From aafc423a7298b0fc595c0209480474dc50c277f0 Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Sun, 21 Nov 2021 13:56:28 +0500
Subject: Added Gbuffer

---
 src/RenderConfigs.cpp | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/RenderConfigs.cpp

(limited to 'src/RenderConfigs.cpp')

diff --git a/src/RenderConfigs.cpp b/src/RenderConfigs.cpp
new file mode 100644
index 0000000..ebdbaef
--- /dev/null
+++ b/src/RenderConfigs.cpp
@@ -0,0 +1,75 @@
+#include "RenderConfigs.hpp"
+
+#include "AssetManager.hpp"
+
+Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH) {
+    auto gal = Gal::GetImplementation();
+
+    auto colorConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8A8);
+    color = gal->BuildTexture(colorConf);
+
+    auto normalConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8A8);
+    normal = gal->BuildTexture(normalConf);
+
+    auto dsConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::D24S8);
+    depthStencil = gal->BuildTexture(dsConf);
+
+    auto geomFbConf = gal->CreateFramebufferConfig();
+    geomFbConf->SetTexture(0, color);
+    geomFbConf->SetTexture(1, normal);
+    geomFbConf->SetDepthStencil(depthStencil);
+
+    geomFramebuffer = gal->BuildFramebuffer(geomFbConf);
+    geomFramebuffer->SetViewport(0, 0, geomW, geomH);
+
+    auto finalColorConf = gal->CreateTexture2DConfig(lightW, lightH, Gal::Format::R8G8B8A8);
+    finalColor = gal->BuildTexture(finalColorConf);
+
+    auto lightFbConf = gal->CreateFramebufferConfig();
+    lightFbConf->SetTexture(0, finalColor);
+
+    lightFramebuffer = gal->BuildFramebuffer(lightFbConf);
+    lightFramebuffer->SetViewport(0, 0, lightW, lightH);
+
+    std::string vertexSource, pixelSource;
+    {
+        auto vertAsset = AssetManager::GetAssetByAssetName("/altcraft/shaders/vert/light");
+        vertexSource = std::string((char*)vertAsset->data.data(), (char*)vertAsset->data.data() + vertAsset->data.size());
+
+        auto pixelAsset = AssetManager::GetAssetByAssetName("/altcraft/shaders/frag/light");
+        pixelSource = std::string((char*)pixelAsset->data.data(), (char*)pixelAsset->data.data() + pixelAsset->data.size());
+    }
+
+    auto lightPPC = gal->CreatePipelineConfig();
+    lightPPC->SetTarget(lightFramebuffer);
+    lightPPC->AddStaticTexture("color", color);
+    lightPPC->AddStaticTexture("normal", normal);
+    lightPPC->AddStaticTexture("depthStencil", depthStencil);
+
+    lightPPC->SetVertexShader(gal->LoadVertexShader(vertexSource));
+    lightPPC->SetPixelShader(gal->LoadPixelShader(pixelSource));
+
+    auto lightBB = lightPPC->BindVertexBuffer({
+        {"pos", Gal::Type::Vec2},
+        {"uvPos", Gal::Type::Vec2}
+        });
+
+    lightPipeline = gal->BuildPipeline(lightPPC);
+
+    constexpr float quadVertices[] = {
+        // pos         // uv
+        -1.0f,  1.0f,  0.0f, 1.0f,
+        -1.0f, -1.0f,  0.0f, 0.0f,
+         1.0f, -1.0f,  1.0f, 0.0f,
+
+        -1.0f,  1.0f,  0.0f, 1.0f,
+         1.0f, -1.0f,  1.0f, 0.0f,
+         1.0f,  1.0f,  1.0f, 1.0f
+    };
+    lightBuffer = gal->CreateBuffer();
+    lightBuffer->SetData({ reinterpret_cast<const std::byte*>(quadVertices), reinterpret_cast<const std::byte*>(quadVertices) + sizeof(quadVertices) });
+
+    lightPipelineInstance = lightPipeline->CreateInstance({
+        {lightBB, lightBuffer}
+        });
+}
-- 
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