func onPaint(glctx gl.Context, sz size.Event) {
glctx.ClearColor(0.5, 0.5, 0.5, 1)
glctx.Clear(gl.COLOR_BUFFER_BIT)
glctx.UseProgram(frameData.Program)
glctx.Uniform4f(frameData.Color, 0.5, 0.5, 0.5, 1)
// Put ourselves in the +x/+y quadrant (upper right quadrant)
glctx.Uniform2f(frameData.Offset, 0.0, 1.0)
glctx.EnableVertexAttribArray(frameData.Position)
manager.PaintLayers(sz, frameData)
// End drawing
glctx.DisableVertexAttribArray(frameData.Position)
}
func onPaint(glctx gl.Context, sz size.Event) {
glctx.ClearColor(1, 0, 0, 1)
glctx.Clear(gl.COLOR_BUFFER_BIT)
glctx.UseProgram(program)
green += 0.01
if green > 1 {
green = 0
}
glctx.Uniform4f(color, 0, green, 0, 1)
glctx.Uniform2f(offset, touchX/float32(sz.WidthPx), touchY/float32(sz.HeightPx))
glctx.BindBuffer(gl.ARRAY_BUFFER, buf)
glctx.EnableVertexAttribArray(position)
glctx.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0)
glctx.DrawArrays(gl.TRIANGLES, 0, vertexCount)
glctx.DisableVertexAttribArray(position)
fps.Draw(sz)
}
// This is the main rendering call that updates the current scene and all children in the scene
func appPaint(glctx gl.Context, sz size.Event, delta float32) {
glctx.ClearColor(currentScene.BGColor.R, currentScene.BGColor.G, currentScene.BGColor.B, currentScene.BGColor.A)
glctx.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
for _, child := range currentScene.Children {
child.act(delta)
child.draw(tempBatch, 1.0)
if len(InputChannel) > 0 {
for e := range InputChannel {
if child.Input != nil {
child.Input(child, e)
}
if len(InputChannel) == 0 {
break
}
}
}
}
glctx.UseProgram(program)
green += 0.01
if green > 1 {
green = 0
}
glctx.Uniform4f(color, 0, green, 0, 1)
glctx.Uniform2f(offset, touchX/float32(sz.WidthPx), touchY/float32(sz.HeightPx))
glctx.BindBuffer(gl.ARRAY_BUFFER, buf)
glctx.EnableVertexAttribArray(position)
glctx.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0)
glctx.DrawArrays(gl.TRIANGLES, 0, vertexCount)
glctx.DisableVertexAttribArray(position)
fps.Draw(sz)
}
func (prg Program) U2f(ctx gl.Context, dst gl.Uniform, v0, v1 float32) {
ctx.Uniform2f(dst, v0, v1)
}
