diff options
Diffstat (limited to 'src/mesa/drivers/dri/mach64/mach64_span.c')
| -rw-r--r-- | src/mesa/drivers/dri/mach64/mach64_span.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/mach64/mach64_span.c b/src/mesa/drivers/dri/mach64/mach64_span.c new file mode 100644 index 0000000000..0c52c0c88c --- /dev/null +++ b/src/mesa/drivers/dri/mach64/mach64_span.c @@ -0,0 +1,168 @@ +/* -*- mode: c; c-basic-offset: 3 -*- */ +/* + * Copyright 2000 Gareth Hughes + * 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 + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * 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 NONINFRINGEMENT. IN NO EVENT SHALL + * GARETH HUGHES 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: + * Gareth Hughes <gareth@valinux.com> + * Leif Delgass <ldelgass@retinalburn.net> + * Jos�Fonseca <j_r_fonseca@yahoo.co.uk> + */ + +#include "mach64_context.h" +#include "mach64_ioctl.h" +#include "mach64_span.h" + +#include "swrast/swrast.h" + +#define DBG 0 + +#define LOCAL_VARS \ + mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); \ + __DRIscreen *sPriv = mmesa->driScreen; \ + __DRIdrawable *dPriv = mmesa->driDrawable; \ + driRenderbuffer *drb = (driRenderbuffer *) rb; \ + GLuint height = dPriv->h; \ + GLushort p; \ + (void) p; + +#define LOCAL_DEPTH_VARS \ + mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); \ + __DRIdrawable *dPriv = mmesa->driDrawable; \ + __DRIscreen *driScreen = mmesa->driScreen; \ + driRenderbuffer *drb = (driRenderbuffer *) rb; \ + GLuint height = dPriv->h; \ + char *buf = (char *)(driScreen->pFB + drb->offset + \ + (dPriv->x + dPriv->y * drb->pitch) * 2) + +#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS + +#define Y_FLIP( _y ) (height - _y - 1) + +#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() + + + +/* ================================================================ + * Color buffer + */ + +/* 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) mach64##x##_RGB565 +#define TAG2(x,y) mach64##x##_RGB565##y +#define GET_PTR(X,Y) (sPriv->pFB + drb->offset \ + + ((dPriv->y + (Y)) * drb->pitch + (dPriv->x + (X))) * drb->cpp) +#include "spantmp2.h" + + +/* 32 bit, ARGB8888 color spanline and pixel functions + */ +/* FIXME the old code always read back alpha as 0xff, i.e. fully opaque. + Was there a reason to do so ? If so that'll won't work with that template... */ +#define SPANTMP_PIXEL_FMT GL_BGRA +#define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV + +#define TAG(x) mach64##x##_ARGB8888 +#define TAG2(x,y) mach64##x##_ARGB8888##y +#define GET_PTR(X,Y) (sPriv->pFB + drb->offset \ + + ((dPriv->y + (Y)) * drb->pitch + (dPriv->x + (X))) * drb->cpp) +#include "spantmp2.h" + + +/* ================================================================ + * Depth buffer + */ + +/* 16 bit depthbuffer functions. + */ +#define VALUE_TYPE GLushort + +#define WRITE_DEPTH( _x, _y, d ) \ + *(GLushort *)(buf + ((_x) + (_y) * drb->pitch) * 2) = d; + +#define READ_DEPTH( d, _x, _y ) \ + d = *(GLushort *)(buf + ((_x) + (_y) * drb->pitch) * 2); + +#define TAG(x) mach64##x##_z16 +#include "depthtmp.h" + + +static void mach64SpanRenderStart( GLcontext *ctx ) +{ + mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); + LOCK_HARDWARE( mmesa ); + FINISH_DMA_LOCKED( mmesa ); +} + +static void mach64SpanRenderFinish( GLcontext *ctx ) +{ + mach64ContextPtr mmesa = MACH64_CONTEXT(ctx); + _swrast_flush( ctx ); + UNLOCK_HARDWARE( mmesa ); +} + +void mach64DDInitSpanFuncs( GLcontext *ctx ) +{ + struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); + swdd->SpanRenderStart = mach64SpanRenderStart; + swdd->SpanRenderFinish = mach64SpanRenderFinish; +} + + +/** + * Plug in the Get/Put routines for the given driRenderbuffer. + */ +void +mach64SetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis) +{ + if (drb->Base.Format == MESA_FORMAT_RGB565) { + mach64InitPointers_RGB565(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_ARGB8888) { + mach64InitPointers_ARGB8888(&drb->Base); + } + else if (drb->Base.Format == MESA_FORMAT_Z16) { + mach64InitDepthPointers_z16(&drb->Base); + } +} |