radv: disable EXT_vertex_input_dynamic_state when using DGC

This simplifies the DGC path and removes some untested code. The only user
of the partial DGC implementation (vkd3d-proton) doesn't use
EXT_vertex_input_dynamic_state.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18465>

src/amd/vulkan/radv_device.c

@@ -386,6 +386,14 @@ radv_taskmesh_enabled(const struct radv_physical_device *pdevice)
           pdevice->rad_info.has_scheduled_fence_dependency;
 }
 
+static bool
+radv_NV_device_generated_commands_enabled(const struct radv_physical_device *device)
+{
+   return device->rad_info.gfx_level >= GFX7 &&
+          !(device->instance->debug_flags & RADV_DEBUG_NO_IBS) &&
+          driQueryOptionb(&device->instance->dri_options, "radv_dgc");
+}
+
 #if defined(VK_USE_PLATFORM_WAYLAND_KHR) || defined(VK_USE_PLATFORM_XCB_KHR) ||                    \
    defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_DISPLAY_KHR)
 #define RADV_USE_WSI_PLATFORM
@@ -589,7 +597,8 @@ radv_physical_device_get_supported_extensions(const struct radv_physical_device
       .EXT_texel_buffer_alignment = true,
       .EXT_transform_feedback = device->rad_info.gfx_level < GFX11,
       .EXT_vertex_attribute_divisor = true,
-      .EXT_vertex_input_dynamic_state = !device->use_llvm,
+      .EXT_vertex_input_dynamic_state = !device->use_llvm &&
+                                        !radv_NV_device_generated_commands_enabled(device),
       .EXT_ycbcr_image_arrays = true,
       .AMD_buffer_marker = true,
       .AMD_device_coherent_memory = true,
@@ -617,9 +626,7 @@ radv_physical_device_get_supported_extensions(const struct radv_physical_device
       .GOOGLE_user_type = true,
       .INTEL_shader_integer_functions2 = true,
       .NV_compute_shader_derivatives = true,
-      .NV_device_generated_commands = device->rad_info.gfx_level >= GFX7 &&
+      .NV_device_generated_commands = radv_NV_device_generated_commands_enabled(device),
-                                      !(device->instance->debug_flags & RADV_DEBUG_NO_IBS) &&
-                                      driQueryOptionb(&device->instance->dri_options, "radv_dgc"),
       .NV_mesh_shader =
          radv_taskmesh_enabled(device) && device->instance->perftest_flags & RADV_PERFTEST_NV_MS,
       /* Undocumented extension purely for vkd3d-proton. This check is to prevent anyone else from

src/amd/vulkan/radv_device_generated_commands.c

@@ -147,7 +147,6 @@ struct radv_dgc_params {
    /* bind index buffer info. Valid if base_index_size == 0 && draw_indexed */
    uint16_t index_buffer_offset;
 
-   /* Top bit is DGC_DYNAMIC_VERTEX_INPUT */
    uint8_t vbo_cnt;
 
    uint8_t const_copy;
@@ -181,10 +180,6 @@ enum {
    DGC_DYNAMIC_STRIDE = 1u << 15,
 };
 
-enum {
-   DGC_DYNAMIC_VERTEX_INPUT = 1u << 7,
-};
-
 enum {
    DGC_DESC_STREAM,
    DGC_DESC_PREPARE,
@@ -381,7 +376,7 @@ build_dgc_prepare_shader(struct radv_device *dev)
                     0x1);
 
       nir_ssa_def *vbo_bind_mask = load_param32(&b, vbo_bind_mask);
-      nir_ssa_def *vbo_cnt = nir_iand_imm(&b, load_param8(&b, vbo_cnt), 0x7F);
+      nir_ssa_def *vbo_cnt = load_param8(&b, vbo_cnt);
       nir_push_if(&b, nir_ine_imm(&b, vbo_bind_mask, 0));
       {
          nir_variable *vbo_idx =
@@ -425,9 +420,6 @@ build_dgc_prepare_shader(struct radv_device *dev)
                nir_ssa_def *size = nir_channel(&b, stream_data, 2);
                nir_ssa_def *stride = nir_channel(&b, stream_data, 3);
 
-               nir_ssa_def *vs_state_offset = nir_ubfe(&b, nir_channel(&b, vbo_over_data, 0), nir_imm_int(&b, 16), nir_imm_int(&b, 15));
-               va = nir_iadd(&b, va, nir_u2u64(&b, vs_state_offset));
-
                nir_ssa_def *dyn_stride = nir_test_mask(&b, nir_channel(&b, vbo_over_data, 0), DGC_DYNAMIC_STRIDE);
                nir_ssa_def *old_stride =
                   nir_ubfe(&b, nir_channel(&b, nir_load_var(&b, vbo_data), 1), nir_imm_int(&b, 16),
@@ -530,23 +522,9 @@ build_dgc_prepare_shader(struct radv_device *dev)
             nir_push_if(&b,
                         nir_ior(&b, nir_ieq_imm(&b, num_records, 0), nir_ieq_imm(&b, buf_va, 0)));
             {
-               nir_ssa_def *use_dynamic_vertex_input =
+               nir_ssa_def *new_vbo_data[4] = {nir_imm_int(&b, 0), nir_imm_int(&b, 0),
-                  nir_test_mask(&b, load_param8(&b, vbo_cnt), DGC_DYNAMIC_VERTEX_INPUT);
+                                               nir_imm_int(&b, 0), nir_imm_int(&b, 0)};
-
+               nir_store_var(&b, vbo_data, nir_vec(&b, new_vbo_data, 4), 0xf);
-               nir_push_if(&b, use_dynamic_vertex_input);
-               {
-                  nir_ssa_def *new_vbo_data[4] = {
-                     nir_imm_int(&b, 0), nir_imm_int(&b, S_008F04_STRIDE(16)), nir_imm_int(&b, 0),
-                     nir_channel(&b, nir_load_var(&b, vbo_data), 3)};
-                  nir_store_var(&b, vbo_data, nir_vec(&b, new_vbo_data, 4), 0xf);
-               }
-               nir_push_else(&b, NULL);
-               {
-                  nir_ssa_def *new_vbo_data[4] = {nir_imm_int(&b, 0), nir_imm_int(&b, 0),
-                                                  nir_imm_int(&b, 0), nir_imm_int(&b, 0)};
-                  nir_store_var(&b, vbo_data, nir_vec(&b, new_vbo_data, 4), 0xf);
-               }
-               nir_pop_if(&b, NULL);
             }
             nir_pop_if(&b, NULL);
 
@@ -1208,27 +1186,21 @@ radv_prepare_dgc(struct radv_cmd_buffer *cmd_buffer,
 
       uint32_t *vbo_info = (uint32_t *)((char *)upload_data + graphics_pipeline->vb_desc_alloc_size);
 
-      struct radv_shader *vs_shader = radv_get_shader(&graphics_pipeline->base, MESA_SHADER_VERTEX);
-      const struct radv_vs_input_state *vs_state =
-         vs_shader->info.vs.dynamic_inputs ? &cmd_buffer->state.dynamic_vs_input : NULL;
       uint32_t mask = graphics_pipeline->vb_desc_usage_mask;
       unsigned idx = 0;
       while (mask) {
          unsigned i = u_bit_scan(&mask);
          unsigned binding =
-            vs_state ? cmd_buffer->state.dynamic_vs_input.bindings[i]
+            graphics_pipeline->use_per_attribute_vb_descs ? graphics_pipeline->attrib_bindings[i] : i;
-                     : (graphics_pipeline->use_per_attribute_vb_descs ? graphics_pipeline->attrib_bindings[i] : i);
+         uint32_t attrib_end = graphics_pipeline->attrib_ends[i];
-         uint32_t attrib_end =
-            vs_state ? vs_state->offsets[i] + vs_state->format_sizes[i] : graphics_pipeline->attrib_ends[i];
 
          params.vbo_bind_mask |= ((layout->bind_vbo_mask >> binding) & 1u) << idx;
          vbo_info[2 * idx] = ((graphics_pipeline->use_per_attribute_vb_descs ? 1u : 0u) << 31) |
-                             (vs_state ? vs_state->offsets[i] << 16 : 0) |
                              layout->vbo_offsets[binding];
          vbo_info[2 * idx + 1] = graphics_pipeline->attrib_index_offset[i] | (attrib_end << 16);
          ++idx;
       }
-      params.vbo_cnt = idx | (vs_state ? DGC_DYNAMIC_VERTEX_INPUT : 0);
+      params.vbo_cnt = idx;
       upload_data = (char *)upload_data + vb_size;
    }