tgsi/ureg: add layout/component input declarations

v2: change the order of parameters (Dave)

Reviewed-by: Edward O'Callaghan <[email protected]> (v1)
Reviewed-by: Dave Airlie <[email protected]> (v1)

1 files changed, 55 insertions, 12 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index 6ad514d959a..348c3719fe2 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -77,9 +77,9 @@ struct ureg_tokens {
    unsigned count;
 };
 
-#define UREG_MAX_INPUT PIPE_MAX_SHADER_INPUTS
+#define UREG_MAX_INPUT (4 * PIPE_MAX_SHADER_INPUTS)
 #define UREG_MAX_SYSTEM_VALUE PIPE_MAX_ATTRIBS
-#define UREG_MAX_OUTPUT PIPE_MAX_SHADER_OUTPUTS
+#define UREG_MAX_OUTPUT (4 * PIPE_MAX_SHADER_OUTPUTS)
 #define UREG_MAX_CONSTANT_RANGE 32
 #define UREG_MAX_IMMEDIATE 4096
 #define UREG_MAX_ADDR 3
@@ -108,6 +108,7 @@ struct ureg_program
       unsigned semantic_index;
       unsigned interp;
       unsigned char cylindrical_wrap;
+      unsigned char usage_mask;
       unsigned interp_location;
       unsigned first;
       unsigned last;
@@ -269,25 +270,33 @@ ureg_property(struct ureg_program *ureg, unsigned name, unsigned value)
 }
 
 struct ureg_src
-ureg_DECL_fs_input_cyl_centroid(struct ureg_program *ureg,
+ureg_DECL_fs_input_cyl_centroid_layout(struct ureg_program *ureg,
                        unsigned semantic_name,
                        unsigned semantic_index,
                        unsigned interp_mode,
                        unsigned cylindrical_wrap,
                        unsigned interp_location,
+                       unsigned index,
+                       unsigned usage_mask,
                        unsigned array_id,
                        unsigned array_size)
 {
    unsigned i;
 
+   assert(usage_mask != 0);
+   assert(usage_mask <= TGSI_WRITEMASK_XYZW);
+
    for (i = 0; i < ureg->nr_inputs; i++) {
       if (ureg->input[i].semantic_name == semantic_name &&
           ureg->input[i].semantic_index == semantic_index) {
          assert(ureg->input[i].interp == interp_mode);
          assert(ureg->input[i].cylindrical_wrap == cylindrical_wrap);
          assert(ureg->input[i].interp_location == interp_location);
-         assert(ureg->input[i].array_id == array_id);
-         goto out;
+         if (ureg->input[i].array_id == array_id) {
+            ureg->input[i].usage_mask |= usage_mask;
+            goto out;
+         }
+         assert((ureg->input[i].usage_mask & usage_mask) == 0);
       }
    }
 
@@ -298,10 +307,11 @@ ureg_DECL_fs_input_cyl_centroid(struct ureg_program *ureg,
       ureg->input[i].interp = interp_mode;
       ureg->input[i].cylindrical_wrap = cylindrical_wrap;
       ureg->input[i].interp_location = interp_location;
-      ureg->input[i].first = ureg->nr_input_regs;
-      ureg->input[i].last = ureg->nr_input_regs + array_size - 1;
+      ureg->input[i].first = index;
+      ureg->input[i].last = index + array_size - 1;
       ureg->input[i].array_id = array_id;
-      ureg->nr_input_regs += array_size;
+      ureg->input[i].usage_mask = usage_mask;
+      ureg->nr_input_regs = MAX2(ureg->nr_input_regs, index + array_size);
       ureg->nr_inputs++;
    } else {
       set_bad(ureg);
@@ -312,6 +322,21 @@ out:
                                   array_id);
 }
 
+struct ureg_src
+ureg_DECL_fs_input_cyl_centroid(struct ureg_program *ureg,
+                       unsigned semantic_name,
+                       unsigned semantic_index,
+                       unsigned interp_mode,
+                       unsigned cylindrical_wrap,
+                       unsigned interp_location,
+                       unsigned array_id,
+                       unsigned array_size)
+{
+   return ureg_DECL_fs_input_cyl_centroid_layout(ureg,
+         semantic_name, semantic_index, interp_mode, cylindrical_wrap, interp_location,
+         ureg->nr_input_regs, TGSI_WRITEMASK_XYZW, array_id, array_size);
+}
+
 
 struct ureg_src 
 ureg_DECL_vs_input( struct ureg_program *ureg,
@@ -326,6 +351,21 @@ ureg_DECL_vs_input( struct ureg_program *ureg,
 
 
 struct ureg_src
+ureg_DECL_input_layout(struct ureg_program *ureg,
+                unsigned semantic_name,
+                unsigned semantic_index,
+                unsigned index,
+                unsigned usage_mask,
+                unsigned array_id,
+                unsigned array_size)
+{
+   return ureg_DECL_fs_input_cyl_centroid_layout(ureg,
+               semantic_name, semantic_index, 0, 0, 0,
+               index, usage_mask, array_id, array_size);
+}
+
+
+struct ureg_src
 ureg_DECL_input(struct ureg_program *ureg,
                 unsigned semantic_name,
                 unsigned semantic_index,
@@ -1536,7 +1576,8 @@ emit_decl_fs(struct ureg_program *ureg,
              unsigned interpolate,
              unsigned cylindrical_wrap,
              unsigned interpolate_location,
-             unsigned array_id)
+             unsigned array_id,
+             unsigned usage_mask)
 {
    union tgsi_any_token *out = get_tokens(ureg, DOMAIN_DECL,
                                           array_id ? 5 : 4);
@@ -1545,7 +1586,7 @@ emit_decl_fs(struct ureg_program *ureg,
    out[0].decl.Type = TGSI_TOKEN_TYPE_DECLARATION;
    out[0].decl.NrTokens = 4;
    out[0].decl.File = file;
-   out[0].decl.UsageMask = TGSI_WRITEMASK_XYZW; /* FIXME! */
+   out[0].decl.UsageMask = usage_mask;
    out[0].decl.Interpolate = 1;
    out[0].decl.Semantic = 1;
    out[0].decl.Array = array_id != 0;
@@ -1792,7 +1833,8 @@ static void emit_decls( struct ureg_program *ureg )
                          ureg->input[i].interp,
                          ureg->input[i].cylindrical_wrap,
                          ureg->input[i].interp_location,
-                         ureg->input[i].array_id);
+                         ureg->input[i].array_id,
+                         ureg->input[i].usage_mask);
          }
       }
       else {
@@ -1806,7 +1848,8 @@ static void emit_decls( struct ureg_program *ureg )
                             (j - ureg->input[i].first),
                             ureg->input[i].interp,
                             ureg->input[i].cylindrical_wrap,
-                            ureg->input[i].interp_location, 0);
+                            ureg->input[i].interp_location, 0,
+                            ureg->input[i].usage_mask);
             }
          }
       }