From 039f05be5a548a9b5051b988869f984d7e335a47 Mon Sep 17 00:00:00 2001
From: LaG1924 <lag1924@gmail.com>
Date: Wed, 8 Dec 2021 01:55:37 +0500
Subject: Added more SSAO settings

---
 cwd/assets/altcraft/scripts/ui.lua         |  3 ++-
 cwd/assets/altcraft/shaders/frag/ssao.fs   |  5 ++++-
 cwd/assets/altcraft/ui/options-styles.rcss |  4 ++--
 cwd/assets/altcraft/ui/options.rml         | 14 ++++++++++----
 src/Render.cpp                             |  6 +++++-
 src/RenderConfigs.cpp                      | 24 +++++++++++++++---------
 src/RenderConfigs.hpp                      |  2 +-
 7 files changed, 39 insertions(+), 19 deletions(-)

diff --git a/cwd/assets/altcraft/scripts/ui.lua b/cwd/assets/altcraft/scripts/ui.lua
index bc04626..5973fc4 100644
--- a/cwd/assets/altcraft/scripts/ui.lua
+++ b/cwd/assets/altcraft/scripts/ui.lua
@@ -8,7 +8,8 @@ local options = {
     targetFps = 60,
     vsync = false,
     wireframe = false,
-    ssao = false,
+	ssaoSamples = 0,
+	ssaoScale = 0.5,
 }
 
 function OpenOptions(doc)
diff --git a/cwd/assets/altcraft/shaders/frag/ssao.fs b/cwd/assets/altcraft/shaders/frag/ssao.fs
index 0615e8f..4ed93fd 100644
--- a/cwd/assets/altcraft/shaders/frag/ssao.fs
+++ b/cwd/assets/altcraft/shaders/frag/ssao.fs
@@ -8,6 +8,8 @@ uniform sampler2D normal;
 uniform sampler2D worldPos;
 uniform sampler2D ssaoNoise;
 
+uniform int ssaoSamples;
+
 layout (std140) uniform Globals {
     mat4 projView;
     mat4 proj;
@@ -36,7 +38,8 @@ void main() {
     mat3 TBN = mat3(tangent, bitangent, normal);  
 
     float occlusion = 0.0;
-    for(int i = 0; i < kernelSize; i++)
+    int samples = min(kernelSize, ssaoSamples);
+    for(int i = 0; i < samples; i++)
     {
         vec3 samplePos = TBN * ssaoKernels[i].xyz;
         samplePos = fragPos + samplePos * radius; 
diff --git a/cwd/assets/altcraft/ui/options-styles.rcss b/cwd/assets/altcraft/ui/options-styles.rcss
index fbfc685..4822580 100644
--- a/cwd/assets/altcraft/ui/options-styles.rcss
+++ b/cwd/assets/altcraft/ui/options-styles.rcss
@@ -5,7 +5,7 @@
 form {
     width: 70%;
     display: block;
-    margin: 5% auto;
+    margin: 1% auto;
     background-color: #211710;
 }
 
@@ -80,5 +80,5 @@ input.range sliderarrowinc {
     width: 45%;
     height: 8%;
     position: fixed;
-    margin: 5% auto auto;
+    margin: 3% auto auto;
 }
diff --git a/cwd/assets/altcraft/ui/options.rml b/cwd/assets/altcraft/ui/options.rml
index ea7c39e..7211ef2 100644
--- a/cwd/assets/altcraft/ui/options.rml
+++ b/cwd/assets/altcraft/ui/options.rml
@@ -62,11 +62,17 @@
             </div>
 
             <div class="option">
-                <label>Ambient occlusion</label>
-                <input type="checkbox" id="ssao" />
-                <span id="ssao-val"></span>
+                <label>Ambient occlusion quality</label>
+                <input type="range" min="0" max="64" step="4" id="ssaoSamples" />
+                <span id="ssaoSamples-val"></span>
             </div>
-            
+
+            <div class="option">
+                <label>Ambient occlusion scale</label>
+                <input type="range" min="0.05" max="2.0" step="0.05" id="ssaoScale" />
+                <span id="ssaoScale-val"></span>
+            </div>
+
         </form>
         <button class="mc-button" id="done" onclick="CloseOptions(document)">Done</button>
     </body>
diff --git a/src/Render.cpp b/src/Render.cpp
index 35ee695..be7e2b2 100644
--- a/src/Render.cpp
+++ b/src/Render.cpp
@@ -152,7 +152,11 @@ void Render::PrepareToRendering() {
     bool useDeffered = Settings::ReadBool("deffered", false);
 
     if (useDeffered) {
-        gbuffer = std::make_unique<Gbuffer>(scaledW, scaledH, scaledW, scaledH, Settings::ReadBool("ssao", false));
+        int ssaoSamples = Settings::ReadDouble("ssaoSamples", 0.5f);
+        float ssaoScale = Settings::ReadDouble("ssaoScale", 0.5f);
+        size_t ssaoW = scaledW * ssaoScale, ssaoH = scaledH * ssaoScale;
+
+        gbuffer = std::make_unique<Gbuffer>(scaledW, scaledH, scaledW, scaledH, ssaoSamples, ssaoW, ssaoH);
         gbuffer->SetRenderBuff(renderBuff);
 
         std::mt19937 rng(std::chrono::steady_clock::now().time_since_epoch().count());
diff --git a/src/RenderConfigs.cpp b/src/RenderConfigs.cpp
index 3d91a1d..56c24bf 100644
--- a/src/RenderConfigs.cpp
+++ b/src/RenderConfigs.cpp
@@ -80,7 +80,7 @@ PostProcess::PostProcess(
         });
 }
 
-Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool applySsao) {
+Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, int ssaoSamples, size_t ssaoW, size_t ssaoH) {
     auto gal = Gal::GetImplementation();
 
     auto colorConf = gal->CreateTexture2DConfig(geomW, geomH, Gal::Format::R8G8B8);
@@ -124,7 +124,7 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool
     geomFramebuffer = gal->BuildFramebuffer(geomFbConf);
     geomFramebuffer->SetViewport(0, 0, geomW, geomH);
 
-    if (applySsao) {
+    if (ssaoSamples > 0) {
         auto noiseConf = gal->CreateTexture2DConfig(4, 4, Gal::Format::R32G32B32A32F);
         noiseConf->SetWrapping(Gal::Wrapping::Repeat);
         noiseConf->SetMinFilter(Gal::Filtering::Bilinear);
@@ -148,14 +148,20 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool
             {"ssaoNoise", ssaoNoise},
         };
 
+        std::vector<std::pair<std::string_view, Gal::Type>> ssaoParameters = {
+            {"ssaoSamples", Gal::Type::Int32},
+        };
+
         ssaoPass = std::make_unique<PostProcess>(LoadPixelShader("/altcraft/shaders/frag/ssao"),
             ssaoTextures,
-            std::vector<std::pair<std::string_view, Gal::Type>>{},
-            lightW,
-            lightH,
+            ssaoParameters,
+            ssaoW,
+            ssaoH,
             Gal::Format::R8G8B8A8,
             Gal::Filtering::Bilinear);
 
+        ssaoPass->SetShaderParameter("ssaoSamples", ssaoSamples);
+
         std::vector<std::pair<std::string_view, std::shared_ptr<Gal::Texture>>> ssaoBlurTextures = {
             {"blurInput", ssaoPass->GetResultTexture()},
         };
@@ -167,8 +173,8 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool
         ssaoBlurPass = std::make_unique<PostProcess>(LoadPixelShader("/altcraft/shaders/frag/blur"),
             ssaoBlurTextures,
             ssaoBlurParameters,
-            lightW,
-            lightH,
+            ssaoW,
+            ssaoH,
             Gal::Format::R8G8B8A8,
             Gal::Filtering::Bilinear);
 
@@ -189,7 +195,7 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool
         {"light", light},
     };
 
-    if (applySsao)
+    if (ssaoSamples > 0)
         lightingTextures.emplace_back("ssao", ssaoBlurPass->GetResultTexture());
 
     lightingPass = std::make_unique<PostProcess>(LoadPixelShader("/altcraft/shaders/frag/light"),
@@ -200,5 +206,5 @@ Gbuffer::Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool
         Gal::Format::R8G8B8A8,
         Gal::Filtering::Bilinear);
 
-    lightingPass->SetShaderParameter("applySsao", applySsao);
+    lightingPass->SetShaderParameter("applySsao", ssaoSamples);
 }
diff --git a/src/RenderConfigs.hpp b/src/RenderConfigs.hpp
index a9b8d72..d76647e 100644
--- a/src/RenderConfigs.hpp
+++ b/src/RenderConfigs.hpp
@@ -73,7 +73,7 @@ class Gbuffer {
     std::shared_ptr<Gal::Framebuffer> geomFramebuffer;
 
 public:
-    Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, bool applySsao);
+    Gbuffer(size_t geomW, size_t geomH, size_t lightW, size_t lightH, int ssaoSamples, size_t ssaoW, size_t ssaoH);
 
     std::shared_ptr<Gal::Framebuffer> GetGeometryTarget() {
         return geomFramebuffer;
-- 
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