diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_brick.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_brick.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_brick.h b/intern/cycles/kernel/svm/svm_brick.h new file mode 100644 index 00000000000..50de19b825d --- /dev/null +++ b/intern/cycles/kernel/svm/svm_brick.h @@ -0,0 +1,114 @@ +/* + * Copyright 2012, 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 + +/* Brick */ + +__device_noinline float brick_noise(int n) /* fast integer noise */ +{ + int nn; + n = (n >> 13) ^ n; + nn = (n * (n * n * 60493 + 19990303) + 1376312589) & 0x7fffffff; + return 0.5f * ((float)nn / 1073741824.0f); +} + +__device_noinline float svm_brick(float3 p, float scale, float mortar_size, float bias, + float brick_width, float row_height, float offset_amount, int offset_frequency, + float squash_amount, int squash_frequency, float *tint) +{ + p *= scale; + + int bricknum, rownum; + float offset = 0.0f; + float x, y; + + rownum = (int)floor(p.y / row_height); + + if(offset_frequency && squash_frequency) { + brick_width *= ((int)(rownum) % squash_frequency ) ? 1.0f : squash_amount; /* squash */ + offset = ((int)(rownum) % offset_frequency ) ? 0 : (brick_width*offset_amount); /* offset */ + } + + bricknum = (int)floor((p.x+offset) / brick_width); + + x = (p.x+offset) - brick_width*bricknum; + y = p.y - row_height*rownum; + + *tint = clamp((brick_noise((rownum << 16) + (bricknum & 0xFFFF)) + bias), 0.0f, 1.0f); + + return (x < mortar_size || y < mortar_size || + x > (brick_width - mortar_size) || + y > (row_height - mortar_size)) ? 1.0f : 0.0f; +} + +__device void svm_node_tex_brick(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) +{ + uint4 node2 = read_node(kg, offset); + uint4 node3 = read_node(kg, offset); + + /* Input and Output Sockets */ + uint co_offset, color1_offset, color2_offset, mortar_offset, scale_offset; + uint mortar_size_offset, bias_offset, brick_width_offset, row_height_offset; + uint color_offset, fac_offset; + + /* RNA properties */ + uint offset_frequency, squash_frequency; + + float tint = 0; + + decode_node_uchar4(node.y, &co_offset, &color1_offset, &color2_offset, &mortar_offset); + decode_node_uchar4(node.z, &scale_offset, &mortar_size_offset, &bias_offset, &brick_width_offset); + decode_node_uchar4(node.w, &row_height_offset, &color_offset, &fac_offset, NULL); + + decode_node_uchar4(node2.x, &offset_frequency, &squash_frequency, 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); + float3 mortar = stack_load_float3(stack, mortar_offset); + + float scale = stack_load_float_default(stack, scale_offset, node2.y); + float mortar_size = stack_load_float_default(stack, mortar_size_offset, node2.z); + float bias = stack_load_float_default(stack, bias_offset, node2.w); + float brick_width = stack_load_float_default(stack, brick_width_offset, node3.x); + float row_height = stack_load_float_default(stack, row_height_offset, node3.y); + float offset_amount = __int_as_float(node3.z); + float squash_amount = __int_as_float(node3.w); + + float f = svm_brick(co, scale, mortar_size, bias, brick_width, row_height, + offset_amount, offset_frequency, squash_amount, squash_frequency, + &tint); + + if(f != 1.0f) { + float facm = 1.0f - tint; + + color1.x = facm * (color1.x) + tint * color2.x; + color1.y = facm * (color1.y) + tint * color2.y; + color1.z = facm * (color1.z) + tint * color2.z; + } + + if(stack_valid(color_offset)) + stack_store_float3(stack, color_offset, (f == 1.0f)? mortar: color1); + if(stack_valid(fac_offset)) + stack_store_float(stack, fac_offset, f); +} + +CCL_NAMESPACE_END + |