| 1 | #ifndef CR_DISPATCH_H
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| 2 | #define CR_DISPATCH_H
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| 3 |
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| 4 | #include "spu_dispatch_table.h"
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| 5 |
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| 6 | #include <iprt/cdefs.h>
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| 7 |
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| 8 | #ifdef __cplusplus
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| 9 | extern "C" {
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| 10 | #endif
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| 11 |
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| 12 | /**
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| 13 | * This structure offers a set of layers for controlling the
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| 14 | * dispatch table. The top layer is always the active layer,
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| 15 | * and controls the dispatch table. Utilities may push new
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| 16 | * layers onto the stack, or pop layers off, to control how
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| 17 | * dispatches are made. A utility may keep track of the
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| 18 | * layer it created, and change it as needed, if dynamic
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| 19 | * control of dispatch tables is needed.
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| 20 | */
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| 21 |
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| 22 | typedef struct crDispatchLayer {
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| 23 | SPUDispatchTable *dispatchTable;
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| 24 | void (*changedCallback)(SPUDispatchTable *changedTable, void *callbackParm);
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| 25 | void *callbackParm;
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| 26 | struct crDispatchLayer *next, *prev;
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| 27 | } crDispatchLayer;
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| 28 |
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| 29 | /** This has to be saved and restored for each graphics context */
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| 30 | typedef struct {
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| 31 | crDispatchLayer *topLayer;
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| 32 | crDispatchLayer *bottomLayer;
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| 33 | } crCurrentDispatchInfo;
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| 34 |
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| 35 | /**
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| 36 | * These are already called from appropriate opengl_stub
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| 37 | * routines, so SPUs or utilities shouldn't have to
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| 38 | * worry about them, as long as they let their
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| 39 | * parent routines for NewContext and MakeCurrent
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| 40 | * execute before they try to use any of the
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| 41 | * dispatch utilities.
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| 42 | */
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| 43 | DECLEXPORT(void) crDispatchInit(SPUDispatchTable *defaultTable);
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| 44 | DECLEXPORT(void) crInitDispatchInfo(crCurrentDispatchInfo *info);
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| 45 | DECLEXPORT(void) crSetCurrentDispatchInfo(crCurrentDispatchInfo *info);
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| 46 |
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| 47 | /**
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| 48 | * SPUs and utilities are expected to use these routines
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| 49 | * to modify dispatch tables. They should only be called
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| 50 | * once the current dispatch info is set (i.e., after
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| 51 | * the opengl_stub routine for MakeCurrent has a chance
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| 52 | * to run).
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| 53 | */
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| 54 | DECLEXPORT(crDispatchLayer) *crNewDispatchLayer(SPUDispatchTable *newTable,
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| 55 | void (*changedCallback)(SPUDispatchTable *changedTable, void *callbackParm),
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| 56 | void *callbackParm);
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| 57 | DECLEXPORT(void) crChangeDispatchLayer(crDispatchLayer *layer,
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| 58 | SPUDispatchTable *changedTable);
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| 59 | DECLEXPORT(void) crFreeDispatchLayer(crDispatchLayer *layer);
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| 60 |
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| 61 |
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| 62 | #ifdef __cplusplus
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| 63 | }
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| 64 | #endif
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| 65 |
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| 66 | #endif /* CR_DISPATCH_H */
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