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#include "swrast/swrast.h"
#include "main/texobj.h"
#include "main/teximage.h"
#include "main/mipmap.h"
#include "drivers/common/meta.h"
#include "intel_context.h"
#include "intel_mipmap_tree.h"
#include "intel_tex.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
static struct gl_texture_image *
intelNewTextureImage(GLcontext * ctx)
{
DBG("%s\n", __FUNCTION__);
(void) ctx;
return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
}
static struct gl_texture_object *
intelNewTextureObject(GLcontext * ctx, GLuint name, GLenum target)
{
struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
DBG("%s\n", __FUNCTION__);
_mesa_initialize_texture_object(&obj->base, name, target);
return &obj->base;
}
static void
intelDeleteTextureObject(GLcontext *ctx,
struct gl_texture_object *texObj)
{
struct intel_context *intel = intel_context(ctx);
struct intel_texture_object *intelObj = intel_texture_object(texObj);
if (intelObj->mt)
intel_miptree_release(intel, &intelObj->mt);
_mesa_delete_texture_object(ctx, texObj);
}
static void
intelFreeTextureImageData(GLcontext * ctx, struct gl_texture_image *texImage)
{
struct intel_context *intel = intel_context(ctx);
struct intel_texture_image *intelImage = intel_texture_image(texImage);
DBG("%s\n", __FUNCTION__);
if (intelImage->mt) {
intel_miptree_release(intel, &intelImage->mt);
}
if (texImage->Data) {
_mesa_free_texmemory(texImage->Data);
texImage->Data = NULL;
}
}
/* The system memcpy (at least on ubuntu 5.10) has problems copying
* to agp (writecombined) memory from a source which isn't 64-byte
* aligned - there is a 4x performance falloff.
*
* The x86 __memcpy is immune to this but is slightly slower
* (10%-ish) than the system memcpy.
*
* The sse_memcpy seems to have a slight cliff at 64/32 bytes, but
* isn't much faster than x86_memcpy for agp copies.
*
* TODO: switch dynamically.
*/
static void *
do_memcpy(void *dest, const void *src, size_t n)
{
if ((((unsigned long) src) & 63) || (((unsigned long) dest) & 63)) {
return __memcpy(dest, src, n);
}
else
return memcpy(dest, src, n);
}
#if DO_DEBUG && !defined(__ia64__)
#ifndef __x86_64__
static unsigned
fastrdtsc(void)
{
unsigned eax;
__asm__ volatile ("\t"
"pushl %%ebx\n\t"
"cpuid\n\t" ".byte 0x0f, 0x31\n\t"
"popl %%ebx\n":"=a" (eax)
:"0"(0)
:"ecx", "edx", "cc");
return eax;
}
#else
static unsigned
fastrdtsc(void)
{
unsigned eax;
__asm__ volatile ("\t" "cpuid\n\t" ".byte 0x0f, 0x31\n\t":"=a" (eax)
:"0"(0)
:"ecx", "edx", "ebx", "cc");
return eax;
}
#endif
static unsigned
time_diff(unsigned t, unsigned t2)
{
return ((t < t2) ? t2 - t : 0xFFFFFFFFU - (t - t2 - 1));
}
static void *
timed_memcpy(void *dest, const void *src, size_t n)
{
void *ret;
unsigned t1, t2;
double rate;
if ((((unsigned) src) & 63) || (((unsigned) dest) & 63))
printf("Warning - non-aligned texture copy!\n");
t1 = fastrdtsc();
ret = do_memcpy(dest, src, n);
t2 = fastrdtsc();
rate = time_diff(t1, t2);
rate /= (double) n;
printf("timed_memcpy: %u %u --> %f clocks/byte\n", t1, t2, rate);
return ret;
}
#endif /* DO_DEBUG */
/**
* Called via ctx->Driver.GenerateMipmap()
* This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
* if we'll be using software mipmap generation. In that case, we need to
* map/unmap the base level texture image.
*/
static void
intelGenerateMipmap(GLcontext *ctx, GLenum target,
struct gl_texture_object *texObj)
{
if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
/* sw path: need to map texture images */
struct intel_context *intel = intel_context(ctx);
struct intel_texture_object *intelObj = intel_texture_object(texObj);
if (INTEL_DEBUG & DEBUG_FALLBACKS)
fprintf(stderr, "%s - fallback to swrast\n", __FUNCTION__);
intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
_mesa_generate_mipmap(ctx, target, texObj);
intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
{
GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
GLuint face, i;
/* Update the level information in our private data in the new images,
* since it didn't get set as part of a normal TexImage path.
*/
for (face = 0; face < nr_faces; face++) {
for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
struct intel_texture_image *intelImage =
intel_texture_image(texObj->Image[face][i]);
if (!intelImage)
break;
intelImage->level = i;
intelImage->face = face;
/* Unreference the miptree to signal that the new Data is a
* bare pointer from mesa.
*/
intel_miptree_release(intel, &intelImage->mt);
}
}
}
}
else {
_mesa_meta_GenerateMipmap(ctx, target, texObj);
}
}
void
intelInitTextureFuncs(struct dd_function_table *functions)
{
functions->ChooseTextureFormat = intelChooseTextureFormat;
functions->GenerateMipmap = intelGenerateMipmap;
functions->NewTextureObject = intelNewTextureObject;
functions->NewTextureImage = intelNewTextureImage;
functions->DeleteTexture = intelDeleteTextureObject;
functions->FreeTexImageData = intelFreeTextureImageData;
#if DO_DEBUG && !defined(__ia64__)
if (INTEL_DEBUG & DEBUG_BUFMGR)
functions->TextureMemCpy = timed_memcpy;
else
#endif
functions->TextureMemCpy = do_memcpy;
}
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