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radv/gfx10: allocate ESGS ring space for exporting PrimitiveID

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Only VS needs that. We shouldn't hardcode these values but
that's complicated to not do that for now.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2019-07-11 00:25:28 +02:00
parent 4478f14327
commit f0a90eddb6
1 changed files with 20 additions and 1 deletions
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21
src/amd/vulkan/radv_shader.c
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@@ -921,15 +921,34 @@ radv_shader_variant_create(struct radv_device *device,
unsigned num_lds_symbols = 0;
const char *elf_data = (const char *)((struct radv_shader_binary_rtld *)binary)->data;
size_t elf_size = ((struct radv_shader_binary_rtld *)binary)->elf_size;
unsigned esgs_ring_size = 0;
if (device->physical_device->rad_info.chip_class >= GFX9 &&
binary->stage == MESA_SHADER_GEOMETRY && !binary->is_gs_copy_shader) {
/* TODO: Do not hardcode this value */
esgs_ring_size = 32 * 1024;
}
if (binary->variant_info.is_ngg) {
/* GS stores Primitive IDs into LDS at the address
* corresponding to the ES thread of the provoking
* vertex. All ES threads load and export PrimitiveID
* for their thread.
*/
if (binary->stage == MESA_SHADER_VERTEX &&
binary->variant_info.vs.export_prim_id) {
/* TODO: Do not harcode this value */
esgs_ring_size = 256 /* max_out_verts */ * 4;
}
}
if (esgs_ring_size) {
/* We add this symbol even on LLVM <= 8 to ensure that
* shader->config.lds_size is set correctly below.
*/
struct ac_rtld_symbol *sym = &lds_symbols[num_lds_symbols++];
sym->name = "esgs_ring";
sym->size = 32 * 1024;
sym->size = esgs_ring_size;
sym->align = 64 * 1024;
/* Make sure to have LDS space for NGG scratch. */