Apple-2-Tools/gsport
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Code Issues Projects Releases Wiki Activity

Support arbitrary frambuffer bit depths

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This commit is contained in:
David Schmenk 2013-11-17 02:43:26 +00:00
parent eb50826de5
commit e3440318be
1 changed files with 41 additions and 9 deletions
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50
src/fbdriver.c
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@ -36,6 +36,7 @@
#include "defc.h"
void quitEmulator();
extern int g_screen_depth;
extern word32 g_palette_8to1624[256];
extern word32 g_a2palette_8to1624[256];
extern word32 g_a2_screen_buffer_changed;
@ -55,6 +56,16 @@ extern int g_a2vid_palette;
extern int g_installed_full_superhires_colormap;
extern int g_mouse_raw_x;
extern int g_mouse_raw_y;
extern word32 g_red_mask;
extern word32 g_green_mask;
extern word32 g_blue_mask;
extern int g_red_left_shift;
extern int g_green_left_shift;
extern int g_blue_left_shift;
extern int g_red_right_shift;
extern int g_green_right_shift;
extern int g_blue_right_shift;
extern Kimage g_mainwin_kimage;
int keycode_to_a2code[128] =
{
@ -191,8 +202,7 @@ struct termios org_tio;
struct fb_var_screeninfo orig_vinfo;
struct fb_var_screeninfo vinfo;
struct fb_fix_screeninfo finfo;
int g_use_shmem = 1;
int g_screen_mdepth = 8;
int pix_size, g_screen_mdepth, g_use_shmem = 1;
#define MOUSE_LBTN_DOWN 0x01
#define MOUSE_MBTN_DOWN 0x02
#define MOUSE_RBTN_DOWN 0x04
@ -268,7 +278,7 @@ void dev_video_init(void)
// Store for reset(copy vinfo to vinfo_orig)
memcpy(&orig_vinfo, &vinfo, sizeof(struct fb_var_screeninfo));
// Change variable info
vinfo.bits_per_pixel = 8;
//vinfo.bits_per_pixel = 8;
// Change resolution
vinfo.xres = 640;
vinfo.yres = 400;
@ -298,11 +308,32 @@ void dev_video_init(void)
ioctl(termfd, KDSETMODE, KD_TEXT);
exit (-1);
}
g_screen_depth = vinfo.bits_per_pixel;
g_screen_mdepth = g_screen_depth;
if (g_screen_depth > 8)
g_screen_mdepth = 16;
if (g_screen_depth > 16)
g_screen_mdepth = 32;
pix_size = g_screen_mdepth / 8;
if (vinfo.bits_per_pixel > 8)
{
g_red_mask = (1 << vinfo.red.length) - 1;
g_green_mask = (1 << vinfo.green.length) - 1;
g_blue_mask = (1 << vinfo.blue.length) - 1;
g_red_left_shift = vinfo.red.offset;
g_green_left_shift = vinfo.green.offset;
g_blue_left_shift = vinfo.blue.offset;
g_red_right_shift = 8 - vinfo.red.length;
g_green_right_shift = 8 - vinfo.green.length;
g_blue_right_shift = 8 - vinfo.blue.length;
}
video_get_kimages();
if (g_screen_depth > 8)
video_get_kimage(&g_mainwin_kimage, 0, g_screen_depth, g_screen_mdepth);
for (i = 0; i < 256; i++)
{
video_update_color_raw(i, g_lores_colors[i & 0xf]);
g_a2palette_8to1624[i] = g_palette_8to1624[i];
video_update_color_raw(i, g_lores_colors[i & 0xf]);
g_a2palette_8to1624[i] = g_palette_8to1624[i];
}
fclose(stdin);
freopen("gsport.log", "w+", stdout);
@ -376,7 +407,7 @@ void show_xcolor_array(void)
*/
void x_get_kimage(Kimage *kimage_ptr)
{
kimage_ptr->data_ptr = (byte *)malloc(kimage_ptr->width_req * kimage_ptr->height);
kimage_ptr->data_ptr = (byte *)malloc(kimage_ptr->width_req * kimage_ptr->height * kimage_ptr->mdepth / 8);
}
void x_release_kimage(Kimage* kimage_ptr)
{
@ -390,13 +421,14 @@ void x_push_kimage(Kimage *kimage_ptr, int destx, int desty, int srcx, int srcy,
byte *src_ptr, *dst_ptr;
// Copy sub-image to framebuffer
dst_ptr = (byte *)fb_ptr + desty * finfo.line_length + destx;
src_ptr = kimage_ptr->data_ptr + srcy * kimage_ptr->width_act + srcx;
dst_ptr = (byte *)fb_ptr + desty * finfo.line_length + destx * pix_size;
src_ptr = kimage_ptr->data_ptr + (srcy * kimage_ptr->width_act + srcx) * pix_size;
width *= pix_size;
while (height--)
{
memcpy(dst_ptr, src_ptr, width);
dst_ptr += finfo.line_length;
src_ptr += kimage_ptr->width_act;
src_ptr += kimage_ptr->width_act * pix_size;
}
}
void x_push_done(void)