src/video/fbcon/SDL_fbriva.c
author Edgar Simo <bobbens@gmail.com>
Mon, 04 Aug 2008 11:30:16 +0000
branchgsoc2008_force_feedback
changeset 2582 9f0f0a532343
parent 1895 c121d94672cb
child 2698 e1da92da346c
permissions -rw-r--r--
Fixed warning.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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#include "SDL_video.h"
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#include "../SDL_blit.h"
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#include "SDL_fbriva.h"
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#include "riva_mmio.h"
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#include "riva_regs.h"
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static int FifoEmptyCount = 0;
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static int FifoFreeCount = 0;
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/* Wait for vertical retrace */
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static void
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WaitVBL(_THIS)
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{
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    volatile Uint8 *port = (Uint8 *) (mapped_io + PCIO_OFFSET + 0x3DA);
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    while ((*port & 0x08));
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    while (!(*port & 0x08));
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}
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static void
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NV3WaitIdle(_THIS)
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{
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    RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
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    while ((Rop->FifoFree < FifoEmptyCount) ||
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           (*(mapped_io + PGRAPH_OFFSET + 0x000006B0) & 0x01));
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}
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static void
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NV4WaitIdle(_THIS)
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{
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    RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
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    while ((Rop->FifoFree < FifoEmptyCount) ||
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           (*(mapped_io + PGRAPH_OFFSET + 0x00000700) & 0x01));
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}
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#if 0                           /* Not yet implemented? */
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/* Sets video mem colorkey and accelerated blit function */
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static int
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SetHWColorKey(_THIS, SDL_Surface * surface, Uint32 key)
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{
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    return (0);
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}
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/* Sets per surface hardware alpha value */
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static int
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SetHWAlpha(_THIS, SDL_Surface * surface, Uint8 value)
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{
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    return (0);
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}
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#endif /* Not yet implemented */
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static int
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FillHWRect(_THIS, SDL_Surface * dst, SDL_Rect * rect, Uint32 color)
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{
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    int dstX, dstY;
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    int dstW, dstH;
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    RivaBitmap *Bitmap = (RivaBitmap *) (mapped_io + BITMAP_OFFSET);
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    /* Don't blit to the display surface when switched away */
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    if (switched_away) {
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        return -2;              /* no hardware access */
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    }
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    if (dst == this->screen) {
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        SDL_mutexP(hw_lock);
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    }
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    /* Set up the X/Y base coordinates */
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    dstW = rect->w;
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    dstH = rect->h;
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    FB_dst_to_xy(this, dst, &dstX, &dstY);
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    /* Adjust for the current rectangle */
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    dstX += rect->x;
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    dstY += rect->y;
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    RIVA_FIFO_FREE(Bitmap, 1);
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    Bitmap->Color1A = color;
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    RIVA_FIFO_FREE(Bitmap, 2);
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    Bitmap->UnclippedRectangle[0].TopLeft = (dstX << 16) | dstY;
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    Bitmap->UnclippedRectangle[0].WidthHeight = (dstW << 16) | dstH;
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    FB_AddBusySurface(dst);
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    if (dst == this->screen) {
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        SDL_mutexV(hw_lock);
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    }
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    return (0);
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}
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static int
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HWAccelBlit(SDL_Surface * src, SDL_Rect * srcrect,
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            SDL_Surface * dst, SDL_Rect * dstrect)
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{
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    SDL_VideoDevice *this = current_video;
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    int srcX, srcY;
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    int dstX, dstY;
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    int dstW, dstH;
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    RivaScreenBlt *Blt = (RivaScreenBlt *) (mapped_io + BLT_OFFSET);
133
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   122
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    /* FIXME: For now, only blit to display surface */
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    if (dst->pitch != SDL_VideoSurface->pitch) {
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        return (src->map->sw_blit(src, srcrect, dst, dstrect));
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   126
    }
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   127
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    /* Don't blit to the display surface when switched away */
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    if (switched_away) {
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   130
        return -2;              /* no hardware access */
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   131
    }
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    if (dst == this->screen) {
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        SDL_mutexP(hw_lock);
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   134
    }
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   135
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    /* Calculate source and destination base coordinates (in pixels) */
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    dstW = dstrect->w;
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   138
    dstH = dstrect->h;
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   139
    FB_dst_to_xy(this, src, &srcX, &srcY);
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   140
    FB_dst_to_xy(this, dst, &dstX, &dstY);
133
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   141
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   142
    /* Adjust for the current blit rectangles */
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   143
    srcX += srcrect->x;
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   144
    srcY += srcrect->y;
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   145
    dstX += dstrect->x;
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   146
    dstY += dstrect->y;
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   147
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    RIVA_FIFO_FREE(Blt, 3);
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   149
    Blt->TopLeftSrc = (srcY << 16) | srcX;
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    Blt->TopLeftDst = (dstY << 16) | dstX;
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   151
    Blt->WidthHeight = (dstH << 16) | dstW;
133
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   152
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    FB_AddBusySurface(src);
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   154
    FB_AddBusySurface(dst);
133
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   155
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   156
    if (dst == this->screen) {
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        SDL_mutexV(hw_lock);
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   158
    }
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   159
    return (0);
133
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   160
}
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   161
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static int
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CheckHWBlit(_THIS, SDL_Surface * src, SDL_Surface * dst)
133
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{
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   165
    int accelerated;
133
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   166
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   167
    /* Set initial acceleration on */
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   168
    src->flags |= SDL_HWACCEL;
133
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   169
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   170
    /* Set the surface attributes */
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   171
    if ((src->flags & SDL_SRCALPHA) == SDL_SRCALPHA) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   172
        if (!this->info.blit_hw_A) {
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            src->flags &= ~SDL_HWACCEL;
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   174
        }
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   175
    }
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   176
    if ((src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   177
        if (!this->info.blit_hw_CC) {
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   178
            src->flags &= ~SDL_HWACCEL;
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   179
        }
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   180
    }
133
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   181
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   182
    /* Check to see if final surface blit is accelerated */
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   183
    accelerated = !!(src->flags & SDL_HWACCEL);
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   184
    if (accelerated) {
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   185
        src->map->hw_blit = HWAccelBlit;
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   186
    }
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   187
    return (accelerated);
133
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   188
}
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   189
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   190
void
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   191
FB_RivaAccel(_THIS, __u32 card)
133
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   192
{
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   193
    RivaRop *Rop = (RivaRop *) (mapped_io + ROP_OFFSET);
133
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diff changeset
   194
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   195
    /* We have hardware accelerated surface functions */
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   196
    this->CheckHWBlit = CheckHWBlit;
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   197
    wait_vbl = WaitVBL;
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   198
    switch (card) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   199
    case FB_ACCEL_NV3:
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   200
        wait_idle = NV3WaitIdle;
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   201
        break;
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   202
    case FB_ACCEL_NV4:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   203
        wait_idle = NV4WaitIdle;
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   204
        break;
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   205
    default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   206
        /* Hmm... FIXME */
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   207
        break;
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   208
    }
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   209
    FifoEmptyCount = Rop->FifoFree;
133
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   210
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   211
    /* The Riva has an accelerated color fill */
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   212
    this->info.blit_fill = 1;
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   213
    this->FillHWRect = FillHWRect;
133
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   214
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   215
    /* The Riva has accelerated normal and colorkey blits. */
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   216
    this->info.blit_hw = 1;
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   217
#if 0                           /* Not yet implemented? */
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   218
    this->info.blit_hw_CC = 1;
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   219
    this->SetHWColorKey = SetHWColorKey;
133
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   220
#endif
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   221
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   222
#if 0                           /* Not yet implemented? */
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   223
    /* The Riva has an accelerated alpha blit */
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   224
    this->info.blit_hw_A = 1;
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   225
    this->SetHWAlpha = SetHWAlpha;
133
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diff changeset
   226
#endif
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   227
}
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   228
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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   229
/* vi: set ts=4 sw=4 expandtab: */