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-rw-r--r--src/gallium/drivers/softpipe/sp_compute.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_compute.c b/src/gallium/drivers/softpipe/sp_compute.c
new file mode 100644
index 00000000000..d5b5913f6a2
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_compute.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright 2016 Red Hat.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "util/u_inlines.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "util/u_pstipple.h"
+#include "pipe/p_shader_tokens.h"
+#include "draw/draw_context.h"
+#include "draw/draw_vertex.h"
+#include "sp_context.h"
+#include "sp_screen.h"
+#include "sp_state.h"
+#include "sp_texture.h"
+#include "sp_tex_sample.h"
+#include "sp_tex_tile_cache.h"
+#include "tgsi/tgsi_parse.h"
+
+static void
+cs_prepare(const struct sp_compute_shader *cs,
+ struct tgsi_exec_machine *machine,
+ int w, int h, int d,
+ int g_w, int g_h, int g_d,
+ int b_w, int b_h, int b_d,
+ struct tgsi_sampler *sampler,
+ struct tgsi_image *image,
+ struct tgsi_buffer *buffer )
+{
+ int j;
+ /*
+ * Bind tokens/shader to the interpreter's machine state.
+ */
+ tgsi_exec_machine_bind_shader(machine,
+ cs->tokens,
+ sampler, image, buffer);
+
+ if (machine->SysSemanticToIndex[TGSI_SEMANTIC_THREAD_ID] != -1) {
+ unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_THREAD_ID];
+ for (j = 0; j < TGSI_QUAD_SIZE; j++) {
+ machine->SystemValue[i].xyzw[0].i[j] = w;
+ machine->SystemValue[i].xyzw[1].i[j] = h;
+ machine->SystemValue[i].xyzw[2].i[j] = d;
+ }
+ }
+
+ if (machine->SysSemanticToIndex[TGSI_SEMANTIC_GRID_SIZE] != -1) {
+ unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_GRID_SIZE];
+ for (j = 0; j < TGSI_QUAD_SIZE; j++) {
+ machine->SystemValue[i].xyzw[0].i[j] = g_w;
+ machine->SystemValue[i].xyzw[1].i[j] = g_h;
+ machine->SystemValue[i].xyzw[2].i[j] = g_d;
+ }
+ }
+
+ if (machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_SIZE] != -1) {
+ unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_SIZE];
+ for (j = 0; j < TGSI_QUAD_SIZE; j++) {
+ machine->SystemValue[i].xyzw[0].i[j] = b_w;
+ machine->SystemValue[i].xyzw[1].i[j] = b_h;
+ machine->SystemValue[i].xyzw[2].i[j] = b_d;
+ }
+ }
+}
+
+static bool
+cs_run(const struct sp_compute_shader *cs,
+ int g_w, int g_h, int g_d,
+ struct tgsi_exec_machine *machine, bool restart)
+{
+ if (!restart) {
+ if (machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_ID] != -1) {
+ unsigned i = machine->SysSemanticToIndex[TGSI_SEMANTIC_BLOCK_ID];
+ int j;
+ for (j = 0; j < TGSI_QUAD_SIZE; j++) {
+ machine->SystemValue[i].xyzw[0].i[j] = g_w;
+ machine->SystemValue[i].xyzw[1].i[j] = g_h;
+ machine->SystemValue[i].xyzw[2].i[j] = g_d;
+ }
+ }
+ machine->NonHelperMask = (1 << 1) - 1;
+ }
+
+ tgsi_exec_machine_run(machine, restart ? machine->pc : 0);
+
+ if (machine->pc != -1)
+ return true;
+ return false;
+}
+
+static void
+run_workgroup(const struct sp_compute_shader *cs,
+ int g_w, int g_h, int g_d, int num_threads,
+ struct tgsi_exec_machine **machines)
+{
+ int i;
+ bool grp_hit_barrier, restart_threads = false;
+
+ do {
+ grp_hit_barrier = false;
+ for (i = 0; i < num_threads; i++) {
+ grp_hit_barrier |= cs_run(cs, g_w, g_h, g_d, machines[i], restart_threads);
+ }
+ restart_threads = false;
+ if (grp_hit_barrier) {
+ grp_hit_barrier = false;
+ restart_threads = true;
+ }
+ } while (restart_threads);
+}
+
+static void
+cs_delete(const struct sp_compute_shader *cs,
+ struct tgsi_exec_machine *machine)
+{
+ if (machine->Tokens == cs->tokens) {
+ tgsi_exec_machine_bind_shader(machine, NULL, NULL, NULL, NULL);
+ }
+}
+
+static void
+fill_grid_size(struct pipe_context *context,
+ const struct pipe_grid_info *info,
+ uint32_t grid_size[3])
+{
+ struct pipe_transfer *transfer;
+ uint32_t *params;
+ if (!info->indirect) {
+ grid_size[0] = info->grid[0];
+ grid_size[1] = info->grid[1];
+ grid_size[2] = info->grid[2];
+ return;
+ }
+ params = pipe_buffer_map_range(context, info->indirect,
+ info->indirect_offset,
+ 3 * sizeof(uint32_t),
+ PIPE_TRANSFER_READ,
+ &transfer);
+
+ if (!transfer)
+ return;
+
+ grid_size[0] = params[0];
+ grid_size[1] = params[1];
+ grid_size[2] = params[2];
+ pipe_buffer_unmap(context, transfer);
+}
+
+void
+softpipe_launch_grid(struct pipe_context *context,
+ const struct pipe_grid_info *info)
+{
+ struct softpipe_context *softpipe = softpipe_context(context);
+ struct sp_compute_shader *cs = softpipe->cs;
+ int num_threads_in_group;
+ struct tgsi_exec_machine **machines;
+ int bwidth, bheight, bdepth;
+ int w, h, d, i;
+ int g_w, g_h, g_d;
+ uint32_t grid_size[3];
+ void *local_mem = NULL;
+
+ softpipe_update_compute_samplers(softpipe);
+ bwidth = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH];
+ bheight = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT];
+ bdepth = cs->info.properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH];
+ num_threads_in_group = bwidth * bheight * bdepth;
+
+ fill_grid_size(context, info, grid_size);
+
+ if (cs->shader.req_local_mem) {
+ local_mem = CALLOC(1, cs->shader.req_local_mem);
+ }
+
+ machines = CALLOC(sizeof(struct tgsi_exec_machine *), num_threads_in_group);
+ if (!machines)
+ return;
+
+ /* initialise machines + GRID_SIZE + THREAD_ID + BLOCK_SIZE */
+ for (d = 0; d < bdepth; d++) {
+ for (h = 0; h < bheight; h++) {
+ for (w = 0; w < bwidth; w++) {
+ int idx = w + (h * bwidth) + (d * bheight * bwidth);
+ machines[idx] = tgsi_exec_machine_create(PIPE_SHADER_COMPUTE);
+
+ machines[idx]->LocalMem = local_mem;
+ machines[idx]->LocalMemSize = cs->shader.req_local_mem;
+ cs_prepare(cs, machines[idx],
+ w, h, d,
+ grid_size[0], grid_size[1], grid_size[2],
+ bwidth, bheight, bdepth,
+ (struct tgsi_sampler *)softpipe->tgsi.sampler[PIPE_SHADER_COMPUTE],
+ (struct tgsi_image *)softpipe->tgsi.image[PIPE_SHADER_COMPUTE],
+ (struct tgsi_buffer *)softpipe->tgsi.buffer[PIPE_SHADER_COMPUTE]);
+ tgsi_exec_set_constant_buffers(machines[idx], PIPE_MAX_CONSTANT_BUFFERS,
+ softpipe->mapped_constants[PIPE_SHADER_COMPUTE],
+ softpipe->const_buffer_size[PIPE_SHADER_COMPUTE]);
+ }
+ }
+ }
+
+ for (g_d = 0; g_d < grid_size[2]; g_d++) {
+ for (g_h = 0; g_h < grid_size[1]; g_h++) {
+ for (g_w = 0; g_w < grid_size[0]; g_w++) {
+ run_workgroup(cs, g_w, g_h, g_d, num_threads_in_group, machines);
+ }
+ }
+ }
+
+ for (i = 0; i < num_threads_in_group; i++) {
+ cs_delete(cs, machines[i]);
+ tgsi_exec_machine_destroy(machines[i]);
+ }
+
+ FREE(local_mem);
+ FREE(machines);
+}
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