Base for all 8bpp blitters. More...
#include <8bpp_base.hpp>
Public Member Functions | |
uint8 | GetScreenDepth () |
Get the screen depth this blitter works for. | |
void | DrawColourMappingRect (void *dst, int width, int height, PaletteID pal) |
Draw a colourtable to the screen. | |
void * | MoveTo (const void *video, int x, int y) |
Move the destination pointer the requested amount x and y, keeping in mind any pitch and bpp of the renderer. | |
void | SetPixel (void *video, int x, int y, uint8 colour) |
Draw a pixel with a given colour on the video-buffer. | |
void | DrawRect (void *video, int width, int height, uint8 colour) |
Make a single horizontal line in a single colour on the video-buffer. | |
void | CopyFromBuffer (void *video, const void *src, int width, int height) |
Copy from a buffer to the screen. | |
void | CopyToBuffer (const void *video, void *dst, int width, int height) |
Copy from the screen to a buffer. | |
void | CopyImageToBuffer (const void *video, void *dst, int width, int height, int dst_pitch) |
Copy from the screen to a buffer in a palette format for 8bpp and RGBA format for 32bpp. | |
void | ScrollBuffer (void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) |
Scroll the videobuffer some 'x' and 'y' value. | |
int | BufferSize (int width, int height) |
Calculate how much memory there is needed for an image of this size in the video-buffer. | |
void | PaletteAnimate (uint start, uint count) |
Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'start' to 'start + count'. | |
Blitter::PaletteAnimation | UsePaletteAnimation () |
Check if the blitter uses palette animation at all. | |
int | GetBytesPerPixel () |
Get how many bytes are needed to store a pixel. |
Base for all 8bpp blitters.
Definition at line 18 of file 8bpp_base.hpp.
int Blitter_8bppBase::BufferSize | ( | int | width, | |
int | height | |||
) | [virtual] |
Calculate how much memory there is needed for an image of this size in the video-buffer.
width | The width of the buffer-to-be. | |
height | The height of the buffer-to-be. |
Implements Blitter.
Definition at line 139 of file 8bpp_base.cpp.
void Blitter_8bppBase::CopyFromBuffer | ( | void * | video, | |
const void * | src, | |||
int | width, | |||
int | height | |||
) | [virtual] |
Copy from a buffer to the screen.
video | The destionation pointer (video-buffer). | |
src | The buffer from which the data will be read. | |
width | The width of the buffer. | |
height | The height of the buffer. |
Implements Blitter.
Definition at line 44 of file 8bpp_base.cpp.
void Blitter_8bppBase::CopyImageToBuffer | ( | const void * | video, | |
void * | dst, | |||
int | width, | |||
int | height, | |||
int | dst_pitch | |||
) | [virtual] |
Copy from the screen to a buffer in a palette format for 8bpp and RGBA format for 32bpp.
video | The destination pointer (video-buffer). | |
dst | The buffer in which the data will be stored. | |
width | The width of the buffer. | |
height | The height of the buffer. | |
dst_pitch | The pitch (byte per line) of the destination buffer. |
Implements Blitter.
Definition at line 68 of file 8bpp_base.cpp.
void Blitter_8bppBase::CopyToBuffer | ( | const void * | video, | |
void * | dst, | |||
int | width, | |||
int | height | |||
) | [virtual] |
Copy from the screen to a buffer.
video | The destination pointer (video-buffer). | |
dst | The buffer in which the data will be stored. | |
width | The width of the buffer. | |
height | The height of the buffer. |
Implements Blitter.
Definition at line 56 of file 8bpp_base.cpp.
void Blitter_8bppBase::DrawColourMappingRect | ( | void * | dst, | |
int | width, | |||
int | height, | |||
PaletteID | pal | |||
) | [virtual] |
Draw a colourtable to the screen.
This is: the colour of the screen is read and is looked-up in the palette to match a new colour, which then is put on the screen again.
dst | the destination pointer (video-buffer). | |
width | the width of the buffer. | |
height | the height of the buffer. | |
pal | the palette to use. |
Implements Blitter.
Definition at line 16 of file 8bpp_base.cpp.
References ST_RECOLOUR.
void Blitter_8bppBase::DrawRect | ( | void * | video, | |
int | width, | |||
int | height, | |||
uint8 | colour | |||
) | [virtual] |
Make a single horizontal line in a single colour on the video-buffer.
video | The destination pointer (video-buffer). | |
width | The length of the line. | |
height | The height of the line. | |
colour | A 8bpp mapping colour. |
Implements Blitter.
Definition at line 36 of file 8bpp_base.cpp.
uint8 Blitter_8bppBase::GetScreenDepth | ( | ) | [inline, virtual] |
Get the screen depth this blitter works for.
This is either: 8, 16, 24 or 32.
Implements Blitter.
Definition at line 20 of file 8bpp_base.hpp.
void * Blitter_8bppBase::MoveTo | ( | const void * | video, | |
int | x, | |||
int | y | |||
) | [virtual] |
Move the destination pointer the requested amount x and y, keeping in mind any pitch and bpp of the renderer.
video | The destination pointer (video-buffer) to scroll. | |
x | How much you want to scroll to the right. | |
y | How much you want to scroll to the bottom. |
Implements Blitter.
Definition at line 26 of file 8bpp_base.cpp.
void Blitter_8bppBase::PaletteAnimate | ( | uint | start, | |
uint | count | |||
) | [virtual] |
Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'start' to 'start + count'.
start | The start index in the 8bpp palette. | |
count | The amount of indexes that are (possible) changed. |
Implements Blitter.
Definition at line 144 of file 8bpp_base.cpp.
void Blitter_8bppBase::ScrollBuffer | ( | void * | video, | |
int & | left, | |||
int & | top, | |||
int & | width, | |||
int & | height, | |||
int | scroll_x, | |||
int | scroll_y | |||
) | [virtual] |
Scroll the videobuffer some 'x' and 'y' value.
video | The buffer to scroll into. | |
left | The left value of the screen to scroll. | |
top | The top value of the screen to scroll. | |
width | The width of the screen to scroll. | |
height | The height of the screen to scroll. | |
scroll_x | How much to scroll in X. | |
scroll_y | How much to scroll in Y. |
Implements Blitter.
Definition at line 80 of file 8bpp_base.cpp.
void Blitter_8bppBase::SetPixel | ( | void * | video, | |
int | x, | |||
int | y, | |||
uint8 | colour | |||
) | [virtual] |
Draw a pixel with a given colour on the video-buffer.
video | The destination pointer (video-buffer). | |
x | The x position within video-buffer. | |
y | The y position within video-buffer. | |
colour | A 8bpp mapping colour. |
Implements Blitter.
Definition at line 31 of file 8bpp_base.cpp.
Blitter::PaletteAnimation Blitter_8bppBase::UsePaletteAnimation | ( | ) | [virtual] |
Check if the blitter uses palette animation at all.
Implements Blitter.
Definition at line 149 of file 8bpp_base.cpp.