From: Bertay Eren <redacted>
Date: Mon, 9 Mar 2026 06:24:16 +0000 (+0300)
Subject: ggml-vulkan: add SGN operator, auto-generate Vulkan.csv and ops.md (llama/20219)
X-Git-Tag: upstream/1.8.4~65
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=65dbf3c31a44501c9cea2995587d6090db4a7d5f;p=pkg%2Fggml%2Fsources%2Fwhisper.cpp

ggml-vulkan: add SGN operator, auto-generate Vulkan.csv and ops.md (llama/20219)
---

diff --git a/ggml/src/ggml-vulkan/ggml-vulkan.cpp b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
index 70e992ce..61d112c5 100644
--- a/ggml/src/ggml-vulkan/ggml-vulkan.cpp
+++ b/ggml/src/ggml-vulkan/ggml-vulkan.cpp
@@ -763,6 +763,7 @@ struct vk_device_struct {
     vk_pipeline pipeline_ceil[2];
     vk_pipeline pipeline_floor[2];
     vk_pipeline pipeline_trunc[2];
+    vk_pipeline pipeline_sgn[2];
 
     vk_pipeline pipeline_add1_f16_f16;
     vk_pipeline pipeline_add1_f16_f32;
@@ -4393,6 +4394,7 @@ static void ggml_vk_load_shaders(vk_device& device) {
     CREATE_UNARY(ceil)
     CREATE_UNARY(floor)
     CREATE_UNARY(trunc)
+    CREATE_UNARY(sgn)
 #undef CREATE_UNARY
 
 #define CREATE_UNARY_RTE(name)  \
@@ -9281,6 +9283,8 @@ static vk_pipeline ggml_vk_op_get_pipeline(ggml_backend_vk_context * ctx, const
                 return ctx->device->pipeline_floor[dst->type == GGML_TYPE_F16];
             case GGML_UNARY_OP_TRUNC:
                 return ctx->device->pipeline_trunc[dst->type == GGML_TYPE_F16];
+            case GGML_UNARY_OP_SGN:
+                return ctx->device->pipeline_sgn[dst->type == GGML_TYPE_F16];
             default:
                 break;
         }
@@ -12875,6 +12879,7 @@ static bool ggml_vk_build_graph(ggml_backend_vk_context * ctx, ggml_cgraph * cgr
         case GGML_UNARY_OP_CEIL:
         case GGML_UNARY_OP_FLOOR:
         case GGML_UNARY_OP_TRUNC:
+        case GGML_UNARY_OP_SGN:
             ggml_vk_unary(ctx, compute_ctx, src0, node);
             break;
         case GGML_UNARY_OP_XIELU:
@@ -15004,6 +15009,7 @@ static bool ggml_backend_vk_device_supports_op(ggml_backend_dev_t dev, const ggm
                 case GGML_UNARY_OP_CEIL:
                 case GGML_UNARY_OP_FLOOR:
                 case GGML_UNARY_OP_TRUNC:
+                case GGML_UNARY_OP_SGN:
                     return ggml_is_contiguous(op->src[0]) &&
                            (op->src[0]->type == GGML_TYPE_F32 || op->src[0]->type == GGML_TYPE_F16) &&
                            (op->type == GGML_TYPE_F32 || op->type == GGML_TYPE_F16) &&
@@ -16170,6 +16176,9 @@ static void ggml_vk_check_results_0(ggml_backend_vk_context * ctx, ggml_cgraph *
             case GGML_UNARY_OP_TRUNC:
                 tensor_clone = ggml_trunc(ggml_ctx, src_clone[0]);
                 break;
+            case GGML_UNARY_OP_SGN:
+                tensor_clone = ggml_sgn(ggml_ctx, src_clone[0]);
+                break;
             default:
                 std::cerr << "Missing vk_check_results OP: " << ggml_op_name(tensor->op) << std::endl;
                 GGML_ABORT("fatal error");
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/sgn.comp b/ggml/src/ggml-vulkan/vulkan-shaders/sgn.comp
new file mode 100644
index 00000000..a9c147bf
--- /dev/null
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/sgn.comp
@@ -0,0 +1,21 @@
+#version 450
+
+#include "generic_head.glsl"
+#include "types.glsl"
+
+#extension GL_EXT_control_flow_attributes : enable
+
+layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in;
+
+layout (binding = 0) readonly buffer X {A_TYPE data_a[];};
+layout (binding = 1) writeonly buffer D {D_TYPE data_d[];};
+
+void main() {
+    const uint i = gl_GlobalInvocationID.z * 262144 + gl_GlobalInvocationID.y * 512 + gl_GlobalInvocationID.x;
+
+    if (i >= p.KX) {
+        return;
+    }
+
+    data_d[i] = D_TYPE(sign(float(data_a[i])));
+}
diff --git a/ggml/src/ggml-vulkan/vulkan-shaders/vulkan-shaders-gen.cpp b/ggml/src/ggml-vulkan/vulkan-shaders/vulkan-shaders-gen.cpp
index ed077dfb..fb894123 100644
--- a/ggml/src/ggml-vulkan/vulkan-shaders/vulkan-shaders-gen.cpp
+++ b/ggml/src/ggml-vulkan/vulkan-shaders/vulkan-shaders-gen.cpp
@@ -871,6 +871,8 @@ void process_shaders() {
     string_to_spv("elu_f32",        "elu.comp",         {{"A_TYPE", "float"},       {"D_TYPE", "float"}});
     string_to_spv("xielu_f16",      "xielu.comp",       {{"A_TYPE", "float16_t"},   {"D_TYPE", "float16_t"}});
     string_to_spv("xielu_f32",      "xielu.comp",       {{"A_TYPE", "float"},       {"D_TYPE", "float"}});
+    string_to_spv("sgn_f16",        "sgn.comp",         {{"A_TYPE", "float16_t"},   {"D_TYPE", "float16_t"}});
+    string_to_spv("sgn_f32",        "sgn.comp",         {{"A_TYPE", "float"},       {"D_TYPE", "float"}});
 
     string_to_spv("tri_f16",        "tri.comp",         {{"A_TYPE", "float16_t"},   {"D_TYPE", "float16_t"}});
     string_to_spv("tri_f32",        "tri.comp",         {{"A_TYPE", "float"},       {"D_TYPE", "float"}});