gamma_macros.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

    dma.send_list     = NULL;                                              \
    dma.send_sizes    = NULL;                                              \
    dma.flags         = GAMMA_DMA_GET_FLAGS;                               \
    dma.request_count = (n);                                               \
    dma.request_size  = GAMMA_DMA_BUFFER_SIZE;                             \
    dma.request_list  = (idx);                                             \
    dma.request_sizes = (size);                                            \
                                                                           \
    do {                                                                   \
	if ((retcode = drmDMA((fd), &dma))) {                              \
	    DEBUG_DMACMDS(("drmDMA returned %d\n", retcode));              \
	}                                                                  \
    } while (!(dma).granted_count);                                        \
                                                                           \
    for (i = 0; i < (n); i++) {                                            \
	(size)[i] >>= 2; /* Convert from bytes to words */                 \
    }                                                                      \
} while (0)

#define SEND_DMA(fd, hHWCtx, n, idx, cnt)                                  \
do {                                                                       \
    drmDMAReq dma;                                                         \
    int retcode, i;                                                        \
                                                                           \
    for (i = 0; i < (n); i++) {                                            \
	(cnt)[i] <<= 2; /* Convert from words to bytes */                  \
    }                                                                      \
                                                                           \
    dma.context       = (hHWCtx);                                          \
    dma.send_count    = 1;                                                 \
    dma.send_list     = (idx);                                             \
    dma.send_sizes    = (cnt);                                             \
    dma.flags         = GAMMA_DMA_SEND_FLAGS;                              \
    dma.request_count = 0;                                                 \
    dma.request_size  = 0;                                                 \
    dma.request_list  = NULL;                                              \
    dma.request_sizes = NULL;                                              \
                                                                           \
    if ((retcode = drmDMA((fd), &dma))) {                                  \
	DEBUG_DMACMDS(("drmDMA returned %d\n", retcode));                  \
    }                                                                      \
                                                                           \
    for (i = 0; i < (n); i++) {                                            \
	(cnt)[i] = 0;                                                      \
    }                                                                      \
} while (0)
#endif

#define GET_FIRST_DMA(fd, hHWCtx, n, idx, size, buf, cnt, gPriv)           \
do {                                                                       \
    int i;                                                                 \
                                                                           \
    GET_DMA(fd, hHWCtx, n, idx, size);                                     \
                                                                           \
    for (i = 0; i < (n); i++) {                                            \
	(buf)[i] = (dmaBuf)(gPriv)->bufs->list[(idx)[i]].address;          \
	(cnt)[i] = 0;                                                      \
    }                                                                      \
} while (0)

#define PROCESS_DMA_BUFFER_TOP_HALF(gcp)                                   \
do {                                                                       \
    SEND_DMA((gcp)->driFd,                        \
	     (gcp)->hHWContext, 1, &(gcp)->bufIndex, &(gcp)->bufCount);    \
} while (0)

#define PROCESS_DMA_BUFFER_BOTTOM_HALF(gcp)                                \
do {                                                                       \
    GET_DMA((gcp)->driFd,                         \
	    (gcp)->hHWContext, 1, &(gcp)->bufIndex, &(gcp)->bufSize);      \
                                                                           \
    (gcp)->buf =                                                           \
	(dmaBuf)(gcp)->gammaScreen->bufs->list[(gcp)->bufIndex].address; \
} while (0)

#define PROCESS_DMA_BUFFER(gcp)                                        \
do {                                                                       \
    VALIDATE_DRAWABLE_INFO(gcp);                             \
    PROCESS_DMA_BUFFER_TOP_HALF(gcp);                                      \
    PROCESS_DMA_BUFFER_BOTTOM_HALF(gcp);                                   \
} while (0)

#ifdef DO_VALIDATE
#define VALIDATE_DRAWABLE_INFO_NO_LOCK(gcp)                                \
do {                                                                       \
    /*__DRIscreenPrivate *psp = gcp->driScreen;*/                          \
    __DRIdrawablePrivate *pdp = gcp->driDrawable;                          \
                                                                           \
    if (*(pdp->pStamp) != pdp->lastStamp) {                                \
	int old_index = pdp->index;                                        \
	while (*(pdp->pStamp) != pdp->lastStamp) {                         \
	    DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp);                          \
        }                                                                  \
	if (pdp->index != old_index) {                                     \
	    gcp->Window &= ~W_GIDMask;                                     \
	    gcp->Window |= (pdp->index << 5);                              \
	    CHECK_WC_DMA_BUFFER(gcp, 1);                                   \
	    WRITE(gcp->WCbuf, GLINTWindow, gcp->Window|(gcp->FrameCount<<9));\
	}                                                                  \
									   \
	gammaUpdateViewportOffset( gcp->glCtx);				   \
                                                                           \
	if (pdp->numClipRects == 1 &&                                      \
	    pdp->pClipRects->x1 ==  pdp->x &&                              \
	    pdp->pClipRects->x2 == (pdp->x+pdp->w) &&                      \
	    pdp->pClipRects->y1 ==  pdp->y &&                              \
	    pdp->pClipRects->y2 == (pdp->y+pdp->h)) {                      \
	    CHECK_WC_DMA_BUFFER(gcp, 1);                                   \
	    WRITE(gcp->WCbuf, Rectangle2DControl, 0);                     \
	    gcp->NotClipped = GL_TRUE;                                     \
	} else {                                                           \
	    CHECK_WC_DMA_BUFFER(gcp, 1);                                   \
	    WRITE(gcp->WCbuf, Rectangle2DControl, 1);                     \
	    gcp->NotClipped = GL_FALSE;                                    \
	}                                                                  \
	gcp->WindowChanged = GL_TRUE;                                      \
                                                                           \
	if (gcp->WCbufCount) {                                             \
	    SEND_DMA((gcp)->gammaScreen->driScreen->fd,                \
		     (gcp)->hHWContext, 1, &(gcp)->WCbufIndex,             \
		     &(gcp)->WCbufCount);                                  \
	    (gcp)->WCbufIndex = -1;                                        \
	}                                                                  \
    }                                                                      \
} while (0)

#define VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(gcp)                       \
do {                                                                       \
    if ((gcp)->WCbufIndex < 0) {                                           \
	GET_DMA((gcp)->gammaScreen->driScreen->fd,                     \
		(gcp)->hHWContext, 1, &(gcp)->WCbufIndex,                  \
		&(gcp)->WCbufSize);                                        \
                                                                           \
	(gcp)->WCbuf =                                                     \
	    (dmaBuf)(gcp)->gammaScreen->bufs->                           \
		list[(gcp)->WCbufIndex].address;                           \
    }                                                                      \
} while (0)

#define VALIDATE_DRAWABLE_INFO(gcp)                                    \
do {                                                                       \
    __DRIscreenPrivate *psp = gcp->driScreen;                          \
if (gcp->driDrawable) { \
    DRM_SPINLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);            \
    VALIDATE_DRAWABLE_INFO_NO_LOCK(gcp);                               \
    DRM_SPINUNLOCK(&psp->pSAREA->drawable_lock, psp->drawLockID);          \
    VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(gcp);                          \
} \
} while (0)
#else
#define VALIDATE_DRAWABLE_INFO(gcp)
#endif

#define CALC_LOG2(l2,s)                       \
do {                                          \
    int __s = s;                              \
    l2 = 0;                                   \
    while (__s > 1) { ++l2; __s >>= 1; }      \
} while (0)

#endif /* _GAMMA_MACROS_H_ */