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draw: validate stream output buffers 

fixes a crash.
This commit is contained in:
Zack Rusin 2010-06-17 10:47:10 -04:00
parent c85971da31
commit 91862051f9
1 changed files with 16 additions and 1 deletions
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17
src/gallium/auxiliary/draw/draw_pt_so_emit.c
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@ -57,6 +57,20 @@ void draw_pt_so_emit_prepare(struct pt_so_emit *emit)
emit->has_so = (draw->so.state.num_outputs > 0);
/* if we have a state with outputs make sure we have
* buffers to output to */
if (emit->has_so) {
boolean has_valid_buffer = FALSE;
unsigned i;
for (i = 0; i < draw->so.num_buffers; ++i) {
if (draw->so.buffers[i]) {
has_valid_buffer = TRUE;
break;
}
}
emit->has_so = has_valid_buffer;
}
if (!emit->has_so)
return;
@ -240,8 +254,9 @@ void draw_pt_so_emit( struct pt_so_emit *emit,
emit->emitted_primitives = 0;
emit->input_vertex_stride = input_verts->stride;
emit->inputs = (const float (*)[4])input_verts->verts->data;
for (i = 0; i < draw->so.num_buffers; ++i)
for (i = 0; i < draw->so.num_buffers; ++i) {
emit->buffers[i] = draw->so.buffers[i];
}
emit->single_buffer = TRUE;
for (i = 0; i < draw->so.state.num_outputs; ++i) {
if (draw->so.state.output_buffer[i] != 0)