Implementation of the ConvertImageToTexture function

src/myutils/texture_utils.cpp

@@ -0,0 +1,105 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+#include <utils/logger.h>
+#include "texture_utils.h"
+#include <wups.h>
+#include <gd.h>
+#include <dynamic_libs/gx2_functions.h>
+#include <dynamic_libs/gx2_types.h>
+#include "mem_utils.h"
+
+void gdImageToUnormR8G8B8A8(gdImagePtr gdImg, u32 *imgBuffer, u32 width, u32 height, u32 pitch){
+    for(u32 y = 0; y < height; ++y)
+    {
+        for(u32 x = 0; x < width; ++x)
+        {
+			u32 pixel = gdImageGetPixel(gdImg, x, y);
+
+			u8 a = 254 - 2*((u8)gdImageAlpha(gdImg, pixel));
+			if(a == 254) a++;
+
+            u8 r = gdImageRed(gdImg, pixel);
+            u8 g = gdImageGreen(gdImg, pixel);
+            u8 b = gdImageBlue(gdImg, pixel);
+
+            imgBuffer[y * pitch + x] = (r << 24) | (g << 16) | (b << 8) | (a);
+        }
+    }
+}
+
+bool TextureUtils::convertImageToTexture(const uint8_t *img, int32_t imgSize, void * _texture){
+    if(!img || (imgSize < 8) || _texture == NULL){
+        return false;
+    }
+    GX2Texture * texture = (GX2Texture *) _texture;
+
+    gdImagePtr gdImg = 0;
+
+    if (img[0] == 0xFF && img[1] == 0xD8) {
+        //! not needed for now therefore comment out to safe ELF size
+        //! if needed uncomment, adds 200 kb to the ELF size
+        // IMAGE_JPEG
+        gdImg = gdImageCreateFromJpegPtr(imgSize, (uint8_t*) img);
+    } else if (img[0] == 'B' && img[1] == 'M') {
+        // IMAGE_BMP
+        //gdImg = gdImageCreateFromBmpPtr(imgSize, (uint8_t*) img);
+    } else if (img[0] == 0x89 && img[1] == 'P' && img[2] == 'N' && img[3] == 'G') {
+        // IMAGE_PNG
+        gdImg = gdImageCreateFromPngPtr(imgSize, (uint8_t*) img);
+    }
+    //!This must be last since it can also intefere with outher formats
+    else if(img[0] == 0x00) {
+        // Try loading TGA image
+        //gdImg = gdImageCreateFromTgaPtr(imgSize, (uint8_t*) img);
+    }
+
+    if(gdImg == 0){
+        return false;
+    }
+
+    uint32_t width = (gdImageSX(gdImg));
+    uint32_t height = (gdImageSY(gdImg));
+
+    //! Initialize texture
+    GX2InitTexture(texture, width,  height, 1, 0, GX2_SURFACE_FORMAT_TCS_R8_G8_B8_A8_UNORM, GX2_SURFACE_DIM_2D, GX2_TILE_MODE_LINEAR_ALIGNED);
+
+    //! if this fails something went horribly wrong
+    if(texture->surface.image_size == 0) {
+        gdImageDestroy(gdImg);
+        return false;
+    }
+
+    texture->surface.image_data = MemoryUtils::alloc(texture->surface.image_size, texture->surface.align);
+
+    //! check if memory is available for image
+    if(!texture->surface.image_data) {
+        gdImageDestroy(gdImg);
+        return false;
+    }
+
+    //! set mip map data pointer
+    texture->surface.mip_data = NULL;
+
+    gdImageToUnormR8G8B8A8(gdImg, (uint32_t*)texture->surface.image_data, texture->surface.width, texture->surface.height, texture->surface.pitch);
+
+    //! free memory of image as its not needed anymore
+    gdImageDestroy(gdImg);
+
+    //! invalidate the memory
+    GX2Invalidate(GX2_INVALIDATE_CPU_TEXTURE, texture->surface.image_data, texture->surface.image_size);
+    return true;
+}

src/myutils/texture_utils.h

@@ -0,0 +1,31 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+#ifndef __TEXTURE_UTILS_UTILS_H_
+#define __TEXTURE_UTILS_UTILS_H_
+#include <stdint.h>
+#include <dynamic_libs/gx2_functions.h>
+
+class TextureUtils {
+public:
+    static bool convertImageToTexture(const uint8_t *img, int32_t imgSize, void * texture);
+
+private:
+    TextureUtils() {}
+    ~TextureUtils() {}
+
+};
+#endif

src/utils.cpp

@@ -15,6 +15,7 @@
 #include "common/retain_vars.h"
 #include "myutils/overlay_helper.h"
 #include "myutils/mem_utils.h"
+#include "myutils/texture_utils.h"
 #include "kernel/syscalls.h"
 
 void CallHook(wups_loader_hook_type_t hook_type) {
@@ -67,6 +68,7 @@ void CallHookEx(wups_loader_hook_type_t hook_type, int32_t plugin_index_needed)
                     } else if(hook_type == WUPS_LOADER_HOOK_INIT_OVERLAY) {
                         wups_loader_init_overlay_args_t args;
                         args.overlayfunction_ptr = &overlay_helper;
+                        args.textureconvertfunction_ptr = &TextureUtils::convertImageToTexture;
                         ((void (*)(wups_loader_init_overlay_args_t))((uint32_t*)func_ptr) )(args);
                     } else if(hook_type == WUPS_LOADER_HOOK_INIT_PLUGIN) {
                         ((void (*)(void))((uint32_t*)func_ptr) )();