From dffbb9c741b3f55d47f8dfb02448566b144c5494 Mon Sep 17 00:00:00 2001
From: Raimon Zamora <jaildoctor@gmail.com>
Date: Thu, 30 Jan 2025 14:35:35 +0100
Subject: [PATCH] - [NEW] Ctrl+Q tanca el emu - [NEW] Pantalla LCD verda

---
 gbscreen.cpp | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/gbscreen.cpp b/gbscreen.cpp
index abb31dd..d4c6b61 100644
--- a/gbscreen.cpp
+++ b/gbscreen.cpp
@@ -16,9 +16,9 @@ namespace gbscreen
         uint8_t y, x, tile, attr;
     };
 
-    uint32_t palette[4] = {
-        //0xFFFFFF, 0xFF0000, 0x00FF00, 0x0000FF
-        0xFFFFFF, 0xAAAAAA, 0x555555, 0x000000
+    uint32_t palette[2][4] = {
+        { 0xFFFFFF, 0xAAAAAA, 0x555555, 0x000000 },
+        { 0xA0AA05, 0x749527, 0x487F49, 0x2E4326/*0x1D6A6B*/ }
     };
     SDL_Window *win = nullptr;
     SDL_Renderer *ren = nullptr;
@@ -29,7 +29,8 @@ namespace gbscreen
     uint32_t t_states_per_scanline = 456;
     uint32_t vsync_lines = 10;
 
-    uint8_t zoom = 2;
+    uint8_t zoom = 3;
+    uint8_t use_palette=1;
     bool fullscreen = false;
     bool full_refresh = true;
     int fullscreen_scale = 1;
@@ -102,6 +103,8 @@ namespace gbscreen
                         //zx_tape::play();
                     } else if (e->key.keysym.scancode==SDL_SCANCODE_F7) {
                         //zx_tape::rewind();
+                    } else if (e->key.keysym.scancode==SDL_SCANCODE_Q && e->key.keysym.mod & KMOD_CTRL) {
+                        return false;
                     }
                 }
             }
@@ -319,7 +322,8 @@ namespace gbscreen
             if ( (STAT&0x3)==3) {
                 uint16_t current_pixel = dots_in_scanline-80;
                 if (current_pixel<160) {
-                    gb_pixels[current_pixel+LY*160] = line_buffer[current_pixel];
+                    uint8_t pixel = gb_pixels[current_pixel+LY*160];
+                    gb_pixels[current_pixel+LY*160] = pixel > line_buffer[current_pixel] ? pixel-1 : line_buffer[current_pixel];
                 }
             }
 
@@ -405,7 +409,7 @@ namespace gbscreen
         Uint32* pixels;
         int pitch;
         SDL_LockTexture(tex, NULL, (void**)&pixels, &pitch);
-        for (int i=0; i<160*144;++i) *(pixels++) = palette[gb_pixels[i]];
+        for (int i=0; i<160*144;++i) *(pixels++) = palette[use_palette][gb_pixels[i]];
         SDL_UnlockTexture(tex);
 
         if (fullscreen)
@@ -417,6 +421,14 @@ namespace gbscreen
         // Pintem la textura a pantalla
         SDL_RenderCopy(ren, tex, NULL, &dest_rect);
 
+        // Pintem les ralles dels pixels
+        if (zoom>2) {
+            SDL_SetRenderDrawBlendMode(ren, SDL_BLENDMODE_BLEND);
+            SDL_SetRenderDrawColor(ren, 160, 170, 5, 96);
+            for (int i=0;i<144;++i) SDL_RenderDrawLine(ren, 0, i*zoom, 159*zoom, i*zoom);
+            for (int i=0;i<160;++i) SDL_RenderDrawLine(ren, i*zoom, 0, i*zoom, 139*zoom);
+        }
+
         if (present)
             SDL_RenderPresent(ren);
         else