source/renderer/RenderModifiers.cpp

   1 /* Copyright (C) 2022 Wildfire Games.
   2  * This file is part of 0 A.D.
   3  *
   4  * 0 A.D. is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * 0 A.D. is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "precompiled.h"
  19
  20 #include "renderer/RenderModifiers.h"
  21
  22 #include "graphics/GameView.h"
  23 #include "graphics/LightEnv.h"
  24 #include "graphics/LOSTexture.h"
  25 #include "graphics/Model.h"
  26 #include "graphics/TextureManager.h"
  27 #include "maths/Vector3D.h"
  28 #include "maths/Vector4D.h"
  29 #include "maths/Matrix3D.h"
  30 #include "ps/CStrInternStatic.h"
  31 #include "ps/Game.h"
  32 #include "renderer/Renderer.h"
  33 #include "renderer/SceneRenderer.h"
  34 #include "renderer/ShadowMap.h"
  35
  36 #include <boost/algorithm/string.hpp>
  37
  38 ///////////////////////////////////////////////////////////////////////////////////////////////
  39 // LitRenderModifier implementation
  40
  41 LitRenderModifier::LitRenderModifier()
  42         : m_Shadow(0), m_LightEnv(0)
  43 {
  44 }
  45
  46 LitRenderModifier::~LitRenderModifier()
  47 {
  48 }
  49
  50 // Set the shadow map for subsequent rendering
  51 void LitRenderModifier::SetShadowMap(const ShadowMap* shadow)
  52 {
  53         m_Shadow = shadow;
  54 }
  55
  56 // Set the light environment for subsequent rendering
  57 void LitRenderModifier::SetLightEnv(const CLightEnv* lightenv)
  58 {
  59         m_LightEnv = lightenv;
  60 }
  61
  62 ///////////////////////////////////////////////////////////////////////////////////////////////
  63 // ShaderRenderModifier implementation
  64
  65 ShaderRenderModifier::ShaderRenderModifier()
  66         : m_ShadingColor(1.0f, 1.0f, 1.0f, 1.0f), m_PlayerColor(1.0f, 1.0f, 1.0f, 1.0f)
  67 {
  68 }
  69
  70 void ShaderRenderModifier::BeginPass(
  71         Renderer::Backend::IDeviceCommandContext* deviceCommandContext,
  72         Renderer::Backend::IShaderProgram* shader)
  73 {
  74         const CMatrix3D transform =
  75                 g_Renderer.GetSceneRenderer().GetViewCamera().GetViewProjection();
  76         deviceCommandContext->SetUniform(
  77                 shader->GetBindingSlot(str_transform), transform.AsFloatArray());
  78         deviceCommandContext->SetUniform(
  79                 shader->GetBindingSlot(str_cameraPos),
  80                 g_Renderer.GetSceneRenderer().GetViewCamera().GetOrientation().GetTranslation().AsFloatArray());
  81
  82         if (GetShadowMap())
  83                 GetShadowMap()->BindTo(deviceCommandContext, shader);
  84
  85         if (GetLightEnv())
  86         {
  87                 deviceCommandContext->SetUniform(
  88                         shader->GetBindingSlot(str_ambient),
  89                         GetLightEnv()->m_AmbientColor.AsFloatArray());
  90                 deviceCommandContext->SetUniform(
  91                         shader->GetBindingSlot(str_sunDir),
  92                         GetLightEnv()->GetSunDir().AsFloatArray());
  93                 deviceCommandContext->SetUniform(
  94                         shader->GetBindingSlot(str_sunColor),
  95                         GetLightEnv()->m_SunColor.AsFloatArray());
  96
  97                 deviceCommandContext->SetUniform(
  98                         shader->GetBindingSlot(str_fogColor),
  99                         GetLightEnv()->m_FogColor.AsFloatArray());
 100                 deviceCommandContext->SetUniform(
 101                         shader->GetBindingSlot(str_fogParams),
 102                         GetLightEnv()->m_FogFactor, GetLightEnv()->m_FogMax);
 103         }
 104
 105         if (shader->GetBindingSlot(str_losTex) >= 0)
 106         {
 107                 CLOSTexture& los = g_Renderer.GetSceneRenderer().GetScene().GetLOSTexture();
 108                 deviceCommandContext->SetTexture(
 109                         shader->GetBindingSlot(str_losTex), los.GetTextureSmooth());
 110                 // Don't bother sending the whole matrix, we just need two floats (scale and translation)
 111                 deviceCommandContext->SetUniform(
 112                         shader->GetBindingSlot(str_losTransform),
 113                         los.GetTextureMatrix()[0], los.GetTextureMatrix()[12]);
 114         }
 115
 116         m_BindingInstancingTransform = shader->GetBindingSlot(str_instancingTransform);
 117         m_BindingShadingColor = shader->GetBindingSlot(str_shadingColor);
 118         m_BindingPlayerColor = shader->GetBindingSlot(str_playerColor);
 119
 120         if (m_BindingShadingColor >= 0)
 121         {
 122                 m_ShadingColor = CColor(1.0f, 1.0f, 1.0f, 1.0f);
 123                 deviceCommandContext->SetUniform(
 124                         m_BindingShadingColor, m_ShadingColor.AsFloatArray());
 125         }
 126
 127         if (m_BindingPlayerColor >= 0)
 128         {
 129                 m_PlayerColor = g_Game->GetPlayerColor(0);
 130                 deviceCommandContext->SetUniform(
 131                         m_BindingPlayerColor, m_PlayerColor.AsFloatArray());
 132         }
 133 }
 134
 135 void ShaderRenderModifier::PrepareModel(
 136         Renderer::Backend::IDeviceCommandContext* deviceCommandContext,
 137         CModel* model)
 138 {
 139         if (m_BindingInstancingTransform >= 0)
 140         {
 141                 deviceCommandContext->SetUniform(
 142                         m_BindingInstancingTransform, model->GetTransform().AsFloatArray());
 143         }
 144
 145         if (m_BindingShadingColor >= 0 && m_ShadingColor != model->GetShadingColor())
 146         {
 147                 m_ShadingColor = model->GetShadingColor();
 148                 deviceCommandContext->SetUniform(
 149                         m_BindingShadingColor, m_ShadingColor.AsFloatArray());
 150         }
 151
 152         if (m_BindingPlayerColor >= 0)
 153         {
 154                 const CColor& playerColor = g_Game->GetPlayerColor(model->GetPlayerID());
 155                 if (m_PlayerColor != playerColor)
 156                 {
 157                         m_PlayerColor = playerColor;
 158                         deviceCommandContext->SetUniform(
 159                         m_BindingPlayerColor, m_PlayerColor.AsFloatArray());
 160                 }
 161         }
 162 }