func (env *Environment) Load(ctx gl.Context) {
env.prg.CreateAndLink(ctx,
glutil.ShaderCompile(gl.VERTEX_SHADER, "env-vert.glsl", assets.VertexShader),
glutil.ShaderCompile(gl.FRAGMENT_SHADER, "env-frag.glsl", assets.FragmentShader))
env.uniforms.view = env.prg.Uniform(ctx, "view")
env.uniforms.proj = env.prg.Uniform(ctx, "proj")
env.uniforms.shadowColor = env.prg.Uniform(ctx, "shadowColor")
env.uniforms.glyphs = env.prg.Uniform(ctx, "texglyph")
env.uniforms.icons = env.prg.Uniform(ctx, "texicon")
env.uniforms.glyphconf = env.prg.Uniform(ctx, "glyphconf")
env.attribs.vertex = env.prg.Attrib(ctx, "vertex")
env.attribs.color = env.prg.Attrib(ctx, "color")
env.attribs.dist = env.prg.Attrib(ctx, "dist")
env.attribs.texcoord = env.prg.Attrib(ctx, "texcoord")
env.attribs.touch = env.prg.Attrib(ctx, "touch")
env.buffers.indices = glutil.NewUintBuffer(ctx, []uint32{}, gl.STREAM_DRAW)
env.buffers.verts = glutil.NewFloatBuffer(ctx, []float32{}, gl.STREAM_DRAW)
env.buffers.colors = glutil.NewFloatBuffer(ctx, []float32{}, gl.STREAM_DRAW)
env.buffers.dists = glutil.NewFloatBuffer(ctx, []float32{}, gl.STREAM_DRAW)
env.buffers.texcoords = glutil.NewFloatBuffer(ctx, []float32{}, gl.STREAM_DRAW)
env.buffers.touches = glutil.NewFloatBuffer(ctx, []float32{}, gl.STREAM_DRAW)
}
func New(ctx gl.Context, color Color) *Material {
mtrl := &Material{
BehaviorFlags: DescriptorRaised,
icx: -1,
icy: -1,
}
mtrl.cr, mtrl.cg, mtrl.cb, mtrl.ca = color.RGBA()
// material has user-defined width and height, and precisely 1dp depth.
mtrl.vbuf = glutil.NewFloatBuffer(ctx, []float32{
0, 0, 0,
0, 1, 0,
1, 1, 0,
1, 0, 0,
0, 0, -1,
0, 1, -1,
1, 1, -1,
1, 0, -1,
}, gl.STATIC_DRAW)
mtrl.ibuf = glutil.NewUintBuffer(ctx, []uint32{
0, 2, 1, 0, 3, 2,
2, 7, 6, 2, 3, 7,
7, 3, 0, 7, 0, 4,
4, 6, 7, 4, 5, 6,
6, 1, 2, 6, 5, 1,
1, 5, 4, 1, 4, 0,
}, gl.STATIC_DRAW)
n := float32(0.0234375)
mtrl.uvbuf = glutil.NewFloatBuffer(ctx, []float32{
0, n,
0, 0,
n, 0,
n, n,
0, n,
0, 0,
n, 0,
n, n,
}, gl.STATIC_DRAW)
mtrl.reloadProgram(ctx)
return mtrl
}
// TODO just how many samples do we want/need to display something useful?
func NewWaveform(ctx gl.Context, n int, in snd.Sound) (*Waveform, error) {
wf := &Waveform{Material: env.NewMaterial(ctx), Sound: in}
wf.Drawer = wf.Draw
wf.outs = make([][]float64, n)
for i := range wf.outs {
wf.outs[i] = make([]float64, in.BufferLen()*in.Channels())
}
wf.samples = make([]float64, in.BufferLen()*in.Channels()*n)
wf.verts = make([]float32, len(wf.samples)*2)
wf.prg.CreateAndLink(ctx,
glutil.ShaderAsset(gl.VERTEX_SHADER, "basic-vert.glsl"),
glutil.ShaderAsset(gl.FRAGMENT_SHADER, "basic-frag.glsl"))
wf.vbuf = glutil.NewFloatBuffer(ctx, wf.verts, gl.STREAM_DRAW)
wf.uw = wf.prg.Uniform(ctx, "world")
wf.uv = wf.prg.Uniform(ctx, "view")
wf.up = wf.prg.Uniform(ctx, "proj")
wf.uc = wf.prg.Uniform(ctx, "color")
wf.ap = wf.prg.Attrib(ctx, "position")
return wf, nil
}