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Add chromatic aberration post-effect

This commit is contained in:
Nguyễn Gia Phong 2019-05-23 16:04:40 +07:00
parent 491a6779f1
commit c7a280191d
2 changed files with 24 additions and 8 deletions
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13
axuy/shaders/comb.frag
View File

@ -1,12 +1,23 @@
#version 330
uniform float invfov;
uniform sampler2D la;
uniform sampler2D tex;
in vec2 in_text;
out vec4 f_color;
vec2 fringe(vec2 vert, float delta)
{
return vec2(pow(abs(vert.x), 1.0 + delta) * sign(vert.x),
pow(abs(vert.y), 1.0 + delta) * sign(vert.y)) * 0.5 + 0.5;
}
void main(void)
{
f_color = texture(la, in_text) * 0.42 + texture(tex, in_text);
vec2 vert = in_text * 2.0 - 1.0;
f_color = texture(la, in_text) * 0.42 + vec4(
texture(tex, fringe(vert, -invfov)).r,
texture(tex, fringe(vert, invfov)).g,
texture(tex, in_text).b, 1.0);
}

19
axuy/view.py
View File

@ -34,6 +34,7 @@ from .misc import COLOR_NAMES, abspath, color, neighbors, sign
FOV_MIN = 30
FOV_MAX = 120
FOV_INIT = (FOV_MIN+FOV_MAX) / 2
CONWAY = 1.303577269034
MOUSE_SPEED = 1/8
QUAD = np.float32([-1, -1, 1, -1, -1, 1, -1, 1, 1, -1, 1, 1]).tobytes()
@ -126,6 +127,9 @@ class View:
Processed executable code in GLSL for Gaussian blur.
gausshva, gaussvva : moderngl.VertexArray
Vertex data for Gaussian blur.
fringe : moderngl.Program
Processed executable code in GLSL for final combination
of the bloom effect with additional chromatic aberration.
combine : moderngl.VertexArray
Vertex data for final combination of the bloom effect.
fb, ping, pong : moderngl.Framebuffer
@ -213,12 +217,12 @@ class View:
self.gaussv['height'].value = 256 * height / width
self.gaussvva = context.simple_vertex_array(
self.gaussv, context.buffer(QUAD), 'in_vert')
combine = context.program(vertex_shader=TEX_VERTEX,
fragment_shader=COMBINE_FRAGMENT)
combine['la'].value = 0
combine['tex'].value = 1
self.fringe = context.program(vertex_shader=TEX_VERTEX,
fragment_shader=COMBINE_FRAGMENT)
self.fringe['la'].value = 0
self.fringe['tex'].value = 1
self.combine = context.simple_vertex_array(
combine, context.buffer(QUAD), 'in_vert')
self.fringe, context.buffer(QUAD), 'in_vert')
size, table = (width, height), (256, height * 256 // width)
self.fb = context.framebuffer(context.texture(size, 4),
@ -349,13 +353,13 @@ class View:
vp = (view @ projection).astype(np.float32).tobytes()
# Render map
self.maprog['visibility'].write(visibility.tobytes())
self.maprog['visibility'].value = visibility
self.maprog['camera'].write(self.pos.tobytes())
self.maprog['mvp'].write(vp)
self.mapva.render(moderngl.TRIANGLES)
# Render picos and shards
self.prog['visibility'].write(visibility.tobytes())
self.prog['visibility'].value = visibility
self.prog['camera'].write(self.pos.tobytes())
self.prog['vp'].write(vp)
@ -406,6 +410,7 @@ class View:
self.context.screen.use()
self.context.clear()
self.fringe['invfov'].value = 1.0 / self.fov**CONWAY
self.combine.render(moderngl.TRIANGLES)
glfw.swap_buffers(self.window)