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path: root/src/mesa/drivers/dri/intel/intel_tex.c
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Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_tex.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_tex.c249
1 files changed, 249 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 00000000000..82f8b870095
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_tex.c
@@ -0,0 +1,249 @@
+#include "swrast/swrast.h"
+#include "main/texobj.h"
+#include "main/teximage.h"
+#include "main/mipmap.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) src) & 63) || (((unsigned) 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))
+ _mesa_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;
+ _mesa_printf("timed_memcpy: %u %u --> %f clocks/byte\n", t1, t2, rate);
+ return ret;
+}
+#endif /* DO_DEBUG */
+
+/**
+ * Generate new mipmap data from BASE+1 to BASE+p (the minimally-sized mipmap
+ * level).
+ *
+ * The texture object's miptree must be mapped.
+ *
+ * It would be really nice if this was just called by Mesa whenever mipmaps
+ * needed to be regenerated, rather than us having to remember to do so in
+ * each texture image modification path.
+ *
+ * This function should also include an accelerated path.
+ */
+void
+intel_generate_mipmap(GLcontext *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ struct intel_context *intel = intel_context(ctx);
+ struct intel_texture_object *intelObj = intel_texture_object(texObj);
+ GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+ int face, i;
+
+ _mesa_generate_mipmap(ctx, target, texObj);
+
+ /* 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;
+
+ intelImage = intel_texture_image(texObj->Image[face][i]);
+ if (intelImage == NULL)
+ 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);
+ }
+ }
+}
+
+static void intelGenerateMipmap(GLcontext *ctx, GLenum target, struct gl_texture_object *texObj)
+{
+ 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);
+ intel_generate_mipmap(ctx, target, texObj);
+ intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
+}
+
+void
+intelInitTextureFuncs(struct dd_function_table *functions)
+{
+ functions->ChooseTextureFormat = intelChooseTextureFormat;
+ functions->TexImage1D = intelTexImage1D;
+ functions->TexImage2D = intelTexImage2D;
+ functions->TexImage3D = intelTexImage3D;
+ functions->TexSubImage1D = intelTexSubImage1D;
+ functions->TexSubImage2D = intelTexSubImage2D;
+ functions->TexSubImage3D = intelTexSubImage3D;
+ functions->CopyTexImage1D = intelCopyTexImage1D;
+ functions->CopyTexImage2D = intelCopyTexImage2D;
+ functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
+ functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
+ functions->GetTexImage = intelGetTexImage;
+ functions->GenerateMipmap = intelGenerateMipmap;
+
+ /* compressed texture functions */
+ functions->CompressedTexImage2D = intelCompressedTexImage2D;
+ functions->GetCompressedTexImage = intelGetCompressedTexImage;
+
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-23 23:15:55 +0000