func (glRenderer *OpenglRenderer) enableCullFace(cullFace bool) {
if cullFace == glRenderer.cullFace {
return
}
if cullFace {
gl.Enable(gl.CULL_FACE)
} else {
gl.Disable(gl.CULL_FACE)
}
glRenderer.cullFace = cullFace
}
func (glRenderer *OpenglRenderer) enableDepthTest(depthTest bool) {
if depthTest == glRenderer.depthTest {
return
}
if depthTest {
gl.Enable(gl.DEPTH_TEST)
} else {
gl.Disable(gl.DEPTH_TEST)
}
glRenderer.depthTest = depthTest
}
func (p *GeometryPass) DrawPass(scene *Scene) {
p.Buffer.Bind()
p.Buffer.Clear()
p.Material.Use()
/* Draw scene */
gl.Disable(gl.BLEND)
scene.Draw("geometry", p.Material.Shader)
gl.Enable(gl.BLEND)
p.Buffer.Unbind()
}
func (glRenderer *OpenglRenderer) renderPostEffect(pe postEffect) {
gl.UseProgram(pe.program)
gl.ActiveTexture(gl.TEXTURE0)
gl.BindTexture(gl.TEXTURE_2D, pe.textureId)
gl.Disable(gl.CULL_FACE)
gl.BindBuffer(gl.ARRAY_BUFFER, glRenderer.postEffectVbo)
setupUniforms(pe.shader)
vertAttrib := uint32(gl.GetAttribLocation(pe.program, gl.Str("vert\x00")))
gl.EnableVertexAttribArray(vertAttrib)
gl.VertexAttribPointer(vertAttrib, 2, gl.FLOAT, false, 4*4, gl.PtrOffset(0))
texCoordAttrib := uint32(gl.GetAttribLocation(pe.program, gl.Str("vertTexCoord\x00")))
gl.EnableVertexAttribArray(texCoordAttrib)
gl.VertexAttribPointer(texCoordAttrib, 2, gl.FLOAT, false, 4*4, gl.PtrOffset(2*4))
gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
gl.DisableVertexAttribArray(texCoordAttrib)
}
func draw(w *glfw.Window) {
//Get the horizontal split size of the window
sizex, sizey := w.GetSize()
var eyesize mgl32.Vec2
eyesize[0] = float32(sizex / 2.0)
eyesize[1] = float32(sizey)
gl.Enable(gl.SCISSOR_TEST)
gl.Scissor(0, 0, int32(eyesize[0]), int32(eyesize[1]))
gl.ClearColor(1, 0, 0, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Scissor(int32(eyesize[0]), 0, int32(eyesize[0]), int32(eyesize[1]))
gl.ClearColor(0, 0, 1, 1)
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.Disable(gl.SCISSOR_TEST)
}