/*
-Minetest-c55
-Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+Minetest
+Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
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
*/
#include "mesh.h"
+#include "debug.h"
#include "log.h"
-#include <cassert>
+#include "irrMap.h"
#include <iostream>
#include <IAnimatedMesh.h>
#include <SAnimatedMesh.h>
-#include <ICameraSceneNode.h>
// In Irrlicht 1.8 the signature of ITexture::lock was changed from
// (bool, u32) to (E_TEXTURE_LOCK_MODE, u32).
#define MY_ETLM_READ_ONLY video::ETLM_READ_ONLY
#endif
+static void applyFacesShading(video::SColor& color, float factor)
+{
+ color.setRed(core::clamp(core::round32(color.getRed()*factor), 0, 255));
+ color.setGreen(core::clamp(core::round32(color.getGreen()*factor), 0, 255));
+ color.setBlue(core::clamp(core::round32(color.getBlue()*factor), 0, 255));
+}
+
scene::IAnimatedMesh* createCubeMesh(v3f scale)
{
video::SColor c(255,255,255,255);
return anim_mesh;
}
-static scene::IAnimatedMesh* extrudeARGB(u32 twidth, u32 theight, u8 *data)
-{
- const s32 argb_wstep = 4 * twidth;
- const s32 alpha_threshold = 1;
-
- scene::IMeshBuffer *buf = new scene::SMeshBuffer();
- video::SColor c(255,255,255,255);
-
- // Front and back
- {
- video::S3DVertex vertices[8] =
- {
- video::S3DVertex(-0.5,-0.5,-0.5, 0,0,-1, c, 0,1),
- video::S3DVertex(-0.5,+0.5,-0.5, 0,0,-1, c, 0,0),
- video::S3DVertex(+0.5,+0.5,-0.5, 0,0,-1, c, 1,0),
- video::S3DVertex(+0.5,-0.5,-0.5, 0,0,-1, c, 1,1),
- video::S3DVertex(+0.5,-0.5,+0.5, 0,0,+1, c, 1,1),
- video::S3DVertex(+0.5,+0.5,+0.5, 0,0,+1, c, 1,0),
- video::S3DVertex(-0.5,+0.5,+0.5, 0,0,+1, c, 0,0),
- video::S3DVertex(-0.5,-0.5,+0.5, 0,0,+1, c, 0,1),
- };
- u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
- buf->append(vertices, 8, indices, 12);
- }
-
- // "Interior"
- // (add faces where a solid pixel is next to a transparent one)
- u8 *solidity = new u8[(twidth+2) * (theight+2)];
- u32 wstep = twidth + 2;
- for (u32 y = 0; y < theight + 2; ++y)
- {
- u8 *scanline = solidity + y * wstep;
- if (y == 0 || y == theight + 1)
- {
- for (u32 x = 0; x < twidth + 2; ++x)
- scanline[x] = 0;
- }
- else
- {
- scanline[0] = 0;
- u8 *argb_scanline = data + (y - 1) * argb_wstep;
- for (u32 x = 0; x < twidth; ++x)
- scanline[x+1] = (argb_scanline[x*4+3] >= alpha_threshold);
- scanline[twidth + 1] = 0;
- }
- }
-
- // without this, there would be occasional "holes" in the mesh
- f32 eps = 0.01;
-
- for (u32 y = 0; y <= theight; ++y)
- {
- u8 *scanline = solidity + y * wstep + 1;
- for (u32 x = 0; x <= twidth; ++x)
- {
- if (scanline[x] && !scanline[x + wstep])
- {
- u32 xx = x + 1;
- while (scanline[xx] && !scanline[xx + wstep])
- ++xx;
- f32 vx1 = (x - eps) / (f32) twidth - 0.5;
- f32 vx2 = (xx + eps) / (f32) twidth - 0.5;
- f32 vy = 0.5 - (y - eps) / (f32) theight;
- f32 tx1 = x / (f32) twidth;
- f32 tx2 = xx / (f32) twidth;
- f32 ty = (y - 0.5) / (f32) theight;
- video::S3DVertex vertices[8] =
- {
- video::S3DVertex(vx1,vy,-0.5, 0,-1,0, c, tx1,ty),
- video::S3DVertex(vx2,vy,-0.5, 0,-1,0, c, tx2,ty),
- video::S3DVertex(vx2,vy,+0.5, 0,-1,0, c, tx2,ty),
- video::S3DVertex(vx1,vy,+0.5, 0,-1,0, c, tx1,ty),
- };
- u16 indices[6] = {0,1,2,2,3,0};
- buf->append(vertices, 4, indices, 6);
- x = xx - 1;
- }
- if (!scanline[x] && scanline[x + wstep])
- {
- u32 xx = x + 1;
- while (!scanline[xx] && scanline[xx + wstep])
- ++xx;
- f32 vx1 = (x - eps) / (f32) twidth - 0.5;
- f32 vx2 = (xx + eps) / (f32) twidth - 0.5;
- f32 vy = 0.5 - (y + eps) / (f32) theight;
- f32 tx1 = x / (f32) twidth;
- f32 tx2 = xx / (f32) twidth;
- f32 ty = (y + 0.5) / (f32) theight;
- video::S3DVertex vertices[8] =
- {
- video::S3DVertex(vx1,vy,-0.5, 0,1,0, c, tx1,ty),
- video::S3DVertex(vx1,vy,+0.5, 0,1,0, c, tx1,ty),
- video::S3DVertex(vx2,vy,+0.5, 0,1,0, c, tx2,ty),
- video::S3DVertex(vx2,vy,-0.5, 0,1,0, c, tx2,ty),
- };
- u16 indices[6] = {0,1,2,2,3,0};
- buf->append(vertices, 4, indices, 6);
- x = xx - 1;
- }
- }
- }
-
- for (u32 x = 0; x <= twidth; ++x)
- {
- u8 *scancol = solidity + x + wstep;
- for (u32 y = 0; y <= theight; ++y)
- {
- if (scancol[y * wstep] && !scancol[y * wstep + 1])
- {
- u32 yy = y + 1;
- while (scancol[yy * wstep] && !scancol[yy * wstep + 1])
- ++yy;
- f32 vx = (x - eps) / (f32) twidth - 0.5;
- f32 vy1 = 0.5 - (y - eps) / (f32) theight;
- f32 vy2 = 0.5 - (yy + eps) / (f32) theight;
- f32 tx = (x - 0.5) / (f32) twidth;
- f32 ty1 = y / (f32) theight;
- f32 ty2 = yy / (f32) theight;
- video::S3DVertex vertices[8] =
- {
- video::S3DVertex(vx,vy1,-0.5, 1,0,0, c, tx,ty1),
- video::S3DVertex(vx,vy1,+0.5, 1,0,0, c, tx,ty1),
- video::S3DVertex(vx,vy2,+0.5, 1,0,0, c, tx,ty2),
- video::S3DVertex(vx,vy2,-0.5, 1,0,0, c, tx,ty2),
- };
- u16 indices[6] = {0,1,2,2,3,0};
- buf->append(vertices, 4, indices, 6);
- y = yy - 1;
- }
- if (!scancol[y * wstep] && scancol[y * wstep + 1])
- {
- u32 yy = y + 1;
- while (!scancol[yy * wstep] && scancol[yy * wstep + 1])
- ++yy;
- f32 vx = (x + eps) / (f32) twidth - 0.5;
- f32 vy1 = 0.5 - (y - eps) / (f32) theight;
- f32 vy2 = 0.5 - (yy + eps) / (f32) theight;
- f32 tx = (x + 0.5) / (f32) twidth;
- f32 ty1 = y / (f32) theight;
- f32 ty2 = yy / (f32) theight;
- video::S3DVertex vertices[8] =
- {
- video::S3DVertex(vx,vy1,-0.5, -1,0,0, c, tx,ty1),
- video::S3DVertex(vx,vy2,-0.5, -1,0,0, c, tx,ty2),
- video::S3DVertex(vx,vy2,+0.5, -1,0,0, c, tx,ty2),
- video::S3DVertex(vx,vy1,+0.5, -1,0,0, c, tx,ty1),
- };
- u16 indices[6] = {0,1,2,2,3,0};
- buf->append(vertices, 4, indices, 6);
- y = yy - 1;
- }
- }
- }
-
- // Add to mesh
- scene::SMesh *mesh = new scene::SMesh();
- mesh->addMeshBuffer(buf);
- buf->drop();
- scene::SAnimatedMesh *anim_mesh = new scene::SAnimatedMesh(mesh);
- mesh->drop();
- return anim_mesh;
-}
-
-scene::IAnimatedMesh* createExtrudedMesh(video::ITexture *texture,
- video::IVideoDriver *driver, v3f scale)
-{
- scene::IAnimatedMesh *mesh = NULL;
- core::dimension2d<u32> size = texture->getSize();
- video::ECOLOR_FORMAT format = texture->getColorFormat();
- if (format == video::ECF_A8R8G8B8)
- {
- // Texture is in the correct color format, we can pass it
- // to extrudeARGB right away.
- void *data = texture->lock(MY_ETLM_READ_ONLY);
- if (data == NULL)
- return NULL;
- mesh = extrudeARGB(size.Width, size.Height, (u8*) data);
- texture->unlock();
- }
- else
- {
- video::IImage *img1 = driver->createImageFromData(format, size, texture->lock(MY_ETLM_READ_ONLY));
- if (img1 == NULL)
- return NULL;
-
- // img1 is in the texture's color format, convert to 8-bit ARGB
- video::IImage *img2 = driver->createImage(video::ECF_A8R8G8B8, size);
- if (img2 != NULL)
- {
- img1->copyTo(img2);
- img1->drop();
-
- mesh = extrudeARGB(size.Width, size.Height, (u8*) img2->lock());
- img2->unlock();
- img2->drop();
- }
- img1->drop();
- }
-
- // Set default material
- mesh->getMeshBuffer(0)->getMaterial().setTexture(0, texture);
- mesh->getMeshBuffer(0)->getMaterial().setFlag(video::EMF_LIGHTING, false);
- mesh->getMeshBuffer(0)->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
- mesh->getMeshBuffer(0)->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-
- scaleMesh(mesh, scale); // also recalculates bounding box
- return mesh;
-}
-
void scaleMesh(scene::IMesh *mesh, v3f scale)
{
- if(mesh == NULL)
+ if (mesh == NULL)
return;
core::aabbox3d<f32> bbox;
- bbox.reset(0,0,0);
+ bbox.reset(0, 0, 0);
- u16 mc = mesh->getMeshBufferCount();
- for(u16 j=0; j<mc; j++)
- {
+ u32 mc = mesh->getMeshBufferCount();
+ for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
- video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
- u16 vc = buf->getVertexCount();
- for(u16 i=0; i<vc; i++)
- {
- vertices[i].Pos *= scale;
- }
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *)buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++)
+ ((video::S3DVertex *)(vertices + i * stride))->Pos *= scale;
+
buf->recalculateBoundingBox();
// calculate total bounding box
- if(j == 0)
+ if (j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
void translateMesh(scene::IMesh *mesh, v3f vec)
{
- if(mesh == NULL)
+ if (mesh == NULL)
return;
core::aabbox3d<f32> bbox;
- bbox.reset(0,0,0);
+ bbox.reset(0, 0, 0);
- u16 mc = mesh->getMeshBufferCount();
- for(u16 j=0; j<mc; j++)
- {
+ u32 mc = mesh->getMeshBufferCount();
+ for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
- video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
- u16 vc = buf->getVertexCount();
- for(u16 i=0; i<vc; i++)
- {
- vertices[i].Pos += vec;
- }
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *)buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++)
+ ((video::S3DVertex *)(vertices + i * stride))->Pos += vec;
+
buf->recalculateBoundingBox();
// calculate total bounding box
- if(j == 0)
+ if (j == 0)
bbox = buf->getBoundingBox();
else
bbox.addInternalBox(buf->getBoundingBox());
mesh->setBoundingBox(bbox);
}
+
void setMeshColor(scene::IMesh *mesh, const video::SColor &color)
{
- if(mesh == NULL)
+ if (mesh == NULL)
return;
-
- u16 mc = mesh->getMeshBufferCount();
- for(u16 j=0; j<mc; j++)
- {
+
+ u32 mc = mesh->getMeshBufferCount();
+ for (u32 j = 0; j < mc; j++) {
scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
- video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
- u16 vc = buf->getVertexCount();
- for(u16 i=0; i<vc; i++)
- {
- vertices[i].Color = color;
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *)buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++)
+ ((video::S3DVertex *)(vertices + i * stride))->Color = color;
+ }
+}
+
+void shadeMeshFaces(scene::IMesh *mesh)
+{
+ if (mesh == NULL)
+ return;
+
+ u32 mc = mesh->getMeshBufferCount();
+ for (u32 j = 0; j < mc; j++) {
+ scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+ const u32 stride = getVertexPitchFromType(buf->getVertexType());
+ u32 vertex_count = buf->getVertexCount();
+ u8 *vertices = (u8 *)buf->getVertices();
+ for (u32 i = 0; i < vertex_count; i++) {
+ video::S3DVertex *vertex = (video::S3DVertex *)(vertices + i * stride);
+ video::SColor &vc = vertex->Color;
+ if (vertex->Normal.Y < -0.5) {
+ applyFacesShading (vc, 0.447213);
+ } else if (vertex->Normal.Z > 0.5) {
+ applyFacesShading (vc, 0.670820);
+ } else if (vertex->Normal.Z < -0.5) {
+ applyFacesShading (vc, 0.670820);
+ } else if (vertex->Normal.X > 0.5) {
+ applyFacesShading (vc, 0.836660);
+ } else if (vertex->Normal.X < -0.5) {
+ applyFacesShading (vc, 0.836660);
+ }
}
}
}
}
}
-video::ITexture *generateTextureFromMesh(scene::IMesh *mesh,
- IrrlichtDevice *device,
- core::dimension2d<u32> dim,
- std::string texture_name,
- v3f camera_position,
- v3f camera_lookat,
- core::CMatrix4<f32> camera_projection_matrix,
- video::SColorf ambient_light,
- v3f light_position,
- video::SColorf light_color,
- f32 light_radius)
+void rotateMeshXYby (scene::IMesh *mesh, f64 degrees)
+{
+ u16 mc = mesh->getMeshBufferCount();
+ for(u16 j = 0; j < mc; j++)
+ {
+ scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+ video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+ u16 vc = buf->getVertexCount();
+ for(u16 i = 0; i < vc; i++)
+ {
+ vertices[i].Pos.rotateXYBy(degrees);
+ }
+ }
+}
+
+void rotateMeshXZby (scene::IMesh *mesh, f64 degrees)
+{
+ u16 mc = mesh->getMeshBufferCount();
+ for(u16 j = 0; j < mc; j++)
+ {
+ scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+ video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+ u16 vc = buf->getVertexCount();
+ for(u16 i = 0; i < vc; i++)
+ {
+ vertices[i].Pos.rotateXZBy(degrees);
+ }
+ }
+}
+
+void rotateMeshYZby (scene::IMesh *mesh, f64 degrees)
+{
+ u16 mc = mesh->getMeshBufferCount();
+ for(u16 j = 0; j < mc; j++)
+ {
+ scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+ video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+ u16 vc = buf->getVertexCount();
+ for(u16 i = 0; i < vc; i++)
+ {
+ vertices[i].Pos.rotateYZBy(degrees);
+ }
+ }
+}
+
+void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir)
+{
+ int axisdir = facedir>>2;
+ facedir &= 0x03;
+
+ u16 mc = mesh->getMeshBufferCount();
+ for(u16 j = 0; j < mc; j++)
+ {
+ scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+ video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+ u16 vc = buf->getVertexCount();
+ for(u16 i=0; i<vc; i++)
+ {
+ switch (axisdir)
+ {
+ case 0:
+ if(facedir == 1)
+ vertices[i].Pos.rotateXZBy(-90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateXZBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateXZBy(90);
+ break;
+ case 1: // z+
+ vertices[i].Pos.rotateYZBy(90);
+ if(facedir == 1)
+ vertices[i].Pos.rotateXYBy(90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateXYBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateXYBy(-90);
+ break;
+ case 2: //z-
+ vertices[i].Pos.rotateYZBy(-90);
+ if(facedir == 1)
+ vertices[i].Pos.rotateXYBy(-90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateXYBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateXYBy(90);
+ break;
+ case 3: //x+
+ vertices[i].Pos.rotateXYBy(-90);
+ if(facedir == 1)
+ vertices[i].Pos.rotateYZBy(90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateYZBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateYZBy(-90);
+ break;
+ case 4: //x-
+ vertices[i].Pos.rotateXYBy(90);
+ if(facedir == 1)
+ vertices[i].Pos.rotateYZBy(-90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateYZBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateYZBy(90);
+ break;
+ case 5:
+ vertices[i].Pos.rotateXYBy(-180);
+ if(facedir == 1)
+ vertices[i].Pos.rotateXZBy(90);
+ else if(facedir == 2)
+ vertices[i].Pos.rotateXZBy(180);
+ else if(facedir == 3)
+ vertices[i].Pos.rotateXZBy(-90);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+}
+
+void recalculateBoundingBox(scene::IMesh *src_mesh)
{
- video::IVideoDriver *driver = device->getVideoDriver();
- if(driver->queryFeature(video::EVDF_RENDER_TO_TARGET) == false)
+ core::aabbox3d<f32> bbox;
+ bbox.reset(0,0,0);
+ for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
{
- static bool warned = false;
- if(!warned)
+ scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
+ buf->recalculateBoundingBox();
+ if(j == 0)
+ bbox = buf->getBoundingBox();
+ else
+ bbox.addInternalBox(buf->getBoundingBox());
+ }
+ src_mesh->setBoundingBox(bbox);
+}
+
+scene::IMesh* cloneMesh(scene::IMesh *src_mesh)
+{
+ scene::SMesh* dst_mesh = new scene::SMesh();
+ for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
+ {
+ scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
+ video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+ u16 *indices = (u16*)buf->getIndices();
+ scene::SMeshBuffer *temp_buf = new scene::SMeshBuffer();
+ temp_buf->append(vertices, buf->getVertexCount(),
+ indices, buf->getIndexCount());
+ dst_mesh->addMeshBuffer(temp_buf);
+ temp_buf->drop();
+ }
+ return dst_mesh;
+}
+
+scene::IMesh* convertNodeboxNodeToMesh(ContentFeatures *f)
+{
+ scene::SMesh* dst_mesh = new scene::SMesh();
+ for (u16 j = 0; j < 6; j++)
+ {
+ scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+ buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+ buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
+ dst_mesh->addMeshBuffer(buf);
+ buf->drop();
+ }
+
+ video::SColor c(255,255,255,255);
+
+ std::vector<aabb3f> boxes = f->node_box.fixed;
+
+ for(std::vector<aabb3f>::iterator
+ i = boxes.begin();
+ i != boxes.end(); i++)
+ {
+ aabb3f box = *i;
+
+ f32 temp;
+ if (box.MinEdge.X > box.MaxEdge.X)
+ {
+ temp=box.MinEdge.X;
+ box.MinEdge.X=box.MaxEdge.X;
+ box.MaxEdge.X=temp;
+ }
+ if (box.MinEdge.Y > box.MaxEdge.Y)
+ {
+ temp=box.MinEdge.Y;
+ box.MinEdge.Y=box.MaxEdge.Y;
+ box.MaxEdge.Y=temp;
+ }
+ if (box.MinEdge.Z > box.MaxEdge.Z)
+ {
+ temp=box.MinEdge.Z;
+ box.MinEdge.Z=box.MaxEdge.Z;
+ box.MaxEdge.Z=temp;
+ }
+ // Compute texture coords
+ f32 tx1 = (box.MinEdge.X/BS)+0.5;
+ f32 ty1 = (box.MinEdge.Y/BS)+0.5;
+ f32 tz1 = (box.MinEdge.Z/BS)+0.5;
+ f32 tx2 = (box.MaxEdge.X/BS)+0.5;
+ f32 ty2 = (box.MaxEdge.Y/BS)+0.5;
+ f32 tz2 = (box.MaxEdge.Z/BS)+0.5;
+ f32 txc[24] = {
+ // up
+ tx1, 1-tz2, tx2, 1-tz1,
+ // down
+ tx1, tz1, tx2, tz2,
+ // right
+ tz1, 1-ty2, tz2, 1-ty1,
+ // left
+ 1-tz2, 1-ty2, 1-tz1, 1-ty1,
+ // back
+ 1-tx2, 1-ty2, 1-tx1, 1-ty1,
+ // front
+ tx1, 1-ty2, tx2, 1-ty1,
+ };
+ v3f min = box.MinEdge;
+ v3f max = box.MaxEdge;
+
+ video::S3DVertex vertices[24] =
{
- errorstream<<"generateTextureFromMesh(): EVDF_RENDER_TO_TARGET"
- " not supported."<<std::endl;
- warned = true;
+ // up
+ video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
+ video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
+ video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
+ video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
+ // down
+ video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
+ video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
+ video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
+ video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
+ // right
+ video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
+ video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
+ video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
+ video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
+ // left
+ video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
+ video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
+ video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
+ video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
+ // back
+ video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
+ video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
+ video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
+ video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
+ // front
+ video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
+ video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
+ video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
+ video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
+ };
+
+ u16 indices[] = {0,1,2,2,3,0};
+
+ for(u16 j = 0; j < 24; j += 4)
+ {
+ scene::IMeshBuffer *buf = dst_mesh->getMeshBuffer(j / 4);
+ buf->append(vertices + j, 4, indices, 6);
}
- return NULL;
+ }
+ return dst_mesh;
+}
+
+struct vcache
+{
+ core::array<u32> tris;
+ float score;
+ s16 cachepos;
+ u16 NumActiveTris;
+};
+
+struct tcache
+{
+ u16 ind[3];
+ float score;
+ bool drawn;
+};
+
+const u16 cachesize = 32;
+
+float FindVertexScore(vcache *v)
+{
+ const float CacheDecayPower = 1.5f;
+ const float LastTriScore = 0.75f;
+ const float ValenceBoostScale = 2.0f;
+ const float ValenceBoostPower = 0.5f;
+ const float MaxSizeVertexCache = 32.0f;
+
+ if (v->NumActiveTris == 0)
+ {
+ // No tri needs this vertex!
+ return -1.0f;
}
- // Create render target texture
- video::ITexture *rtt = driver->addRenderTargetTexture(
- dim, texture_name.c_str(), video::ECF_A8R8G8B8);
- if(rtt == NULL)
+ float Score = 0.0f;
+ int CachePosition = v->cachepos;
+ if (CachePosition < 0)
{
- errorstream<<"generateTextureFromMesh(): addRenderTargetTexture"
- " returned NULL."<<std::endl;
- return NULL;
+ // Vertex is not in FIFO cache - no score.
+ }
+ else
+ {
+ if (CachePosition < 3)
+ {
+ // This vertex was used in the last triangle,
+ // so it has a fixed score.
+ Score = LastTriScore;
+ }
+ else
+ {
+ // Points for being high in the cache.
+ const float Scaler = 1.0f / (MaxSizeVertexCache - 3);
+ Score = 1.0f - (CachePosition - 3) * Scaler;
+ Score = powf(Score, CacheDecayPower);
+ }
}
- // Set render target
- driver->setRenderTarget(rtt, true, true, video::SColor(0,0,0,0));
-
- // Get a scene manager
- scene::ISceneManager *smgr_main = device->getSceneManager();
- assert(smgr_main);
- scene::ISceneManager *smgr = smgr_main->createNewSceneManager();
- assert(smgr);
-
- scene::IMeshSceneNode* meshnode = smgr->addMeshSceneNode(mesh, NULL, -1, v3f(0,0,0), v3f(0,0,0), v3f(1,1,1), true);
- meshnode->setMaterialFlag(video::EMF_LIGHTING, true);
- meshnode->setMaterialFlag(video::EMF_ANTI_ALIASING, true);
- meshnode->setMaterialFlag(video::EMF_BILINEAR_FILTER, true);
-
- scene::ICameraSceneNode* camera = smgr->addCameraSceneNode(0,
- camera_position, camera_lookat);
- // second parameter of setProjectionMatrix (isOrthogonal) is ignored
- camera->setProjectionMatrix(camera_projection_matrix, false);
-
- smgr->setAmbientLight(ambient_light);
- smgr->addLightSceneNode(0, light_position, light_color, light_radius);
-
- // Render scene
- driver->beginScene(true, true, video::SColor(0,0,0,0));
- smgr->drawAll();
- driver->endScene();
-
- // NOTE: The scene nodes should not be dropped, otherwise
- // smgr->drop() segfaults
- /*cube->drop();
- camera->drop();
- light->drop();*/
- // Drop scene manager
- smgr->drop();
-
- // Unset render target
- driver->setRenderTarget(0, true, true, 0);
-
- return rtt;
+ // Bonus points for having a low number of tris still to
+ // use the vert, so we get rid of lone verts quickly.
+ float ValenceBoost = powf(v->NumActiveTris,
+ -ValenceBoostPower);
+ Score += ValenceBoostScale * ValenceBoost;
+
+ return Score;
+}
+
+/*
+ A specialized LRU cache for the Forsyth algorithm.
+*/
+
+class f_lru
+{
+
+public:
+ f_lru(vcache *v, tcache *t): vc(v), tc(t)
+ {
+ for (u16 i = 0; i < cachesize; i++)
+ {
+ cache[i] = -1;
+ }
+ }
+
+ // Adds this vertex index and returns the highest-scoring triangle index
+ u32 add(u16 vert, bool updatetris = false)
+ {
+ bool found = false;
+
+ // Mark existing pos as empty
+ for (u16 i = 0; i < cachesize; i++)
+ {
+ if (cache[i] == vert)
+ {
+ // Move everything down
+ for (u16 j = i; j; j--)
+ {
+ cache[j] = cache[j - 1];
+ }
+
+ found = true;
+ break;
+ }
+ }
+
+ if (!found)
+ {
+ if (cache[cachesize-1] != -1)
+ vc[cache[cachesize-1]].cachepos = -1;
+
+ // Move everything down
+ for (u16 i = cachesize - 1; i; i--)
+ {
+ cache[i] = cache[i - 1];
+ }
+ }
+
+ cache[0] = vert;
+
+ u32 highest = 0;
+ float hiscore = 0;
+
+ if (updatetris)
+ {
+ // Update cache positions
+ for (u16 i = 0; i < cachesize; i++)
+ {
+ if (cache[i] == -1)
+ break;
+
+ vc[cache[i]].cachepos = i;
+ vc[cache[i]].score = FindVertexScore(&vc[cache[i]]);
+ }
+
+ // Update triangle scores
+ for (u16 i = 0; i < cachesize; i++)
+ {
+ if (cache[i] == -1)
+ break;
+
+ const u16 trisize = vc[cache[i]].tris.size();
+ for (u16 t = 0; t < trisize; t++)
+ {
+ tcache *tri = &tc[vc[cache[i]].tris[t]];
+
+ tri->score =
+ vc[tri->ind[0]].score +
+ vc[tri->ind[1]].score +
+ vc[tri->ind[2]].score;
+
+ if (tri->score > hiscore)
+ {
+ hiscore = tri->score;
+ highest = vc[cache[i]].tris[t];
+ }
+ }
+ }
+ }
+
+ return highest;
+ }
+
+private:
+ s32 cache[cachesize];
+ vcache *vc;
+ tcache *tc;
+};
+
+/**
+Vertex cache optimization according to the Forsyth paper:
+http://home.comcast.net/~tom_forsyth/papers/fast_vert_cache_opt.html
+
+The function is thread-safe (read: you can optimize several meshes in different threads)
+
+\param mesh Source mesh for the operation. */
+scene::IMesh* createForsythOptimizedMesh(const scene::IMesh *mesh)
+{
+ if (!mesh)
+ return 0;
+
+ scene::SMesh *newmesh = new scene::SMesh();
+ newmesh->BoundingBox = mesh->getBoundingBox();
+
+ const u32 mbcount = mesh->getMeshBufferCount();
+
+ for (u32 b = 0; b < mbcount; ++b)
+ {
+ const scene::IMeshBuffer *mb = mesh->getMeshBuffer(b);
+
+ if (mb->getIndexType() != video::EIT_16BIT)
+ {
+ //os::Printer::log("Cannot optimize a mesh with 32bit indices", ELL_ERROR);
+ newmesh->drop();
+ return 0;
+ }
+
+ const u32 icount = mb->getIndexCount();
+ const u32 tcount = icount / 3;
+ const u32 vcount = mb->getVertexCount();
+ const u16 *ind = mb->getIndices();
+
+ vcache *vc = new vcache[vcount];
+ tcache *tc = new tcache[tcount];
+
+ f_lru lru(vc, tc);
+
+ // init
+ for (u16 i = 0; i < vcount; i++)
+ {
+ vc[i].score = 0;
+ vc[i].cachepos = -1;
+ vc[i].NumActiveTris = 0;
+ }
+
+ // First pass: count how many times a vert is used
+ for (u32 i = 0; i < icount; i += 3)
+ {
+ vc[ind[i]].NumActiveTris++;
+ vc[ind[i + 1]].NumActiveTris++;
+ vc[ind[i + 2]].NumActiveTris++;
+
+ const u32 tri_ind = i/3;
+ tc[tri_ind].ind[0] = ind[i];
+ tc[tri_ind].ind[1] = ind[i + 1];
+ tc[tri_ind].ind[2] = ind[i + 2];
+ }
+
+ // Second pass: list of each triangle
+ for (u32 i = 0; i < tcount; i++)
+ {
+ vc[tc[i].ind[0]].tris.push_back(i);
+ vc[tc[i].ind[1]].tris.push_back(i);
+ vc[tc[i].ind[2]].tris.push_back(i);
+
+ tc[i].drawn = false;
+ }
+
+ // Give initial scores
+ for (u16 i = 0; i < vcount; i++)
+ {
+ vc[i].score = FindVertexScore(&vc[i]);
+ }
+ for (u32 i = 0; i < tcount; i++)
+ {
+ tc[i].score =
+ vc[tc[i].ind[0]].score +
+ vc[tc[i].ind[1]].score +
+ vc[tc[i].ind[2]].score;
+ }
+
+ switch(mb->getVertexType())
+ {
+ case video::EVT_STANDARD:
+ {
+ video::S3DVertex *v = (video::S3DVertex *) mb->getVertices();
+
+ scene::SMeshBuffer *buf = new scene::SMeshBuffer();
+ buf->Material = mb->getMaterial();
+
+ buf->Vertices.reallocate(vcount);
+ buf->Indices.reallocate(icount);
+
+ core::map<const video::S3DVertex, const u16> sind; // search index for fast operation
+ typedef core::map<const video::S3DVertex, const u16>::Node snode;
+
+ // Main algorithm
+ u32 highest = 0;
+ u32 drawcalls = 0;
+ for (;;)
+ {
+ if (tc[highest].drawn)
+ {
+ bool found = false;
+ float hiscore = 0;
+ for (u32 t = 0; t < tcount; t++)
+ {
+ if (!tc[t].drawn)
+ {
+ if (tc[t].score > hiscore)
+ {
+ highest = t;
+ hiscore = tc[t].score;
+ found = true;
+ }
+ }
+ }
+ if (!found)
+ break;
+ }
+
+ // Output the best triangle
+ u16 newind = buf->Vertices.size();
+
+ snode *s = sind.find(v[tc[highest].ind[0]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[0]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[0]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[1]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[1]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[1]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[2]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[2]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[2]], newind);
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ vc[tc[highest].ind[0]].NumActiveTris--;
+ vc[tc[highest].ind[1]].NumActiveTris--;
+ vc[tc[highest].ind[2]].NumActiveTris--;
+
+ tc[highest].drawn = true;
+
+ for (u16 j = 0; j < 3; j++)
+ {
+ vcache *vert = &vc[tc[highest].ind[j]];
+ for (u16 t = 0; t < vert->tris.size(); t++)
+ {
+ if (highest == vert->tris[t])
+ {
+ vert->tris.erase(t);
+ break;
+ }
+ }
+ }
+
+ lru.add(tc[highest].ind[0]);
+ lru.add(tc[highest].ind[1]);
+ highest = lru.add(tc[highest].ind[2], true);
+ drawcalls++;
+ }
+
+ buf->setBoundingBox(mb->getBoundingBox());
+ newmesh->addMeshBuffer(buf);
+ buf->drop();
+ }
+ break;
+ case video::EVT_2TCOORDS:
+ {
+ video::S3DVertex2TCoords *v = (video::S3DVertex2TCoords *) mb->getVertices();
+
+ scene::SMeshBufferLightMap *buf = new scene::SMeshBufferLightMap();
+ buf->Material = mb->getMaterial();
+
+ buf->Vertices.reallocate(vcount);
+ buf->Indices.reallocate(icount);
+
+ core::map<const video::S3DVertex2TCoords, const u16> sind; // search index for fast operation
+ typedef core::map<const video::S3DVertex2TCoords, const u16>::Node snode;
+
+ // Main algorithm
+ u32 highest = 0;
+ u32 drawcalls = 0;
+ for (;;)
+ {
+ if (tc[highest].drawn)
+ {
+ bool found = false;
+ float hiscore = 0;
+ for (u32 t = 0; t < tcount; t++)
+ {
+ if (!tc[t].drawn)
+ {
+ if (tc[t].score > hiscore)
+ {
+ highest = t;
+ hiscore = tc[t].score;
+ found = true;
+ }
+ }
+ }
+ if (!found)
+ break;
+ }
+
+ // Output the best triangle
+ u16 newind = buf->Vertices.size();
+
+ snode *s = sind.find(v[tc[highest].ind[0]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[0]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[0]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[1]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[1]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[1]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[2]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[2]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[2]], newind);
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ vc[tc[highest].ind[0]].NumActiveTris--;
+ vc[tc[highest].ind[1]].NumActiveTris--;
+ vc[tc[highest].ind[2]].NumActiveTris--;
+
+ tc[highest].drawn = true;
+
+ for (u16 j = 0; j < 3; j++)
+ {
+ vcache *vert = &vc[tc[highest].ind[j]];
+ for (u16 t = 0; t < vert->tris.size(); t++)
+ {
+ if (highest == vert->tris[t])
+ {
+ vert->tris.erase(t);
+ break;
+ }
+ }
+ }
+
+ lru.add(tc[highest].ind[0]);
+ lru.add(tc[highest].ind[1]);
+ highest = lru.add(tc[highest].ind[2]);
+ drawcalls++;
+ }
+
+ buf->setBoundingBox(mb->getBoundingBox());
+ newmesh->addMeshBuffer(buf);
+ buf->drop();
+
+ }
+ break;
+ case video::EVT_TANGENTS:
+ {
+ video::S3DVertexTangents *v = (video::S3DVertexTangents *) mb->getVertices();
+
+ scene::SMeshBufferTangents *buf = new scene::SMeshBufferTangents();
+ buf->Material = mb->getMaterial();
+
+ buf->Vertices.reallocate(vcount);
+ buf->Indices.reallocate(icount);
+
+ core::map<const video::S3DVertexTangents, const u16> sind; // search index for fast operation
+ typedef core::map<const video::S3DVertexTangents, const u16>::Node snode;
+
+ // Main algorithm
+ u32 highest = 0;
+ u32 drawcalls = 0;
+ for (;;)
+ {
+ if (tc[highest].drawn)
+ {
+ bool found = false;
+ float hiscore = 0;
+ for (u32 t = 0; t < tcount; t++)
+ {
+ if (!tc[t].drawn)
+ {
+ if (tc[t].score > hiscore)
+ {
+ highest = t;
+ hiscore = tc[t].score;
+ found = true;
+ }
+ }
+ }
+ if (!found)
+ break;
+ }
+
+ // Output the best triangle
+ u16 newind = buf->Vertices.size();
+
+ snode *s = sind.find(v[tc[highest].ind[0]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[0]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[0]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[1]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[1]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[1]], newind);
+ newind++;
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ s = sind.find(v[tc[highest].ind[2]]);
+
+ if (!s)
+ {
+ buf->Vertices.push_back(v[tc[highest].ind[2]]);
+ buf->Indices.push_back(newind);
+ sind.insert(v[tc[highest].ind[2]], newind);
+ }
+ else
+ {
+ buf->Indices.push_back(s->getValue());
+ }
+
+ vc[tc[highest].ind[0]].NumActiveTris--;
+ vc[tc[highest].ind[1]].NumActiveTris--;
+ vc[tc[highest].ind[2]].NumActiveTris--;
+
+ tc[highest].drawn = true;
+
+ for (u16 j = 0; j < 3; j++)
+ {
+ vcache *vert = &vc[tc[highest].ind[j]];
+ for (u16 t = 0; t < vert->tris.size(); t++)
+ {
+ if (highest == vert->tris[t])
+ {
+ vert->tris.erase(t);
+ break;
+ }
+ }
+ }
+
+ lru.add(tc[highest].ind[0]);
+ lru.add(tc[highest].ind[1]);
+ highest = lru.add(tc[highest].ind[2]);
+ drawcalls++;
+ }
+
+ buf->setBoundingBox(mb->getBoundingBox());
+ newmesh->addMeshBuffer(buf);
+ buf->drop();
+ }
+ break;
+ }
+
+ delete [] vc;
+ delete [] tc;
+
+ } // for each meshbuffer
+
+ return newmesh;
}
projects / dragonfireclient.git / blobdiff