Mesa (master): draw, st/mesa: generate TGSI for ffvp/ARB_vp if draw lacks LLVM

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Module: Mesa
Branch: master
Commit: 41118246c6069db3a4443fb6b1ab872b6af1b2b7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=41118246c6069db3a4443fb6b1ab872b6af1b2b7

Author: Marek Olšák <marek.olsak at amd.com>
Date:   Wed Dec  4 17:27:13 2019 -0500

draw, st/mesa: generate TGSI for ffvp/ARB_vp if draw lacks LLVM

Reviewed-by: Roland Scheidegger <sroland at vmware.com>

---

 src/gallium/auxiliary/draw/draw_context.c | 9 +++++++++
 src/gallium/auxiliary/draw/draw_context.h | 2 ++
 src/mesa/state_tracker/st_program.c       | 9 +++++++--
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index 5e2e2580fb6..fb0b22eae43 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -63,6 +63,15 @@ draw_get_option_use_llvm(void)
 }
 #endif
 
+bool
+draw_has_llvm(void)
+{
+#ifdef LLVM_AVAILABLE
+   return draw_get_option_use_llvm();
+#else
+   return false;
+#endif
+}
 
 /**
  * Create new draw module context with gallivm state for LLVM JIT.
diff --git a/src/gallium/auxiliary/draw/draw_context.h b/src/gallium/auxiliary/draw/draw_context.h
index 0170f13e735..c58c12cc497 100644
--- a/src/gallium/auxiliary/draw/draw_context.h
+++ b/src/gallium/auxiliary/draw/draw_context.h
@@ -63,6 +63,8 @@ struct draw_so_target {
    int internal_offset;
 };
 
+bool draw_has_llvm(void);
+
 struct draw_context *draw_create( struct pipe_context *pipe );
 
 #ifdef LLVM_AVAILABLE
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index 1beba6317b6..84fd8e320af 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -462,7 +462,11 @@ st_translate_vertex_program(struct st_context *st,
          stp->state.type = PIPE_SHADER_IR_NIR;
          stp->Base.nir = st_translate_prog_to_nir(st, &stp->Base,
                                                   MESA_SHADER_VERTEX);
-         return true;
+         /* For st_draw_feedback, we need to generate TGSI too if draw doesn't
+          * use LLVM.
+          */
+         if (draw_has_llvm())
+            return true;
       }
    }
 
@@ -578,7 +582,8 @@ st_create_vp_variant(struct st_context *st,
 
    state.stream_output = stvp->state.stream_output;
 
-   if (stvp->state.type == PIPE_SHADER_IR_NIR) {
+   if (stvp->state.type == PIPE_SHADER_IR_NIR &&
+       (!key->is_draw_shader || draw_has_llvm())) {
       bool finalize = false;
 
       state.type = PIPE_SHADER_IR_NIR;