52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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/*
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* Copyright (c) 1993-1995 Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: prepmap.c 2.6 1996/10/16 15:18:26 NEELA Exp $
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* $Locker: $
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*
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* Precompute information for texture maps
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*/
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#include "v1db.h"
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#include "brassert.h"
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#include "shortcut.h"
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BR_RCS_ID("$Id: prepmap.c 2.6 1996/10/16 15:18:26 NEELA Exp $")
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void BR_PUBLIC_ENTRY BrMapUpdate(br_pixelmap *map, br_uint_16 flags)
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{
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UASSERT_MESSAGE("Invalid BrMapUpdate pointer", map != NULL);
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BrBufferUpdate(map, BRT_COLOUR_MAP_O, flags);
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}
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void BrBufferUpdate(br_pixelmap *pm, br_token use, br_uint_16 flags)
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{
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br_token_value tv[] = {
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{BRT_PREFER_SHARE_B, BR_FALSE},
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{BRT_CAN_SHARE_B, BR_TRUE},
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{0}
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};
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ASSERT_MESSAGE("Invalid BrBufferUpdate pointer", pm != NULL);
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if(v1db.renderer == NULL)
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return;
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if(flags & BR_MAPU_SHARED)
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tv[0].v.b = BR_TRUE;
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/*
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* If there is a stored buffer, update that, otherwise allocate a new buffer
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*/
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if(pm->stored)
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BufferStoredUpdate(pm->stored, (br_device_pixelmap *)pm, tv);
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else
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RendererBufferStoredNew(v1db.renderer, (br_buffer_stored **)&pm->stored, use, (br_device_pixelmap *)pm, tv);
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}
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void BrBufferClear(br_pixelmap *pm)
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{
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if(pm->stored) {
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ObjectFree(pm->stored);
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pm->stored = NULL;
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}
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}
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