149 lines
4.1 KiB
C++
149 lines
4.1 KiB
C++
/* Copyright (C) 2009 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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* ModelRenderer implementation that sorts models and/or polygons based
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* on distance from viewer, for transparency rendering.
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*/
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#ifndef INCLUDED_TRANSPARENCYRENDERER
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#define INCLUDED_TRANSPARENCYRENDERER
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#include "renderer/ModelRenderer.h"
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#include "renderer/ModelVertexRenderer.h"
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#include "renderer/RenderModifiers.h"
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struct PolygonSortModelRendererInternals;
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/**
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* Class PolygonSortModelRenderer: Render animated models using only
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* OpenGL fixed function, sorting polygons from back to front.
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*
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* This ModelVertexRenderer should only be used with SortModelRenderer.
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* However, SortModelRenderer can be used with other ModelVertexRenderers
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* than this one.
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*/
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class PolygonSortModelRenderer : public ModelVertexRenderer
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{
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public:
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PolygonSortModelRenderer();
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~PolygonSortModelRenderer();
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// Implementations
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void* CreateModelData(CModel* model);
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void UpdateModelData(CModel* model, void* data, int updateflags);
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void DestroyModelData(CModel* model, void* data);
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void BeginPass(int streamflags, const CMatrix3D* texturematrix);
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void EndPass(int streamflags);
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void PrepareModelDef(int streamflags, const CModelDefPtr& def);
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void RenderModel(int streamflags, CModel* model, void* data);
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private:
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PolygonSortModelRendererInternals* m;
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};
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struct SortModelRendererInternals;
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/**
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* Class SortModelRenderer: Render models back-to-front from the
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* camera's point of view.
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*
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* This is less efficient than batched model renderers, but
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* necessary for transparent models.
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*
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* TransparencyRenderer can be used with any ModelVertexRenderer.
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*
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* Use this renderer together with TransparentRenderModifier and
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* TransparentShadowRenderModifier to achieve transparency.
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*/
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class SortModelRenderer : public ModelRenderer
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{
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public:
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SortModelRenderer(ModelVertexRendererPtr vertexrenderer);
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~SortModelRenderer();
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// Transparency renderer implementation
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void Submit(CModel* model);
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void PrepareModels();
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void EndFrame();
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bool HaveSubmissions();
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void Render(const RenderModifierPtr& modifier, int flags);
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private:
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SortModelRendererInternals* m;
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};
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/**
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* Class TransparentRenderModifier: Modifier for transparent models,
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* including alpha blending and lighting.
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*/
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class TransparentRenderModifier : public RenderModifier
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{
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public:
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TransparentRenderModifier();
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~TransparentRenderModifier();
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// Implementation
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int BeginPass(int pass);
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bool EndPass(int pass);
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void PrepareTexture(int pass, CTexturePtr& texture);
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void PrepareModel(int pass, CModel* model);
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};
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/**
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* Class TransparentShadowRenderModifier: Use to render shadow data for
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* transparent models into a luminance map.
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*/
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class TransparentShadowRenderModifier : public RenderModifier
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{
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public:
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TransparentShadowRenderModifier();
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~TransparentShadowRenderModifier();
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// Implementation
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int BeginPass(int pass);
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bool EndPass(int pass);
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void PrepareTexture(int pass, CTexturePtr& texture);
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void PrepareModel(int pass, CModel* model);
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};
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/**
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* Class TransparentDepthShadowModifier: Use to render shadow data for
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* transparent models into a depth texture: Writes into the depth buffer,
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* color data is undefined.
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*/
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class TransparentDepthShadowModifier : public RenderModifier
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{
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public:
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TransparentDepthShadowModifier();
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~TransparentDepthShadowModifier();
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// Implementation
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int BeginPass(int pass);
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bool EndPass(int pass);
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void PrepareTexture(int pass, CTexturePtr& texture);
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void PrepareModel(int pass, CModel* model);
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};
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#endif
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