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Diffstat (limited to 'distrib/sdl-1.2.12/src/video/riscos/SDL_riscossprite.c')
-rw-r--r--distrib/sdl-1.2.12/src/video/riscos/SDL_riscossprite.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/distrib/sdl-1.2.12/src/video/riscos/SDL_riscossprite.c b/distrib/sdl-1.2.12/src/video/riscos/SDL_riscossprite.c
deleted file mode 100644
index 0f267ff..0000000
--- a/distrib/sdl-1.2.12/src/video/riscos/SDL_riscossprite.c
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2004 Sam Lantinga
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- Sam Lantinga
- slouken@libsdl.org
-*/
-#include "SDL_config.h"
-
-/*
- File added by Alan Buckley (alan_baa@hotmail.com) for RISC OS compatability
- 27 March 2003
-
- Implements Sprite plotting code for wimp display.window
-*/
-
-#include "kernel.h"
-#include "swis.h"
-
-#include "SDL_stdinc.h"
-#include "SDL_riscosvideo.h"
-
-extern void WIMP_ReadModeInfo(_THIS);
-
-void WIMP_PaletteChanged(_THIS);
-
-
-/* Create sprite buffer for screen */
-
-unsigned char *WIMP_CreateBuffer(int width, int height, int bpp)
-{
- int size;
- char sprite_name[12] = "display";
- unsigned char *buffer;
- _kernel_swi_regs regs;
- int bytesPerPixel;
- int bytesPerRow;
- int offsetToSpriteData = 60;
-
- switch(bpp)
- {
- case 32: bytesPerPixel = 4; break;
- case 16: bytesPerPixel = 2; break;
- case 8:
- bytesPerPixel = 1;
- offsetToSpriteData += 2048; /* Add in size of palette */
- break;
- default:
- return NULL;
- break;
- }
-
- bytesPerRow = bytesPerPixel * width;
-
- if ((bytesPerRow & 3) != 0)
- {
- bytesPerRow += 4 - (bytesPerRow & 3);
- }
- size = bytesPerRow * height;
-
- buffer = SDL_malloc( (size_t) size + offsetToSpriteData );
- if (!buffer) return NULL;
-
- /* Initialise a sprite area */
-
- *(unsigned int *)buffer = size + offsetToSpriteData;
- *(unsigned int *)(buffer + 8) = 16;
-
- regs.r[0] = 256+9;
- regs.r[1] = (unsigned int)buffer;
- _kernel_swi(OS_SpriteOp, &regs, &regs);
-
- regs.r[0] = 256+15;
- regs.r[1] = (unsigned int)buffer;
- regs.r[2] = (unsigned int)&sprite_name;
- regs.r[3] = 0; /* Palette flag: 0 = no palette */
- regs.r[4] = width;
- regs.r[5] = height;
- if (bpp == 8)
- {
- /* Use old style mode number */
- regs.r[6] = 28; /* 8bpp 90x90dpi */
- } else
- {
- regs.r[6] = (((bpp == 16) ? 5 : 6) << 27) /* Type 6 = 32bpp sprite, 5 = 16bpp sprite */
- | (90 << 14) /* Vertical dpi */
- | (90 << 1) /* Horizontal dpi */
- | 1; /* Marker to distinguish between mode selectors and sprite modes */
- }
- if (_kernel_swi(OS_SpriteOp, &regs, &regs) == NULL)
- {
- if (bpp == 8)
- {
- /* Modify sprite to take into account 256 colour palette */
- int *sprite = (int *)(buffer + 16);
- /* Adjust sprite offsets */
- sprite[0] += 2048;
- sprite[8] += 2048;
- sprite[9] += 2048;
- /* Adjust sprite area next free pointer */
- (*(int *)(buffer+12)) += 2048;
-
- /* Don't need to set up palette as SDL sets up the default
- 256 colour palette */
-/* {
- int *pal = sprite + 11;
- unsigned int j;
- unsigned int entry;
- for (j = 0; j < 255; j++)
- {
- entry = (j << 24) | (j << 16) | (j << 8);
- *pal++ = entry;
- *pal++ = entry;
- }
- }
-*/
- }
- } else
- {
- SDL_free(buffer);
- buffer = NULL;
- }
-
- return buffer;
-}
-
-
-/* Setup translation buffers for the sprite plotting */
-
-void WIMP_SetupPlotInfo(_THIS)
-{
- _kernel_swi_regs regs;
- int *sprite = ((int *)this->hidden->bank[1])+4;
-
- regs.r[0] = (unsigned int)this->hidden->bank[1];
- regs.r[1] = (unsigned int)sprite;
- regs.r[2] = -1; /* Current mode */
- regs.r[3] = -1; /* Current palette */
- regs.r[4] = 0; /* Get size of buffer */
- regs.r[5] = 1|2|16; /* R1 - pointer to sprite and can use full palette words */
- regs.r[6] = 0;
- regs.r[7] = 0;
-
- if (this->hidden->pixtrans) SDL_free(this->hidden->pixtrans);
- this->hidden->pixtrans = 0;
-
- /* Get the size required for the buffer */
- _kernel_swi(ColourTrans_GenerateTable, &regs, &regs);
- if (regs.r[4])
- {
- this->hidden->pixtrans = SDL_malloc(regs.r[4]);
-
- regs.r[4] = (unsigned int)this->hidden->pixtrans;
- /* Actually read the buffer */
- _kernel_swi(ColourTrans_GenerateTable, &regs, &regs);
- }
-}
-
-/* Plot the sprite in the given context */
-void WIMP_PlotSprite(_THIS, int x, int y)
-{
- _kernel_swi_regs regs;
- _kernel_oserror *err;
-
- regs.r[0] = 52 + 512;
- regs.r[1] = (unsigned int)this->hidden->bank[1];
- regs.r[2] = (unsigned int)this->hidden->bank[1]+16;
- regs.r[3] = x;
- regs.r[4] = y;
- regs.r[5] = 0|32; /* Overwrite screen and pixtrans contains wide colour entries */
- regs.r[6] = 0; /* No scale factors i.e. 1:1 */
- regs.r[7] = (int)this->hidden->pixtrans;
-
- if ((err = _kernel_swi(OS_SpriteOp, &regs, &regs)) != 0)
- {
- int *p = (int *)this->hidden->pixtrans;
- printf("OS_SpriteOp failed \n%s\n",err->errmess);
- printf("pixtrans %d\n", (int)this->hidden->pixtrans);
- printf("%x %x %x\n", p[0], p[1], p[2]);
- }
-}
-
-
-/* Wimp mode has changes so update colour mapping and pixel sizes
- of windows and the sprites they plot */
-
-void WIMP_ModeChanged(_THIS)
-{
- int oldXeig = this->hidden->xeig;
- int oldYeig = this->hidden->yeig;
-
- WIMP_ReadModeInfo(this);
-
- if (oldXeig == this->hidden->xeig && oldYeig == this->hidden->yeig)
- {
- /* Only need to update the palette */
- WIMP_PaletteChanged(this);
- } else
- {
- _kernel_swi_regs regs;
- int window_state[9];
- int extent[4];
- int currWidth, currHeight;
- int newWidth, newHeight;
-
- /* Need to resize windows and update the palette */
- WIMP_SetupPlotInfo(this);
-
-
- window_state[0] = this->hidden->window_handle;
- regs.r[1] = (unsigned int)window_state;
- _kernel_swi(Wimp_GetWindowState, &regs, &regs);
-
- currWidth = window_state[3] - window_state[1];
- currHeight = window_state[4] - window_state[2];
-
- newWidth = (currWidth >> oldXeig) << this->hidden->xeig;
- newHeight = (currHeight >> oldYeig) << this->hidden->yeig;
- /* Need to avoid extent getting too small for visible part
- of window */
- extent[0] = 0;
- if (currHeight <= newHeight)
- {
- extent[1] = -newHeight;
- } else
- {
- extent[1] = -currHeight;
- }
- if (currWidth <= newWidth)
- {
- extent[2] = newWidth;
- } else
- {
- extent[2] = currWidth;
- }
- extent[3] = 0;
-
- regs.r[0] = this->hidden->window_handle;
- regs.r[1] = (int)extent;
- _kernel_swi(Wimp_SetExtent, &regs, &regs);
-
- /*TODO: May need to set flag to resize window on next open */
- }
-}
-
-/* Palette has changed so update palettes used for windows sprites */
-
-void WIMP_PaletteChanged(_THIS)
-{
- WIMP_SetupPlotInfo(this);
-}
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