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SDL_gemvideo.c
1378 lines (1132 loc) · 36.4 KB
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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/*
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GEM video driver
Patrice Mandin
and work from
Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard
*/
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/* Mint includes */
#include <gem.h>
#include <gemx.h>
#include <mint/osbind.h>
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#include <mint/cookie.h>
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#include "SDL_endian.h"
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#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
#include "../SDL_cursor_c.h"
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#include "../ataricommon/SDL_ataric2p_s.h"
#include "../ataricommon/SDL_atarieddi_s.h"
#include "../ataricommon/SDL_atarimxalloc_c.h"
#include "../ataricommon/SDL_atarigl_c.h"
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#include "SDL_gemvideo.h"
#include "SDL_gemevents_c.h"
#include "SDL_gemmouse_c.h"
#include "SDL_gemwm_c.h"
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#include "../ataricommon/SDL_xbiosevents_c.h"
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#include "../ataricommon/SDL_ataridevmouse_c.h"
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/* Defines */
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/*#define DEBUG_VIDEO_GEM 1*/
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#define GEM_VID_DRIVER_NAME "gem"
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#undef MIN
#define MIN(a,b) (((a)<(b)) ? (a) : (b))
#undef MAX
#define MAX(a,b) (((a)>(b)) ? (a) : (b))
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/* Variables */
static unsigned char vdi_index[256] = {
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0, 2, 3, 6, 4, 7, 5, 8,
9, 10, 11, 14, 12, 15, 13, 255
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};
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static const unsigned char empty_name[] = "";
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/* Initialization/Query functions */
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static int GEM_VideoInit(_THIS, SDL_PixelFormat * vformat);
static SDL_Rect **GEM_ListModes(_THIS, SDL_PixelFormat * format,
Uint32 flags);
static SDL_Surface *GEM_SetVideoMode(_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
static int GEM_SetColors(_THIS, int firstcolor, int ncolors,
SDL_Color * colors);
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static void GEM_VideoQuit(_THIS);
/* Hardware surface functions */
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static int GEM_AllocHWSurface(_THIS, SDL_Surface * surface);
static int GEM_LockHWSurface(_THIS, SDL_Surface * surface);
static int GEM_FlipHWSurface(_THIS, SDL_Surface * surface);
static void GEM_UnlockHWSurface(_THIS, SDL_Surface * surface);
static void GEM_FreeHWSurface(_THIS, SDL_Surface * surface);
static void GEM_UpdateRects(_THIS, int numrects, SDL_Rect * rects);
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#if 0
static int GEM_ToggleFullScreen(_THIS, int on);
#endif
/* Internal functions */
static void GEM_FreeBuffers(_THIS);
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static void GEM_ClearScreen(_THIS);
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static void GEM_ClearRect(_THIS, short *rect);
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static void GEM_SetNewPalette(_THIS, Uint16 newpal[256][3]);
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static void GEM_LockScreen(_THIS);
static void GEM_UnlockScreen(_THIS);
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static void refresh_window(_THIS, int winhandle, short *rect);
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#if SDL_VIDEO_OPENGL
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/* OpenGL functions */
static void GEM_GL_SwapBuffers(_THIS);
#endif
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/* GEM driver bootstrap functions */
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static int
GEM_Available(void)
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{
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/* Test if AES available */
if (appl_init() == -1)
return 0;
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appl_exit();
return 1;
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}
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static void
GEM_DeleteDevice(SDL_VideoDevice * device)
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{
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SDL_free(device->hidden);
SDL_free(device);
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}
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static SDL_VideoDevice *
GEM_CreateDevice(int devindex)
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{
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SDL_VideoDevice *device;
int vectors_mask;
unsigned long dummy;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice));
if (device) {
SDL_memset(device, 0, (sizeof *device));
device->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc((sizeof *device->hidden));
device->gl_data = (struct SDL_PrivateGLData *)
SDL_malloc((sizeof *device->gl_data));
}
if ((device == NULL) || (device->hidden == NULL)) {
SDL_OutOfMemory();
if (device) {
SDL_free(device);
}
return (0);
}
SDL_memset(device->hidden, 0, (sizeof *device->hidden));
SDL_memset(device->gl_data, 0, sizeof(*device->gl_data));
/* Set the function pointers */
device->VideoInit = GEM_VideoInit;
device->ListModes = GEM_ListModes;
device->SetVideoMode = GEM_SetVideoMode;
device->SetColors = GEM_SetColors;
device->UpdateRects = NULL /*GEM_UpdateRects */ ;
device->VideoQuit = GEM_VideoQuit;
device->AllocHWSurface = GEM_AllocHWSurface;
device->LockHWSurface = GEM_LockHWSurface;
device->UnlockHWSurface = GEM_UnlockHWSurface;
device->FlipHWSurface = GEM_FlipHWSurface;
device->FreeHWSurface = GEM_FreeHWSurface;
device->ToggleFullScreen = NULL /*GEM_ToggleFullScreen */ ;
/* Window manager */
device->SetCaption = GEM_SetCaption;
device->SetIcon = GEM_SetIcon;
device->IconifyWindow = GEM_IconifyWindow;
device->GrabInput = GEM_GrabInput;
/* Events */
device->InitOSKeymap = GEM_InitOSKeymap;
device->PumpEvents = GEM_PumpEvents;
/* Mouse */
device->FreeWMCursor = GEM_FreeWMCursor;
device->CreateWMCursor = GEM_CreateWMCursor;
device->ShowWMCursor = GEM_ShowWMCursor;
device->WarpWMCursor = NULL /*GEM_WarpWMCursor */ ;
device->CheckMouseMode = GEM_CheckMouseMode;
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#if SDL_VIDEO_OPENGL
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/* OpenGL functions */
device->GL_LoadLibrary = SDL_AtariGL_LoadLibrary;
device->GL_GetProcAddress = SDL_AtariGL_GetProcAddress;
device->GL_GetAttribute = SDL_AtariGL_GetAttribute;
device->GL_MakeCurrent = SDL_AtariGL_MakeCurrent;
device->GL_SwapBuffers = GEM_GL_SwapBuffers;
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#endif
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device->hidden->use_dev_mouse =
(SDL_AtariDevMouse_Open() != 0) ? SDL_TRUE : SDL_FALSE;
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vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
if (!(device->hidden->use_dev_mouse)) {
vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
}
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/*if (Getcookie(C_MiNT, &dummy) == C_FOUND) {
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vectors_mask = 0;
} */
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SDL_AtariXbios_InstallVectors(vectors_mask);
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device->free = GEM_DeleteDevice;
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return device;
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}
VideoBootStrap GEM_bootstrap = {
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GEM_VID_DRIVER_NAME, "Atari GEM video driver",
GEM_Available, GEM_CreateDevice
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};
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static void
VDI_ReadExtInfo(_THIS, short *work_out)
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{
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unsigned long EdDI_version;
unsigned long cookie_EdDI;
Uint32 num_colours;
Uint16 clut_type, num_bits;
/* Read EdDI informations */
if (Getcookie(C_EdDI, &cookie_EdDI) == C_NOTFOUND) {
return;
}
EdDI_version = Atari_get_EdDI_version((void *) cookie_EdDI);
vq_scrninfo(VDI_handle, work_out);
VDI_format = work_out[0];
clut_type = work_out[1];
num_bits = work_out[2];
num_colours = *((Uint32 *) & work_out[3]);
/* With EdDI>=1.1, we can have screen pitch, address and format
* so we can directly write to screen without using vro_cpyfm
*/
if (EdDI_version >= EDDI_11) {
VDI_pitch = work_out[5];
VDI_screen = (void *) *((unsigned long *) &work_out[6]);
}
switch (clut_type) {
case VDI_CLUT_HARDWARE:
{
int i;
Uint16 *tmp_p;
tmp_p = (Uint16 *) & work_out[16];
for (i = 0; i < 256; i++) {
vdi_index[*tmp_p++] = i;
}
}
break;
case VDI_CLUT_SOFTWARE:
{
int component; /* red, green, blue, alpha, overlay */
int num_bit;
unsigned short *tmp_p;
/* We can build masks with info here */
tmp_p = (unsigned short *) &work_out[16];
for (component = 0; component < 5; component++) {
for (num_bit = 0; num_bit < 16; num_bit++) {
unsigned short valeur;
valeur = *tmp_p++;
if (valeur == 0xffff) {
continue;
}
switch (component) {
case 0:
VDI_redmask |= 1 << valeur;
break;
case 1:
VDI_greenmask |= 1 << valeur;
break;
case 2:
VDI_bluemask |= 1 << valeur;
break;
case 3:
VDI_alphamask |= 1 << valeur;
break;
}
}
}
}
/* Remove lower green bits for Intel endian screen */
if ((VDI_greenmask == ((7 << 13) | 3))
|| (VDI_greenmask == ((7 << 13) | 7))) {
VDI_greenmask &= ~(7 << 13);
}
break;
case VDI_CLUT_NONE:
break;
}
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}
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int
GEM_VideoInit(_THIS, SDL_PixelFormat * vformat)
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{
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int i, menubar_size;
short work_in[12], work_out[272], dummy;
/* Open AES (Application Environment Services) */
if (appl_init() == -1) {
fprintf(stderr, "Can not open AES\n");
return 1;
}
/* Read version and features */
GEM_version = aes_global[0];
if (GEM_version >= 0x0410) {
short ap_gout[4], errorcode;
GEM_wfeatures = 0;
errorcode =
appl_getinfo(AES_WINDOW, &ap_gout[0], &ap_gout[1], &ap_gout[2],
&ap_gout[3]);
if (errorcode == 0) {
GEM_wfeatures = ap_gout[0];
}
}
/* Ask VDI physical workstation handle opened by AES */
VDI_handle = graf_handle(&dummy, &dummy, &dummy, &dummy);
if (VDI_handle < 1) {
fprintf(stderr, "Wrong VDI handle %d returned by AES\n", VDI_handle);
return 1;
}
/* Open virtual VDI workstation */
work_in[0] = Getrez() + 2;
for (i = 1; i < 10; i++)
work_in[i] = 1;
work_in[10] = 2;
v_opnvwk(work_in, &VDI_handle, work_out);
if (VDI_handle == 0) {
fprintf(stderr, "Can not open VDI virtual workstation\n");
return 1;
}
/* Read fullscreen size */
VDI_w = work_out[0] + 1;
VDI_h = work_out[1] + 1;
/* Read desktop size and position */
if (!wind_get
(DESKTOP_HANDLE, WF_WORKXYWH, &GEM_desk_x, &GEM_desk_y, &GEM_desk_w,
&GEM_desk_h)) {
fprintf(stderr, "Can not read desktop properties\n");
return 1;
}
/* Read bit depth */
vq_extnd(VDI_handle, 1, work_out);
VDI_bpp = work_out[4];
VDI_oldnumcolors = 0;
switch (VDI_bpp) {
case 8:
VDI_pixelsize = 1;
break;
case 15:
case 16:
VDI_pixelsize = 2;
break;
case 24:
VDI_pixelsize = 3;
break;
case 32:
VDI_pixelsize = 4;
break;
default:
fprintf(stderr, "%d bits colour depth not supported\n", VDI_bpp);
return 1;
}
/* Setup hardware -> VDI palette mapping */
for (i = 16; i < 255; i++) {
vdi_index[i] = i;
}
vdi_index[255] = 1;
/* Save current palette */
if (VDI_bpp > 8) {
VDI_oldnumcolors = 1 << 8;
} else {
VDI_oldnumcolors = 1 << VDI_bpp;
}
for (i = 0; i < VDI_oldnumcolors; i++) {
short rgb[3];
vq_color(VDI_handle, i, 0, rgb);
VDI_oldpalette[i][0] = rgb[0];
VDI_oldpalette[i][1] = rgb[1];
VDI_oldpalette[i][2] = rgb[2];
}
VDI_setpalette = GEM_SetNewPalette;
SDL_memcpy(VDI_curpalette, VDI_oldpalette, sizeof(VDI_curpalette));
/* Setup screen info */
GEM_title_name = empty_name;
GEM_icon_name = empty_name;
GEM_handle = -1;
GEM_locked = SDL_FALSE;
GEM_win_fulled = SDL_FALSE;
GEM_fullscreen = SDL_FALSE;
GEM_lock_redraw = SDL_TRUE; /* Prevent redraw till buffers are setup */
VDI_screen = NULL;
VDI_pitch = VDI_w * VDI_pixelsize;
VDI_format = ((VDI_bpp <= 8) ? VDI_FORMAT_INTER : VDI_FORMAT_PACK);
VDI_redmask = VDI_greenmask = VDI_bluemask = VDI_alphamask = 0;
VDI_ReadExtInfo(this, work_out);
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#ifdef DEBUG_VIDEO_GEM
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printf("sdl:video:gem: screen: address=0x%08x, pitch=%d\n", VDI_screen,
VDI_pitch);
printf("sdl:video:gem: format=%d\n", VDI_format);
printf("sdl:video:gem: masks: 0x%08x, 0x%08x, 0x%08x, 0x%08x\n",
VDI_alphamask, VDI_redmask, VDI_greenmask, VDI_bluemask);
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#endif
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/* Setup destination mfdb */
VDI_dst_mfdb.fd_addr = NULL;
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/* Determine the current screen size */
this->info.current_w = VDI_w;
this->info.current_h = VDI_h;
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/* Determine the screen depth */
/* we change this during the SDL_SetVideoMode implementation... */
vformat->BitsPerPixel = VDI_bpp;
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/* Set mouse cursor to arrow */
graf_mouse(ARROW, NULL);
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/* Init chunky to planar routine */
SDL_Atari_C2pConvert = SDL_Atari_C2pConvert8;
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/* Setup VDI fill functions */
vsf_color(VDI_handle, 0);
vsf_interior(VDI_handle, 1);
vsf_perimeter(VDI_handle, 0);
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/* Menu bar save buffer */
menubar_size = GEM_desk_w * GEM_desk_y * VDI_pixelsize;
GEM_menubar = Atari_SysMalloc(menubar_size, MX_PREFTTRAM);
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/* Fill video modes list */
SDL_modelist[0] = SDL_malloc(sizeof(SDL_Rect));
SDL_modelist[0]->x = 0;
SDL_modelist[0]->y = 0;
SDL_modelist[0]->w = VDI_w;
SDL_modelist[0]->h = VDI_h;
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SDL_modelist[1] = NULL;
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#if SDL_VIDEO_OPENGL
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SDL_AtariGL_InitPointers(this);
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#endif
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this->info.wm_available = 1;
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/* We're done! */
return (0);
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}
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SDL_Rect **
GEM_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags)
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{
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if (format->BitsPerPixel != VDI_bpp) {
return ((SDL_Rect **) NULL);
}
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if (flags & SDL_FULLSCREEN) {
return (SDL_modelist);
}
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return ((SDL_Rect **) - 1);
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}
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static void
GEM_FreeBuffers(_THIS)
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{
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/* Release buffer */
if (GEM_buffer2) {
Mfree(GEM_buffer2);
GEM_buffer2 = NULL;
}
if (GEM_buffer1) {
Mfree(GEM_buffer1);
GEM_buffer1 = NULL;
}
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}
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static void
GEM_ClearRect(_THIS, short *rect)
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{
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short oldrgb[3], rgb[3] = { 0, 0, 0 };
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vq_color(VDI_handle, vdi_index[0], 0, oldrgb);
vs_color(VDI_handle, vdi_index[0], rgb);
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vsf_color(VDI_handle, 0);
vsf_interior(VDI_handle, 1);
vsf_perimeter(VDI_handle, 0);
v_bar(VDI_handle, rect);
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vs_color(VDI_handle, vdi_index[0], oldrgb);
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}
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static void
GEM_ClearScreen(_THIS)
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{
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short pxy[4];
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v_hide_c(VDI_handle);
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pxy[0] = pxy[1] = 0;
pxy[2] = VDI_w - 1;
pxy[3] = VDI_h - 1;
GEM_ClearRect(this, pxy);
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v_show_c(VDI_handle, 1);
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}
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static void
GEM_SetNewPalette(_THIS, Uint16 newpal[256][3])
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{
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int i;
short rgb[3];
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if (VDI_oldnumcolors == 0)
return;
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for (i = 0; i < VDI_oldnumcolors; i++) {
rgb[0] = newpal[i][0];
rgb[1] = newpal[i][1];
rgb[2] = newpal[i][2];
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vs_color(VDI_handle, i, rgb);
}
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}
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static void
GEM_LockScreen(_THIS)
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{
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if (!GEM_locked) {
/* Lock AES */
wind_update(BEG_UPDATE);
wind_update(BEG_MCTRL);
/* Reserve memory space, used to be sure of compatibility */
form_dial(FMD_START, 0, 0, 0, 0, 0, 0, VDI_w, VDI_h);
/* Save menu bar */
if (GEM_menubar) {
MFDB mfdb_src;
short blitcoords[8];
mfdb_src.fd_addr = GEM_menubar;
mfdb_src.fd_w = GEM_desk_w;
mfdb_src.fd_h = GEM_desk_y;
mfdb_src.fd_wdwidth = GEM_desk_w >> 4;
mfdb_src.fd_nplanes = VDI_bpp;
mfdb_src.fd_stand =
mfdb_src.fd_r1 = mfdb_src.fd_r2 = mfdb_src.fd_r3 = 0;
blitcoords[0] = blitcoords[4] = 0;
blitcoords[1] = blitcoords[5] = 0;
blitcoords[2] = blitcoords[6] = GEM_desk_w - 1;
blitcoords[3] = blitcoords[7] = GEM_desk_y - 1;
vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &VDI_dst_mfdb,
&mfdb_src);
}
GEM_locked = SDL_TRUE;
}
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}
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static void
GEM_UnlockScreen(_THIS)
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{
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if (GEM_locked) {
/* Restore menu bar */
if (GEM_menubar) {
MFDB mfdb_src;
short blitcoords[8];
mfdb_src.fd_addr = GEM_menubar;
mfdb_src.fd_w = GEM_desk_w;
mfdb_src.fd_h = GEM_desk_y;
mfdb_src.fd_wdwidth = GEM_desk_w >> 4;
mfdb_src.fd_nplanes = VDI_bpp;
mfdb_src.fd_stand =
mfdb_src.fd_r1 = mfdb_src.fd_r2 = mfdb_src.fd_r3 = 0;
blitcoords[0] = blitcoords[4] = 0;
blitcoords[1] = blitcoords[5] = 0;
blitcoords[2] = blitcoords[6] = GEM_desk_w - 1;
blitcoords[3] = blitcoords[7] = GEM_desk_y - 1;
vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src,
&VDI_dst_mfdb);
}
/* Restore screen memory, and send REDRAW to all apps */
form_dial(FMD_FINISH, 0, 0, 0, 0, 0, 0, VDI_w, VDI_h);
/* Unlock AES */
wind_update(END_MCTRL);
wind_update(END_UPDATE);
GEM_locked = SDL_FALSE;
}
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}
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SDL_Surface *
GEM_SetVideoMode(_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
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{
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Uint32 modeflags, screensize;
SDL_bool use_shadow1, use_shadow2;
/* width must be multiple of 16, for vro_cpyfm() and c2p_convert() */
if ((width & 15) != 0) {
width = (width | 15) + 1;
}
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/*--- Verify if asked mode can be used ---*/
if (VDI_bpp != bpp) {
SDL_SetError("%d bpp mode not supported", bpp);
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return (NULL);
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}
if (flags & SDL_FULLSCREEN) {
if ((VDI_w < width) || (VDI_h < height)) {
SDL_SetError("%dx%d mode is too large", width, height);
return (NULL);
}
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}
/*--- Allocate the new pixel format for the screen ---*/
if (!SDL_ReallocFormat
(current, VDI_bpp, VDI_redmask, VDI_greenmask, VDI_bluemask,
VDI_alphamask)) {
SDL_SetError("Couldn't allocate new pixel format for requested mode");
return (NULL);
}
screensize = width * height * VDI_pixelsize;
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#ifdef DEBUG_VIDEO_GEM
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printf("sdl:video:gem: setvideomode(): %dx%dx%d = %d\n", width, height,
bpp, screensize);
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#endif
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/*--- Allocate shadow buffers if needed, and conversion operations ---*/
GEM_FreeBuffers(this);
GEM_bufops = 0;
use_shadow1 = use_shadow2 = SDL_FALSE;
if (VDI_screen && (flags & SDL_FULLSCREEN)) {
if (VDI_format == VDI_FORMAT_INTER) {
use_shadow1 = SDL_TRUE;
GEM_bufops = B2S_C2P_1TOS;
}
} else {
use_shadow1 = SDL_TRUE;
if (VDI_format == VDI_FORMAT_PACK) {
GEM_bufops = B2S_VROCPYFM_1TOS;
} else {
use_shadow2 = SDL_TRUE;
GEM_bufops = B2S_C2P_1TO2 | B2S_VROCPYFM_2TOS;
}
}
if (use_shadow1) {
GEM_buffer1 = Atari_SysMalloc(screensize, MX_PREFTTRAM);
if (GEM_buffer1 == NULL) {
SDL_SetError("Can not allocate %d KB for frame buffer",
screensize >> 10);
return NULL;
}
SDL_memset(GEM_buffer1, 0, screensize);
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#ifdef DEBUG_VIDEO_GEM
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printf("sdl:video:gem: setvideomode(): allocated buffer 1\n");
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#endif
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}
if (use_shadow2) {
GEM_buffer2 = Atari_SysMalloc(screensize, MX_PREFTTRAM);
if (GEM_buffer2 == NULL) {
SDL_SetError("Can not allocate %d KB for shadow buffer",
screensize >> 10);
return NULL;
}
SDL_memset(GEM_buffer2, 0, screensize);
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#ifdef DEBUG_VIDEO_GEM
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printf("sdl:video:gem: setvideomode(): allocated buffer 2\n");
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#endif
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}
/*--- Initialize screen ---*/
modeflags = SDL_PREALLOC;
if (VDI_bpp == 8) {
modeflags |= SDL_HWPALETTE;
}
if (flags & SDL_FULLSCREEN) {
GEM_LockScreen(this);
GEM_ClearScreen(this);
modeflags |= SDL_FULLSCREEN;
if (VDI_screen && (VDI_format == VDI_FORMAT_PACK) && !use_shadow1) {
modeflags |= SDL_HWSURFACE;
} else {
modeflags |= SDL_SWSURFACE;
}
GEM_fullscreen = SDL_TRUE;
} else {
int old_win_type;
short x2, y2, w2, h2;
GEM_UnlockScreen(this);
/* Set window gadgets */
old_win_type = GEM_win_type;
if (!(flags & SDL_NOFRAME)) {
GEM_win_type = NAME | MOVER | CLOSER | SMALLER;
if (flags & SDL_RESIZABLE) {
GEM_win_type |= FULLER | SIZER;
modeflags |= SDL_RESIZABLE;
}
} else {
GEM_win_type = 0;
modeflags |= SDL_NOFRAME;
}
modeflags |= SDL_SWSURFACE;
/* Recreate window ? only for different widget or non-created window */
if ((old_win_type != GEM_win_type) || (GEM_handle < 0)) {
/* Calculate window size */
if (!wind_calc
(WC_BORDER, GEM_win_type, 0, 0, width, height, &x2, &y2,
&w2, &h2)) {
GEM_FreeBuffers(this);
SDL_SetError("Can not calculate window attributes");
return NULL;
}
/* Center window */
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x2 = (GEM_desk_w - w2) >> 1;
y2 = (GEM_desk_h - h2) >> 1;
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if (x2 < 0) {
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x2 = 0;
}
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if (y2 < 0) {
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y2 = 0;
}
x2 += GEM_desk_x;
y2 += GEM_desk_y;
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/* Destroy existing window */
if (GEM_handle >= 0) {
wind_close(GEM_handle);
wind_delete(GEM_handle);
}
/* Create window */
GEM_handle = wind_create(GEM_win_type, x2, y2, w2, h2);
if (GEM_handle < 0) {
GEM_FreeBuffers(this);
SDL_SetError("Can not create window");
return NULL;
}
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#ifdef DEBUG_VIDEO_GEM
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printf("sdl:video:gem: handle=%d\n", GEM_handle);
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#endif
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/* Setup window name */
wind_set(GEM_handle, WF_NAME,
(short) (((unsigned long) GEM_title_name) >> 16),
(short) (((unsigned long) GEM_title_name) & 0xffff),
0, 0);
GEM_refresh_name = SDL_FALSE;
/* Open the window */
wind_open(GEM_handle, x2, y2, w2, h2);
} else {
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/* Resize window to fit asked video mode */
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wind_get(GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);
if (wind_calc
(WC_BORDER, GEM_win_type, x2, y2, width, height, &x2, &y2,
&w2, &h2)) {
wind_set(GEM_handle, WF_CURRXYWH, x2, y2, w2, h2);
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}
}
GEM_fullscreen = SDL_FALSE;
}
/* Set up the new mode framebuffer */
current->w = width;
current->h = height;
if (use_shadow1) {
current->pixels = GEM_buffer1;
current->pitch = width * VDI_pixelsize;
} else {
current->pixels = VDI_screen;
current->pitch = VDI_pitch;
}
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#if SDL_VIDEO_OPENGL
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if (flags & SDL_INTERNALOPENGL) {
if (!SDL_AtariGL_Init(this, current)) {
GEM_FreeBuffers(this);
SDL_SetError("Can not create OpenGL context");
return NULL;
}
modeflags |= SDL_INTERNALOPENGL;
}
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#endif
848
current->flags = modeflags;
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850
#ifdef DEBUG_VIDEO_GEM
851
printf("sdl:video:gem: surface: %dx%d\n", current->w, current->h);
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#endif
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this->UpdateRects = GEM_UpdateRects;
GEM_lock_redraw = SDL_FALSE; /* Enable redraw */
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/* We're done */
return (current);
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}
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static int
GEM_AllocHWSurface(_THIS, SDL_Surface * surface)
863
{
864
return -1;
865
}
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868
static void
GEM_FreeHWSurface(_THIS, SDL_Surface * surface)
869
{
870
return;
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}
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static int
GEM_LockHWSurface(_THIS, SDL_Surface * surface)
875
{
876
return (0);
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}
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880
static void
GEM_UnlockHWSurface(_THIS, SDL_Surface * surface)
881
{
882
return;
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}
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static void
GEM_UpdateRectsFullscreen(_THIS, int numrects, SDL_Rect * rects)
887
{
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SDL_Surface *surface;
int i, surf_width;
surface = this->screen;
/* Need to be a multiple of 16 pixels */
surf_width = surface->w;
if ((surf_width & 15) != 0) {
surf_width = (surf_width | 15) + 1;
}
if (GEM_bufops & (B2S_C2P_1TO2 | B2S_C2P_1TOS)) {
void *destscr;
int destpitch;
if (GEM_bufops & B2S_C2P_1TOS) {
destscr = VDI_screen;
destpitch = VDI_pitch;
} else {
destscr = GEM_buffer2;
destpitch = surface->pitch;
}
for (i = 0; i < numrects; i++) {
void *source, *destination;
int x1, x2;
x1 = rects[i].x & ~15;
x2 = rects[i].x + rects[i].w;
if (x2 & 15) {
x2 = (x2 | 15) + 1;
}
source = surface->pixels;
source += surface->pitch * rects[i].y;
source += x1;
destination = destscr;
destination += destpitch * rects[i].y;
destination += x1;
SDL_Atari_C2pConvert(source, destination,
x2 - x1, rects[i].h,
SDL_FALSE, surface->pitch, destpitch);
}
}
if (GEM_bufops & (B2S_VROCPYFM_1TOS | B2S_VROCPYFM_2TOS)) {
MFDB mfdb_src;
short blitcoords[8];
mfdb_src.fd_addr = surface->pixels;
mfdb_src.fd_w = surf_width;
mfdb_src.fd_h = surface->h;
mfdb_src.fd_wdwidth = (surface->pitch / VDI_pixelsize) >> 4;
mfdb_src.fd_nplanes = surface->format->BitsPerPixel;
mfdb_src.fd_stand =
mfdb_src.fd_r1 = mfdb_src.fd_r2 = mfdb_src.fd_r3 = 0;
if (GEM_bufops & B2S_VROCPYFM_2TOS) {
mfdb_src.fd_addr = GEM_buffer2;
}
for (i = 0; i < numrects; ++i) {
blitcoords[0] = blitcoords[4] = rects[i].x;
blitcoords[1] = blitcoords[5] = rects[i].y;
blitcoords[2] = blitcoords[6] = rects[i].x + rects[i].w - 1;
blitcoords[3] = blitcoords[7] = rects[i].y + rects[i].h - 1;
vro_cpyfm(VDI_handle, S_ONLY, blitcoords, &mfdb_src,
&VDI_dst_mfdb);
}
}
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}
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962
static void
GEM_UpdateRectsWindowed(_THIS, int numrects, SDL_Rect * rects)
963
{
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980
short pxy[4], wind_pxy[4];
int i;
if (wind_get
(GEM_handle, WF_WORKXYWH, &wind_pxy[0], &wind_pxy[1], &wind_pxy[2],
&wind_pxy[3]) == 0) {
return;
}
for (i = 0; i < numrects; ++i) {
pxy[0] = wind_pxy[0] + rects[i].x;
pxy[1] = wind_pxy[1] + rects[i].y;
pxy[2] = rects[i].w;
pxy[3] = rects[i].h;
GEM_wind_redraw(this, GEM_handle, pxy);
}
981
982
}
983
984
static void
GEM_UpdateRects(_THIS, int numrects, SDL_Rect * rects)
985
{
986
SDL_Surface *surface;
987
988
989
990
if (GEM_lock_redraw) {
return;
}
991
992
surface = this->screen;
993
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998
if (surface->flags & SDL_FULLSCREEN) {
GEM_UpdateRectsFullscreen(this, numrects, rects);
} else {
GEM_UpdateRectsWindowed(this, numrects, rects);
}
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}