From 8bfa48384d3604cfc5fd265e89bf86f129242542 Mon Sep 17 00:00:00 2001 From: Brecht Van Lommel Date: Sun, 8 Jan 2012 14:55:43 +0000 Subject: Cycles: checker texture node, patch by Thomas. --- intern/cycles/kernel/svm/svm_checker.h | 57 ++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 intern/cycles/kernel/svm/svm_checker.h (limited to 'intern/cycles/kernel/svm/svm_checker.h') diff --git a/intern/cycles/kernel/svm/svm_checker.h b/intern/cycles/kernel/svm/svm_checker.h new file mode 100644 index 00000000000..8dda5e3052b --- /dev/null +++ b/intern/cycles/kernel/svm/svm_checker.h @@ -0,0 +1,57 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +CCL_NAMESPACE_BEGIN + +/* Checker */ + +__device_noinline float svm_checker(float3 p, float scale) +{ + p *= scale; + + /* 0.00001 because of unit sized stuff */ + int xi = (int)fabsf(floor(0.00001f + p.x)); + int yi = (int)fabsf(floor(0.00001f + p.y)); + int zi = (int)fabsf(floor(0.00001f + p.z)); + + return ((xi % 2 == yi % 2) == (zi % 2))? 1.0f: 0.0f; +} + +__device void svm_node_tex_checker(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) +{ + uint co_offset, color1_offset, color2_offset, scale_offset; + uint color_offset, fac_offset; + + decode_node_uchar4(node.y, &co_offset, &color1_offset, &color2_offset, &scale_offset); + decode_node_uchar4(node.z, &color_offset, &fac_offset, NULL, NULL); + + float3 co = stack_load_float3(stack, co_offset); + float3 color1 = stack_load_float3(stack, color1_offset); + float3 color2 = stack_load_float3(stack, color2_offset); + float scale = stack_load_float_default(stack, scale_offset, node.w); + + float f = svm_checker(co, scale); + + if(stack_valid(color_offset)) + stack_store_float3(stack, color_offset, (f == 1.0f)? color1: color2); + if(stack_valid(fac_offset)) + stack_store_float(stack, fac_offset, f); +} + +CCL_NAMESPACE_END + -- cgit v1.2.3