X-Git-Url: http://git.mutantstargoat.com?a=blobdiff_plain;f=src%2Ffbdev%2Fgfx.cc;h=d0a81788b3431eb3067ceb778189b599b67311bf;hb=5984d5479693fd7519674a5bc40ebf804f8d0a46;hp=742b6c687b48611461bfa537934e635dee65cb57;hpb=695cf39b73ecc76cbbc39e54f844ae55f4a9f938;p=winnie

diff --git a/src/fbdev/gfx.cc b/src/fbdev/gfx.cc
index 742b6c6..d0a8178 100644
--- a/src/fbdev/gfx.cc
+++ b/src/fbdev/gfx.cc
@@ -2,6 +2,7 @@
 #include <errno.h>
 #include <limits.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include <fcntl.h>
@@ -16,50 +17,61 @@
 
 #define FRAMEBUFFER_SIZE(xsz, ysz, bpp) ((xsz) * (ysz) * (bpp) / CHAR_BIT)
 
-static unsigned char *framebuffer;
-static int dev_fd = -1;
+struct Graphics {
+	unsigned char *framebuffer;
+	int dev_fd;
+	Rect screen_rect;
+	Rect clipping_rect;
+	int color_depth;
+	Pixmap *pixmap;
+};
 
-static Rect screen_rect;
-static int color_depth; // bits per pixel
-
-static Pixmap *pixmap;
+static Graphics *gfx;
 
 bool init_gfx()
 {
-	if((dev_fd = open("/dev/fb0", O_RDWR)) == -1) {
+	gfx->dev_fd = -1;
+
+	if((gfx->dev_fd = open("/dev/fb0", O_RDWR)) == -1) {
 		fprintf(stderr, "Cannot open /dev/fb0 : %s\n", strerror(errno));
 		return false;
 	}
 
 	fb_var_screeninfo sinfo;
-	if(ioctl(dev_fd, FBIOGET_VSCREENINFO, &sinfo) == -1) {
-		close(dev_fd);
-		dev_fd = -1;
+	if(ioctl(gfx->dev_fd, FBIOGET_VSCREENINFO, &sinfo) == -1) {
+		close(gfx->dev_fd);
+		gfx->dev_fd = -1;
 		fprintf(stderr, "Unable to get screen info : %s\n", strerror(errno));
 		return false;
 	}
 
+	if(!(gfx = (Graphics*)malloc(sizeof *gfx))) {
+		return false;
+	}
+
 	printf("width : %d height : %d\n : bpp : %d\n", sinfo.xres, sinfo.yres, sinfo.bits_per_pixel);
 	printf("virtual w: %d virtual h: %d\n", sinfo.xres_virtual, sinfo.yres_virtual);
 
-	screen_rect.x = screen_rect.y = 0;
-	screen_rect.width = sinfo.xres_virtual;
-	screen_rect.height = sinfo.yres_virtual;
-	color_depth = sinfo.bits_per_pixel;
+	gfx->screen_rect.x = gfx->screen_rect.y = 0;
+	gfx->screen_rect.width = sinfo.xres_virtual;
+	gfx->screen_rect.height = sinfo.yres_virtual;
+	gfx->color_depth = sinfo.bits_per_pixel;
+
+	set_clipping_rect(gfx->screen_rect);
 
-	int sz = FRAMEBUFFER_SIZE(screen_rect.width, screen_rect.height, color_depth);
-	framebuffer = (unsigned char*)mmap(0, sz, PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, 0);
+	int sz = FRAMEBUFFER_SIZE(gfx->screen_rect.width, gfx->screen_rect.height, gfx->color_depth);
+	gfx->framebuffer = (unsigned char*)mmap(0, sz, PROT_READ | PROT_WRITE, MAP_SHARED, gfx->dev_fd, 0);
 
-	if(framebuffer == (void*)-1) {
-		close(dev_fd);
-		dev_fd = -1;
+	if(gfx->framebuffer == (void*)-1) {
+		close(gfx->dev_fd);
+		gfx->dev_fd = -1;
 		fprintf(stderr, "Cannot map the framebuffer to memory : %s\n", strerror(errno));
 		return false;
 	}
 
 // TODO: uncomment when I find how to use intelfb instead of i915 GRRRR.-	
 	fb_vblank vblank;
-	if(ioctl(dev_fd, FBIOGET_VBLANK, &vblank) == -1) {
+	if(ioctl(gfx->dev_fd, FBIOGET_VBLANK, &vblank) == -1) {
 //		fprintf(stderr, "FBIOGET_VBLANK error: %s\n", strerror(errno));
 	}
 /*	
@@ -70,10 +82,10 @@ bool init_gfx()
 	}
 */
 
-	pixmap = new Pixmap;
-	pixmap->width = screen_rect.width;
-	pixmap->height = screen_rect.height;
-	pixmap->pixels = framebuffer;
+	gfx->pixmap = new Pixmap;
+	gfx->pixmap->width = gfx->screen_rect.width;
+	gfx->pixmap->height = gfx->screen_rect.height;
+	gfx->pixmap->pixels = gfx->framebuffer;
 
 	return true;
 }
@@ -82,74 +94,48 @@ void destroy_gfx()
 {
 	clear_screen(0, 0, 0);
 
-	if(dev_fd != -1) {
-		close(dev_fd);
+	if(gfx->dev_fd != -1) {
+		close(gfx->dev_fd);
 	}
 
-	dev_fd = -1;
+	gfx->dev_fd = -1;
+
+	munmap(gfx->framebuffer, FRAMEBUFFER_SIZE(gfx->screen_rect.width, gfx->screen_rect.height, gfx->color_depth));
+	gfx->framebuffer = 0;
 
-	munmap(framebuffer, FRAMEBUFFER_SIZE(screen_rect.width, screen_rect.height, color_depth));
-	framebuffer = 0;
+	gfx->pixmap->pixels = 0;
 
-	pixmap->pixels = 0;
+	free(gfx);
 }
 
 unsigned char *get_framebuffer()
 {
-	return framebuffer;
+	return gfx->framebuffer;
 }
 
 Pixmap *get_framebuffer_pixmap()
 {
-	return pixmap;
+	return gfx->pixmap;
 }
 
 Rect get_screen_size()
 {
-	return screen_rect;
+	return gfx->screen_rect;
 }
 
 int get_color_depth()
 {
-	return color_depth;
+	return gfx->color_depth;
 }
 
-void clear_screen(int r, int g, int b)
+void set_clipping_rect(const Rect &rect)
 {
-	fill_rect(screen_rect, r, g, b);
+	gfx->clipping_rect = rect_intersection(rect, get_screen_size());
 }
 
-void fill_rect(const Rect &rect, int r, int g, int b)
+const Rect &get_clipping_rect()
 {
-	Rect drect = rect;
-
-	if(drect.x < screen_rect.x) {
-		drect.width -= screen_rect.x - drect.x;
-		drect.x = screen_rect.x;
-	}
-
-	if(drect.y < screen_rect.y) {
-		drect.height -= screen_rect.y - drect.y;
-		drect.y = screen_rect.y;
-	}
-
-	if(drect.x + drect.width >= screen_rect.x + screen_rect.width) {
-		drect.width = screen_rect.width - drect.x;
-	}
-
-	if(drect.y + drect.height >= screen_rect.y + screen_rect.height) {
-		drect.height = screen_rect.height - drect.y;
-	}
-
-	unsigned char *fb = framebuffer + (drect.x + screen_rect.width * drect.y) * 4;
-	for(int i=0; i<drect.height; i++) {
-		for(int j=0; j<drect.width; j++) {
-			fb[j * 4] = b;
-			fb[j * 4 + 1] = g;
-			fb[j * 4 + 2] = r;
-		}
-		fb += screen_rect.width * 4;
-	}
+	return gfx->clipping_rect;
 }
 
 void set_cursor_visibility(bool visible)
@@ -157,106 +143,11 @@ void set_cursor_visibility(bool visible)
 	fb_cursor curs;
 	curs.enable = visible ? 1 : 0;
 
-	if(ioctl(dev_fd, FBIO_CURSOR, &curs) == -1) {
+	if(ioctl(gfx->dev_fd, FBIO_CURSOR, &curs) == -1) {
 		fprintf(stderr, "Cannot toggle cursor visibility : %s\n", strerror(errno));
 	}
 }
 
-void blit(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
-		const Rect &dest_rect, int dest_x, int dest_y)
-{
-	int width = src_rect.width;
-	int height = src_rect.height;
-
-	int xoffs = dest_x - dest_rect.x;
-	if(xoffs < 0) {
-		dest_x = dest_rect.x;
-		width += xoffs;
-	}
-
-	int yoffs = dest_y - dest_rect.y;
-	if(yoffs < 0) {
-		dest_y = dest_rect.y;
-		height += yoffs;
-	}
-
-	int xend = dest_x + width;
-	if(xend >= dest_rect.width) {
-		width -= xend - dest_rect.width;
-	}
-
-	int yend = dest_y + height;
-	if(yend >= dest_rect.height) {
-		height -= yend - dest_rect.height;
-	}
-
-	if(width <= 0 || height <= 0) {
-		return;
-	}
-
-	unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
-	unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
-
-	for(int i=0; i<height; i++) {
-		memcpy(dptr, sptr, width * 4);
-		sptr += src_rect.width * 4;
-		dptr += dest_rect.width * 4;
-	}
-}
-
-void blit_key(unsigned char *src_img, const Rect &src_rect, unsigned char* dest_img,
-		const Rect &dest_rect, int dest_x, int dest_y, int key_r, int key_g, int key_b)
-{
-	int width = src_rect.width;
-	int height = src_rect.height;
-
-	int xoffs = dest_x - dest_rect.x;
-	if(xoffs < 0) {
-		dest_x = dest_rect.x;
-		width += xoffs;
-	}
-
-	int yoffs = dest_y - dest_rect.y;
-	if(yoffs < 0) {
-		dest_y = dest_rect.y;
-		height += yoffs;
-	}
-
-	int xend = dest_x + width;
-	if(xend >= dest_rect.width) {
-		width -= xend - dest_rect.width;
-	}
-
-	int yend = dest_y + height;
-	if(yend >= dest_rect.height) {
-		height -= yend - dest_rect.height;
-	}
-
-	if(width <= 0 || height <= 0) {
-		return;
-	}
-
-	unsigned char *sptr = src_img + (src_rect.y * src_rect.width + src_rect.x) * 4;
-	unsigned char *dptr = dest_img + (dest_y * dest_rect.width + dest_x) * 4;
-
-	for(int i=0; i<height; i++) {
-		for(int j=0; j<width; j++) {
-			int r = sptr[j * 4];
-			int g = sptr[j * 4 + 1];
-			int b = sptr[j * 4 + 2];
-
-			if(r != key_r || g != key_g || b != key_b) {
-				dptr[j * 4] = b;
-				dptr[j * 4 + 1] = g;
-				dptr[j * 4 + 2] = r;
-			}
-		}
-
-		sptr += src_rect.width * 4;
-		dptr += dest_rect.width * 4;
-	}
-}
-
 void gfx_update()
 {
 }
@@ -264,7 +155,7 @@ void gfx_update()
 void wait_vsync()
 {
 	unsigned long arg = 0;
-	if(ioctl(dev_fd, FBIO_WAITFORVSYNC, &arg) == -1) {
+	if(ioctl(gfx->dev_fd, FBIO_WAITFORVSYNC, &arg) == -1) {
 //		printf("ioctl error %s\n", strerror(errno));
 	}
 }