From 848ff108a06c1a8171bab879669c08c9274908f5 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Wed, 6 Aug 2003 18:01:13 +0000 Subject: mga driver, brought over by Jon Smirl --- src/mesa/drivers/dri/mga/mgaspan.c | 284 +++++++++++++++++++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 src/mesa/drivers/dri/mga/mgaspan.c (limited to 'src/mesa/drivers/dri/mga/mgaspan.c') diff --git a/src/mesa/drivers/dri/mga/mgaspan.c b/src/mesa/drivers/dri/mga/mgaspan.c new file mode 100644 index 0000000000..8dc971cfc5 --- /dev/null +++ b/src/mesa/drivers/dri/mga/mgaspan.c @@ -0,0 +1,284 @@ +/* + * Copyright 2000-2001 VA Linux Systems, Inc. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: + * Keith Whitwell + */ +/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaspan.c,v 1.11 2002/10/30 12:51:36 alanh Exp $ */ + +#include "mtypes.h" +#include "mgadd.h" +#include "mgacontext.h" +#include "mgaspan.h" +#include "mgaioctl.h" +#include "swrast/swrast.h" + +#define DBG 0 + + +#define LOCAL_VARS \ + __DRIdrawablePrivate *dPriv = mmesa->driDrawable; \ + mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; \ + __DRIscreenPrivate *sPriv = mmesa->driScreen; \ + GLuint pitch = mgaScreen->frontPitch; \ + GLuint height = dPriv->h; \ + char *read_buf = (char *)(sPriv->pFB + \ + mmesa->readOffset + \ + dPriv->x * mgaScreen->cpp + \ + dPriv->y * pitch); \ + char *buf = (char *)(sPriv->pFB + \ + mmesa->drawOffset + \ + dPriv->x * mgaScreen->cpp + \ + dPriv->y * pitch); \ + GLuint p; \ + (void) read_buf; (void) buf; (void) p + + + +#define LOCAL_DEPTH_VARS \ + __DRIdrawablePrivate *dPriv = mmesa->driDrawable; \ + mgaScreenPrivate *mgaScreen = mmesa->mgaScreen; \ + __DRIscreenPrivate *sPriv = mmesa->driScreen; \ + GLuint pitch = mgaScreen->frontPitch; \ + GLuint height = dPriv->h; \ + char *buf = (char *)(sPriv->pFB + \ + mgaScreen->depthOffset + \ + dPriv->x * mgaScreen->cpp + \ + dPriv->y * pitch) + +#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS + +#define CLIPPIXEL(_x,_y) (_x >= minx && _x < maxx && \ + _y >= miny && _y < maxy) + +#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i ) \ + if ( _y < miny || _y >= maxy ) { \ + _n1 = 0, _x1 = x; \ + } else { \ + _n1 = _n; \ + _x1 = _x; \ + if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \ + if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx); \ + } + + +#define HW_LOCK() \ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ + FLUSH_BATCH(mmesa); \ + LOCK_HARDWARE_QUIESCENT(mmesa); + + +#define HW_CLIPLOOP() \ + do { \ + int _nc = mmesa->numClipRects; \ + while (_nc--) { \ + int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX; \ + int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY; \ + int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX; \ + int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY; + +#define HW_ENDCLIPLOOP() \ + } \ + } while (0) + +#define HW_UNLOCK() \ + UNLOCK_HARDWARE(mmesa); + + + + + + + +/* 16 bit, 565 rgb color spanline and pixel functions + */ +#define Y_FLIP(_y) (height - _y - 1) + +#undef INIT_MONO_PIXEL +#define INIT_MONO_PIXEL(p, color) \ + p = MGAPACKCOLOR565( color[0], color[1], color[2] ) + + +#define WRITE_RGBA( _x, _y, r, g, b, a ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = ( (((int)r & 0xf8) << 8) | \ + (((int)g & 0xfc) << 3) | \ + (((int)b & 0xf8) >> 3)) + +#define WRITE_PIXEL( _x, _y, p ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = p + +#define READ_RGBA( rgba, _x, _y ) \ +do { \ + GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch); \ + rgba[0] = (((p >> 11) & 0x1f) * 255) / 31; \ + rgba[1] = (((p >> 5) & 0x3f) * 255) / 63; \ + rgba[2] = (((p >> 0) & 0x1f) * 255) / 31; \ + rgba[3] = 255; \ +} while(0) + +#define TAG(x) mga##x##_565 +#include "spantmp.h" + + + + + +/* 32 bit, 8888 argb color spanline and pixel functions + */ + +#undef INIT_MONO_PIXEL +#define INIT_MONO_PIXEL(p, color) \ + p = MGAPACKCOLOR8888( color[0], color[1], color[2], color[3] ) + + +#define WRITE_RGBA(_x, _y, r, g, b, a) \ + *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) | \ + (g << 8) | \ + (b << 0) | \ + (a << 24) ) + +#define WRITE_PIXEL(_x, _y, p) \ + *(GLuint *)(buf + _x*4 + _y*pitch) = p + +#define READ_RGBA(rgba, _x, _y) \ + do { \ + GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch); \ + rgba[0] = (p >> 16) & 0xff; \ + rgba[1] = (p >> 8) & 0xff; \ + rgba[2] = (p >> 0) & 0xff; \ + rgba[3] = 0xff; \ + } while (0) + +#define TAG(x) mga##x##_8888 +#include "spantmp.h" + + + + +/* 16 bit depthbuffer functions. + */ +#define WRITE_DEPTH( _x, _y, d ) \ + *(GLushort *)(buf + _x*2 + _y*pitch) = d; + +#define READ_DEPTH( d, _x, _y ) \ + d = *(GLushort *)(buf + _x*2 + _y*pitch); + +#define TAG(x) mga##x##_16 +#include "depthtmp.h" + + + + +/* 32 bit depthbuffer functions. + */ +#define WRITE_DEPTH( _x, _y, d ) \ + *(GLuint *)(buf + _x*4 + _y*pitch) = d; + +#define READ_DEPTH( d, _x, _y ) \ + d = *(GLuint *)(buf + _x*4 + _y*pitch); + +#define TAG(x) mga##x##_32 +#include "depthtmp.h" + + + +/* 24/8 bit interleaved depth/stencil functions + */ +#define WRITE_DEPTH( _x, _y, d ) { \ + GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \ + tmp &= 0xff; \ + tmp |= (d) << 8; \ + *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \ +} + +#define READ_DEPTH( d, _x, _y ) { \ + d = (*(GLuint *)(buf + _x*4 + _y*pitch) & ~0xff) >> 8; \ +} + +#define TAG(x) mga##x##_24_8 +#include "depthtmp.h" + +#define WRITE_STENCIL( _x, _y, d ) { \ + GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch); \ + tmp &= 0xffffff00; \ + tmp |= d & 0xff; \ + *(GLuint *)(buf + _x*4 + _y*pitch) = tmp; \ +} + +#define READ_STENCIL( d, _x, _y ) \ + d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff; + +#define TAG(x) mga##x##_24_8 +#include "stenciltmp.h" + + + +void mgaDDInitSpanFuncs( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); + + switch (mmesa->mgaScreen->cpp) { + case 2: + swdd->WriteRGBASpan = mgaWriteRGBASpan_565; + swdd->WriteRGBSpan = mgaWriteRGBSpan_565; + swdd->WriteMonoRGBASpan = mgaWriteMonoRGBASpan_565; + swdd->WriteRGBAPixels = mgaWriteRGBAPixels_565; + swdd->WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_565; + swdd->ReadRGBASpan = mgaReadRGBASpan_565; + swdd->ReadRGBAPixels = mgaReadRGBAPixels_565; + + swdd->ReadDepthSpan = mgaReadDepthSpan_16; + swdd->WriteDepthSpan = mgaWriteDepthSpan_16; + swdd->ReadDepthPixels = mgaReadDepthPixels_16; + swdd->WriteDepthPixels = mgaWriteDepthPixels_16; + break; + + case 4: + swdd->WriteRGBASpan = mgaWriteRGBASpan_8888; + swdd->WriteRGBSpan = mgaWriteRGBSpan_8888; + swdd->WriteMonoRGBASpan = mgaWriteMonoRGBASpan_8888; + swdd->WriteRGBAPixels = mgaWriteRGBAPixels_8888; + swdd->WriteMonoRGBAPixels = mgaWriteMonoRGBAPixels_8888; + swdd->ReadRGBASpan = mgaReadRGBASpan_8888; + swdd->ReadRGBAPixels = mgaReadRGBAPixels_8888; + + if (!mmesa->hw_stencil) { + swdd->ReadDepthSpan = mgaReadDepthSpan_32; + swdd->WriteDepthSpan = mgaWriteDepthSpan_32; + swdd->ReadDepthPixels = mgaReadDepthPixels_32; + swdd->WriteDepthPixels = mgaWriteDepthPixels_32; + } else { + swdd->ReadDepthSpan = mgaReadDepthSpan_24_8; + swdd->WriteDepthSpan = mgaWriteDepthSpan_24_8; + swdd->ReadDepthPixels = mgaReadDepthPixels_24_8; + swdd->WriteDepthPixels = mgaWriteDepthPixels_24_8; + + swdd->ReadStencilSpan = mgaReadStencilSpan_24_8; + swdd->WriteStencilSpan = mgaWriteStencilSpan_24_8; + swdd->ReadStencilPixels = mgaReadStencilPixels_24_8; + swdd->WriteStencilPixels = mgaWriteStencilPixels_24_8; + } + break; + } +} -- cgit v1.2.3