Support double-buffered hires, enable by default on RP2350

32blit · Aug 12, 2024 · eb20ed4 · eb20ed4
1 parent b4f4a78
commit eb20ed4
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Showing 2 changed files with 17 additions and 3 deletions.
diff --git a/32blit-pico/config.h b/32blit-pico/config.h
@@ -10,6 +10,14 @@
 #define ALLOW_HIRES 1
 #endif
 
+#ifndef DOUBLE_BUFFERED_HIRES
+#ifdef PICO_RP2350
+#define DOUBLE_BUFFERED_HIRES 1
+#else
+#define DOUBLE_BUFFERED_HIRES 0
+#endif
+#endif
+
 #ifndef BUTTON_LEFT_PIN
 #define BUTTON_LEFT_PIN -1
 #define BUTTON_LEFT_BI_DECL

diff --git a/32blit-pico/display.cpp b/32blit-pico/display.cpp
@@ -8,16 +8,22 @@ using namespace blit;
 // this is in bytes
 static const int lores_page_size = (DISPLAY_WIDTH / 2) * ((DISPLAY_HEIGHT + 1) / 2) * 2;
 
+#if ALLOW_HIRES && DOUBLE_BUFFERED_HIRES
+static const int fb_size = DISPLAY_WIDTH * DISPLAY_HEIGHT * 2;
+#elif ALLOW_HIRES
+static const int fb_size = DISPLAY_WIDTH * DISPLAY_HEIGHT;
+#else
+static const int fb_size = lores_page_size; // double-buffered
+#endif
+
 SurfaceInfo cur_surf_info;
 
 bool fb_double_buffer = true;
 
 #if defined(BLIT_BOARD_PIMORONI_PICOVISION)
 static const uint16_t *screen_fb = nullptr;
-#elif ALLOW_HIRES
-uint16_t screen_fb[DISPLAY_WIDTH * DISPLAY_HEIGHT];
 #else
-uint16_t screen_fb[lores_page_size]; // double-buffered
+uint16_t screen_fb[fb_size];
 #endif
 
 static const Size lores_screen_size(DISPLAY_WIDTH / 2, DISPLAY_HEIGHT / 2);