1 files changed, 68 insertions, 0 deletions
diff --git a/llama.cpp/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp b/llama.cpp/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp
new file mode 100644
index 0000000..0f23dc0
--- /dev/null
+++ b/llama.cpp/ggml/src/ggml-vulkan/vulkan-shaders/dequant_q4_k.comp
@@ -0,0 +1,68 @@
+#version 450
+
+#include "dequant_head.glsl"
+
+layout(local_size_x = 32, local_size_y = 1, local_size_z = 1) in;
+
+layout (binding = 0) readonly buffer A {A_TYPE data_a[];};
+layout (binding = 1) writeonly buffer D {D_TYPE data_b[];};
+
+void main() {
+    [[unroll]] for (uint wgy = 0; wgy < 256; wgy++) {
+        const uint ib = gl_WorkGroupID.x * 256 + wgy;
+        if (ib >= p.nel / QUANT_K) {
+            return;
+        }
+
+        const uint tid = gl_LocalInvocationID.x;
+        const uint il = tid / 8;
+        const uint ir = tid % 8;
+        const uint is = 2 * il;
+        const uint n = 4;
+
+        const FLOAT_TYPE dall = FLOAT_TYPE(data_a[ib].dm.x);
+        const FLOAT_TYPE dmin = FLOAT_TYPE(data_a[ib].dm.y);
+
+        const uint y_idx = ib * QUANT_K + 64 * il + n * ir;
+        const uint qs_idx = 32*il + n * ir;
+
+        uint scidx0 = (is < 4) ? is : (is + 4);
+        uint scidx1 = (is < 4) ? is : (is - 4);
+        uint scidxmask1 = (is < 4) ? 0x30 : 0xC0;
+        uint scidxshift1 = (is < 4) ? 0 : 2;
+        uint mbidx0 = is + 4;
+        uint mbidx1 = (is < 4) ? is + 4 : is;
+        uint mbidxmask0 = (is < 4) ? 0xF : 0xF0;
+        uint mbidxshift0 = (is < 4) ? 0 : 4;
+        uint mbidxmask1 = (is < 4) ? 0x30 : 0xC0;
+        uint mbidxshift1 = (is < 4) ? 0 : 2;
+
+        uint8_t sc = uint8_t((data_a[ib].scales[scidx0] & 0xF) | ((data_a[ib].scales[scidx1] & scidxmask1) >> scidxshift1));
+        uint8_t mbyte = uint8_t((data_a[ib].scales[mbidx0] & mbidxmask0) >> mbidxshift0 | ((data_a[ib].scales[mbidx1] & mbidxmask1) >> mbidxshift1));
+
+        const FLOAT_TYPE d1 = dall * sc;
+        const FLOAT_TYPE m1 = dmin * mbyte;
+
+        scidx0 = (is < 4) ? is + 1 : (is + 5);
+        scidx1 = (is < 4) ? is + 1 : (is - 3);
+        scidxmask1 = (is < 4) ? 0x30 : 0xC0;
+        scidxshift1 = (is < 4) ? 0 : 2;
+        mbidx0 = is + 5;
+        mbidx1 = (is < 4) ? is + 5 : is + 1;
+        mbidxmask0 = (is < 4) ? 0xF : 0xF0;
+        mbidxshift0 = (is < 4) ? 0 : 4;
+        mbidxmask1 = (is < 4) ? 0x30 : 0xC0;
+        mbidxshift1 = (is < 4) ? 0 : 2;
+
+        sc = uint8_t((data_a[ib].scales[scidx0] & 0xF) | ((data_a[ib].scales[scidx1] & scidxmask1) >> scidxshift1));
+        mbyte = uint8_t((data_a[ib].scales[mbidx0] & mbidxmask0) >> mbidxshift0 | ((data_a[ib].scales[mbidx1] & mbidxmask1) >> mbidxshift1));
+
+        const FLOAT_TYPE d2 = dall * sc;
+        const FLOAT_TYPE m2 = dmin * mbyte;
+
+        [[unroll]] for (uint l = 0; l < n; ++l) {
+            data_b[y_idx + l     ] = D_TYPE(d1 * FLOAT_TYPE(data_a[ib].qs[qs_idx + l] & 0xF) - m1);
+            data_b[y_idx + l + 32] = D_TYPE(d2 * FLOAT_TYPE(data_a[ib].qs[qs_idx + l] >>  4) - m2);
+        }
+    }
+}