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nvc0: force vertex data through FIFO if we need to convert it

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We may want to put the converted vertex buffer in persistent
storage instead, but these are rare corner cases.
This commit is contained in:
Christoph Bumiller 2011-02-12 19:18:19 +01:00
parent bf1ce9c64b
commit 17d680cc53
2 changed files with 9 additions and 1 deletions
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1
src/gallium/drivers/nvc0/nvc0_stateobj.h
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@ -67,6 +67,7 @@ struct nvc0_vertex_stateobj {
unsigned num_elements;
uint32_t instance_elts;
uint32_t instance_bufs;
boolean need_conversion; /* e.g. VFETCH cannot convert f64 to f32 */
unsigned vtx_size;
unsigned vtx_per_packet_max;
struct nvc0_vertex_element element[0];

9
src/gallium/drivers/nvc0/nvc0_vbo.c
View file

@ -60,6 +60,7 @@ nvc0_vertex_state_create(struct pipe_context *pipe,
so->num_elements = num_elements;
so->instance_elts = 0;
so->instance_bufs = 0;
so->need_conversion = FALSE;
transkey.nr_elements = 0;
transkey.output_stride = 0;
@ -83,6 +84,7 @@ nvc0_vertex_state_create(struct pipe_context *pipe,
return NULL;
}
so->element[i].state = nvc0_format_table[fmt].vtx;
so->need_conversion = TRUE;
}
so->element[i].state |= i;
@ -263,7 +265,12 @@ nvc0_vertex_arrays_validate(struct nvc0_context *nvc0)
struct nvc0_vertex_element *ve;
unsigned i;
nvc0_prevalidate_vbufs(nvc0);
if (unlikely(vertex->need_conversion)) {
nvc0->vbo_fifo = ~0;
nvc0->vbo_user = 0;
} else {
nvc0_prevalidate_vbufs(nvc0);
}
BEGIN_RING(chan, RING_3D(VERTEX_ATTRIB_FORMAT(0)), vertex->num_elements);
for (i = 0; i < vertex->num_elements; ++i) {