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- /*-----------------------------------------------------------------------
- ; MODULE XCLIPPBM
- ;
- ; This module was written by Matthew MacKenzie
- ; matm@eng.umd.edu
- ;
- ; Clipped transfer of planar bitmaps from system memory to video memory.
- ;
- ; Compile with TASM.
- ; C near-callable.
- ;
- ; ****** XLIB - Mode X graphics library ****************
- ; ****** ****************
- ; ****** Written By Themie Gouthas ****************
- ;
- ; Terminology & notes:
- ; VRAM == Video RAM
- ; SRAM == System RAM
- ; X coordinates are in pixels unless explicitly stated
- ;
- ;----------------------------------------------------------------------*/
-
- #ifndef _XCLIPPBM_H_
- #define _XCLIPPBM_H_
-
- /* unlike most global variables in Xlib, these are meant to be written to;
- in fact they start off uninitialized -- all values are in pixels */
- extern int TopBound;
- extern int BottomBound;
- extern int LeftBound;
- extern int RightBound;
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
-
- /* for both functions, a return value of 1 indicates that the entire
- bitmap was outside the bounding box, while a value of 0 means that
- something may have ended up on the screen */
-
- /* copies a planar bitmap from SRAM to VRAM, with clipping */
-
- int x_clip_pbm (int X, int Y, int ScreenOffs, char far * Bitmap);
-
- /* copies a planar bitmap from SRAM to VRAM, with clipping -- 0 bytes
- in the bitmap are not copied */
-
- int x_clip_masked_pbm (int X, int Y, int ScreenOffs, char far * Bitmap);
-
- #ifdef __cplusplus
- }
- #endif
-
-
- #endif
-