添加输出图片为png格式的支持

CMakeLists.txt

@@ -9,6 +9,7 @@ include_directories(external)
 include_directories(external/glm)
 include_directories(external/gli)
 include_directories(external/imgui)
+include_directories(external/stb)
 include_directories(external/tinygltf)
 include_directories(external/ktx/include)
 include_directories(external/ktx/other_include)

base/vulkanexamplebase.h

@@ -119,7 +119,7 @@ public:
 		bool multiSampling = true; // 多重采样
 		bool rotateModel = true; // 模型自旋转(暂时失效)
 		bool headless = false; // 无头开关
-
+		bool outputPNGimage = true;
 		bool enableSaveToImageSequeue = false; // 图片序列开关（暂时弃用）
 		uint32_t outputFrameCount = 75; // 图片序列结束帧
 		bool takeScreenShot = false; // 截屏（暂时弃用）

src/render/render.cpp

@@ -1755,42 +1755,55 @@ PlumageRender::PlumageRender()
 		vkMapMemory(device, dstImageMemory, 0, VK_WHOLE_SIZE, 0, (void**)&data);
 		data += subResourceLayout.offset;
 
-		std::ofstream file(filePath, std::ios::out | std::ios::binary);
 
-		// ppm header
+		if (settings.outputPNGimage)
-		file << "P6\n" << width << "\n" << height << "\n" << 255 << "\n";
-
-		// If source is BGR (destination is always RGB) and we can't use blit (which does automatic conversion), we'll have to manually swizzle color components
-		bool colorSwizzle = false;
-		// Check if source is BGR
-		// Note: Not complete, only contains most common and basic BGR surface formats for demonstration purposes
-		if (!supportsBlit)
 		{
-			std::vector<VkFormat> formatsBGR = { VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_B8G8R8A8_SNORM };
+			stbi_write_png(filePath.c_str(), width, height, 4, data, static_cast<int>(subResourceLayout.rowPitch));
-			colorSwizzle = (std::find(formatsBGR.begin(), formatsBGR.end(), swapChain.colorFormat) != formatsBGR.end());
 		}
-
+		else
-		// ppm binary pixel data
-		for (uint32_t y = 0; y < height; y++)
 		{
-			unsigned int* row = (unsigned int*)data;
+
-			for (uint32_t x = 0; x < width; x++)
+			std::ofstream file(filePath, std::ios::out | std::ios::binary);
+
+			// ppm header
+			file << "P6\n" << width << "\n" << height << "\n" << 255 << "\n";
+
+			// If source is BGR (destination is always RGB) and we can't use blit (which does automatic conversion), we'll have to manually swizzle color components
+			bool colorSwizzle = false;
+			// Check if source is BGR
+			// Note: Not complete, only contains most common and basic BGR surface formats for demonstration purposes
+			if (!supportsBlit)
 			{
-				if (colorSwizzle)
+				std::vector<VkFormat> formatsBGR = { VK_FORMAT_B8G8R8A8_SRGB, VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_B8G8R8A8_SNORM };
-				{
+				colorSwizzle = (std::find(formatsBGR.begin(), formatsBGR.end(), swapChain.colorFormat) != formatsBGR.end());
-					file.write((char*)row + 2, 1);
-					file.write((char*)row + 1, 1);
-					file.write((char*)row, 1);
-				}
-				else
-				{
-					file.write((char*)row, 3);
-				}
-				row++;
 			}
-			data += subResourceLayout.rowPitch;
+
+
+		
+			// ppm binary pixel data
+			for (uint32_t y = 0; y < height; y++)
+			{
+				unsigned int* row = (unsigned int*)data;
+				for (uint32_t x = 0; x < width; x++)
+				{
+					if (colorSwizzle)
+					{
+						file.write((char*)row + 2, 1);
+						file.write((char*)row + 1, 1);
+						file.write((char*)row, 1);
+					}
+					else
+					{
+						file.write((char*)row, 3);
+					}
+					row++;
+				}
+				data += subResourceLayout.rowPitch;
+			}
+			file.close();
 		}
-		file.close();
+
+		
 
 		std::cout << "Screenshot saved to " << filePath << std::endl;
 
@@ -1821,7 +1834,18 @@ PlumageRender::PlumageRender()
 				return;
 			}
 			signal.imageSequenceOutputComplete = true;
-			std::string fileName = "/%dresult.ppm";
+
+			std::string fileName;
+
+			if (settings.outputPNGimage)
+			{
+				fileName = "/%dresult.png";
+			}
+			else
+			{
+				fileName = "/%dresult.ppm";
+			}
+			
 			filePath.totalImageOutputPath = filePath.deviceSpecFilePath + fileName;
 			return;
 		}
@@ -1829,7 +1853,16 @@ PlumageRender::PlumageRender()
 		{
 			std::filesystem::create_directories(filePath.deviceSpecFilePath.c_str());
 		}
-		std::string fileName ="/" + std::to_string(savedFrameCounter) + "result.ppm";
+		std::string fileNameSuffix;
+		if (settings.outputPNGimage)
+		{
+			fileNameSuffix = "result.png";
+		}
+		else
+		{
+			fileNameSuffix = "dresult.ppm";
+		}
+		std::string fileName ="/" + std::to_string(savedFrameCounter) + fileNameSuffix;
 		filePath.totalImageOutputPath = filePath.deviceSpecFilePath + fileName;
 		//std::cout << outputPath << std::endl;
 		writeImageToFile(filePath.totalImageOutputPath.c_str());

src/render/render.h

@@ -9,6 +9,9 @@
 #include<dirent.h>
 #endif
 
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb/stb_image_write.h"
+
 
 
 #include <stdio.h>