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2026-03-23 12:11:07 +01:00
commit e64eb40b38
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifndef SDL_riscosdefs_h_
#define SDL_riscosdefs_h_
typedef struct sprite_area
{
int size; // +0
int count; // +4
int start; // +8
int end; // +12
} sprite_area;
SDL_COMPILE_TIME_ASSERT(sprite_area, sizeof(sprite_area) == 16);
typedef struct sprite_header
{
int next; // +0
char name[12]; // +4
int width; // +16
int height; // +20
int first_bit; // +24
int last_bit; // +28
int image_offset; // +32
int mask_offset; // +36
int mode; // +40
} sprite_header;
SDL_COMPILE_TIME_ASSERT(sprite_header, sizeof(sprite_header) == 44);
#endif // SDL_riscosdefs_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "../../events/SDL_events_c.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscosevents_c.h"
#include "scancodes_riscos.h"
#include <kernel.h>
#include <swis.h>
static SDL_Scancode SDL_RISCOS_translate_keycode(int keycode)
{
SDL_Scancode scancode = SDL_SCANCODE_UNKNOWN;
if (keycode < SDL_arraysize(riscos_scancode_table)) {
scancode = riscos_scancode_table[keycode];
#ifdef DEBUG_SCANCODES
if (scancode == SDL_SCANCODE_UNKNOWN) {
SDL_Log("The key you just pressed is not recognized by SDL: %d", keycode);
}
#endif
}
return scancode;
}
void RISCOS_PollKeyboard(SDL_VideoDevice *_this)
{
SDL_VideoData *internal = _this->internal;
Uint8 key = 2;
int i;
// Check for key releases
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
if (internal->key_pressed[i] != 255) {
if ((_kernel_osbyte(129, internal->key_pressed[i] ^ 0xff, 0xff) & 0xff) != 255) {
SDL_SendKeyboardKey(0, SDL_DEFAULT_KEYBOARD_ID, internal->key_pressed[i], SDL_RISCOS_translate_keycode(internal->key_pressed[i]), false);
internal->key_pressed[i] = 255;
}
}
}
// Check for key presses
while (key < 0xff) {
key = _kernel_osbyte(121, key + 1, 0) & 0xff;
switch (key) {
case 255:
// Ignore mouse keys
case 9:
case 10:
case 11:
// Ignore keys with multiple INKEY codes
case 24:
case 40:
case 71:
case 87:
break;
default:
SDL_SendKeyboardKey(0, SDL_DEFAULT_KEYBOARD_ID, key, SDL_RISCOS_translate_keycode(key), true);
// Record the press so we can detect release later.
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
if (internal->key_pressed[i] == key) {
break;
}
if (internal->key_pressed[i] == 255) {
internal->key_pressed[i] = key;
break;
}
}
}
}
}
static const Uint8 mouse_button_map[] = {
SDL_BUTTON_RIGHT,
SDL_BUTTON_MIDDLE,
SDL_BUTTON_LEFT,
SDL_BUTTON_X1,
SDL_BUTTON_X2,
SDL_BUTTON_X2 + 1,
SDL_BUTTON_X2 + 2,
SDL_BUTTON_X2 + 3
};
void RISCOS_PollMouse(SDL_VideoDevice *_this)
{
SDL_VideoData *internal = _this->internal;
SDL_Mouse *mouse = SDL_GetMouse();
SDL_Rect rect;
_kernel_swi_regs regs;
int i, x, y, buttons;
if (!SDL_GetDisplayBounds(SDL_GetPrimaryDisplay(), &rect)) {
return;
}
_kernel_swi(OS_Mouse, &regs, &regs);
x = (regs.r[0] >> 1);
y = rect.h - (regs.r[1] >> 1);
buttons = regs.r[2];
if (mouse->x != x || mouse->y != y) {
SDL_SendMouseMotion(0, mouse->focus, SDL_DEFAULT_MOUSE_ID, false, (float)x, (float)y);
}
if (internal->last_mouse_buttons != buttons) {
for (i = 0; i < SDL_arraysize(mouse_button_map); i++) {
bool down = ((buttons & (1 << i)) != 0);
SDL_SendMouseButton(0, mouse->focus, SDL_DEFAULT_MOUSE_ID, mouse_button_map[i], down);
}
internal->last_mouse_buttons = buttons;
}
}
bool RISCOS_InitEvents(SDL_VideoDevice *_this)
{
SDL_VideoData *internal = _this->internal;
_kernel_swi_regs regs;
int i, status;
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
internal->key_pressed[i] = 255;
}
status = (_kernel_osbyte(202, 0, 255) & 0xFF);
SDL_ToggleModState(SDL_KMOD_NUM, (status & (1 << 2)) ? false : true);
SDL_ToggleModState(SDL_KMOD_CAPS, (status & (1 << 4)) ? false : true);
SDL_ToggleModState(SDL_KMOD_SCROLL, (status & (1 << 1)) ? true : false);
_kernel_swi(OS_Mouse, &regs, &regs);
internal->last_mouse_buttons = regs.r[2];
// Disable escape.
_kernel_osbyte(229, 1, 0);
return true;
}
void RISCOS_PumpEvents(SDL_VideoDevice *_this)
{
RISCOS_PollMouse(_this);
RISCOS_PollKeyboard(_this);
}
void RISCOS_QuitEvents(SDL_VideoDevice *_this)
{
// Re-enable escape.
_kernel_osbyte(229, 0, 0);
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef SDL_riscosevents_c_h_
#define SDL_riscosevents_c_h_
#include "SDL_internal.h"
#include "SDL_riscosvideo.h"
extern bool RISCOS_InitEvents(SDL_VideoDevice *_this);
extern void RISCOS_PumpEvents(SDL_VideoDevice *_this);
extern void RISCOS_QuitEvents(SDL_VideoDevice *_this);
#endif // SDL_riscosevents_c_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "../SDL_sysvideo.h"
#include "SDL_riscosframebuffer_c.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscoswindow.h"
#include <kernel.h>
#include <swis.h>
bool RISCOS_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch)
{
SDL_WindowData *internal = window->internal;
const char *sprite_name = "display";
unsigned int sprite_mode;
_kernel_oserror *error;
_kernel_swi_regs regs;
const SDL_DisplayMode *mode;
int size;
int w, h;
SDL_GetWindowSizeInPixels(window, &w, &h);
// Free the old framebuffer surface
RISCOS_DestroyWindowFramebuffer(_this, window);
// Create a new one
mode = SDL_GetCurrentDisplayMode(SDL_GetDisplayForWindow(window));
if ((SDL_ISPIXELFORMAT_PACKED(mode->format) || SDL_ISPIXELFORMAT_ARRAY(mode->format))) {
*format = mode->format;
sprite_mode = (unsigned int)mode->internal;
} else {
*format = SDL_PIXELFORMAT_XBGR8888;
sprite_mode = (1 | (90 << 1) | (90 << 14) | (6 << 27));
}
// Calculate pitch
*pitch = (((w * SDL_BYTESPERPIXEL(*format)) + 3) & ~3);
// Allocate the sprite area
size = sizeof(sprite_area) + sizeof(sprite_header) + ((*pitch) * h);
internal->fb_area = SDL_malloc(size);
if (!internal->fb_area) {
return false;
}
internal->fb_area->size = size;
internal->fb_area->count = 0;
internal->fb_area->start = 16;
internal->fb_area->end = 16;
// Create the actual image
regs.r[0] = 256 + 15;
regs.r[1] = (int)internal->fb_area;
regs.r[2] = (int)sprite_name;
regs.r[3] = 0;
regs.r[4] = w;
regs.r[5] = h;
regs.r[6] = sprite_mode;
error = _kernel_swi(OS_SpriteOp, &regs, &regs);
if (error) {
SDL_free(internal->fb_area);
return SDL_SetError("Unable to create sprite: %s (%i)", error->errmess, error->errnum);
}
internal->fb_sprite = (sprite_header *)(((Uint8 *)internal->fb_area) + internal->fb_area->start);
*pixels = ((Uint8 *)internal->fb_sprite) + internal->fb_sprite->image_offset;
return true;
}
bool RISCOS_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects)
{
SDL_WindowData *internal = window->internal;
_kernel_swi_regs regs;
_kernel_oserror *error;
regs.r[0] = 512 + 52;
regs.r[1] = (int)internal->fb_area;
regs.r[2] = (int)internal->fb_sprite;
regs.r[3] = 0; // window->x << 1;
regs.r[4] = 0; // window->y << 1;
regs.r[5] = 0x50;
regs.r[6] = 0;
regs.r[7] = 0;
error = _kernel_swi(OS_SpriteOp, &regs, &regs);
if (error) {
return SDL_SetError("OS_SpriteOp 52 failed: %s (%i)", error->errmess, error->errnum);
}
return true;
}
void RISCOS_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_WindowData *internal = window->internal;
if (internal->fb_area) {
SDL_free(internal->fb_area);
internal->fb_area = NULL;
}
internal->fb_sprite = NULL;
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef SDL_riscosframebuffer_c_h_
#define SDL_riscosframebuffer_c_h_
#include "SDL_internal.h"
extern bool RISCOS_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch);
extern bool RISCOS_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects);
extern void RISCOS_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window);
#endif // SDL_riscosframebuffer_c_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "SDL_riscosmessagebox.h"
#include <kernel.h>
#include <swis.h>
bool RISCOS_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonID)
{
_kernel_swi_regs regs;
_kernel_oserror error;
char buttonstring[1024];
int i;
error.errnum = 0;
SDL_strlcpy(error.errmess, messageboxdata->message, 252);
regs.r[0] = (unsigned int)&error;
regs.r[1] = (1 << 8) | (1 << 4);
if (messageboxdata->flags & SDL_MESSAGEBOX_INFORMATION) {
regs.r[1] |= (1 << 9);
} else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) {
regs.r[1] |= (2 << 9);
}
regs.r[2] = (unsigned int)messageboxdata->title;
regs.r[3] = 0;
regs.r[4] = 0;
SDL_strlcpy(buttonstring, "", 1024);
for (i = 0; i < messageboxdata->numbuttons; i++) {
SDL_strlcat(buttonstring, messageboxdata->buttons[i].text, 1024);
if (i + 1 < messageboxdata->numbuttons) {
SDL_strlcat(buttonstring, ",", 1024);
}
}
regs.r[5] = (unsigned int)buttonstring;
_kernel_swi(Wimp_ReportError, &regs, &regs);
*buttonID = (regs.r[1] == 0) ? -1 : messageboxdata->buttons[regs.r[1] - 3].buttonID;
return true;
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
extern bool RISCOS_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonID);
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "../SDL_sysvideo.h"
#include "../../events/SDL_mouse_c.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscosmodes.h"
#include <kernel.h>
#include <swis.h>
enum
{
MODE_FLAG_565 = 1 << 7,
MODE_FLAG_COLOUR_SPACE = 0xF << 12,
MODE_FLAG_TBGR = 0,
MODE_FLAG_TRGB = 1 << 14,
MODE_FLAG_ABGR = 1 << 15,
MODE_FLAG_ARGB = MODE_FLAG_TRGB | MODE_FLAG_ABGR
};
static const struct
{
SDL_PixelFormat pixel_format;
int modeflags, ncolour, log2bpp;
} mode_to_pixelformat[] = {
// { SDL_PIXELFORMAT_INDEX1LSB, 0, 1, 0 },
// { SDL_PIXELFORMAT_INDEX2LSB, 0, 3, 1 },
// { SDL_PIXELFORMAT_INDEX4LSB, 0, 15, 2 },
// { SDL_PIXELFORMAT_INDEX8, MODE_FLAG_565, 255, 3 },
{ SDL_PIXELFORMAT_XBGR1555, MODE_FLAG_TBGR, 65535, 4 },
{ SDL_PIXELFORMAT_XRGB1555, MODE_FLAG_TRGB, 65535, 4 },
{ SDL_PIXELFORMAT_ABGR1555, MODE_FLAG_ABGR, 65535, 4 },
{ SDL_PIXELFORMAT_ARGB1555, MODE_FLAG_ARGB, 65535, 4 },
{ SDL_PIXELFORMAT_XBGR4444, MODE_FLAG_TBGR, 4095, 4 },
{ SDL_PIXELFORMAT_XRGB4444, MODE_FLAG_TRGB, 4095, 4 },
{ SDL_PIXELFORMAT_ABGR4444, MODE_FLAG_ABGR, 4095, 4 },
{ SDL_PIXELFORMAT_ARGB4444, MODE_FLAG_ARGB, 4095, 4 },
{ SDL_PIXELFORMAT_BGR565, MODE_FLAG_TBGR | MODE_FLAG_565, 65535, 4 },
{ SDL_PIXELFORMAT_RGB565, MODE_FLAG_TRGB | MODE_FLAG_565, 65535, 4 },
{ SDL_PIXELFORMAT_BGR24, MODE_FLAG_TBGR, 16777215, 6 },
{ SDL_PIXELFORMAT_RGB24, MODE_FLAG_TRGB, 16777215, 6 },
{ SDL_PIXELFORMAT_XBGR8888, MODE_FLAG_TBGR, -1, 5 },
{ SDL_PIXELFORMAT_XRGB8888, MODE_FLAG_TRGB, -1, 5 },
{ SDL_PIXELFORMAT_ABGR8888, MODE_FLAG_ABGR, -1, 5 },
{ SDL_PIXELFORMAT_ARGB8888, MODE_FLAG_ARGB, -1, 5 }
};
static SDL_PixelFormat RISCOS_ModeToPixelFormat(int ncolour, int modeflags, int log2bpp)
{
int i;
for (i = 0; i < SDL_arraysize(mode_to_pixelformat); i++) {
if (log2bpp == mode_to_pixelformat[i].log2bpp &&
(ncolour == mode_to_pixelformat[i].ncolour || ncolour == 0) &&
(modeflags & (MODE_FLAG_565 | MODE_FLAG_COLOUR_SPACE)) == mode_to_pixelformat[i].modeflags) {
return mode_to_pixelformat[i].pixel_format;
}
}
return SDL_PIXELFORMAT_UNKNOWN;
}
static size_t measure_mode_block(const int *block)
{
size_t blockSize = ((block[0] & 0xFF) == 3) ? 7 : 5;
while (block[blockSize] != -1) {
blockSize += 2;
}
blockSize++;
return blockSize * 4;
}
static bool read_mode_variable(int *block, int var)
{
_kernel_swi_regs regs;
regs.r[0] = (int)block;
regs.r[1] = var;
_kernel_swi(OS_ReadModeVariable, &regs, &regs);
return regs.r[2];
}
static bool read_mode_block(int *block, SDL_DisplayMode *mode, bool extended)
{
int xres, yres, ncolour, modeflags, log2bpp, rate;
if ((block[0] & 0xFF) == 1) {
xres = block[1];
yres = block[2];
log2bpp = block[3];
rate = block[4];
ncolour = (1 << (1 << log2bpp)) - 1;
modeflags = MODE_FLAG_TBGR;
} else if ((block[0] & 0xFF) == 3) {
xres = block[1];
yres = block[2];
ncolour = block[3];
modeflags = block[4];
log2bpp = block[5];
rate = block[6];
} else {
return false;
}
if (extended) {
xres = read_mode_variable(block, 11) + 1;
yres = read_mode_variable(block, 12) + 1;
log2bpp = read_mode_variable(block, 9);
ncolour = read_mode_variable(block, 3);
modeflags = read_mode_variable(block, 0);
}
SDL_zerop(mode);
mode->w = xres;
mode->h = yres;
mode->format = RISCOS_ModeToPixelFormat(ncolour, modeflags, log2bpp);
mode->refresh_rate = (float)rate;
return true;
}
static void *convert_mode_block(const int *block)
{
int xres, yres, log2bpp, rate, ncolour = 0, modeflags = 0;
size_t pos = 0;
int *dst;
if ((block[0] & 0xFF) == 1) {
xres = block[1];
yres = block[2];
log2bpp = block[3];
rate = block[4];
} else if ((block[0] & 0xFF) == 3) {
xres = block[1];
yres = block[2];
ncolour = block[3];
modeflags = block[4];
log2bpp = block[5];
rate = block[6];
} else {
return NULL;
}
dst = SDL_malloc(40);
if (!dst) {
return NULL;
}
dst[pos++] = 1;
dst[pos++] = xres;
dst[pos++] = yres;
dst[pos++] = log2bpp;
dst[pos++] = rate;
if (ncolour != 0) {
dst[pos++] = 3;
dst[pos++] = ncolour;
}
if (modeflags != 0) {
dst[pos++] = 0;
dst[pos++] = modeflags;
}
dst[pos++] = -1;
return dst;
}
static void *copy_memory(const void *src, size_t size, size_t alloc)
{
void *dst = SDL_malloc(alloc);
if (dst) {
SDL_memcpy(dst, src, size);
}
return dst;
}
bool RISCOS_InitModes(SDL_VideoDevice *_this)
{
SDL_DisplayMode mode;
int *current_mode;
_kernel_swi_regs regs;
_kernel_oserror *error;
size_t size;
regs.r[0] = 1;
error = _kernel_swi(OS_ScreenMode, &regs, &regs);
if (error) {
return SDL_SetError("Unable to retrieve the current screen mode: %s (%i)", error->errmess, error->errnum);
}
current_mode = (int *)regs.r[1];
if (!read_mode_block(current_mode, &mode, true)) {
return SDL_SetError("Unsupported mode block format %d", current_mode[0]);
}
size = measure_mode_block(current_mode);
mode.internal = copy_memory(current_mode, size, size);
if (!mode.internal) {
return false;
}
if (SDL_AddBasicVideoDisplay(&mode) == 0) {
return false;
}
return true;
}
bool RISCOS_GetDisplayModes(SDL_VideoDevice *_this, SDL_VideoDisplay *display)
{
SDL_DisplayMode mode;
_kernel_swi_regs regs;
_kernel_oserror *error;
void *block, *pos;
regs.r[0] = 2;
regs.r[2] = 0;
regs.r[6] = 0;
regs.r[7] = 0;
error = _kernel_swi(OS_ScreenMode, &regs, &regs);
if (error) {
return SDL_SetError("Unable to enumerate screen modes: %s (%i)", error->errmess, error->errnum);
}
block = SDL_malloc(-regs.r[7]);
if (!block) {
return false;
}
regs.r[6] = (int)block;
regs.r[7] = -regs.r[7];
error = _kernel_swi(OS_ScreenMode, &regs, &regs);
if (error) {
SDL_free(block);
return SDL_SetError("Unable to enumerate screen modes: %s (%i)", error->errmess, error->errnum);
}
for (pos = block; pos < (void *)regs.r[6]; pos += *((int *)pos)) {
if (!read_mode_block(pos + 4, &mode, false)) {
continue;
}
if (mode.format == SDL_PIXELFORMAT_UNKNOWN) {
continue;
}
mode.internal = convert_mode_block(pos + 4);
if (!mode.internal) {
SDL_free(block);
return false;
}
if (!SDL_AddFullscreenDisplayMode(display, &mode)) {
SDL_free(mode.internal);
}
}
SDL_free(block);
return true;
}
bool RISCOS_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
{
const char disable_cursor[] = { 23, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
_kernel_swi_regs regs;
_kernel_oserror *error;
int i;
regs.r[0] = 0;
regs.r[1] = (int)mode->internal;
error = _kernel_swi(OS_ScreenMode, &regs, &regs);
if (error) {
return SDL_SetError("Unable to set the current screen mode: %s (%i)", error->errmess, error->errnum);
}
// Turn the text cursor off
for (i = 0; i < SDL_arraysize(disable_cursor); i++) {
_kernel_oswrch(disable_cursor[i]);
}
// Update cursor visibility, since it may have been disabled by the mode change.
SDL_RedrawCursor();
return true;
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifndef SDL_riscosmodes_h_
#define SDL_riscosmodes_h_
extern bool RISCOS_InitModes(SDL_VideoDevice *_this);
extern bool RISCOS_GetDisplayModes(SDL_VideoDevice *_this, SDL_VideoDisplay *display);
extern bool RISCOS_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
#endif // SDL_riscosmodes_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "SDL_riscosvideo.h"
#include "SDL_riscosmouse.h"
#include "../../events/SDL_mouse_c.h"
#include <kernel.h>
static SDL_Cursor *RISCOS_CreateDefaultCursor(void)
{
SDL_Cursor *cursor = SDL_calloc(1, sizeof(*cursor));
if (cursor) {
// NULL is used to indicate the default cursor
cursor->internal = NULL;
}
return cursor;
}
static void RISCOS_FreeCursor(SDL_Cursor *cursor)
{
SDL_free(cursor);
}
static bool RISCOS_ShowCursor(SDL_Cursor *cursor)
{
if (cursor) {
// Turn the mouse pointer on
_kernel_osbyte(106, 1, 0);
} else {
// Turn the mouse pointer off
_kernel_osbyte(106, 0, 0);
}
return true;
}
bool RISCOS_InitMouse(SDL_VideoDevice *_this)
{
SDL_Mouse *mouse = SDL_GetMouse();
// mouse->CreateCursor = RISCOS_CreateCursor;
// mouse->CreateSystemCursor = RISCOS_CreateSystemCursor;
mouse->ShowCursor = RISCOS_ShowCursor;
mouse->FreeCursor = RISCOS_FreeCursor;
// mouse->WarpMouse = RISCOS_WarpMouse;
// mouse->WarpMouseGlobal = RISCOS_WarpMouseGlobal;
// mouse->SetRelativeMouseMode = RISCOS_SetRelativeMouseMode;
// mouse->CaptureMouse = RISCOS_CaptureMouse;
// mouse->GetGlobalMouseState = RISCOS_GetGlobalMouseState;
SDL_SetDefaultCursor(RISCOS_CreateDefaultCursor());
return true;
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifndef SDL_riscosmouse_h_
#define SDL_riscosmouse_h_
extern bool RISCOS_InitMouse(SDL_VideoDevice *_this);
#endif // SDL_riscosmouse_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_keyboard_c.h"
#include "../../events/SDL_mouse_c.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscosevents_c.h"
#include "SDL_riscosframebuffer_c.h"
#include "SDL_riscosmouse.h"
#include "SDL_riscosmodes.h"
#include "SDL_riscoswindow.h"
#include "SDL_riscosmessagebox.h"
#define RISCOSVID_DRIVER_NAME "riscos"
// Initialization/Query functions
static bool RISCOS_VideoInit(SDL_VideoDevice *_this);
static void RISCOS_VideoQuit(SDL_VideoDevice *_this);
// RISC OS driver bootstrap functions
static void RISCOS_DeleteDevice(SDL_VideoDevice *device)
{
SDL_free(device->internal);
SDL_free(device);
}
static SDL_VideoDevice *RISCOS_CreateDevice(void)
{
SDL_VideoDevice *device;
SDL_VideoData *data;
// Initialize all variables that we clean on shutdown
device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
if (!device) {
return NULL;
}
// Initialize internal data
data = (SDL_VideoData *)SDL_calloc(1, sizeof(SDL_VideoData));
if (!data) {
SDL_free(device);
return NULL;
}
device->internal = data;
// Set the function pointers
device->VideoInit = RISCOS_VideoInit;
device->VideoQuit = RISCOS_VideoQuit;
device->PumpEvents = RISCOS_PumpEvents;
device->GetDisplayModes = RISCOS_GetDisplayModes;
device->SetDisplayMode = RISCOS_SetDisplayMode;
device->CreateSDLWindow = RISCOS_CreateWindow;
device->DestroyWindow = RISCOS_DestroyWindow;
device->CreateWindowFramebuffer = RISCOS_CreateWindowFramebuffer;
device->UpdateWindowFramebuffer = RISCOS_UpdateWindowFramebuffer;
device->DestroyWindowFramebuffer = RISCOS_DestroyWindowFramebuffer;
device->free = RISCOS_DeleteDevice;
// TODO: Support windowed mode
device->device_caps = VIDEO_DEVICE_CAPS_FULLSCREEN_ONLY;
return device;
}
VideoBootStrap RISCOS_bootstrap = {
RISCOSVID_DRIVER_NAME, "SDL RISC OS video driver",
RISCOS_CreateDevice,
RISCOS_ShowMessageBox,
false
};
static bool RISCOS_VideoInit(SDL_VideoDevice *_this)
{
if (!RISCOS_InitEvents(_this)) {
return false;
}
if (!RISCOS_InitMouse(_this)) {
return false;
}
// Assume we have a mouse and keyboard
SDL_AddKeyboard(SDL_DEFAULT_KEYBOARD_ID, NULL, false);
SDL_AddMouse(SDL_DEFAULT_MOUSE_ID, NULL, false);
if (!RISCOS_InitModes(_this)) {
return false;
}
// We're done!
return true;
}
static void RISCOS_VideoQuit(SDL_VideoDevice *_this)
{
RISCOS_QuitEvents(_this);
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifndef SDL_riscosvideo_h_
#define SDL_riscosvideo_h_
#include "../SDL_sysvideo.h"
#define RISCOS_MAX_KEYS_PRESSED 6
struct SDL_VideoData
{
int last_mouse_buttons;
Uint8 key_pressed[RISCOS_MAX_KEYS_PRESSED];
};
#endif // SDL_riscosvideo_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifdef SDL_VIDEO_DRIVER_RISCOS
#include "../SDL_sysvideo.h"
#include "../../events/SDL_mouse_c.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscoswindow.h"
bool RISCOS_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props)
{
SDL_WindowData *data;
data = (SDL_WindowData *)SDL_calloc(1, sizeof(*data));
if (!data) {
return false;
}
data->window = window;
SDL_SetMouseFocus(window);
// All done!
window->internal = data;
return true;
}
void RISCOS_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window)
{
if (window->internal) {
SDL_free(window->internal);
window->internal = NULL;
}
}
#endif // SDL_VIDEO_DRIVER_RISCOS
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_internal.h"
#ifndef SDL_riscoswindow_h_
#define SDL_riscoswindow_h_
#include "SDL_riscosdefs.h"
struct SDL_WindowData
{
SDL_Window *window;
sprite_area *fb_area;
sprite_header *fb_sprite;
};
extern bool RISCOS_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props);
extern void RISCOS_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window);
#endif // SDL_riscoswindow_h_
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* RISC OS key code to SDL_Keycode mapping table
Sources:
- https://www.riscosopen.org/wiki/documentation/show/Keyboard Scan Codes
*/
/* *INDENT-OFF* */ // clang-format off
static SDL_Scancode const riscos_scancode_table[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN, // Shift
/* 1 */ SDL_SCANCODE_UNKNOWN, // Ctrl
/* 2 */ SDL_SCANCODE_UNKNOWN, // Alt
/* 3 */ SDL_SCANCODE_LSHIFT,
/* 4 */ SDL_SCANCODE_LCTRL,
/* 5 */ SDL_SCANCODE_LALT,
/* 6 */ SDL_SCANCODE_RSHIFT,
/* 7 */ SDL_SCANCODE_RCTRL,
/* 8 */ SDL_SCANCODE_RALT,
/* 9 */ SDL_SCANCODE_UNKNOWN, // Left mouse
/* 10 */ SDL_SCANCODE_UNKNOWN, // Center mouse
/* 11 */ SDL_SCANCODE_UNKNOWN, // Right mouse
/* 12 */ SDL_SCANCODE_UNKNOWN,
/* 13 */ SDL_SCANCODE_UNKNOWN,
/* 14 */ SDL_SCANCODE_UNKNOWN,
/* 15 */ SDL_SCANCODE_UNKNOWN,
/* 16 */ SDL_SCANCODE_Q,
/* 17 */ SDL_SCANCODE_3,
/* 18 */ SDL_SCANCODE_4,
/* 19 */ SDL_SCANCODE_5,
/* 20 */ SDL_SCANCODE_F4,
/* 21 */ SDL_SCANCODE_8,
/* 22 */ SDL_SCANCODE_F7,
/* 23 */ SDL_SCANCODE_MINUS,
/* 24 */ SDL_SCANCODE_6, // Duplicate of 52
/* 25 */ SDL_SCANCODE_LEFT,
/* 26 */ SDL_SCANCODE_KP_6,
/* 27 */ SDL_SCANCODE_KP_7,
/* 28 */ SDL_SCANCODE_F11,
/* 29 */ SDL_SCANCODE_F12,
/* 30 */ SDL_SCANCODE_F10,
/* 31 */ SDL_SCANCODE_SCROLLLOCK,
/* 32 */ SDL_SCANCODE_PRINTSCREEN,
/* 33 */ SDL_SCANCODE_W,
/* 34 */ SDL_SCANCODE_E,
/* 35 */ SDL_SCANCODE_T,
/* 36 */ SDL_SCANCODE_7,
/* 37 */ SDL_SCANCODE_I,
/* 38 */ SDL_SCANCODE_9,
/* 39 */ SDL_SCANCODE_0,
/* 40 */ SDL_SCANCODE_MINUS, // Duplicate of 23
/* 41 */ SDL_SCANCODE_DOWN,
/* 42 */ SDL_SCANCODE_KP_8,
/* 43 */ SDL_SCANCODE_KP_9,
/* 44 */ SDL_SCANCODE_PAUSE,
/* 45 */ SDL_SCANCODE_GRAVE,
/* 46 */ SDL_SCANCODE_CURRENCYUNIT,
/* 47 */ SDL_SCANCODE_BACKSPACE,
/* 48 */ SDL_SCANCODE_1,
/* 49 */ SDL_SCANCODE_2,
/* 50 */ SDL_SCANCODE_D,
/* 51 */ SDL_SCANCODE_R,
/* 52 */ SDL_SCANCODE_6,
/* 53 */ SDL_SCANCODE_U,
/* 54 */ SDL_SCANCODE_O,
/* 55 */ SDL_SCANCODE_P,
/* 56 */ SDL_SCANCODE_LEFTBRACKET,
/* 57 */ SDL_SCANCODE_UP,
/* 58 */ SDL_SCANCODE_KP_PLUS,
/* 59 */ SDL_SCANCODE_KP_MINUS,
/* 60 */ SDL_SCANCODE_KP_ENTER,
/* 61 */ SDL_SCANCODE_INSERT,
/* 62 */ SDL_SCANCODE_HOME,
/* 63 */ SDL_SCANCODE_PAGEUP,
/* 64 */ SDL_SCANCODE_CAPSLOCK,
/* 65 */ SDL_SCANCODE_A,
/* 66 */ SDL_SCANCODE_X,
/* 67 */ SDL_SCANCODE_F,
/* 68 */ SDL_SCANCODE_Y,
/* 69 */ SDL_SCANCODE_J,
/* 70 */ SDL_SCANCODE_K,
/* 71 */ SDL_SCANCODE_2, // Duplicate of 49
/* 72 */ SDL_SCANCODE_SEMICOLON, // Duplicate of 87
/* 73 */ SDL_SCANCODE_RETURN,
/* 74 */ SDL_SCANCODE_KP_DIVIDE,
/* 75 */ SDL_SCANCODE_UNKNOWN,
/* 76 */ SDL_SCANCODE_KP_PERIOD,
/* 77 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 78 */ SDL_SCANCODE_PAGEDOWN,
/* 79 */ SDL_SCANCODE_APOSTROPHE,
/* 80 */ SDL_SCANCODE_UNKNOWN,
/* 81 */ SDL_SCANCODE_S,
/* 82 */ SDL_SCANCODE_C,
/* 83 */ SDL_SCANCODE_G,
/* 84 */ SDL_SCANCODE_H,
/* 85 */ SDL_SCANCODE_N,
/* 86 */ SDL_SCANCODE_L,
/* 87 */ SDL_SCANCODE_SEMICOLON,
/* 88 */ SDL_SCANCODE_RIGHTBRACKET,
/* 89 */ SDL_SCANCODE_DELETE,
/* 90 */ SDL_SCANCODE_KP_HASH,
/* 91 */ SDL_SCANCODE_KP_MULTIPLY,
/* 92 */ SDL_SCANCODE_UNKNOWN,
/* 93 */ SDL_SCANCODE_EQUALS,
/* 94 */ SDL_SCANCODE_NONUSBACKSLASH,
/* 95 */ SDL_SCANCODE_UNKNOWN,
/* 96 */ SDL_SCANCODE_TAB,
/* 97 */ SDL_SCANCODE_Z,
/* 98 */ SDL_SCANCODE_SPACE,
/* 99 */ SDL_SCANCODE_V,
/* 100 */ SDL_SCANCODE_B,
/* 101 */ SDL_SCANCODE_M,
/* 102 */ SDL_SCANCODE_COMMA,
/* 103 */ SDL_SCANCODE_PERIOD,
/* 104 */ SDL_SCANCODE_SLASH,
/* 105 */ SDL_SCANCODE_END,
/* 106 */ SDL_SCANCODE_KP_0,
/* 107 */ SDL_SCANCODE_KP_1,
/* 108 */ SDL_SCANCODE_KP_3,
/* 109 */ SDL_SCANCODE_UNKNOWN,
/* 110 */ SDL_SCANCODE_UNKNOWN,
/* 111 */ SDL_SCANCODE_UNKNOWN,
/* 112 */ SDL_SCANCODE_ESCAPE,
/* 113 */ SDL_SCANCODE_F1,
/* 114 */ SDL_SCANCODE_F2,
/* 115 */ SDL_SCANCODE_F3,
/* 116 */ SDL_SCANCODE_F5,
/* 117 */ SDL_SCANCODE_F6,
/* 118 */ SDL_SCANCODE_F8,
/* 119 */ SDL_SCANCODE_F9,
/* 120 */ SDL_SCANCODE_BACKSLASH,
/* 121 */ SDL_SCANCODE_RIGHT,
/* 122 */ SDL_SCANCODE_KP_4,
/* 123 */ SDL_SCANCODE_KP_5,
/* 124 */ SDL_SCANCODE_KP_2,
/* 125 */ SDL_SCANCODE_LGUI,
/* 126 */ SDL_SCANCODE_RGUI,
/* 127 */ SDL_SCANCODE_MENU
};
/* *INDENT-ON* */ // clang-format on