From be808181b2c84358b232e4a32d1a6dd9dd6659ed Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Sat, 11 Dec 2021 20:44:40 +0500
Subject: Optimized GBuffer size

---
 src/RenderConfigs.cpp | 13 +++----------
 src/RenderConfigs.hpp |  2 +-
 src/RendererWorld.cpp |  2 ++
 3 files changed, 6 insertions(+), 11 deletions(-)

(limited to 'src')

diff --git a/src/RenderConfigs.cpp b/src/RenderConfigs.cpp
index af1cde9..d399818 100644
--- a/src/RenderConfigs.cpp
+++ b/src/RenderConfigs.cpp
@@ -198,18 +198,12 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, int s
     dsConf->SetMaxFilter(Gal::Filtering::Bilinear);
     depthStencil = gal->BuildTexture(dsConf);
 
-    auto worldPosConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R32G32B32A32F);
-    worldPosConf->SetMinFilter(Gal::Filtering::Bilinear);
-    worldPosConf->SetMaxFilter(Gal::Filtering::Bilinear);
-    worldPos = gal->BuildTexture(worldPosConf);
-
     auto geomFbConf = gal->CreateFramebufferConfig();
     geomFbConf->SetDepthStencil(depthStencil);
     geomFbConf->SetTexture(0, color);
     geomFbConf->SetTexture(1, normal);
-    geomFbConf->SetTexture(2, worldPos);
-    geomFbConf->SetTexture(3, addColor);
-    geomFbConf->SetTexture(4, light);
+    geomFbConf->SetTexture(2, addColor);
+    geomFbConf->SetTexture(3, light);
 
     geomFramebuffer = gal->BuildFramebuffer(geomFbConf);
     geomFramebuffer->SetViewport(0, 0, geomW, geomH);
@@ -234,7 +228,7 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, int s
 
         std::vector<std::pair<std::string_view, std::shared_ptr<Gal::Texture>>> ssaoTextures = {
             {"normal", normal},
-            {"worldPos", worldPos},
+            {"depthStencil", depthStencil},
             {"ssaoNoise", ssaoNoise},
         };
 
@@ -280,7 +274,6 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, int s
         {"depthStencil", depthStencil},
         {"color", color},
         {"normal", normal},
-        {"worldPos", worldPos},
         {"addColor", addColor},
         {"light", light},
     };
diff --git a/src/RenderConfigs.hpp b/src/RenderConfigs.hpp
index 8ca5a9e..92ce90c 100644
--- a/src/RenderConfigs.hpp
+++ b/src/RenderConfigs.hpp
@@ -5,6 +5,7 @@
 struct GlobalShaderParameters {
     glm::mat4 projView;
     glm::mat4 proj;
+    glm::mat4 invProj;
     glm::mat4 view;
     glm::uvec2 viewportSize;
     glm::uint32 paddingFA = 0xFAAFFAFA;
@@ -95,7 +96,6 @@ class Gbuffer {
     std::shared_ptr<Gal::Texture> depthStencil;
     std::shared_ptr<Gal::Texture> color; //RGB - color
     std::shared_ptr<Gal::Texture> normal; //RGB - normal
-    std::shared_ptr<Gal::Texture> worldPos; //RGB - viewSpaceWorldPos
     std::shared_ptr<Gal::Texture> addColor; //RGB - addColor
     std::shared_ptr<Gal::Texture> light; //R - faceLight, G - skyLight, B - unused
     std::shared_ptr<Gal::Framebuffer> geomFramebuffer;
diff --git a/src/RendererWorld.cpp b/src/RendererWorld.cpp
index b5120c2..b6e504d 100644
--- a/src/RendererWorld.cpp
+++ b/src/RendererWorld.cpp
@@ -287,6 +287,8 @@ void RendererWorld::Render(float screenRatio) {
         0.1f, 10000000.0f
     );
 
+    globalSpb->Get<GlobalShaderParameters>()->invProj = glm::inverse(projection);
+
     auto& view = globalSpb->Get<GlobalShaderParameters>()->view;
     view = GetGameState()->GetViewMatrix();
 
-- 
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