v3d: Add support for draw indirect for GLES3.1.

In trying to enable compute shaders, I found that a bunch of deqp-gles31's
compute stuff wanted to interact with indirect dispatch.  This was easy to
do on its own.

2 files changed, 31 insertions, 2 deletions

diff --git a/src/gallium/drivers/v3d/v3d_screen.c b/src/gallium/drivers/v3d/v3d_screen.c
index 6f6c11f1ef1..f6846080c1c 100644
--- a/src/gallium/drivers/v3d/v3d_screen.c
+++ b/src/gallium/drivers/v3d/v3d_screen.c
@@ -122,6 +122,7 @@ v3d_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
         case PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME:
         case PIPE_CAP_COMPUTE:
         case PIPE_CAP_DRAW_INDIRECT:
+        case PIPE_CAP_MULTI_DRAW_INDIRECT:
         case PIPE_CAP_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION:
         case PIPE_CAP_SIGNED_VERTEX_BUFFER_OFFSET:
         case PIPE_CAP_TGSI_CAN_READ_OUTPUTS:
diff --git a/src/gallium/drivers/v3d/v3dx_draw.c b/src/gallium/drivers/v3d/v3dx_draw.c
index d48970e1e2b..692f1fe3c04 100644
--- a/src/gallium/drivers/v3d/v3dx_draw.c
+++ b/src/gallium/drivers/v3d/v3dx_draw.c
@@ -450,6 +450,9 @@ v3d_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
         for (int s = 0; s < PIPE_SHADER_TYPES; s++)
                 v3d_predraw_check_stage_inputs(pctx, s);
 
+        if (info->indirect)
+                v3d_flush_jobs_writing_resource(v3d, info->indirect->buffer);
+
         struct v3d_job *job = v3d_get_job_for_fbo(v3d);
 
         /* If vertex texturing depends on the output of rendering, we need to
@@ -547,7 +550,23 @@ v3d_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
                 }
 #endif
 
-                if (info->instance_count > 1) {
+                if (info->indirect) {
+                        cl_emit(&job->bcl, INDIRECT_INDEXED_INSTANCED_PRIM_LIST, prim) {
+                                prim.index_type = ffs(info->index_size) - 1;
+#if V3D_VERSION < 40
+                                prim.address_of_indices_list =
+                                        cl_address(rsc->bo, offset);
+#endif /* V3D_VERSION < 40 */
+                                prim.mode = info->mode | prim_tf_enable;
+                                prim.enable_primitive_restarts = info->primitive_restart;
+
+                                prim.number_of_draw_indirect_indexed_records = info->indirect->draw_count;
+
+                                prim.stride_in_multiples_of_4_bytes = info->indirect->stride >> 2;
+                                prim.address = cl_address(v3d_resource(info->indirect->buffer)->bo,
+                                                          info->indirect->offset);
+                        }
+                } else if (info->instance_count > 1) {
                         cl_emit(&job->bcl, INDEXED_INSTANCED_PRIM_LIST, prim) {
                                 prim.index_type = ffs(info->index_size) - 1;
 #if V3D_VERSION >= 40
@@ -584,7 +603,16 @@ v3d_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
                 if (info->has_user_indices)
                         pipe_resource_reference(&prsc, NULL);
         } else {
-                if (info->instance_count > 1) {
+                if (info->indirect) {
+                        cl_emit(&job->bcl, INDIRECT_VERTEX_ARRAY_INSTANCED_PRIMS, prim) {
+                                prim.mode = info->mode | prim_tf_enable;
+                                prim.number_of_draw_indirect_array_records = info->indirect->draw_count;
+
+                                prim.stride_in_multiples_of_4_bytes = info->indirect->stride >> 2;
+                                prim.address = cl_address(v3d_resource(info->indirect->buffer)->bo,
+                                                          info->indirect->offset);
+                        }
+                } else if (info->instance_count > 1) {
                         cl_emit(&job->bcl, VERTEX_ARRAY_INSTANCED_PRIMS, prim) {
                                 prim.mode = info->mode | prim_tf_enable;
                                 prim.index_of_first_vertex = info->start;