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r300g: fix rendering with a vertex attrib having a zero stride

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The hardware apparently does support a zero stride, so let's use it.

This fixes missing objects in ETQW, but might also fix a ton of other
similar-looking bugs.

NOTE: This is a candidate for both the 7.9 and 7.10 branches.
(cherry picked from commit 2af8a19831)
This commit is contained in:
Marek Olšák 2010-12-11 14:45:27 +01:00
parent 0a8ad737e7
commit dcc7a8a80a
1 changed files with 7 additions and 7 deletions
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14
src/gallium/drivers/r300/r300_state.c
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@ -1510,14 +1510,14 @@ static void r300_set_vertex_buffers(struct pipe_context* pipe,
any_user_buffer = TRUE; any_user_buffer = TRUE;
} }
/* The stride of zero means we will be fetching only the first
* vertex, so don't care about max_index. */
if (!vbo->stride)
continue;
if (vbo->max_index == ~0) { if (vbo->max_index == ~0) {
/* if no VBO stride then only one vertex value so max index is 1 */ vbo->max_index =
/* should think about converting to VS constants like svga does */ (vbo->buffer->width0 - vbo->buffer_offset) / vbo->stride;
if (!vbo->stride)
vbo->max_index = 1;
else
vbo->max_index =
(vbo->buffer->width0 - vbo->buffer_offset) / vbo->stride;
} }
max_index = MIN2(vbo->max_index, max_index); max_index = MIN2(vbo->max_index, max_index);