Added Image.cake for stb_image

src/Image.cake

@@ -0,0 +1,36 @@
+;; Image
+;; Interface for loading images of various formats
+;; Currently, stb_image.h does all the heavy lifting
+(import &comptime-only "STB.cake")
+(use-stb-image clone-stb-headers-image)
+
+(comptime-cond
+ ('auto-test
+  (defun-nodecl test--stb-image (&return int)
+    (var image-to-load (* (const char)) "assets/town.jpg")
+    (var width int 0)
+    (var height int 0)
+    (var num-pixel-components int 0)
+    (var num-desired-channels int 0) ;; Default
+    (var pixel-data (* (unsigned char))
+      (stbi_load image-to-load (addr width) (addr height) (addr num-pixel-components)
+                 num-desired-channels))
+    (unless pixel-data
+      (fprintf stderr "error: failed to load %s\n" image-to-load)
+      (return 1))
+
+    (fprintf stderr "size of %s: %dx%d\n" image-to-load width height)
+    (fprintf stderr "num components in %s: %d\n" image-to-load num-pixel-components)
+    (fprintf stderr "first three pixels:\n")
+    (each-in-range 3 i
+      (var rgb-components ([] 3 (unsigned char)) (array 0))
+      (memcpy rgb-components (addr (at (* i num-pixel-components) pixel-data))
+              (sizeof rgb-components))
+      (fprintf stderr "[%d] %d %d %d\n"
+               i
+               (at 0 rgb-components)
+               (at 1 rgb-components)
+               (at 2 rgb-components)))
+
+    (stbi_image_free pixel-data)
+    (return 0))))

src/STB.cake

@@ -16,7 +16,6 @@
                                   "https://github.com/nothings/stb"
                                   "Dependencies/stb")
 
-
     ;; Enforce only defining the implemention once
     (comptime-cond
      ('stb-ds-defined)
@@ -27,3 +26,28 @@
     (c-import &with-decls "stb_ds.h"
               &with-defs "stb_ds.h"))
   (return true))
+
+(defmacro use-stb-image (clone-func-name symbol)
+  (tokenize-push output
+    ;; TODO: Make this an "infect" to the importer rather than having to be global
+    (add-c-search-directory-global "Dependencies/stb")
+    ;; TODO: Remove once importing this module no longer changes all compile commands
+    (add-build-config-label "STB")
+
+    ;; (add-c-search-directory-module "Dependencies/stb")
+
+    ;; TODO: Remove parameter, replace with gensym/check for redefine?
+    (add-dependency-git-submodule (token-splice clone-func-name)
+                                  "https://github.com/nothings/stb"
+                                  "Dependencies/stb")
+
+    ;; Enforce only defining the implemention once
+    (comptime-cond
+     ('stb-image-defined)
+     (true
+      (c-preprocessor-define STB_IMAGE_IMPLEMENTATION)
+      (comptime-define-symbol 'stb-image-defined)))
+
+    (c-import &with-decls "stb_image.h"
+              &with-defs "stb_image.h"))
+  (return true))

test/src/GameLibTests.cake

@@ -37,8 +37,8 @@
      (true
       "src/Config_Linux.cake")))
 
-  ;; (var test-minimal bool true)
-  (var test-minimal bool false)
+  (var test-minimal bool true)
+  ;; (var test-minimal bool false)
 
   ;; (var test-opengl-only bool true)
   (var test-opengl-only bool false)
@@ -53,7 +53,7 @@
       (array platform-config
              "../src/AutoTest.cake" "../src/Introspection.cake"
              "../src/Dictionary.cake" "../src/DynamicArray.cake"
-             "../src/TaskSystem.cake")))
+             "../src/TaskSystem.cake" "../src/Image.cake")))
 
     (test-opengl-only
      (gamelib-run-test
@@ -68,7 +68,8 @@
              "../src/AutoTest.cake" "../src/SDL.cake" "../src/Math.cake"
              "../src/Aubio.cake" "../src/ImGui.cake" "../src/Dictionary.cake"
              "../src/DynamicArray.cake" "../src/Introspection.cake" "../src/OpenGL.cake"
-             "../src/Tracy.cake" "../src/TaskSystem.cake" "../src/ProfilerAutoInstrument.cake"))
+             "../src/Tracy.cake" "../src/TaskSystem.cake" "../src/Image.cake"
+             "../src/ProfilerAutoInstrument.cake"))
 
      (when test-ogre
        (gamelib-run-test "Ogre" (array platform-config "src/OgreApp.cake"))