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gallium/util: add multi_draw_indirect to util_draw_indirect.

Browse source 
ARB_indirect_parameters needs drivers to deal with mutli_draw_indirect
themselves.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3234>
This commit is contained in:
Dave Airlie 2019-12-23 14:56:01 +10:00
parent 3a4f8c8158
commit d10a3d528f
1 changed files with 13 additions and 9 deletions
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22
src/gallium/auxiliary/util/u_draw.c
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@ -147,7 +147,7 @@ util_draw_indirect(struct pipe_context *pipe,
pipe_buffer_map_range(pipe,
info_in->indirect->buffer,
info_in->indirect->offset,
num_params * sizeof(uint32_t),
(num_params * info_in->indirect->draw_count) * sizeof(uint32_t),
PIPE_TRANSFER_READ,
&transfer);
if (!transfer) {
@ -155,14 +155,18 @@ util_draw_indirect(struct pipe_context *pipe,
return;
}
info.count = params[0];
info.instance_count = params[1];
info.start = params[2];
info.index_bias = info_in->index_size ? params[3] : 0;
info.start_instance = info_in->index_size ? params[4] : params[3];
info.indirect = NULL;
for (unsigned i = 0; i < info_in->indirect->draw_count; i++) {
info.count = params[0];
info.instance_count = params[1];
info.start = params[2];
info.index_bias = info_in->index_size ? params[3] : 0;
info.start_instance = info_in->index_size ? params[4] : params[3];
info.drawid = i;
info.indirect = NULL;
pipe->draw_vbo(pipe, &info);
params += info_in->indirect->stride / 4;
}
pipe_buffer_unmap(pipe, transfer);
pipe->draw_vbo(pipe, &info);
}