0.785, float32(c.Width/c.Height), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projection, m[:])
m = mgl.LookAtV(
mgl.Vec3{3, 3, 3}, // eye
mgl.Vec3{0, 0, 0}, // center
mgl.Vec3{0, 1, 0}, // up
)
gl.UniformMatrix4fv(e.shader.view, m[:])
m = mgl.HomogRotate3D(float32(since.Seconds()), mgl.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.model, m[:])
// Draw our shape
gl.BindBuffer(gl.ARRAY_BUFFER, e.shape.buf)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, e.shape.coordsPerVertex, gl.FLOAT, false, 20, 0) // 4 bytes in float, 5 values per vertex
gl.EnableVertexAttribArray(e.shader.vertTexCoord)
gl.VertexAttribPointer(e.shader.vertTexCoord, e.shape.texCoordsPerVertex, gl.FLOAT, false, 20, 12)
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, e.shape.texture)
gl.DrawArrays(gl.TRIANGLES, 0, e.shape.vertexCount)
gl.DisableVertexAttribArray(e.shader.vertCoord)
//debug.DrawFPS(c)
}
func onPaint(sz size.Event) {
if scene == nil {
loadScene(sz)
}
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(startTime) * 60 / time.Second)
eng.Render(scene, now, sz)
}
func main() {
app.Run(app.Callbacks{
Draw: func() {
gl.ClearColor(0, 0, 1, 1) // blue
gl.Clear(gl.COLOR_BUFFER_BIT)
},
Touch: func(e event.Touch) { fmt.Println(e) },
})
}
func onPaint() {
if scene == nil {
loadScene()
}
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(startTime) * 60 / time.Second)
eng.Render(scene, now, cfg)
debug.DrawFPS(cfg)
}
func draw(c event.Config) {
if scene == nil {
loadScene(c)
}
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(startTime) * 60 / time.Second)
eng.Render(scene, now, c)
debug.DrawFPS(c)
}
func (e *Engine) Draw(c size.Event) {
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
m := mgl32.Perspective(0.785, float32(c.WidthPt/c.HeightPt), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projection, m[:])
eye := mgl32.Vec3{0, 3, 3}
center := mgl32.Vec3{0, 0, 0}
up := mgl32.Vec3{0, 1, 0}
m = mgl32.LookAtV(eye, center, up)
gl.UniformMatrix4fv(e.shader.view, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLocX*5/c.WidthPt), mgl32.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.modelx, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLocY*5/c.HeightPt), mgl32.Vec3{1, 0, 0})
gl.UniformMatrix4fv(e.shader.modely, m[:])
gl.BindBuffer(gl.ARRAY_BUFFER, e.shape.buf)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, coordsPerVertex, gl.FLOAT, false, 0, 0)
gl.BindBuffer(gl.ARRAY_BUFFER, e.shape.colorbuf)
gl.EnableVertexAttribArray(e.shader.color)
gl.VertexAttribPointer(e.shader.color, colorsPerVertex, gl.FLOAT, false, 0, 0) //更新color值
gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
gl.DisableVertexAttribArray(e.shader.vertCoord)
gl.DisableVertexAttribArray(e.shader.color)
debug.DrawFPS(c)
}
func onPaint(sz size.Event) {
gl.ClearColor(rgb(156), rgb(39), rgb(176), 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
var rotationMatrix = []float32{
f32.Cos(-alpha), -f32.Sin(-alpha), 0.0,
f32.Sin(-alpha), f32.Cos(-alpha), 0.0,
0.0, 0.0, 1.0,
}
gl.UseProgram(program)
// setting color
gl.Uniform4f(color, rgb(255), rgb(255), rgb(255), 1)
gl.UniformMatrix3fv(matrixId, rotationMatrix)
gl.Uniform1f(resolutionId, resIndex)
gl.BindBuffer(gl.ARRAY_BUFFER, swasBuffer)
gl.EnableVertexAttribArray(position)
gl.VertexAttribPointer(position, 3, gl.FLOAT, false, 0, 0)
gl.DrawArrays(gl.LINES, 0, 16)
gl.DisableVertexAttribArray(position)
gl.UseProgram(texProgram)
// setting color
gl.Uniform4f(color2, rgb(130), rgb(50), rgb(80), 1)
gl.Uniform1f(resolutionId2, resIndex)
gl.UniformMatrix3fv(matrixId2, rotationMatrix)
gl.BindBuffer(gl.ARRAY_BUFFER, quadBuffer)
gl.EnableVertexAttribArray(position2)
gl.VertexAttribPointer(position2, 3, gl.FLOAT, false, 0, 0)
gl.BindBuffer(gl.ARRAY_BUFFER, quadTexBuffer)
gl.EnableVertexAttribArray(textureCoords)
gl.VertexAttribPointer(textureCoords, 2, gl.FLOAT, false, 0, 0)
gl.Uniform1i(gl.GetUniformLocation(texProgram, "myTexture"), 0)
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, textureId)
gl.DrawArrays(gl.TRIANGLES, 0, 6)
gl.DisableVertexAttribArray(position2)
gl.DisableVertexAttribArray(textureCoords)
if spin == true {
alpha += 0.1
}
if alpha >= 360 {
alpha = 0.0
}
}
func (e *Engine) Draw(c config.Event) {
now := time.Now()
interval := now.Sub(e.lastTick)
e.lastTick = now
// Handle key presses
var camDelta mgl.Vec3
if e.bindings.Pressed(KeyCamForward) {
camDelta[2] -= moveSpeed
}
if e.bindings.Pressed(KeyCamReverse) {
camDelta[2] += moveSpeed
}
if e.bindings.Pressed(KeyCamLeft) {
camDelta[0] -= moveSpeed
}
if e.bindings.Pressed(KeyCamRight) {
camDelta[0] += moveSpeed
}
if e.bindings.Pressed(KeyCamUp) {
e.camera.MoveTo(e.camera.Position().Add(mgl.Vec3{0, moveSpeed, 0}))
}
if e.bindings.Pressed(KeyCamDown) {
e.camera.MoveTo(e.camera.Position().Add(mgl.Vec3{0, -moveSpeed, 0}))
}
if camDelta[0]+camDelta[1]+camDelta[2] != 0 {
e.following = false
e.camera.Move(camDelta)
} else if e.following {
pos := e.world.Focus().Position()
e.camera.Lerp(pos.Add(e.followOffset), pos, 0.1)
}
gl.ClearColor(0, 0, 0, 1)
//gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.Enable(gl.DEPTH_TEST)
//gl.Disable(gl.CULL_FACE)
//gl.DepthFunc(gl.LESS)
//gl.SampleCoverage(4.0, false)
if !e.paused {
err := e.world.Tick(interval)
if err != nil {
e.paused = true
e.gameover = true
}
}
e.scene.Draw(e.camera)
gl.Disable(gl.DEPTH_TEST)
debug.DrawFPS(c)
}
func onPaint(e size.Event) {
if scene == nil {
loadScene()
}
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(start) * 60 / time.Second)
eng.Render(scene, now, e)
if *dbg {
debug.DrawFPS(e)
}
}
func (e *Engine) Draw(c size.Event) {
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LESS)
gl.ClearColor(0.2, 0.2, 0.2, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Clear(gl.DEPTH_BUFFER_BIT)
gl.UseProgram(e.shader.program)
m := mgl32.Perspective(0.785, float32(c.WidthPt/c.HeightPt), 0.1, 10.0)
gl.UniformMatrix4fv(e.shader.projection, m[:])
eye := mgl32.Vec3{0, 0, 5}
center := mgl32.Vec3{0, 0, 0}
up := mgl32.Vec3{0, 1, 0}
m = mgl32.LookAtV(eye, center, up)
gl.UniformMatrix4fv(e.shader.view, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLoc.X*10/c.WidthPt), mgl32.Vec3{0, 1, 0})
gl.UniformMatrix4fv(e.shader.modelx, m[:])
m = mgl32.HomogRotate3D(float32(e.touchLoc.Y*10/c.HeightPt), mgl32.Vec3{1, 0, 0})
gl.UniformMatrix4fv(e.shader.modely, m[:])
coordsPerVertex := 3
for _, buf := range e.shape.bufs {
gl.BindBuffer(gl.ARRAY_BUFFER, buf.coord)
gl.EnableVertexAttribArray(e.shader.vertCoord)
gl.VertexAttribPointer(e.shader.vertCoord, coordsPerVertex, gl.FLOAT, false, 0, 0)
gl.Uniform4f(e.shader.color, buf.color[0], buf.color[1], buf.color[2], buf.color[3])
gl.DrawArrays(gl.TRIANGLES, 0, buf.vcount)
gl.DisableVertexAttribArray(e.shader.vertCoord)
}
debug.DrawFPS(c)
}
func onPaint(sz size.Event) {
if scene == nil {
images = glutil.NewImages()
fps = debug.NewFPS(images)
eng = glsprite.Engine(images)
loadScene()
}
gl.ClearColor(1, 1, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(startTime) * 60 / time.Second)
eng.Render(scene, now, sz)
fps.Draw(sz)
}
func draw(c event.Config) {
select {
case <-determined:
if ok {
gl.ClearColor(0, 1, 0, 1)
} else {
gl.ClearColor(1, 0, 0, 1)
}
default:
gl.ClearColor(0, 0, 0, 1)
}
gl.Clear(gl.COLOR_BUFFER_BIT)
debug.DrawFPS(c)
}
func onPaint(c config.Event) {
if !started {
touchLoc = geom.Point{c.Width / 2, c.Height / 2}
started = true
}
if scene == nil {
loadScene()
}
gl.ClearColor(242/255.0, 240/255.0, 217/255.0, 1) // gophercon bg color
gl.Clear(gl.COLOR_BUFFER_BIT)
now := clock.Time(time.Since(startClock) * 60 / time.Second)
eng.Render(scene, now, c)
debug.DrawFPS(c)
}
func onDraw(sz size.Event) {
select {
case <-determined:
if ok {
gl.ClearColor(0, 1, 0, 1)
} else {
gl.ClearColor(1, 0, 0, 1)
}
default:
gl.ClearColor(0, 0, 0, 1)
}
gl.Clear(gl.COLOR_BUFFER_BIT)
debug.DrawFPS(sz)
}