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Automatic shader inputs.

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This commit is contained in:
Roz K 2022-12-31 15:22:30 +01:00
parent 09dcaae95b
commit 9fff666ebf
Signed by: roz
GPG Key ID: 51FBF4E483E1C822
4 changed files with 73 additions and 79 deletions
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18
game/camera.py
View File

@ -13,14 +13,7 @@
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from engine import vec3_origin, mat4, mat4_projection, mat4_orbit, resolve_input, set_input_mat4
class _Inputs:
__slots__ = 'projection', 'view'
def __init__(self, shader, projection, view):
self.projection = resolve_input(shader, projection)
self.view = resolve_input(shader, view)
from engine import vec3_origin, mat4, mat4_projection, mat4_orbit, set_input_mat4
class Camera:
__slots__ = 'yaw', 'pitch', 'distance', 'projection', 'view'
@ -44,9 +37,6 @@ class Camera:
def to_km(self):
mat4_orbit(self.view, vec3_origin, self.yaw, self.pitch, self.distance * 0.001)
def resolve_inputs(self, shader, projection = b'u_projection', view = b'u_view'):
return _Inputs(shader, projection, view)
def update_inputs(self, inputs):
set_input_mat4(inputs.projection, self.projection)
set_input_mat4(inputs.view, self.view)
def set_inputs(self, shader):
set_input_mat4(shader.u_projection, self.projection)
set_input_mat4(shader.u_view, self.view)

27
game/environment.py
View File

@ -14,7 +14,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from math import radians, cos
from engine import vec3, mat4_mul_vec3, resolve_input, set_input_vec3
from engine import vec3, mat4_mul_vec3, set_input_vec3
from game.math import vec3_up, vec3_add, vec3_sub, vec3_scale, vec3_mul, vec3_dot
def _angles(start, end):
@ -62,16 +62,6 @@ def _resolve_color(ranges, c):
w, (a, b) = _resolve(ranges, c)
return vec3_add(a, vec3_scale(b, w))
class _Inputs:
__slots__ = 'light_direction', 'light_color', 'horizon_color', 'sky_color', 'sun_color'
def __init__(self, shader):
self.light_direction = resolve_input(shader, b'u_light_direction')
self.light_color = resolve_input(shader, b'u_light_color')
self.horizon_color = resolve_input(shader, b'u_horizon_color')
self.sky_color = resolve_input(shader, b'u_sky_color')
self.sun_color = resolve_input(shader, b'u_sun_color')
class Environment:
__slots__ = 'light_direction', 'light_color', 'horizon_color', 'sky_color', 'sun_color'
@ -91,12 +81,9 @@ class Environment:
self.sky_color.set(*vec3_scale(_resolve_color(_sky_color, c), light_power))
self.sun_color.set(*_resolve_color(_sun_color, c))
def resolve_inputs(self, shader):
return _Inputs(shader)
def update_inputs(self, inputs):
set_input_vec3(inputs.light_direction, self.light_direction)
set_input_vec3(inputs.light_color, self.light_color)
set_input_vec3(inputs.horizon_color, self.horizon_color)
set_input_vec3(inputs.sky_color, self.sky_color)
set_input_vec3(inputs.sun_color, self.sun_color)
def set_inputs(self, shader):
set_input_vec3(shader.u_light_direction, self.light_direction)
set_input_vec3(shader.u_light_color, self.light_color)
set_input_vec3(shader.u_horizon_color, self.horizon_color)
set_input_vec3(shader.u_sky_color, self.sky_color)
set_input_vec3(shader.u_sun_color, self.sun_color)

48
game/game.py
View File

@ -20,9 +20,9 @@ from ctypes import Structure
from engine import *
from game import math
from game import shader
from game import triangles
from game import sea
from game.shader import Shader
from game.generator import Generator
from game.resources import RuntimeArchive
from game.batch import Batch
@ -53,9 +53,9 @@ def main():
mouse = Mouse(events, wheel = 60, wheel_min = 20)
keyboard = Keyboard(events)
render_initialize(__debug__)
terrain_shader = shader.load('terrain', 'common')
tests_shader = shader.load('tests', 'common')
sky_shader = shader.load('sky')
terrain_shader = Shader('terrain', 'common')
tests_shader = Shader('tests', 'common')
sky_shader = Shader('sky')
heightmap = create_texture(
TEXTURE_FORMAT_FLOAT_32, 256, 256, 0, TEXTURE_FLAG_MIN_LINEAR | TEXTURE_FLAG_MAG_LINEAR,
@ -127,21 +127,13 @@ def main():
cube_id = cube_model.spawn(tests_batch, cube_spawn_translation, mat3_identity)
clouds_id = clouds_model.spawn(tests_batch, vec3(0.0, 0.0, 32.0), mat3_identity)
sea_phase = resolve_input(sky_shader, b'u_sea_phase')
sea_polar_textures = sea.load_polar_textures(('data/sea_bump1.png', 'data/sea_bump2.png'))
sea_detail_texture = sea.load_detail_texture('data/sea_bump.png')
sky_triangles = create_triangles(triangles.sky_triangles(64, proj_far_z - 0.1, proj_ratio))
camera = Camera()
camera.set_projection(proj_hfov, proj_ratio, proj_near_z, proj_far_z)
terrain_camera_inputs = camera.resolve_inputs(terrain_shader)
tests_camera_inputs = camera.resolve_inputs(tests_shader)
sky_camera_inputs = camera.resolve_inputs(sky_shader)
environment = Environment()
terrain_environment_inputs = environment.resolve_inputs(terrain_shader)
tests_environment_inputs = environment.resolve_inputs(tests_shader)
sky_environment_inputs = environment.resolve_inputs(sky_shader)
blob_translation = tests_batch.translation[blob_id]
cube_translation = tests_batch.translation[cube_id]
@ -176,9 +168,9 @@ def main():
camera.set_view(camera_yaw, camera_pitch, camera_distance)
environment.from_sun(camera.view, sun_direction, sun_power)
select_shader(terrain_shader)
camera.update_inputs(terrain_camera_inputs)
environment.update_inputs(terrain_environment_inputs)
terrain_shader.select()
camera.set_inputs(terrain_shader)
environment.set_inputs(terrain_shader)
select_texture(0, tiles_texture)
select_texture(1, heightmap)
select_texture(2, normalmap)
@ -188,7 +180,7 @@ def main():
unselect_texture(0, tiles_texture)
unselect_texture(1, heightmap)
unselect_texture(2, normalmap)
unselect_shader(terrain_shader)
terrain_shader.unselect()
rotation = mat3()
mat3_rotation(rotation, vec3_up, (current_time * 0.21) % tau)
@ -197,9 +189,9 @@ def main():
mat3_rotation(cube_orientation, vec3_up, (current_time * 0.43) % tau)
mat3_rotation(clouds_orientation, vec3_up, (current_time * -0.037) % tau)
select_shader(tests_shader)
camera.update_inputs(tests_camera_inputs)
environment.update_inputs(tests_environment_inputs)
tests_shader.select()
camera.set_inputs(tests_shader)
environment.set_inputs(tests_shader)
select_texture(0, tests_texture)
select_texture(1, heightmap)
select_texture(2, normalmap)
@ -207,20 +199,20 @@ def main():
unselect_texture(0, tests_texture)
unselect_texture(1, heightmap)
unselect_texture(2, normalmap)
unselect_shader(tests_shader)
tests_shader.unselect()
camera.to_km()
select_shader(sky_shader)
camera.update_inputs(sky_camera_inputs)
environment.update_inputs(sky_environment_inputs)
set_input_float(sea_phase, (current_time * 0.023) % 1.0)
sky_shader.select()
camera.set_inputs(sky_shader)
environment.set_inputs(sky_shader)
set_input_float(sky_shader.u_sea_phase, (current_time * 0.023) % 1.0)
select_texture(0, sea_polar_textures)
select_texture(1, sea_detail_texture)
draw_triangles(sky_triangles)
unselect_texture(0, sea_polar_textures)
unselect_texture(1, sea_detail_texture)
unselect_shader(sky_shader)
sky_shader.unselect()
frame_end = time.thread_time()
end_frame()
@ -272,9 +264,9 @@ def main():
destroy_texture(normalmap)
destroy_triangles(sky_triangles)
archive.destroy()
destroy_shader(terrain_shader)
destroy_shader(tests_shader)
destroy_shader(sky_shader)
del terrain_shader
del tests_shader
del sky_shader
render_terminate()
del events
destroy_display(display)

59
game/shader.py
View File

@ -15,9 +15,7 @@
from pathlib import Path
from engine import load_shader
#TODO: preprocessing (at least includes)
from engine import load_shader, resolve_input, select_shader, unselect_shader, destroy_shader
def _cleanup(line):
return line.partition('//')[0].strip()
@ -34,9 +32,9 @@ def _subst(line):
return lines
return [line]
def _load_source(_path):
assert _path.exists()
lines = filter(_filter, map(_cleanup, open(_path, 'rt')))
def _load_source(path):
assert path.exists()
lines = filter(_filter, map(_cleanup, open(path, 'rt')))
source = []
for line in lines:
source.extend(_subst(line))
@ -45,14 +43,41 @@ def _load_source(_path):
def _convert(line):
return bytes(line, 'utf-8') + b'\n'
def load(vert_name, frag_name = ''):
path = Path('.') / 'game' / 'shaders'
if not frag_name:
frag_name = vert_name
print("Loading vertex shader", vert_name)
vert_lines = list(map(_convert, _load_source(path / (vert_name + '_opengles.vert'))))
assert vert_lines
print("Loading fragment shader", frag_name)
frag_lines = list(map(_convert, _load_source(path / (frag_name + '_opengles.frag'))))
assert frag_lines
return load_shader(vert_lines, frag_lines)
def _parse(shader, vert_lines, frag_lines):
uniforms = []
for line in vert_lines:
if line.startswith('uniform '):
uniforms.append(line.split()[-1].strip(';'))
for line in frag_lines:
if line.startswith('uniform '):
name = line.split()[-1].strip(';')
if name not in uniforms:
uniforms.append(name)
for name in uniforms:
setattr(shader, name, resolve_input(shader._shader, bytes(name, 'utf-8')))
class Shader:
__slots__ = '_shader', '__dict__'
def __init__(self, vert_name, frag_name = ''):
path = Path('.') / 'game' / 'shaders'
assert path.exists()
if not frag_name:
frag_name = vert_name
print("Loading vertex shader", vert_name)
vert_lines = _load_source(path / (vert_name + '_opengles.vert'))
assert vert_lines
print("Loading fragment shader", frag_name)
frag_lines = _load_source(path / (frag_name + '_opengles.frag'))
assert frag_lines
self._shader = load_shader(list(map(_convert, vert_lines)), list(map(_convert, frag_lines)))
_parse(self, vert_lines, frag_lines)
def __del__(self):
destroy_shader(self._shader)
def select(self):
select_shader(self._shader)
def unselect(self):
unselect_shader(self._shader)