ilo: hook up launch_grid()

All we need to do is to upload the input data and call
ilo_render_emit_launch_grid() with space checking.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

src/gallium/drivers/ilo/ilo_gpgpu.c

@@ -25,18 +25,88 @@
  *    Chia-I Wu <olv@lunarg.com>
  */
 
+#include "util/u_upload_mgr.h"
 #include "ilo_context.h"
+#include "ilo_render.h"
+#include "ilo_shader.h"
 #include "ilo_gpgpu.h"
 
-/*
- * This is a placeholder.  We will need something similar to ilo_render.
- */
+static void
+launch_grid(struct ilo_context *ilo,
+            const uint *block_layout, const uint *grid_layout,
+            const struct pipe_constant_buffer *input, uint32_t pc)
+{
+   const unsigned grid_offset[3] = { 0, 0, 0 };
+   const unsigned thread_group_size =
+      block_layout[0] * block_layout[1] * block_layout[2];
+   int max_len, before_space;
+
+   ilo_cp_set_owner(ilo->cp, INTEL_RING_RENDER, NULL);
+
+   max_len = ilo_render_get_launch_grid_len(ilo->render, &ilo->state_vector);
+   max_len += ilo_render_get_flush_len(ilo->render) * 2;
+
+   if (max_len > ilo_cp_space(ilo->cp)) {
+      ilo_cp_submit(ilo->cp, "out of space");
+      assert(max_len <= ilo_cp_space(ilo->cp));
+   }
+
+   before_space = ilo_cp_space(ilo->cp);
+
+   while (true) {
+      struct ilo_builder_snapshot snapshot;
+
+      ilo_builder_batch_snapshot(&ilo->cp->builder, &snapshot);
+
+      ilo_render_emit_launch_grid(ilo->render, &ilo->state_vector,
+            grid_offset, grid_layout, thread_group_size, input, pc);
+
+      if (!ilo_builder_validate(&ilo->cp->builder, 0, NULL)) {
+         ilo_builder_batch_restore(&ilo->cp->builder, &snapshot);
+
+         /* flush and try again */
+         if (ilo_builder_batch_used(&ilo->cp->builder)) {
+            ilo_cp_submit(ilo->cp, "out of aperture");
+            continue;
+         }
+      }
+
+      break;
+   }
+
+   /* sanity check size estimation */
+   assert(before_space - ilo_cp_space(ilo->cp) <= max_len);
+}
 
 static void
 ilo_launch_grid(struct pipe_context *pipe,
                 const uint *block_layout, const uint *grid_layout,
                 uint32_t pc, const void *input)
 {
+   struct ilo_context *ilo = ilo_context(pipe);
+   struct ilo_shader_state *cs = ilo->state_vector.cs;
+   struct pipe_constant_buffer input_buf;
+
+   memset(&input_buf, 0, sizeof(input_buf));
+
+   input_buf.buffer_size =
+      ilo_shader_get_kernel_param(cs, ILO_KERNEL_CS_INPUT_SIZE);
+   if (input_buf.buffer_size) {
+      u_upload_data(ilo->uploader, 0, input_buf.buffer_size, input,
+            &input_buf.buffer_offset, &input_buf.buffer);
+   }
+
+   ilo_shader_cache_upload(ilo->shader_cache, &ilo->cp->builder);
+
+   launch_grid(ilo, block_layout, grid_layout, &input_buf, pc);
+
+   ilo_render_invalidate_hw(ilo->render);
+
+   if (ilo_debug & ILO_DEBUG_NOCACHE)
+      ilo_render_emit_flush(ilo->render);
+
+   if (input_buf.buffer_size)
+      pipe_resource_reference(&input_buf.buffer, NULL);
 }
 
 /**