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spirv: Add support for DerivativeGroup capabilities

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As defined in SPV_NV_compute_shader_derivatives. These control how the
invocations are arranged in a CS when doing derivative and related
operations (which are also enabled by the extension).

Since we expect valid SPIR-V, we don't need to do more work at SPIR-V
level to enable the derivative and related operations to be called.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Caio Marcelo de Oliveira Filho
2019-03-28 10:23:02 -07:00
parent 956226c8ba
commit bd73531677
2 changed files with 16 additions and 0 deletions
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1
src/compiler/shader_info.h
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@@ -35,6 +35,7 @@ extern "C" {
struct spirv_supported_capabilities {
bool address;
bool atomic_storage;
bool derivative_group;
bool descriptor_array_dynamic_indexing;
bool device_group;
bool draw_parameters;

15
src/compiler/spirv/spirv_to_nir.c
View File

@@ -3776,6 +3776,11 @@ vtn_handle_preamble_instruction(struct vtn_builder *b, SpvOp opcode,
spv_check_supported(physical_storage_buffer_address, cap);
break;
case SpvCapabilityComputeDerivativeGroupQuadsNV:
case SpvCapabilityComputeDerivativeGroupLinearNV:
spv_check_supported(derivative_group, cap);
break;
default:
vtn_fail("Unhandled capability");
}
@@ -4019,6 +4024,16 @@ vtn_handle_execution_mode(struct vtn_builder *b, struct vtn_value *entry_point,
vtn_assert(b->shader->info.stage == MESA_SHADER_FRAGMENT);
break;
case SpvExecutionModeDerivativeGroupQuadsNV:
vtn_assert(b->shader->info.stage == MESA_SHADER_COMPUTE);
b->shader->info.cs.derivative_group = DERIVATIVE_GROUP_QUADS;
break;
case SpvExecutionModeDerivativeGroupLinearNV:
vtn_assert(b->shader->info.stage == MESA_SHADER_COMPUTE);
b->shader->info.cs.derivative_group = DERIVATIVE_GROUP_LINEAR;
break;
default:
vtn_fail("Unhandled execution mode");
}