On Mon, 2009-06-01 at 16:39 +0200, Maciej Cencora wrote:
> Dnia poniedziałek, 1 czerwca 2009 o 14:25:57 Maciej Cencora napisał(a):
> > Dnia poniedziałek, 1 czerwca 2009 o 12:44:20 Michel Dänzer napisał(a):
> > > On Sat, 2009-05-30 at 21:00 +0200, Maciej Cencora wrote:
> > > > Hi,
> > > >
> > > > this round of patches for r300 brings:
> > > > 1) hardware accelerated support for 8bit and 16bit vertex attribute
> > > > data formats,
> > > > 2) support for 16bit vertex indices,
> > > > 3) support for EXT_vertex_array_bgra extension,
> > > > 4) T&L path cleanup. it's used when hardware TCL is enabled, but we
> > > > have to fallback for software TCL - clipping is still done in hardware
> > > > unlike in software TCL path.
> > > >
> > > > Those patches are unfinished, to be done:
> > > > 1) unmap bo's after rendering is finished
> > > > Currently the map/unmap functions are noop so it's working ok, but when
> > > > we will add support for VBO's it won't work.
> > > >
> > > > 2) handle big endian machines correctly
> > > > Is this really an issue?
> > >
> > > The driver certainly used to have special code for non-32-bit elts on
> > > big endian. How can I test this on my PowerBook?
> >
> > Hmm, since vbo branch merge all elts are always 32bit. I've looked a little
> > at the code before the merge and I couldn't find any big endian specific
> > code for elt handling, but maybe I just haven't looked hard enough.
> >
> > mesa/progs/trivial/draw2arrays is using unsigned bytes as indexes, change
> > it to unsigned shorts and check if the rendering is correct.
>
> I meant mesa/progs/trivial/drawrange
Patch 4 indeed breaks that on my PowerBook. The patch below is a minimal
fix. Not sure why the #if 0'd code to just swap short indices doesn't
work...
commit b7315145e0fe40a5de3846bff8f1874199c52e58
Author: Michel Dänzer <daen...@vmware.com>
Date: Tue Jun 2 20:14:09 2009 +0200
r300: Endianness fixes for recent vertex path changes.
diff --git a/src/mesa/drivers/dri/r300/r300_draw.c
b/src/mesa/drivers/dri/r300/r300_draw.c
index bb85d63..341c952 100644
--- a/src/mesa/drivers/dri/r300/r300_draw.c
+++ b/src/mesa/drivers/dri/r300/r300_draw.c
@@ -80,9 +80,36 @@ static void r300FixupIndexBuffer(GLcontext *ctx, const
struct _mesa_index_buffer
ind_buf->free_needed = GL_TRUE;
ind_buf->is_32bit = GL_TRUE;
} else if (mesa_ind_buf->type == GL_UNSIGNED_SHORT) {
+#if MESA_BIG_ENDIAN
+ GLushort *in = (GLushort *)src_ptr;
+ GLuint *out = _mesa_malloc(sizeof(GLushort) *
+ ((mesa_ind_buf->count + 1) & ~1));
+ int i;
+#if 0
+ for (i = 0; i + 1 < mesa_ind_buf->count; i += 2) {
+ out[i / 2] = in[i] | in[i + 1] << 16;
+ }
+
+ if (i < mesa_ind_buf->count) {
+ out[i / 2] = in[i];
+ }
+
+ ind_buf->is_32bit = GL_FALSE;
+#else
+ for (i = 0; i < mesa_ind_buf->count; ++i) {
+ out[i] = (GLuint) in[i];
+ }
+
+ ind_buf->is_32bit = GL_TRUE;
+#endif
+
+ ind_buf->ptr = out;
+ ind_buf->free_needed = GL_TRUE;
+#else
ind_buf->ptr = src_ptr;
ind_buf->free_needed = GL_FALSE;
ind_buf->is_32bit = GL_FALSE;
+#endif
} else {
ind_buf->ptr = src_ptr;
ind_buf->free_needed = GL_FALSE;
@@ -157,7 +184,11 @@ static void r300TranslateAttrib(GLcontext *ctx, GLuint
attr, int count, const st
} else
src_ptr = input->Ptr;
- if (input->Type == GL_DOUBLE || ((getTypeSize(input->Type) *
input->Size) % 4 > 0)) {
+ if (input->Type == GL_DOUBLE ||
+#if MESA_BIG_ENDIAN
+ getTypeSize(input->Type) != 4 ||
+#endif
+ ((getTypeSize(input->Type) * input->Size) % 4 > 0)) {
if (RADEON_DEBUG & DEBUG_FALLBACKS) {
fprintf(stderr, "%s: Converting vertex attributes,
attribute data format %x,", __FUNCTION__, input->Type);
fprintf(stderr, "stride %d, components %d\n",
input->StrideB, input->Size);
--
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
------------------------------------------------------------------------------
OpenSolaris 2009.06 is a cutting edge operating system for enterprises
looking to deploy the next generation of Solaris that includes the latest
innovations from Sun and the OpenSource community. Download a copy and
enjoy capabilities such as Networking, Storage and Virtualization.
Go to: http://p.sf.net/sfu/opensolaris-get
_______________________________________________
Mesa3d-dev mailing list
Mesa3d-dev@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
