Initial commit

2026-04-29 07:19:21 +03:00
commit 9a8cdfa08a
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+// Copyright (C) 2025 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+import QtQuick
+import QtQuick3D
+import QtQuick3D.Helpers.impl
+
+SsgiEnvEffect {
+    id: ssgiEffect
+
+    property bool indirectLightEnabled: true
+    property real indirectLightBoost: 4.0       // 1 - 100
+
+    property real bufferSizeFactor: 0.5         // 0 - 1 (leave it at 0.5, generally)
+
+    property bool simulatedBounceEnabled: false
+    property real simulatedBounceFactor: 0.5    // 0 - 1
+
+    property int sampleCount: 4      // 1 - 16
+    property real sampleRadius: 0.1  // 0.001 - 4
+    property int sliceCount: 4       // 1 - 8
+    property real hitThickness: 0.5  // 0.001 - 4
+
+    property int debugMode: 0 // internal; needs uncommenting ENABLE_DEBUG_MODE in all the shaders
+
+    readonly property TextureInput indirectAndAoSampler: TextureInput {
+        texture: Texture {}
+    }
+
+    readonly property TextureInput blurredIndirectAndAoSampler: TextureInput {
+        texture: Texture {}
+    }
+
+    Buffer {
+        id: indirectAndAoBuffer
+        name: "indirectAndAoBuffer"
+        sizeMultiplier: ssgiEffect.bufferSizeFactor
+        format: Buffer.RGBA16F
+
+    }
+
+    Buffer {
+        id: blurredIndirectAndAoBuffer
+        name: "blurredIndirectAndAoBuffer"
+        sizeMultiplier: ssgiEffect.bufferSizeFactor
+        bufferFlags: Buffer.SceneLifetime // for simulatedBounce
+        format: Buffer.RGBA16F
+    }
+
+    Shader {
+        id: ssgiMainShader
+        stage: Shader.Fragment
+        shader: "qrc:/qtquick3d_helpers/shaders/ssgi_ssilvb.frag"
+    }
+
+    Shader {
+        id: ssgiBlurDownShader
+        stage: Shader.Fragment
+        shader: "qrc:/qtquick3d_helpers/shaders/ssgi_dualfilterblur_down.frag"
+    }
+
+    Shader {
+        id: ssgiBlurUpShader
+        stage: Shader.Fragment
+        shader: "qrc:/qtquick3d_helpers/shaders/ssgi_dualfilterblur_up.frag"
+    }
+
+    Shader {
+        id: ssgiComposeShader
+        stage: Shader.Fragment
+        shader: "qrc:/qtquick3d_helpers/shaders/ssgi_compose.frag"
+    }
+
+    Pass {
+        id: ssaoAndIndirectPass
+        output: indirectAndAoBuffer
+        shaders: ssgiMainShader
+        commands: [
+            // for simulatedBounce
+            BufferInput {
+                // because it is SceneLifetime, so here this is the result from the previous frame
+                buffer: blurredIndirectAndAoBuffer
+                sampler: "blurredIndirectAndAoSampler"
+            }
+        ]
+    }
+
+    // Kawase / dual filter blur
+    // https://community.arm.com/cfs-file/__key/communityserver-blogs-components-weblogfiles/00-00-00-20-66/siggraph2015_2D00_mmg_2D00_marius_2D00_notes.pdf
+    Buffer {
+        id: tempBuffer1
+        name: "tempBuffer1"
+        sizeMultiplier: ssgiEffect.bufferSizeFactor * 0.5
+        format: Buffer.RGBA16F
+    }
+
+    Buffer {
+        id: tempBuffer2
+        name: "tempBuffer2"
+        sizeMultiplier: ssgiEffect.bufferSizeFactor * 0.5 * 0.5
+        format: Buffer.RGBA16F
+    }
+
+    Pass {
+        id: indirectLightBufferBlurDownInputTo1
+        output: tempBuffer1
+        shaders: ssgiBlurDownShader
+        commands: [
+            BufferInput {
+                buffer: indirectAndAoBuffer
+            }
+        ]
+    }
+    Pass {
+        id: indirectLightBufferBlurDown1To2
+        output: tempBuffer2
+        shaders: ssgiBlurDownShader
+        commands: [
+            BufferInput {
+                buffer: tempBuffer1
+            }
+        ]
+    }
+
+    Pass {
+        id: indirectLightBufferBlurUp2To1
+        output: tempBuffer1
+        shaders: ssgiBlurUpShader
+        commands: [
+            BufferInput {
+                buffer: tempBuffer2
+            }
+        ]
+    }
+    Pass {
+        id: indirectLightBufferBlurUp1ToOutput
+        output: blurredIndirectAndAoBuffer
+        shaders: ssgiBlurUpShader
+        commands: [
+            BufferInput {
+                buffer: tempBuffer1
+            }
+        ]
+    }
+
+    Pass {
+        id: ssgiCompositionPass
+        shaders: ssgiComposeShader
+        commands: [
+            BufferInput {
+                buffer: blurredIndirectAndAoBuffer
+                sampler: "blurredIndirectAndAoSampler"
+            }
+        ]
+    }
+
+    passes:
+        [ ssaoAndIndirectPass,
+          indirectLightBufferBlurDownInputTo1, indirectLightBufferBlurDown1To2,
+          indirectLightBufferBlurUp2To1, indirectLightBufferBlurUp1ToOutput,
+          ssgiCompositionPass
+        ]
+}