From: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
---
src/mesa/tnl/t_vertex.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
src/mesa/tnl/t_vertex.h | 6 ++++++
2 files changed, 50 insertions(+), 1 deletions(-)
diff --git a/src/mesa/tnl/t_vertex.c b/src/mesa/tnl/t_vertex.c
index b661524..165b001 100644
--- a/src/mesa/tnl/t_vertex.c
+++ b/src/mesa/tnl/t_vertex.c
@@ -376,6 +376,22 @@ void _tnl_notify_pipeline_output_change( GLcontext *ctx )
invalidate_funcs(vtx);
}
+
+static void adjust_input_ptrs( GLcontext *ctx, GLint diff)
+{
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ struct tnl_clipspace_attr *a = vtx->attr;
+ const GLuint count = vtx->attr_count;
+ int j;
+
+ diff -= 1;
+ for (j=0; j<count; ++j) {
+ register GLvector4f *vptr = VB->AttribPtr[a->attrib];
+ (a++)->inputptr += diff*vptr->stride;
+ }
+}
+
static void update_input_ptrs( GLcontext *ctx, GLuint start )
{
struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
@@ -431,13 +447,40 @@ void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
update_input_ptrs(ctx, start);
-
/* Note: dest should not be adjusted for non-zero 'start' values:
*/
vtx->emit( ctx, end - start, (GLubyte*) dest );
return (void *)((GLubyte *)dest + vtx->vertex_size * (end - start));
}
+/* Emit indexed VB vertices start..end to dest. Note that VB vertex at
+ * postion start will be emitted to dest at position zero.
+ */
+
+void *_tnl_emit_indexed_vertices_to_buffer( GLcontext *ctx,
+ GLuint *elts,
+ GLuint start,
+ GLuint end,
+ void *dest )
+{
+ struct tnl_clipspace *vtx = GET_VERTEX_STATE(ctx);
+ GLuint oldIndex;
+ GLubyte *cdest = dest;
+
+ update_input_ptrs(ctx, oldIndex = elts[start++]);
+ vtx->emit( ctx, 1, cdest );
+ cdest += vtx->vertex_size;
+
+ for (; start < end; ++start) {
+ adjust_input_ptrs(ctx, elts[start] - oldIndex);
+ oldIndex = elts[start];
+ vtx->emit( ctx, 1, cdest);
+ cdest += vtx->vertex_size;
+ }
+
+ return (void *) cdest;
+}
+
void _tnl_init_vertices( GLcontext *ctx,
GLuint vb_size,
diff --git a/src/mesa/tnl/t_vertex.h b/src/mesa/tnl/t_vertex.h
index 712311a..271efdf 100644
--- a/src/mesa/tnl/t_vertex.h
+++ b/src/mesa/tnl/t_vertex.h
@@ -118,6 +118,12 @@ extern void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
GLuint start,
GLuint end,
void *dest );
+extern void *_tnl_emit_indexed_vertices_to_buffer( GLcontext *ctx,
+ GLuint *elts,
+ GLuint start,
+ GLuint end,
+ void *dest );
+
extern void _tnl_build_vertices( GLcontext *ctx,
GLuint start,
--
1.5.4.3
------------------------------------------------------------------------------
This SF.net email is sponsored by:
SourcForge Community
SourceForge wants to tell your story.
http://p.sf.net/sfu/sf-spreadtheword
_______________________________________________
Mesa3d-dev mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
