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| | == graphics.library structures == | | == graphics.library structures == |
| − | __TOC__
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| | | | |
| − | ===ColorMap===
| + | [[ColorMap]] |
| | | | |
| − | This structure is the primary storage for palette data.
| + | [[DimensionInfo]] |
| | | | |
| − | Color data itself is stored in two tables: ColorTable and LowColorBits. These fields are actually pointer to arrays of UWORDs. Each UWORD corresponds to one color.
| + | [[DisplayInfo]] |
| − | Number of UWORDs in these array is equal to Count value in this structure.
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| − | ColorTable stores upper nibbles of RGB values, LowColorBits stores low nibbles.
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| | | | |
| − | Example:<br/>
| + | [[DisplayInfoHandle]] |
| − | color number 4, value: 0x00ABCDEF<br/>
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| − | ColorTable [4] = 0x0ACE,<br/>
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| − | LowColorBits[4] = 0x0BDF<br/>
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| | | | |
| − | When setting a ColorTable entry upper nibble is kept unchanged instead of just zeroing it out. This means that this nibble is used for something by Amiga
| + | [[MonitorInfo]] |
| − | chipset (perhaps alpha value for genlock?)
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| | | | |
| − | SpriteBase fields keep bank number, not a color number. On m68k Amiga colors are divided into
| + | [[MonitorSpec]] |
| − | banks, 16 per each. So bank number is color number divided by 16. Base color is a number which
| |
| − | is added to all colors of the sprite in order to look up the actual palette entry.
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| | | | |
| − | <pre>
| + | [[NameInto]] |
| − | struct ColorMap
| |
| − | {
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| − | UBYTE Flags; /* see below */
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| − | UBYTE Type; /* Colormap type (reflects version), see below */
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| − | UWORD Count; /* Number of palette entries */
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| − | APTR ColorTable; /* Table of high nibbles of color values */
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| | | | |
| − | /* The following fields are present only if Type >= COLORMAP_TYPE_V36 */
| + | [[SpecialMonitor]] |
| − | struct ViewPortExtra * cm_vpe; /* ViewPortExtra, for faster access */
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| − | | |
| − | APTR LowColorBits; /* Table of low nibbles of color values */
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| − | UBYTE TransparencyPlane;
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| − | UBYTE SpriteResolution; /* see below */
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| − | UBYTE SpriteResDefault;
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| − | UBYTE AuxFlags;
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| − | | |
| − | struct ViewPort * cm_vp; /* Points back to a ViewPort this colormap belongs to */
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| − | | |
| − | APTR NormalDisplayInfo;
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| − | APTR CoerceDisplayInfo;
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| − | | |
| − | struct TagItem * cm_batch_items;
| |
| − | ULONG VPModeID;
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| − | struct PaletteExtra * PalExtra; /* Structure controlling palette sharing */
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| − | | |
| − | UWORD SpriteBase_Even; /* Color bank for even sprites (see above) */
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| − | UWORD SpriteBase_Odd; /* The same for odd sprites */
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| − | UWORD Bp_0_base;
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| − | UWORD Bp_1_base;
| |
| − | };
| |
| − | | |
| − | /* Flags */
| |
| − | #define CMF_CMTRANS 0
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| − | #define COLORMAP_TRANSPARENCY (1<<0)
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| − | #define CMF_CPTRANS 1
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| − | #define COLORPLANE_TRANSPARENCY (1<<1)
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| − | #define CMF_BRDRBLNK 2
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| − | #define BORDER_BLANKING (1<<2)
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| − | #define CMF_BRDNTRAN 3
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| − | #define BORDER_NOTRANSPARENCY (1<<3)
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| − | #define VIDEOCONTROL_BATCH (1<<4)
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| − | #define USER_COPPER_CLIP (1<<5)
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| − | #define CMF_BRDRSPRT 6
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| − | #define BORDERSPRITES (1<<6)
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| − | | |
| − | /* Type */
| |
| − | #define COLORMAP_TYPE_V1_2 0
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| − | #define COLORMAP_TYPE_V36 1
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| − | #define COLORMAP_TYPE_V39 2
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| − | | |
| − | /* SpriteResolution */
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| − | #define SPRITERESN_ECS 0x00
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| − | #define SPRITERESN_140NS 0x01
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| − | #define SPRITERESN_70NS 0x02
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| − | #define SPRITERESN_35NS 0x03
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| − | #define SPRITERESN_DEFAULT 0xFF
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| − | </pre>
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| | | | |
| | [[category:graphics.library]] | | [[category:graphics.library]] |
