From 543b9566bdaa48fea2df1866fa1310c1cdbcde27 Mon Sep 17 00:00:00 2001 From: Michal Krol Date: Wed, 30 Dec 2009 22:18:53 +0100 Subject: Add lame support for instanceID to draw module. It's all screaming for integer support -- fake it with float for now. --- src/gallium/auxiliary/draw/draw_pt_fetch.c | 32 +++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) (limited to 'src/gallium/auxiliary/draw/draw_pt_fetch.c') diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch.c b/src/gallium/auxiliary/draw/draw_pt_fetch.c index f88a839f61..36c27e22ff 100644 --- a/src/gallium/auxiliary/draw/draw_pt_fetch.c +++ b/src/gallium/auxiliary/draw/draw_pt_fetch.c @@ -58,12 +58,14 @@ struct pt_fetch { */ void draw_pt_fetch_prepare( struct pt_fetch *fetch, unsigned vs_input_count, - unsigned vertex_size ) + unsigned vertex_size, + unsigned instance_id_index ) { struct draw_context *draw = fetch->draw; unsigned nr_inputs; - unsigned i, nr = 0; + unsigned i, nr = 0, ei = 0; unsigned dst_offset = 0; + unsigned num_extra_inputs = 0; struct translate_key key; fetch->vertex_size = vertex_size; @@ -78,6 +80,7 @@ void draw_pt_fetch_prepare( struct pt_fetch *fetch, { /* Need to set header->vertex_id = 0xffff somehow. */ + key.element[nr].type = TRANSLATE_ELEMENT_NORMAL; key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT; key.element[nr].input_buffer = draw->pt.nr_vertex_buffers; key.element[nr].input_offset = 0; @@ -92,16 +95,27 @@ void draw_pt_fetch_prepare( struct pt_fetch *fetch, */ dst_offset += 4 * sizeof(float); } - - assert( draw->pt.nr_vertex_elements >= vs_input_count ); - nr_inputs = MIN2( vs_input_count, draw->pt.nr_vertex_elements ); + if (instance_id_index != ~0) { + num_extra_inputs++; + } + + assert(draw->pt.nr_vertex_elements + num_extra_inputs >= vs_input_count); + + nr_inputs = MIN2(vs_input_count, draw->pt.nr_vertex_elements + num_extra_inputs); for (i = 0; i < nr_inputs; i++) { - key.element[nr].input_format = draw->pt.vertex_element[i].src_format; - key.element[nr].input_buffer = draw->pt.vertex_element[i].vertex_buffer_index; - key.element[nr].input_offset = draw->pt.vertex_element[i].src_offset; - key.element[nr].instance_divisor = draw->pt.vertex_element[i].instance_divisor; + if (i == instance_id_index) { + key.element[nr].type = TRANSLATE_ELEMENT_INSTANCE_ID; + key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT; /* XXX: Make it UINT. */ + } else { + key.element[nr].type = TRANSLATE_ELEMENT_NORMAL; + key.element[nr].input_format = draw->pt.vertex_element[ei].src_format; + key.element[nr].input_buffer = draw->pt.vertex_element[ei].vertex_buffer_index; + key.element[nr].input_offset = draw->pt.vertex_element[ei].src_offset; + key.element[nr].instance_divisor = draw->pt.vertex_element[ei].instance_divisor; + ei++; + } key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT; key.element[nr].output_offset = dst_offset; -- cgit v1.2.3