diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_tex.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_tex.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_tex.c b/src/mesa/drivers/dri/intel/intel_tex.c new file mode 100644 index 0000000000..8bb6ae99fb --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_tex.c @@ -0,0 +1,228 @@ +#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 GLboolean +intelIsTextureResident(GLcontext * ctx, struct gl_texture_object *texObj) +{ +#if 0 + struct intel_context *intel = intel_context(ctx); + struct intel_texture_object *intelObj = intel_texture_object(texObj); + + return + intelObj->mt && + intelObj->mt->region && + intel_is_region_resident(intel, intelObj->mt->region); +#endif + return 1; +} + + + +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); + 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; + functions->UpdateTexturePalette = 0; + functions->IsTextureResident = intelIsTextureResident; + +#if DO_DEBUG && !defined(__ia64__) + if (INTEL_DEBUG & DEBUG_BUFMGR) + functions->TextureMemCpy = timed_memcpy; + else +#endif + functions->TextureMemCpy = do_memcpy; +} |