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0ad/source/renderer/Renderer.cpp

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/* Copyright (C) 2011 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/>.
*/
/*
* higher level interface on top of OpenGL to render basic objects:
* terrain, models, sprites, particles etc.
*/
#include "precompiled.h"
#include <map>
#include <set>
#include <algorithm>
#include <boost/algorithm/string.hpp>
#include "Renderer.h"
#include "lib/bits.h" // is_pow2
#include "lib/res/graphics/ogl_tex.h"
#include "lib/allocators/shared_ptr.h"
#include "maths/Matrix3D.h"
#include "maths/MathUtil.h"
#include "ps/CLogger.h"
#include "ps/Game.h"
#include "ps/Profile.h"
#include "ps/Filesystem.h"
#include "ps/World.h"
#include "ps/Loader.h"
#include "ps/ProfileViewer.h"
#include "graphics/Camera.h"
#include "graphics/GameView.h"
#include "graphics/LightEnv.h"
#include "graphics/Model.h"
#include "graphics/ModelDef.h"
#include "graphics/ParticleManager.h"
#include "graphics/ShaderManager.h"
#include "graphics/ShaderTechnique.h"
#include "graphics/Terrain.h"
#include "graphics/Texture.h"
#include "graphics/TextureManager.h"
#include "renderer/FixedFunctionModelRenderer.h"
#include "renderer/HWLightingModelRenderer.h"
#include "renderer/InstancingModelRenderer.h"
#include "renderer/ModelRenderer.h"
#include "renderer/OverlayRenderer.h"
#include "renderer/ParticleRenderer.h"
#include "renderer/PlayerRenderer.h"
#include "renderer/RenderModifiers.h"
#include "renderer/ShadowMap.h"
#include "renderer/SkyManager.h"
#include "renderer/TerrainOverlay.h"
#include "renderer/TerrainRenderer.h"
#include "renderer/TransparencyRenderer.h"
#include "renderer/VertexBufferManager.h"
#include "renderer/WaterManager.h"
///////////////////////////////////////////////////////////////////////////////////
// CRendererStatsTable - Profile display of rendering stats
/**
* Class CRendererStatsTable: Implementation of AbstractProfileTable to
* display the renderer stats in-game.
*
* Accesses CRenderer::m_Stats by keeping the reference passed to the
* constructor.
*/
class CRendererStatsTable : public AbstractProfileTable
{
NONCOPYABLE(CRendererStatsTable);
public:
CRendererStatsTable(const CRenderer::Stats& st);
// Implementation of AbstractProfileTable interface
CStr GetName();
CStr GetTitle();
size_t GetNumberRows();
const std::vector<ProfileColumn>& GetColumns();
CStr GetCellText(size_t row, size_t col);
AbstractProfileTable* GetChild(size_t row);
private:
/// Reference to the renderer singleton's stats
const CRenderer::Stats& Stats;
/// Column descriptions
std::vector<ProfileColumn> columnDescriptions;
enum {
Row_DrawCalls = 0,
Row_TerrainTris,
Row_WaterTris,
Row_ModelTris,
Row_BlendSplats,
Row_Particles,
Row_VBReserved,
Row_VBAllocated,
// Must be last to count number of rows
NumberRows
};
};
// Construction
CRendererStatsTable::CRendererStatsTable(const CRenderer::Stats& st)
: Stats(st)
{
columnDescriptions.push_back(ProfileColumn("Name", 230));
columnDescriptions.push_back(ProfileColumn("Value", 100));
}
// Implementation of AbstractProfileTable interface
CStr CRendererStatsTable::GetName()
{
return "renderer";
}
CStr CRendererStatsTable::GetTitle()
{
return "Renderer statistics";
}
size_t CRendererStatsTable::GetNumberRows()
{
return NumberRows;
}
const std::vector<ProfileColumn>& CRendererStatsTable::GetColumns()
{
return columnDescriptions;
}
CStr CRendererStatsTable::GetCellText(size_t row, size_t col)
{
char buf[256];
switch(row)
{
case Row_DrawCalls:
if (col == 0)
return "# draw calls";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_DrawCalls);
return buf;
case Row_TerrainTris:
if (col == 0)
return "# terrain tris";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_TerrainTris);
return buf;
case Row_WaterTris:
if (col == 0)
return "# water tris";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_WaterTris);
return buf;
case Row_ModelTris:
if (col == 0)
return "# model tris";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_ModelTris);
return buf;
case Row_BlendSplats:
if (col == 0)
return "# blend splats";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_BlendSplats);
return buf;
case Row_Particles:
if (col == 0)
return "# particles";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)Stats.m_Particles);
return buf;
case Row_VBReserved:
if (col == 0)
return "VB bytes reserved";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)g_VBMan.GetBytesReserved());
return buf;
case Row_VBAllocated:
if (col == 0)
return "VB bytes allocated";
sprintf_s(buf, sizeof(buf), "%lu", (unsigned long)g_VBMan.GetBytesAllocated());
return buf;
default:
return "???";
}
}
AbstractProfileTable* CRendererStatsTable::GetChild(size_t UNUSED(row))
{
return 0;
}
///////////////////////////////////////////////////////////////////////////////////
// CRenderer implementation
/**
* Struct CRendererInternals: Truly hide data that is supposed to be hidden
* in this structure so it won't even appear in header files.
*/
struct CRendererInternals
{
NONCOPYABLE(CRendererInternals);
public:
/// true if CRenderer::Open has been called
bool IsOpen;
/// true if shaders need to be reloaded
bool ShadersDirty;
/// Table to display renderer stats in-game via profile system
CRendererStatsTable profileTable;
/// Shader manager
CShaderManager shaderManager;
/// Water manager
WaterManager waterManager;
/// Sky manager
SkyManager skyManager;
/// Texture manager
CTextureManager textureManager;
/// Terrain renderer
TerrainRenderer* terrainRenderer;
/// Overlay renderer
OverlayRenderer overlayRenderer;
/// Particle manager
CParticleManager particleManager;
/// Particle renderer
ParticleRenderer particleRenderer;
/// Shadow map
ShadowMap* shadow;
/// Various model renderers
struct Models {
// The following model renderers are aliases for the appropriate real_*
// model renderers (depending on hardware availability and current settings)
// and must be used for actual model submission and rendering
ModelRenderer* Normal;
ModelRenderer* NormalInstancing;
ModelRenderer* Player;
ModelRenderer* PlayerInstancing;
ModelRenderer* Transp;
// "Palette" of available ModelRenderers. Do not use these directly for
// rendering and submission; use the aliases above instead.
ModelRenderer* pal_NormalFF;
ModelRenderer* pal_PlayerFF;
ModelRenderer* pal_TranspFF;
ModelRenderer* pal_TranspSortAll;
ModelRenderer* pal_NormalShader;
ModelRenderer* pal_NormalInstancingShader;
ModelRenderer* pal_PlayerShader;
ModelRenderer* pal_PlayerInstancingShader;
ModelRenderer* pal_TranspShader;
ModelVertexRendererPtr VertexFF;
ModelVertexRendererPtr VertexPolygonSort;
ModelVertexRendererPtr VertexRendererShader;
ModelVertexRendererPtr VertexInstancingShader;
// generic RenderModifiers that are supposed to be used directly
RenderModifierPtr ModWireframe;
RenderModifierPtr ModSolidColor;
RenderModifierPtr ModSolidPlayerColor;
RenderModifierPtr ModTransparentDepthShadow;
// RenderModifiers that are selected from the palette below
RenderModifierPtr ModNormal;
RenderModifierPtr ModNormalInstancing;
RenderModifierPtr ModPlayer;
RenderModifierPtr ModPlayerInstancing;
RenderModifierPtr ModSolid;
RenderModifierPtr ModSolidInstancing;
RenderModifierPtr ModSolidPlayer;
RenderModifierPtr ModSolidPlayerInstancing;
RenderModifierPtr ModTransparent;
RenderModifierPtr ModTransparentOpaque;
RenderModifierPtr ModTransparentBlend;
// Palette of available RenderModifiers
RenderModifierPtr ModPlainUnlit;
RenderModifierPtr ModPlayerUnlit;
RenderModifierPtr ModTransparentUnlit;
RenderModifierPtr ModTransparentOpaqueUnlit;
RenderModifierPtr ModTransparentBlendUnlit;
RenderModifierPtr ModShaderSolidColor;
RenderModifierPtr ModShaderSolidColorInstancing;
RenderModifierPtr ModShaderSolidPlayerColor;
RenderModifierPtr ModShaderSolidPlayerColorInstancing;
RenderModifierPtr ModShaderSolidTex;
LitRenderModifierPtr ModShaderNormal;
LitRenderModifierPtr ModShaderNormalInstancing;
LitRenderModifierPtr ModShaderPlayer;
LitRenderModifierPtr ModShaderPlayerInstancing;
LitRenderModifierPtr ModShaderTransparent;
LitRenderModifierPtr ModShaderTransparentOpaque;
LitRenderModifierPtr ModShaderTransparentBlend;
RenderModifierPtr ModShaderTransparentShadow;
} Model;
CRendererInternals() :
IsOpen(false), ShadersDirty(true), profileTable(g_Renderer.m_Stats), textureManager(g_VFS, false, false)
{
terrainRenderer = new TerrainRenderer();
shadow = new ShadowMap();
Model.pal_NormalFF = 0;
Model.pal_PlayerFF = 0;
Model.pal_TranspFF = 0;
Model.pal_TranspSortAll = 0;
Model.pal_NormalShader = 0;
Model.pal_NormalInstancingShader = 0;
Model.pal_PlayerShader = 0;
Model.pal_PlayerInstancingShader = 0;
Model.pal_TranspShader = 0;
Model.Normal = 0;
Model.NormalInstancing = 0;
Model.Player = 0;
Model.PlayerInstancing = 0;
Model.Transp = 0;
}
~CRendererInternals()
{
delete shadow;
delete terrainRenderer;
}
/**
* Load the OpenGL projection and modelview matrices and the viewport according
* to the given camera.
*/
void SetOpenGLCamera(const CCamera& camera)
{
CMatrix3D view;
camera.m_Orientation.GetInverse(view);
const CMatrix3D& proj = camera.GetProjection();
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(&proj._11);
glMatrixMode(GL_MODELVIEW);
glLoadMatrixf(&view._11);
const SViewPort &vp = camera.GetViewPort();
glViewport((GLint)vp.m_X,(GLint)vp.m_Y,(GLsizei)vp.m_Width,(GLsizei)vp.m_Height);
}
/**
* Renders all non-transparent models with the given modifiers.
*/
void CallModelRenderers(
const RenderModifierPtr& modNormal, const RenderModifierPtr& modNormalInstancing,
const RenderModifierPtr& modPlayer, const RenderModifierPtr& modPlayerInstancing,
int flags)
{
Model.Normal->Render(modNormal, flags);
if (Model.Normal != Model.NormalInstancing)
Model.NormalInstancing->Render(modNormalInstancing, flags);
Model.Player->Render(modPlayer, flags);
if (Model.Player != Model.PlayerInstancing)
Model.PlayerInstancing->Render(modPlayerInstancing, flags);
}
/**
* Filters all non-transparent models with the given modifiers.
*/
void FilterModels(CModelFilter& filter, int passed, int flags = 0)
{
Model.Normal->Filter(filter, passed, flags);
if (Model.Normal != Model.NormalInstancing)
Model.NormalInstancing->Filter(filter, passed, flags);
Model.Player->Filter(filter, passed, flags);
if (Model.Player != Model.PlayerInstancing)
Model.PlayerInstancing->Filter(filter, passed, flags);
}
};
///////////////////////////////////////////////////////////////////////////////////
// CRenderer constructor
CRenderer::CRenderer()
{
m = new CRendererInternals;
m_WaterManager = &m->waterManager;
m_SkyManager = &m->skyManager;
g_ProfileViewer.AddRootTable(&m->profileTable);
m_Width=0;
m_Height=0;
m_TerrainRenderMode=SOLID;
m_ModelRenderMode=SOLID;
m_ClearColor[0]=m_ClearColor[1]=m_ClearColor[2]=m_ClearColor[3]=0;
m_SortAllTransparent = false;
m_DisplayFrustum = false;
m_DisableCopyShadow = false;
m_DisplayTerrainPriorities = false;
m_FastPlayerColor = true;
m_SkipSubmit = false;
m_Options.m_NoVBO = false;
m_Options.m_RenderPath = RP_DEFAULT;
m_Options.m_FancyWater = false;
m_Options.m_Shadows = false;
m_Options.m_ShadowAlphaFix = true;
m_Options.m_ARBProgramShadow = true;
m_Options.m_ShadowPCF = false;
m_ShadowZBias = 0.02f;
m_ShadowMapSize = 0;
m_LightEnv = NULL;
m_CurrentScene = NULL;
m_hCompositeAlphaMap = 0;
AddLocalProperty(L"fancyWater", &m_Options.m_FancyWater, false);
AddLocalProperty(L"horizonHeight", &m->skyManager.m_HorizonHeight, false);
AddLocalProperty(L"waterMurkiness", &m->waterManager.m_Murkiness, false);
AddLocalProperty(L"waterReflTintStrength", &m->waterManager.m_ReflectionTintStrength, false);
AddLocalProperty(L"waterRepeatPeriod", &m->waterManager.m_RepeatPeriod, false);
AddLocalProperty(L"waterShininess", &m->waterManager.m_Shininess, false);
AddLocalProperty(L"waterSpecularStrength", &m->waterManager.m_SpecularStrength, false);
AddLocalProperty(L"waterWaviness", &m->waterManager.m_Waviness, false);
RegisterFileReloadFunc(ReloadChangedFileCB, this);
}
///////////////////////////////////////////////////////////////////////////////////
// CRenderer destructor
CRenderer::~CRenderer()
{
UnregisterFileReloadFunc(ReloadChangedFileCB, this);
// model rendering
delete m->Model.pal_NormalFF;
delete m->Model.pal_PlayerFF;
delete m->Model.pal_TranspFF;
delete m->Model.pal_TranspSortAll;
delete m->Model.pal_NormalShader;
delete m->Model.pal_NormalInstancingShader;
delete m->Model.pal_PlayerShader;
delete m->Model.pal_PlayerInstancingShader;
delete m->Model.pal_TranspShader;
// we no longer UnloadAlphaMaps / UnloadWaterTextures here -
// that is the responsibility of the module that asked for
// them to be loaded (i.e. CGameView).
delete m;
}
///////////////////////////////////////////////////////////////////////////////////
// EnumCaps: build card cap bits
void CRenderer::EnumCaps()
{
// assume support for nothing
m_Caps.m_VBO = false;
m_Caps.m_ARBProgram = false;
m_Caps.m_ARBProgramShadow = false;
m_Caps.m_VertexShader = false;
m_Caps.m_FragmentShader = false;
m_Caps.m_Shadows = false;
// now start querying extensions
if (!m_Options.m_NoVBO) {
if (ogl_HaveExtension("GL_ARB_vertex_buffer_object")) {
m_Caps.m_VBO=true;
}
}
if (0 == ogl_HaveExtensions(0, "GL_ARB_vertex_program", "GL_ARB_fragment_program", NULL))
{
m_Caps.m_ARBProgram = true;
if (ogl_HaveExtension("GL_ARB_fragment_program_shadow"))
m_Caps.m_ARBProgramShadow = true;
}
if (0 == ogl_HaveExtensions(0, "GL_ARB_shader_objects", "GL_ARB_shading_language_100", NULL))
{
if (ogl_HaveExtension("GL_ARB_vertex_shader"))
m_Caps.m_VertexShader = true;
if (ogl_HaveExtension("GL_ARB_fragment_shader"))
m_Caps.m_FragmentShader = true;
}
if (0 == ogl_HaveExtensions(0, "GL_ARB_shadow", "GL_ARB_depth_texture", "GL_EXT_framebuffer_object", NULL))
{
if (ogl_max_tex_units >= 4)
m_Caps.m_Shadows = true;
}
}
void CRenderer::ReloadShaders()
{
ENSURE(m->IsOpen);
typedef std::map<CStr, CStr> Defines;
Defines defNull;
Defines defBasic;
if (m_Options.m_Shadows)
{
defBasic["USE_SHADOW"] = "1";
if (m_Caps.m_ARBProgramShadow && m_Options.m_ARBProgramShadow)
defBasic["USE_FP_SHADOW"] = "1";
if (m_Options.m_ShadowPCF)
defBasic["USE_SHADOW_PCF"] = "1";
}
if (m_LightEnv)
defBasic["LIGHTING_MODEL_" + m_LightEnv->GetLightingModel()] = "1";
Defines defColored = defBasic;
defColored["USE_OBJECTCOLOR"] = "1";
Defines defTransparent = defBasic;
defTransparent["USE_TRANSPARENT"] = "1";
// TODO: it'd be nicer to load this technique from an XML file or something
CShaderPass passTransparentOpaque(m->shaderManager.LoadProgram("model_common", defTransparent));
passTransparentOpaque.AlphaFunc(GL_GREATER, 0.9375f);
passTransparentOpaque.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
CShaderTechnique techTransparentOpaque(passTransparentOpaque);
CShaderPass passTransparentBlend(m->shaderManager.LoadProgram("model_common", defTransparent));
passTransparentBlend.AlphaFunc(GL_GREATER, 0.0f);
passTransparentBlend.DepthFunc(GL_LESS);
passTransparentBlend.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
passTransparentBlend.DepthMask(0);
CShaderTechnique techTransparentBlend(passTransparentBlend);
CShaderTechnique techTransparent(passTransparentOpaque);
techTransparent.AddPass(passTransparentBlend);
CShaderPass passTransparentShadow(m->shaderManager.LoadProgram("solid_tex", defBasic));
passTransparentShadow.AlphaFunc(GL_GREATER, 0.4f);
CShaderTechnique techTransparentShadow(passTransparentShadow);
m->Model.ModShaderSolidColor = RenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"solid", defNull))));
m->Model.ModShaderSolidColorInstancing = RenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"solid_instancing", defNull))));
m->Model.ModShaderSolidPlayerColor = RenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"solid_player", defNull))));
m->Model.ModShaderSolidPlayerColorInstancing = RenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"solid_player_instancing", defNull))));
m->Model.ModShaderSolidTex = RenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"solid_tex", defNull))));
m->Model.ModShaderNormal = LitRenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"model_common", defBasic))));
m->Model.ModShaderNormalInstancing = LitRenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"model_common_instancing", defBasic))));
m->Model.ModShaderPlayer = LitRenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"model_common", defColored))));
m->Model.ModShaderPlayerInstancing = LitRenderModifierPtr(new ShaderRenderModifier(CShaderTechnique(m->shaderManager.LoadProgram(
"model_common_instancing", defColored))));
m->Model.ModShaderTransparent = LitRenderModifierPtr(new ShaderRenderModifier(
techTransparent));
m->Model.ModShaderTransparentOpaque = LitRenderModifierPtr(new ShaderRenderModifier(
techTransparentOpaque));
m->Model.ModShaderTransparentBlend = LitRenderModifierPtr(new ShaderRenderModifier(
techTransparentBlend));
m->Model.ModShaderTransparentShadow = LitRenderModifierPtr(new ShaderRenderModifier(
techTransparentShadow));
m->ShadersDirty = false;
}
bool CRenderer::Open(int width, int height)
{
m->IsOpen = true;
// Must query card capabilities before creating renderers that depend
// on card capabilities.
EnumCaps();
// model rendering
m->Model.VertexFF = ModelVertexRendererPtr(new FixedFunctionModelRenderer);
m->Model.VertexPolygonSort = ModelVertexRendererPtr(new PolygonSortModelRenderer);
m->Model.VertexRendererShader = ModelVertexRendererPtr(new ShaderModelRenderer);
m->Model.VertexInstancingShader = ModelVertexRendererPtr(new InstancingModelRenderer);
m->Model.pal_NormalFF = new BatchModelRenderer(m->Model.VertexFF);
m->Model.pal_PlayerFF = new BatchModelRenderer(m->Model.VertexFF);
m->Model.pal_TranspFF = new SortModelRenderer(m->Model.VertexFF);
m->Model.pal_TranspSortAll = new SortModelRenderer(m->Model.VertexPolygonSort);
m->Model.pal_NormalShader = new BatchModelRenderer(m->Model.VertexRendererShader);
m->Model.pal_NormalInstancingShader = new BatchModelRenderer(m->Model.VertexInstancingShader);
m->Model.pal_PlayerShader = new BatchModelRenderer(m->Model.VertexRendererShader);
m->Model.pal_PlayerInstancingShader = new BatchModelRenderer(m->Model.VertexInstancingShader);
m->Model.pal_TranspShader = new SortModelRenderer(m->Model.VertexRendererShader);
m->Model.ModWireframe = RenderModifierPtr(new WireframeRenderModifier);
m->Model.ModPlainUnlit = RenderModifierPtr(new PlainRenderModifier);
SetFastPlayerColor(true);
m->Model.ModSolidColor = RenderModifierPtr(new SolidColorRenderModifier);
m->Model.ModSolidPlayerColor = RenderModifierPtr(new SolidPlayerColorRender);
m->Model.ModTransparentUnlit = RenderModifierPtr(new TransparentRenderModifier);
m->Model.ModTransparentOpaqueUnlit = RenderModifierPtr(new TransparentOpaqueRenderModifier);
m->Model.ModTransparentBlendUnlit = RenderModifierPtr(new TransparentBlendRenderModifier);
m->Model.ModTransparentDepthShadow = RenderModifierPtr(new TransparentDepthShadowModifier);
// Dimensions
m_Width = width;
m_Height = height;
// set packing parameters
glPixelStorei(GL_PACK_ALIGNMENT,1);
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
// setup default state
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
GLint bits;
glGetIntegerv(GL_DEPTH_BITS,&bits);
LOGMESSAGE(L"CRenderer::Open: depth bits %d",bits);
glGetIntegerv(GL_STENCIL_BITS,&bits);
LOGMESSAGE(L"CRenderer::Open: stencil bits %d",bits);
glGetIntegerv(GL_ALPHA_BITS,&bits);
LOGMESSAGE(L"CRenderer::Open: alpha bits %d",bits);
// Validate the currently selected render path
SetRenderPath(m_Options.m_RenderPath);
return true;
}
// resize renderer view
void CRenderer::Resize(int width,int height)
{
// need to recreate the shadow map object to resize the shadow texture
m->shadow->RecreateTexture();
m_Width = width;
m_Height = height;
}
//////////////////////////////////////////////////////////////////////////////////////////
// SetOptionBool: set boolean renderer option
void CRenderer::SetOptionBool(enum Option opt,bool value)
{
switch (opt) {
case OPT_NOVBO:
m_Options.m_NoVBO=value;
break;
case OPT_SHADOWS:
m_Options.m_Shadows=value;
MakeShadersDirty();
break;
case OPT_FANCYWATER:
m_Options.m_FancyWater=value;
break;
case OPT_SHADOWPCF:
m_Options.m_ShadowPCF=value;
break;
default:
debug_warn(L"CRenderer::SetOptionBool: unknown option");
break;
}
}
//////////////////////////////////////////////////////////////////////////////////////////
// GetOptionBool: get boolean renderer option
bool CRenderer::GetOptionBool(enum Option opt) const
{
switch (opt) {
case OPT_NOVBO:
return m_Options.m_NoVBO;
case OPT_SHADOWS:
return m_Options.m_Shadows;
case OPT_FANCYWATER:
return m_Options.m_FancyWater;
case OPT_SHADOWPCF:
return m_Options.m_ShadowPCF;
default:
debug_warn(L"CRenderer::GetOptionBool: unknown option");
break;
}
return false;
}
void CRenderer::SetOptionFloat(enum Option opt, float val)
{
switch(opt)
{
case OPT_LODBIAS:
m_Options.m_LodBias = val;
break;
default:
debug_warn(L"CRenderer::SetOptionFloat: unknown option");
break;
}
}
//////////////////////////////////////////////////////////////////////////////////////////
// SetRenderPath: Select the preferred render path.
// This may only be called before Open(), because the layout of vertex arrays and other
// data may depend on the chosen render path.
void CRenderer::SetRenderPath(RenderPath rp)
{
if (!m->IsOpen)
{
// Delay until Open() is called.
m_Options.m_RenderPath = rp;
return;
}
// Renderer has been opened, so validate the selected renderpath
if (rp == RP_DEFAULT)
{
if (m_Caps.m_ARBProgram)
rp = RP_SHADER;
else
rp = RP_FIXED;
}
if (rp == RP_SHADER)
{
if (!m_Caps.m_ARBProgram)
{
LOGWARNING(L"Falling back to fixed function\n");
rp = RP_FIXED;
}
}
m_Options.m_RenderPath = rp;
// We might need to regenerate some render data after changing path
if (g_Game)
g_Game->GetWorld()->GetTerrain()->MakeDirty(RENDERDATA_UPDATE_COLOR);
}
CStr CRenderer::GetRenderPathName(RenderPath rp)
{
switch(rp) {
case RP_DEFAULT: return "default";
case RP_FIXED: return "fixed";
case RP_SHADER: return "shader";
default: return "(invalid)";
}
}
CRenderer::RenderPath CRenderer::GetRenderPathByName(const CStr& name)
{
if (name == "fixed")
return RP_FIXED;
if (name == "shader")
return RP_SHADER;
if (name == "default")
return RP_DEFAULT;
LOGWARNING(L"Unknown render path name '%hs', assuming 'default'", name.c_str());
return RP_DEFAULT;
}
//////////////////////////////////////////////////////////////////////////////////////////
// SetFastPlayerColor
void CRenderer::SetFastPlayerColor(bool fast)
{
m_FastPlayerColor = fast;
if (m_FastPlayerColor)
{
if (!FastPlayerColorRender::IsAvailable())
{
LOGWARNING(L"Falling back to slower player color rendering.");
m_FastPlayerColor = false;
}
}
if (m_FastPlayerColor)
m->Model.ModPlayerUnlit = RenderModifierPtr(new FastPlayerColorRender);
else
m->Model.ModPlayerUnlit = RenderModifierPtr(new SlowPlayerColorRender);
}
//////////////////////////////////////////////////////////////////////////////////////////
// BeginFrame: signal frame start
void CRenderer::BeginFrame()
{
PROFILE("begin frame");
// zero out all the per-frame stats
m_Stats.Reset();
// choose model renderers for this frame
if (m_Options.m_RenderPath == RP_SHADER)
{
if (m->ShadersDirty)
ReloadShaders();
m->Model.ModShaderNormal->SetShadowMap(m->shadow);
m->Model.ModShaderNormal->SetLightEnv(m_LightEnv);
m->Model.ModShaderNormalInstancing->SetShadowMap(m->shadow);
m->Model.ModShaderNormalInstancing->SetLightEnv(m_LightEnv);
m->Model.ModShaderPlayer->SetShadowMap(m->shadow);
m->Model.ModShaderPlayer->SetLightEnv(m_LightEnv);
m->Model.ModShaderPlayerInstancing->SetShadowMap(m->shadow);
m->Model.ModShaderPlayerInstancing->SetLightEnv(m_LightEnv);
m->Model.ModShaderTransparent->SetShadowMap(m->shadow);
m->Model.ModShaderTransparent->SetLightEnv(m_LightEnv);
m->Model.ModShaderTransparentOpaque->SetShadowMap(m->shadow);
m->Model.ModShaderTransparentOpaque->SetLightEnv(m_LightEnv);
m->Model.ModShaderTransparentBlend->SetShadowMap(m->shadow);
m->Model.ModShaderTransparentBlend->SetLightEnv(m_LightEnv);
m->Model.ModNormal = m->Model.ModShaderNormal;
m->Model.ModNormalInstancing = m->Model.ModShaderNormalInstancing;
m->Model.ModPlayer = m->Model.ModShaderPlayer;
m->Model.ModPlayerInstancing = m->Model.ModShaderPlayerInstancing;
m->Model.ModSolid = m->Model.ModShaderSolidColor;
m->Model.ModSolidInstancing = m->Model.ModShaderSolidColorInstancing;
m->Model.ModSolidPlayer = m->Model.ModShaderSolidPlayerColor;
m->Model.ModSolidPlayerInstancing = m->Model.ModShaderSolidPlayerColorInstancing;
m->Model.ModTransparent = m->Model.ModShaderTransparent;
m->Model.ModTransparentOpaque = m->Model.ModShaderTransparentOpaque;
m->Model.ModTransparentBlend = m->Model.ModShaderTransparentBlend;
m->Model.Normal = m->Model.pal_NormalShader;
m->Model.NormalInstancing = m->Model.pal_NormalInstancingShader;
m->Model.Player = m->Model.pal_PlayerShader;
m->Model.PlayerInstancing = m->Model.pal_PlayerInstancingShader;
m->Model.Transp = m->Model.pal_TranspShader;
}
else
{
m->Model.ModNormal = m->Model.ModPlainUnlit;
m->Model.ModNormalInstancing = m->Model.ModPlainUnlit;
m->Model.ModPlayer = m->Model.ModPlayerUnlit;
m->Model.ModPlayerInstancing = m->Model.ModPlayerUnlit;
m->Model.ModTransparent = m->Model.ModTransparentUnlit;
m->Model.ModTransparentOpaque = m->Model.ModTransparentOpaqueUnlit;
m->Model.ModTransparentBlend = m->Model.ModTransparentBlendUnlit;
m->Model.NormalInstancing = m->Model.pal_NormalFF;
m->Model.Normal = m->Model.pal_NormalFF;
m->Model.PlayerInstancing = m->Model.pal_PlayerFF;
m->Model.Player = m->Model.pal_PlayerFF;
m->Model.ModSolid = m->Model.ModSolidColor;
m->Model.ModSolidInstancing = m->Model.ModSolidColor;
m->Model.ModSolidPlayer = m->Model.ModSolidPlayerColor;
m->Model.ModSolidPlayerInstancing = m->Model.ModSolidPlayerColor;
if (m_SortAllTransparent)
m->Model.Transp = m->Model.pal_TranspSortAll;
else
m->Model.Transp = m->Model.pal_TranspFF;
}
}
//////////////////////////////////////////////////////////////////////////////////////////
// SetClearColor: set color used to clear screen in BeginFrame()
void CRenderer::SetClearColor(SColor4ub color)
{
m_ClearColor[0] = float(color.R) / 255.0f;
m_ClearColor[1] = float(color.G) / 255.0f;
m_ClearColor[2] = float(color.B) / 255.0f;
m_ClearColor[3] = float(color.A) / 255.0f;
}
void CRenderer::RenderShadowMap()
{
PROFILE("render shadow map");
m->shadow->BeginRender();
float shadowTransp = m_LightEnv->GetTerrainShadowTransparency();
glColor3f(shadowTransp, shadowTransp, shadowTransp);
// Figure out transparent rendering strategy
RenderModifierPtr transparentShadows;
if (GetRenderPath() == RP_SHADER)
{
transparentShadows = m->Model.ModShaderTransparentShadow;
}
else
{
transparentShadows = m->Model.ModTransparentDepthShadow;
}
{
PROFILE("render patches");
m->terrainRenderer->RenderPatches();
}
{
PROFILE("render models");
m->CallModelRenderers(m->Model.ModSolid, m->Model.ModSolidInstancing,
m->Model.ModSolid, m->Model.ModSolidInstancing, MODELFLAG_CASTSHADOWS);
}
{
PROFILE("render transparent models");
// disable face-culling for two-sided models
glDisable(GL_CULL_FACE);
m->Model.Transp->Render(transparentShadows, MODELFLAG_CASTSHADOWS);
glEnable(GL_CULL_FACE);
}
glColor3f(1.0, 1.0, 1.0);
m->shadow->EndRender();
}
void CRenderer::RenderPatches(const CFrustum* frustum)
{
PROFILE("render patches");
bool filtered = false;
if (frustum)
{
if (!m->terrainRenderer->CullPatches(frustum))
return;
filtered = true;
}
// switch on wireframe if we need it
if (m_TerrainRenderMode == WIREFRAME)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
// render all the patches, including blend pass
if (GetRenderPath() == RP_SHADER)
m->terrainRenderer->RenderTerrainShader((m_Caps.m_Shadows && m_Options.m_Shadows) ? m->shadow : 0, filtered);
else
m->terrainRenderer->RenderTerrain(filtered);
if (m_TerrainRenderMode == WIREFRAME)
{
// switch wireframe off again
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
else if (m_TerrainRenderMode == EDGED_FACES)
{
// edged faces: need to make a second pass over the data:
// first switch on wireframe
glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
// setup some renderstate ..
glDisable(GL_TEXTURE_2D);
glColor3f(0.5f, 0.5f, 1.0f);
glLineWidth(2.0f);
// render tiles edges
m->terrainRenderer->RenderPatches(filtered);
// set color for outline
glColor3f(0, 0, 1);
glLineWidth(4.0f);
// render outline of each patch
m->terrainRenderer->RenderOutlines(filtered);
// .. and restore the renderstates
glLineWidth(1.0f);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
class CModelCuller : public CModelFilter
{
public:
CModelCuller(const CFrustum& frustum) : m_Frustum(frustum) { }
bool Filter(CModel *model)
{
return m_Frustum.IsBoxVisible(CVector3D(0, 0, 0), model->GetBoundsRec());
}
private:
const CFrustum& m_Frustum;
};
void CRenderer::RenderModels(const CFrustum* frustum)
{
PROFILE("render models");
int flags = 0;
if (frustum)
{
flags = MODELFLAG_FILTERED;
CModelCuller culler(*frustum);
m->FilterModels(culler, flags);
}
if (m_ModelRenderMode == WIREFRAME)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
m->CallModelRenderers(m->Model.ModNormal, m->Model.ModNormalInstancing,
m->Model.ModPlayer, m->Model.ModPlayerInstancing, flags);
if (m_ModelRenderMode == WIREFRAME)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
else if (m_ModelRenderMode == EDGED_FACES)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_TEXTURE_2D);
glColor3f(1.0f, 1.0f, 0.0f);
m->CallModelRenderers(m->Model.ModSolid, m->Model.ModSolidInstancing,
m->Model.ModSolid, m->Model.ModSolidInstancing, flags);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
void CRenderer::RenderTransparentModels(ETransparentMode transparentMode, const CFrustum* frustum)
{
PROFILE("render transparent models");
int flags = 0;
if (frustum)
{
flags = MODELFLAG_FILTERED;
CModelCuller culler(*frustum);
m->Model.Transp->Filter(culler, flags);
}
// switch on wireframe if we need it
if (m_ModelRenderMode == WIREFRAME)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
}
// disable face culling for two-sided models in sub-renders
if (flags)
glDisable(GL_CULL_FACE);
if (transparentMode == TRANSPARENT_OPAQUE)
m->Model.Transp->Render(m->Model.ModTransparentOpaque, flags);
else if (transparentMode == TRANSPARENT_BLEND)
m->Model.Transp->Render(m->Model.ModTransparentBlend, flags);
else
m->Model.Transp->Render(m->Model.ModTransparent, flags);
if (flags)
glEnable(GL_CULL_FACE);
if (m_ModelRenderMode == WIREFRAME)
{
// switch wireframe off again
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
else if (m_ModelRenderMode == EDGED_FACES)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_TEXTURE_2D);
glColor3f(1.0f, 0.0f, 0.0f);
m->Model.Transp->Render(m->Model.ModSolid, flags);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// GetModelViewProjectionMatrix: save the current OpenGL model-view-projection matrix
CMatrix3D CRenderer::GetModelViewProjectionMatrix()
{
CMatrix3D proj;
CMatrix3D view;
glGetFloatv(GL_PROJECTION_MATRIX, &proj._11);
glGetFloatv(GL_MODELVIEW_MATRIX, &view._11);
return proj*view;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// SetObliqueFrustumClipping: change the near plane to the given clip plane (in world space)
// Based on code from Game Programming Gems 5, from http://www.terathon.com/code/oblique.html
// - worldPlane is a clip plane in world space (worldPlane.Dot(v) >= 0 for any vector v passing the clipping test)
void CRenderer::SetObliqueFrustumClipping(const CVector4D& worldPlane)
{
float matrix[16];
CVector4D q;
// First, we'll convert the given clip plane to camera space, then we'll
// Get the view matrix and normal matrix (top 3x3 part of view matrix)
CMatrix3D normalMatrix = m_ViewCamera.m_Orientation.GetTranspose();
CVector4D camPlane = normalMatrix.Transform(worldPlane);
// Grab the current projection matrix from OpenGL
glGetFloatv(GL_PROJECTION_MATRIX, matrix);
// Calculate the clip-space corner point opposite the clipping plane
// as (sgn(camPlane.x), sgn(camPlane.y), 1, 1) and
// transform it into camera space by multiplying it
// by the inverse of the projection matrix
q.m_X = (sgn(camPlane.m_X) - matrix[8]/matrix[11]) / matrix[0];
q.m_Y = (sgn(camPlane.m_Y) - matrix[9]/matrix[11]) / matrix[5];
q.m_Z = 1.0f/matrix[11];
q.m_W = (1.0f - matrix[10]/matrix[11]) / matrix[14];
// Calculate the scaled plane vector
CVector4D c = camPlane * (2.0f * matrix[11] / camPlane.Dot(q));
// Replace the third row of the projection matrix
matrix[2] = c.m_X;
matrix[6] = c.m_Y;
matrix[10] = c.m_Z - matrix[11];
matrix[14] = c.m_W;
// Load it back into OpenGL
glMatrixMode(GL_PROJECTION);
glLoadMatrixf(matrix);
glMatrixMode(GL_MODELVIEW);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// RenderReflections: render the water reflections to the reflection texture
SScreenRect CRenderer::RenderReflections(const CBound& scissor)
{
PROFILE("render reflections");
WaterManager& wm = m->waterManager;
// Remember old camera
CCamera normalCamera = m_ViewCamera;
// Temporarily change the camera to one that is reflected.
// Also, for texturing purposes, make it render to a view port the size of the
// water texture, stretch the image according to our aspect ratio so it covers
// the whole screen despite being rendered into a square, and cover slightly more
// of the view so we can see wavy reflections of slightly off-screen objects.
m_ViewCamera.m_Orientation.Scale(1, -1, 1);
m_ViewCamera.m_Orientation.Translate(0, 2*wm.m_WaterHeight, 0);
m_ViewCamera.UpdateFrustum(scissor);
m_ViewCamera.ClipFrustum(CVector4D(0, 1, 0, -wm.m_WaterHeight));
SViewPort vp;
vp.m_Height = wm.m_ReflectionTextureSize;
vp.m_Width = wm.m_ReflectionTextureSize;
vp.m_X = 0;
vp.m_Y = 0;
m_ViewCamera.SetViewPort(vp);
m_ViewCamera.SetProjection(CGameView::defaultNear, CGameView::defaultFar, CGameView::defaultFOV*1.05f); // Slightly higher than view FOV
CMatrix3D scaleMat;
scaleMat.SetScaling(m_Height/float(std::max(1, m_Width)), 1.0f, 1.0f);
m_ViewCamera.m_ProjMat = scaleMat * m_ViewCamera.m_ProjMat;
m->SetOpenGLCamera(m_ViewCamera);
CVector4D camPlane(0, 1, 0, -wm.m_WaterHeight);
SetObliqueFrustumClipping(camPlane);
// Save the model-view-projection matrix so the shaders can use it for projective texturing
wm.m_ReflectionMatrix = GetModelViewProjectionMatrix();
SScreenRect screenScissor;
screenScissor.x1 = (GLint)floor((scissor[0].X*0.5f+0.5f)*vp.m_Width);
screenScissor.y1 = (GLint)floor((scissor[0].Y*0.5f+0.5f)*vp.m_Height);
screenScissor.x2 = (GLint)ceil((scissor[1].X*0.5f+0.5f)*vp.m_Width);
screenScissor.y2 = (GLint)ceil((scissor[1].Y*0.5f+0.5f)*vp.m_Height);
if (screenScissor.x1 < screenScissor.x2 && screenScissor.y1 < screenScissor.y2)
{
glEnable(GL_SCISSOR_TEST);
glScissor(screenScissor.x1, screenScissor.y1, screenScissor.x2 - screenScissor.x1, screenScissor.y2 - screenScissor.y1);
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glFrontFace(GL_CW);
// Render sky, terrain and models
m->skyManager.RenderSky();
ogl_WarnIfError();
RenderPatches(&m_ViewCamera.GetFrustum());
ogl_WarnIfError();
RenderModels(&m_ViewCamera.GetFrustum());
ogl_WarnIfError();
RenderTransparentModels(TRANSPARENT_BLEND, &m_ViewCamera.GetFrustum());
ogl_WarnIfError();
glFrontFace(GL_CCW);
glDisable(GL_SCISSOR_TEST);
// Copy the image to a texture
pglActiveTextureARB(GL_TEXTURE0_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, wm.m_ReflectionTexture);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
screenScissor.x1, screenScissor.y1,
screenScissor.x1, screenScissor.y1,
screenScissor.x2 - screenScissor.x1, screenScissor.y2 - screenScissor.y1);
}
// Reset old camera
m_ViewCamera = normalCamera;
m->SetOpenGLCamera(m_ViewCamera);
return screenScissor;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// RenderRefractions: render the water refractions to the refraction texture
SScreenRect CRenderer::RenderRefractions(const CBound &scissor)
{
PROFILE("render refractions");
WaterManager& wm = m->waterManager;
// Remember old camera
CCamera normalCamera = m_ViewCamera;
// Temporarily change the camera to make it render to a view port the size of the
// water texture, stretch the image according to our aspect ratio so it covers
// the whole screen despite being rendered into a square, and cover slightly more
// of the view so we can see wavy refractions of slightly off-screen objects.
m_ViewCamera.UpdateFrustum(scissor);
m_ViewCamera.ClipFrustum(CVector4D(0, -1, 0, wm.m_WaterHeight));
SViewPort vp;
vp.m_Height = wm.m_RefractionTextureSize;
vp.m_Width = wm.m_RefractionTextureSize;
vp.m_X = 0;
vp.m_Y = 0;
m_ViewCamera.SetViewPort(vp);
m_ViewCamera.SetProjection(CGameView::defaultNear, CGameView::defaultFar, CGameView::defaultFOV*1.05f); // Slightly higher than view FOV
CMatrix3D scaleMat;
scaleMat.SetScaling(m_Height/float(std::max(1, m_Width)), 1.0f, 1.0f);
m_ViewCamera.m_ProjMat = scaleMat * m_ViewCamera.m_ProjMat;
m->SetOpenGLCamera(m_ViewCamera);
CVector4D camPlane(0, -1, 0, wm.m_WaterHeight);
SetObliqueFrustumClipping(camPlane);
// Save the model-view-projection matrix so the shaders can use it for projective texturing
wm.m_RefractionMatrix = GetModelViewProjectionMatrix();
SScreenRect screenScissor;
screenScissor.x1 = (GLint)floor((scissor[0].X*0.5f+0.5f)*vp.m_Width);
screenScissor.y1 = (GLint)floor((scissor[0].Y*0.5f+0.5f)*vp.m_Height);
screenScissor.x2 = (GLint)ceil((scissor[1].X*0.5f+0.5f)*vp.m_Width);
screenScissor.y2 = (GLint)ceil((scissor[1].Y*0.5f+0.5f)*vp.m_Height);
if (screenScissor.x1 < screenScissor.x2 && screenScissor.y1 < screenScissor.y2)
{
glEnable(GL_SCISSOR_TEST);
glScissor(screenScissor.x1, screenScissor.y1, screenScissor.x2 - screenScissor.x1, screenScissor.y2 - screenScissor.y1);
glClearColor(0.5f, 0.5f, 0.5f, 1.0f); // a neutral gray to blend in with shores
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// Render terrain and models
RenderPatches(&m_ViewCamera.GetFrustum());
ogl_WarnIfError();
RenderModels(&m_ViewCamera.GetFrustum());
ogl_WarnIfError();
RenderTransparentModels(TRANSPARENT_BLEND, &m_ViewCamera.GetFrustum());
ogl_WarnIfError();
glDisable(GL_SCISSOR_TEST);
// Copy the image to a texture
pglActiveTextureARB(GL_TEXTURE0_ARB);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, wm.m_RefractionTexture);
glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
screenScissor.x1, screenScissor.y1,
screenScissor.x1, screenScissor.y1,
screenScissor.x2 - screenScissor.x1, screenScissor.y2 - screenScissor.y1);
}
// Reset old camera
m_ViewCamera = normalCamera;
m->SetOpenGLCamera(m_ViewCamera);
return screenScissor;
}
void CRenderer::RenderSilhouettes()
{
PROFILE("render silhouettes");
// Render silhouettes of units hidden behind terrain or occluders.
// To avoid breaking the standard rendering of alpha-blended objects, this
// has to be done in a separate pass.
// First we render all occluders into depth, then render all units with
// inverted depth test so any behind an occluder will get drawn in a constant
// colour.
float silhouetteAlpha = 0.75f;
// Silhouette blending requires an almost-universally-supported extension;
// fall back to non-blended if unavailable
if (!ogl_HaveExtension("GL_EXT_blend_color"))
silhouetteAlpha = 1.f;
glClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glColorMask(0, 0, 0, 0);
// Render occluders:
{
PROFILE("render patches");
// To prevent units displaying silhouettes when parts of their model
// protrude into the ground, only occlude with the back faces of the
// terrain (so silhouettes will still display when behind hills)
glCullFace(GL_FRONT);
m->terrainRenderer->RenderPatches();
glCullFace(GL_BACK);
}
{
PROFILE("render model occluders");
m->CallModelRenderers(m->Model.ModSolid, m->Model.ModSolidInstancing,
m->Model.ModSolid, m->Model.ModSolidInstancing, MODELFLAG_SILHOUETTE_OCCLUDER);
}
{
PROFILE("render transparent occluders");
if (GetRenderPath() == RP_SHADER)
{
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_GREATER, 0.4f);
m->Model.Transp->Render(m->Model.ModShaderSolidTex, MODELFLAG_SILHOUETTE_OCCLUDER);
glDisable(GL_ALPHA_TEST);
}
else
{
// Reuse the depth shadow modifier to get alpha-tested rendering
m->Model.Transp->Render(m->Model.ModTransparentDepthShadow, MODELFLAG_SILHOUETTE_OCCLUDER);
}
}
glDepthFunc(GL_GEQUAL);
glColorMask(1, 1, 1, 1);
// Render more efficiently if alpha == 1
if (silhouetteAlpha == 1.f)
{
// Ideally we'd render objects back-to-front so nearer silhouettes would
// appear on top, but sorting has non-zero cost. So we'll keep the depth
// write enabled, to do the opposite - far objects will consistently appear
// on top.
glDepthMask(0);
}
else
{
// Since we can't sort, we'll use the stencil buffer to ensure we only draw
// a pixel once (using the colour of whatever model happens to be drawn first).
glEnable(GL_BLEND);
glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA);
pglBlendColorEXT(0, 0, 0, silhouetteAlpha);
glEnable(GL_STENCIL_TEST);
glStencilFunc(GL_NOTEQUAL, 1, (GLuint)-1);
glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
}
// TODO: For performance, we probably ought to do a quick raycasting check
// to see which units are likely blocked by occluders and not bother
// rendering any of the others
{
PROFILE("render models");
m->CallModelRenderers(m->Model.ModSolidPlayer, m->Model.ModSolidPlayerInstancing,
m->Model.ModSolidPlayer, m->Model.ModSolidPlayerInstancing, MODELFLAG_SILHOUETTE_DISPLAY);
// (This won't render transparent objects with SILHOUETTE_DISPLAY - will
// we have any units that need that?)
}
// Restore state
glDepthFunc(GL_LEQUAL);
if (silhouetteAlpha == 1.f)
{
glDepthMask(1);
}
else
{
glDisable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
pglBlendColorEXT(0, 0, 0, 0);
glDisable(GL_STENCIL_TEST);
}
}
void CRenderer::RenderParticles()
{
// Only supported in shader modes
if (GetRenderPath() != RP_SHADER)
return;
PROFILE("render particles");
m->particleRenderer.RenderParticles();
if (m_ModelRenderMode == EDGED_FACES)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glDisable(GL_TEXTURE_2D);
glColor3f(0.0f, 0.5f, 0.0f);
m->particleRenderer.RenderParticles(true);
glDisable(GL_TEXTURE_2D);
glColor3f(0.0f, 1.0f, 0.0f);
m->particleRenderer.RenderBounds();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// RenderSubmissions: force rendering of any batched objects
void CRenderer::RenderSubmissions()
{
PROFILE("render submissions");
ogl_WarnIfError();
// Set the camera
m->SetOpenGLCamera(m_ViewCamera);
// Prepare model renderers
PROFILE_START("prepare models");
m->Model.Normal->PrepareModels();
m->Model.Player->PrepareModels();
if (m->Model.Normal != m->Model.NormalInstancing)
m->Model.NormalInstancing->PrepareModels();
if (m->Model.Player != m->Model.PlayerInstancing)
m->Model.PlayerInstancing->PrepareModels();
m->Model.Transp->PrepareModels();
PROFILE_END("prepare models");
PROFILE_START("prepare terrain");
m->terrainRenderer->PrepareForRendering();
PROFILE_END("prepare terrain");
PROFILE_START("prepare overlays");
m->overlayRenderer.PrepareForRendering();
PROFILE_END("prepare overlays");
PROFILE_START("prepare particles");
m->particleRenderer.PrepareForRendering();
PROFILE_END("prepare particles");
if (m_Caps.m_Shadows && m_Options.m_Shadows && GetRenderPath() == RP_SHADER)
{
RenderShadowMap();
}
// clear buffers
PROFILE_START("clear buffers");
glClearColor(m_ClearColor[0],m_ClearColor[1],m_ClearColor[2],m_ClearColor[3]);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
PROFILE_END("clear buffers");
ogl_WarnIfError();
CBound waterScissor;
if (m_WaterManager->m_RenderWater)
{
waterScissor = m->terrainRenderer->ScissorWater(m_ViewCamera.GetViewProjection());
if (waterScissor.GetVolume() > 0 && m_WaterManager->WillRenderFancyWater())
{
SScreenRect reflectionScissor = RenderReflections(waterScissor);
SScreenRect refractionScissor = RenderRefractions(waterScissor);
SScreenRect dirty;
dirty.x1 = std::min(reflectionScissor.x1, refractionScissor.x1);
dirty.y1 = std::min(reflectionScissor.y1, refractionScissor.y1);
dirty.x2 = std::max(reflectionScissor.x2, refractionScissor.x2);
dirty.y2 = std::max(reflectionScissor.y2, refractionScissor.y2);
if (dirty.x1 < dirty.x2 && dirty.y1 < dirty.y2)
{
glEnable(GL_SCISSOR_TEST);
glScissor(dirty.x1, dirty.y1, dirty.x2 - dirty.x1, dirty.y2 - dirty.y1);
glClearColor(m_ClearColor[0], m_ClearColor[1], m_ClearColor[2], m_ClearColor[3]);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glDisable(GL_SCISSOR_TEST);
}
}
}
// render submitted patches and models
RenderPatches();
ogl_WarnIfError();
if (g_Game)
{
// g_Game->GetWorld()->GetTerritoryManager()->RenderTerritories(); // TODO: implement in new sim system
ogl_WarnIfError();
}
// render debug-related terrain overlays
TerrainOverlay::RenderOverlays();
ogl_WarnIfError();
// render other debug-related overlays before water (so they can be displayed when underwater)
PROFILE_START("render overlays");
m->overlayRenderer.RenderOverlays();
PROFILE_END("render overlays");
ogl_WarnIfError();
RenderModels();
ogl_WarnIfError();
// render water
if (m_WaterManager->m_RenderWater && g_Game && waterScissor.GetVolume() > 0)
{
// render transparent stuff, but only the solid parts that can occlude block water
RenderTransparentModels(TRANSPARENT_OPAQUE);
ogl_WarnIfError();
m->terrainRenderer->RenderWater();
ogl_WarnIfError();
// render transparent stuff again, but only the blended parts that overlap water
RenderTransparentModels(TRANSPARENT_BLEND);
ogl_WarnIfError();
}
else
{
// render transparent stuff, so it can overlap models/terrain
RenderTransparentModels(TRANSPARENT);
ogl_WarnIfError();
}
// particles are transparent so render after water
RenderParticles();
ogl_WarnIfError();
RenderSilhouettes();
// Clean up texture blend mode so particles and other things render OK
// (really this should be cleaned up by whoever set it)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
// render debug lines
if (m_DisplayFrustum)
{
DisplayFrustum();
m->shadow->RenderDebugDisplay();
ogl_WarnIfError();
}
// render overlays that should appear on top of all other objects
PROFILE_START("render fg overlays");
m->overlayRenderer.RenderForegroundOverlays(m_ViewCamera);
PROFILE_END("render fg overlays");
ogl_WarnIfError();
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// EndFrame: signal frame end
void CRenderer::EndFrame()
{
PROFILE("end frame");
// empty lists
m->terrainRenderer->EndFrame();
m->overlayRenderer.EndFrame();
m->particleRenderer.EndFrame();
// Finish model renderers
m->Model.Normal->EndFrame();
m->Model.Player->EndFrame();
if (m->Model.Normal != m->Model.NormalInstancing)
m->Model.NormalInstancing->EndFrame();
if (m->Model.Player != m->Model.PlayerInstancing)
m->Model.PlayerInstancing->EndFrame();
m->Model.Transp->EndFrame();
ogl_tex_bind(0, 0);
if (glGetError())
{
ONCE(LOGERROR(L"CRenderer::EndFrame: GL errors occurred"));
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// DisplayFrustum: debug displays
// - white: cull camera frustum
// - red: bounds of shadow casting objects
void CRenderer::DisplayFrustum()
{
glDepthMask(0);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glColor4ub(255,255,255,64);
m_CullCamera.Render(2);
glDisable(GL_BLEND);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor3ub(255,255,255);
m_CullCamera.Render(2);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_CULL_FACE);
glDepthMask(1);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// Text overlay rendering
void CRenderer::RenderTextOverlays()
{
PROFILE("render text overlays");
if (m_DisplayTerrainPriorities)
m->terrainRenderer->RenderPriorities();
ogl_WarnIfError();
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// SetSceneCamera: setup projection and transform of camera and adjust viewport to current view
// The camera always represents the actual camera used to render a scene, not any virtual camera
// used for shadow rendering or reflections.
void CRenderer::SetSceneCamera(const CCamera& viewCamera, const CCamera& cullCamera)
{
m_ViewCamera = viewCamera;
m_CullCamera = cullCamera;
if (m_Caps.m_Shadows && m_Options.m_Shadows && GetRenderPath() == RP_SHADER)
m->shadow->SetupFrame(m_CullCamera, m_LightEnv->GetSunDir());
}
void CRenderer::SetViewport(const SViewPort &vp)
{
glViewport((GLint)vp.m_X,(GLint)vp.m_Y,(GLsizei)vp.m_Width,(GLsizei)vp.m_Height);
}
void CRenderer::Submit(CPatch* patch)
{
m->terrainRenderer->Submit(patch);
}
void CRenderer::Submit(SOverlayLine* overlay)
{
m->overlayRenderer.Submit(overlay);
}
void CRenderer::Submit(SOverlaySprite* overlay)
{
m->overlayRenderer.Submit(overlay);
}
void CRenderer::Submit(CModelDecal* decal)
{
m->terrainRenderer->Submit(decal);
}
void CRenderer::Submit(CParticleEmitter* emitter)
{
m->particleRenderer.Submit(emitter);
}
void CRenderer::SubmitNonRecursive(CModel* model)
{
if (model->GetFlags() & MODELFLAG_CASTSHADOWS) {
// PROFILE( "updating shadow bounds" );
m->shadow->AddShadowedBound(model->GetBounds());
}
// Tricky: The call to GetBounds() above can invalidate the position
model->ValidatePosition();
bool canUseInstancing = false;
if (model->GetModelDef()->GetNumBones() == 0)
canUseInstancing = true;
if (model->GetMaterial().IsPlayer())
{
if (canUseInstancing)
m->Model.PlayerInstancing->Submit(model);
else
m->Model.Player->Submit(model);
}
else if (model->GetMaterial().UsesAlpha())
{
m->Model.Transp->Submit(model);
}
else
{
if (canUseInstancing)
m->Model.NormalInstancing->Submit(model);
else
m->Model.Normal->Submit(model);
}
}
///////////////////////////////////////////////////////////
// Render the given scene
void CRenderer::RenderScene(Scene& scene)
{
m_CurrentScene = &scene;
CFrustum frustum = m_CullCamera.GetFrustum();
scene.EnumerateObjects(frustum, this);
m->particleManager.RenderSubmit(*this, frustum);
ogl_WarnIfError();
RenderSubmissions();
m_CurrentScene = NULL;
}
Scene& CRenderer::GetScene()
{
ENSURE(m_CurrentScene);
return *m_CurrentScene;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// BindTexture: bind a GL texture object to current active unit
void CRenderer::BindTexture(int unit,GLuint tex)
{
pglActiveTextureARB(GL_TEXTURE0+unit);
glBindTexture(GL_TEXTURE_2D,tex);
if (tex) {
glEnable(GL_TEXTURE_2D);
} else {
glDisable(GL_TEXTURE_2D);
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// LoadAlphaMaps: load the 14 default alpha maps, pack them into one composite texture and
// calculate the coordinate of each alphamap within this packed texture
int CRenderer::LoadAlphaMaps()
{
const wchar_t* const key = L"(alpha map composite)";
Handle ht = ogl_tex_find(key);
// alpha map texture had already been created and is still in memory:
// reuse it, do not load again.
if(ht > 0)
{
m_hCompositeAlphaMap = ht;
return 0;
}
//
// load all textures and store Handle in array
//
Handle textures[NumAlphaMaps] = {0};
VfsPath path(L"art/textures/terrain/alphamaps/standard");
const wchar_t* fnames[NumAlphaMaps] = {
L"blendcircle.png",
L"blendlshape.png",
L"blendedge.png",
L"blendedgecorner.png",
L"blendedgetwocorners.png",
L"blendfourcorners.png",
L"blendtwooppositecorners.png",
L"blendlshapecorner.png",
L"blendtwocorners.png",
L"blendcorner.png",
L"blendtwoedges.png",
L"blendthreecorners.png",
L"blendushape.png",
L"blendbad.png"
};
size_t base = 0; // texture width/height (see below)
// for convenience, we require all alpha maps to be of the same BPP
// (avoids another ogl_tex_get_size call, and doesn't hurt)
size_t bpp = 0;
for(size_t i=0;i<NumAlphaMaps;i++)
{
// note: these individual textures can be discarded afterwards;
// we cache the composite.
textures[i] = ogl_tex_load(g_VFS, path / fnames[i]);
RETURN_STATUS_IF_ERR(textures[i]);
// get its size and make sure they are all equal.
// (the packing algo assumes this)
size_t this_width = 0, this_height = 0, this_bpp = 0; // fail-safe
(void)ogl_tex_get_size(textures[i], &this_width, &this_height, &this_bpp);
if(this_width != this_height)
DEBUG_DISPLAY_ERROR(L"Alpha maps are not square");
// .. first iteration: establish size
if(i == 0)
{
base = this_width;
bpp = this_bpp;
}
// .. not first: make sure texture size matches
else if(base != this_width || bpp != this_bpp)
DEBUG_DISPLAY_ERROR(L"Alpha maps are not identically sized (including pixel depth)");
}
//
// copy each alpha map (tile) into one buffer, arrayed horizontally.
//
size_t tile_w = 2+base+2; // 2 pixel border (avoids bilinear filtering artifacts)
size_t total_w = round_up_to_pow2(tile_w * NumAlphaMaps);
size_t total_h = base; ENSURE(is_pow2(total_h));
shared_ptr<u8> data;
AllocateAligned(data, total_w*total_h, maxSectorSize);
// for each tile on row
for (size_t i = 0; i < NumAlphaMaps; i++)
{
// get src of copy
u8* src = 0;
(void)ogl_tex_get_data(textures[i], &src);
size_t srcstep = bpp/8;
// get destination of copy
u8* dst = data.get() + (i*tile_w);
// for each row of image
for (size_t j = 0; j < base; j++)
{
// duplicate first pixel
*dst++ = *src;
*dst++ = *src;
// copy a row
for (size_t k = 0; k < base; k++)
{
*dst++ = *src;
src += srcstep;
}
// duplicate last pixel
*dst++ = *(src-srcstep);
*dst++ = *(src-srcstep);
// advance write pointer for next row
dst += total_w-tile_w;
}
m_AlphaMapCoords[i].u0 = float(i*tile_w+2) / float(total_w);
m_AlphaMapCoords[i].u1 = float((i+1)*tile_w-2) / float(total_w);
m_AlphaMapCoords[i].v0 = 0.0f;
m_AlphaMapCoords[i].v1 = 1.0f;
}
for (size_t i = 0; i < NumAlphaMaps; i++)
(void)ogl_tex_free(textures[i]);
// upload the composite texture
Tex t;
(void)tex_wrap(total_w, total_h, 8, TEX_GREY, data, 0, &t);
m_hCompositeAlphaMap = ogl_tex_wrap(&t, g_VFS, key);
(void)ogl_tex_set_filter(m_hCompositeAlphaMap, GL_LINEAR);
(void)ogl_tex_set_wrap (m_hCompositeAlphaMap, GL_CLAMP_TO_EDGE);
int ret = ogl_tex_upload(m_hCompositeAlphaMap, 0, 0, GL_INTENSITY);
return ret;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// UnloadAlphaMaps: frees the resources allocates by LoadAlphaMaps
void CRenderer::UnloadAlphaMaps()
{
ogl_tex_free(m_hCompositeAlphaMap);
m_hCompositeAlphaMap = 0;
}
Status CRenderer::ReloadChangedFileCB(void* param, const VfsPath& path)
{
CRenderer* renderer = static_cast<CRenderer*>(param);
// If an alpha map changed, and we already loaded them, then reload them
if (boost::algorithm::starts_with(path.string(), L"art/textures/terrain/alphamaps/"))
{
if (renderer->m_hCompositeAlphaMap)
{
renderer->UnloadAlphaMaps();
renderer->LoadAlphaMaps();
}
}
return INFO::OK;
}
void CRenderer::MakeShadersDirty()
{
m->ShadersDirty = true;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// Scripting Interface
jsval CRenderer::JSI_GetFastPlayerColor(JSContext*)
{
return ToJSVal(m_FastPlayerColor);
}
void CRenderer::JSI_SetFastPlayerColor(JSContext* ctx, jsval newval)
{
bool fast;
if (!ToPrimitive(ctx, newval, fast))
return;
SetFastPlayerColor(fast);
}
jsval CRenderer::JSI_GetRenderPath(JSContext*)
{
return ToJSVal(GetRenderPathName(m_Options.m_RenderPath));
}
void CRenderer::JSI_SetRenderPath(JSContext* ctx, jsval newval)
{
CStr name;
if (!ToPrimitive(ctx, newval, name))
return;
SetRenderPath(GetRenderPathByName(name));
}
jsval CRenderer::JSI_GetDepthTextureBits(JSContext*)
{
return ToJSVal(m->shadow->GetDepthTextureBits());
}
void CRenderer::JSI_SetDepthTextureBits(JSContext* ctx, jsval newval)
{
int depthTextureBits;
if (!ToPrimitive(ctx, newval, depthTextureBits))
return;
m->shadow->SetDepthTextureBits(depthTextureBits);
}
jsval CRenderer::JSI_GetShadows(JSContext*)
{
return ToJSVal(m_Options.m_Shadows);
}
void CRenderer::JSI_SetShadows(JSContext* ctx, jsval newval)
{
if (!ToPrimitive(ctx, newval, m_Options.m_Shadows))
return;
ReloadShaders();
}
jsval CRenderer::JSI_GetShadowAlphaFix(JSContext*)
{
return ToJSVal(m_Options.m_ShadowAlphaFix);
}
void CRenderer::JSI_SetShadowAlphaFix(JSContext* ctx, jsval newval)
{
if (!ToPrimitive(ctx, newval, m_Options.m_ShadowAlphaFix))
return;
m->shadow->RecreateTexture();
}
jsval CRenderer::JSI_GetShadowPCF(JSContext*)
{
return ToJSVal(m_Options.m_ShadowPCF);
}
void CRenderer::JSI_SetShadowPCF(JSContext* ctx, jsval newval)
{
if (!ToPrimitive(ctx, newval, m_Options.m_ShadowPCF))
return;
ReloadShaders();
}
jsval CRenderer::JSI_GetSky(JSContext*)
{
return ToJSVal(m->skyManager.GetSkySet());
}
void CRenderer::JSI_SetSky(JSContext* ctx, jsval newval)
{
CStrW skySet;
if (!ToPrimitive<CStrW>(ctx, newval, skySet)) return;
m->skyManager.SetSkySet(skySet);
}
void CRenderer::ScriptingInit()
{
AddProperty(L"fastPlayerColor", &CRenderer::JSI_GetFastPlayerColor, &CRenderer::JSI_SetFastPlayerColor);
AddProperty(L"renderpath", &CRenderer::JSI_GetRenderPath, &CRenderer::JSI_SetRenderPath);
AddProperty(L"sortAllTransparent", &CRenderer::m_SortAllTransparent);
AddProperty(L"displayFrustum", &CRenderer::m_DisplayFrustum);
AddProperty(L"shadowZBias", &CRenderer::m_ShadowZBias);
AddProperty(L"shadowMapSize", &CRenderer::m_ShadowMapSize);
AddProperty(L"disableCopyShadow", &CRenderer::m_DisableCopyShadow);
AddProperty(L"shadows", &CRenderer::JSI_GetShadows, &CRenderer::JSI_SetShadows);
AddProperty(L"depthTextureBits", &CRenderer::JSI_GetDepthTextureBits, &CRenderer::JSI_SetDepthTextureBits);
AddProperty(L"shadowAlphaFix", &CRenderer::JSI_GetShadowAlphaFix, &CRenderer::JSI_SetShadowAlphaFix);
AddProperty(L"shadowPCF", &CRenderer::JSI_GetShadowPCF, &CRenderer::JSI_SetShadowPCF);
AddProperty(L"skipSubmit", &CRenderer::m_SkipSubmit);
AddProperty(L"skySet", &CRenderer::JSI_GetSky, &CRenderer::JSI_SetSky);
CJSObject<CRenderer>::ScriptingInit("Renderer");
}
CTextureManager& CRenderer::GetTextureManager()
{
return m->textureManager;
}
CShaderManager& CRenderer::GetShaderManager()
{
return m->shaderManager;
}
CParticleManager& CRenderer::GetParticleManager()
{
return m->particleManager;
}
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