From 7b3c578d22e5eebc4d048655da7bc711662e2179 Mon Sep 17 00:00:00 2001
From: John Tsiombikas <nuclear@member.fsf.org>
Date: Thu, 5 Mar 2020 17:48:34 +0200
Subject: [PATCH] fixed imago 565, started on menu

---
 GNUmakefile             |    2 +-
 libs/imago/src/conv.c   |   22 +++++++++++-----------
 libs/imago/src/imago2.c |    2 ++
 src/game.c              |    5 ++---
 src/game.h              |    4 +++-
 src/gfxutil.c           |    8 ++++----
 src/gfxutil.h           |    4 ++--
 src/menuscr.c           |   38 ++++++++++++++++++++++++++++++++++----
 8 files changed, 59 insertions(+), 26 deletions(-)

diff --git a/GNUmakefile b/GNUmakefile
index ccb0eb2..65e3d47 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -4,7 +4,7 @@ obj = $(csrc:.c=.o)
 dep = $(obj:.o=.d)
 bin = game
 
-inc = -Isrc -Isrc/sdl -Isrc/3dgfx
+inc = -Isrc -Isrc/sdl -Isrc/3dgfx -Ilibs/imago/src
 
 CFLAGS = $(arch) -pedantic -Wall -g -MMD $(inc) `sdl-config --cflags`
 LDFLAGS = $(arch) -Llibs/imago -limago `sdl-config --libs` -lm
diff --git a/libs/imago/src/conv.c b/libs/imago/src/conv.c
index bd7fb2d..51ecd1f 100644
--- a/libs/imago/src/conv.c
+++ b/libs/imago/src/conv.c
@@ -192,12 +192,12 @@ static void unpack_rgb565(struct pixel *unp, void *pptr, int count)
 
 	for(i=0; i<count; i++) {
 		uint16_t r, g, b, p = *pix++;
-		r = (p & 0x1f) << 3;
-		if(r & 8) r |= 7;	/* fill LSbits with whatever bit 0 was */
+		b = (p & 0x1f) << 3;
+		if(b & 8) b |= 7;	/* fill LSbits with whatever bit 0 was */
 		g = (p >> 2) & 0xfc;
 		if(g & 4) g |= 3;	/* ditto */
-		b = (p >> 8) & 0xf8;
-		if(b & 8) r |= 7;	/* same */
+		r = (p >> 8) & 0xf8;
+		if(r & 8) r |= 7;	/* same */
 
 		unp->r = (float)r / 255.0f;
 		unp->g = (float)g / 255.0f;
@@ -292,13 +292,13 @@ static void pack_rgb565(void *pptr, struct pixel *unp, int count)
 	uint16_t *pix = pptr;
 
 	for(i=0; i<count; i++) {
-		uint16_t r = (uint16_t)(unp->r * 255.0f);
-		uint16_t g = (uint16_t)(unp->g * 255.0f);
-		uint16_t b = (uint16_t)(unp->b * 255.0f);
-		if(r > 255) r = 255;
-		if(g > 255) g = 255;
-		if(b > 255) b = 255;
-		*pix++ = (r >> 3) | ((g & 0x3f) << 2) | ((b & 0x1f) << 8);
+		uint16_t r = (uint16_t)(unp->r * 31.0f);
+		uint16_t g = (uint16_t)(unp->g * 63.0f);
+		uint16_t b = (uint16_t)(unp->b * 31.0f);
+		if(r > 31) r = 31;
+		if(g > 63) g = 63;
+		if(b > 31) b = 31;
+		*pix++ = (r << 11) | (g << 5) | b;
 		unp++;
 	}
 }
diff --git a/libs/imago/src/imago2.c b/libs/imago/src/imago2.c
index 30782dc..816f8c0 100644
--- a/libs/imago/src/imago2.c
+++ b/libs/imago/src/imago2.c
@@ -426,6 +426,8 @@ static int pixel_size(enum img_fmt fmt)
 		return 3 * sizeof(float);
 	case IMG_FMT_RGBAF:
 		return 4 * sizeof(float);
+	case IMG_FMT_RGB565:
+		return 2;
 	default:
 		break;
 	}
diff --git a/src/game.c b/src/game.c
index 2ec7c45..23aa25c 100644
--- a/src/game.c
+++ b/src/game.c
@@ -3,7 +3,7 @@
 
 int fb_width, fb_height;
 long fb_size;
-void *fb_pixels, *vmem;
+uint16_t *fb_pixels;
 
 long time_msec;
 
@@ -20,8 +20,7 @@ int init(int argc, char **argv)
 		return -1;
 	}
 
-	draw = intro_draw;
-	key_event = intro_keyb;
+	intro_start();
 	return 0;
 }
 
diff --git a/src/game.h b/src/game.h
index fa94d7a..a080fab 100644
--- a/src/game.h
+++ b/src/game.h
@@ -1,12 +1,14 @@
 #ifndef GAME_H_
 #define GAME_H_
 
+#include "inttypes.h"
+
 #define FB_BPP	16
 
 extern int fb_width;
 extern int fb_height;
 extern long fb_size;
-extern void *fb_pixels, *vmem;
+extern uint16_t *fb_pixels;
 
 extern long time_msec;
 
diff --git a/src/gfxutil.c b/src/gfxutil.c
index 173eb47..cc0732f 100644
--- a/src/gfxutil.c
+++ b/src/gfxutil.c
@@ -217,19 +217,19 @@ void convimg_rgb24_rgb16(uint16_t *dest, unsigned char *src, int xsz, int ysz)
 	}
 }
 
-void blitfb(uint16_t *dest, uint16_t *src, int width, int height, int pitch_pix)
+void blit(uint16_t *dest, int destwidth, uint16_t *src, int width, int height, int pitch_pix)
 {
 	int i;
 	for(i=0; i<height; i++) {
 		memcpy(dest, src, width * 2);
-		dest += 320;
+		dest += destwidth;
 		src += pitch_pix;
 	}
 }
 
-void blitfb_key(uint16_t *dest, uint16_t *src, int width, int height, int pitch_pix, uint16_t key)
+void blit_key(uint16_t *dest, int destwidth, uint16_t *src, int width, int height, int pitch_pix, uint16_t key)
 {
-	int i, j, dadv = 320 - width;
+	int i, j, dadv = destwidth - width;
 
 	for(i=0; i<height; i++) {
 		for(j=0; j<width; j++) {
diff --git a/src/gfxutil.h b/src/gfxutil.h
index b46f813..6f33339 100644
--- a/src/gfxutil.h
+++ b/src/gfxutil.h
@@ -28,7 +28,7 @@ void blur_grey_vert(uint16_t *dest, uint16_t *src, int xsz, int ysz, int radius,
 
 void convimg_rgb24_rgb16(uint16_t *dest, unsigned char *src, int xsz, int ysz);
 
-void blitfb(uint16_t *dest, uint16_t *src, int xsz, int ysz, int pitch_pix);
-void blitfb_key(uint16_t *dest, uint16_t *src, int xsz, int ysz, int pitch_pix, uint16_t key);
+void blit(uint16_t *dest, int destwidth, uint16_t *src, int xsz, int ysz, int pitch_pix);
+void blit_key(uint16_t *dest, int destwidth, uint16_t *src, int xsz, int ysz, int pitch_pix, uint16_t key);
 
 #endif	/* GFXUTIL_H_ */
diff --git a/src/menuscr.c b/src/menuscr.c
index b0e7fb9..51f8ae9 100644
--- a/src/menuscr.c
+++ b/src/menuscr.c
@@ -5,16 +5,25 @@
 #include "gfxutil.h"
 #include "game.h"
 
-static void *bgpix;
+static const struct menuent {
+	int x, y, len, height;
+} menuent[] = {
+	{240, 300, 170, 32},
+	{230, 360, 184, 32},
+	{260, 424, 130, 32}
+};
+
+static int cur;
+
+static uint16_t *bgpix;
 static int bgwidth, bgheight;
 
 int menu_init(void)
 {
-	if(!(bgpix = img_load_pixels("data/menbg640.png", &bgwidth, &bgheight, IMG_FMT_RGB24))) {
+	if(!(bgpix = img_load_pixels("data/menbg640.png", &bgwidth, &bgheight, IMG_FMT_RGB565))) {
 		fprintf(stderr, "failed to load menu bg image\n");
 		return -1;
 	}
-	convimg_rgb24_rgb16(bgpix, bgpix, bgwidth, bgheight);
 	return 0;
 }
 
@@ -33,9 +42,30 @@ void menu_stop(void)
 {
 }
 
+
+
 void menu_draw(void)
 {
-	blit_frame(bgpix, 1);
+	static uint16_t blurbuf[2][16384];
+	int y, offs;
+	int i, j;
+	const struct menuent *ent = menuent + cur;
+
+	y = ent->y - ent->height / 2;
+	offs = y * ent->len + ent->x;
+	blit(blurbuf[0], ent->len, bgpix + offs, ent->len, ent->height, bgwidth);
+
+	//blur_grey_horiz(blurbuf[1], blurbuf[0], ent->len, ent->height, 5, 0x100);
+	for(i=0; i<ent->height; i++) {
+		for(j=0; j<ent->len; j++) {
+			blurbuf[1][i * ent->len + j] = 0xff;//~blurbuf[0][i * ent->len + j];
+		}
+	}
+
+	wait_vsync();
+
+	blit_frame(bgpix, 0);
+	blit(fb_pixels + offs, fb_width, blurbuf[1], ent->len, ent->height, ent->len);
 }
 
 void menu_keyb(int key, int pressed)
-- 
1.7.10.4