func NewFrameBuffer(width, height int) (this *FrameBuffer) {
this = &FrameBuffer{gl.GenFramebuffer(), gl.GenTexture(), gl.GenTexture()}
this.Resize(width, height)
var outer gl.Framebuffer
{
params := []int32{0}
gl.GetIntegerv(gl.FRAMEBUFFER_BINDING, params)
outer = gl.Framebuffer(params[0])
}
this.Framebuffer.Bind()
gl.FramebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_RECTANGLE, this.RenderTexture, 0)
gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_STENCIL_ATTACHMENT, gl.TEXTURE_RECTANGLE, this.DepthTexture, 0)
outer.Bind()
if gl.CheckFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE {
this.Delete()
panic("framebuffer incomplete")
}
return
}
func TexturesTest() {
out := make([]int32, 1)
gl.GetIntegerv(gl.MAX_TEXTURE_IMAGE_UNITS, out)
maxUnits := int(out[0])
for i := 0; i < maxUnits; i++ {
gl.ActiveTexture(gl.GLenum(gl.TEXTURE0 + i))
gl.GetIntegerv(gl.TEXTURE_BINDING_1D, out)
texture := gl.Texture(out[0])
if texture != 0 {
fmt.Println("unit: ", i, " texture1d: ", texture)
}
gl.GetIntegerv(gl.TEXTURE_BINDING_2D, out)
texture = gl.Texture(out[0])
if texture != 0 {
fmt.Println("unit: ", i, " texture2d: ", texture)
}
gl.GetIntegerv(gl.TEXTURE_BINDING_RECTANGLE, out)
texture = gl.Texture(out[0])
if texture != 0 {
fmt.Println("unit: ", i, " textureRect: ", texture)
}
gl.GetIntegerv(gl.TEXTURE_BINDING_CUBE_MAP, out)
texture = gl.Texture(out[0])
if texture != 0 {
fmt.Println("unit: ", i, " textureCube: ", texture)
}
gl.GetIntegerv(gl.TEXTURE_BINDING_3D, out)
texture = gl.Texture(out[0])
if texture != 0 {
fmt.Println("unit: ", i, " texture3d: ", texture)
}
}
gl.ActiveTexture(gl.TEXTURE0)
}