diff options
Diffstat (limited to 'src/effects/shaders_ng/displace.frag')
-rw-r--r-- | src/effects/shaders_ng/displace.frag | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/src/effects/shaders_ng/displace.frag b/src/effects/shaders_ng/displace.frag deleted file mode 100644 index df6bc78..0000000 --- a/src/effects/shaders_ng/displace.frag +++ /dev/null @@ -1,39 +0,0 @@ -#version 440 - -layout(location = 0) in vec2 qt_TexCoord0; -layout(location = 0) out vec4 fragColor; - -layout(std140, binding = 0) uniform buf { - // qt_Matrix and qt_Opacity must always be both present - // if the built-in vertex shader is used. - mat4 qt_Matrix; - float qt_Opacity; - float displacement; - float xPixel; - float yPixel; -}; - -layout(binding = 1) uniform sampler2D source; -layout(binding = 2) uniform sampler2D displacementSource; - -float linearstep(float e0, float e1, float x) -{ - return clamp((x - e0) / (e1 - e0), 0.0, 1.0); -} - -void main() -{ - vec4 offset = texture(displacementSource, qt_TexCoord0); - offset.xy -= vec2(0.5, 0.5); - offset.xy = offset.xy * step(vec2(1.0/256.0), abs(offset.xy)); - vec2 tx = qt_TexCoord0 + (vec2(-offset.x, offset.y) * displacement); - - float e1 = linearstep(0.0, xPixel, tx.x); - float e2 = linearstep(0.0, yPixel, tx.y); - float e3 = 1.0 - linearstep(1.0, 1.0 + xPixel, tx.x); - float e4 = 1.0 - linearstep(1.0, 1.0 + yPixel, tx.y); - - vec4 samp = texture(source, tx); - samp.rgb *= e1 * e2 * e3 * e4; - fragColor = samp * qt_Opacity * offset.a; -} |