aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c')
-rw-r--r--nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c
new file mode 100644
index 000000000..18743331c
--- /dev/null
+++ b/nx-X11/extras/Mesa/src/mesa/drivers/dri/mga/mgatexmem.c
@@ -0,0 +1,278 @@
+/*
+ * 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/mgatexmem.c,v 1.7 2002/10/30 12:51:36 alanh Exp $ */
+
+#include "glheader.h"
+
+#include "mm.h"
+#include "mgacontext.h"
+#include "mgatex.h"
+#include "mgaregs.h"
+#include "mgaioctl.h"
+#include "mga_xmesa.h"
+
+#include "imports.h"
+#include "simple_list.h"
+
+/**
+ * Destroy any device-dependent state associated with the texture. This may
+ * include NULLing out hardware state that points to the texture.
+ */
+void
+mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+ unsigned i;
+
+
+ /* See if it was the driver's current object.
+ */
+
+ if ( mmesa != NULL )
+ {
+ if ( t->age > mmesa->dirtyAge )
+ mmesa->dirtyAge = t->age;
+
+ for ( i = 0 ; i < mmesa->glCtx->Const.MaxTextureUnits ; i++ )
+ {
+ if ( t == mmesa->CurrentTexObj[ i ] ) {
+ mmesa->CurrentTexObj[ i ] = NULL;
+ }
+ }
+ }
+}
+
+
+/**
+ * Upload a texture image from system memory to either on-card or AGP
+ * memory. Uploads to on-card memory are performed using an ILOAD operation.
+ * This is used for both initial loading of the entire image, and texSubImage
+ * updates.
+ *
+ * Performed with the hardware lock held.
+ *
+ * Even though this function is named "upload subimage," the entire image
+ * is uploaded.
+ *
+ * \param mmesa Driver context.
+ * \param t Texture to be uploaded.
+ * \param hwlevel Mipmap level of the texture to be uploaded.
+ *
+ * \bug As mentioned above, this fuction actually copies the entier mipmap
+ * level. There should be a version of this function that performs
+ * sub-rectangle uploads. This will perform quite a bit better if only
+ * a small portion of a larger texture has been updated. Care would
+ * need to be take with such an implementation once glCopyTexImage has
+ * been hardware accelerated.
+ */
+static void mgaUploadSubImage( mgaContextPtr mmesa,
+ mgaTextureObjectPtr t, GLint hwlevel )
+{
+ struct gl_texture_image * texImage;
+ unsigned offset;
+ unsigned texelBytes;
+ unsigned length;
+ const int level = hwlevel + t->base.firstLevel;
+
+
+ if ( (hwlevel < 0)
+ || (hwlevel >= (MGA_IS_G200(mmesa)
+ ? G200_TEX_MAXLEVELS : G400_TEX_MAXLEVELS)) ) {
+ fprintf( stderr, "[%s:%d] level = %d\n", __FILE__, __LINE__, level );
+ return;
+ }
+
+ texImage = t->base.tObj->Image[0][level];
+ if ( texImage == NULL ) {
+ fprintf( stderr, "[%s:%d] Image[%d] = NULL\n", __FILE__, __LINE__,
+ level );
+ return;
+ }
+
+
+ if (texImage->Data == NULL) {
+ fprintf(stderr, "null texture image data tObj %p level %d\n",
+ (void *) t->base.tObj, level);
+ return;
+ }
+
+
+ /* find the proper destination offset for this level */
+ if ( MGA_IS_G200(mmesa) ) {
+ offset = (t->base.memBlock->ofs + t->offsets[hwlevel]);
+ }
+ else {
+ unsigned i;
+
+ offset = t->base.memBlock->ofs;
+ for ( i = 0 ; i < hwlevel ; i++ ) {
+ offset += (t->offsets[1] >> (i * 2));
+ }
+ }
+
+
+ /* Copy the texture from system memory to a memory space that can be
+ * directly used by the hardware for texturing.
+ */
+
+ texelBytes = texImage->TexFormat->TexelBytes;
+ length = texImage->Width * texImage->Height * texelBytes;
+ if ( t->base.heap->heapId == MGA_CARD_HEAP ) {
+ unsigned tex_offset = 0;
+ unsigned to_copy;
+
+
+ /* We may not be able to upload the entire texture in one batch due to
+ * register limits or dma buffer limits. Split the copy up into maximum
+ * sized chunks.
+ */
+
+ offset += mmesa->mgaScreen->textureOffset[ t->base.heap->heapId ];
+ while ( length != 0 ) {
+ mgaGetILoadBufferLocked( mmesa );
+
+ /* The kernel ILOAD ioctl requires that the lenght be an even multiple
+ * of MGA_ILOAD_ALIGN.
+ */
+ length = ((length) + MGA_ILOAD_MASK) & ~MGA_ILOAD_MASK;
+
+ to_copy = MIN2( length, MGA_BUFFER_SIZE );
+ (void) memcpy( mmesa->iload_buffer->address,
+ (GLubyte *) texImage->Data + tex_offset, to_copy );
+
+ if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
+ fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
+ __FILE__, __LINE__,
+ (long) (offset + tex_offset),
+ to_copy );
+
+ mgaFireILoadLocked( mmesa, offset + tex_offset, to_copy );
+ tex_offset += to_copy;
+ length -= to_copy;
+ }
+ } else {
+ /* FIXME: the sync for direct copy reduces speed.. */
+ /* This works, is slower for uploads to card space and needs
+ * additional synchronization with the dma stream.
+ */
+
+ UPDATE_LOCK(mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT);
+
+ memcpy( mmesa->mgaScreen->texVirtual[t->base.heap->heapId] + offset,
+ texImage->Data, length );
+
+ if ( MGA_DEBUG & DEBUG_VERBOSE_TEXTURE )
+ fprintf(stderr, "[%s:%d] address/size = 0x%08lx/%d\n",
+ __FILE__, __LINE__,
+ (long) (mmesa->mgaScreen->texVirtual[t->base.heap->heapId]
+ + offset),
+ length);
+ }
+}
+
+
+/**
+ * Upload the texture images associated with texture \a t. This might
+ * require the allocation of texture memory.
+ *
+ * \param mmesa Context pointer
+ * \param t Texture to be uploaded
+ */
+
+int mgaUploadTexImages( mgaContextPtr mmesa, mgaTextureObjectPtr t )
+{
+ int i;
+ int ofs;
+
+
+ if ( (t == NULL) || (t->base.totalSize == 0) )
+ return 0;
+
+ LOCK_HARDWARE( mmesa );
+
+ if (t->base.memBlock == NULL ) {
+ int heap;
+
+ heap = driAllocateTexture( mmesa->texture_heaps, mmesa->nr_heaps,
+ (driTextureObject *) t );
+ if ( heap == -1 ) {
+ UNLOCK_HARDWARE( mmesa );
+ return -1;
+ }
+
+ ofs = mmesa->mgaScreen->textureOffset[ heap ]
+ + t->base.memBlock->ofs;
+
+ if ( MGA_IS_G200(mmesa) ) {
+ t->setup.texorg = ofs;
+ t->setup.texorg1 = ofs + t->offsets[1];
+ t->setup.texorg2 = ofs + t->offsets[2];
+ t->setup.texorg3 = ofs + t->offsets[3];
+ t->setup.texorg4 = ofs + t->offsets[4];
+ }
+ else {
+ t->setup.texorg = ofs | TO_texorgoffsetsel;
+ t->setup.texorg1 = t->offsets[1];
+ t->setup.texorg2 = 0;
+ t->setup.texorg3 = 0;
+ t->setup.texorg4 = 0;
+ }
+
+ mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+ }
+
+ /* Let the world know we've used this memory recently.
+ */
+ driUpdateTextureLRU( (driTextureObject *) t );
+
+ if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
+ fprintf(stderr, "[%s:%d] dispatch age: %d age freed memory: %d\n",
+ __FILE__, __LINE__,
+ GET_DISPATCH_AGE(mmesa), mmesa->dirtyAge);
+
+ if (mmesa->dirtyAge >= GET_DISPATCH_AGE(mmesa))
+ mgaWaitAgeLocked( mmesa, mmesa->dirtyAge );
+
+ if (t->base.dirty_images[0]) {
+ const int numLevels = t->base.lastLevel - t->base.firstLevel + 1;
+
+ if (MGA_DEBUG&DEBUG_VERBOSE_TEXTURE)
+ fprintf(stderr, "[%s:%d] dirty_images[0] = 0x%04x\n",
+ __FILE__, __LINE__, t->base.dirty_images[0] );
+
+ for (i = 0 ; i < numLevels ; i++) {
+ if ( (t->base.dirty_images[0] & (1U << i)) != 0 ) {
+ mgaUploadSubImage( mmesa, t, i );
+ }
+ }
+ t->base.dirty_images[0] = 0;
+ }
+
+
+ UNLOCK_HARDWARE( mmesa );
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 06:44:09 +0000