Mesa (master): radv: gather the number of streams used by geometry shaders
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Mon Oct 29 16:10:59 UTC 2018
Module: Mesa
Branch: master
Commit: 87e6866b043c6fcadc78f34929e48961b885003e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=87e6866b043c6fcadc78f34929e48961b885003e
Author: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Date: Tue Sep 11 11:08:23 2018 +0200
radv: gather the number of streams used by geometry shaders
This will be used for splitting the GS->VS ring buffer. The
stream ID is always 0 for now.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
Reviewed-by: Dave Airlie <airlied at redhat.com>
---
src/amd/vulkan/radv_shader.h | 1 +
src/amd/vulkan/radv_shader_info.c | 14 ++++++++++++++
2 files changed, 15 insertions(+)
diff --git a/src/amd/vulkan/radv_shader.h b/src/amd/vulkan/radv_shader.h
index 22423e5f99..465c8d160f 100644
--- a/src/amd/vulkan/radv_shader.h
+++ b/src/amd/vulkan/radv_shader.h
@@ -159,6 +159,7 @@ struct radv_shader_info {
} vs;
struct {
uint8_t output_usage_mask[VARYING_SLOT_VAR31 + 1];
+ uint8_t max_stream;
} gs;
struct {
uint8_t output_usage_mask[VARYING_SLOT_VAR31 + 1];
diff --git a/src/amd/vulkan/radv_shader_info.c b/src/amd/vulkan/radv_shader_info.c
index 6262acb1a6..00bc2ca5db 100644
--- a/src/amd/vulkan/radv_shader_info.c
+++ b/src/amd/vulkan/radv_shader_info.c
@@ -435,6 +435,17 @@ gather_info_output_decl_ps(const nir_shader *nir, const nir_variable *var,
}
static void
+gather_info_output_decl_gs(const nir_shader *nir, const nir_variable *var,
+ struct radv_shader_info *info)
+{
+ unsigned stream = var->data.stream;
+
+ assert(stream < 4);
+
+ info->gs.max_stream = MAX2(info->gs.max_stream, stream);
+}
+
+static void
gather_info_output_decl(const nir_shader *nir, const nir_variable *var,
struct radv_shader_info *info,
const struct radv_nir_compiler_options *options)
@@ -447,6 +458,9 @@ gather_info_output_decl(const nir_shader *nir, const nir_variable *var,
if (options->key.vs.as_ls)
gather_info_output_decl_ls(nir, var, info);
break;
+ case MESA_SHADER_GEOMETRY:
+ gather_info_output_decl_gs(nir, var, info);
+ break;
default:
break;
}
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