diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgaspan.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgaspan.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgaspan.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgaspan.c new file mode 100644 index 000000000..c62b1c875 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgaspan.c @@ -0,0 +1,312 @@ +/* + * 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> + */ +/* $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 \ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ + __DRIdrawablePrivate *dPriv = mmesa->mesa_drawable; \ + 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 \ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); \ + __DRIdrawablePrivate *dPriv = mmesa->mesa_drawable; \ + 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 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 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" + + + +/* + * This function is called to specify which buffer to read and write + * for software rasterization (swrast) fallbacks. This doesn't necessarily + * correspond to glDrawBuffer() or glReadBuffer() calls. + */ +static void mgaDDSetBuffer(GLcontext *ctx, GLframebuffer *buffer, + GLuint bufferBit) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + unsigned int offset; + + assert((bufferBit == BUFFER_BIT_FRONT_LEFT) || (bufferBit == BUFFER_BIT_BACK_LEFT)); + + offset = (bufferBit == BUFFER_BIT_FRONT_LEFT) + ? mmesa->mgaScreen->frontOffset + : mmesa->mgaScreen->backOffset; + + mmesa->drawOffset = offset; + mmesa->readOffset = offset; + + assert( (buffer == mmesa->driDrawable->driverPrivate) + || (buffer == mmesa->driReadable->driverPrivate) ); + + mmesa->mesa_drawable = (buffer == mmesa->driDrawable->driverPrivate) + ? mmesa->driDrawable : mmesa->driReadable; +} + +void mgaSpanRenderStart( GLcontext *ctx ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + FLUSH_BATCH( mmesa ); + LOCK_HARDWARE_QUIESCENT( mmesa ); +} + +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 ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx); + + swdd->SetBuffer = mgaDDSetBuffer; + + switch (mmesa->mgaScreen->cpp) { + case 2: +#if 0 + mgaInitPointers_565( swdd ); + swdd->ReadDepthSpan = mgaReadDepthSpan_16; + swdd->WriteDepthSpan = mgaWriteDepthSpan_16; + swdd->ReadDepthPixels = mgaReadDepthPixels_16; + swdd->WriteDepthPixels = mgaWriteDepthPixels_16; +#endif + break; + + case 4: +#if 0 + mgaInitPointers_8888( swdd ); + + 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; + } +#endif + break; + } + 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.InternalFormat == GL_RGBA) { + if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) { + mgaInitPointers_565(&drb->Base); + } + else { + mgaInitPointers_8888(&drb->Base); + } + } + else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) { + drb->Base.GetRow = mgaReadDepthSpan_16; + drb->Base.GetValues = mgaReadDepthPixels_16; + drb->Base.PutRow = mgaWriteDepthSpan_16; + drb->Base.PutMonoRow = mgaWriteMonoDepthSpan_16; + drb->Base.PutValues = mgaWriteDepthPixels_16; + drb->Base.PutMonoValues = NULL; + } + else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) { + drb->Base.GetRow = mgaReadDepthSpan_24_8; + drb->Base.GetValues = mgaReadDepthPixels_24_8; + drb->Base.PutRow = mgaWriteDepthSpan_24_8; + drb->Base.PutMonoRow = mgaWriteMonoDepthSpan_24_8; + drb->Base.PutValues = mgaWriteDepthPixels_24_8; + drb->Base.PutMonoValues = NULL; + } + else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT32) { + drb->Base.GetRow = mgaReadDepthSpan_32; + drb->Base.GetValues = mgaReadDepthPixels_32; + drb->Base.PutRow = mgaWriteDepthSpan_32; + drb->Base.PutMonoRow = mgaWriteMonoDepthSpan_32; + drb->Base.PutValues = mgaWriteDepthPixels_32; + drb->Base.PutMonoValues = NULL; + } + else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) { + drb->Base.GetRow = mgaReadStencilSpan_24_8; + drb->Base.GetValues = mgaReadStencilPixels_24_8; + drb->Base.PutRow = mgaWriteStencilSpan_24_8; + drb->Base.PutMonoRow = mgaWriteMonoStencilSpan_24_8; + drb->Base.PutValues = mgaWriteStencilPixels_24_8; + drb->Base.PutMonoValues = NULL; + } +} |