OpenTTD
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Base for all 32bpp blitters. More...
#include <32bpp_base.hpp>
Public Member Functions | |
uint8 | GetScreenDepth () |
Get the screen depth this blitter works for. | |
void * | MoveTo (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 (const Palette &palette) |
Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'first_dirty' to 'first_dirty + count_dirty'. | |
Blitter::PaletteAnimation | UsePaletteAnimation () |
Check if the blitter uses palette animation at all. | |
int | GetBytesPerPixel () |
Get how many bytes are needed to store a pixel. | |
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virtual void | Draw (Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)=0 |
Draw an image to the screen, given an amount of params defined above. | |
virtual void | DrawColourMappingRect (void *dst, int width, int height, PaletteID pal)=0 |
Draw a colourtable to the screen. | |
virtual Sprite * | Encode (const SpriteLoader::Sprite *sprite, AllocatorProc *allocator)=0 |
Convert a sprite from the loader to our own format. | |
virtual void | DrawLine (void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash=0) |
Draw a line with a given colour. | |
virtual const char * | GetName ()=0 |
Get the name of the blitter, the same as the Factory-instance returns. | |
virtual void | PostResize () |
Post resize event. |
Static Public Member Functions | |
static Colour | LookupColourInPalette (uint index) |
Look up the colour in the current palette. | |
static Colour | ComposeColourRGBANoCheck (uint r, uint g, uint b, uint a, Colour current) |
Compose a colour based on RGBA values and the current pixel value. | |
static Colour | ComposeColourRGBA (uint r, uint g, uint b, uint a, Colour current) |
Compose a colour based on RGBA values and the current pixel value. | |
static Colour | ComposeColourPANoCheck (Colour colour, uint a, Colour current) |
Compose a colour based on Pixel value, alpha value, and the current pixel value. | |
static Colour | ComposeColourPA (Colour colour, uint a, Colour current) |
Compose a colour based on Pixel value, alpha value, and the current pixel value. | |
static Colour | MakeTransparent (Colour colour, uint nom, uint denom=256) |
Make a pixel looks like it is transparent. | |
static uint8 | MakeDark (uint8 r, uint8 g, uint8 b) |
Make a colour dark grey, for specialized 32bpp remapping. | |
static Colour | MakeGrey (Colour colour) |
Make a colour grey - based. | |
static Colour | AdjustBrightness (Colour colour, uint8 brightness) |
Static Public Attributes | |
static const int | DEFAULT_BRIGHTNESS = 128 |
Additional Inherited Members | |
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enum | PaletteAnimation { PALETTE_ANIMATION_NONE, PALETTE_ANIMATION_VIDEO_BACKEND, PALETTE_ANIMATION_BLITTER } |
Types of palette animation. More... |
Base for all 32bpp blitters.
Definition at line 21 of file 32bpp_base.hpp.
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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.
Reimplemented in Blitter_32bppAnim.
Definition at line 136 of file 32bpp_base.cpp.
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inlinestatic |
Compose a colour based on Pixel value, alpha value, and the current pixel value.
Handles fully transparent and solid pixels in a special (faster) way.
Definition at line 88 of file 32bpp_base.hpp.
References Colour::a, and ComposeColourPANoCheck().
Referenced by Blitter_32bppSimple::Draw().
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inlinestatic |
Compose a colour based on RGBA values and the current pixel value.
Handles fully transparent and solid pixels in a special (faster) way.
Definition at line 64 of file 32bpp_base.hpp.
References ComposeColourRGBANoCheck().
Referenced by Blitter_32bppSimple::Draw(), Blitter_32bppOptimized::Draw(), and Blitter_32bppAnim::Draw().
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virtual |
Copy from a buffer to the screen.
video | The destination 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.
Reimplemented in Blitter_32bppAnim.
Definition at line 41 of file 32bpp_base.cpp.
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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 65 of file 32bpp_base.cpp.
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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.
Reimplemented in Blitter_32bppAnim.
Definition at line 53 of file 32bpp_base.cpp.
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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.
Reimplemented in Blitter_32bppAnim.
Definition at line 27 of file 32bpp_base.cpp.
References LookupColourInPalette().
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inlinevirtual |
Get the screen depth this blitter works for.
This is either: 8, 16, 24 or 32.
Implements Blitter.
Definition at line 23 of file 32bpp_base.hpp.
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inlinestatic |
Make a colour dark grey, for specialized 32bpp remapping.
r | red component |
g | green component |
b | blue component |
Definition at line 122 of file 32bpp_base.hpp.
Referenced by Blitter_32bppSimple::Draw(), Blitter_32bppOptimized::Draw(), and Blitter_32bppAnim::Draw().
Make a colour grey - based.
colour | the colour to make grey. |
Definition at line 133 of file 32bpp_base.hpp.
Referenced by Blitter_32bppSimple::DrawColourMappingRect(), and Blitter_32bppAnim::DrawColourMappingRect().
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inlinestatic |
Make a pixel looks like it is transparent.
colour | the colour already on the screen. |
nom | the amount of transparency, nominator, makes colour lighter. |
denom | denominator, makes colour darker. |
Definition at line 106 of file 32bpp_base.hpp.
Referenced by Blitter_32bppSimple::Draw(), Blitter_32bppOptimized::Draw(), Blitter_32bppAnim::Draw(), Blitter_32bppSimple::DrawColourMappingRect(), and Blitter_32bppAnim::DrawColourMappingRect().
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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 17 of file 32bpp_base.cpp.
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Called when the 8bpp palette is changed; you should redraw all pixels on the screen that are equal to the 8bpp palette indexes 'first_dirty' to 'first_dirty + count_dirty'.
palette | The new palette. |
Implements Blitter.
Reimplemented in Blitter_32bppAnim.
Definition at line 141 of file 32bpp_base.cpp.
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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.
Reimplemented in Blitter_32bppAnim.
Definition at line 77 of file 32bpp_base.cpp.
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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.
Reimplemented in Blitter_32bppAnim.
Definition at line 22 of file 32bpp_base.cpp.
References LookupColourInPalette().
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virtual |
Check if the blitter uses palette animation at all.
Implements Blitter.
Reimplemented in Blitter_32bppAnim.
Definition at line 146 of file 32bpp_base.cpp.
References Blitter::PALETTE_ANIMATION_NONE.