Mercurial > sdl-ios-xcode
diff src/video/riscos/SDL_riscossprite.c @ 1895:c121d94672cb
SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Mon, 10 Jul 2006 21:04:37 +0000 |
parents | d910939febfa |
children | 99210400e8b9 |
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--- a/src/video/riscos/SDL_riscossprite.c Thu Jul 06 18:01:37 2006 +0000 +++ b/src/video/riscos/SDL_riscossprite.c Mon Jul 10 21:04:37 2006 +0000 @@ -41,81 +41,81 @@ /* Create sprite buffer for screen */ -unsigned char *WIMP_CreateBuffer(int width, int height, int bpp) +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; + 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; - } + 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; + bytesPerRow = bytesPerPixel * width; - if ((bytesPerRow & 3) != 0) - { - bytesPerRow += 4 - (bytesPerRow & 3); - } - size = bytesPerRow * height; + 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 */ + buffer = SDL_malloc((size_t) size + offsetToSpriteData); + if (!buffer) + return NULL; - *(unsigned int *)buffer = size + offsetToSpriteData; - *(unsigned int *)(buffer + 8) = 16; + /* Initialise a sprite area */ - regs.r[0] = 256+9; - regs.r[1] = (unsigned int)buffer; - _kernel_swi(OS_SpriteOp, ®s, ®s); + *(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, ®s, ®s); - 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, ®s, ®s) == 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; + 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, ®s, ®s) == 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 */ + /* Don't need to set up palette as SDL sets up the default + 256 colour palette */ /* { int *pal = sprite + 11; unsigned int j; @@ -128,138 +128,136 @@ } } */ - } - } else - { - SDL_free(buffer); - buffer = NULL; - } + } + } else { + SDL_free(buffer); + buffer = NULL; + } - return buffer; + return buffer; } /* Setup translation buffers for the sprite plotting */ -void WIMP_SetupPlotInfo(_THIS) +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; + _kernel_swi_regs regs; + int *sprite = ((int *) this->hidden->bank[1]) + 4; - if (this->hidden->pixtrans) SDL_free(this->hidden->pixtrans); - this->hidden->pixtrans = 0; + 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; - /* Get the size required for the buffer */ - _kernel_swi(ColourTrans_GenerateTable, ®s, ®s); - 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, ®s, ®s); - } + if (this->hidden->pixtrans) + SDL_free(this->hidden->pixtrans); + this->hidden->pixtrans = 0; + + /* Get the size required for the buffer */ + _kernel_swi(ColourTrans_GenerateTable, ®s, ®s); + 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, ®s, ®s); + } } /* Plot the sprite in the given context */ -void WIMP_PlotSprite(_THIS, int x, int y) +void +WIMP_PlotSprite(_THIS, int x, int y) { - _kernel_swi_regs regs; - _kernel_oserror *err; + _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; + 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, ®s, ®s)) != 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]); - } + if ((err = _kernel_swi(OS_SpriteOp, ®s, ®s)) != 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) +void +WIMP_ModeChanged(_THIS) { - int oldXeig = this->hidden->xeig; - int oldYeig = this->hidden->yeig; + int oldXeig = this->hidden->xeig; + int oldYeig = this->hidden->yeig; - WIMP_ReadModeInfo(this); + 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); + 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, ®s, ®s); - - 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, ®s, ®s); + window_state[0] = this->hidden->window_handle; + regs.r[1] = (unsigned int) window_state; + _kernel_swi(Wimp_GetWindowState, ®s, ®s); + + currWidth = window_state[3] - window_state[1]; + currHeight = window_state[4] - window_state[2]; - /*TODO: May need to set flag to resize window on next open */ - } + 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, ®s, ®s); + + /*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) +void +WIMP_PaletteChanged(_THIS) { - WIMP_SetupPlotInfo(this); + WIMP_SetupPlotInfo(this); } + +/* vi: set ts=4 sw=4 expandtab: */