Ykkrosh
d295dacb9b
Change lighting model for new maps to allow better overbrightness. Cache player colours instead of loading from scripts every time the renderer wants them. This was SVN commit r9123.
202 lines
5.8 KiB
C++
202 lines
5.8 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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#include "precompiled.h"
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#include "DecalRData.h"
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#include "graphics/Decal.h"
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#include "graphics/LightEnv.h"
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#include "graphics/Model.h"
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#include "graphics/Terrain.h"
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#include "graphics/TextureManager.h"
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#include "ps/Game.h"
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#include "ps/Profile.h"
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#include "renderer/Renderer.h"
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#include "simulation2/Simulation2.h"
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#include "simulation2/components/ICmpWaterManager.h"
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// TODO: Currently each decal is a separate CDecalRData. We might want to use
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// lots of decals for special effects like shadows, footprints, etc, in which
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// case we should probably redesign this to batch them all together for more
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// efficient rendering.
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CDecalRData::CDecalRData(CModelDecal* decal)
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: m_Decal(decal), m_IndexArray(GL_STATIC_DRAW), m_Array(GL_STATIC_DRAW)
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{
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m_Position.type = GL_FLOAT;
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m_Position.elems = 3;
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m_Array.AddAttribute(&m_Position);
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m_DiffuseColor.type = GL_UNSIGNED_BYTE;
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m_DiffuseColor.elems = 4;
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m_Array.AddAttribute(&m_DiffuseColor);
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m_UV.type = GL_FLOAT;
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m_UV.elems = 2;
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m_Array.AddAttribute(&m_UV);
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BuildArrays();
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}
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CDecalRData::~CDecalRData()
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{
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}
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void CDecalRData::Update()
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{
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if (m_UpdateFlags != 0)
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{
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BuildArrays();
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m_UpdateFlags = 0;
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}
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}
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void CDecalRData::Render()
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{
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m_Decal->m_Decal.m_Texture->Bind(0);
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// TODO: Need to handle floating decals correctly. In particular, we need
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// to render non-floating before water and floating after water (to get
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// the blending right), and we also need to apply the correct lighting in
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// each case, which doesn't really seem possible with the current
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// TerrainRenderer.
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// Also, need to mark the decals as dirty when water height changes.
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// glDisable(GL_TEXTURE_2D);
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// m_Decal->GetBounds().Render();
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// glEnable(GL_TEXTURE_2D);
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u8* base = m_Array.Bind();
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GLsizei stride = (GLsizei)m_Array.GetStride();
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u8* indexBase = m_IndexArray.Bind();
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// TODO: make the shading color available to shader-based rendering
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// (which uses the color array) too
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glColor3fv(m_Decal->GetShadingColor().FloatArray());
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glVertexPointer(3, GL_FLOAT, stride, base + m_Position.offset);
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glColorPointer(4, GL_UNSIGNED_BYTE, stride, base + m_DiffuseColor.offset);
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glTexCoordPointer(2, GL_FLOAT, stride, base + m_UV.offset);
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if (!g_Renderer.m_SkipSubmit)
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{
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glDrawElements(GL_TRIANGLES, (GLsizei)m_IndexArray.GetNumVertices(), GL_UNSIGNED_SHORT, indexBase);
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}
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// bump stats
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g_Renderer.m_Stats.m_DrawCalls++;
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g_Renderer.m_Stats.m_TerrainTris += m_IndexArray.GetNumVertices() / 3;
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CVertexBuffer::Unbind();
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}
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void CDecalRData::BuildArrays()
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{
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PROFILE("decal build");
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const SDecal& decal = m_Decal->m_Decal;
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// TODO: Currently this constructs an axis-aligned bounding rectangle around
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// the decal. It would be more efficient for rendering if we excluded tiles
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// that are outside the (non-axis-aligned) decal rectangle.
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ssize_t i0, j0, i1, j1;
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m_Decal->CalcVertexExtents(i0, j0, i1, j1);
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// Construct vertex data arrays
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CmpPtr<ICmpWaterManager> cmpWaterManager(*g_Game->GetSimulation2(), SYSTEM_ENTITY);
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m_Array.SetNumVertices((i1-i0+1)*(j1-j0+1));
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m_Array.Layout();
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VertexArrayIterator<CVector3D> Position = m_Position.GetIterator<CVector3D>();
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VertexArrayIterator<SColor4ub> DiffuseColor = m_DiffuseColor.GetIterator<SColor4ub>();
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VertexArrayIterator<float[2]> UV = m_UV.GetIterator<float[2]>();
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bool includeSunColor = (g_Renderer.GetRenderPath() != CRenderer::RP_SHADER);
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for (ssize_t j = j0; j <= j1; ++j)
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{
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for (ssize_t i = i0; i <= i1; ++i)
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{
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CVector3D pos;
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m_Decal->m_Terrain->CalcPosition(i, j, pos);
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if (decal.m_Floating && !cmpWaterManager.null())
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pos.Y = std::max(pos.Y, cmpWaterManager->GetExactWaterLevel(pos.X, pos.Z));
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*Position = pos;
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++Position;
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CVector3D normal;
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m_Decal->m_Terrain->CalcNormal(i, j, normal);
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*DiffuseColor = g_Renderer.GetLightEnv().EvaluateDiffuse(normal, includeSunColor);
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++DiffuseColor;
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// Map from world space back into decal texture space
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CVector3D inv = m_Decal->GetInvTransform().Transform(pos);
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(*UV)[0] = 0.5f + (inv.X - decal.m_OffsetX) / decal.m_SizeX;
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(*UV)[1] = 0.5f - (inv.Z - decal.m_OffsetZ) / decal.m_SizeZ; // flip V to match our texture convention
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++UV;
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}
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}
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m_Array.Upload();
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m_Array.FreeBackingStore();
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// Construct index arrays for each terrain tile
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m_IndexArray.SetNumVertices((i1-i0)*(j1-j0)*6);
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m_IndexArray.Layout();
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VertexArrayIterator<u16> Index = m_IndexArray.GetIterator();
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u16 base = 0;
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ssize_t w = i1-i0+1;
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for (ssize_t dj = 0; dj < j1-j0; ++dj)
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{
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for (ssize_t di = 0; di < i1-i0; ++di)
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{
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bool dir = m_Decal->m_Terrain->GetTriangulationDir(i0+di, j0+dj);
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if (dir)
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{
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*Index++ = u16(((dj+0)*w+(di+0))+base);
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*Index++ = u16(((dj+0)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+0))+base);
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*Index++ = u16(((dj+0)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+0))+base);
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}
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else
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{
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*Index++ = u16(((dj+0)*w+(di+0))+base);
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*Index++ = u16(((dj+0)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+1))+base);
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*Index++ = u16(((dj+1)*w+(di+0))+base);
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*Index++ = u16(((dj+0)*w+(di+0))+base);
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}
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}
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}
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m_IndexArray.Upload();
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m_IndexArray.FreeBackingStore();
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}
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