WIP Binding vertex buffers

kraken/KRMeshManager.cpp

@@ -865,3 +865,16 @@ void KRMeshManager::primeVBO(KRVBOData *vbo_data)
         m_vbosActive[vbo_data->m_data] = vbo_data;
     }
 }
+
+
+VkBuffer& KRMeshManager::KRVBOData::getVertexBuffer()
+{
+  assert(m_is_vbo_ready);
+  return m_allocations->vertex_buffer;
+}
+
+VkBuffer& KRMeshManager::KRVBOData::getIndexBuffer()
+{
+  assert(m_is_vbo_ready);
+  return m_allocations->index_buffer;
+}

kraken/KRMeshManager.h

@@ -112,6 +112,9 @@ public:
         
         void _swapHandles();
 
+        VkBuffer& getVertexBuffer();
+        VkBuffer& getIndexBuffer();
+        
     private:
         KRMeshManager *m_manager;
         int m_vertex_attrib_flags;

kraken/KRPipeline.cpp

@@ -184,12 +184,32 @@ KRPipeline::KRPipeline(KRContext& context, KrDeviceHandle deviceHandle, VkFormat
     // failed! TODO - Error handling
   }
 
+  // TODO - Make bindings dynamic...
+  VkVertexInputBindingDescription bindingDescription{};
+  bindingDescription.binding = 0;
+  bindingDescription.stride = sizeof(float) * 3 + sizeof(uint16_t) * 2;
+  bindingDescription.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+  const int kMaxVertexDescriptions = 16;
+  VkVertexInputAttributeDescription vertexAttributeDescriptions[kMaxVertexDescriptions]{};
+  // position
+  vertexAttributeDescriptions[0].binding = 0;
+  vertexAttributeDescriptions[0].location = 0;
+  vertexAttributeDescriptions[0].format = VK_FORMAT_R32G32B32_SFLOAT;
+  vertexAttributeDescriptions[0].offset = 0;
+
+  // uv
+  vertexAttributeDescriptions[1].binding = 0;
+  vertexAttributeDescriptions[1].location = 1;
+  vertexAttributeDescriptions[1].format = VK_FORMAT_R32G32_SFLOAT;
+  vertexAttributeDescriptions[1].offset = sizeof(float) * 3;
+
   VkPipelineVertexInputStateCreateInfo vertexInputInfo{};
   vertexInputInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
-  vertexInputInfo.vertexBindingDescriptionCount = 0;
-  vertexInputInfo.pVertexBindingDescriptions = nullptr; // TODO
-  vertexInputInfo.vertexAttributeDescriptionCount = 0;
-  vertexInputInfo.pVertexAttributeDescriptions = nullptr; // TODO
+  vertexInputInfo.vertexBindingDescriptionCount = 1;
+  vertexInputInfo.pVertexBindingDescriptions = &bindingDescription;
+  vertexInputInfo.vertexAttributeDescriptionCount = 2;
+  vertexInputInfo.pVertexAttributeDescriptions = vertexAttributeDescriptions;
 
   VkPipelineInputAssemblyStateCreateInfo inputAssembly{};
   inputAssembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;

kraken/KRPresentationThread.cpp

@@ -141,6 +141,9 @@ void KRPresentationThread::renderFrame()
     VkCommandBuffer commandBuffer = device.m_graphicsCommandBuffers[imageIndex];
     KRPipeline* testPipeline = m_pContext->getPipelineManager()->get("vulkan_test");
 
+    KRMeshManager::KRVBOData& testVertices = getContext().getMeshManager()->KRENGINE_VBO_DATA_2D_SQUARE_VERTICES;
+    bool haveMesh = testVertices.isVBOReady();
+
     VkCommandBufferBeginInfo beginInfo{};
     beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
     beginInfo.flags = 0;
@@ -164,7 +167,14 @@ void KRPresentationThread::renderFrame()
 
     vkCmdBeginRenderPass(commandBuffer, &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
     vkCmdBindPipeline(commandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, testPipeline->getPipeline());
+    if (haveMesh) {
+
+      VkBuffer vertexBuffers[] = { testVertices.getVertexBuffer() };
+      VkDeviceSize offsets[] = { 0 };
+      vkCmdBindVertexBuffers(commandBuffer, 0, 1, vertexBuffers, offsets);
       vkCmdDraw(commandBuffer, 3, 1, 0, 0);
+    }
+
     vkCmdEndRenderPass(commandBuffer);
     if (vkEndCommandBuffer(commandBuffer) != VK_SUCCESS) {
       m_activeState = PresentThreadState::error;