def compute_shader(
index: (pyshader.RES_INPUT, "GlobalInvocationId", "i32"),
pos1: (pyshader.RES_BUFFER, (0, 0), Array(vec4)),
pos2: (pyshader.RES_BUFFER, (0, 1), Array(vec4)),
material: (pyshader.RES_UNIFORM, (0, 2), LineStripMaterial.uniform_type),
):
p = pos1[index] * 1.0
dz = material.thickness
pos2[index * 2 + 0] = vec4(p.x, p.y + dz, p.z, 1.0)
pos2[index * 2 + 1] = vec4(p.x, p.y - dz, p.z, 1.0)
def fragment_shader(
in_tex: (RES_TEXTURE, 0, "2d f32"),
in_uv: (RES_INPUT, 0, vec2),
in_rot: (RES_UNIFORM, 1, vec4),
out_color: (RES_OUTPUT, 0, vec4),
):
# Distance squared to center of circle
d2 = in_uv.x**2 + in_uv.y**2
# Check if outside of map boundary
if d2 > 1.0:
# density = math.exp(50.0 * (1.0 - r)) # Display atmosphere
out_color = vec4(0, 0, 0, 0)
else:
# Camera rotation
in_uv_rot = vec2(
in_uv.x * math.cos(in_rot.z) + in_uv.y * math.sin(in_rot.z),
in_uv.y * math.cos(in_rot.z) - in_uv.x * math.sin(in_rot.z))
# Map transformation
c = math.sqrt(1.0 - d2)
lam = in_rot.x + math.atan2(
in_uv_rot.x,
c * math.cos(in_rot.y) - in_uv_rot.y * math.sin(in_rot.y))
phi = math.asin(c * math.sin(in_rot.y) +
in_uv_rot.y * math.cos(in_rot.y))
# Get coordinates of color on texture
uvCoord = vec2((lam / math.pi + 1.0) % 2.0 - 1.0, 2.0 * phi / math.pi)
texCoords = ivec2((uvCoord + vec2(1, -1)) * vec2(800, -400))
# Get normal in globe reference frame
norm = math.normalize(
vec3(
math.cos(phi) * math.cos(lam),
math.cos(phi) * math.sin(lam), math.sin(phi)))
# Set light direction
light = vec3(math.sin(in_rot.w), math.cos(in_rot.w), -.1 * in_rot.z)
# Get light intensity
intensity = norm @ math.normalize(light)
# Set ambient lighting
ambient = .1
# Check if in shadow
if intensity < 0.0:
shading = vec4(ambient, ambient, ambient, 1)
else:
intensity += ambient
shading = vec4(intensity, intensity, intensity, 1)
# Get texture color and apply shading
out_color = in_tex.read(texCoords).zyxw * shading # noqa
def compute_shader(
index_xyz: ("input", "GlobalInvocationId", ivec3),
data1: ("buffer", 0, Array(vec4)),
data2: ("buffer", 1, Array(vec4)),
data3: ("buffer", 2, Array(vec4)),
):
index = index_xyz.x
v = data1[index].x
mi = data1[index].y
ma = data1[index].z
data2[index] = vec4(min(v, ma), max(v, mi), clamp(v, mi, ma), 0.0)
data3[index] = vec4(nmin(v, ma), nmax(v, mi), nclamp(v, mi, ma), 0.0)
def fragment_shader(
tex: ("texture", 0, "2d i32"),
sampler: ("sampler", 1, ""),
tcoord: ("input", 0, vec2),
out_color: ("output", 0, vec4),
):
out_color = vec4(tex.sample(sampler, tcoord)) / 255.0 # noqa
def fragment_shader(
out_color: (pyshader.RES_OUTPUT, 0, vec4),
stdinfo: (pyshader.RES_UNIFORM, (0, 0), stdinfo_uniform_type),
material: (pyshader.RES_UNIFORM, (0, 1), LineStripMaterial.uniform_type),
):
out_color = vec4(material.color.rgb,
1.0) # noqa - shader assign to input arg
def compute_shader_tex_add(
index=("input", "GlobalInvocationId", ivec3),
tex1=("texture", 0, "2d rg16i"),
tex2=("texture", 1, "2d r32f"),
):
val = vec2(tex1.read(index.xy).xy) # ivec2 -> vec2
tex2.write(index.xy, vec4(val.x + val.y, 0.0, 0.0, 0.0))
def fragment_shader(
texcoord: ("input", 0, f32),
outcolor: ("output", 0, vec4),
tex: ("texture", (0, 1), "1d i32"),
sampler: ("sampler", (0, 2), ""),
):
outcolor = vec4(tex.sample(sampler, texcoord)) # noqa
def fragment_shader(
v_texcoord: ("input", 0, vec2),
s_sam: ("sampler", SAMPLER_BINDING, ""),
t_tex: ("texture", TEXTURE_BINDING, "2d i32"),
out_color: ("output", 0, vec4),
):
value = f32(t_tex.sample(s_sam, v_texcoord).r) / 255.0
out_color = vec4(value, value, value, 1.0) # noqa - shader output
def fragment_shader(
tex: ("texture", 0, "2d r32f"),
sampler: ("sampler", 1, ""),
tcoord: ("input", 0, vec2),
out_color: ("output", 0, vec4),
):
val = f32(tex.sample(sampler, tcoord).r)
out_color = vec4(val / 255.0, val / 255.0, 0.0, 1.0) # noqa
def fragment_shader(
texcoord: ("input", 0, vec3),
outcolor: ("output", 0, vec4),
tex: ("texture", (0, 1), "3d r16i"),
sampler: ("sampler", (0, 2), ""),
):
# outcolor = vec4(tex.sample(sampler, texcoord)) # noqa
outcolor = vec4(stdlib.sample(tex, sampler, texcoord)) # noqa
def compute_shader(
index_xyz: ("input", "GlobalInvocationId", ivec3),
data1: ("buffer", 0, Array(f32)),
data2: ("buffer", 1, Array(vec4)),
):
index = index_xyz.x
a = data1[index]
data2[index] = vec4(a**2, a**0.5, a**3.0, a**3.1)
def compute_shader(
index_xyz: ("input", "GlobalInvocationId", ivec3),
data1: ("buffer", 0, Array(f32)),
data2: ("buffer", 1, Array(vec4)),
):
index = index_xyz.x
a = data1[index]
data2[index] = vec4(a**0.5, math.sqrt(a), stdlib.sqrt(a), 0.0)
def vertex_shader(
index: (RES_INPUT, "VertexId", i32),
pos: (RES_OUTPUT, "Position", vec4),
color: (RES_OUTPUT, 0, vec3),
):
positions = [vec2(+0.0, -0.5), vec2(+0.5, +0.5), vec2(-0.5, +0.7)]
p = positions[index]
pos = vec4(p, 0.0, 1.0) # noqa
color = vec3(p, 0.5) # noqa
def vertex_shader(
index=("input", "VertexId", i32),
out_pos=("output", "Position", vec4),
out_color=("output", 0, vec3),
):
positions = [vec2(+0.0, -0.5), vec2(+0.5, +0.5), vec2(-0.5, +0.7)]
p = positions[index]
out_pos = vec4(p, 0.0, 1.0) # noqa
out_color = vec3(p, 0.5) # noqa
def fragment_shader_textured_rgba(
v_texcoord: (pyshader.RES_INPUT, 0, vec2),
u_mesh: (pyshader.RES_UNIFORM, (1, 0), MeshBasicMaterial.uniform_type),
s_sam: (pyshader.RES_SAMPLER, (1, 1), ""),
t_tex: (pyshader.RES_TEXTURE, (1, 2), "2d i32"),
out_color: (pyshader.RES_OUTPUT, 0, vec4),
):
color = vec4(t_tex.sample(s_sam, v_texcoord))
color = (color - u_mesh.clim[0]) / (u_mesh.clim[1] - u_mesh.clim[0])
out_color = color # noqa - shader output
def compute_shader(
index_xyz: ("input", "GlobalInvocationId", ivec3),
data1: ("buffer", 0, Array(vec4)),
data2: ("buffer", 1, Array(vec4)),
):
index = index_xyz.x
v = data1[index]
v1 = mix(v.x, v.y, v.z)
v2 = mix(vec2(v.x, v.x), vec2(v.y, v.y), v.z)
data2[index] = vec4(v1, v2.x, v2.y, 0.0)
def vertex_shader(
in_pos: ("input", 0, vec4),
in_texcoord: ("input", 1, vec2),
out_pos: ("output", "Position", vec4),
v_texcoord: ("output", 0, vec2),
u_locals: ("uniform", UNIFORM_BINDING, uniform_type),
):
ndc = u_locals.transform * in_pos
out_pos = vec4(ndc.xy, 0, 1) # noqa - shader output
v_texcoord = in_texcoord # noqa - shader output
def vertex_shader2(
index: (RES_INPUT, "VertexId", i32),
pos: (RES_OUTPUT, "Position", vec4),
):
positions = [
vec3(-0.5, -0.5, 0.0),
vec3(-0.5, +0.5, 0.0),
vec3(+0.5, -0.5, 0.2),
vec3(+0.5, +0.5, 0.2),
]
pos = vec4(positions[index], 1.0) # noqa
def vertex_shader(
# io
in_pos: (pyshader.RES_INPUT, 0, vec4),
out_pos: (pyshader.RES_OUTPUT, "Position", vec4),
stdinfo: (pyshader.RES_UNIFORM, (0, 0), stdinfo_uniform_type),
# resources
):
world_pos = stdinfo.world_transform * vec4(in_pos.xyz, 1.0)
ndc_pos = stdinfo.projection_transform * stdinfo.cam_transform * world_pos
out_pos = ndc_pos # noqa - shader assign to input arg
def fragment_shader_textured_gray(
v_texcoord: (pyshader.RES_INPUT, 0, vec3),
u_mesh: (pyshader.RES_UNIFORM, (1, 0),
MeshVolumeSliceMaterial.uniform_type),
s_sam: (pyshader.RES_SAMPLER, (1, 1), ""),
t_tex: (pyshader.RES_TEXTURE, (1, 2), "3d i32"),
out_color: (pyshader.RES_OUTPUT, 0, vec4),
):
val = f32(t_tex.sample(s_sam, v_texcoord).r)
val = (val - u_mesh.clim[0]) / (u_mesh.clim[1] - u_mesh.clim[0])
out_color = vec4(val, val, val, 1.0) # noqa - shader output
def vertex_shader(
in_pos: (pyshader.RES_INPUT, 0, vec4),
in_texcoord: (pyshader.RES_INPUT, 1, vec2),
out_pos: (pyshader.RES_OUTPUT, "Position", vec4),
v_texcoord: (pyshader.RES_OUTPUT, 0, vec2),
u_stdinfo: (pyshader.RES_UNIFORM, (0, 0), stdinfo_uniform_type),
):
world_pos = u_stdinfo.world_transform * vec4(in_pos.xyz, 1.0)
ndc_pos = u_stdinfo.projection_transform * u_stdinfo.cam_transform * world_pos
out_pos = ndc_pos # noqa - shader output
v_texcoord = in_texcoord # noqa - shader output
def vertex_shader(
index: (RES_INPUT, "VertexId", i32),
pos: (RES_OUTPUT, "Position", vec4),
pointsize: (RES_OUTPUT, "PointSize", f32),
):
positions = [
vec2(-0.5, -0.5),
vec2(-0.5, +0.5),
vec2(+0.5, -0.5),
vec2(+0.5, +0.5),
]
p = positions[index]
pos = vec4(p, 0.0, 1.0) # noqa
pointsize = 16.0 # noqa
def vertex_shader(
index: ("input", "VertexId", i32),
pos: ("output", "Position", vec4),
tcoord: ("output", 0, vec2),
):
positions = [
vec2(-0.5, -0.5),
vec2(-0.5, +0.5),
vec2(+0.5, -0.5),
vec2(+0.5, +0.5),
]
p = positions[index]
pos = vec4(p, 0.0, 1.0) # noqa
tcoord = vec2(p + 0.5) # noqa - map to 0..1
def vertex_shader(
in_pos: ("input", 0, vec4),
u_stdinfo: ("uniform", (0, 0), stdinfo_uniform_type),
u_points: ("uniform", (1, 0), PointsMaterial.uniform_type),
out_pos: ("output", "Position", vec4),
out_point_size: ("output", "PointSize", f32),
out_size: ("output", 0, f32),
):
world_pos = u_stdinfo.world_transform * vec4(in_pos.xyz, 1.0)
ndc_pos = u_stdinfo.projection_transform * u_stdinfo.cam_transform * world_pos
scale_factor = u_stdinfo.physical_size.x / u_stdinfo.logical_size.x
size = u_points.size * scale_factor + 1.5 # plus some for aa
out_pos = ndc_pos # noqa - shader output
out_point_size = size # noqa - shader output
out_size = size # noqa - shader output
def fragment_shader_gaussian(
in_size: ("input", 0, f32),
in_point_coord: ("input", "PointCoord", vec2),
u_points: ("uniform", (1, 0), PointsMaterial.uniform_type),
out_color: ("output", 0, vec4),
):
color = u_points.color
pcoord_pixels = in_point_coord * in_size
hsize = 0.5 * (in_size - 1.5)
sigma = hsize / 3.0
d = distance(pcoord_pixels, vec2(hsize, hsize))
if d <= hsize:
t = d / sigma
a = exp(-0.5 * t * t)
out_color = vec4(color.rgb, color.a * a) # noqa - shader output
else:
return # discard
def vertex_shader(
index: (RES_INPUT, "VertexId", i32), # noqa
pos: (RES_OUTPUT, "Position", vec4), # noqa
uv: (RES_OUTPUT, 0, vec2),
):
# 6 vertices. TODO: Update with uniform to keep ratio
positions = [
vec2(1, 1),
vec2(-1, 1),
vec2(-1, -1),
vec2(1, 1),
vec2(1, -1),
vec2(-1, -1)
]
p = positions[index]
pos = vec4(p, 0.0, 1.0) # noqa
uv = p # noqa
def fragment_shader_points(
in_size: ("input", 0, f32),
in_point_coord: ("input", "PointCoord", vec2),
u_points: ("uniform", (1, 0), PointsMaterial.uniform_type),
out_color: ("output", 0, vec4),
):
# See https://github.com/vispy/vispy/blob/master/vispy/visuals/markers.py
color = u_points.color
pcoord_pixels = in_point_coord * in_size
hsize = 0.5 * (in_size - 1.5)
aa_width = 1.0
d = distance(pcoord_pixels, vec2(hsize, hsize))
if d <= hsize - 0.5 * aa_width:
out_color = u_points.color.rgba # noqa - shader output
elif d <= hsize + 0.5 * aa_width:
alpha = 0.5 + (hsize - d) / aa_width
alpha = alpha ** 2 # this works better
out_color = vec4(color.rgb, color.a * alpha) # noqa - shader output
else:
return # discard
def fragment_shader(
out_color: (RES_OUTPUT, 0, vec4),
):
out_color = vec4(1.0, 0.499, 0.0, 1.0) # noqa
def vertex_shader(
pos_in: (RES_INPUT, 0, vec2),
pos: (RES_OUTPUT, "Position", vec4),
):
pos = vec4(pos_in, 0.0, 1.0) # noqa
def compute_shader(
index: ("input", "GlobalInvocationId", ivec3),
data2: ("buffer", 1, Array(vec4)),
):
data2[index.x] = vec4(7.0, 3, ivec2(False, 2.7))
