zztexview is now open source

.editorconfig

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+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+[*.{c,h,ch}]
+charset = utf-8
+indent_style = tab
+indent_size = 3
+trim_trailing_whitespace = false
+
+[*.md]
+trim_trailing_whitespace = false
+

.gitignore

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+bin/
+*.o

README.md

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+# zztexview
+
+`zztexview` is a program for viewing, converting, and locating texture data in Nintendo 64 rom images and files dumped from them. Much inspiration was taken from [Texture64](https://github.com/queueRAM/Texture64).
+
+![preview.png](preview.png)
+
+## Features
+ - Texture search locates pixel data matching a user-provided PNG file (even color-indexed formats are supported)
+ - Export/import feature makes it easy to update existing textures
+ - Create new texture banks from one or more PNGs, including the ability to share palettes
+ - External palettes
+ - Palette editing
+ - Entirely self-contained with no external dependencies like the .NET Framework or Mono
+ - Windows XP
+
+## Supported Image Formats
+ - rgba8888 (32 bit)
+ - rgba5551 (16 bit)
+ - intensity-alpha (16 bit)
+ - intensity-alpha (8 bit)
+ - intensity-alpha (4 bit)
+ - intensity (8 bit)
+ - intensity (4 bit)
+ - color-indexed (8 bit)
+ - color-indexed (4 bit)
+
+## Quick Tips
+ - First, click the `Open` button, or drag-and-drop a binary file onto the `left pane`.
+ - Left-click any preview to bring up the `Import/Export PNG` dialog.
+ - Right-click-drag in any preview window to scroll quickly.
+ - Using the mouse wheel inside a preview window nudges it along one pixel at a time: perfect for making fine adjustments.
+ - In a value box, you can right-click-drag up/down to rapidly change it, or use the mouse wheel for smaller increments.
+ - Scroll the mouse wheel on any drop-down menu to quickly navigate through its items without having to click.
+
+## Revision History
+* v1.0.2
+   * Better `edge` results with `i` (intensity) formats
+   * In exported images, alpha channel is user's selected 'blending' mode
+   * `zztexview` is now open source
+* v1.0.1
+   * Bug fix: could not edit value/text boxes after clicking drop-downs
+   * Bug fix: "Scale" drop-down text now wraps properly when scrolling on it
+   * Bug report credits: [AriaHiro64](https://github.com/AriaHiro64), [Zeldaboy14](https://github.com/Zeldaboy14)
+* v1.0.0
+   * Initial release
+
+## Manual
+```
+SYNOPSIS
+
+      zztexview is a program for viewing, converting, and locating
+   texture data in Nintendo 64 rom images and files dumped from them.
+   Much inspiration was taken from Texture64.
+
+
+LOADING FILES
+
+      To open a file for exploring, either click the 'Open' button
+   or the left sidebar, or try dropping a file onto one of them.
+
+
+NAVIGATION
+
+      While you can edit the value boxes manually by clicking them, you
+   will find the easiest way to navigate is by doing a right-click-drag
+   inside any preview window. You do this by placing your cursor inside
+   a preview, pressing and holding the right mouse button, then moving
+   the cursor up or down. You can also do this inside a value box to
+   quickly adjust its value up or down, or even navigate this manual.
+   
+      Scrolling with the mouse wheel can also be used to adjust value
+   box values, or quickly change a drop-down menu's selection without
+   having to click it. Mouse wheel scrolling inside a preview area will
+   nudge you forward or back a single pixel at a time.
+
+
+HOW CODECS WORK
+
+      Each codec describes a valid format/bit combination. For example,
+   ci8 refers to a texture of the format ci (color indexed), where each
+   pixel is eight (8) bits. Higher bit values provide more detail, but
+   cost more space. A brief description of each format follows.
+   
+      rgba     contains a separate color/alpha value for every pixel
+      
+      ci       a series of index values, which are used to look up
+               what color each pixel should be according to a palette
+               (the palette offset is independent from the texture
+               offset; multiple textures can use the same palette)
+      
+      ia       packed value list describing intensity (grayscale)
+               and alpha (opacity) for every pixel
+      
+      i        every pixel contains a single value that is shared
+               by all color channels: RGBA (whiter = more opaque)
+
+
+CI PALETTE
+
+      The 'CI Palette' pane contains a palette data preview. You can
+   adjust the number of colors within it for safer editing, if you
+   happen to know how many colors the one you're editing contains.
+   All the same navigation rules described above apply here.
+   
+      If for some reason you must load a palette from a separate file,
+   you can do so by clicking or dropping a file onto the 'Load External
+   Palette' button.
+   
+      Otherwise, it will source palette data from whatever file is
+   already loaded, since storing textures and palettes in the same
+   file is a common practice.
+   
+      'Palette Override' and what role palettes play when importing
+   textures are both explained in the next section.
+
+
+CHANGING TEXTURES & PALETTES
+
+      You can click any preview (palette or texture) to open the image
+   action dialog. Click 'Export PNG' inside this dialog and follow the
+   prompt. Edit this file in your external editor of choice.
+   
+      To import the modified PNG, click the same preview as before, and
+   select 'Import PNG'. You will be asked to select the PNG you wish to
+   import. Note that if you are importing over a CI format texture, the
+   colors will be matched to the palette shown in the 'CI Palette' pane
+   as closely as possible. If you want a new palette to be generated
+   instead, enable the 'Palette Override' option before conversion. Be
+   mindful that the old palette will be overwritten if you do this,
+   which will break all other textures that use it if it is shared.
+   
+      If you are making major changes to a CI texture (aka, using a new
+   palette), it is recommended that you modify the palette before you
+   import the new texture. Also be aware that a palette can be shared
+   by multiple textures, so be prepared to import updated versions of
+   all textures that rely on any palette you update.
+   
+      As a final note, any texture imported this way will use the
+   'AlphaColor' generation settings that have been selected within the
+   'Texture Convert' pane, described below.
+
+
+TEXTURE CONVERT
+
+      First and foremost: the 'Texture Convert' pane is not for
+   importing textures and palettes into the currently opened file.
+   It is for creating a brand new file containing only textures. If
+   changing textures in an existing file is what you're looking for,
+   read the section above this one. That said, only a small niche has
+   use for either of these features.
+
+      This pane allows you to convert one or more PNGs to a valid
+   codec. Simply click or drop PNGs onto the 'New File from PNGs'
+   button. You can hold the 'Ctrl' key on your keyboard when clicking
+   files to select multiple. If everything goes well, you should get a
+   preview of the results, and be able to copy notes to your clipboard
+   if you wish. To actually save the generated file somewhere, click
+   the 'Save As' button in the upper corner of the window.
+   
+      When multiple PNGs are specified and the codec is a CI format,
+   they are all optimized to use a shared palette, instead of one
+   palette being derived for each.
+   
+   AlphaColor
+   
+         Older converters have a track record of mishandling textures
+      containing transparency, such that you will notice white or black
+      outlines along the edges of your textures in-game. This is because
+      they are setting the colors of invisible pixels to white or black.
+      The 'AlphaColor' menu offers algorithms that are meant to address
+      this problem. Each is briefly described below:
+         
+         edge     derives alpha colors by expanding visible edge colors
+         
+         average  the alpha color used across the texture
+                  is the average of all its visible colors
+         
+         white    every invisible pixel's color is set to white
+         
+         black    every invisible pixel's color is set to black
+         
+         image    use invisible pixel colors that are stored in the PNG
+                * NOTE: if the number of unique invisible colors exeeds
+                        the value of AlphaColorMax, it falls back to
+                        the 'edge' algorithm
+   
+   AlphaColorMax
+   
+         This is the maximum number of unique alpha colors to allow
+      in the generated palette (applies to CI formats only).
+
+
+TEXTURE SEARCH
+
+      Use the 'Texture Search' pane to search the loaded file for any
+   texture data that matches the PNG you provide. This is useful for
+   locating rom offsets of textures dumped by video plugins.
+   
+      If an external palette has been loaded loaded, that will be
+   searched for palette data instead of the primary file.
+   
+      When matches are found, they are displayed immediately. Use the
+   'Results' drop-down to browse the results. A result containing 'P'
+   (for example, 'ci8-P') indicates a partial match. Partial matches
+   happen only for CI formats, and occur when matching CI data was
+   located, but no palette could be found. You can copy the results
+   to your clipboard by clicking the 'Results -> Clipboard' button.
+   
+   Two additional codecs are introduced here:
+   
+      auto    search only for codecs that are most likely to match
+              the provided PNG (this has proved to be extremely
+              accurate throughout my rigorous testing)
+      
+      all     search every codec (this is slower and only recommended
+              for textures that 'auto' fails to find matches for)
+   
+      * The other codecs in this drop-down force it to search for the
+        one codec you specify. This is most useful if you already
+        know the codec of the texture you're trying to find.
+   
+   Mode
+   
+      1st match   searches only up until it finds a match, then stops
+      
+      find all    this is slower, but if you want to locate multiple
+                  occurrences of the same texture, use this
+
+
+FAQ
+
+  Q: What is this blend feature?
+  A: It allows you to see the colors of invisible pixels. The blending
+     mode you have selected also controls how a texture appears when
+     exported to PNG.
+
+  Q: What is the EOF toggle in the corner for?
+  A: Files are padded at the end, which can sometimes be misleading.
+     For this reason, I found it helpful to offer the option of
+     customizing what value is used for padding the loaded file.
+
+
+                                <z64.me>
+```
+

common.sh

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+echo "-DNDEBUG -Wall -Wno-unused-function -Wno-deprecated-declarations -flto -lm -Os -s -flto -Iwowlib -DWOW_OVERLOAD_FILE src/*.c -Isrc "

release-linux.sh

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+mkdir -p bin/release
+
+gcc -o bin/release/zztexview-linux `./common.sh` `wowlib/deps/wow_gui_x11.sh`
+

release-win32.sh

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+mkdir -p bin/release
+mkdir -p bin/o/win32
+
+PATH=$PATH:~/c/mxe/usr/bin
+
+# icon
+i686-w64-mingw32.static-windres src/icon.rc -o bin/o/win32/icon.o
+
+i686-w64-mingw32.static-gcc -o bin/release/zztexview-win32.exe `./common.sh` \
+	-municode \
+	`wowlib/deps/wow_gui_win32.sh` \
+	bin/o/win32/icon.o
+

src/common.h

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+/*
+ * common.h <z64.me>
+ *
+ * things shared between GUI and eventual CLI version
+ *
+ */
+
+#ifndef TEXVIEW_COMMON_H_INCLUDED
+
+#define TEXVIEW_COMMON_H_INCLUDED
+
+#define  PROGNAME    "zztexview"
+#define  PROGVER     "v1.0.2"
+#define  PROGATTRIB  "<z64.me>"
+#define  PROG_NAME_VER_ATTRIB PROGNAME" "PROGVER" "PROGATTRIB
+
+#include "stb_image.h"
+#include "stb_image_write.h"
+
+/* line ending used for log file generation */
+#ifdef _WIN32
+#	define ENDLINE "\r\n"
+#else
+#	define ENDLINE "\n"
+#endif
+
+#endif
+