OSDN Git Service

radv: implement VK_EXT_transform_feedback
authorSamuel Pitoiset <samuel.pitoiset@gmail.com>
Fri, 5 Oct 2018 16:04:56 +0000 (18:04 +0200)
committerSamuel Pitoiset <samuel.pitoiset@gmail.com>
Mon, 29 Oct 2018 16:10:58 +0000 (17:10 +0100)
This implementation should work and potential bugs can be
fixed during the release candidates window anyway.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
src/amd/common/sid.h
src/amd/vulkan/radv_cmd_buffer.c
src/amd/vulkan/radv_device.c
src/amd/vulkan/radv_extensions.py
src/amd/vulkan/radv_pipeline.c
src/amd/vulkan/radv_private.h
src/amd/vulkan/radv_query.c
src/amd/vulkan/radv_shader.c
src/amd/vulkan/si_cmd_buffer.c

index 69b5321..d88ecf5 100644 (file)
 #define                        STRMOUT_OFFSET_FROM_VGT_FILLED_SIZE     1
 #define                        STRMOUT_OFFSET_FROM_MEM                 2
 #define                        STRMOUT_OFFSET_NONE                     3
+#define                STRMOUT_DATA_TYPE(x)            (((unsigned)(x) & 0x1) << 7)
 #define                STRMOUT_SELECT_BUFFER(x)        (((unsigned)(x) & 0x3) << 8)
 #define PKT3_DRAW_INDEX_OFFSET_2               0x35
 #define PKT3_WRITE_DATA                        0x37
index e21aaa9..63a1fd6 100644 (file)
@@ -196,6 +196,23 @@ radv_bind_dynamic_state(struct radv_cmd_buffer *cmd_buffer,
        cmd_buffer->state.dirty |= dest_mask;
 }
 
+static void
+radv_bind_streamout_state(struct radv_cmd_buffer *cmd_buffer,
+                         struct radv_pipeline *pipeline)
+{
+       struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+       struct radv_shader_info *info;
+
+       if (!pipeline->streamout_shader)
+               return;
+
+       info = &pipeline->streamout_shader->info.info;
+       for (int i = 0; i < MAX_SO_BUFFERS; i++)
+               so->stride_in_dw[i] = info->so.strides[i];
+
+       so->enabled_stream_buffers_mask = info->so.enabled_stream_buffers_mask;
+}
+
 bool radv_cmd_buffer_uses_mec(struct radv_cmd_buffer *cmd_buffer)
 {
        return cmd_buffer->queue_family_index == RADV_QUEUE_COMPUTE &&
@@ -1876,9 +1893,93 @@ radv_flush_vertex_descriptors(struct radv_cmd_buffer *cmd_buffer,
 }
 
 static void
+radv_emit_streamout_buffers(struct radv_cmd_buffer *cmd_buffer, uint64_t va)
+{
+       struct radv_pipeline *pipeline = cmd_buffer->state.pipeline;
+       struct radv_userdata_info *loc;
+       uint32_t base_reg;
+
+       for (unsigned stage = 0; stage < MESA_SHADER_STAGES; ++stage) {
+               if (!radv_get_shader(pipeline, stage))
+                       continue;
+
+               loc = radv_lookup_user_sgpr(pipeline, stage,
+                                           AC_UD_STREAMOUT_BUFFERS);
+               if (loc->sgpr_idx == -1)
+                       continue;
+
+               base_reg = pipeline->user_data_0[stage];
+
+               radv_emit_shader_pointer(cmd_buffer->device, cmd_buffer->cs,
+                                        base_reg + loc->sgpr_idx * 4, va, false);
+       }
+
+       if (pipeline->gs_copy_shader) {
+               loc = &pipeline->gs_copy_shader->info.user_sgprs_locs.shader_data[AC_UD_STREAMOUT_BUFFERS];
+               if (loc->sgpr_idx != -1) {
+                       base_reg = R_00B130_SPI_SHADER_USER_DATA_VS_0;
+
+                       radv_emit_shader_pointer(cmd_buffer->device, cmd_buffer->cs,
+                                                base_reg + loc->sgpr_idx * 4, va, false);
+               }
+       }
+}
+
+static void
+radv_flush_streamout_descriptors(struct radv_cmd_buffer *cmd_buffer)
+{
+       if (cmd_buffer->state.dirty & RADV_CMD_DIRTY_STREAMOUT_BUFFER) {
+               struct radv_streamout_binding *sb = cmd_buffer->streamout_bindings;
+               struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+               unsigned so_offset;
+               void *so_ptr;
+               uint64_t va;
+
+               /* Allocate some descriptor state for streamout buffers. */
+               if (!radv_cmd_buffer_upload_alloc(cmd_buffer,
+                                                 MAX_SO_BUFFERS * 16, 256,
+                                                 &so_offset, &so_ptr))
+                       return;
+
+               for (uint32_t i = 0; i < MAX_SO_BUFFERS; i++) {
+                       struct radv_buffer *buffer = sb[i].buffer;
+                       uint32_t *desc = &((uint32_t *)so_ptr)[i * 4];
+
+                       if (!(so->enabled_mask & (1 << i)))
+                               continue;
+
+                       va = radv_buffer_get_va(buffer->bo) + buffer->offset;
+
+                       /* Set the descriptor.
+                        *
+                        * On VI, the format must be non-INVALID, otherwise
+                        * the buffer will be considered not bound and store
+                        * instructions will be no-ops.
+                        */
+                       desc[0] = va;
+                       desc[1] = S_008F04_BASE_ADDRESS_HI(va >> 32);
+                       desc[2] = 0xffffffff;
+                       desc[3] = S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) |
+                                 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) |
+                                 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) |
+                                 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W) |
+                                 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32);
+               }
+
+               va = radv_buffer_get_va(cmd_buffer->upload.upload_bo);
+               va += so_offset;
+
+               radv_emit_streamout_buffers(cmd_buffer, va);
+       }
+
+       cmd_buffer->state.dirty &= ~RADV_CMD_DIRTY_STREAMOUT_BUFFER;
+}
+
+static void
 radv_upload_graphics_shader_descriptors(struct radv_cmd_buffer *cmd_buffer, bool pipeline_is_dirty)
 {
        radv_flush_vertex_descriptors(cmd_buffer, pipeline_is_dirty);
+       radv_flush_streamout_descriptors(cmd_buffer);
        radv_flush_descriptors(cmd_buffer, VK_SHADER_STAGE_ALL_GRAPHICS);
        radv_flush_constants(cmd_buffer, VK_SHADER_STAGE_ALL_GRAPHICS);
 }
@@ -1969,7 +2070,8 @@ static void radv_stage_flush(struct radv_cmd_buffer *cmd_buffer,
                                     VK_PIPELINE_STAGE_VERTEX_SHADER_BIT |
                                     VK_PIPELINE_STAGE_TESSELLATION_CONTROL_SHADER_BIT |
                                     VK_PIPELINE_STAGE_TESSELLATION_EVALUATION_SHADER_BIT |
-                                    VK_PIPELINE_STAGE_GEOMETRY_SHADER_BIT)) {
+                                    VK_PIPELINE_STAGE_GEOMETRY_SHADER_BIT |
+                                    VK_PIPELINE_STAGE_TRANSFORM_FEEDBACK_BIT_EXT)) {
                cmd_buffer->state.flush_bits |= RADV_CMD_FLAG_VS_PARTIAL_FLUSH;
        }
 }
@@ -1993,6 +2095,8 @@ radv_src_access_flush(struct radv_cmd_buffer *cmd_buffer,
        for_each_bit(b, src_flags) {
                switch ((VkAccessFlagBits)(1 << b)) {
                case VK_ACCESS_SHADER_WRITE_BIT:
+               case VK_ACCESS_TRANSFORM_FEEDBACK_WRITE_BIT_EXT:
+               case VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_WRITE_BIT_EXT:
                        flush_bits |= RADV_CMD_FLAG_WRITEBACK_GLOBAL_L2;
                        break;
                case VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT:
@@ -2062,6 +2166,7 @@ radv_dst_access_flush(struct radv_cmd_buffer *cmd_buffer,
                switch ((VkAccessFlagBits)(1 << b)) {
                case VK_ACCESS_INDIRECT_COMMAND_READ_BIT:
                case VK_ACCESS_INDEX_READ_BIT:
+               case VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_WRITE_BIT_EXT:
                        break;
                case VK_ACCESS_UNIFORM_READ_BIT:
                        flush_bits |= RADV_CMD_FLAG_INV_VMEM_L1 | RADV_CMD_FLAG_INV_SMEM_L1;
@@ -2716,6 +2821,7 @@ void radv_CmdBindPipeline(
                cmd_buffer->state.prefetch_L2_mask |= RADV_PREFETCH_SHADERS;
 
                radv_bind_dynamic_state(cmd_buffer, &pipeline->dynamic_state);
+               radv_bind_streamout_state(cmd_buffer, pipeline);
 
                if (pipeline->graphics.esgs_ring_size > cmd_buffer->esgs_ring_size_needed)
                        cmd_buffer->esgs_ring_size_needed = pipeline->graphics.esgs_ring_size;
@@ -3138,12 +3244,13 @@ static void radv_emit_view_index(struct radv_cmd_buffer *cmd_buffer, unsigned in
 
 static void
 radv_cs_emit_draw_packet(struct radv_cmd_buffer *cmd_buffer,
-                         uint32_t vertex_count)
+                         uint32_t vertex_count,
+                        bool use_opaque)
 {
        radeon_emit(cmd_buffer->cs, PKT3(PKT3_DRAW_INDEX_AUTO, 1, cmd_buffer->state.predicating));
        radeon_emit(cmd_buffer->cs, vertex_count);
        radeon_emit(cmd_buffer->cs, V_0287F0_DI_SRC_SEL_AUTO_INDEX |
-                                   S_0287F0_USE_OPAQUE(0));
+                                   S_0287F0_USE_OPAQUE(use_opaque));
 }
 
 static void
@@ -3247,6 +3354,12 @@ struct radv_draw_info {
         */
        struct radv_buffer *count_buffer;
        uint64_t count_buffer_offset;
+
+       /**
+        * Stream output parameters resource.
+        */
+       struct radv_buffer *strmout_buffer;
+       uint64_t strmout_buffer_offset;
 };
 
 static void
@@ -3257,6 +3370,27 @@ radv_emit_draw_packets(struct radv_cmd_buffer *cmd_buffer,
        struct radeon_winsys *ws = cmd_buffer->device->ws;
        struct radeon_cmdbuf *cs = cmd_buffer->cs;
 
+       if (info->strmout_buffer) {
+               uint64_t va = radv_buffer_get_va(info->strmout_buffer->bo);
+
+               va += info->strmout_buffer->offset +
+                     info->strmout_buffer_offset;
+
+               radeon_set_context_reg(cs, R_028B30_VGT_STRMOUT_DRAW_OPAQUE_VERTEX_STRIDE,
+                                      info->stride);
+
+               radeon_emit(cs, PKT3(PKT3_COPY_DATA, 4, 0));
+               radeon_emit(cs, COPY_DATA_SRC_SEL(COPY_DATA_SRC_MEM) |
+                               COPY_DATA_DST_SEL(COPY_DATA_REG) |
+                               COPY_DATA_WR_CONFIRM);
+               radeon_emit(cs, va);
+               radeon_emit(cs, va >> 32);
+               radeon_emit(cs, R_028B2C_VGT_STRMOUT_DRAW_OPAQUE_BUFFER_FILLED_SIZE >> 2);
+               radeon_emit(cs, 0); /* unused */
+
+               radv_cs_add_buffer(ws, cs, info->strmout_buffer->bo);
+       }
+
        if (info->indirect) {
                uint64_t va = radv_buffer_get_va(info->indirect->bo);
                uint64_t count_va = 0;
@@ -3341,14 +3475,17 @@ radv_emit_draw_packets(struct radv_cmd_buffer *cmd_buffer,
                        }
                } else {
                        if (!state->subpass->view_mask) {
-                               radv_cs_emit_draw_packet(cmd_buffer, info->count);
+                               radv_cs_emit_draw_packet(cmd_buffer,
+                                                        info->count,
+                                                        !!info->strmout_buffer);
                        } else {
                                unsigned i;
                                for_each_bit(i, state->subpass->view_mask) {
                                        radv_emit_view_index(cmd_buffer, i);
 
                                        radv_cs_emit_draw_packet(cmd_buffer,
-                                                                info->count);
+                                                                info->count,
+                                                                !!info->strmout_buffer);
                                }
                        }
                }
@@ -3442,6 +3579,8 @@ static void
 radv_draw(struct radv_cmd_buffer *cmd_buffer,
          const struct radv_draw_info *info)
 {
+       struct radeon_info *rad_info =
+               &cmd_buffer->device->physical_device->rad_info;
        bool has_prefetch =
                cmd_buffer->device->physical_device->rad_info.chip_class >= CIK;
        bool pipeline_is_dirty =
@@ -3511,6 +3650,16 @@ radv_draw(struct radv_cmd_buffer *cmd_buffer,
                }
        }
 
+       /* Workaround for a VGT hang when streamout is enabled.
+        * It must be done after drawing.
+        */
+       if (cmd_buffer->state.streamout.streamout_enabled &&
+           (rad_info->family == CHIP_HAWAII ||
+            rad_info->family == CHIP_TONGA ||
+            rad_info->family == CHIP_FIJI)) {
+               cmd_buffer->state.flush_bits |= RADV_CMD_FLAG_VGT_STREAMOUT_SYNC;
+       }
+
        assert(cmd_buffer->cs->cdw <= cdw_max);
        radv_cmd_buffer_after_draw(cmd_buffer, RADV_CMD_FLAG_PS_PARTIAL_FLUSH);
 }
@@ -4486,3 +4635,229 @@ void radv_CmdEndConditionalRenderingEXT(
        cmd_buffer->state.predication_type = -1;
        cmd_buffer->state.predication_va = 0;
 }
+
+/* VK_EXT_transform_feedback */
+void radv_CmdBindTransformFeedbackBuffersEXT(
+    VkCommandBuffer                             commandBuffer,
+    uint32_t                                    firstBinding,
+    uint32_t                                    bindingCount,
+    const VkBuffer*                             pBuffers,
+    const VkDeviceSize*                         pOffsets,
+    const VkDeviceSize*                         pSizes)
+{
+       RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
+       struct radv_streamout_binding *sb = cmd_buffer->streamout_bindings;
+       uint8_t enabled_mask = 0;
+
+       assert(firstBinding + bindingCount <= MAX_SO_BUFFERS);
+       for (uint32_t i = 0; i < bindingCount; i++) {
+               uint32_t idx = firstBinding + i;
+
+               sb[idx].buffer = radv_buffer_from_handle(pBuffers[i]);
+               sb[idx].offset = pOffsets[i];
+               sb[idx].size = pSizes[i];
+
+               radv_cs_add_buffer(cmd_buffer->device->ws, cmd_buffer->cs,
+                                  sb[idx].buffer->bo);
+
+               enabled_mask |= 1 << idx;
+       }
+
+       cmd_buffer->state.streamout.enabled_mask = enabled_mask;
+
+       cmd_buffer->state.dirty |= RADV_CMD_DIRTY_STREAMOUT_BUFFER;
+}
+
+static void
+radv_emit_streamout_enable(struct radv_cmd_buffer *cmd_buffer)
+{
+       struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+       struct radeon_cmdbuf *cs = cmd_buffer->cs;
+
+       radeon_set_context_reg_seq(cs, R_028B94_VGT_STRMOUT_CONFIG, 2);
+       radeon_emit(cs,
+                   S_028B94_STREAMOUT_0_EN(so->streamout_enabled) |
+                   S_028B94_RAST_STREAM(0) |
+                   S_028B94_STREAMOUT_1_EN(so->streamout_enabled) |
+                   S_028B94_STREAMOUT_2_EN(so->streamout_enabled) |
+                   S_028B94_STREAMOUT_3_EN(so->streamout_enabled));
+       radeon_emit(cs, so->hw_enabled_mask &
+                       so->enabled_stream_buffers_mask);
+}
+
+static void
+radv_set_streamout_enable(struct radv_cmd_buffer *cmd_buffer, bool enable)
+{
+       struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+       bool old_streamout_enabled = so->streamout_enabled;
+       uint32_t old_hw_enabled_mask = so->hw_enabled_mask;
+
+       so->streamout_enabled = enable;
+
+       so->hw_enabled_mask = so->enabled_mask |
+                             (so->enabled_mask << 4) |
+                             (so->enabled_mask << 8) |
+                             (so->enabled_mask << 12);
+
+       if ((old_streamout_enabled != so->streamout_enabled) ||
+           (old_hw_enabled_mask != so->hw_enabled_mask))
+               radv_emit_streamout_enable(cmd_buffer);
+}
+
+static void radv_flush_vgt_streamout(struct radv_cmd_buffer *cmd_buffer)
+{
+       struct radeon_cmdbuf *cs = cmd_buffer->cs;
+       unsigned reg_strmout_cntl;
+
+       /* The register is at different places on different ASICs. */
+       if (cmd_buffer->device->physical_device->rad_info.chip_class >= CIK) {
+               reg_strmout_cntl = R_0300FC_CP_STRMOUT_CNTL;
+               radeon_set_uconfig_reg(cs, reg_strmout_cntl, 0);
+       } else {
+               reg_strmout_cntl = R_0084FC_CP_STRMOUT_CNTL;
+               radeon_set_config_reg(cs, reg_strmout_cntl, 0);
+       }
+
+       radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
+       radeon_emit(cs, EVENT_TYPE(EVENT_TYPE_SO_VGTSTREAMOUT_FLUSH) | EVENT_INDEX(0));
+
+       radeon_emit(cs, PKT3(PKT3_WAIT_REG_MEM, 5, 0));
+       radeon_emit(cs, WAIT_REG_MEM_EQUAL); /* wait until the register is equal to the reference value */
+       radeon_emit(cs, reg_strmout_cntl >> 2);  /* register */
+       radeon_emit(cs, 0);
+       radeon_emit(cs, S_0084FC_OFFSET_UPDATE_DONE(1)); /* reference value */
+       radeon_emit(cs, S_0084FC_OFFSET_UPDATE_DONE(1)); /* mask */
+       radeon_emit(cs, 4); /* poll interval */
+}
+
+void radv_CmdBeginTransformFeedbackEXT(
+    VkCommandBuffer                             commandBuffer,
+    uint32_t                                    firstBuffer,
+    uint32_t                                    bufferCount,
+    const VkBuffer*                             pCounterBuffers,
+    const VkDeviceSize*                         pCounterBufferOffsets)
+{
+       RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
+       struct radv_streamout_binding *sb = cmd_buffer->streamout_bindings;
+       struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+       struct radeon_cmdbuf *cs = cmd_buffer->cs;
+
+       radv_flush_vgt_streamout(cmd_buffer);
+
+       assert(firstBuffer + bufferCount <= MAX_SO_BUFFERS);
+       for (uint32_t i = firstBuffer; i < bufferCount; i++) {
+               if (!(so->enabled_mask & (1 << i)))
+                       continue;
+
+               /* SI binds streamout buffers as shader resources.
+                * VGT only counts primitives and tells the shader through
+                * SGPRs what to do.
+                */
+               radeon_set_context_reg_seq(cs, R_028AD0_VGT_STRMOUT_BUFFER_SIZE_0 + 16*i, 2);
+               radeon_emit(cs, (sb[i].offset + sb[i].size) >> 2);      /* BUFFER_SIZE (in DW) */
+               radeon_emit(cs, so->stride_in_dw[i]);                   /* VTX_STRIDE (in DW) */
+
+               if (pCounterBuffers && pCounterBuffers[i]) {
+                       /* The array of counter buffers is optional. */
+                       RADV_FROM_HANDLE(radv_buffer, buffer, pCounterBuffers[i]);
+                       uint64_t va = radv_buffer_get_va(buffer->bo);
+
+                       va += buffer->offset + pCounterBufferOffsets[i];
+
+                       /* Append */
+                       radeon_emit(cs, PKT3(PKT3_STRMOUT_BUFFER_UPDATE, 4, 0));
+                       radeon_emit(cs, STRMOUT_SELECT_BUFFER(i) |
+                                       STRMOUT_DATA_TYPE(1) | /* offset in bytes */
+                                       STRMOUT_OFFSET_SOURCE(STRMOUT_OFFSET_FROM_MEM)); /* control */
+                       radeon_emit(cs, 0); /* unused */
+                       radeon_emit(cs, 0); /* unused */
+                       radeon_emit(cs, va); /* src address lo */
+                       radeon_emit(cs, va >> 32); /* src address hi */
+
+                       radv_cs_add_buffer(cmd_buffer->device->ws, cs, buffer->bo);
+               } else {
+                       /* Start from the beginning. */
+                       radeon_emit(cs, PKT3(PKT3_STRMOUT_BUFFER_UPDATE, 4, 0));
+                       radeon_emit(cs, STRMOUT_SELECT_BUFFER(i) |
+                                       STRMOUT_DATA_TYPE(1) | /* offset in bytes */
+                                       STRMOUT_OFFSET_SOURCE(STRMOUT_OFFSET_FROM_PACKET)); /* control */
+                       radeon_emit(cs, 0); /* unused */
+                       radeon_emit(cs, 0); /* unused */
+                       radeon_emit(cs, sb[i].offset >> 2); /* buffer offset in DW */
+                       radeon_emit(cs, 0); /* unused */
+               }
+       }
+
+       radv_set_streamout_enable(cmd_buffer, true);
+}
+
+void radv_CmdEndTransformFeedbackEXT(
+    VkCommandBuffer                             commandBuffer,
+    uint32_t                                    firstBuffer,
+    uint32_t                                    bufferCount,
+    const VkBuffer*                             pCounterBuffers,
+    const VkDeviceSize*                         pCounterBufferOffsets)
+{
+       RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
+       struct radv_streamout_state *so = &cmd_buffer->state.streamout;
+       struct radeon_cmdbuf *cs = cmd_buffer->cs;
+
+       radv_flush_vgt_streamout(cmd_buffer);
+
+       assert(firstBuffer + bufferCount <= MAX_SO_BUFFERS);
+       for (uint32_t i = firstBuffer; i < bufferCount; i++) {
+               if (!(so->enabled_mask & (1 << i)))
+                       continue;
+
+               if (pCounterBuffers && pCounterBuffers[i]) {
+                       /* The array of counters buffer is optional. */
+                       RADV_FROM_HANDLE(radv_buffer, buffer, pCounterBuffers[i]);
+                       uint64_t va = radv_buffer_get_va(buffer->bo);
+
+                       va += buffer->offset + pCounterBufferOffsets[i];
+
+                       radeon_emit(cs, PKT3(PKT3_STRMOUT_BUFFER_UPDATE, 4, 0));
+                       radeon_emit(cs, STRMOUT_SELECT_BUFFER(i) |
+                                       STRMOUT_DATA_TYPE(1) | /* offset in bytes */
+                                       STRMOUT_OFFSET_SOURCE(STRMOUT_OFFSET_NONE) |
+                                       STRMOUT_STORE_BUFFER_FILLED_SIZE); /* control */
+                       radeon_emit(cs, va);            /* dst address lo */
+                       radeon_emit(cs, va >> 32);      /* dst address hi */
+                       radeon_emit(cs, 0);             /* unused */
+                       radeon_emit(cs, 0);             /* unused */
+
+                       radv_cs_add_buffer(cmd_buffer->device->ws, cs, buffer->bo);
+               }
+
+               /* Deactivate transform feedback by zeroing the buffer size.
+                * The counters (primitives generated, primitives emitted) may
+                * be enabled even if there is not buffer bound. This ensures
+                * that the primitives-emitted query won't increment.
+                */
+               radeon_set_context_reg(cs, R_028AD0_VGT_STRMOUT_BUFFER_SIZE_0 + 16*i, 0);
+       }
+
+       radv_set_streamout_enable(cmd_buffer, false);
+}
+
+void radv_CmdDrawIndirectByteCountEXT(
+    VkCommandBuffer                             commandBuffer,
+    uint32_t                                    instanceCount,
+    uint32_t                                    firstInstance,
+    VkBuffer                                    _counterBuffer,
+    VkDeviceSize                                counterBufferOffset,
+    uint32_t                                    counterOffset,
+    uint32_t                                    vertexStride)
+{
+       RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
+       RADV_FROM_HANDLE(radv_buffer, counterBuffer, _counterBuffer);
+       struct radv_draw_info info = {};
+
+       info.instance_count = instanceCount;
+       info.first_instance = firstInstance;
+       info.strmout_buffer = counterBuffer;
+       info.strmout_buffer_offset = counterBufferOffset;
+       info.stride = vertexStride;
+
+       radv_draw(cmd_buffer, &info);
+}
index 1c6be30..508fbb2 100644 (file)
@@ -840,6 +840,13 @@ void radv_GetPhysicalDeviceFeatures2(
                        features->vertexAttributeInstanceRateZeroDivisor = VK_TRUE;
                        break;
                }
+               case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TRANSFORM_FEEDBACK_FEATURES_EXT: {
+                       VkPhysicalDeviceTransformFeedbackFeaturesEXT *features =
+                               (VkPhysicalDeviceTransformFeedbackFeaturesEXT*)ext;
+                       features->transformFeedback = true;
+                       features->geometryStreams = true;
+                       break;
+               }
                default:
                        break;
                }
@@ -1213,6 +1220,21 @@ void radv_GetPhysicalDeviceProperties2(
                        };
                        break;
                }
+               case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TRANSFORM_FEEDBACK_PROPERTIES_EXT: {
+                       VkPhysicalDeviceTransformFeedbackPropertiesEXT *properties =
+                               (VkPhysicalDeviceTransformFeedbackPropertiesEXT *)ext;
+                       properties->maxTransformFeedbackStreams = MAX_SO_STREAMS;
+                       properties->maxTransformFeedbackBuffers = MAX_SO_BUFFERS;
+                       properties->maxTransformFeedbackBufferSize = UINT32_MAX;
+                       properties->maxTransformFeedbackStreamDataSize = 512;
+                       properties->maxTransformFeedbackBufferDataSize = UINT32_MAX;
+                       properties->maxTransformFeedbackBufferDataStride = 512;
+                       properties->transformFeedbackQueries = true;
+                       properties->transformFeedbackStreamsLinesTriangles = false;
+                       properties->transformFeedbackRasterizationStreamSelect = false;
+                       properties->transformFeedbackDraw = true;
+                       break;
+               }
                default:
                        break;
                }
index 0024bf0..6bdf988 100644 (file)
@@ -109,6 +109,7 @@ 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_transform_feedback',                1, True),
     Extension('VK_EXT_vertex_attribute_divisor',          3, True),
     Extension('VK_AMD_draw_indirect_count',               1, True),
     Extension('VK_AMD_gcn_shader',                        1, True),
index f698115..4babb24 100644 (file)
@@ -3482,6 +3482,22 @@ radv_compute_vertex_input_state(struct radv_pipeline *pipeline,
        }
 }
 
+static struct radv_shader_variant *
+radv_pipeline_get_streamout_shader(struct radv_pipeline *pipeline)
+{
+       int i;
+
+       for (i = MESA_SHADER_GEOMETRY; i >= MESA_SHADER_VERTEX; i--) {
+               struct radv_shader_variant *shader =
+                       radv_get_shader(pipeline, i);
+
+               if (shader && shader->info.info.so.num_outputs > 0)
+                       return shader;
+       }
+
+       return NULL;
+}
+
 static VkResult
 radv_pipeline_init(struct radv_pipeline *pipeline,
                   struct radv_device *device,
@@ -3597,6 +3613,9 @@ radv_pipeline_init(struct radv_pipeline *pipeline,
                        pipeline->graphics.vtx_emit_num = 2;
        }
 
+       /* Find the last vertex shader stage that eventually uses streamout. */
+       pipeline->streamout_shader = radv_pipeline_get_streamout_shader(pipeline);
+
        result = radv_pipeline_scratch_init(device, pipeline);
        radv_pipeline_generate_pm4(pipeline, pCreateInfo, extra, &blend, &tess, &gs, prim, gs_out);
 
index 14ae0a4..7e9e82e 100644 (file)
@@ -843,6 +843,7 @@ enum radv_cmd_dirty_bits {
        RADV_CMD_DIRTY_INDEX_BUFFER                      = 1 << 11,
        RADV_CMD_DIRTY_FRAMEBUFFER                       = 1 << 12,
        RADV_CMD_DIRTY_VERTEX_BUFFER                     = 1 << 13,
+       RADV_CMD_DIRTY_STREAMOUT_BUFFER                  = 1 << 14,
 };
 
 enum radv_cmd_flush_bits {
@@ -868,6 +869,7 @@ enum radv_cmd_flush_bits {
        /* Pipeline query controls. */
        RADV_CMD_FLAG_START_PIPELINE_STATS = 1 << 13,
        RADV_CMD_FLAG_STOP_PIPELINE_STATS  = 1 << 14,
+       RADV_CMD_FLAG_VGT_STREAMOUT_SYNC   = 1 << 15,
 
        RADV_CMD_FLUSH_AND_INV_FRAMEBUFFER = (RADV_CMD_FLAG_FLUSH_AND_INV_CB |
                                              RADV_CMD_FLAG_FLUSH_AND_INV_CB_META |
@@ -880,6 +882,29 @@ struct radv_vertex_binding {
        VkDeviceSize                                 offset;
 };
 
+struct radv_streamout_binding {
+       struct radv_buffer *buffer;
+       VkDeviceSize offset;
+       VkDeviceSize size;
+};
+
+struct radv_streamout_state {
+       /* Mask of bound streamout buffers. */
+       uint8_t enabled_mask;
+
+       /* External state that comes from the last vertex stage, it must be
+        * set explicitely when binding a new graphics pipeline.
+        */
+       uint16_t stride_in_dw[MAX_SO_BUFFERS];
+       uint32_t enabled_stream_buffers_mask; /* stream0 buffers0-3 in 4 LSB */
+
+       /* State of VGT_STRMOUT_BUFFER_(CONFIG|END) */
+       uint32_t hw_enabled_mask;
+
+       /* State of VGT_STRMOUT_(CONFIG|EN) */
+       bool streamout_enabled;
+};
+
 struct radv_viewport_state {
        uint32_t                                          count;
        VkViewport                                        viewports[MAX_VIEWPORTS];
@@ -987,6 +1012,7 @@ struct radv_cmd_state {
        const struct radv_subpass *                         subpass;
        struct radv_dynamic_state                     dynamic;
        struct radv_attachment_state *                attachments;
+       struct radv_streamout_state                  streamout;
        VkRect2D                                     render_area;
 
        /* Index buffer */
@@ -1056,6 +1082,7 @@ struct radv_cmd_buffer {
        struct radeon_cmdbuf *cs;
        struct radv_cmd_state state;
        struct radv_vertex_binding                   vertex_bindings[MAX_VBS];
+       struct radv_streamout_binding                streamout_bindings[MAX_SO_BUFFERS];
        uint32_t queue_family_index;
 
        uint8_t push_constants[MAX_PUSH_CONSTANTS_SIZE];
@@ -1353,6 +1380,9 @@ struct radv_pipeline {
 
        unsigned max_waves;
        unsigned scratch_bytes_per_wave;
+
+       /* Not NULL if graphics pipeline uses streamout. */
+       struct radv_shader_variant *streamout_shader;
 };
 
 static inline bool radv_pipeline_has_gs(const struct radv_pipeline *pipeline)
index 63a2b6a..5a326c9 100644 (file)
@@ -789,6 +789,9 @@ VkResult radv_CreateQueryPool(
        case VK_QUERY_TYPE_TIMESTAMP:
                pool->stride = 8;
                break;
+       case VK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT:
+               pool->stride = 32;
+               break;
        default:
                unreachable("creating unhandled query type");
        }
@@ -951,6 +954,44 @@ VkResult radv_GetQueryPoolResults(
                        }
                        break;
                }
+               case VK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT: {
+                       volatile uint64_t const *src64 = (volatile uint64_t const *)src;
+                       uint64_t num_primitives_written;
+                       uint64_t primitive_storage_needed;
+
+                       /* SAMPLE_STREAMOUTSTATS stores this structure:
+                        * {
+                        *      u64 NumPrimitivesWritten;
+                        *      u64 PrimitiveStorageNeeded;
+                        * }
+                        */
+                       available = 1;
+                       for (int j = 0; j < 4; j++) {
+                               if (!(src64[j] & 0x8000000000000000UL))
+                                       available = 0;
+                       }
+
+                       if (!available && !(flags & VK_QUERY_RESULT_PARTIAL_BIT)) {
+                               result = VK_NOT_READY;
+                               break;
+                       }
+
+                       num_primitives_written = src64[3] - src64[1];
+                       primitive_storage_needed = src64[2] - src64[0];
+
+                       if (flags & VK_QUERY_RESULT_64_BIT) {
+                               *(uint64_t *)dest = num_primitives_written;
+                               dest += 8;
+                               *(uint64_t *)dest = primitive_storage_needed;
+                               dest += 8;
+                       } else {
+                               *(uint32_t *)dest = num_primitives_written;
+                               dest += 4;
+                               *(uint32_t *)dest = primitive_storage_needed;
+                               dest += 4;
+                       }
+                       break;
+               }
                default:
                        unreachable("trying to get results of unhandled query type");
                }
@@ -1109,10 +1150,22 @@ void radv_CmdResetQueryPool(
        }
 }
 
+static unsigned event_type_for_stream(unsigned stream)
+{
+       switch (stream) {
+       default:
+       case 0: return V_028A90_SAMPLE_STREAMOUTSTATS;
+       case 1: return V_028A90_SAMPLE_STREAMOUTSTATS1;
+       case 2: return V_028A90_SAMPLE_STREAMOUTSTATS2;
+       case 3: return V_028A90_SAMPLE_STREAMOUTSTATS3;
+       }
+}
+
 static void emit_begin_query(struct radv_cmd_buffer *cmd_buffer,
                             uint64_t va,
                             VkQueryType query_type,
-                            VkQueryControlFlags flags)
+                            VkQueryControlFlags flags,
+                            uint32_t index)
 {
        struct radeon_cmdbuf *cs = cmd_buffer->cs;
        switch (query_type) {
@@ -1161,6 +1214,16 @@ static void emit_begin_query(struct radv_cmd_buffer *cmd_buffer,
                radeon_emit(cs, va);
                radeon_emit(cs, va >> 32);
                break;
+       case VK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT:
+               radeon_check_space(cmd_buffer->device->ws, cs, 4);
+
+               assert(index < MAX_SO_STREAMS);
+
+               radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 2, 0));
+               radeon_emit(cs, EVENT_TYPE(event_type_for_stream(index)) | EVENT_INDEX(3));
+               radeon_emit(cs, va);
+               radeon_emit(cs, va >> 32);
+               break;
        default:
                unreachable("beginning unhandled query type");
        }
@@ -1169,7 +1232,7 @@ static void emit_begin_query(struct radv_cmd_buffer *cmd_buffer,
 
 static void emit_end_query(struct radv_cmd_buffer *cmd_buffer,
                           uint64_t va, uint64_t avail_va,
-                          VkQueryType query_type)
+                          VkQueryType query_type, uint32_t index)
 {
        struct radeon_cmdbuf *cs = cmd_buffer->cs;
        switch (query_type) {
@@ -1215,16 +1278,27 @@ static void emit_end_query(struct radv_cmd_buffer *cmd_buffer,
                                           avail_va, 0, 1,
                                           cmd_buffer->gfx9_eop_bug_va);
                break;
+       case VK_QUERY_TYPE_TRANSFORM_FEEDBACK_STREAM_EXT:
+               radeon_check_space(cmd_buffer->device->ws, cs, 4);
+
+               assert(index < MAX_SO_STREAMS);
+
+               radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 2, 0));
+               radeon_emit(cs, EVENT_TYPE(event_type_for_stream(index)) | EVENT_INDEX(3));
+               radeon_emit(cs, (va + 16));
+               radeon_emit(cs, (va + 16) >> 32);
+               break;
        default:
                unreachable("ending unhandled query type");
        }
 }
 
-void radv_CmdBeginQuery(
+void radv_CmdBeginQueryIndexedEXT(
     VkCommandBuffer                             commandBuffer,
     VkQueryPool                                 queryPool,
     uint32_t                                    query,
-    VkQueryControlFlags                         flags)
+    VkQueryControlFlags                         flags,
+    uint32_t                                    index)
 {
        RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
        RADV_FROM_HANDLE(radv_query_pool, pool, queryPool);
@@ -1247,14 +1321,23 @@ void radv_CmdBeginQuery(
 
        va += pool->stride * query;
 
-       emit_begin_query(cmd_buffer, va, pool->type, flags);
+       emit_begin_query(cmd_buffer, va, pool->type, flags, index);
 }
 
+void radv_CmdBeginQuery(
+    VkCommandBuffer                             commandBuffer,
+    VkQueryPool                                 queryPool,
+    uint32_t                                    query,
+    VkQueryControlFlags                         flags)
+{
+       radv_CmdBeginQueryIndexedEXT(commandBuffer, queryPool, query, flags, 0);
+}
 
-void radv_CmdEndQuery(
+void radv_CmdEndQueryIndexedEXT(
     VkCommandBuffer                             commandBuffer,
     VkQueryPool                                 queryPool,
-    uint32_t                                    query)
+    uint32_t                                    query,
+    uint32_t                                    index)
 {
        RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
        RADV_FROM_HANDLE(radv_query_pool, pool, queryPool);
@@ -1265,7 +1348,7 @@ void radv_CmdEndQuery(
        /* Do not need to add the pool BO to the list because the query must
         * currently be active, which means the BO is already in the list.
         */
-       emit_end_query(cmd_buffer, va, avail_va, pool->type);
+       emit_end_query(cmd_buffer, va, avail_va, pool->type, index);
 
        /*
         * For multiview we have to emit a query for each bit in the mask,
@@ -1282,12 +1365,20 @@ void radv_CmdEndQuery(
                for (unsigned i = 1; i < util_bitcount(cmd_buffer->state.subpass->view_mask); i++) {
                        va += pool->stride;
                        avail_va += 4;
-                       emit_begin_query(cmd_buffer, va, pool->type, 0);
-                       emit_end_query(cmd_buffer, va, avail_va, pool->type);
+                       emit_begin_query(cmd_buffer, va, pool->type, 0, 0);
+                       emit_end_query(cmd_buffer, va, avail_va, pool->type, 0);
                }
        }
 }
 
+void radv_CmdEndQuery(
+    VkCommandBuffer                             commandBuffer,
+    VkQueryPool                                 queryPool,
+    uint32_t                                    query)
+{
+       radv_CmdEndQueryIndexedEXT(commandBuffer, queryPool, query, 0);
+}
+
 void radv_CmdWriteTimestamp(
     VkCommandBuffer                             commandBuffer,
     VkPipelineStageFlagBits                     pipelineStage,
index edeaefb..f98ca6b 100644 (file)
@@ -243,6 +243,8 @@ radv_shader_compile_to_nir(struct radv_device *device,
                                .runtime_descriptor_array = true,
                                .stencil_export = true,
                                .storage_16bit = true,
+                               .geometry_streams = true,
+                               .transform_feedback = true,
                        },
                };
                entry_point = spirv_to_nir(spirv, module->size / 4,
@@ -434,7 +436,12 @@ radv_fill_shader_variant(struct radv_device *device,
        variant->code_size = radv_get_shader_binary_size(binary);
        variant->rsrc2 = S_00B12C_USER_SGPR(variant->info.num_user_sgprs) |
                         S_00B12C_USER_SGPR_MSB(variant->info.num_user_sgprs >> 5) |
-                        S_00B12C_SCRATCH_EN(scratch_enabled);
+                        S_00B12C_SCRATCH_EN(scratch_enabled) |
+                        S_00B12C_SO_BASE0_EN(!!info->so.strides[0]) |
+                        S_00B12C_SO_BASE1_EN(!!info->so.strides[1]) |
+                        S_00B12C_SO_BASE2_EN(!!info->so.strides[2]) |
+                        S_00B12C_SO_BASE3_EN(!!info->so.strides[3]) |
+                        S_00B12C_SO_EN(!!info->so.num_outputs);
 
        variant->rsrc1 = S_00B848_VGPRS((variant->config.num_vgprs - 1) / 4) |
                S_00B848_SGPRS((variant->config.num_sgprs - 1) / 8) |
index 52daf99..214bcea 100644 (file)
@@ -883,6 +883,12 @@ si_cs_emit_cache_flush(struct radeon_cmdbuf *cs,
                radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_FLUSH) | EVENT_INDEX(0));
        }
 
+       /* VGT streamout state sync */
+       if (flush_bits & RADV_CMD_FLAG_VGT_STREAMOUT_SYNC) {
+               radeon_emit(cs, PKT3(PKT3_EVENT_WRITE, 0, 0));
+               radeon_emit(cs, EVENT_TYPE(V_028A90_VGT_STREAMOUT_SYNC) | EVENT_INDEX(0));
+       }
+
        /* Make sure ME is idle (it executes most packets) before continuing.
         * This prevents read-after-write hazards between PFP and ME.
         */