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/*
* GLX Hardware Device Driver for Intel i810
* Copyright (C) 1999 Keith Whitwell
* Texmem interface changes (C) 2003 Dave Airlie
*
* 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
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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.
*
*/
#include "main/glheader.h"
#include "main/macros.h"
#include "main/mtypes.h"
#include "main/simple_list.h"
#include "main/enums.h"
#include "main/colormac.h"
#include "main/mm.h"
#include "i810screen.h"
#include "i810_dri.h"
#include "i810context.h"
#include "i810tex.h"
#include "i810ioctl.h"
void i810DestroyTexObj(i810ContextPtr imesa, i810TextureObjectPtr t)
{
/* See if it was the driver's current object.
*/
if ( imesa != NULL ) {
if (imesa->CurrentTexObj[0] == t) {
imesa->CurrentTexObj[0] = 0;
imesa->dirty &= ~I810_UPLOAD_TEX0;
}
if (imesa->CurrentTexObj[1] == t) {
imesa->CurrentTexObj[1] = 0;
imesa->dirty &= ~I810_UPLOAD_TEX1;
}
}
}
#if defined(i386) || defined(__i386__)
/* From linux kernel i386 header files, copes with odd sizes better
* than COPY_DWORDS would:
*/
static INLINE void * __memcpy(void * to, const void * from, size_t n)
{
int d0, d1, d2;
__asm__ __volatile__(
"rep ; movsl\n\t"
"testb $2,%b4\n\t"
"je 1f\n\t"
"movsw\n"
"1:\ttestb $1,%b4\n\t"
"je 2f\n\t"
"movsb\n"
"2:"
: "=&c" (d0), "=&D" (d1), "=&S" (d2)
:"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
: "memory");
return (to);
}
#else
/* Allow compilation on other architectures */
#define __memcpy memcpy
#endif
/* Upload an image from mesa's internal copy.
*/
static void i810UploadTexLevel( i810ContextPtr imesa,
i810TextureObjectPtr t, int hwlevel )
{
const struct gl_texture_image *image = t->image[hwlevel].image;
int j;
GLuint texelBytes;
if (!image || !image->Data)
return;
texelBytes = _mesa_get_format_bytes(image->TexFormat);
if (image->Width * texelBytes == t->Pitch) {
GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[hwlevel].offset);
GLubyte *src = (GLubyte *)image->Data;
memcpy( dst, src, t->Pitch * image->Height );
}
else {
switch (texelBytes) {
case 1:
{
GLubyte *dst = (GLubyte *)(t->BufAddr + t->image[hwlevel].offset);
GLubyte *src = (GLubyte *)image->Data;
for (j = 0 ; j < image->Height ; j++, dst += t->Pitch) {
__memcpy(dst, src, image->Width );
src += image->Width;
}
}
break;
case 2:
{
GLushort *dst = (GLushort *)(t->BufAddr + t->image[hwlevel].offset);
GLushort *src = (GLushort *)image->Data;
for (j = 0 ; j < image->Height ; j++, dst += (t->Pitch/2)) {
__memcpy(dst, src, image->Width * 2 );
src += image->Width;
}
}
break;
default:
fprintf(stderr, "%s: Not supported texel size %d\n",
__FUNCTION__, texelBytes);
}
}
}
/* This is called with the lock held. May have to eject our own and/or
* other client's texture objects to make room for the upload.
*/
int i810UploadTexImagesLocked( i810ContextPtr imesa, i810TextureObjectPtr t )
{
int i;
int ofs;
int numLevels;
/* Do we need to eject LRU texture objects?
*/
if (!t->base.memBlock) {
int heap;
heap = driAllocateTexture( imesa->texture_heaps, imesa->nr_heaps,
(driTextureObject *) t);
if ( heap == -1 ) {
return -1;
}
assert(t->base.memBlock);
ofs = t->base.memBlock->ofs;
t->BufAddr = imesa->i810Screen->tex.map + ofs;
t->Setup[I810_TEXREG_MI3] = imesa->i810Screen->textureOffset + ofs;
if (t == imesa->CurrentTexObj[0])
I810_STATECHANGE(imesa, I810_UPLOAD_TEX0);
if (t == imesa->CurrentTexObj[1])
I810_STATECHANGE(imesa, I810_UPLOAD_TEX1);
/* i810UpdateTexLRU( imesa, t );*/
}
driUpdateTextureLRU( (driTextureObject *) t );
if (imesa->texture_heaps[0]->timestamp >= GET_DISPATCH_AGE(imesa))
i810WaitAgeLocked( imesa, imesa->texture_heaps[0]->timestamp );
numLevels = t->base.lastLevel - t->base.firstLevel + 1;
for (i = 0 ; i < numLevels ; i++)
if (t->base.dirty_images[0] & (1<<i))
i810UploadTexLevel( imesa, t, i );
t->base.dirty_images[0] = 0;
return 0;
}
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