forked from 0ad/0ad
Ykkrosh
67a94572ec
Replace almost all texture uses with calls to the new system. Add some anistropic filtering to terrain textures. Let Atlas load terrain texture previews partly-asynchronously by polling. Fix inefficient texture colour determination for minimap. Remove unused global g_TerrainModified. Change GUI texcoord computation to be less efficient but to cope with dynamic texture changes. Fix GUI renderer effects leaving bogus colour state. This was SVN commit r8099.
302 lines
8.2 KiB
C++
302 lines
8.2 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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* Implementation of common RenderModifiers
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*/
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#include "precompiled.h"
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#include "lib/ogl.h"
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#include "maths/Vector3D.h"
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#include "maths/Vector4D.h"
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#include "maths/Matrix3D.h"
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#include "graphics/LightEnv.h"
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#include "graphics/Model.h"
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#include "graphics/TextureManager.h"
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#include "renderer/RenderModifiers.h"
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#include "renderer/Renderer.h"
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#include "renderer/ShadowMap.h"
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///////////////////////////////////////////////////////////////////////////////////////////////
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// RenderModifier implementation
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const CMatrix3D* RenderModifier::GetTexGenMatrix(int UNUSED(pass))
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{
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debug_warn(L"GetTexGenMatrix not implemented by a derived RenderModifier");
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return 0;
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}
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void RenderModifier::PrepareModel(int UNUSED(pass), CModel* UNUSED(model))
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// LitRenderModifier implementation
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LitRenderModifier::LitRenderModifier()
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: m_Shadow(0), m_LightEnv(0)
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{
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}
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LitRenderModifier::~LitRenderModifier()
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{
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}
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// Set the shadow map for subsequent rendering
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void LitRenderModifier::SetShadowMap(const ShadowMap* shadow)
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{
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m_Shadow = shadow;
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}
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// Set the light environment for subsequent rendering
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void LitRenderModifier::SetLightEnv(const CLightEnv* lightenv)
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{
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m_LightEnv = lightenv;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// PlainRenderModifier implementation
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PlainRenderModifier::PlainRenderModifier()
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{
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}
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PlainRenderModifier::~PlainRenderModifier()
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{
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}
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int PlainRenderModifier::BeginPass(int pass)
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{
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debug_assert(pass == 0);
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// set up texture environment for base pass - modulate texture and primary color
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pglActiveTextureARB(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 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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// pass one through as alpha; transparent textures handled specially by TransparencyRenderer
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// (gl_constant means the colour comes from the gl_texture_env_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_CONSTANT);
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glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB, GL_SRC_ALPHA);
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float color[] = { 1.0, 1.0, 1.0, 1.0 };
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glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, color);
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return STREAM_POS|STREAM_COLOR|STREAM_UV0;
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}
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bool PlainRenderModifier::EndPass(int UNUSED(pass))
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{
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// We didn't modify blend state or higher texenvs, so we don't have
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// to reset OpenGL state here.
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return true;
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}
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void PlainRenderModifier::PrepareTexture(int UNUSED(pass), CTexturePtr& texture)
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{
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texture->Bind(0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// PlainLitRenderModifier implementation
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PlainLitRenderModifier::PlainLitRenderModifier()
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{
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}
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PlainLitRenderModifier::~PlainLitRenderModifier()
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{
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}
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int PlainLitRenderModifier::BeginPass(int pass)
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{
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debug_assert(pass == 0);
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debug_assert(GetShadowMap() && GetShadowMap()->GetUseDepthTexture());
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// Ambient + Diffuse * Shadow
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pglActiveTextureARB(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_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_TEXTURE1);
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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);
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, GetShadowMap()->GetTexture());
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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, &GetLightEnv()->m_UnitsAmbientColor.X);
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// Incoming color is ambient + diffuse light
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pglActiveTextureARB(GL_TEXTURE2);
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glEnable(GL_TEXTURE_2D);
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glBindTexture(GL_TEXTURE_2D, GetShadowMap()->GetTexture());
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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_TEXTURE0);
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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_TEXTURE0);
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return STREAM_POS|STREAM_COLOR|STREAM_UV0|STREAM_TEXGENTOUV1;
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}
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const CMatrix3D* PlainLitRenderModifier::GetTexGenMatrix(int UNUSED(pass))
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{
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return &GetShadowMap()->GetTextureMatrix();
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}
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bool PlainLitRenderModifier::EndPass(int UNUSED(pass))
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{
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g_Renderer.BindTexture(1, 0);
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g_Renderer.BindTexture(2, 0);
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pglActiveTextureARB(GL_TEXTURE0);
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pglClientActiveTextureARB(GL_TEXTURE0);
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return true;
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}
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void PlainLitRenderModifier::PrepareTexture(int UNUSED(pass), CTexturePtr& texture)
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{
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texture->Bind(0);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// WireframeRenderModifier implementation
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WireframeRenderModifier::WireframeRenderModifier()
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{
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}
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WireframeRenderModifier::~WireframeRenderModifier()
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{
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}
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int WireframeRenderModifier::BeginPass(int pass)
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{
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debug_assert(pass == 0);
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// first switch on wireframe
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glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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// setup some renderstate ..
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glDepthMask(0);
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ogl_tex_bind(0, 0);
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glColor4f(1,1,1,0.75f);
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glLineWidth(1.0f);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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return STREAM_POS;
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}
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bool WireframeRenderModifier::EndPass(int UNUSED(pass))
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{
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// .. restore the renderstates
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glDisable(GL_BLEND);
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glDepthMask(1);
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// restore fill mode, and we're done
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glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
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return true;
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}
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void WireframeRenderModifier::PrepareTexture(int UNUSED(pass), CTexturePtr& UNUSED(texture))
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{
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}
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void WireframeRenderModifier::PrepareModel(int UNUSED(pass), CModel* UNUSED(model))
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{
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}
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///////////////////////////////////////////////////////////////////////////////////////////////
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// SolidColorRenderModifier implementation
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SolidColorRenderModifier::SolidColorRenderModifier()
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{
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}
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SolidColorRenderModifier::~SolidColorRenderModifier()
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{
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}
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int SolidColorRenderModifier::BeginPass(int UNUSED(pass))
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{
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ogl_tex_bind(0, 0);
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return STREAM_POS;
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}
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bool SolidColorRenderModifier::EndPass(int UNUSED(pass))
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{
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return true;
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}
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void SolidColorRenderModifier::PrepareTexture(int UNUSED(pass), CTexturePtr& UNUSED(texture))
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{
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}
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void SolidColorRenderModifier::PrepareModel(int UNUSED(pass), CModel* UNUSED(model))
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{
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}
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