// drawScene renders the scene consisting of one VAO.
func (tb *tbtag) drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.UseProgram(tb.shaders)
gl.Uniform1i(tb.sampler, 0)
gl.ActiveTexture(gl.TEXTURE0 + 0)
gl.BindTexture(gl.TEXTURE_2D, tb.texture.Tid)
gl.BindVertexArray(tb.vao)
tb.mvp32 = renderMatrix(tb.ortho, tb.mvp32)
gl.UniformMatrix4fv(tb.mvpref, 1, false, tb.mvp32.Pointer())
gl.DrawElements(gl.TRIANGLES, int32(len(tb.faces)), gl.UNSIGNED_BYTE, gl.Pointer(nil))
// cleanup
gl.ActiveTexture(0)
gl.UseProgram(0)
gl.BindVertexArray(0)
}
// Implements Renderer interface.
func (gc *opengl) Render(v *Vis) {
if v.Mesh != nil && v.Shader != nil {
gl.BindVertexArray(v.Mesh.Vao)
gl.UseProgram(v.Shader.Program)
gc.bindShaderUniforms(v)
gl.DrawElements(gl.TRIANGLES, int32(len(v.Mesh.F)), gl.UNSIGNED_SHORT, gl.Pointer(nil))
// cleanup.
gl.ActiveTexture(gl.TEXTURE0)
gl.UseProgram(0)
gl.BindVertexArray(0)
}
}
// Implements Renderer interface.
func (gc *opengl) MapTexture(tid int, t *data.Texture) {
tmap := map[int]uint32{
0: gl.TEXTURE0,
1: gl.TEXTURE1,
2: gl.TEXTURE2,
3: gl.TEXTURE3,
4: gl.TEXTURE4,
5: gl.TEXTURE5,
6: gl.TEXTURE6,
7: gl.TEXTURE7,
8: gl.TEXTURE8,
9: gl.TEXTURE9,
}
gl.ActiveTexture(tmap[tid])
gl.BindTexture(gl.TEXTURE_2D, t.Tid)
}