diff options
Diffstat (limited to 'src/mesa/drivers/dri/mga/mgaspan.c')
| -rw-r--r-- | src/mesa/drivers/dri/mga/mgaspan.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/mga/mgaspan.c b/src/mesa/drivers/dri/mga/mgaspan.c new file mode 100644 index 0000000000..10606c152c --- /dev/null +++ b/src/mesa/drivers/dri/mga/mgaspan.c @@ -0,0 +1,227 @@ +/* + * 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 <keith@tungstengraphics.com> + */ + +#include "main/mtypes.h" +#include "mgadd.h" +#include "mgacontext.h" +#include "mgaspan.h" +#include "mgaioctl.h" +#include "swrast/swrast.h" + +#define DBG 0 + +#define LOCAL_VARS \ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ + __DRIscreen *sPriv = mmesa->driScreen; \ + driRenderbuffer *drb = (driRenderbuffer *) rb; \ + const __DRIdrawable *dPriv = drb->dPriv; \ + GLuint pitch = drb->pitch; \ + GLuint height = dPriv->h; \ + char *buf = (char *)(sPriv->pFB + \ + drb->offset + \ + dPriv->x * drb->cpp + \ + dPriv->y * pitch); \ + GLuint p; \ + (void) buf; (void) p + + + +#define LOCAL_DEPTH_VARS \ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ + __DRIscreen *sPriv = mmesa->driScreen; \ + driRenderbuffer *drb = (driRenderbuffer *) rb; \ + const __DRIdrawable *dPriv = drb->dPriv; \ + GLuint pitch = drb->pitch; \ + GLuint height = dPriv->h; \ + char *buf = (char *)(sPriv->pFB + \ + drb->offset + \ + dPriv->x * drb->cpp + \ + dPriv->y * pitch) + +#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS + +#define HW_LOCK() + +/* FIXME could/should we use dPriv->numClipRects like the other drivers? */ +#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() + + + +#define Y_FLIP(_y) (height - _y - 1) + +/* 16 bit, RGB565 color spanline and pixel functions + */ +#define SPANTMP_PIXEL_FMT GL_RGB +#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5 + +#define TAG(x) mga##x##_565 +#define TAG2(x,y) mga##x##_565##y +#include "spantmp2.h" + +/* 32 bit, ARGB8888 color spanline and pixel functions + */ +#define SPANTMP_PIXEL_FMT GL_BGRA +#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV + +#define TAG(x) mga##x##_8888 +#define TAG2(x,y) mga##x##_8888##y +#include "spantmp2.h" + + +/* 16 bit depthbuffer functions. + */ +#define VALUE_TYPE GLushort + +#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##_z16 +#include "depthtmp.h" + + + + +/* 32 bit depthbuffer functions. + */ +#define VALUE_TYPE GLuint + +#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##_z32 +#include "depthtmp.h" + + + +/* 24/8 bit interleaved depth/stencil functions + */ +#define VALUE_TYPE GLuint + +#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##_z24_s8 +#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##_z24_s8 +#include "stenciltmp.h" + + +static void +mgaSpanRenderStart( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + FLUSH_BATCH( mmesa ); + LOCK_HARDWARE_QUIESCENT( mmesa ); +} + +static void +mgaSpanRenderFinish( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + _swrast_flush( ctx ); + UNLOCK_HARDWARE( mmesa ); +} + +/** + * Initialize the driver callbacks for the read / write span functions. + * + * \bug + * To really support RGB888 and RGBA8888 visuals, we need separate read and + * write routines for 888 and 8888. We also need to determine whether or not + * the visual has destination alpha. + */ +void mgaDDInitSpanFuncs( GLcontext *ctx ) +{ + struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); + swdd->SpanRenderStart = mgaSpanRenderStart; + swdd->SpanRenderFinish = mgaSpanRenderFinish; +} + + +/** + * Plug in the Get/Put routines for the given driRenderbuffer. + */ +void +mgaSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis) +{ + if (drb->Base.Format == MESA_FORMAT_RGB565) { + mgaInitPointers_565(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_ARGB8888) { + mgaInitPointers_8888(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_Z16) { + mgaInitDepthPointers_z16(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_Z24_S8) { + mgaInitDepthPointers_z24_s8(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_Z32) { + mgaInitDepthPointers_z32(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_S8) { + mgaInitStencilPointers_z24_s8(&drb->Base); + } +} |