From 409b3c9c9c6cff97258f7ab6f6cb48ab0cc00b7c Mon Sep 17 00:00:00 2001 From: Sergey Sharybin Date: Tue, 7 Oct 2014 15:48:39 +0200 Subject: Fix T42106: Box image mapping shows black triangles if they point to a corner and blend is 0 After discussion with cambo here we decided it's better to choose arbitrary side of the box (in this case it's X-axis) and use image from it. That's better than doing a blackness. P.S. This is literally a corner case anyway. --- intern/cycles/kernel/svm/svm_image.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'intern/cycles/kernel/svm') diff --git a/intern/cycles/kernel/svm/svm_image.h b/intern/cycles/kernel/svm/svm_image.h index a7abeda18e5..8a256c9bda5 100644 --- a/intern/cycles/kernel/svm/svm_image.h +++ b/intern/cycles/kernel/svm/svm_image.h @@ -435,6 +435,10 @@ ccl_device void svm_node_tex_image_box(KernelGlobals *kg, ShaderData *sd, float weight.z = ((2.0f - limit)*N.z + (limit - 1.0f))/(2.0f*limit - 1.0f); } } + else { + /* Desperate mode, no valid choice anyway, fallback to one side.*/ + weight.x = 1.0f; + } /* now fetch textures */ uint co_offset, out_offset, alpha_offset, srgb; -- cgit v1.2.3