#include <paletteman.h>
Public Member Functions | |
virtual void | setPalette (const byte *colors, uint start, uint num)=0 |
void | setPalette (const Graphics::Palette &pal, uint start=0) |
virtual void | grabPalette (byte *colors, uint start, uint num) const =0 |
Graphics::Palette | grabPalette (uint start, uint num) |
The PaletteManager is part of the OSystem backend API and responsible for handling the (possibly emulated) "hardware" palette needed for many old games (e.g. in EGA and VGA mode).
By itself it is a pure abstract class, i.e. an "interface"; you can use the OSystem::getPaletteManager() method to obtain an instance that you can use to perform actual palette modifications.
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pure virtual |
Replace the specified range of the palette with new colors. The palette entries from 'start' till (start+num-1) will be replaced - so a full palette update is accomplished via start=0, num=256.
The palette data is specified in interleaved RGB format. That is, the first byte of the memory block 'colors' points at is the red component of the first new color; the second byte the green component of the first new color; the third byte the blue component, the last byte to the alpha (transparency) value. Then the second color starts, and so on. So memory looks like this: R1-G1-B1-R2-G2-B2-R3-...
colors | the new palette data, in interleaved RGB format |
start | the first palette entry to be updated |
num | the number of palette entries to be updated |
Implemented in OSystem_Wii, OSystem_N64, N3DS::OSystem_3DS, OpenGL::OpenGLGraphicsManager, LibretroGraphics, OSystem_DS, OSystem_Dreamcast, AndroidGraphics3dManager, OSystem_PSP, SurfaceSdlGraphicsManager, GraphicsManager, AtariGraphicsManager, NullGraphicsManager, and DefaultPaletteManager.
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pure virtual |
Grabs a specified part of the currently active palette. The format is the same as for setPalette.
This should return exactly the same RGB data as was setup via previous setPalette calls.
For example, for every valid value of start and num of the following code:
byte origPal[num*3]; // Setup origPal's data however you like g_system->setPalette(origPal, start, num); byte obtainedPal[num*3]; g_system->grabPalette(obtainedPal, start, num);
the following should be true:
memcmp(origPal, obtainedPal, num*3) == 0
colors | the palette data, in interleaved RGB format |
start | the first platte entry to be read |
num | the number of palette entries to be read |
Implemented in OSystem_Wii, OSystem_N64, N3DS::OSystem_3DS, OpenGL::OpenGLGraphicsManager, LibretroGraphics, OSystem_DS, OSystem_Dreamcast, AndroidGraphics3dManager, OSystem_PSP, SurfaceSdlGraphicsManager, GraphicsManager, AtariGraphicsManager, NullGraphicsManager, and DefaultPaletteManager.