Ykkrosh
b08e142193
Add shadow filtering (PCF) option. Fix ugly shadow saturation in old lighting mode. Fix fancy water shader. Fix camera matrix computation. Support scissoring of camera frustum. Optimise vertex skinning. Inline various matrix functions. Support filtering of the list of submitted models before a rendering pass, for more precise culling. Optimise water renderer (fixes #721, based on patch by ortalo). Use scissoring when generating reflection/refraction textures. Skip reflection/refraction texture generation when no water is visible. Render alpha-blended objects differently (fixes #434). Reduce shadow swimming effects. This was SVN commit r9814.
859 lines
29 KiB
C++
859 lines
29 KiB
C++
/* Copyright (C) 2011 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Terrain rendering (everything related to patches and water) is
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* encapsulated in TerrainRenderer
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*/
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#include "precompiled.h"
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#include "graphics/Camera.h"
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#include "graphics/Decal.h"
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#include "graphics/LightEnv.h"
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#include "graphics/LOSTexture.h"
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#include "graphics/Patch.h"
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#include "graphics/Terrain.h"
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#include "graphics/GameView.h"
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#include "graphics/Model.h"
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#include "graphics/ShaderManager.h"
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#include "maths/MathUtil.h"
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#include "ps/Filesystem.h"
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#include "ps/CLogger.h"
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#include "ps/Font.h"
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#include "ps/Game.h"
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#include "ps/Profile.h"
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#include "ps/World.h"
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#include "renderer/DecalRData.h"
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#include "renderer/PatchRData.h"
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#include "renderer/Renderer.h"
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#include "renderer/ShadowMap.h"
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#include "renderer/TerrainRenderer.h"
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#include "renderer/VertexArray.h"
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#include "renderer/WaterManager.h"
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#include "lib/res/graphics/ogl_shader.h"
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///////////////////////////////////////////////////////////////////////////////////////////////
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// TerrainRenderer implementation
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/**
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* TerrainRenderer keeps track of which phase it is in, to detect
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* when Submit, PrepareForRendering etc. are called in the wrong order.
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*/
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enum Phase {
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Phase_Submit,
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Phase_Render
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};
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/**
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* Struct TerrainRendererInternals: Internal variables used by the TerrainRenderer class.
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*/
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struct TerrainRendererInternals
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{
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/// Which phase (submitting or rendering patches) are we in right now?
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Phase phase;
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/// Patches that were submitted for this frame
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std::vector<CPatchRData*> visiblePatches;
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std::vector<CPatchRData*> filteredPatches;
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/// Decals that were submitted for this frame
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std::vector<CDecalRData*> visibleDecals;
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std::vector<CDecalRData*> filteredDecals;
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/// Fancy water shader
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Handle fancyWaterShader;
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};
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///////////////////////////////////////////////////////////////////
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// Construction/Destruction
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TerrainRenderer::TerrainRenderer()
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{
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m = new TerrainRendererInternals();
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m->phase = Phase_Submit;
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m->fancyWaterShader = 0;
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}
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TerrainRenderer::~TerrainRenderer()
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{
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if( m->fancyWaterShader )
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{
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ogl_program_free( m->fancyWaterShader );
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}
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delete m;
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}
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///////////////////////////////////////////////////////////////////
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// Submit a patch for rendering
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void TerrainRenderer::Submit(CPatch* patch)
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{
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ENSURE(m->phase == Phase_Submit);
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CPatchRData* data = (CPatchRData*)patch->GetRenderData();
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if (data == 0)
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{
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// no renderdata for patch, create it now
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data = new CPatchRData(patch);
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patch->SetRenderData(data);
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}
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data->Update();
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m->visiblePatches.push_back(data);
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}
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///////////////////////////////////////////////////////////////////
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// Submit a decal for rendering
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void TerrainRenderer::Submit(CModelDecal* decal)
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{
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ENSURE(m->phase == Phase_Submit);
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CDecalRData* data = (CDecalRData*)decal->GetRenderData();
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if (data == 0)
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{
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// no renderdata for decal, create it now
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data = new CDecalRData(decal);
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decal->SetRenderData(data);
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}
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data->Update();
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m->visibleDecals.push_back(data);
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}
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///////////////////////////////////////////////////////////////////
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// Prepare for rendering
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void TerrainRenderer::PrepareForRendering()
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{
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ENSURE(m->phase == Phase_Submit);
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m->phase = Phase_Render;
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}
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///////////////////////////////////////////////////////////////////
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// Clear submissions lists
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void TerrainRenderer::EndFrame()
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{
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ENSURE(m->phase == Phase_Render || m->phase == Phase_Submit);
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m->visiblePatches.clear();
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m->visibleDecals.clear();
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m->phase = Phase_Submit;
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}
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///////////////////////////////////////////////////////////////////
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// Culls patches and decals against a frustum.
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bool TerrainRenderer::CullPatches(const CFrustum* frustum)
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{
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m->filteredPatches.clear();
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for (std::vector<CPatchRData*>::iterator it = m->visiblePatches.begin(); it != m->visiblePatches.end(); it++)
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{
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if (frustum->IsBoxVisible(CVector3D(0, 0, 0), (*it)->GetPatch()->GetBounds()))
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m->filteredPatches.push_back(*it);
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}
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m->filteredDecals.clear();
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for (std::vector<CDecalRData*>::iterator it = m->visibleDecals.begin(); it != m->visibleDecals.end(); it++)
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{
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if (frustum->IsBoxVisible(CVector3D(0, 0, 0), (*it)->GetDecal()->GetBounds()))
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m->filteredDecals.push_back(*it);
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}
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return !m->filteredPatches.empty() || !m->filteredDecals.empty();
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}
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///////////////////////////////////////////////////////////////////
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// Full-featured terrain rendering with blending and everything
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void TerrainRenderer::RenderTerrain(bool filtered)
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{
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ENSURE(m->phase == Phase_Render);
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std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
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std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
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if (visiblePatches.empty() && visibleDecals.empty())
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return;
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// render the solid black sides of the map first
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g_Renderer.BindTexture(0, 0);
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glEnableClientState(GL_VERTEX_ARRAY);
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glColor3f(0, 0, 0);
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PROFILE_START("render terrain sides");
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for (size_t i = 0; i < visiblePatches.size(); ++i)
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visiblePatches[i]->RenderSides();
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PROFILE_END("render terrain sides");
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// switch on required client states
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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// render everything fullbright
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// set up texture environment for base pass
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pglActiveTextureARB(GL_TEXTURE0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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// Set alpha to 1.0
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_CONSTANT);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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static const float one[4] = { 1.f, 1.f, 1.f, 1.f };
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, one);
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PROFILE_START("render terrain base");
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CPatchRData::RenderBases(visiblePatches);
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PROFILE_END("render terrain base");
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// render blends
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// switch on the composite alpha map texture
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(void)ogl_tex_bind(g_Renderer.m_hCompositeAlphaMap, 1);
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// switch on second uv set
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pglClientActiveTextureARB(GL_TEXTURE1);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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// setup additional texenv required by blend pass
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pglActiveTextureARB(GL_TEXTURE1);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_ONE_MINUS_SRC_ALPHA);
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// switch on blending
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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// no need to write to the depth buffer a second time
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glDepthMask(0);
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// The decal color array contains lighting data, which we don't want in this non-shader mode
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glDisableClientState(GL_COLOR_ARRAY);
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// render blend passes for each patch
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PROFILE_START("render terrain blends");
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CPatchRData::RenderBlends(visiblePatches);
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PROFILE_END("render terrain blends");
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// Disable second texcoord array
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pglClientActiveTextureARB(GL_TEXTURE1);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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// Render terrain decals
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g_Renderer.BindTexture(1, 0);
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pglActiveTextureARB(GL_TEXTURE0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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PROFILE_START("render terrain decals");
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for (size_t i = 0; i < visibleDecals.size(); ++i)
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visibleDecals[i]->Render(CShaderProgramPtr());
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PROFILE_END("render terrain decals");
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// Now apply lighting
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const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
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pglClientActiveTextureARB(GL_TEXTURE0);
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glEnableClientState(GL_COLOR_ARRAY); // diffuse lighting colours
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glBlendFunc(GL_DST_COLOR, GL_ZERO);
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// GL_TEXTURE_ENV_COLOR requires four floats, so we shouldn't use the RGBColor directly
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float terrainAmbientColor[4] = {
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lightEnv.m_TerrainAmbientColor.X,
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lightEnv.m_TerrainAmbientColor.Y,
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lightEnv.m_TerrainAmbientColor.Z,
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1.f
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};
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CLOSTexture& losTexture = g_Renderer.GetScene().GetLOSTexture();
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int streamflags = STREAM_POS|STREAM_COLOR;
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pglActiveTextureARB(GL_TEXTURE0);
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// We're not going to use a texture here, but we have to have a valid texture
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// bound else the texture unit will be disabled.
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// We should still have a bound splat texture from some earlier rendering,
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// so assume that's still valid to use.
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// (TODO: That's a bit of an ugly hack.)
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// No shadows: (Ambient + Diffuse) * LOS
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_ADD);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, terrainAmbientColor);
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losTexture.BindTexture(1);
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pglClientActiveTextureARB(GL_TEXTURE1);
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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streamflags |= STREAM_POSTOUV1;
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glMatrixMode(GL_TEXTURE);
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glLoadMatrixf(losTexture.GetTextureMatrix());
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glMatrixMode(GL_MODELVIEW);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_ALPHA);
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glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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pglActiveTextureARB(GL_TEXTURE0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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PROFILE_START("render terrain streams");
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CPatchRData::RenderStreams(visiblePatches, streamflags);
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PROFILE_END("render terrain streams");
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glMatrixMode(GL_TEXTURE);
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glLoadIdentity();
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glMatrixMode(GL_MODELVIEW);
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// restore OpenGL state
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g_Renderer.BindTexture(1, 0);
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pglClientActiveTextureARB(GL_TEXTURE1);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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glMatrixMode(GL_TEXTURE);
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glLoadIdentity();
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glMatrixMode(GL_MODELVIEW);
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pglClientActiveTextureARB(GL_TEXTURE0);
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pglActiveTextureARB(GL_TEXTURE0);
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glDepthMask(1);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glDisable(GL_BLEND);
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glDisableClientState(GL_COLOR_ARRAY);
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glDisableClientState(GL_VERTEX_ARRAY);
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glDisableClientState(GL_TEXTURE_COORD_ARRAY);
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}
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///////////////////////////////////////////////////////////////////
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/**
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* Set up all the uniforms for a shader pass.
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*/
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void TerrainRenderer::PrepareShader(const CShaderProgramPtr& shader, ShadowMap* shadow)
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{
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const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
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if (shadow)
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{
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shader->BindTexture("shadowTex", shadow->GetTexture());
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shader->Uniform("shadowTransform", shadow->GetTextureMatrix());
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const float* offsets = shadow->GetFilterOffsets();
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shader->Uniform("shadowOffsets1", offsets[0], offsets[1], offsets[2], offsets[3]);
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shader->Uniform("shadowOffsets2", offsets[4], offsets[5], offsets[6], offsets[7]);
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}
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CLOSTexture& los = g_Renderer.GetScene().GetLOSTexture();
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shader->BindTexture("losTex", los.GetTexture());
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shader->Uniform("losTransform", los.GetTextureMatrix()[0], los.GetTextureMatrix()[12], 0.f, 0.f);
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shader->Uniform("ambient", lightEnv.m_TerrainAmbientColor);
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shader->Uniform("sunColor", lightEnv.m_SunColor);
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}
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void TerrainRenderer::RenderTerrainShader(ShadowMap* shadow, bool filtered)
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{
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ENSURE(m->phase == Phase_Render);
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std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
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std::vector<CDecalRData*>& visibleDecals = filtered ? m->filteredDecals : m->visibleDecals;
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if (visiblePatches.empty() && visibleDecals.empty())
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return;
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CShaderManager& shaderManager = g_Renderer.GetShaderManager();
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typedef std::map<CStr, CStr> Defines;
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Defines defBasic;
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if (shadow)
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{
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defBasic["USE_SHADOW"] = "1";
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if (g_Renderer.m_Caps.m_ARBProgramShadow && g_Renderer.m_Options.m_ARBProgramShadow)
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defBasic["USE_FP_SHADOW"] = "1";
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if (g_Renderer.m_Options.m_ShadowPCF)
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defBasic["USE_SHADOW_PCF"] = "1";
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}
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defBasic["LIGHTING_MODEL_" + g_Renderer.GetLightEnv().GetLightingModel()] = "1";
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CShaderProgramPtr shaderBase(shaderManager.LoadProgram("terrain_base", defBasic));
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CShaderProgramPtr shaderBlend(shaderManager.LoadProgram("terrain_blend", defBasic));
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CShaderProgramPtr shaderDecal(shaderManager.LoadProgram("terrain_decal", defBasic));
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// render the solid black sides of the map first
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g_Renderer.BindTexture(0, 0);
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glEnableClientState(GL_VERTEX_ARRAY);
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glColor3f(0, 0, 0);
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PROFILE_START("render terrain sides");
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for (size_t i = 0; i < visiblePatches.size(); ++i)
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visiblePatches[i]->RenderSides();
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PROFILE_END("render terrain sides");
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// switch on required client states
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glEnableClientState(GL_TEXTURE_COORD_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY); // diffuse lighting colours
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shaderBase->Bind();
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PrepareShader(shaderBase, shadow);
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PROFILE_START("render terrain base");
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CPatchRData::RenderBases(visiblePatches);
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PROFILE_END("render terrain base");
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shaderBase->Unbind();
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// render blends
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shaderBlend->Bind();
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PrepareShader(shaderBlend, shadow);
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// switch on the composite alpha map texture
|
|
(void)ogl_tex_bind(g_Renderer.m_hCompositeAlphaMap, 1);
|
|
|
|
// switch on second uv set
|
|
pglClientActiveTextureARB(GL_TEXTURE1);
|
|
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
|
|
// switch on blending
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
|
|
// no need to write to the depth buffer a second time
|
|
glDepthMask(0);
|
|
|
|
// render blend passes for each patch
|
|
PROFILE_START("render terrain blends");
|
|
CPatchRData::RenderBlends(visiblePatches);
|
|
PROFILE_END("render terrain blends");
|
|
|
|
// Disable second texcoord array
|
|
pglClientActiveTextureARB(GL_TEXTURE1);
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
|
|
shaderBlend->Unbind();
|
|
|
|
// Render terrain decals
|
|
|
|
shaderDecal->Bind();
|
|
PrepareShader(shaderDecal, shadow);
|
|
|
|
g_Renderer.BindTexture(1, 0);
|
|
pglActiveTextureARB(GL_TEXTURE0);
|
|
pglClientActiveTextureARB(GL_TEXTURE0);
|
|
|
|
PROFILE_START("render terrain decals");
|
|
for (size_t i = 0; i < visibleDecals.size(); ++i)
|
|
visibleDecals[i]->Render(shaderDecal);
|
|
PROFILE_END("render terrain decals");
|
|
|
|
shaderDecal->Unbind();
|
|
|
|
// restore OpenGL state
|
|
g_Renderer.BindTexture(1, 0);
|
|
g_Renderer.BindTexture(2, 0);
|
|
g_Renderer.BindTexture(3, 0);
|
|
|
|
pglClientActiveTextureARB(GL_TEXTURE0);
|
|
pglActiveTextureARB(GL_TEXTURE0);
|
|
glDepthMask(1);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
glDisable(GL_BLEND);
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Render un-textured patches as polygons
|
|
void TerrainRenderer::RenderPatches(bool filtered)
|
|
{
|
|
ENSURE(m->phase == Phase_Render);
|
|
|
|
std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
|
|
if (visiblePatches.empty())
|
|
return;
|
|
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
CPatchRData::RenderStreams(visiblePatches, STREAM_POS);
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Render outlines of submitted patches as lines
|
|
void TerrainRenderer::RenderOutlines(bool filtered)
|
|
{
|
|
ENSURE(m->phase == Phase_Render);
|
|
|
|
std::vector<CPatchRData*>& visiblePatches = filtered ? m->filteredPatches : m->visiblePatches;
|
|
if (visiblePatches.empty())
|
|
return;
|
|
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
for (size_t i = 0; i < visiblePatches.size(); ++i)
|
|
visiblePatches[i]->RenderOutline();
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
}
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Scissor rectangle of water patches
|
|
CBound TerrainRenderer::ScissorWater(const CMatrix3D &viewproj)
|
|
{
|
|
CBound scissor;
|
|
for (size_t i = 0; i < m->visiblePatches.size(); ++i)
|
|
{
|
|
CPatchRData* data = m->visiblePatches[i];
|
|
const CBound& waterBounds = data->GetWaterBounds();
|
|
if (waterBounds.IsEmpty())
|
|
continue;
|
|
|
|
CVector4D v1 = viewproj.Transform(CVector4D(waterBounds[0].X, waterBounds[1].Y, waterBounds[0].Z, 1.0f));
|
|
CVector4D v2 = viewproj.Transform(CVector4D(waterBounds[1].X, waterBounds[1].Y, waterBounds[0].Z, 1.0f));
|
|
CVector4D v3 = viewproj.Transform(CVector4D(waterBounds[0].X, waterBounds[1].Y, waterBounds[1].Z, 1.0f));
|
|
CVector4D v4 = viewproj.Transform(CVector4D(waterBounds[1].X, waterBounds[1].Y, waterBounds[1].Z, 1.0f));
|
|
CBound screenBounds;
|
|
#define ADDBOUND(v1, v2, v3, v4) \
|
|
if (v1[2] >= -v1[3]) \
|
|
screenBounds += CVector3D(v1[0], v1[1], v1[2]) * (1.0f / v1[3]); \
|
|
else \
|
|
{ \
|
|
float t = v1[2] + v1[3]; \
|
|
if (v2[2] > -v2[3]) \
|
|
{ \
|
|
CVector4D c2 = v1 + (v2 - v1) * (t / (t - (v2[2] + v2[3]))); \
|
|
screenBounds += CVector3D(c2[0], c2[1], c2[2]) * (1.0f / c2[3]); \
|
|
} \
|
|
if (v3[2] > -v3[3]) \
|
|
{ \
|
|
CVector4D c3 = v1 + (v3 - v1) * (t / (t - (v3[2] + v3[3]))); \
|
|
screenBounds += CVector3D(c3[0], c3[1], c3[2]) * (1.0f / c3[3]); \
|
|
} \
|
|
if (v4[2] > -v4[3]) \
|
|
{ \
|
|
CVector4D c4 = v1 + (v4 - v1) * (t / (t - (v4[2] + v4[3]))); \
|
|
screenBounds += CVector3D(c4[0], c4[1], c4[2]) * (1.0f / c4[3]); \
|
|
} \
|
|
}
|
|
ADDBOUND(v1, v2, v3, v4);
|
|
ADDBOUND(v2, v1, v3, v4);
|
|
ADDBOUND(v3, v1, v2, v4);
|
|
ADDBOUND(v4, v1, v2, v3);
|
|
#undef ADDBOUND
|
|
if (screenBounds[0].X >= 1.0f || screenBounds[1].X <= -1.0f || screenBounds[0].Y >= 1.0f || screenBounds[1].Y <= -1.0f)
|
|
continue;
|
|
scissor += screenBounds;
|
|
}
|
|
return CBound(CVector3D(clamp(scissor[0].X, -1.0f, 1.0f), clamp(scissor[0].Y, -1.0f, 1.0f), -1.0f),
|
|
CVector3D(clamp(scissor[1].X, -1.0f, 1.0f), clamp(scissor[1].Y, -1.0f, 1.0f), 1.0f));
|
|
}
|
|
|
|
// Render fancy water
|
|
bool TerrainRenderer::RenderFancyWater()
|
|
{
|
|
PROFILE("render fancy water");
|
|
|
|
// If we're using fancy water, make sure its shader is loaded
|
|
if (!m->fancyWaterShader)
|
|
{
|
|
Handle h = ogl_program_load(g_VFS, L"shaders/water_high.xml");
|
|
if (h < 0)
|
|
{
|
|
LOGERROR(L"Failed to load water shader. Falling back to non-fancy water.\n");
|
|
g_Renderer.m_Options.m_FancyWater = false;
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
m->fancyWaterShader = h;
|
|
}
|
|
}
|
|
|
|
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
|
|
CLOSTexture& losTexture = g_Renderer.GetScene().GetLOSTexture();
|
|
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
|
|
glEnable(GL_DEPTH_TEST);
|
|
glDepthFunc(GL_LEQUAL);
|
|
|
|
double time = WaterMgr->m_WaterTexTimer;
|
|
double period = 1.6;
|
|
int curTex = (int)(time*60/period) % 60;
|
|
|
|
WaterMgr->m_NormalMap[curTex]->Bind();
|
|
|
|
// Shift the texture coordinates by these amounts to make the water "flow"
|
|
float tx = -fmod(time, 81.0)/81.0;
|
|
float ty = -fmod(time, 34.0)/34.0;
|
|
float repeatPeriod = WaterMgr->m_RepeatPeriod;
|
|
|
|
// Set the proper LOD bias
|
|
glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, g_Renderer.m_Options.m_LodBias);
|
|
|
|
const CCamera& camera = g_Renderer.GetViewCamera();
|
|
CVector3D camPos = camera.m_Orientation.GetTranslation();
|
|
|
|
// Bind reflection and refraction textures on texture units 1 and 2
|
|
pglActiveTextureARB(GL_TEXTURE1_ARB);
|
|
glEnable(GL_TEXTURE_2D);
|
|
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_ReflectionTexture);
|
|
pglActiveTextureARB(GL_TEXTURE2_ARB);
|
|
glEnable(GL_TEXTURE_2D);
|
|
glBindTexture(GL_TEXTURE_2D, WaterMgr->m_RefractionTexture);
|
|
|
|
losTexture.BindTexture(3);
|
|
|
|
// Bind water shader and set arguments
|
|
ogl_program_use(m->fancyWaterShader);
|
|
|
|
GLint ambient = ogl_program_get_uniform_location(m->fancyWaterShader, "ambient");
|
|
GLint sunDir = ogl_program_get_uniform_location(m->fancyWaterShader, "sunDir");
|
|
GLint sunColor = ogl_program_get_uniform_location(m->fancyWaterShader, "sunColor");
|
|
GLint cameraPos = ogl_program_get_uniform_location(m->fancyWaterShader, "cameraPos");
|
|
GLint shininess = ogl_program_get_uniform_location(m->fancyWaterShader, "shininess");
|
|
GLint specularStrength = ogl_program_get_uniform_location(m->fancyWaterShader, "specularStrength");
|
|
GLint waviness = ogl_program_get_uniform_location(m->fancyWaterShader, "waviness");
|
|
GLint murkiness = ogl_program_get_uniform_location(m->fancyWaterShader, "murkiness");
|
|
GLint fullDepth = ogl_program_get_uniform_location(m->fancyWaterShader, "fullDepth");
|
|
GLint tint = ogl_program_get_uniform_location(m->fancyWaterShader, "tint");
|
|
GLint reflectionTint = ogl_program_get_uniform_location(m->fancyWaterShader, "reflectionTint");
|
|
GLint reflectionTintStrength = ogl_program_get_uniform_location(m->fancyWaterShader, "reflectionTintStrength");
|
|
GLint translation = ogl_program_get_uniform_location(m->fancyWaterShader, "translation");
|
|
GLint repeatScale = ogl_program_get_uniform_location(m->fancyWaterShader, "repeatScale");
|
|
GLint reflectionMatrix = ogl_program_get_uniform_location(m->fancyWaterShader, "reflectionMatrix");
|
|
GLint refractionMatrix = ogl_program_get_uniform_location(m->fancyWaterShader, "refractionMatrix");
|
|
GLint losMatrix = ogl_program_get_uniform_location(m->fancyWaterShader, "losMatrix");
|
|
GLint normalMap = ogl_program_get_uniform_location(m->fancyWaterShader, "normalMap");
|
|
GLint reflectionMap = ogl_program_get_uniform_location(m->fancyWaterShader, "reflectionMap");
|
|
GLint refractionMap = ogl_program_get_uniform_location(m->fancyWaterShader, "refractionMap");
|
|
GLint losMap = ogl_program_get_uniform_location(m->fancyWaterShader, "losMap");
|
|
|
|
const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
|
|
pglUniform3fvARB(ambient, 1, &lightEnv.m_TerrainAmbientColor.X);
|
|
pglUniform3fvARB(sunDir, 1, &lightEnv.GetSunDir().X);
|
|
pglUniform3fvARB(sunColor, 1, &lightEnv.m_SunColor.X);
|
|
pglUniform1fARB(shininess, WaterMgr->m_Shininess);
|
|
pglUniform1fARB(specularStrength, WaterMgr->m_SpecularStrength);
|
|
pglUniform1fARB(waviness, WaterMgr->m_Waviness);
|
|
pglUniform1fARB(murkiness, WaterMgr->m_Murkiness);
|
|
pglUniform1fARB(fullDepth, WaterMgr->m_WaterFullDepth);
|
|
pglUniform3fvARB(tint, 1, WaterMgr->m_WaterTint.FloatArray());
|
|
pglUniform1fARB(reflectionTintStrength, WaterMgr->m_ReflectionTintStrength);
|
|
pglUniform3fvARB(reflectionTint, 1, WaterMgr->m_ReflectionTint.FloatArray());
|
|
pglUniform2fARB(translation, tx, ty);
|
|
pglUniform1fARB(repeatScale, 1.0f / repeatPeriod);
|
|
pglUniformMatrix4fvARB(reflectionMatrix, 1, false, &WaterMgr->m_ReflectionMatrix._11);
|
|
pglUniformMatrix4fvARB(refractionMatrix, 1, false, &WaterMgr->m_RefractionMatrix._11);
|
|
pglUniformMatrix4fvARB(losMatrix, 1, false, losTexture.GetTextureMatrix());
|
|
pglUniform1iARB(normalMap, 0); // texture unit 0
|
|
pglUniform1iARB(reflectionMap, 1); // texture unit 1
|
|
pglUniform1iARB(refractionMap, 2); // texture unit 2
|
|
pglUniform1iARB(losMap, 3); // texture unit 3
|
|
pglUniform3fvARB(cameraPos, 1, &camPos.X);
|
|
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
glEnableClientState(GL_COLOR_ARRAY);
|
|
|
|
for (size_t i = 0; i < m->visiblePatches.size(); ++i)
|
|
{
|
|
CPatchRData* data = m->visiblePatches[i];
|
|
data->RenderWater();
|
|
}
|
|
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
|
|
// Unbind the LOS/refraction/reflection textures and the shader
|
|
g_Renderer.BindTexture(3, 0);
|
|
g_Renderer.BindTexture(2, 0);
|
|
g_Renderer.BindTexture(1, 0);
|
|
|
|
pglActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
ogl_program_use(0);
|
|
|
|
glDisable(GL_BLEND);
|
|
|
|
return true;
|
|
}
|
|
|
|
void TerrainRenderer::RenderSimpleWater()
|
|
{
|
|
PROFILE("render simple water");
|
|
|
|
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
|
|
CLOSTexture& losTexture = g_Game->GetView()->GetLOSTexture();
|
|
|
|
glEnable(GL_BLEND);
|
|
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
|
|
glEnable(GL_DEPTH_TEST);
|
|
glDepthFunc(GL_LEQUAL);
|
|
|
|
double time = WaterMgr->m_WaterTexTimer;
|
|
double period = 1.6f;
|
|
int curTex = (int)(time*60/period) % 60;
|
|
|
|
WaterMgr->m_WaterTexture[curTex]->Bind();
|
|
|
|
// Shift the texture coordinates by these amounts to make the water "flow"
|
|
float tx = -fmod(time, 81.0)/81.0;
|
|
float ty = -fmod(time, 34.0)/34.0;
|
|
float repeatPeriod = 16.0f;
|
|
|
|
// Perform the shifting by using texture coordinate generation
|
|
GLfloat texgenS0[4] = { 1/repeatPeriod, 0, 0, tx };
|
|
GLfloat texgenT0[4] = { 0, 0, 1/repeatPeriod, ty };
|
|
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
|
|
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
|
|
glTexGenfv(GL_S, GL_OBJECT_PLANE, texgenS0);
|
|
glTexGenfv(GL_T, GL_OBJECT_PLANE, texgenT0);
|
|
glEnable(GL_TEXTURE_GEN_S);
|
|
glEnable(GL_TEXTURE_GEN_T);
|
|
|
|
// Set up texture environment to multiply vertex RGB by texture RGB and use vertex alpha
|
|
GLfloat waterColor[4] = { WaterMgr->m_WaterColor.r, WaterMgr->m_WaterColor.g, WaterMgr->m_WaterColor.b, 1.0f };
|
|
glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, waterColor);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_TEXTURE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_CONSTANT);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PRIMARY_COLOR_ARB);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
|
|
|
|
// Multiply by LOS texture
|
|
losTexture.BindTexture(1);
|
|
const float *losMatrix = losTexture.GetTextureMatrix();
|
|
GLfloat texgenS1[4] = { losMatrix[0], losMatrix[4], losMatrix[8], losMatrix[12] };
|
|
GLfloat texgenT1[4] = { losMatrix[1], losMatrix[5], losMatrix[9], losMatrix[13] };
|
|
glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
|
|
glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
|
|
glTexGenfv(GL_S, GL_OBJECT_PLANE, texgenS1);
|
|
glTexGenfv(GL_T, GL_OBJECT_PLANE, texgenT1);
|
|
glEnable(GL_TEXTURE_GEN_S);
|
|
glEnable(GL_TEXTURE_GEN_T);
|
|
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, GL_MODULATE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PREVIOUS);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB, GL_SRC_COLOR);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_RGB_ARB, GL_TEXTURE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_ALPHA);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, GL_REPLACE);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB, GL_PREVIOUS);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
|
|
|
|
// Set the proper LOD bias
|
|
glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, g_Renderer.m_Options.m_LodBias);
|
|
|
|
glEnableClientState(GL_VERTEX_ARRAY);
|
|
glEnableClientState(GL_COLOR_ARRAY);
|
|
|
|
for (size_t i = 0; i < m->visiblePatches.size(); ++i)
|
|
{
|
|
CPatchRData* data = m->visiblePatches[i];
|
|
data->RenderWater();
|
|
}
|
|
|
|
glDisableClientState(GL_COLOR_ARRAY);
|
|
glDisableClientState(GL_VERTEX_ARRAY);
|
|
|
|
g_Renderer.BindTexture(1, 0);
|
|
|
|
glDisable(GL_TEXTURE_GEN_S);
|
|
glDisable(GL_TEXTURE_GEN_T);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
|
|
pglActiveTextureARB(GL_TEXTURE0_ARB);
|
|
|
|
// Clean up the texture matrix and blend mode
|
|
glDisable(GL_TEXTURE_GEN_S);
|
|
glDisable(GL_TEXTURE_GEN_T);
|
|
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
|
|
|
|
glDisable(GL_BLEND);
|
|
glDisable(GL_TEXTURE_2D);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Render water that is part of the terrain
|
|
void TerrainRenderer::RenderWater()
|
|
{
|
|
WaterManager* WaterMgr = g_Renderer.GetWaterManager();
|
|
|
|
if (!WaterMgr->WillRenderFancyWater() || !RenderFancyWater())
|
|
RenderSimpleWater();
|
|
}
|
|
|
|
void TerrainRenderer::RenderPriorities()
|
|
{
|
|
PROFILE("render priorities");
|
|
|
|
ENSURE(m->phase == Phase_Render);
|
|
|
|
CFont font(L"mono-stroke-10");
|
|
font.Bind();
|
|
|
|
glColor3f(1, 1, 0);
|
|
|
|
for (size_t i = 0; i < m->visiblePatches.size(); ++i)
|
|
m->visiblePatches[i]->RenderPriorities();
|
|
}
|