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Fix texture mapping in Custom post-processing (#3957)

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When the viewport is not fullscreen, the view is cropped and distorted after applying a shader.
This is due to using SCREEN_UV (meant for SCREEN_TEXTURE) instead of UV (meant for TEXTURE).
This commit is contained in:
Beuc
2020-09-03 00:15:01 +02:00
committed by GitHub
parent e37ee4239c
commit f648f7bc09
1 changed files with 27 additions and 27 deletions
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tutorials/viewports/custom_postprocessing.rst
+27 -27
View File
@@ -77,15 +77,15 @@ Copy the following code to your shader. The above code is a single pass edge det
shader_type canvas_item;
void fragment() {
vec3 col = -8.0 * texture(TEXTURE, SCREEN_UV).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, -SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE.x, 0.0)).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(-SCREEN_PIXEL_SIZE.x, 0.0)).xyz;
col += texture(TEXTURE, SCREEN_UV + SCREEN_PIXEL_SIZE.xy).xyz;
col += texture(TEXTURE, SCREEN_UV - SCREEN_PIXEL_SIZE.xy).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(-SCREEN_PIXEL_SIZE.x, SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE.x, -SCREEN_PIXEL_SIZE.y)).xyz;
vec3 col = -8.0 * texture(TEXTURE, UV).xyz;
col += texture(TEXTURE, UV + vec2(0.0, SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, UV + vec2(0.0, -SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, UV + vec2(SCREEN_PIXEL_SIZE.x, 0.0)).xyz;
col += texture(TEXTURE, UV + vec2(-SCREEN_PIXEL_SIZE.x, 0.0)).xyz;
col += texture(TEXTURE, UV + SCREEN_PIXEL_SIZE.xy).xyz;
col += texture(TEXTURE, UV - SCREEN_PIXEL_SIZE.xy).xyz;
col += texture(TEXTURE, UV + vec2(-SCREEN_PIXEL_SIZE.x, SCREEN_PIXEL_SIZE.y)).xyz;
col += texture(TEXTURE, UV + vec2(SCREEN_PIXEL_SIZE.x, -SCREEN_PIXEL_SIZE.y)).xyz;
COLOR.xyz = col;
}
@@ -135,15 +135,15 @@ does not matter:
// Blurs the screen in the X-direction.
void fragment() {
vec3 col = texture(TEXTURE, SCREEN_UV).xyz * 0.16;
col += texture(TEXTURE, SCREEN_UV + vec2(SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.15;
col += texture(TEXTURE, SCREEN_UV + vec2(-SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.15;
col += texture(TEXTURE, SCREEN_UV + vec2(2.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.12;
col += texture(TEXTURE, SCREEN_UV + vec2(2.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.12;
col += texture(TEXTURE, SCREEN_UV + vec2(3.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.09;
col += texture(TEXTURE, SCREEN_UV + vec2(3.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.09;
col += texture(TEXTURE, SCREEN_UV + vec2(4.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.05;
col += texture(TEXTURE, SCREEN_UV + vec2(4.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.05;
vec3 col = texture(TEXTURE, UV).xyz * 0.16;
col += texture(TEXTURE, UV + vec2(SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.15;
col += texture(TEXTURE, UV + vec2(-SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.15;
col += texture(TEXTURE, UV + vec2(2.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.12;
col += texture(TEXTURE, UV + vec2(2.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.12;
col += texture(TEXTURE, UV + vec2(3.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.09;
col += texture(TEXTURE, UV + vec2(3.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.09;
col += texture(TEXTURE, UV + vec2(4.0 * SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.05;
col += texture(TEXTURE, UV + vec2(4.0 * -SCREEN_PIXEL_SIZE.x, 0.0)).xyz * 0.05;
COLOR.xyz = col;
}
@@ -153,15 +153,15 @@ does not matter:
// Blurs the screen in the Y-direction.
void fragment() {
vec3 col = texture(TEXTURE, SCREEN_UV).xyz * 0.16;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, SCREEN_PIXEL_SIZE.y)).xyz * 0.15;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, -SCREEN_PIXEL_SIZE.y)).xyz * 0.15;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 2.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.12;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 2.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.12;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 3.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.09;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 3.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.09;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 4.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.05;
col += texture(TEXTURE, SCREEN_UV + vec2(0.0, 4.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.05;
vec3 col = texture(TEXTURE, UV).xyz * 0.16;
col += texture(TEXTURE, UV + vec2(0.0, SCREEN_PIXEL_SIZE.y)).xyz * 0.15;
col += texture(TEXTURE, UV + vec2(0.0, -SCREEN_PIXEL_SIZE.y)).xyz * 0.15;
col += texture(TEXTURE, UV + vec2(0.0, 2.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.12;
col += texture(TEXTURE, UV + vec2(0.0, 2.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.12;
col += texture(TEXTURE, UV + vec2(0.0, 3.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.09;
col += texture(TEXTURE, UV + vec2(0.0, 3.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.09;
col += texture(TEXTURE, UV + vec2(0.0, 4.0 * SCREEN_PIXEL_SIZE.y)).xyz * 0.05;
col += texture(TEXTURE, UV + vec2(0.0, 4.0 * -SCREEN_PIXEL_SIZE.y)).xyz * 0.05;
COLOR.xyz = col;
}