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Document how to use screen space textures using uniform hints

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clayjohn
2023-01-05 13:35:13 -08:00
parent 16eacf62c8
commit 8bf41b6ef1
6 changed files with 145 additions and 88 deletions
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4
tutorials/shaders/shaders_style_guide.rst
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@@ -36,8 +36,10 @@ Here is a complete shader example based on these guidelines:
uniform float contrast = 1.5;
uniform float saturation = 1.8;
uniform sampler2D screen_texture : hint_screen_texture, repeat_disabled, filter_nearest;
void fragment() {
vec3 c = textureLod(SCREEN_TEXTURE, SCREEN_UV, 0.0).rgb;
vec3 c = textureLod(screen_texture, SCREEN_UV, 0.0).rgb;
c.rgb = mix(vec3(0.0), c.rgb, brightness);
c.rgb = mix(vec3(0.5), c.rgb, contrast);