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* Copyright 2000-2001 VA Linux Systems, Inc.
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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* Keith Whitwell <keith@tungstengraphics.com>
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/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgatexmem.c,v 1.7 2002/10/30 12:51:36 alanh Exp $ */
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#include "mgacontext.h"
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#include "mga_xmesa.h"
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#include "simple_list.h"
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* Destroy any device-dependent state associated with the texture. This may
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* include NULLing out hardware state that points to the texture.
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mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t )
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/* See if it was the driver's current object.
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if ( t->age > mmesa->dirtyAge )
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mmesa->dirtyAge = t->age;
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for ( i = 0 ; i < mmesa->glCtx->Const.MaxTextureUnits ; i++ )
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if ( t == mmesa->CurrentTexObj[ i ] ) {
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mmesa->CurrentTexObj[ i ] = NULL;
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* Upload a texture image from system memory to either on-card or AGP
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* memory. Uploads to on-card memory are performed using an ILOAD operation.
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* This is used for both initial loading of the entire image, and texSubImage
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* Performed with the hardware lock held.
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* Even though this function is named "upload subimage," the entire image
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* \param mmesa Driver context.
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* \param t Texture to be uploaded.
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* \param hwlevel Mipmap level of the texture to be uploaded.
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* \bug As mentioned above, this fuction actually copies the entier mipmap
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* level. There should be a version of this function that performs
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* sub-rectangle uploads. This will perform quite a bit better if only
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* a small portion of a larger texture has been updated. Care would
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* need to be take with such an implementation once glCopyTexImage has
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* been hardware accelerated.
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static void mgaUploadSubImage( mgaContextPtr mmesa,
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mgaTextureObjectPtr t, GLint hwlevel )
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struct gl_texture_image * texImage;
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const int level = hwlevel + t->base.firstLevel;
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|| (hwlevel >= (MGA_IS_G200(mmesa)
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? G200_TEX_MAXLEVELS : G400_TEX_MAXLEVELS)) ) {
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fprintf( stderr, "[%s:%d] level = %d\n", __FILE__, __LINE__, level );
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texImage = t->base.tObj->Image[0][level];
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if ( texImage == NULL ) {
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fprintf( stderr, "[%s:%d] Image[%d] = NULL\n", __FILE__, __LINE__,
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if (texImage->Data == NULL) {
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fprintf(stderr, "null texture image data tObj %p level %d\n",
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(void *) t->base.tObj, level);
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/* find the proper destination offset for this level */
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if ( MGA_IS_G200(mmesa) ) {
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offset = (t->base.memBlock->ofs + t->offsets[hwlevel]);
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offset = t->base.memBlock->ofs;
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for ( i = 0 ; i < hwlevel ; i++ ) {
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offset += (t->offsets[1] >> (i * 2));
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/* Copy the texture from system memory to a memory space that can be
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* directly used by the hardware for texturing.
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texelBytes = texImage->TexFormat->TexelBytes;
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length = texImage->Width * texImage->Height * texelBytes;
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if ( t->base.heap->heapId == MGA_CARD_HEAP ) {
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unsigned tex_offset = 0;
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/* We may not be able to upload the entire texture in one batch due to
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* register limits or dma buffer limits. Split the copy up into maximum
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offset += mmesa->mgaScreen->textureOffset[ t->base.heap->heapId ];
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while ( length != 0 ) {
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mgaGetILoadBufferLocked( mmesa );
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/* The kernel ILOAD ioctl requires that the lenght be an even multiple
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* of MGA_ILOAD_ALIGN.
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length = ((length) + MGA_ILOAD_MASK) & ~MGA_ILOAD_MASK;
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to_copy = MIN2( length, MGA_BUFFER_SIZE );
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(void) memcpy( mmesa->iload_buffer->address,
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(GLubyte *) texImage->Data + tex_offset, to_copy );
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if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
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fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
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(long) (offset + tex_offset),
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mgaFireILoadLocked( mmesa, offset + tex_offset, to_copy );
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tex_offset += to_copy;
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/* FIXME: the sync for direct copy reduces speed.. */
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/* This works, is slower for uploads to card space and needs
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* additional synchronization with the dma stream.
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UPDATE_LOCK(mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT);
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memcpy( mmesa->mgaScreen->texVirtual[t->base.heap->heapId] + offset,
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texImage->Data, length );
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if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
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fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
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(long) (mmesa->mgaScreen->texVirtual[t->base.heap->heapId]
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* Upload the texture images associated with texture \a t. This might
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* require the allocation of texture memory.
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* \param mmesa Context pointer
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* \param t Texture to be uploaded
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int mgaUploadTexImages( mgaContextPtr mmesa, mgaTextureObjectPtr t )
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if ( (t == NULL) || (t->base.totalSize == 0) )
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LOCK_HARDWARE( mmesa );
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if (t->base.memBlock == NULL ) {
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heap = driAllocateTexture( mmesa->texture_heaps, mmesa->nr_heaps,
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(driTextureObject *) t );
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UNLOCK_HARDWARE( mmesa );
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ofs = mmesa->mgaScreen->textureOffset[ heap ]
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+ t->base.memBlock->ofs;
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if ( MGA_IS_G200(mmesa) ) {
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t->setup.texorg = ofs;
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t->setup.texorg1 = ofs + t->offsets[1];
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t->setup.texorg2 = ofs + t->offsets[2];
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t->setup.texorg3 = ofs + t->offsets[3];
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t->setup.texorg4 = ofs + t->offsets[4];
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t->setup.texorg = ofs | TO_texorgoffsetsel;
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t->setup.texorg1 = t->offsets[1];
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t->setup.texorg2 = 0;
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t->setup.texorg3 = 0;
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t->setup.texorg4 = 0;
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mmesa->dirty |= MGA_UPLOAD_CONTEXT;
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/* Let the world know we've used this memory recently.
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driUpdateTextureLRU( (driTextureObject *) t );
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if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
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fprintf(stderr, "[%s:%d] dispatch age: %d age freed memory: %d\n",
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GET_DISPATCH_AGE(mmesa), mmesa->dirtyAge);
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if (mmesa->dirtyAge >= GET_DISPATCH_AGE(mmesa))
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mgaWaitAgeLocked( mmesa, mmesa->dirtyAge );
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if (t->base.dirty_images[0]) {
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const int numLevels = t->base.lastLevel - t->base.firstLevel + 1;
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if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
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fprintf(stderr, "[%s:%d] dirty_images[0] = 0x%04x\n",
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__FILE__, __LINE__, t->base.dirty_images[0] );
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for (i = 0 ; i < numLevels ; i++) {
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if ( (t->base.dirty_images[0] & (1U << i)) != 0 ) {
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mgaUploadSubImage( mmesa, t, i );
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t->base.dirty_images[0] = 0;
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UNLOCK_HARDWARE( mmesa );