| author | František Kučera <franta-hg@frantovo.cz> |
| Tue, 05 Dec 2023 22:55:25 +0100 | |
| branch | v_0 |
| changeset 20 | 0899e966993e |
| parent 18 | c4384f43c739 |
| child 28 | 4cbd9c0beb4c |
| permissions | -rw-r--r-- |
| 0 | 1 |
#version 330 core |
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3faef2f5128e
better GLSL variable names
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
changeset
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uniform sampler2D uTexture; |
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3faef2f5128e
better GLSL variable names
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
changeset
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in vec2 vTextureXY; |
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ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
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out vec4 fColor; |
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ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
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vec4 grayscale(vec4 original) {
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9aba96f0b001
fragment shader: add grayscale() function
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
changeset
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const vec3 luminanceWeighting = vec3(0.2125, 0.7154, 0.0721); |
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ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
|
9 |
float luminance = dot(original.rgb, luminanceWeighting); |
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ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
|
10 |
return vec4(vec3(luminance), original.a); |
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9aba96f0b001
fragment shader: add grayscale() function
František Kučera <franta-hg@frantovo.cz>
parents:
2
diff
changeset
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} |
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9aba96f0b001
fragment shader: add grayscale() function
František Kučera <franta-hg@frantovo.cz>
parents:
2
diff
changeset
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c4384f43c739
new shader: phosphor-basic.frag
František Kučera <franta-hg@frantovo.cz>
parents:
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diff
changeset
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void main() {
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ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
|
14 |
fColor = texture(uTexture, vTextureXY).rgba; |
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4
9aba96f0b001
fragment shader: add grayscale() function
František Kučera <franta-hg@frantovo.cz>
parents:
2
diff
changeset
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15 |
// fColor = grayscale(fColor); |
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14
ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
|
16 |
// fColor *= vec4(0.8, 1., 0.2, 1.); |
|
ceeb36fad818
transparency/alpha: simple binary transparent/opaque, no blending, just discard some fragments
František Kučera <franta-hg@frantovo.cz>
parents:
11
diff
changeset
|
17 |
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15
1eb7cfefbeea
transparency/alpha: blending
František Kučera <franta-hg@frantovo.cz>
parents:
14
diff
changeset
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// if (fColor.a < 0.1) discard; |
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0899e966993e
process all X11 event waiting in the queue in the same cycle
František Kučera <franta-hg@frantovo.cz>
parents:
18
diff
changeset
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// Pretty, pretty, pretty, pretty, Peggy Sue |
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} |