Implemented image binding reflection

Now using image binding reflection for the KRCamera debug font texture

kraken/KRPipeline.cpp

@@ -533,6 +533,42 @@ bool KRPipeline::hasPushConstant(ShaderValue location) const
 }
 
 
+bool KRPipeline::setImageBindings(const std::vector<const KRReflectedObject*> objects)
+{
+  bool success = true;
+
+  for (int stage = 0; stage < static_cast<size_t>(ShaderStage::ShaderStageCount); stage++) {
+    StageInfo& stageInfo = m_stages[stage];
+    for (DescriptorSetInfo& descriptorSetInfo : stageInfo.descriptorSets) {
+      for (DescriptorBinding& binding : descriptorSetInfo.bindings) {
+        ImageDescriptorInfo* image = std::get_if<ImageDescriptorInfo>(&binding);
+        if (image) {
+          bool found = false;
+          const KRTextureBinding* binding = nullptr;
+          for (const KRReflectedObject* object : objects) {
+            KRSampler* sampler = nullptr;
+            if (object->getImageBinding(image->name, &binding, &sampler)) {
+              if (binding->isBound() && binding->get()->getStreamLevel() > kraken_stream_level::STREAM_LEVEL_OUT) {
+                image->texture = binding->get();
+                image->sampler = sampler;
+                found = true;
+              }
+              break;
+            }
+          }
+
+          if (!found) {
+            success = false;
+            KRContext::Log(KRContext::LOG_LEVEL_ERROR, "Image binding not found: %s", image->name.c_str());
+          }
+        }
+      }
+    }
+  }
+
+  return success;
+}
+
 bool KRPipeline::setPushConstants(const std::vector<const KRReflectedObject*> objects)
 {
   bool success = true;
@@ -642,31 +678,10 @@ void KRPipeline::updateDescriptorBinding()
 
 bool KRPipeline::updatePushConstants(KRNode::RenderInfo& ri, const Matrix4& matModel)
 {
-  KRDirectionalLight* directionalLight = nullptr;
-  if (ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_LIGHTS && ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_GBUFFER && ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_OPAQUE && ri.renderPass->getType() != RenderPassType::RENDER_PASS_SHADOWMAP) {
-    if (!ri.directional_lights.empty())
-    {
-      directionalLight = ri.directional_lights.front();
-    }
-  }
-  
-  KRModelView modelView(ri.viewport, matModel, directionalLight);
-
-  ri.reflectedObjects.push_back(&modelView);
-  ri.reflectedObjects.push_back(ri.viewport);
-  ri.reflectedObjects.push_back(&ri.camera->settings);
-
-  bool success = setPushConstants(ri.reflectedObjects);
-
-  ri.reflectedObjects.pop_back();
-  ri.reflectedObjects.pop_back();
-  ri.reflectedObjects.pop_back();
-
-  setPushConstant(ShaderValue::absolute_time, getContext().getAbsoluteTime());
-  
-  if (!success) {
+  if (!setPushConstants(ri.reflectedObjects)) {
     return false;
   }
+  setPushConstant(ShaderValue::absolute_time, getContext().getAbsoluteTime());
   
   for (StageInfo& stageInfo : m_stages) {
     PushConstantInfo& pushConstants = stageInfo.pushConstants;
@@ -680,19 +695,44 @@ bool KRPipeline::updatePushConstants(KRNode::RenderInfo& ri, const Matrix4& matM
 
 bool KRPipeline::bind(KRNode::RenderInfo& ri, const Matrix4& matModel)
 {
-  updateDescriptorBinding();
-  updateDescriptorSets();
-  bindDescriptorSets(ri.commandBuffer);
-  if (!updatePushConstants(ri, matModel)) {
-    return false;
+  bool success = true;
+  KRDirectionalLight* directionalLight = nullptr;
+  if (ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_LIGHTS && ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_GBUFFER && ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_OPAQUE && ri.renderPass->getType() != RenderPassType::RENDER_PASS_SHADOWMAP) {
+    if (!ri.directional_lights.empty()) {
+      directionalLight = ri.directional_lights.front();
+    }
   }
 
-  if (ri.pipeline != this) {
-    vkCmdBindPipeline(ri.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_graphicsPipeline);
-    ri.pipeline = this;
+  KRModelView modelView(ri.viewport, matModel, directionalLight);
+
+  ri.reflectedObjects.push_back(&modelView);
+  ri.reflectedObjects.push_back(ri.viewport);
+  ri.reflectedObjects.push_back(&ri.camera->settings);
+
+  if (success) {
+    success = updatePushConstants(ri, matModel);
   }
 
-  return true;
+  if (success) {
+    success = setImageBindings(ri.reflectedObjects);
+  }
+
+  if (success) {
+    updateDescriptorBinding();
+    updateDescriptorSets();
+    bindDescriptorSets(ri.commandBuffer);
+
+    if (ri.pipeline != this) {
+      vkCmdBindPipeline(ri.commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, m_graphicsPipeline);
+      ri.pipeline = this;
+    }
+  }
+
+  ri.reflectedObjects.pop_back();
+  ri.reflectedObjects.pop_back();
+  ri.reflectedObjects.pop_back();
+
+  return success;
 }
 
 void KRPipeline::updateDescriptorSets()

kraken/KRPipeline.h

@@ -221,6 +221,7 @@ public:
 
   static const size_t kPushConstantCount = static_cast<size_t>(ShaderValue::NUM_SHADER_VALUES);
 
+  bool setImageBindings(const std::vector<const KRReflectedObject*> objects);
   bool setPushConstants(const std::vector<const KRReflectedObject*> objects);
   bool hasPushConstant(ShaderValue location) const;
   void setPushConstant(ShaderValue location, float value);

kraken/KRShaderReflection.cpp

@@ -308,3 +308,8 @@ bool KRReflectedObject::getShaderValue(ShaderValue value, KRResourceBinding* out
 {
   return false;
 }
+
+bool KRReflectedObject::getImageBinding(const std::string& name, const KRTextureBinding** binding, KRSampler** sample) const
+{
+  return false;
+}

kraken/KRShaderReflection.h

@@ -33,9 +33,12 @@
 #pragma once
 
 #include <map>
+#include <string>
 #include "hydra.h"
 
 class KRResourceBinding;
+class KRSampler;
+class KRTextureBinding;
 
 enum class ShaderValueType : uint8_t
 {
@@ -221,6 +224,7 @@ class KRReflectedObject
 {
 public:
   bool getShaderValue(ShaderValue value, ShaderValueType type, void* output) const;
+  virtual bool getImageBinding(const std::string& name, const KRTextureBinding** binding, KRSampler** sample) const;
 protected:
   virtual bool getShaderValue(ShaderValue value, bool* output) const;
   virtual bool getShaderValue(ShaderValue value, int32_t* output) const;

kraken/nodes/KRCamera.cpp

@@ -90,7 +90,6 @@ KRCamera::KRCamera(KRScene& scene, std::string name)
   m_frame_times_filled = 0;
 
   m_fade_color = Vector4::Zero();
-  m_fontTexture.set("font");
 
   m_debug_text_vbo_data.init(m_pContext->getMeshManager(), &m_debug_text_vertices, nullptr, (1 << KRMesh::KRENGINE_ATTRIB_VERTEX) | (1 << KRMesh::KRENGINE_ATTRIB_TEXUVA), true, KRMeshManager::KRVBOData::IMMEDIATE
 #if KRENGINE_DEBUG_GPU_LABELS
@@ -146,7 +145,7 @@ void KRCamera::getResourceBindings(std::list<KRResourceBinding*>& bindings)
 
 void KRCamera::render(KRNode::RenderInfo& ri)
 {
-  KRScene& scene = getScene();
+  ri.reflectedObjects.push_back(this);
 
   switch (ri.renderPass->getType()) {
   case RenderPassType::RENDER_PASS_FORWARD_OPAQUE:
@@ -211,6 +210,9 @@ void KRCamera::render(KRNode::RenderInfo& ri)
     break;
   }
 
+  ri.reflectedObjects.pop_back();
+  
+  KRScene& scene = getScene();
   scene.render(ri);
 
   switch (ri.renderPass->getType()) {
@@ -479,6 +481,8 @@ void KRCamera::renderPost(RenderInfo& ri)
 
 void KRCamera::renderDebug(RenderInfo& ri)
 {
+  settings.m_debug_text = "Font Test"; // FNIDME!! KIPG!! HACK!! Debug text debugging...
+
   const char* szText = settings.m_debug_text.c_str();
   if (*szText == '\0') {
     if (m_debug_text_vertices.getSize() > 0) {
@@ -487,16 +491,6 @@ void KRCamera::renderDebug(RenderInfo& ri)
     return;
   }
 
-  if (!m_fontTexture.isBound())
-  {
-    return;
-  }
-
-  KRTexture* fontTexture = m_fontTexture.get();
-  if (fontTexture->getStreamLevel() == kraken_stream_level::STREAM_LEVEL_OUT) {
-    return;
-  }
-
   std::string debug_text;
   if (settings.debug_display != KRRenderSettings::KRENGINE_DEBUG_DISPLAY_NONE) {
     debug_text = getDebugText();;
@@ -631,7 +625,6 @@ void KRCamera::renderDebug(RenderInfo& ri)
   info.modelFormat = ModelFormat::KRENGINE_MODEL_FORMAT_TRIANGLES;
   KRPipeline* fontShader = m_pContext->getPipelineManager()->getPipeline(*ri.surface, info);
       
-  fontShader->setImageBinding("fontTexture", fontTexture, getContext().getSamplerManager()->DEFAULT_CLAMPED_SAMPLER);
   if (fontShader->bind(ri, Matrix4())) {
     
     m_debug_text_vbo_data.bind(ri.commandBuffer);
@@ -859,8 +852,17 @@ bool KRCamera::getShaderValue(ShaderValue value, hydra::Vector4* output) const
   default:
     return KRNode::getShaderValue(value, output);
   }
+}
 
-  
+bool KRCamera::getImageBinding(const std::string& name, const KRTextureBinding** binding, KRSampler** sample) const
+{
+  if (name == "fontTexture") {
+    *binding = &m_fontTexture;
+    *sample = getContext().getSamplerManager()->DEFAULT_CLAMPED_SAMPLER;
+    return true;
+  } else {
+    return KRNode::getImageBinding(name, binding, sample);
+  }
 }
 
 bool KRCamera::alwaysStreamResources()

kraken/nodes/KRCamera.h

@@ -86,6 +86,7 @@ public:
 
 protected:
   bool getShaderValue(ShaderValue value, hydra::Vector4* output) const override;
+  bool getImageBinding(const std::string& name, const KRTextureBinding** binding, KRSampler** sample) const override;
 
 private:
   void createBuffers(int renderBufferWidth, int renderBufferHeight);

kraken/resources/KRResourceBinding.cpp

@@ -60,7 +60,7 @@ void KRResourceBinding::submitRequest(KRContext* context, std::list<KRResourceRe
   }
 }
 
-KRResource* KRResourceBinding::get()
+KRResource* KRResourceBinding::get() const
 {
   return m_resource;
 }

kraken/resources/KRResourceBinding.h

@@ -47,7 +47,7 @@ public:
 
   void submitRequest(KRContext* context, std::list<KRResourceRequest>& resourceRequests, float lodCoverage = 0.f);
 
-  KRResource* get();
+  KRResource* get() const;
   void set(KRResource* resource);
   void set(const std::string& name);
   bool isSet() const;

kraken/resources/texture/KRTextureBinding.cpp

@@ -46,7 +46,7 @@ KRTextureBinding::KRTextureBinding(KRTexture::texture_usage_t usage)
 
 }
 
-KRTexture* KRTextureBinding::get()
+KRTexture* KRTextureBinding::get() const
 {
   return static_cast<KRTexture*>(m_resource);
 }

kraken/resources/texture/KRTextureBinding.h

@@ -42,7 +42,7 @@ class KRTextureBinding : public KRResourceBinding
 public:
   KRTextureBinding(const std::string& name, KRTexture::texture_usage_t usage);
   KRTextureBinding(KRTexture::texture_usage_t usage);
-  KRTexture* get();
+  KRTexture* get() const;
 
   bool bind(KRContext* context) override final;
 private: