优化内存读取

vulkan/FaceApp.cpp

@@ -1,5 +1,6 @@
 #include "FaceApp.h"
 #include "hardcode_data.h"
+#include "lodepng.h"
 #include <sstream>
 #include <queue>
 #include <vector>
@@ -721,12 +722,18 @@ void FaceApp::initVulkan()
 	{
 		m_texs_ex.resize(kMaxTexture);
 	}
+
+	std::vector<unsigned char> data = readFileUnsignedChar("demo0.png", false);
+	std::vector<unsigned char> image;
+	unsigned w, h;
+	unsigned error = lodepng::decode(image, w, h, data, LCT_RGBA, 8);
+
 	for (int i = 0; i < kMaxTexture; ++i)
 	{
-		loadTexture("demo0.png", m_texs[i], true);
+		loadTexture(image, image.size(), w, h, m_texs[i], true);
 		if (kThick)
 		{
-			loadTexture("demo0_ex.png", m_texs_ex[i], true);
+			loadTexture(image, image.size(), w, h, m_texs_ex[i], true);
 		}
 	}
 	
@@ -1142,6 +1149,16 @@ void FaceApp::destroyTexture(VkDevice device, Texture& texture) {
 		vkFreeMemory(device, texture.device_memory, nullptr);
 		texture.device_memory = VK_NULL_HANDLE;
 	}
+
+	if (texture.stagingBuffer != VK_NULL_HANDLE)
+	{
+		vkDestroyBuffer(device, texture.stagingBuffer, nullptr);
+	}
+	
+	if (texture.stagingBufferMemory != VK_NULL_HANDLE)
+	{
+		vkFreeMemory(device, texture.stagingBufferMemory, nullptr);
+	}
 }
 
 void FaceApp::cleanupResources(VkDevice device, VmaAllocator allocator) {