Merge branch 'blender2.8' into hair_guides

1 files changed, 35 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..f660cae8d12
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_2D_widget_base_frag.glsl
@@ -0,0 +1,35 @@
+uniform vec3 checkerColorAndSize;
+
+noperspective in vec4 finalColor;
+noperspective in float butCo;
+
+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()
+{
+	fragColor = finalColor;
+
+	if (butCo > 0.5) {
+		vec4 checker = do_checkerboard();
+		fragColor = mix(checker, fragColor, fragColor.a);
+	}
+
+	if (butCo > 0.0) {
+		fragColor.a = 1.0;
+	}
+}
\ No newline at end of file