diff options
Diffstat (limited to 'scene/3d/voxel_light_baker.cpp')
| -rw-r--r-- | scene/3d/voxel_light_baker.cpp | 99 |
1 files changed, 67 insertions, 32 deletions
diff --git a/scene/3d/voxel_light_baker.cpp b/scene/3d/voxel_light_baker.cpp index edb9b9efd6..17aa649dff 100644 --- a/scene/3d/voxel_light_baker.cpp +++ b/scene/3d/voxel_light_baker.cpp @@ -1,5 +1,39 @@ +/*************************************************************************/ +/* voxel_light_baker.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + #include "voxel_light_baker.h" #include "os/os.h" +#include "os/threaded_array_processor.h" + +#include <stdlib.h> + #define FINDMINMAX(x0, x1, x2, min, max) \ min = max = x0; \ if (x1 < min) min = x1; \ @@ -1643,15 +1677,13 @@ Vector3 VoxelLightBaker::_compute_pixel_light_at_pos(const Vector3 &p_pos, const return accum; } -uint32_t xorshiftstate[] = { 123 }; // anything non-zero will do here - -_ALWAYS_INLINE_ uint32_t xorshift32() { +_ALWAYS_INLINE_ uint32_t xorshift32(uint32_t *state) { /* Algorithm "xor" from p. 4 of Marsaglia, "Xorshift RNGs" */ - uint32_t x = xorshiftstate[0]; + uint32_t x = *state; x ^= x << 13; x ^= x >> 17; x ^= x << 5; - xorshiftstate[0] = x; + *state = x; return x; } @@ -1677,11 +1709,13 @@ Vector3 VoxelLightBaker::_compute_ray_trace_at_pos(const Vector3 &p_pos, const V const Light *light = bake_light.ptr(); const Cell *cells = bake_cells.ptr(); + uint32_t local_rng_state = rand(); //needs to be fixed again + for (int i = 0; i < samples; i++) { - float random_angle1 = (((xorshift32() % 65535) / 65535.0) * 2.0 - 1.0) * spread; + float random_angle1 = (((xorshift32(&local_rng_state) % 65535) / 65535.0) * 2.0 - 1.0) * spread; Vector3 axis(0, sin(random_angle1), cos(random_angle1)); - float random_angle2 = ((xorshift32() % 65535) / 65535.0) * Math_PI * 2.0; + float random_angle2 = ((xorshift32(&local_rng_state) % 65535) / 65535.0) * Math_PI * 2.0; Basis rot(Vector3(0, 0, 1), random_angle2); axis = rot.xform(axis); @@ -1758,9 +1792,31 @@ Vector3 VoxelLightBaker::_compute_ray_trace_at_pos(const Vector3 &p_pos, const V } } + // Make sure we don't reset this thread's RNG state + return accum / samples; } +void VoxelLightBaker::_lightmap_bake_point(uint32_t p_x, LightMap *p_line) { + + + LightMap *pixel = &p_line[p_x]; + if (pixel->pos == Vector3()) + return; + //print_line("pos: " + pixel->pos + " normal " + pixel->normal); + switch (bake_mode) { + case BAKE_MODE_CONE_TRACE: { + pixel->light = _compute_pixel_light_at_pos(pixel->pos, pixel->normal) * energy; + } break; + case BAKE_MODE_RAY_TRACE: { + pixel->light = _compute_ray_trace_at_pos(pixel->pos, pixel->normal) * energy; + } break; + // pixel->light = Vector3(1, 1, 1); + //} + } + +} + Error VoxelLightBaker::make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float), void *p_bake_time_ud) { //transfer light information to a lightmap @@ -1815,39 +1871,18 @@ Error VoxelLightBaker::make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh _plot_triangle(uv, vertex, normal, lightmap.ptrw(), width, height); } } - //step 3 perform voxel cone trace on lightmap pixels + //step 3 perform voxel cone trace on lightmap pixels { LightMap *lightmap_ptr = lightmap.ptrw(); uint64_t begin_time = OS::get_singleton()->get_ticks_usec(); volatile int lines = 0; + // make sure our OS-level rng is seeded + for (int i = 0; i < height; i++) { - //print_line("bake line " + itos(i) + " / " + itos(height)); -#ifdef _OPENMP -#pragma omp parallel for schedule(dynamic, 1) -#endif - for (int j = 0; j < width; j++) { - - //if (i == 125 && j == 280) { - - LightMap *pixel = &lightmap_ptr[i * width + j]; - if (pixel->pos == Vector3()) - continue; //unused, skipe - - //print_line("pos: " + pixel->pos + " normal " + pixel->normal); - switch (bake_mode) { - case BAKE_MODE_CONE_TRACE: { - pixel->light = _compute_pixel_light_at_pos(pixel->pos, pixel->normal) * energy; - } break; - case BAKE_MODE_RAY_TRACE: { - pixel->light = _compute_ray_trace_at_pos(pixel->pos, pixel->normal) * energy; - } break; - // pixel->light = Vector3(1, 1, 1); - //} - } - } + thread_process_array(width,this,&VoxelLightBaker::_lightmap_bake_point,&lightmap_ptr[i*width]); lines = MAX(lines, i); //for multithread if (p_bake_time_func) { |