diff options
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_context.c')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_context.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c index 22c0e9be998..1fc6dbabc25 100644 --- a/src/gallium/auxiliary/draw/draw_context.c +++ b/src/gallium/auxiliary/draw/draw_context.c @@ -806,15 +806,36 @@ draw_get_rasterizer_no_cull( struct draw_context *draw, return draw->rasterizer_no_cull[scissor][flatshade]; } +/** + * Sets the mapped so targets. + * + * The append bitmask specifies which of the buffers are in + * the append mode. The append mode means that the buffer + * should be appended to, rather than written to from the start. + * i.e. the outputs should be written starting from the last + * location to which the previous + * pass of stream output wrote to in this buffer. + * If the buffer is not in an append mode (which is more common) + * the writing begins from the start of the buffer. + * + */ void draw_set_mapped_so_targets(struct draw_context *draw, int num_targets, - struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS]) + struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS], + unsigned append_bitmask) { int i; - for (i = 0; i < num_targets; i++) + for (i = 0; i < num_targets; i++) { draw->so.targets[i] = targets[i]; + /* if we're not appending then lets reset the internal + data of our so target */ + if (!(append_bitmask & (1 << i)) && draw->so.targets[i]) { + draw->so.targets[i]->internal_offset = 0; + draw->so.targets[i]->emitted_vertices = 0; + } + } for (i = num_targets; i < PIPE_MAX_SO_BUFFERS; i++) draw->so.targets[i] = NULL; |