On Wed, May 27, 2015 at 7:42 AM, Roland Scheidegger <srol...@vmware.com> wrote:
> Am 27.05.2015 um 09:45 schrieb Dave Airlie:
>> From: Dave Airlie <airl...@redhat.com>
>>
>> This is just for softpipe, llvmpipe won't work without
>> some changes.
>>
>> Signed-off-by: Dave Airlie <airl...@redhat.com>
>> ---
>> src/gallium/auxiliary/draw/draw_gs.c | 47
>> +++++++++++++++++++++-------------
>> src/gallium/auxiliary/draw/draw_gs.h | 2 ++
>> src/gallium/auxiliary/tgsi/tgsi_scan.c | 2 ++
>> src/gallium/auxiliary/tgsi/tgsi_scan.h | 1 +
>> 4 files changed, 34 insertions(+), 18 deletions(-)
>>
>> diff --git a/src/gallium/auxiliary/draw/draw_gs.c
>> b/src/gallium/auxiliary/draw/draw_gs.c
>> index 6375d41..755e527 100644
>> --- a/src/gallium/auxiliary/draw/draw_gs.c
>> +++ b/src/gallium/auxiliary/draw/draw_gs.c
>> @@ -190,9 +190,15 @@ static void tgsi_gs_prepare(struct draw_geometry_shader
>> *shader,
>> const unsigned
>> constants_size[PIPE_MAX_CONSTANT_BUFFERS])
>> {
>> struct tgsi_exec_machine *machine = shader->machine;
>> -
>> + int j;
>> tgsi_exec_set_constant_buffers(machine, PIPE_MAX_CONSTANT_BUFFERS,
>> constants, constants_size);
>> +
>> + if (shader->info.uses_invocationid) {
>> + unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_INVOCATIONID];
>> + for (j = 0; j < TGSI_QUAD_SIZE; j++)
>> + machine->SystemValue[i].i[j] = shader->invocation_id;
>> + }
>> }
>>
>> static unsigned tgsi_gs_run(struct draw_geometry_shader *shader,
>> @@ -555,7 +561,7 @@ int draw_geometry_shader_run(struct draw_geometry_shader
>> *shader,
>> * overflown vertices into some area where they won't harm anyone */
>> unsigned total_verts_per_buffer = shader->primitive_boundary *
>> num_in_primitives;
>> -
>> + unsigned invocation;
>> //Assume at least one primitive
>> max_out_prims = MAX2(max_out_prims, 1);
>>
>> @@ -564,7 +570,7 @@ int draw_geometry_shader_run(struct draw_geometry_shader
>> *shader,
>> output_verts->stride = output_verts->vertex_size;
>> output_verts->verts =
>> (struct vertex_header *)MALLOC(output_verts->vertex_size *
>> - total_verts_per_buffer);
>> + total_verts_per_buffer *
>> shader->num_invocations);
> This can't get very large, right?
With ARB_gpu_shader5, it has to be at least 32. In mesa, it's always
defined as 32.
-ilia
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