Thraix
3d4a97103c
- Add submodule freetype - Add submodule glfw3 - Add submodule glm - Add submodule msdfgen-atlas-gen - Add submodule msdfgen-core - Add submodule msdfgen-ext - Add submodule stb
73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
#include "copium/sampler/Texture2D.h"
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#include "copium/core/Vulkan.h"
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#include "copium/sampler/Image.h"
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#define STB_IMAGE_IMPLEMENTATION
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#include <stb_image.h>
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#include <fstream>
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namespace Copium
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{
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Texture2D::Texture2D(const MetaFile& metaFile)
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{
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const std::string& filepath = metaFile.GetMetaClass("Texture2D").GetValue("filepath");
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CP_DEBUG("Loading texture file: %s", filepath.c_str());
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InitializeTextureImageFromFile(filepath);
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}
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Texture2D::Texture2D(const std::vector<uint8_t>& rgbaData, int width, int height)
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{
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CP_ASSERT(rgbaData.size() == width * height * 4, "rgbaData has invalid size, should be equal to width * height * 4 (%d) actually is %d", width * height * 4, rgbaData.size());
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InitializeTextureImageFromData(rgbaData.data(), width, height);
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}
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Texture2D::~Texture2D()
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{
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vkDestroyImage(Vulkan::GetDevice(), image, nullptr);
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vkFreeMemory(Vulkan::GetDevice(), imageMemory, nullptr);
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vkDestroyImageView(Vulkan::GetDevice(), imageView, nullptr);
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}
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VkDescriptorImageInfo Texture2D::GetDescriptorImageInfo(int index) const
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{
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VkDescriptorImageInfo imageInfo{};
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imageInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
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imageInfo.sampler = sampler;
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imageInfo.imageView = imageView;
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return imageInfo;
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}
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void Texture2D::InitializeTextureImageFromFile(const std::string& filename)
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{
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stbi_set_flip_vertically_on_load(true);
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int texWidth;
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int texHeight;
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int texChannels;
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stbi_uc* pixels = stbi_load(filename.c_str(), &texWidth, &texHeight, &texChannels, STBI_rgb_alpha);
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CP_ASSERT(pixels, "Failed to load texture image");
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InitializeTextureImageFromData(pixels, texWidth, texHeight);
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stbi_image_free(pixels);
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}
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void Texture2D::InitializeTextureImageFromData(const uint8_t* rgbaData, int width, int height)
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{
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VkDeviceSize bufferSize = width * height * 4;
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Buffer stagingBuffer{VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, bufferSize, 1};
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void* data = stagingBuffer.Map();
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memcpy(data, rgbaData, bufferSize);
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stagingBuffer.Unmap();
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Image::InitializeImage(width, height, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &image, &imageMemory);
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Image::TransitionImageLayout(image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_UNDEFINED, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
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Image::CopyBufferToImage(stagingBuffer, image, width, height);
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Image::TransitionImageLayout(image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
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imageView = Image::InitializeImageView(image, VK_FORMAT_R8G8B8A8_SRGB, VK_IMAGE_ASPECT_COLOR_BIT);
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}
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}
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