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e144ef03a2
0ad/source/renderer/PatchRData.cpp
Ykkrosh e140aa7baf Avoid running the old simulation code in the background when it's not needed. 
Optimise GUI updates to only occur when necessary.
Switch to more peaceful music after starting the game.

This was SVN commit r7492.
2010-05-01 16:20:58 +00:00

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/* Copyright (C) 2009 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include <set>
#include <algorithm>
#include "ps/Pyrogenesis.h"
#include "lib/res/graphics/ogl_tex.h"
#include "graphics/LightEnv.h"
#include "Renderer.h"
#include "renderer/PatchRData.h"
#include "AlphaMapCalculator.h"
#include "ps/CLogger.h"
#include "ps/Profile.h"
#include "ps/Game.h"
#include "ps/World.h"
#include "maths/MathUtil.h"
#include "simulation/LOSManager.h"
#include "graphics/Patch.h"
#include "graphics/Terrain.h"
#include "simulation2/Simulation2.h"
const ssize_t BlendOffsets[8][2] = {
{ 0, -1 },
{ -1, -1 },
{ -1, 0 },
{ -1, 1 },
{ 0, 1 },
{ 1, 1 },
{ 1, 0 },
{ 1, -1 }
};
///////////////////////////////////////////////////////////////////
// CPatchRData constructor
CPatchRData::CPatchRData(CPatch* patch) : m_Patch(patch), m_VBBase(0), m_VBBlends(0), m_Vertices(0)
{
debug_assert(patch);
Build();
}
///////////////////////////////////////////////////////////////////
// CPatchRData destructor
CPatchRData::~CPatchRData()
{
// delete copy of vertex data
delete[] m_Vertices;
// release vertex buffer chunks
if (m_VBBase) g_VBMan.Release(m_VBBase);
if (m_VBBlends) g_VBMan.Release(m_VBBlends);
}
static Handle GetTerrainTileTexture(CTerrain* terrain,ssize_t gx,ssize_t gz)
{
CMiniPatch* mp=terrain->GetTile(gx,gz);
return mp ? mp->Tex1 : 0;
}
const float uvFactor = 0.125f / sqrt(2.f);
static void CalculateUV(float uv[2], ssize_t x, ssize_t z)
{
// The UV axes are offset 45 degrees from XZ
uv[0] = ( x-z)*uvFactor;
uv[1] = (-x-z)*uvFactor;
}
struct STmpSplat {
Handle m_Texture;
u16 m_Indices[4];
};
void CPatchRData::BuildBlends()
{
m_BlendIndices.clear();
m_BlendSplats.clear();
m_BlendVertices.clear();
m_BlendVertexIndices.clear();
CTerrain* terrain=m_Patch->m_Parent;
// temporary list of splats
std::vector<STmpSplat> splats;
// set of textures used for splats
std::set<Handle> splatTextures;
// for each tile in patch ..
for (ssize_t j=0;j<PATCH_SIZE;j++) {
for (ssize_t i=0;i<PATCH_SIZE;i++) {
ssize_t gx,gz;
CMiniPatch* mp=&m_Patch->m_MiniPatches[j][i];
mp->GetTileIndex(gx,gz);
// build list of textures of higher priority than current tile that are used by neighbouring tiles
std::vector<STex> neighbourTextures;
for (int m=-1;m<=1;m++) {
for (int k=-1;k<=1;k++) {
CMiniPatch* nmp=terrain->GetTile(gx+k,gz+m);
if (nmp && nmp->Tex1 != mp->Tex1) {
if (nmp->Tex1Priority>mp->Tex1Priority || (nmp->Tex1Priority==mp->Tex1Priority && nmp->Tex1>mp->Tex1)) {
STex tex;
tex.m_Handle=nmp->Tex1;
tex.m_Priority=nmp->Tex1Priority;
if (std::find(neighbourTextures.begin(),neighbourTextures.end(),tex)==neighbourTextures.end()) {
neighbourTextures.push_back(tex);
}
}
}
}
}
if (neighbourTextures.size()>0) {
// sort textures from lowest to highest priority
std::sort(neighbourTextures.begin(),neighbourTextures.end());
// for each of the neighbouring textures ..
size_t count=neighbourTextures.size();
for (size_t k=0;k<count;++k) {
// now build the grid of blends dependent on whether the tile adjacent to the current tile
// uses the current neighbour texture
BlendShape8 shape;
for (size_t m=0;m<8;m++) {
ssize_t ox=gx+BlendOffsets[m][1];
ssize_t oz=gz+BlendOffsets[m][0];
// get texture on adjacent tile
Handle atex=GetTerrainTileTexture(terrain,ox,oz);
// fill 0/1 into shape array
shape[m]=(atex==neighbourTextures[k].m_Handle) ? 0 : 1;
}
// calculate the required alphamap and the required rotation of the alphamap from blendshape
unsigned int alphamapflags;
int alphamap=CAlphaMapCalculator::Calculate(shape,alphamapflags);
// now actually render the blend tile (if we need one)
if (alphamap!=-1) {
float u0=g_Renderer.m_AlphaMapCoords[alphamap].u0;
float u1=g_Renderer.m_AlphaMapCoords[alphamap].u1;
float v0=g_Renderer.m_AlphaMapCoords[alphamap].v0;
float v1=g_Renderer.m_AlphaMapCoords[alphamap].v1;
if (alphamapflags & BLENDMAP_FLIPU) {
// flip u
float t=u0;
u0=u1;
u1=t;
}
if (alphamapflags & BLENDMAP_FLIPV) {
// flip v
float t=v0;
v0=v1;
v1=t;
}
int base=0;
if (alphamapflags & BLENDMAP_ROTATE90) {
// rotate 1
base=1;
} else if (alphamapflags & BLENDMAP_ROTATE180) {
// rotate 2
base=2;
} else if (alphamapflags & BLENDMAP_ROTATE270) {
// rotate 3
base=3;
}
SBlendVertex vtx[4];
vtx[(base+0)%4].m_AlphaUVs[0]=u0;
vtx[(base+0)%4].m_AlphaUVs[1]=v0;
vtx[(base+1)%4].m_AlphaUVs[0]=u1;
vtx[(base+1)%4].m_AlphaUVs[1]=v0;
vtx[(base+2)%4].m_AlphaUVs[0]=u1;
vtx[(base+2)%4].m_AlphaUVs[1]=v1;
vtx[(base+3)%4].m_AlphaUVs[0]=u0;
vtx[(base+3)%4].m_AlphaUVs[1]=v1;
ssize_t vsize=PATCH_SIZE+1;
SBlendVertex dst;
const size_t vindex=m_BlendVertices.size();
const SBaseVertex& vtx0=m_Vertices[(j*vsize)+i];
CalculateUV(dst.m_UVs, gx, gz);
dst.m_AlphaUVs[0]=vtx[0].m_AlphaUVs[0];
dst.m_AlphaUVs[1]=vtx[0].m_AlphaUVs[1];
dst.m_LOSColor=vtx0.m_LOSColor;
dst.m_Position=vtx0.m_Position;
m_BlendVertices.push_back(dst);
m_BlendVertexIndices.push_back((j*vsize)+i);
const SBaseVertex& vtx1=m_Vertices[(j*vsize)+i+1];
CalculateUV(dst.m_UVs, gx+1, gz);
dst.m_AlphaUVs[0]=vtx[1].m_AlphaUVs[0];
dst.m_AlphaUVs[1]=vtx[1].m_AlphaUVs[1];
dst.m_LOSColor=vtx1.m_LOSColor;
dst.m_Position=vtx1.m_Position;
m_BlendVertices.push_back(dst);
m_BlendVertexIndices.push_back((j*vsize)+i+1);
const SBaseVertex& vtx2=m_Vertices[((j+1)*vsize)+i+1];
CalculateUV(dst.m_UVs, gx+1, gz+1);
dst.m_AlphaUVs[0]=vtx[2].m_AlphaUVs[0];
dst.m_AlphaUVs[1]=vtx[2].m_AlphaUVs[1];
dst.m_LOSColor=vtx2.m_LOSColor;
dst.m_Position=vtx2.m_Position;
m_BlendVertices.push_back(dst);
m_BlendVertexIndices.push_back(((j+1)*vsize)+i+1);
const SBaseVertex& vtx3=m_Vertices[((j+1)*vsize)+i];
CalculateUV(dst.m_UVs, gx, gz+1);
dst.m_AlphaUVs[0]=vtx[3].m_AlphaUVs[0];
dst.m_AlphaUVs[1]=vtx[3].m_AlphaUVs[1];
dst.m_LOSColor=vtx3.m_LOSColor;
dst.m_Position=vtx3.m_Position;
m_BlendVertices.push_back(dst);
m_BlendVertexIndices.push_back(((j+1)*vsize)+i);
// build a splat for this quad
STmpSplat splat;
splat.m_Texture=neighbourTextures[k].m_Handle;
splat.m_Indices[0]=(u16)(vindex);
splat.m_Indices[1]=(u16)(vindex+1);
splat.m_Indices[2]=(u16)(vindex+2);
splat.m_Indices[3]=(u16)(vindex+3);
splats.push_back(splat);
// add this texture to set of unique splat textures
splatTextures.insert(splat.m_Texture);
}
}
}
}
}
// build vertex data
if (m_VBBlends) {
// release existing vertex buffer chunk
g_VBMan.Release(m_VBBlends);
m_VBBlends=0;
}
if (m_BlendVertices.size()) {
m_VBBlends=g_VBMan.Allocate(sizeof(SBlendVertex),m_BlendVertices.size(),true);
m_VBBlends->m_Owner->UpdateChunkVertices(m_VBBlends,&m_BlendVertices[0]);
// now build outgoing splats
m_BlendSplats.resize(splatTextures.size());
size_t splatCount=0;
debug_assert(m_VBBlends->m_Index < 65536);
unsigned short base = (unsigned short)m_VBBlends->m_Index;
std::set<Handle>::iterator iter=splatTextures.begin();
for (;iter!=splatTextures.end();++iter) {
Handle tex=*iter;
SSplat& splat=m_BlendSplats[splatCount];
splat.m_IndexStart=m_BlendIndices.size();
splat.m_Texture=tex;
for (size_t k=0;k<splats.size();k++) {
if (splats[k].m_Texture==tex) {
m_BlendIndices.push_back(splats[k].m_Indices[0]+base);
m_BlendIndices.push_back(splats[k].m_Indices[1]+base);
m_BlendIndices.push_back(splats[k].m_Indices[2]+base);
m_BlendIndices.push_back(splats[k].m_Indices[3]+base);
splat.m_IndexCount+=4;
}
}
splatCount++;
}
}
}
void CPatchRData::BuildIndices()
{
// must have allocated some vertices before trying to build corresponding indices
debug_assert(m_VBBase);
// number of vertices in each direction in each patch
ssize_t vsize=PATCH_SIZE+1;
// release existing indices and bins
m_Indices.clear();
m_ShadowMapIndices.clear();
m_Splats.clear();
// build grid of textures on this patch and boundaries of adjacent patches
std::vector<Handle> textures;
Handle texgrid[PATCH_SIZE][PATCH_SIZE];
for (ssize_t j=0;j<PATCH_SIZE;j++) {
for (ssize_t i=0;i<PATCH_SIZE;i++) {
Handle h=m_Patch->m_MiniPatches[j][i].Tex1;
texgrid[j][i]=h;
if (std::find(textures.begin(),textures.end(),h)==textures.end()) {
textures.push_back(h);
}
}
}
// now build base splats from interior textures
m_Splats.resize(textures.size());
// build indices for base splats
size_t base=m_VBBase->m_Index;
for (size_t i=0;i<m_Splats.size();i++) {
Handle h=textures[i];
SSplat& splat=m_Splats[i];
splat.m_Texture=h;
splat.m_IndexStart=m_Indices.size();
for (ssize_t j=0;j<PATCH_SIZE;j++) {
for (ssize_t i=0;i<PATCH_SIZE;i++) {
if (texgrid[j][i]==h){
m_Indices.push_back(u16(((j+0)*vsize+(i+0))+base));
m_Indices.push_back(u16(((j+0)*vsize+(i+1))+base));
m_Indices.push_back(u16(((j+1)*vsize+(i+1))+base));
m_Indices.push_back(u16(((j+1)*vsize+(i+0))+base));
}
}
}
splat.m_IndexCount=m_Indices.size()-splat.m_IndexStart;
}
// build indices for the shadow map pass
for (ssize_t j=0;j<PATCH_SIZE;j++) {
for (ssize_t i=0;i<PATCH_SIZE;i++) {
m_ShadowMapIndices.push_back(u16(((j+0)*vsize+(i+0))+base));
m_ShadowMapIndices.push_back(u16(((j+0)*vsize+(i+1))+base));
m_ShadowMapIndices.push_back(u16(((j+1)*vsize+(i+1))+base));
m_ShadowMapIndices.push_back(u16(((j+1)*vsize+(i+0))+base));
}
}
}
void CPatchRData::BuildVertices()
{
// create both vertices and lighting colors
CVector3D normal;
// number of vertices in each direction in each patch
ssize_t vsize=PATCH_SIZE+1;
if (!m_Vertices) {
m_Vertices=new SBaseVertex[vsize*vsize];
}
SBaseVertex* vertices=m_Vertices;
// get index of this patch
ssize_t px=m_Patch->m_X;
ssize_t pz=m_Patch->m_Z;
CTerrain* terrain=m_Patch->m_Parent;
const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
// build vertices
for (ssize_t j=0;j<vsize;j++) {
for (ssize_t i=0;i<vsize;i++) {
ssize_t ix=px*PATCH_SIZE+i;
ssize_t iz=pz*PATCH_SIZE+j;
ssize_t v=(j*vsize)+i;
// calculate vertex data
terrain->CalcPosition(ix,iz,vertices[v].m_Position);
vertices[v].m_LOSColor = SColor4ub(0, 0, 0, 0); // will be set to the proper value in Update()
CalculateUV(vertices[v].m_UVs, ix, iz);
// Calculate diffuse lighting for this vertex
// Ambient is added by the lighting pass (since ambient is the same
// for all vertices, it need not be stored in the vertex structure)
terrain->CalcNormal(ix,iz,normal);
RGBColor diffuse;
lightEnv.EvaluateDirect(normal, diffuse);
vertices[v].m_DiffuseColor = ConvertRGBColorTo4ub(diffuse);
}
}
// upload to vertex buffer
if (!m_VBBase) {
m_VBBase=g_VBMan.Allocate(sizeof(SBaseVertex),vsize*vsize,true);
}
m_VBBase->m_Owner->UpdateChunkVertices(m_VBBase,m_Vertices);
}
void CPatchRData::Build()
{
BuildVertices();
BuildIndices();
BuildBlends();
}
void CPatchRData::Update()
{
if (m_UpdateFlags!=0) {
// TODO,RC 11/04/04 - need to only rebuild necessary bits of renderdata rather
// than everything; it's complicated slightly because the blends are dependent
// on both vertex and index data
BuildVertices();
BuildIndices();
BuildBlends();
m_UpdateFlags=0;
}
// Update vertex colors, which are affected by LOS
ssize_t px=m_Patch->m_X;
ssize_t pz=m_Patch->m_Z;
CTerrain* terrain=m_Patch->m_Parent;
ssize_t mapSize=terrain->GetVerticesPerSide();
ssize_t vsize=PATCH_SIZE+1;
SColor4ub baseColour = terrain->GetBaseColour();
if (g_Game && !g_UseSimulation2)
{
CLOSManager* losMgr = g_Game->GetWorld()->GetLOSManager();
// this is very similar to BuildVertices(), but just for color
for (ssize_t j=0;j<vsize;j++) {
for (ssize_t i=0;i<vsize;i++) {
ssize_t ix=px*PATCH_SIZE+i;
ssize_t iz=pz*PATCH_SIZE+j;
ssize_t v=(j*vsize)+i;
const ssize_t DX[] = {1,1,0,0};
const ssize_t DZ[] = {0,1,1,0};
SColor4ub losMod = baseColour;
for(size_t k=0; k<4; k++)
{
ssize_t tx = ix - DX[k];
ssize_t tz = iz - DZ[k];
if(tx >= 0 && tz >= 0 && tx <= mapSize-2 && tz <= mapSize-2)
{
ELOSStatus s = losMgr->GetStatus(tx, tz, g_Game->GetLocalPlayer());
if(s==LOS_EXPLORED && losMod.R > 178)
losMod = SColor4ub(178, 178, 178, 255);
else if(s==LOS_UNEXPLORED && losMod.R > 0)
losMod = SColor4ub(0, 0, 0, 255);
}
}
m_Vertices[v].m_LOSColor = losMod;
}
}
}
else
{
for (ssize_t j = 0; j < vsize; ++j)
{
for (ssize_t i = 0; i < vsize; ++i)
{
ssize_t v = (j*vsize)+i;
m_Vertices[v].m_LOSColor = baseColour;
}
}
}
// upload base vertices into their vertex buffer
m_VBBase->m_Owner->UpdateChunkVertices(m_VBBase,m_Vertices);
// update blend colors by copying them from vertex colors
for(size_t i=0; i<m_BlendVertices.size(); i++)
{
m_BlendVertices[i].m_LOSColor = m_Vertices[m_BlendVertexIndices[i]].m_LOSColor;
}
// upload blend vertices into their vertex buffer too
if(m_BlendVertices.size())
{
m_VBBlends->m_Owner->UpdateChunkVertices(m_VBBlends,&m_BlendVertices[0]);
}
}
void CPatchRData::RenderBase(bool losColor)
{
debug_assert(m_UpdateFlags==0);
SBaseVertex *base=(SBaseVertex *)m_VBBase->m_Owner->Bind();
// setup data pointers
GLsizei stride=sizeof(SBaseVertex);
glVertexPointer(3,GL_FLOAT,stride,&base->m_Position[0]);
glColorPointer(4,GL_UNSIGNED_BYTE,stride,losColor ? &base->m_LOSColor : &base->m_DiffuseColor);
glTexCoordPointer(2,GL_FLOAT,stride,&base->m_UVs[0]);
// render each splat
for (size_t i=0;i<m_Splats.size();i++) {
SSplat& splat=m_Splats[i];
ogl_tex_bind(splat.m_Texture);
if (!g_Renderer.m_SkipSubmit) {
glDrawElements(GL_QUADS, (GLsizei)splat.m_IndexCount,
GL_UNSIGNED_SHORT, &m_Indices[splat.m_IndexStart]);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_TerrainTris+=splat.m_IndexCount/2;
}
}
void CPatchRData::RenderStreams(int streamflags, bool losColor)
{
debug_assert(m_UpdateFlags==0);
SBaseVertex* base=(SBaseVertex *)m_VBBase->m_Owner->Bind();
// setup data pointers
GLsizei stride=sizeof(SBaseVertex);
glVertexPointer(3, GL_FLOAT, stride, &base->m_Position);
if (streamflags & STREAM_UV0) {
glTexCoordPointer(2, GL_FLOAT, stride, &base->m_UVs);
} else if (streamflags & STREAM_POSTOUV0) {
glTexCoordPointer(3, GL_FLOAT, stride, &base->m_Position);
}
if (streamflags & STREAM_COLOR)
{
glColorPointer(4,GL_UNSIGNED_BYTE,stride,losColor ? &base->m_LOSColor : &base->m_DiffuseColor);
}
// render all base splats at once
if (!g_Renderer.m_SkipSubmit) {
glDrawElements(GL_QUADS,(GLsizei)m_Indices.size(),GL_UNSIGNED_SHORT,&m_Indices[0]);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_TerrainTris+=m_Indices.size()/2;
}
void CPatchRData::RenderBlends()
{
debug_assert(m_UpdateFlags==0);
if (m_BlendVertices.size()==0) return;
u8* base=m_VBBlends->m_Owner->Bind();
// setup data pointers
GLsizei stride=sizeof(SBlendVertex);
// ((GCC warns about offsetof: SBlendVertex contains a CVector3D which has
// a constructor, and so is not a POD type, and so offsetof is theoretically
// invalid - see http://gcc.gnu.org/ml/gcc/2003-11/msg00281.html - but it
// doesn't seem to be worth changing this code since it works anyway.))
glVertexPointer(3,GL_FLOAT,stride,base+offsetof(SBlendVertex,m_Position));
glColorPointer(4,GL_UNSIGNED_BYTE,stride,base+offsetof(SBlendVertex,m_LOSColor));
pglClientActiveTextureARB(GL_TEXTURE0);
glTexCoordPointer(2,GL_FLOAT,stride,base+offsetof(SBlendVertex,m_UVs[0]));
pglClientActiveTextureARB(GL_TEXTURE1);
glTexCoordPointer(2,GL_FLOAT,stride,base+offsetof(SBlendVertex,m_AlphaUVs[0]));
for (size_t i=0;i<m_BlendSplats.size();i++) {
SSplat& splat=m_BlendSplats[i];
ogl_tex_bind(splat.m_Texture);
if (!g_Renderer.m_SkipSubmit) {
glDrawElements(GL_QUADS, (GLsizei)splat.m_IndexCount,
GL_UNSIGNED_SHORT, &m_BlendIndices[splat.m_IndexStart]);
}
// bump stats
g_Renderer.m_Stats.m_DrawCalls++;
g_Renderer.m_Stats.m_BlendSplats++;
g_Renderer.m_Stats.m_TerrainTris+=splat.m_IndexCount/2;
}
}
void CPatchRData::RenderOutline()
{
size_t vsize=PATCH_SIZE+1;
glBegin(GL_LINES);
for (ssize_t i=0;i<PATCH_SIZE;i++) {
glVertex3fv(&m_Vertices[i].m_Position.X);
glVertex3fv(&m_Vertices[i+1].m_Position.X);
}
glEnd();
glBegin(GL_LINES);
for (ssize_t i=0;i<PATCH_SIZE;i++) {
glVertex3fv(&m_Vertices[PATCH_SIZE+(i*(PATCH_SIZE+1))].m_Position.X);
glVertex3fv(&m_Vertices[PATCH_SIZE+((i+1)*(PATCH_SIZE+1))].m_Position.X);
}
glEnd();
glBegin(GL_LINES);
for (ssize_t i=1;i<PATCH_SIZE;i++) {
glVertex3fv(&m_Vertices[(vsize*vsize)-i].m_Position.X);
glVertex3fv(&m_Vertices[(vsize*vsize)-(i+1)].m_Position.X);
}
glEnd();
glBegin(GL_LINES);
for (ssize_t i=1;i<PATCH_SIZE;i++) {
glVertex3fv(&m_Vertices[(vsize*(vsize-1))-(i*vsize)].m_Position.X);
glVertex3fv(&m_Vertices[(vsize*(vsize-1))-((i+1)*vsize)].m_Position.X);
}
glEnd();
}
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