307 lines
8.8 KiB
C
307 lines
8.8 KiB
C
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/*
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* $Id$
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*
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* Copyright © 2004 Damien Ciabrini
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Anders Carlsson not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Anders Carlsson makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* DAMIEN CIABRINI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL ANDERS CARLSSON BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Header$ */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "mga.h"
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#include "g400_common.h"
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static PixmapPtr currentSrc;
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static PixmapPtr currentMask;
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static CARD32 mgaBlendOP[14] = {
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/* Clear */
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MGA_SRC_ZERO | MGA_DST_ZERO,
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/* Src */
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MGA_SRC_ONE | MGA_DST_ZERO,
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/* Dst */
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MGA_SRC_ZERO | MGA_DST_ONE,
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/* Over */
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MGA_SRC_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
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/* OverReverse */
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MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ONE,
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/* In */
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MGA_SRC_DST_ALPHA | MGA_DST_ZERO,
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/* InReverse */
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MGA_SRC_ZERO | MGA_DST_SRC_ALPHA,
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/* Out */
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MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ZERO,
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/* OutReverse */
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MGA_SRC_ZERO | MGA_DST_ONE_MINUS_SRC_ALPHA,
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/* Atop */
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MGA_SRC_DST_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
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/* AtopReverse */
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MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_SRC_ALPHA,
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/* Xor */
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MGA_SRC_ONE_MINUS_DST_ALPHA | MGA_DST_ONE_MINUS_SRC_ALPHA,
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/* Add */
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MGA_SRC_ONE | MGA_DST_ONE,
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/* Saturate */
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MGA_SRC_SRC_ALPHA_SATURATE | MGA_DST_ONE
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};
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static int MGA_LOG2( int val )
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{
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int ret = 0;
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while (val >> ret)
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ret++;
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return ((1 << (ret-1)) == val) ? (ret-1) : ret;
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}
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Bool
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mgaPrepareBlend (int op,
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PicturePtr pSrcPicture,
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PicturePtr pDstPicture,
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PixmapPtr pSrc,
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PixmapPtr pDst)
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{
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return mgaPrepareComposite (op, pSrcPicture, NULL, pDstPicture,
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pSrc, NULL, pDst);
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}
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void
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mgaBlend (int srcX,
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int srcY,
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int dstX,
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int dstY,
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int width,
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int height)
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{
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mgaComposite (srcX, srcY, 0, 0, dstX, dstY, width, height);
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}
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void
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mgaDoneBlend (void)
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{
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mgaDoneComposite ();
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}
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static Bool
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PrepareSourceTexture (int tmu,
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PicturePtr pSrcPicture,
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PixmapPtr pSrc)
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{
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KdScreenPriv (pSrc->drawable.pScreen);
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int mem_base=(int)pScreenPriv->screen->memory_base;
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int pitch = pSrc->devKind / (pSrc->drawable.bitsPerPixel >> 3);
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int w = pSrc->drawable.width;
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int h = pSrc->drawable.height;
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int w_log2 = MGA_LOG2(w);
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int h_log2 = MGA_LOG2(h);
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int texctl=MGA_PITCHEXT | ((pitch&0x7ff)<<9) |
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MGA_TAKEY | MGA_CLAMPUV | MGA_NOPERSPECTIVE;
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int texctl2=MGA_G400_TC2_MAGIC;
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if ((w > 2047) || (h > 2047))
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MGA_FALLBACK(("Picture too large for composition (%dx%d)\n", w, h));
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switch (pSrcPicture->format) {
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case PICT_a8r8g8b8:
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case PICT_x8r8g8b8:
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case PICT_a8b8g8r8:
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case PICT_x8b8g8r8:
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texctl |= MGA_TW32;
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break;
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case PICT_r5g6b5:
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case PICT_b5g6r5:
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texctl |= MGA_TW16;
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break;
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case PICT_a8:
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texctl |= MGA_TW8A;
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break;
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default:
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MGA_FALLBACK(("unsupported Picture format for composition (%x)\n",
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pSrcPicture->format));
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}
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if (tmu == 1) texctl2 |= MGA_TC2_DUALTEX | MGA_TC2_SELECT_TMU1;
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mgaWaitAvail (6);
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MGA_OUT32 (mmio, MGA_REG_TEXCTL2, texctl2);
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MGA_OUT32 (mmio, MGA_REG_TEXCTL, texctl);
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/* Source (texture) address + pitch */
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MGA_OUT32 (mmio, MGA_REG_TEXORG, ((int)pSrc->devPrivate.ptr - mem_base));
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MGA_OUT32 (mmio, MGA_REG_TEXWIDTH, (w-1)<<18 | ((8-w_log2)&63)<<9 | w_log2);
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MGA_OUT32 (mmio, MGA_REG_TEXHEIGHT, (h-1)<<18 | ((8-h_log2)&63)<<9 | h_log2);
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/* Disable filtering since we aren't doing stretch blit */
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MGA_OUT32 (mmio, MGA_REG_TEXFILTER, (0x10<<21) | MGA_MAG_NRST | MGA_MIN_NRST);
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if (tmu == 1) {
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mgaWaitAvail (1);
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MGA_OUT32 (mmio, MGA_REG_TEXCTL2, MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX);
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}
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return TRUE;
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}
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Bool
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mgaPrepareComposite (int op,
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PicturePtr pSrcPicture,
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PicturePtr pMaskPicture,
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PicturePtr pDstPicture,
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PixmapPtr pSrc,
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PixmapPtr pMask,
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PixmapPtr pDst)
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{
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KdScreenPriv (pSrc->drawable.pScreen);
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int mem_base=(int)pScreenPriv->screen->memory_base;
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int cmd;
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/* sometimes mgaPrepareComposite is given the same pointer for Src
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* and Mask. PSrcPicture is an unsupported format (x8b8g8r8) whereas
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* pMaskPicture is supported (a8r8g8b8). We Choose to render a
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* simple blend and using pMaskPicture as the Source.
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*/
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if (pMask == pSrc) {
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pMask=NULL;
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pMaskPicture=NULL;
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}
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mgaWaitIdle();
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/* Init MGA (clipping) */
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mgaSetup (pSrc->drawable.pScreen, pDst->drawable.bitsPerPixel, 5);
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MGA_OUT32 (mmio, MGA_REG_TMR1, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR2, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR3, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR4, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR5, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR6, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR7, 0);
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MGA_OUT32 (mmio, MGA_REG_TMR8, 0x10000);
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/* Destination flags */
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mgaWaitAvail (2);
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MGA_OUT32 (mmio, MGA_REG_DSTORG, ((int)pDst->devPrivate.ptr - mem_base));
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MGA_OUT32 (mmio, MGA_REG_PITCH,
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pDst->devKind / (pDst->drawable.bitsPerPixel >> 3));
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/* Source(s) flags */
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if (!PrepareSourceTexture (0, pSrcPicture, pSrc)) return FALSE;
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if (pMask != NULL)
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if (!PrepareSourceTexture (1, pMaskPicture, pMask)) return FALSE;
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/* MultiTexture modulation */
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mgaWaitAvail (2);
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MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE0, MGA_TDS_COLOR_SEL_ARG1);
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if (pMask != NULL) {
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if (PICT_FORMAT_A (pSrcPicture->format) == 0) {
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MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1,
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MGA_TDS_COLOR_ARG2_PREVSTAGE | MGA_TDS_COLOR_SEL_ARG2 |
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MGA_TDS_ALPHA_SEL_ARG1);
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} else {
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MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1,
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MGA_TDS_COLOR_ARG2_PREVSTAGE | MGA_TDS_COLOR_SEL_ARG2 |
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MGA_TDS_ALPHA_ARG2_PREVSTAGE | MGA_TDS_ALPHA_SEL_MUL);
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}
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} else {
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MGA_OUT32 (mmio, MGA_REG_TDUALSTAGE1, 0);
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}
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cmd = MGA_OPCOD_TEXTURE_TRAP | MGA_ATYPE_RSTR | 0x000c0000 |
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MGA_DWGCTL_SHIFTZERO | MGA_DWGCTL_SGNZERO | MGA_DWGCTL_ARZERO |
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MGA_ATYPE_I;
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mgaWaitAvail (2);
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MGA_OUT32 (mmio, MGA_REG_DWGCTL, cmd);
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MGA_OUT32 (mmio, MGA_REG_ALPHACTRL, MGA_ALPHACHANNEL | mgaBlendOP[op]);
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currentSrc=pSrc;
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currentMask=pMask;
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return TRUE;
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}
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void
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mgaComposite (int srcX,
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int srcY,
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int maskX,
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int maskY,
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int dstX,
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int dstY,
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int width,
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int height)
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{
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int src_w2 = MGA_LOG2 (currentSrc->drawable.width);
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int src_h2 = MGA_LOG2 (currentSrc->drawable.height);
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/* Source positions can be outside source textures' boundaries.
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* We clamp the values here to avoid rendering glitches.
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*/
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srcX=srcX % currentSrc->drawable.width;
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srcY=srcY % currentSrc->drawable.height;
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maskX=maskX % currentMask->drawable.width;
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maskY=maskY % currentMask->drawable.height;
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mgaWaitAvail (4);
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/* Start position in the texture */
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MGA_OUT32 (mmio, MGA_REG_TMR6, srcX<<(20-src_w2));
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MGA_OUT32 (mmio, MGA_REG_TMR7, srcY<<(20-src_h2));
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/* Increments (1 since we aren't doing stretch blit) */
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MGA_OUT32 (mmio, MGA_REG_TMR0, 1<<(20-src_w2));
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MGA_OUT32 (mmio, MGA_REG_TMR3, 1<<(20-src_h2));
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if (currentMask != NULL) {
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int mask_w2 = MGA_LOG2 (currentMask->drawable.width);
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int mask_h2 = MGA_LOG2 (currentMask->drawable.height);
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mgaWaitAvail (6);
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MGA_OUT32 (mmio, MGA_REG_TEXCTL2,
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MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX | MGA_TC2_SELECT_TMU1);
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MGA_OUT32 (mmio, MGA_REG_TMR6, maskX<<(20-mask_w2));
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MGA_OUT32 (mmio, MGA_REG_TMR7, maskY<<(20-mask_h2));
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MGA_OUT32 (mmio, MGA_REG_TMR0, 1<<(20-mask_w2));
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MGA_OUT32 (mmio, MGA_REG_TMR3, 1<<(20-mask_h2));
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MGA_OUT32 (mmio, MGA_REG_TEXCTL2, MGA_G400_TC2_MAGIC | MGA_TC2_DUALTEX);
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}
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/* Destination Bounding Box
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* (Boundary Right | Boundary Left, Y dest | Height)
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*/
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mgaWaitAvail (2);
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MGA_OUT32 (mmio, MGA_REG_FXBNDRY,
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((dstX + width) << 16) | (dstX & 0xffff));
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MGA_OUT32 (mmio, MGA_REG_YDSTLEN | MGA_REG_EXEC,
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(dstY << 16) | (height & 0xffff));
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}
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void
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mgaDoneComposite (void)
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{
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}
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