1 files changed, 22 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_2D_line_dashed_legacy_vert.glsl b/source/blender/gpu/shaders/gpu_shader_2D_line_dashed_legacy_vert.glsl
new file mode 100644
index 00000000000..82f88bfcd56
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_2D_line_dashed_legacy_vert.glsl
@@ -0,0 +1,22 @@
+
+// Draw dashed lines, perforated in screen space.
+// Based on a (3D) version by Mike Erwin.
+
+uniform mat4 ModelViewProjectionMatrix;
+uniform vec2 viewport_size;
+
+#if __VERSION__ == 120
+  attribute vec2 pos;
+  noperspective varying float distance_along_line;
+#else
+  in vec2 pos;
+  noperspective out float distance_along_line;
+#endif
+
+void main()
+{
+	gl_Position = ModelViewProjectionMatrix * vec4(pos, 0.0, 1.0);
+
+	/* Hack - prevent stupid GLSL compiler to optimize out unused viewport_size uniform, which gives crash! */
+	distance_along_line = viewport_size.x * 0.000001f - viewport_size.x * 0.0000009f;
+}