diff options
Diffstat (limited to 'source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl')
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl b/source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl new file mode 100644 index 00000000000..a356014d025 --- /dev/null +++ b/source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl @@ -0,0 +1,40 @@ +uniform vec3 checkerColorAndSize; + +noperspective in vec4 finalColor; +noperspective in float butCo; +flat in float discardFac; + +out vec4 fragColor; + +vec4 do_checkerboard() +{ + float size = checkerColorAndSize.z; + vec2 phase = mod(gl_FragCoord.xy, size * 2.0); + + if ((phase.x > size && phase.y < size) || + (phase.x < size && phase.y > size)) + { + return vec4(checkerColorAndSize.xxx, 1.0); + } + else { + return vec4(checkerColorAndSize.yyy, 1.0); + } +} + +void main() +{ + if (min(1.0, -butCo) > discardFac) { + discard; + } + + fragColor = finalColor; + + if (butCo > 0.5) { + vec4 checker = do_checkerboard(); + fragColor = mix(checker, fragColor, fragColor.a); + } + + if (butCo > 0.0) { + fragColor.a = 1.0; + } +} |