From 2122e2fc56a9513078a02c904e793902d5ee095f Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Wed, 15 Oct 2025 19:35:34 -0700
Subject: Add function to compute number of pixels in a framebuffer

---
 src/framebuffer.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'src/framebuffer.c')

diff --git a/src/framebuffer.c b/src/framebuffer.c
index dc9cc78..5cb41fd 100644
--- a/src/framebuffer.c
+++ b/src/framebuffer.c
@@ -54,13 +54,19 @@ const Framebuffer* framebuffer_get() {
   return &framebuffer;
 }
 
+static inline uint32_t framebuffer_num_pixels() {
+  const uint32_t num_channels = framebuffer.depth / 8;
+  const uint32_t num_pixels   = framebuffer.size  / num_channels;
+  return num_pixels;
+}
+
 void framebuffer_present(const Pixel* pixels) {
-  memcpy(framebuffer.pixels, pixels, framebuffer.size);
+  const uint32_t num_pixels = framebuffer_num_pixels();
+  memcpy(framebuffer.pixels, pixels, num_pixels);
 }
 
 void framebuffer_clear(Pixel colour) {
-  const uint32_t num_channels = framebuffer.depth / 8;
-  const uint32_t num_pixels   = framebuffer.size  / num_channels;
+  const uint32_t num_pixels = framebuffer_num_pixels();
   volatile Pixel* fb = framebuffer.pixels;
   for (size_t i = 0; i < num_pixels; i++) {
     fb->r = colour.r;
-- 
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