static const GLubyte *mgaGetString( GLcontext *ctx, GLenum name )
{
mgaContextPtr mmesa = MGA_CONTEXT( ctx );
static char buffer[128];
unsigned offset;
switch ( name ) {
case GL_VENDOR:
return (GLubyte *) "VA Linux Systems Inc.";
case GL_RENDERER:
offset = driGetRendererString( buffer,
MGA_IS_G400(mmesa) ? "G400" :
MGA_IS_G200(mmesa) ? "G200" : "MGA",
DRIVER_DATE,
mmesa->mgaScreen->agpMode );
return (GLubyte *)buffer;
default:
return 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 = _mesa_get_format_bytes(texImage->TexFormat);
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);
}
}
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;
}