From b0b61c117c6e2bc7693802f005a2888e7cc073c2 Mon Sep 17 00:00:00 2001
From: Frederico Linhares <fred@linhares.blue>
Date: Wed, 28 Dec 2022 11:23:00 -0300
Subject: refa Use QOI image format for textures

---
 src/vk/texture.cpp | 44 +++++++++++++++++---------------------------
 1 file changed, 17 insertions(+), 27 deletions(-)

(limited to 'src/vk')

diff --git a/src/vk/texture.cpp b/src/vk/texture.cpp
index 54cf801..020dd21 100644
--- a/src/vk/texture.cpp
+++ b/src/vk/texture.cpp
@@ -16,6 +16,9 @@
 
 #include "texture.hpp"
 
+#define QOI_IMPLEMENTATION 0
+#include <qoi.h>
+
 #include "../command.hpp"
 #include "../core.hpp"
 #include "image.hpp"
@@ -76,42 +79,29 @@ load_image(void *obj)
 {
   auto self = static_cast<TextureBuilder*>(obj);
 
-  SDL_Surface *image{nullptr};
-
-  // Load file image from file.
-  {
-    SDL_Surface *raw_surface{nullptr};
-    raw_surface = IMG_Load(self->texture_path.c_str());
-    if(raw_surface == nullptr)
-    {
-      std::string error{"Failed to load image. SDL2_image Error: "};
-      error += IMG_GetError();
-      throw CommandError{error};
-    }
+  qoi_desc img_desc;
+  const int num_channels = 4; // all images are converted to RGBA
+  unsigned char *pixels;
 
-    image = SDL_ConvertSurfaceFormat(raw_surface, SDL_PIXELFORMAT_ARGB8888, 0);
-    if(image == nullptr)
-    {
-      std::string error{"Failed to convert image. SDL2 Error: "};
-      error += SDL_GetError();
-      throw CommandError{error};
-    }
+  { // Load file image from file.
+    void *pixels_ptr = qoi_read(self->texture_path.c_str(), &img_desc, 4);
+    if(pixels_ptr == NULL) throw CommandError{"Failed to open image."};
 
-    self->texture->width = static_cast<uint32_t>(image->w);
-    self->texture->height = static_cast<uint32_t>(image->h);
+    pixels = static_cast<unsigned char*>(pixels_ptr);
+    self->texture->width = static_cast<uint32_t>(img_desc.width);
+    self->texture->height = static_cast<uint32_t>(img_desc.height);
     self->texture->mip_levels = 1;
 
-    SDL_FreeSurface(raw_surface);
+    pixels = static_cast<unsigned char*>(pixels_ptr);
   }
 
   // Load file image into a vulkan buffer.
   size_t image_size{static_cast<size_t>(
-      image->format->BytesPerPixel * image->w * image->h)};
+      img_desc.width * img_desc.height * num_channels)};
   VK::SourceBuffer source_image_buffer{
-    cg_core.vk_device_with_swapchain, image->pixels, image_size};
+    cg_core.vk_device_with_swapchain, pixels, image_size};
 
-  // Create vulkan image.
-  {
+  { // Create vulkan image.
     try
     {
       VkExtent3D vk_extent3d{};
@@ -176,7 +166,7 @@ load_image(void *obj)
   }
 
   // Free resources.
-  SDL_FreeSurface(image);
+  QOI_FREE(pixels);
 }
 
 void
-- 
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