Shadows do at least something

res/shaders/BasePass.slang

@@ -17,15 +17,24 @@ float4 fragmentMain(in FragmentParameter params) : SV_Target
     LightingParameter lightingParams = params.getLightingParameter();
     MaterialParameter materialParams = params.getMaterialParameter();
     var brdf = Material.prepare(materialParams);
+    brdf.setNormal(normalize(params.normal_WS));
     uint2 tileIndex = uint2(floor(params.position_CS.xy / BLOCK_SIZE));
     uint startOffset = pLightCullingData.lightGrid[tileIndex].x;
     uint lightCount = pLightCullingData.lightGrid[tileIndex].y;
     float3 result = float3(0, 0, 0);
     for(int i = 0; i < pLightEnv.numDirectionalLights; ++i)
     {
-        result += pLightEnv.directionalLights[i].illuminate(lightingParams, brdf);
+        float4 lightSpacePos = mul(pLightEnv.directionalLights[i].lightSpaceMatrix, float4(params.position_WS, 1));
+        float3 projCoords = lightSpacePos.xyz / lightSpacePos.w;
+        projCoords = projCoords * 0.5 + 0.5;
+        float closestDepth = pLightEnv.shadowMap.Sample(pLightEnv.shadowSampler, projCoords.xy).r;
+        float currentDepth = projCoords.z;
+        float bias = max(0.05 * (1.0 - dot(brdf.getNormal(), pLightEnv.directionalLights[i].direction.xyz)), 0.005);
+        float shadow = currentDepth > closestDepth - bias ? 1.0 : 0.0;
+
+        result += shadow * pLightEnv.directionalLights[i].illuminate(lightingParams, brdf);
     }
-    for (uint i = 0; i < lightCount; ++i)
+    for (uint i = 0; i < pLightEnv.numPo; ++i)
     {
         uint lightIndex = pLightCullingData.lightIndexList[startOffset + i];
         result += pLightEnv.pointLights[lightIndex].illuminate(lightingParams, brdf);

res/shaders/lib/LightEnv.slang

@@ -11,25 +11,11 @@ struct DirectionalLight : ILightEnv
     float4 color;
     float4 direction;
     float4x4 lightSpaceMatrix;
-    Texture2D shadowMap;
-    SamplerState shadowSampler;
 
     float3 illuminate<B:IBRDF>(LightingParameter params, B brdf)
     {
         float3 dir_WS = -normalize(direction.xyz);
-        float3 color = brdf.evaluate(params.viewDir_WS, dir_WS, color.xyz * color.w);
+        return brdf.evaluate(params.viewDir_WS, dir_WS, color.xyz);
-
-        float4 lightSpacePos = mul(lightSpaceMatrix, float4(params.position_WS, 1));
-        float3 projCoords = lightSpacePos.xyz / lightSpacePos.w;
-        projCoords = projCoords * 0.5 + 0.5;
-        float closestDepth = shadowMap.Sample(shadowSampler, projCoords.xy).r;
-        float currentDepth = projCoords.z;
-        float bias = max(0.05 * (1.0 - dot(brdf.getNormal(), direction.xyz)), 0.005);
-        float shadow = currentDepth - bias > closestDepth ? 1.0 : 0.0;
-        if (projCoords.z > 1.0)
-            shadow = 0;
-
-        return shadow * color;
     }
 };
 
@@ -76,6 +62,8 @@ struct PointLight : ILightEnv
 struct LightEnv
 {
     StructuredBuffer<DirectionalLight> directionalLights;
+    Texture2D shadowMap; // todo: not an array
+    SamplerState shadowSampler;
     uint numDirectionalLights;
     StructuredBuffer<PointLight> pointLights;
     uint numPointLights;

res/shaders/lib/MaterialParameter.slang

@@ -136,8 +136,7 @@ struct VertexAttributes
 	{
 		float4 modelPos = float4(position_MS, 1);
 		float4 worldPos = mul(transformMatrix, modelPos);
-		float4 viewPos = mul(pViewParams.viewMatrix, worldPos);
+		float4 clipPos = mul(pViewParams.viewProjectionMatrix, worldPos);
-		float4 clipPos = mul(pViewParams.projectionMatrix, viewPos);
 		FragmentParameter result;
 		result.position_CS = clipPos;
 #ifndef POS_ONLY

src/Editor/main.cpp

@@ -10,8 +10,8 @@
 #include "Graphics/Metal/Graphics.h"
 #else
 #endif
-#include "Graphics/Vulkan/Graphics.h"
 #include "Graphics/StaticMeshVertexData.h"
+#include "Graphics/Vulkan/Graphics.h"
 #include "Window/InspectorView.h"
 #include "Window/PlayView.h"
 #include "Window/WindowManager.h"
@@ -61,9 +61,13 @@ int main() {
         //     .filePath = sourcePath / "import" / "textures" / "grass_block_side.png",
         //     .importPath = "",
         // });
+        //AssetImporter::importMesh(MeshImportArgs{
+        //    .filePath = sourcePath / "import" / "models" / "main1_sponza" / "sponza.gltf",
+        //    .importPath = "sponza",
+        //});
         AssetImporter::importMesh(MeshImportArgs{
-            .filePath = sourcePath / "import" / "models" / "main1_sponza" / "floor.glb",
+            .filePath = sourcePath / "import" / "models" / "rttest.glb",
-            .importPath = "sponza",
+            .importPath = "rttest",
         });
 
         getThreadPool().waitIdle();

src/Engine/Actor/DirectionalLightActor.cpp

@@ -6,7 +6,7 @@ DirectionalLightActor::DirectionalLightActor(PScene scene) : Actor(scene) { atta
 
 DirectionalLightActor::DirectionalLightActor(PScene scene, Vector color, float intensity, Vector direction) : Actor(scene) {
     attachComponent<Component::DirectionalLight>(Vector4(color, intensity));
-    Vector lightDirection = Vector(direction);
+    Vector lightDirection = glm::normalize(direction);
     float dot = glm::dot(lightDirection, Math::Transform::FORWARD);
     Quaternion rotation = Quaternion(1, 0, 0, 0);
     // Handle the edge cases first

src/Engine/Graphics/RenderPass/DepthCullingPass.cpp

@@ -71,6 +71,7 @@ void DepthCullingPass::beginFrame(const Component::Camera& cam, const Component:
 
 void DepthCullingPass::render() {
     graphics->beginDebugRegion("DepthCullingPass");
+    Gfx::PDescriptorSet set = depthAttachmentLayout->allocateDescriptorSet();
     {
         graphics->beginDebugRegion("MipGeneration");
         query->beginQuery();
@@ -79,7 +80,6 @@ void DepthCullingPass::render() {
                                                    Gfx::SE_PIPELINE_STAGE_COMPUTE_SHADER_BIT);
 
         depthMipBuffer->rotateBuffer(depthMipBuffer->getNumElements() * sizeof(uint32));
-        Gfx::PDescriptorSet set = depthAttachmentLayout->allocateDescriptorSet();
         set->updateTexture(DEPTHTEXTURE_NAME, 0, depthAttachment.getTexture());
         set->updateBuffer(DEPTHMIP_NAME, 0, depthMipBuffer);
         set->writeChanges();
@@ -127,10 +127,6 @@ void DepthCullingPass::render() {
         graphics->beginDebugRegion("DepthCulling");
         graphics->beginRenderPass(renderPass);
         Array<Gfx::ORenderCommand> commands;
-        Gfx::PDescriptorSet set = depthAttachmentLayout->allocateDescriptorSet();
-        set->updateTexture(DEPTHTEXTURE_NAME, 0, depthAttachment.getTexture());
-        set->updateBuffer(DEPTHMIP_NAME, 0, depthMipBuffer);
-        set->writeChanges();
         Gfx::ShaderPermutation permutation = graphics->getShaderCompiler()->getTemplate("DepthPass");
         permutation.setPositionOnly(true);
         permutation.setDepthCulling(getGlobals().useDepthCulling);

src/Engine/Graphics/RenderPass/ShadowPass.cpp

@@ -79,15 +79,13 @@ void ShadowPass::render() {
                 .offset = {0, 0},
             },
             "Shadow");
-        graphics->beginRenderPass(renderPass);
         auto light = scene->getLightEnvironment()->getDirectionalLight(shadowIndex);
-        
-
         Component::Camera lightCamera = Component::Camera{
-            .nearPlane = 0.f,
+            .nearPlane = -20.f,
-            .farPlane = 1000.0f,
+            .farPlane = 10.0f,
         };
         Gfx::PDescriptorSet viewParamsSet = createViewParamsSet(lightCamera, scene->getLightEnvironment()->getDirectionalTransform(shadowIndex));
+        graphics->beginRenderPass(renderPass);
         for (VertexData* vertexData : VertexData::getList()) {
             permutation.setVertexData(vertexData->getTypeName());
             Gfx::PermutationId id(permutation);
@@ -105,7 +103,7 @@ void ShadowPass::render() {
                     .pipelineLayout = collection->pipelineLayout,
                     .rasterizationState =
                         {
-                            .cullMode = Gfx::SE_CULL_MODE_FRONT_BIT,
+                            .cullMode = Gfx::SE_CULL_MODE_NONE,
                         },
                     .colorBlend =
                         {
@@ -122,7 +120,7 @@ void ShadowPass::render() {
                     .pipelineLayout = collection->pipelineLayout,
                     .rasterizationState =
                         {
-                            .cullMode = Gfx::SE_CULL_MODE_FRONT_BIT,
+                            .cullMode = Gfx::SE_CULL_MODE_NONE,
                         },
                     .colorBlend =
                         {
@@ -161,6 +159,7 @@ void ShadowPass::render() {
         }
         graphics->executeCommands(std::move(commands));
         graphics->endRenderPass();
+        graphics->waitDeviceIdle();
     }
     graphics->endDebugRegion();
 }
@@ -174,10 +173,10 @@ void ShadowPass::publishOutputs() {
                                                                                   .offset = {0, 0},
                                                                               },
                                                                           .fieldOfView = 0,
-                                                                          .left = -10,
+                                                                          .left = -20,
-                                                                          .right = 10,
+                                                                          .right = 20,
-                                                                          .top = -10,
+                                                                          .top = -20,
-                                                                          .bottom = 10});
+                                                                          .bottom = 20});
     viewport = shadowViewport;
 }
 

src/Engine/Graphics/Vulkan/Window.cpp

@@ -313,5 +313,5 @@ void Viewport::move(uint32 newOffsetX, uint32 newOffsetY) {
     offsetX = newOffsetX;
     offsetY = newOffsetY;
     handle.x = static_cast<float>(offsetX);
-    handle.y = static_cast<float>(offsetY + sizeY);
+    handle.y = static_cast<float>(offsetY);
 }

src/Engine/Graphics/Window.cpp

@@ -26,6 +26,6 @@ Matrix4 Viewport::getProjectionMatrix(float nearPlane, float farPlane) const {
         Matrix4 projectionMatrix = glm::perspective(fieldOfView, sizeX / static_cast<float>(sizeY), nearPlane, farPlane);
         return correctionMatrix * projectionMatrix;
     } else {
-        return correctionMatrix * glm::ortho(orthoLeft, orthoRight, orthoTop, orthoBottom, farPlane, nearPlane);
+        return correctionMatrix * glm::ortho(orthoLeft, orthoRight, orthoBottom, orthoTop, farPlane, nearPlane);
     }
 }

src/Engine/Scene/LightEnvironment.cpp

@@ -12,6 +12,14 @@ LightEnvironment::LightEnvironment(Gfx::PGraphics graphics)
         .name = "directionalLights",
         .descriptorType = Gfx::SE_DESCRIPTOR_TYPE_STORAGE_BUFFER,
     });
+    layout->addDescriptorBinding(Gfx::DescriptorBinding{
+        .name = "shadowMap",
+        .descriptorType = Gfx::SE_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
+    });
+    layout->addDescriptorBinding(Gfx::DescriptorBinding{
+        .name = "shadowSampler",
+        .descriptorType = Gfx::SE_DESCRIPTOR_TYPE_SAMPLER,
+    });
     layout->addDescriptorBinding(Gfx::DescriptorBinding{
         .name = "numDirectionalLights",
         .uniformLength = sizeof(uint32),
@@ -60,10 +68,14 @@ void LightEnvironment::reset() {
 }
 
 void LightEnvironment::addDirectionalLight(const Component::DirectionalLight& dirLight, const Component::Transform& transform) {
+    Vector eyePos = transform.getPosition();
+    Vector lookAt = eyePos + transform.getForward();
+    Matrix4 cameraMatrix = glm::lookAt(eyePos, lookAt, Vector(0, 1, 0));
+    Matrix4 correctionMatrix = Matrix4(1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1 / 2.f, 0, 0, 0, 1 / 2.f, 1);
     dirs.add(ShaderDirectionalLight{
         .color = Vector4(dirLight.color, dirLight.intensity),
         .direction = Vector4(transform.getForward(), 0),
-        .lightSpaceMatrix = transform.toMatrix(),
+        .lightSpaceMatrix = correctionMatrix * glm::ortho(-20.f, 20.f, 20.f, -20.f, 10.0f, -20.0f) * cameraMatrix,
     });
     directionalTransforms.add(transform);
     if (shadowMaps.size() < dirs.size()) {
@@ -75,6 +87,8 @@ void LightEnvironment::addDirectionalLight(const Component::DirectionalLight& di
             .usage = Gfx::SE_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | Gfx::SE_IMAGE_USAGE_SAMPLED_BIT,
             .name = "ShadowMap",
         }));
+        shadowMaps.back()->changeLayout(Gfx::SE_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, Gfx::SE_ACCESS_NONE, Gfx::SE_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+                                        Gfx::SE_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT, Gfx::SE_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT);
         shadowSamplers.add(graphics->createSampler(SamplerCreateInfo{
             .addressModeU = Gfx::SE_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
             .addressModeV = Gfx::SE_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER,
@@ -92,24 +106,26 @@ void LightEnvironment::addPointLight(const Component::PointLight& pointLight, co
 }
 
 void LightEnvironment::commit() {
-    directionalLights->rotateBuffer(sizeof(Component::DirectionalLight) * dirs.size());
+    directionalLights->rotateBuffer(sizeof(ShaderDirectionalLight) * dirs.size());
-    directionalLights->updateContents(0, sizeof(Component::DirectionalLight) * dirs.size(), dirs.data());
+    directionalLights->updateContents(0, sizeof(ShaderDirectionalLight) * dirs.size(), dirs.data());
     directionalLights->pipelineBarrier(Gfx::SE_ACCESS_TRANSFER_WRITE_BIT, Gfx::SE_PIPELINE_STAGE_TRANSFER_BIT,
                                        Gfx::SE_ACCESS_SHADER_READ_BIT | Gfx::SE_ACCESS_TRANSFER_WRITE_BIT,
                                        Gfx::SE_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | Gfx::SE_PIPELINE_STAGE_COMPUTE_SHADER_BIT |
                                            Gfx::SE_PIPELINE_STAGE_TRANSFER_BIT);
-    pointLights->rotateBuffer(sizeof(Component::PointLight) * points.size());
+    pointLights->rotateBuffer(sizeof(ShaderPointLight) * points.size());
-    pointLights->updateContents(0, sizeof(Component::PointLight) * points.size(), points.data());
+    pointLights->updateContents(0, sizeof(ShaderPointLight) * points.size(), points.data());
     pointLights->pipelineBarrier(Gfx::SE_ACCESS_TRANSFER_WRITE_BIT, Gfx::SE_PIPELINE_STAGE_TRANSFER_BIT,
                                  Gfx::SE_ACCESS_SHADER_READ_BIT | Gfx::SE_ACCESS_TRANSFER_WRITE_BIT,
                                  Gfx::SE_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | Gfx::SE_PIPELINE_STAGE_COMPUTE_SHADER_BIT |
                                      Gfx::SE_PIPELINE_STAGE_TRANSFER_BIT);
     uint32 numPointLights = (uint32)points.size();
     uint32 numDirectionalLights = (uint32)dirs.size();
-    set->updateConstants("numPointLights", 0, &numPointLights);
-    set->updateBuffer("pointLights", 0, pointLights);
     set->updateConstants("numDirectionalLights", 0, &numDirectionalLights);
     set->updateBuffer("directionalLights", 0, directionalLights);
+    set->updateTexture("shadowMap", 0, Gfx::PTexture2D(shadowMaps[0]));
+    set->updateSampler("shadowSampler", 0, Gfx::PSampler(shadowSamplers[0]));
+    set->updateConstants("numPointLights", 0, &numPointLights);
+    set->updateBuffer("pointLights", 0, pointLights);
     set->updateTexture("irradianceMap", 0, environment->getIrradianceMap());
     set->updateSampler("irradianceSampler", 0, environmentSampler);
     set->writeChanges();