| 1 | /* Copyright (c) 2001, Stanford University
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| 2 | * All rights reserved.
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| 3 | *
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| 4 | * See the file LICENSE.txt for information on redistributing this software.
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| 5 | */
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| 6 |
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| 7 | #ifndef CR_STATE_BUFFEROBJECT_H
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| 8 | #define CR_STATE_BUFFEROBJECT_H
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| 9 |
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| 10 | #include "cr_hash.h"
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| 11 | #include "state/cr_statetypes.h"
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| 12 | #include "state/cr_statefuncs.h"
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| 13 |
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| 14 | #ifdef __cplusplus
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| 15 | extern "C" {
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| 16 | #endif
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| 17 |
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| 18 | typedef struct {
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| 19 | CRbitvalue dirty[CR_MAX_BITARRAY];
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| 20 | CRbitvalue arrayBinding[CR_MAX_BITARRAY];
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| 21 | CRbitvalue elementsBinding[CR_MAX_BITARRAY];
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| 22 | CRbitvalue packBinding[CR_MAX_BITARRAY];
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| 23 | CRbitvalue unpackBinding[CR_MAX_BITARRAY];
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| 24 | } CRBufferObjectBits;
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| 25 |
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| 26 |
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| 27 | /*
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| 28 | * Buffer object, like a texture object, but encapsulates arbitrary
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| 29 | * data (vertex, image, etc).
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| 30 | */
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| 31 | typedef struct {
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| 32 | GLuint refCount;
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| 33 | GLuint id;
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| 34 | GLuint hwid;
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| 35 | GLenum usage;
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| 36 | GLenum access;
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| 37 | GLuint size; /* buffer size in bytes */
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| 38 | GLvoid *pointer; /* only valid while buffer is mapped */
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| 39 | GLvoid *data; /* the buffer data, if retainBufferData is true */
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| 40 | GLboolean bResyncOnRead; /* buffer data could be changed on server side,
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| 41 | so we need to resync every time guest wants to read from it*/
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| 42 | CRbitvalue dirty[CR_MAX_BITARRAY]; /* dirty data or state */
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| 43 | GLintptrARB dirtyStart, dirtyLength; /* dirty region */
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| 44 | /* bitfield representing the object usage. 1 means the object is used by the context with the given bitid */
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| 45 | CRbitvalue ctxUsage[CR_MAX_BITARRAY];
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| 46 | } CRBufferObject;
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| 47 |
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| 48 | typedef struct {
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| 49 | GLboolean retainBufferData; /* should state tracker retain buffer data? */
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| 50 | CRBufferObject *arrayBuffer;
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| 51 | CRBufferObject *elementsBuffer;
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| 52 | CRBufferObject *packBuffer;
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| 53 | CRBufferObject *unpackBuffer;
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| 54 |
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| 55 | CRBufferObject *nullBuffer; /* name = 0 */
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| 56 | } CRBufferObjectState;
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| 57 |
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| 58 | DECLEXPORT(CRBufferObject *) crStateGetBoundBufferObject(GLenum target, CRBufferObjectState *b);
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| 59 | DECLEXPORT(GLboolean) crStateIsBufferBound(GLenum target);
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| 60 | struct CRContext;
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| 61 | DECLEXPORT(GLboolean) crStateIsBufferBoundForCtx(struct CRContext *g, GLenum target);
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| 62 |
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| 63 | DECLEXPORT(GLuint) STATE_APIENTRY crStateBufferHWIDtoID(GLuint hwid);
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| 64 | DECLEXPORT(GLuint) STATE_APIENTRY crStateGetBufferHWID(GLuint id);
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| 65 |
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| 66 | DECLEXPORT(void) crStateRegBuffers(GLsizei n, GLuint *buffers);
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| 67 | #ifdef __cplusplus
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| 68 | }
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| 69 | #endif
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| 70 |
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| 71 | #endif /* CR_STATE_BUFFEROBJECT_H */
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