From 0b86e0d8e96ccb313bd8033aec013f29fe8a8b99 Mon Sep 17 00:00:00 2001
From: kkard2 <contact@kkard2.com>
Date: Sat, 6 Sep 2025 14:29:05 +0200
Subject: multiple examples

---
 README.md        |  2 +-
 example.c        | 12 ------------
 example.h        |  1 +
 examples/rects.c | 11 +++++++++++
 platform_win32.c |  8 +++++---
 run.bat          |  6 +++---
 sponge.h         | 12 ++++++------
 7 files changed, 27 insertions(+), 25 deletions(-)
 delete mode 100644 example.c
 create mode 100644 example.h
 create mode 100644 examples/rects.c

diff --git a/README.md b/README.md
index 9481ca7..6abee55 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # windows
 1. open folder in developer command prompt for visual studio
-2. execute `run`
+2. run `run rects.c`
diff --git a/example.c b/example.c
deleted file mode 100644
index 1ff063c..0000000
--- a/example.c
+++ /dev/null
@@ -1,12 +0,0 @@
-#include <assert.h>
-
-#define SPONGE_IMPLEMENTATION
-#include "sponge.h"
-
-void draw_frame(sponge_Canvas c) {
-    assert(c.width > 140 + 20);
-    assert(c.height > 70 + 40);
-    sponge_clear(c, 0xFF000000);
-    sponge_draw_rect(c, 80, 70, 80 + 20, 70 + 40, 0xFFFF00FF);
-    sponge_draw_rect(c, 140, 70, 140 + 20, 70 + 40, 0xFFFF00FF);
-}
diff --git a/example.h b/example.h
new file mode 100644
index 0000000..960c321
--- /dev/null
+++ b/example.h
@@ -0,0 +1 @@
+void draw_frame(sponge_Texture c);
diff --git a/examples/rects.c b/examples/rects.c
new file mode 100644
index 0000000..e78ac69
--- /dev/null
+++ b/examples/rects.c
@@ -0,0 +1,11 @@
+#include <assert.h>
+
+#include "../sponge.h"
+
+void draw_frame(sponge_Texture c) {
+    assert(c.width > 140 + 20);
+    assert(c.height > 70 + 40);
+    sponge_clear(c, 0xFF000000);
+    sponge_draw_rect(c, 80, 70, 80 + 20, 70 + 40, 0xFFFF00FF);
+    sponge_draw_rect(c, 140, 70, 140 + 20, 70 + 40, 0xFFFF00FF);
+}
diff --git a/platform_win32.c b/platform_win32.c
index d02bbb4..a41b135 100644
--- a/platform_win32.c
+++ b/platform_win32.c
@@ -1,8 +1,10 @@
 #define UNICODE
 #include <windows.h>
 
-// TODO(kard): we should probably put more thought into this
-#include "example.c"
+#define SPONGE_IMPLEMENTATION
+#include "sponge.h"
+
+#include "example.h"
 
 // TODO(kard): ofc some resizing stuff
 #define WIDTH 256
@@ -63,7 +65,7 @@ int WinMain(
     bmi.bmiHeader.biBitCount    = 32;
     bmi.bmiHeader.biCompression = BI_RGB;
 
-    sponge_Canvas canvas = {
+    sponge_Texture canvas = {
         .pixels = pixel_buffer,
         .width = WIDTH,
         .height = HEIGHT,
diff --git a/run.bat b/run.bat
index f6cf655..e5916e5 100644
--- a/run.bat
+++ b/run.bat
@@ -1,3 +1,3 @@
-del platform_win32.exe
-cl platform_win32.c user32.lib gdi32.lib
-platform_win32.exe
+del out.exe
+cl platform_win32.c "examples\%1" user32.lib gdi32.lib /Fe:out.exe
+out.exe
diff --git a/sponge.h b/sponge.h
index a383b0a..6255236 100644
--- a/sponge.h
+++ b/sponge.h
@@ -1,28 +1,28 @@
 #include <stdint.h>
 
-// TODO(kard): consider storing pixels buffer size
 typedef struct {
     // TODO(kard): define byte order
     uint32_t *pixels;
     uint32_t width;
     uint32_t height;
     uint32_t stride;
-} sponge_Canvas;
+} sponge_Texture;
 
-void sponge_clear(sponge_Canvas c, uint32_t color);
-void sponge_draw_rect(sponge_Canvas c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color);
+void sponge_clear(sponge_Texture c, uint32_t color);
+void sponge_draw_rect(sponge_Texture c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color);
+void sponge_draw_texture(sponge_Texture c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, sponge_Texture texture);
 
 // TODO(kard): prefix stripping
 
 #ifdef SPONGE_IMPLEMENTATION
 
-void sponge_clear(sponge_Canvas c, uint32_t color) {
+void sponge_clear(sponge_Texture c, uint32_t color) {
     sponge_draw_rect(c, 0, 0, c.width - 1, c.height - 1, color);
 }
 
 // TODO(kard): probably bounds checking
 // TODO(kard): alpha blending maybe
-void sponge_draw_rect(sponge_Canvas c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color) {
+void sponge_draw_rect(sponge_Texture c, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t color) {
     uint32_t *row = c.pixels + (y0 * c.stride);
 
     for (uint32_t y = y0; y <= y1; y++, row += c.stride) {
-- 
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