mesa: pass shader centroid/invariant info through to the TGSI shader

(cherry picked from commit c5b52b5e0e6f6e47c3953076fa788921b1c5a5e2)

3 files changed, 80 insertions, 37 deletions

diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 33574ddf40..b3a9f6594b 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -569,7 +569,8 @@ make_input_decl(
    GLuint usage_mask,
    GLboolean semantic_info,
    GLuint semantic_name,
-   GLbitfield semantic_index )
+   GLbitfield semantic_index,
+   GLbitfield input_flags)
 {
    struct tgsi_full_declaration decl;
 
@@ -588,6 +589,10 @@ make_input_decl(
    if (interpolate_info) {
       decl.Declaration.Interpolate = interpolate;
    }
+   if (input_flags & PROG_PARAM_BIT_CENTROID)
+      decl.Declaration.Centroid = 1;
+   if (input_flags & PROG_PARAM_BIT_INVARIANT)
+      decl.Declaration.Invariant = 1;
 
    return decl;
 }
@@ -600,7 +605,8 @@ make_output_decl(
    GLuint index,
    GLuint semantic_name,
    GLuint semantic_index,
-   GLbitfield usage_mask )
+   GLuint usage_mask,
+   GLbitfield output_flags)
 {
    struct tgsi_full_declaration decl;
 
@@ -614,6 +620,10 @@ make_output_decl(
    decl.DeclarationRange.Last = index;
    decl.Semantic.SemanticName = semantic_name;
    decl.Semantic.SemanticIndex = semantic_index;
+   if (output_flags & PROG_PARAM_BIT_CENTROID)
+      decl.Declaration.Centroid = 1;
+   if (output_flags & PROG_PARAM_BIT_INVARIANT)
+      decl.Declaration.Invariant = 1;
 
    return decl;
 }
@@ -727,10 +737,12 @@ st_translate_mesa_program(
    const ubyte inputSemanticName[],
    const ubyte inputSemanticIndex[],
    const GLuint interpMode[],
+   const GLbitfield inputFlags[],
    GLuint numOutputs,
    const GLuint outputMapping[],
    const ubyte outputSemanticName[],
    const ubyte outputSemanticIndex[],
+   const GLbitfield outputFlags[],
    struct tgsi_token *tokens,
    GLuint maxTokens )
 {
@@ -768,7 +780,8 @@ st_translate_mesa_program(
                                     GL_TRUE, interpMode[i],
                                     TGSI_WRITEMASK_XYZW,
                                     GL_TRUE, inputSemanticName[i],
-                                    inputSemanticIndex[i]);
+                                    inputSemanticIndex[i],
+                                    inputFlags[i]);
          ti += tgsi_build_full_declaration(&fulldecl,
                                            &tokens[ti],
                                            header,
@@ -785,7 +798,8 @@ st_translate_mesa_program(
          fulldecl = make_input_decl(i,
                                     GL_FALSE, 0,
                                     TGSI_WRITEMASK_XYZW,
-                                    GL_FALSE, 0, 0);
+                                    GL_FALSE, 0, 0,
+                                    inputFlags[i]);
          ti += tgsi_build_full_declaration(&fulldecl,
                                            &tokens[ti],
                                            header,
@@ -804,13 +818,15 @@ st_translate_mesa_program(
             fulldecl = make_output_decl(i,
                                         TGSI_SEMANTIC_POSITION, /* Z / Depth */
                                         outputSemanticIndex[i],
-                                        TGSI_WRITEMASK_Z );
+                                        TGSI_WRITEMASK_Z,
+                                        outputFlags[i]);
             break;
          case TGSI_SEMANTIC_COLOR:
             fulldecl = make_output_decl(i,
                                         TGSI_SEMANTIC_COLOR,
                                         outputSemanticIndex[i],
-                                        TGSI_WRITEMASK_XYZW );
+                                        TGSI_WRITEMASK_XYZW,
+                                        outputFlags[i]);
             break;
          default:
             assert(0);
@@ -829,7 +845,8 @@ st_translate_mesa_program(
          fulldecl = make_output_decl(i,
                                      outputSemanticName[i],
                                      outputSemanticIndex[i],
-                                     TGSI_WRITEMASK_XYZW );
+                                     TGSI_WRITEMASK_XYZW,
+                                     outputFlags[i]);
          ti += tgsi_build_full_declaration(&fulldecl,
                                            &tokens[ti],
                                            header,
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.h b/src/mesa/state_tracker/st_mesa_to_tgsi.h
index 77c74644b8..7b2bee1ab7 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.h
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.h
@@ -48,10 +48,12 @@ st_translate_mesa_program(
    const ubyte inputSemanticName[],
    const ubyte inputSemanticIndex[],
    const GLuint interpMode[],
+   const GLbitfield inputFlags[],
    GLuint numOutputs,
    const GLuint outputMapping[],
    const ubyte outputSemanticName[],
    const ubyte outputSemanticIndex[],
+   const GLbitfield outputFlags[],
    struct tgsi_token *tokens,
    GLuint maxTokens );
 
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index af0df22dc5..cf4b39cee4 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -99,7 +99,12 @@ st_translate_vertex_program(struct st_context *st,
    ubyte vs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
    uint vs_num_outputs = 0;
 
+   GLbitfield input_flags[MAX_PROGRAM_INPUTS];
+   GLbitfield output_flags[MAX_PROGRAM_OUTPUTS];
+
    memset(&vs, 0, sizeof(vs));
+   memset(input_flags, 0, sizeof(input_flags));
+   memset(output_flags, 0, sizeof(output_flags));
 
    if (stvp->Base.IsPositionInvariant)
       _mesa_insert_mvp_code(st->ctx, &stvp->Base);
@@ -171,6 +176,8 @@ st_translate_vertex_program(struct st_context *st,
          default:
             assert(0);
          }
+
+         input_flags[slot] = stvp->Base.Base.InputFlags[attr];
       }
    }
 
@@ -192,6 +199,7 @@ st_translate_vertex_program(struct st_context *st,
    for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) {
       vs_output_semantic_name[i] = TGSI_SEMANTIC_GENERIC;
       vs_output_semantic_index[i] = 0;
+      output_flags[i] = 0x0;
    }
 
    num_generic = 0;
@@ -276,6 +284,8 @@ st_translate_vertex_program(struct st_context *st,
                vs_output_semantic_index[slot] = num_generic++;
             }
          }
+
+         output_flags[slot] = stvp->Base.Base.OutputFlags[attr];
       }
    }
 
@@ -307,21 +317,23 @@ st_translate_vertex_program(struct st_context *st,
 
    /* XXX: fix static allocation of tokens:
     */
-   num_tokens = st_translate_mesa_program( TGSI_PROCESSOR_VERTEX,
-                                &stvp->Base.Base,
-                                /* inputs */
-                                vs_num_inputs,
-                                stvp->input_to_index,
-                                vs_input_semantic_name,
-                                vs_input_semantic_index,
-                                NULL,
-                                /* outputs */
-                                vs_num_outputs,
-                                outputMapping,
-                                vs_output_semantic_name,
-                                vs_output_semantic_index,
-                                /* tokenized result */
-                                tokens, ST_MAX_SHADER_TOKENS);
+   num_tokens = st_translate_mesa_program(TGSI_PROCESSOR_VERTEX,
+                                          &stvp->Base.Base,
+                                          /* inputs */
+                                          vs_num_inputs,
+                                          stvp->input_to_index,
+                                          vs_input_semantic_name,
+                                          vs_input_semantic_index,
+                                          NULL,
+                                          input_flags,
+                                          /* outputs */
+                                          vs_num_outputs,
+                                          outputMapping,
+                                          vs_output_semantic_name,
+                                          vs_output_semantic_index,
+                                          output_flags,
+                                          /* tokenized result */
+                                          tokens, ST_MAX_SHADER_TOKENS);
 
    assert(num_tokens < ST_MAX_SHADER_TOKENS);
 
@@ -371,7 +383,12 @@ st_translate_fragment_program(struct st_context *st,
    ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
    uint fs_num_outputs = 0;
 
+   GLbitfield input_flags[MAX_PROGRAM_INPUTS];
+   GLbitfield output_flags[MAX_PROGRAM_OUTPUTS];
+
    memset(&fs, 0, sizeof(fs));
+   memset(input_flags, 0, sizeof(input_flags));
+   memset(output_flags, 0, sizeof(output_flags));
 
    /* which vertex output goes to the first fragment input: */
    if (inputsRead & FRAG_BIT_WPOS)
@@ -435,6 +452,8 @@ st_translate_fragment_program(struct st_context *st,
             stfp->input_semantic_index[slot] = num_generic++;
             interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
          }
+
+         input_flags[slot] = stfp->Base.Base.InputFlags[attr];
       }
    }
 
@@ -471,6 +490,9 @@ st_translate_fragment_program(struct st_context *st,
             default:
                assert(0);
             }
+
+            output_flags[fs_num_outputs] = stfp->Base.Base.OutputFlags[attr];
+
             fs_num_outputs++;
          }
       }
@@ -481,21 +503,23 @@ st_translate_fragment_program(struct st_context *st,
 
    /* XXX: fix static allocation of tokens:
     */
-   num_tokens = st_translate_mesa_program( TGSI_PROCESSOR_FRAGMENT,
-                                &stfp->Base.Base,
-                                /* inputs */
-                                fs_num_inputs,
-                                inputMapping,
-                                stfp->input_semantic_name,
-                                stfp->input_semantic_index,
-                                interpMode,
-                                /* outputs */
-                                fs_num_outputs,
-                                outputMapping,
-                                fs_output_semantic_name,
-                                fs_output_semantic_index,
-                                /* tokenized result */
-                                tokens, ST_MAX_SHADER_TOKENS);
+   num_tokens = st_translate_mesa_program(TGSI_PROCESSOR_FRAGMENT,
+                                          &stfp->Base.Base,
+                                          /* inputs */
+                                          fs_num_inputs,
+                                          inputMapping,
+                                          stfp->input_semantic_name,
+                                          stfp->input_semantic_index,
+                                          interpMode,
+                                          input_flags,
+                                          /* outputs */
+                                          fs_num_outputs,
+                                          outputMapping,
+                                          fs_output_semantic_name,
+                                          fs_output_semantic_index,
+                                          output_flags,
+                                          /* tokenized result */
+                                          tokens, ST_MAX_SHADER_TOKENS);
 
    assert(num_tokens < ST_MAX_SHADER_TOKENS);