/* * 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 \ 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; } }