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-rw-r--r--src/client/meshgen/collector.cpp104
-rw-r--r--src/client/meshgen/collector.h65
2 files changed, 169 insertions, 0 deletions
diff --git a/src/client/meshgen/collector.cpp b/src/client/meshgen/collector.cpp
new file mode 100644
index 000000000..c317a0772
--- /dev/null
+++ b/src/client/meshgen/collector.cpp
@@ -0,0 +1,104 @@
+/*
+Minetest
+Copyright (C) 2018 numzero, Lobachevskiy Vitaliy <numzer0@yandex.ru>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser 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.
+*/
+
+#include "collector.h"
+#include <stdexcept>
+#include "log.h"
+#include "mesh.h"
+
+void MeshCollector::append(const TileSpec &tile, const video::S3DVertex *vertices,
+ u32 numVertices, const u16 *indices, u32 numIndices)
+{
+ for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
+ const TileLayer *layer = &tile.layers[layernum];
+ if (layer->texture_id == 0)
+ continue;
+ append(*layer, vertices, numVertices, indices, numIndices, layernum,
+ tile.world_aligned);
+ }
+}
+
+void MeshCollector::append(const TileLayer &layer, const video::S3DVertex *vertices,
+ u32 numVertices, const u16 *indices, u32 numIndices, u8 layernum,
+ bool use_scale)
+{
+ PreMeshBuffer &p = findBuffer(layer, layernum, numVertices);
+
+ f32 scale = 1.0f;
+ if (use_scale)
+ scale = 1.0f / layer.scale;
+
+ u32 vertex_count = p.vertices.size();
+ for (u32 i = 0; i < numVertices; i++)
+ p.vertices.emplace_back(vertices[i].Pos, vertices[i].Normal,
+ vertices[i].Color, scale * vertices[i].TCoords);
+
+ for (u32 i = 0; i < numIndices; i++)
+ p.indices.push_back(indices[i] + vertex_count);
+}
+
+void MeshCollector::append(const TileSpec &tile, const video::S3DVertex *vertices,
+ u32 numVertices, const u16 *indices, u32 numIndices, v3f pos,
+ video::SColor c, u8 light_source)
+{
+ for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
+ const TileLayer *layer = &tile.layers[layernum];
+ if (layer->texture_id == 0)
+ continue;
+ append(*layer, vertices, numVertices, indices, numIndices, pos, c,
+ light_source, layernum, tile.world_aligned);
+ }
+}
+
+void MeshCollector::append(const TileLayer &layer, const video::S3DVertex *vertices,
+ u32 numVertices, const u16 *indices, u32 numIndices, v3f pos,
+ video::SColor c, u8 light_source, u8 layernum, bool use_scale)
+{
+ PreMeshBuffer &p = findBuffer(layer, layernum, numVertices);
+
+ f32 scale = 1.0f;
+ if (use_scale)
+ scale = 1.0f / layer.scale;
+
+ u32 vertex_count = p.vertices.size();
+ for (u32 i = 0; i < numVertices; i++) {
+ video::SColor color = c;
+ if (!light_source)
+ applyFacesShading(color, vertices[i].Normal);
+ p.vertices.emplace_back(vertices[i].Pos + pos, vertices[i].Normal, color,
+ scale * vertices[i].TCoords);
+ }
+
+ for (u32 i = 0; i < numIndices; i++)
+ p.indices.push_back(indices[i] + vertex_count);
+}
+
+PreMeshBuffer &MeshCollector::findBuffer(
+ const TileLayer &layer, u8 layernum, u32 numVertices)
+{
+ if (numVertices > U16_MAX)
+ throw std::invalid_argument(
+ "Mesh can't contain more than 65536 vertices");
+ std::vector<PreMeshBuffer> &buffers = prebuffers[layernum];
+ for (PreMeshBuffer &p : buffers)
+ if (p.layer == layer && p.vertices.size() + numVertices <= U16_MAX)
+ return p;
+ buffers.emplace_back(layer);
+ return buffers.back();
+}
diff --git a/src/client/meshgen/collector.h b/src/client/meshgen/collector.h
new file mode 100644
index 000000000..e4189088e
--- /dev/null
+++ b/src/client/meshgen/collector.h
@@ -0,0 +1,65 @@
+/*
+Minetest
+Copyright (C) 2018 numzero, Lobachevskiy Vitaliy <numzer0@yandex.ru>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser 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.
+*/
+
+#pragma once
+#include <array>
+#include <vector>
+#include "irrlichttypes.h"
+#include <S3DVertex.h>
+#include "client/tile.h"
+
+struct PreMeshBuffer
+{
+ TileLayer layer;
+ std::vector<u16> indices;
+ std::vector<video::S3DVertex> vertices;
+
+ PreMeshBuffer() = default;
+ explicit PreMeshBuffer(const TileLayer &layer) : layer(layer) {}
+};
+
+struct MeshCollector
+{
+ std::array<std::vector<PreMeshBuffer>, MAX_TILE_LAYERS> prebuffers;
+
+ // clang-format off
+ void append(const TileSpec &material,
+ const video::S3DVertex *vertices, u32 numVertices,
+ const u16 *indices, u32 numIndices);
+ void append(const TileSpec &material,
+ const video::S3DVertex *vertices, u32 numVertices,
+ const u16 *indices, u32 numIndices,
+ v3f pos, video::SColor c, u8 light_source);
+ // clang-format on
+
+private:
+ // clang-format off
+ void append(const TileLayer &material,
+ const video::S3DVertex *vertices, u32 numVertices,
+ const u16 *indices, u32 numIndices,
+ u8 layernum, bool use_scale = false);
+ void append(const TileLayer &material,
+ const video::S3DVertex *vertices, u32 numVertices,
+ const u16 *indices, u32 numIndices,
+ v3f pos, video::SColor c, u8 light_source,
+ u8 layernum, bool use_scale = false);
+ // clang-format on
+
+ PreMeshBuffer &findBuffer(const TileLayer &layer, u8 layernum, u32 numVertices);
+};