Try to output color palette (doesn't work)

1 files changed, 15 insertions, 3 deletions

diff --git a/vdp.cpp b/vdp.cpp
index c4bdfa0..08640fa 100644
--- a/vdp.cpp
+++ b/vdp.cpp
@@ -141,11 +141,23 @@ bool VDP::Scanline()
     if (!MODESET2_DISP_GET(mode_set_2)) {
         return true;
     }
-    for (size_t i = 0; i < render_width; i++) {
-        _rendered_buffer[render_width * _lines_counter + i] = 0xff00ffff;
+    const uint16_t lines_per_screen = _status.pal_mode ? kLinesPerScreenPAL : kLinesPerScreenNTSC;
+    if (_lines_counter + 1 == lines_per_screen) {
+        for (size_t i = 0; i < render_width; i++) {
+            const size_t color_index = (i * 2) % kCRAMSize;
+            const uint16_t cram_color = ((_cram[color_index] & 0x1) << 8) | _cram[color_index + 1];
+            const uint8_t blue = cram_color & 7;
+            const uint8_t green = (cram_color >> 3) & 7;
+            const uint8_t red = (cram_color >> 6) & 7;
+            const uint32_t color = 0xff000000 | (red << 16) | (green << 8) | blue;
+            _rendered_buffer[render_width * _lines_counter + i] = color;
+        }
+    } else {
+        for (size_t i = 0; i < render_width; i++) {
+            _rendered_buffer[render_width * _lines_counter + i] = 0xff000000;
+        }
     }
     _lines_counter++;
-    const uint16_t lines_per_screen = _status.pal_mode ? kLinesPerScreenPAL : kLinesPerScreenNTSC;
     if (_lines_counter >= lines_per_screen) {
         _lines_counter = 0;
         if (MODESET2_IE0_GET(mode_set_2)) {