Behavior wrt firstInstance got changed, and a divisor of 0 has been
disallowed.
The new version of the ext got published in specification 1.1.81.
---
src/amd/vulkan/radv_extensions.py | 2 +-
src/amd/vulkan/radv_nir_to_llvm.c | 7 ++++---
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/src/amd/vulkan/radv_extensions.py
b/src/amd/vulkan/radv_extensions.py
index a5fbffac33b..d02042e5647 100644
--- a/src/amd/vulkan/radv_extensions.py
+++ b/src/amd/vulkan/radv_extensions.py
@@ -104,7 +104,7 @@ EXTENSIONS = [
Extension('VK_EXT_sampler_filter_minmax', 1,
'device->rad_info.chip_class >= CIK'),
Extension('VK_EXT_shader_viewport_index_layer', 1, True),
Extension('VK_EXT_shader_stencil_export', 1, True),
- Extension('VK_EXT_vertex_attribute_divisor', 1, True),
+ Extension('VK_EXT_vertex_attribute_divisor', 2, True),
Extension('VK_AMD_draw_indirect_count', 1, True),
Extension('VK_AMD_gcn_shader', 1, True),
Extension('VK_AMD_rasterization_order', 1,
'device->has_out_of_order_rast'),
diff --git a/src/amd/vulkan/radv_nir_to_llvm.c
b/src/amd/vulkan/radv_nir_to_llvm.c
index c7d772fa652..d12ef09c9f3 100644
--- a/src/amd/vulkan/radv_nir_to_llvm.c
+++ b/src/amd/vulkan/radv_nir_to_llvm.c
@@ -1984,8 +1984,7 @@ handle_vs_input_decl(struct radv_shader_context *ctx,
uint32_t divisor =
ctx->options->key.vs.instance_rate_divisors[attrib_index];
if (divisor) {
- buffer_index = LLVMBuildAdd(ctx->ac.builder,
ctx->abi.instance_id,
-
ctx->abi.start_instance, "");
+ buffer_index = ctx->abi.instance_id;
if (divisor != 1) {
buffer_index =
LLVMBuildUDiv(ctx->ac.builder, buffer_index,
@@ -2000,8 +1999,10 @@ handle_vs_input_decl(struct radv_shader_context *ctx,
MAX2(1,
ctx->shader_info->vs.vgpr_comp_cnt);
}
} else {
- buffer_index = ctx->ac.i32_0;
+ unreachable("Invalid vertex attribute divisor
of 0.");
}
+
+ buffer_index = LLVMBuildAdd(ctx->ac.builder,
ctx->abi.start_instance, buffer_index, "");
} else
buffer_index = LLVMBuildAdd(ctx->ac.builder,
ctx->abi.vertex_id,
ctx->abi.base_vertex, "");
--
2.18.0
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