Ykkrosh
d158ed9dc9
Other: Trivially tidied profile text. Removed VC2005 deprecation avoidance, since wx 2.6.3 does that anyway. This was SVN commit r3773.
500 lines
16 KiB
C++
500 lines
16 KiB
C++
/**
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* =========================================================================
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* File : TerrainRenderer.cpp
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* Project : Pyrogenesis
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* Description : Terrain rendering (everything related to patches and
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* : water) is encapsulated in TerrainRenderer
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*
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* @author Nicolai Hähnle <nicolai@wildfiregames.com>
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* =========================================================================
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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/LightEnv.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 "maths/MathUtil.h"
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#include "ps/Game.h"
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#include "ps/Profile.h"
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#include "simulation/LOSManager.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/WaterManager.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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/**
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* VisiblePatches: Patches that were submitted for this frame
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*
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* @todo Merge this list with CPatchRData list
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*/
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std::vector<CPatch*> visiblePatches;
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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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}
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TerrainRenderer::~TerrainRenderer()
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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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debug_assert(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(patch);
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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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debug_assert(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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debug_assert(m->phase == Phase_Render);
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m->visiblePatches.clear();
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m->phase = Phase_Submit;
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}
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///////////////////////////////////////////////////////////////////
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// Query if patches have been submitted this frame
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bool TerrainRenderer::HaveSubmissions()
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{
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return m->visiblePatches.size() > 0;
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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(ShadowMap* shadow)
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{
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debug_assert(m->phase == Phase_Render);
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// switch on required client states
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glEnableClientState(GL_VERTEX_ARRAY);
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glEnableClientState(GL_COLOR_ARRAY);
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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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MICROLOG(L"base splat textures");
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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_TEXTURE);
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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_PRIMARY_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_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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for(uint i = 0; i < m->visiblePatches.size(); ++i)
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{
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CPatchRData* patchdata = (CPatchRData*)m->visiblePatches[i]->GetRenderData();
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patchdata->RenderBase(true); // with LOS color
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}
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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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// render blend passes for each patch
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for(uint i = 0; i < m->visiblePatches.size(); ++i)
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{
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CPatchRData* patchdata = (CPatchRData*)m->visiblePatches[i]->GetRenderData();
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patchdata->RenderBlends();
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}
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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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// Now apply lighting
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const CLightEnv& lightEnv = g_Renderer.GetLightEnv();
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glBlendFunc(GL_DST_COLOR, GL_ZERO);
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if (!shadow)
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{
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pglActiveTextureARB(GL_TEXTURE0);
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glBindTexture(GL_TEXTURE_2D, 0);
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// Shadow rendering disabled: Ambient + Diffuse
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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, &lightEnv.m_TerrainAmbientColor.X);
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}
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else
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{
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const CMatrix3D& texturematrix = shadow->GetTextureMatrix();
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pglActiveTextureARB(GL_TEXTURE0);
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glMatrixMode(GL_TEXTURE);
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glLoadMatrixf(&texturematrix._11);
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glMatrixMode(GL_MODELVIEW);
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glBindTexture(GL_TEXTURE_2D, shadow->GetTexture());
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if (shadow->GetUseDepthTexture())
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{
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// Ambient + ShTranslucency * Diffuse * (1 - Shadow) + Diffuse * Shadow
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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_PRIMARY_COLOR);
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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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float shadowTransp = g_Renderer.GetLightEnv().GetTerrainShadowTransparency();
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float color[4] = { shadowTransp, shadowTransp, shadowTransp, 1.0 };
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color);
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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_INTERPOLATE);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB, GL_PRIMARY_COLOR);
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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_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB_ARB, GL_SRC_COLOR);
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glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE0);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND2_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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pglActiveTextureARB(GL_TEXTURE2);
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, shadow->GetTexture()); // Need a valid texture or the unit will be disabled
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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, &lightEnv.m_TerrainAmbientColor.X);
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}
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else
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{
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// Ambient + Diffuse * Shadow
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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_PREVIOUS);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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pglActiveTextureARB(GL_TEXTURE1); // + Ambient
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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, &lightEnv.m_TerrainAmbientColor.X);
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}
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}
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pglActiveTextureARB(GL_TEXTURE0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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for (uint i = 0; i < m->visiblePatches.size(); ++i)
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{
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CPatchRData* patchdata = (CPatchRData*)m->visiblePatches[i]->GetRenderData();
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patchdata->RenderStreams(STREAM_POS|STREAM_COLOR|STREAM_POSTOUV0, false);
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}
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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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if ( shadow )
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{
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if ( shadow->GetUseDepthTexture() )
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g_Renderer.BindTexture(2,0);
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}
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g_Renderer.BindTexture(1,0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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pglActiveTextureARB(GL_TEXTURE0);
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glDepthMask(1);
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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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// Render un-textured patches as polygons
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void TerrainRenderer::RenderPatches()
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{
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debug_assert(m->phase == Phase_Render);
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glEnableClientState(GL_VERTEX_ARRAY);
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for(uint i = 0; i < m->visiblePatches.size(); ++i)
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{
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CPatchRData* patchdata = (CPatchRData*)m->visiblePatches[i]->GetRenderData();
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patchdata->RenderStreams(STREAM_POS, true);
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}
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glDisableClientState(GL_VERTEX_ARRAY);
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}
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///////////////////////////////////////////////////////////////////
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// Render outlines of submitted patches as lines
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void TerrainRenderer::RenderOutlines()
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{
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glEnableClientState(GL_VERTEX_ARRAY);
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for(uint i = 0; i < m->visiblePatches.size(); ++i)
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{
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CPatchRData* patchdata = (CPatchRData*)m->visiblePatches[i]->GetRenderData();
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patchdata->RenderOutline();
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}
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glDisableClientState(GL_VERTEX_ARRAY);
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}
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///////////////////////////////////////////////////////////////////
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// Render water that is part of the terrain
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void TerrainRenderer::RenderWater()
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{
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PROFILE( "render water" );
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//(Crappy) fresnel effect
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CCamera* Camera=g_Game->GetView()->GetCamera();
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CVector3D CamFace=Camera->m_Orientation.GetIn();
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CamFace.Normalize();
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float FresnelScalar = CamFace.Dot( CVector3D(0.0f, -1.0f, 0.0f) );
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//Invert and set boundaries
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FresnelScalar = (1 - FresnelScalar) * 0.4f + 0.6f;
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const int DX[] = {1,1,0,0};
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const int DZ[] = {0,1,1,0};
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CTerrain* terrain = g_Game->GetWorld()->GetTerrain();
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int mapSize = terrain->GetVerticesPerSide();
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CLOSManager* losMgr = g_Game->GetWorld()->GetLOSManager();
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WaterManager* WaterMgr = g_Renderer.GetWaterManager();
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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glDepthMask(GL_FALSE);
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double time = WaterMgr->m_WaterTexTimer;
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double period = 1.6;
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int curTex = (int)(time*60/period) % 60;
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ogl_tex_bind(WaterMgr->m_WaterTexture[curTex], 0);
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glMatrixMode(GL_TEXTURE);
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glLoadIdentity();
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float tx = -fmod(time, 20.0)/20.0;
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float ty = fmod(time, 35.0)/35.0;
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glTranslatef(tx, ty, 0);
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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_TEXTURE);
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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_PRIMARY_COLOR_ARB);
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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_PRIMARY_COLOR_ARB);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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// Set the proper LOD bias
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glTexEnvf(GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, g_Renderer.m_Options.m_LodBias);
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glBegin(GL_QUADS);
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for(size_t i=0; i<m->visiblePatches.size(); i++)
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{
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CPatch* patch = m->visiblePatches[i];
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for(int dx=0; dx<PATCH_SIZE; dx++)
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{
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for(int dz=0; dz<PATCH_SIZE; dz++)
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{
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int x = (patch->m_X*PATCH_SIZE + dx);
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int z = (patch->m_Z*PATCH_SIZE + dz);
|
|
|
|
// is any corner of the tile below the water height? if not, no point rendering it
|
|
bool shouldRender = false;
|
|
for(int j=0; j<4; j++)
|
|
{
|
|
float terrainHeight = terrain->getVertexGroundLevel(x + DX[j], z + DZ[j]);
|
|
if( terrainHeight < WaterMgr->m_WaterHeight )
|
|
{
|
|
shouldRender = true;
|
|
break;
|
|
}
|
|
}
|
|
if(!shouldRender)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
for(int j=0; j<4; j++)
|
|
{
|
|
int ix = x + DX[j];
|
|
int iz = z + DZ[j];
|
|
|
|
float vertX = ix * CELL_SIZE;
|
|
float vertZ = iz * CELL_SIZE;
|
|
|
|
float terrainHeight = terrain->getVertexGroundLevel(ix, iz);
|
|
|
|
float alpha = clamp(
|
|
(WaterMgr->m_WaterHeight - terrainHeight) / WaterMgr->m_WaterFullDepth + WaterMgr->m_WaterAlphaOffset,
|
|
-100.0f, WaterMgr->m_WaterMaxAlpha);
|
|
|
|
float losMod = 1.0f;
|
|
for(int k=0; k<4; k++)
|
|
{
|
|
int tx = ix - DX[k];
|
|
int tz = iz - DZ[k];
|
|
|
|
if(tx >= 0 && tz >= 0 && tx <= mapSize-2 && tz <= mapSize-2)
|
|
{
|
|
ELOSStatus s = losMgr->GetStatus(tx, tz, g_Game->GetLocalPlayer());
|
|
if(s == LOS_EXPLORED && losMod > 0.7f)
|
|
losMod = 0.7f;
|
|
else if(s==LOS_UNEXPLORED && losMod > 0.0f)
|
|
losMod = 0.0f;
|
|
}
|
|
}
|
|
|
|
glColor4f(WaterMgr->m_WaterColor.r*losMod, WaterMgr->m_WaterColor.g*losMod, WaterMgr->m_WaterColor.b*losMod, alpha * FresnelScalar);
|
|
pglMultiTexCoord2fARB(GL_TEXTURE0, vertX/16.0f, vertZ/16.0f);
|
|
glVertex3f(vertX, WaterMgr->m_WaterHeight, vertZ);
|
|
}
|
|
} //end of x loop
|
|
} //end of z loop
|
|
}
|
|
glEnd();
|
|
|
|
glLoadIdentity();
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glDepthMask(GL_TRUE);
|
|
glDisable(GL_BLEND);
|
|
glDisable(GL_TEXTURE_2D);
|
|
}
|
|
|