Mesa (master): ddebug: handle some cases of non-TGSI shaders

[Nicolai Hähnle]

Module: Mesa
Branch: master
Commit: d91f97f91db4a826f7d5909a2a63a028a81188bb
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d91f97f91db4a826f7d5909a2a63a028a81188bb

Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date:   Fri Jun  9 15:12:23 2017 +0200

ddebug: handle some cases of non-TGSI shaders

NIR shaders are not captured properly in pipelined mode currently. This
would require shader cloning, which requires linking all the Gallium
drivers against NIR. We can always do that later.

v2: avoid immediate crashes in pipelined mode

Reviewed-by: Marek Olšák <marek.olsak at amd.com> (v1)

---

 src/gallium/drivers/ddebug/dd_context.c |  6 ++++--
 src/gallium/drivers/ddebug/dd_draw.c    | 17 +++++++++++++----
 src/gallium/drivers/ddebug/dd_screen.c  | 11 +++++++++++
 3 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/ddebug/dd_context.c b/src/gallium/drivers/ddebug/dd_context.c
index 1ace9e52eb..6b1ddc9d46 100644
--- a/src/gallium/drivers/ddebug/dd_context.c
+++ b/src/gallium/drivers/ddebug/dd_context.c
@@ -314,7 +314,8 @@ DD_CSO_DELETE(vertex_elements)
       struct dd_state *hstate = state; \
    \
       pipe->delete_##name##_state(pipe, hstate->cso); \
-      tgsi_free_tokens(hstate->state.shader.tokens); \
+      if (hstate->state.shader.type == PIPE_SHADER_IR_TGSI) \
+         tgsi_free_tokens(hstate->state.shader.tokens); \
       FREE(hstate); \
    }
 
@@ -330,7 +331,8 @@ DD_CSO_DELETE(vertex_elements)
          return NULL; \
       hstate->cso = pipe->create_##name##_state(pipe, state); \
       hstate->state.shader = *state; \
-      hstate->state.shader.tokens = tgsi_dup_tokens(state->tokens); \
+      if (hstate->state.shader.type == PIPE_SHADER_IR_TGSI) \
+         hstate->state.shader.tokens = tgsi_dup_tokens(state->tokens); \
       return hstate; \
    } \
     \
diff --git a/src/gallium/drivers/ddebug/dd_draw.c b/src/gallium/drivers/ddebug/dd_draw.c
index 7edf6aff84..9c95d250d1 100644
--- a/src/gallium/drivers/ddebug/dd_draw.c
+++ b/src/gallium/drivers/ddebug/dd_draw.c
@@ -98,8 +98,13 @@ dd_num_active_viewports(struct dd_draw_state *dstate)
    else
       return 1;
 
-   tgsi_scan_shader(tokens, &info);
-   return info.writes_viewport_index ? PIPE_MAX_VIEWPORTS : 1;
+   if (tokens) {
+      tgsi_scan_shader(tokens, &info);
+      if (info.writes_viewport_index)
+         return PIPE_MAX_VIEWPORTS;
+   }
+
+   return 1;
 }
 
 #define COLOR_RESET	"\033[0m"
@@ -831,8 +836,12 @@ dd_copy_draw_state(struct dd_draw_state *dst, struct dd_draw_state *src)
 
       if (src->shaders[i]) {
          dst->shaders[i]->state.shader = src->shaders[i]->state.shader;
-         dst->shaders[i]->state.shader.tokens =
-            tgsi_dup_tokens(src->shaders[i]->state.shader.tokens);
+         if (src->shaders[i]->state.shader.tokens) {
+            dst->shaders[i]->state.shader.tokens =
+               tgsi_dup_tokens(src->shaders[i]->state.shader.tokens);
+         } else {
+            dst->shaders[i]->state.shader.ir.nir = NULL;
+         }
       } else {
          dst->shaders[i] = NULL;
       }
diff --git a/src/gallium/drivers/ddebug/dd_screen.c b/src/gallium/drivers/ddebug/dd_screen.c
index 9642532bc0..a5d2be1402 100644
--- a/src/gallium/drivers/ddebug/dd_screen.c
+++ b/src/gallium/drivers/ddebug/dd_screen.c
@@ -55,6 +55,16 @@ dd_screen_get_device_vendor(struct pipe_screen *_screen)
    return screen->get_device_vendor(screen);
 }
 
+static const void *
+dd_screen_get_compiler_options(struct pipe_screen *_screen,
+                               enum pipe_shader_ir ir,
+                               enum pipe_shader_type shader)
+{
+   struct pipe_screen *screen = dd_screen(_screen)->screen;
+
+   return screen->get_compiler_options(screen, ir, shader);
+}
+
 static struct disk_cache *
 dd_screen_get_disk_shader_cache(struct pipe_screen *_screen)
 {
@@ -411,6 +421,7 @@ ddebug_screen_create(struct pipe_screen *screen)
    SCR_INIT(fence_finish);
    SCR_INIT(get_driver_query_info);
    SCR_INIT(get_driver_query_group_info);
+   SCR_INIT(get_compiler_options);
 
 #undef SCR_INIT