tgsi/ureg: Allow for multiple extended instruction tokens.

For example, we would like to have a predicate and texture token
in one instruction to do predicated texture sampling.

2 files changed, 94 insertions, 75 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.c b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
index 67af953e09..4731e3bde8 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.c
@@ -644,7 +644,7 @@ static void validate( unsigned opcode,
 #endif
 }
 
-unsigned
+struct ureg_emit_insn_result
 ureg_emit_insn(struct ureg_program *ureg,
                unsigned opcode,
                boolean saturate,
@@ -659,6 +659,7 @@ ureg_emit_insn(struct ureg_program *ureg,
 {
    union tgsi_any_token *out;
    uint count = predicate ? 2 : 1;
+   struct ureg_emit_insn_result result;
 
    validate( opcode, num_dst, num_src );
    
@@ -672,6 +673,8 @@ ureg_emit_insn(struct ureg_program *ureg,
    out[0].insn.NumSrcRegs = num_src;
    out[0].insn.Padding = 0;
 
+   result.insn_token = ureg->domain[DOMAIN_INSN].count - count;
+
    if (predicate) {
       out[0].insn.Extended = 1;
       out[1].insn_ext_predicate = tgsi_default_instruction_ext_predicate();
@@ -680,19 +683,23 @@ ureg_emit_insn(struct ureg_program *ureg,
       out[1].insn_ext_predicate.SwizzleY = pred_swizzle_y;
       out[1].insn_ext_predicate.SwizzleZ = pred_swizzle_z;
       out[1].insn_ext_predicate.SwizzleW = pred_swizzle_w;
+
+      result.extended_token = result.insn_token + 1;
    } else {
       out[0].insn.Extended = 0;
+
+      result.extended_token = result.insn_token;
    }
 
    ureg->nr_instructions++;
    
-   return ureg->domain[DOMAIN_INSN].count - count;
+   return result;
 }
 
 
 void
 ureg_emit_label(struct ureg_program *ureg,
-                unsigned insn_token,
+                unsigned extended_token,
                 unsigned *label_token )
 {
    union tgsi_any_token *out, *insn;
@@ -701,9 +708,9 @@ ureg_emit_label(struct ureg_program *ureg,
       return;
 
    out = get_tokens( ureg, DOMAIN_INSN, 1 );
-   insn = retrieve_token( ureg, DOMAIN_INSN, insn_token );
+   insn = retrieve_token( ureg, DOMAIN_INSN, extended_token );
 
-   insn->insn.Extended = 1;
+   insn->token.Extended = 1;
 
    out[0].value = 0;
    out[0].insn_ext_label.Type = TGSI_INSTRUCTION_EXT_TYPE_LABEL;
@@ -737,15 +744,15 @@ ureg_fixup_label(struct ureg_program *ureg,
 
 void
 ureg_emit_texture(struct ureg_program *ureg,
-                  unsigned insn_token,
+                  unsigned extended_token,
                   unsigned target )
 {
    union tgsi_any_token *out, *insn;
 
    out = get_tokens( ureg, DOMAIN_INSN, 1 );
-   insn = retrieve_token( ureg, DOMAIN_INSN, insn_token );
+   insn = retrieve_token( ureg, DOMAIN_INSN, extended_token );
 
-   insn->insn.Extended = 1;
+   insn->token.Extended = 1;
 
    out[0].value = 0;
    out[0].insn_ext_texture.Type = TGSI_INSTRUCTION_EXT_TYPE_TEXTURE;
@@ -772,7 +779,8 @@ ureg_insn(struct ureg_program *ureg,
           const struct ureg_src *src,
           unsigned nr_src )
 {
-   unsigned insn, i;
+   struct ureg_emit_insn_result insn;
+   unsigned i;
    boolean saturate;
    boolean predicate;
    boolean negate;
@@ -806,7 +814,7 @@ ureg_insn(struct ureg_program *ureg,
    for (i = 0; i < nr_src; i++)
       ureg_emit_src( ureg, src[i] );
 
-   ureg_fixup_insn_size( ureg, insn );
+   ureg_fixup_insn_size( ureg, insn.insn_token );
 }
 
 void
@@ -818,7 +826,8 @@ ureg_tex_insn(struct ureg_program *ureg,
               const struct ureg_src *src,
               unsigned nr_src )
 {
-   unsigned insn, i;
+   struct ureg_emit_insn_result insn;
+   unsigned i;
    boolean saturate;
    boolean predicate;
    boolean negate;
@@ -846,7 +855,7 @@ ureg_tex_insn(struct ureg_program *ureg,
                          nr_dst,
                          nr_src);
 
-   ureg_emit_texture( ureg, insn, target );
+   ureg_emit_texture( ureg, insn.extended_token, target );
 
    for (i = 0; i < nr_dst; i++)
       ureg_emit_dst( ureg, dst[i] );
@@ -854,7 +863,7 @@ ureg_tex_insn(struct ureg_program *ureg,
    for (i = 0; i < nr_src; i++)
       ureg_emit_src( ureg, src[i] );
 
-   ureg_fixup_insn_size( ureg, insn );
+   ureg_fixup_insn_size( ureg, insn.insn_token );
 }
 
 
@@ -865,7 +874,8 @@ ureg_label_insn(struct ureg_program *ureg,
                 unsigned nr_src,
                 unsigned *label_token )
 {
-   unsigned insn, i;
+   struct ureg_emit_insn_result insn;
+   unsigned i;
 
    insn = ureg_emit_insn(ureg,
                          opcode,
@@ -879,12 +889,12 @@ ureg_label_insn(struct ureg_program *ureg,
                          0,
                          nr_src);
 
-   ureg_emit_label( ureg, insn, label_token );
+   ureg_emit_label( ureg, insn.extended_token, label_token );
 
    for (i = 0; i < nr_src; i++)
       ureg_emit_src( ureg, src[i] );
 
-   ureg_fixup_insn_size( ureg, insn );
+   ureg_fixup_insn_size( ureg, insn.insn_token );
 }
 
 
diff --git a/src/gallium/auxiliary/tgsi/tgsi_ureg.h b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
index a3bc99140c..dae4291194 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_ureg.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_ureg.h
@@ -273,7 +273,12 @@ ureg_label_insn(struct ureg_program *ureg,
  * Internal instruction helpers, don't call these directly:
  */
 
-unsigned
+struct ureg_emit_insn_result {
+   unsigned insn_token;       /*< Used to fixup insn size. */
+   unsigned extended_token;   /*< Used to set the Extended bit, usually the same as insn_token. */
+};
+
+struct ureg_emit_insn_result
 ureg_emit_insn(struct ureg_program *ureg,
                unsigned opcode,
                boolean saturate,
@@ -323,7 +328,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg )       \
                                   TGSI_SWIZZLE_Z,               \
                                   TGSI_SWIZZLE_W,               \
                                   0,                            \
-                                  0);                           \
+                                  0).insn_token;                \
    ureg_fixup_insn_size( ureg, insn );                          \
 }
 
@@ -342,7 +347,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg,        \
                                   TGSI_SWIZZLE_Z,               \
                                   TGSI_SWIZZLE_W,               \
                                   0,                            \
-                                  1);                           \
+                                  1).insn_token;                \
    ureg_emit_src( ureg, src );                                  \
    ureg_fixup_insn_size( ureg, insn );                          \
 }
@@ -352,19 +357,20 @@ static INLINE void ureg_##op( struct ureg_program *ureg,        \
                               unsigned *label_token )           \
 {                                                               \
    unsigned opcode = TGSI_OPCODE_##op;                          \
-   unsigned insn = ureg_emit_insn(ureg,                         \
-                                  opcode,                       \
-                                  FALSE,                        \
-                                  FALSE,                        \
-                                  FALSE,                        \
-                                  TGSI_SWIZZLE_X,               \
-                                  TGSI_SWIZZLE_Y,               \
-                                  TGSI_SWIZZLE_Z,               \
-                                  TGSI_SWIZZLE_W,               \
-                                  0,                            \
-                                  0);                           \
-   ureg_emit_label( ureg, insn, label_token );                  \
-   ureg_fixup_insn_size( ureg, insn );                          \
+   struct ureg_emit_insn_result insn;                           \
+   insn = ureg_emit_insn(ureg,                                  \
+                         opcode,                                \
+                         FALSE,                                 \
+                         FALSE,                                 \
+                         FALSE,                                 \
+                         TGSI_SWIZZLE_X,                        \
+                         TGSI_SWIZZLE_Y,                        \
+                         TGSI_SWIZZLE_Z,                        \
+                         TGSI_SWIZZLE_W,                        \
+                         0,                                     \
+                         0);                                    \
+   ureg_emit_label( ureg, insn.extended_token, label_token );   \
+   ureg_fixup_insn_size( ureg, insn.insn_token );               \
 }
 
 #define OP01_LBL( op )                                          \
@@ -373,20 +379,21 @@ static INLINE void ureg_##op( struct ureg_program *ureg,        \
                               unsigned *label_token )          \
 {                                                               \
    unsigned opcode = TGSI_OPCODE_##op;                          \
-   unsigned insn = ureg_emit_insn(ureg,                         \
-                                  opcode,                       \
-                                  FALSE,                        \
-                                  FALSE,                        \
-                                  FALSE,                        \
-                                  TGSI_SWIZZLE_X,               \
-                                  TGSI_SWIZZLE_Y,               \
-                                  TGSI_SWIZZLE_Z,               \
-                                  TGSI_SWIZZLE_W,               \
-                                  0,                            \
-                                  1);                           \
-   ureg_emit_label( ureg, insn, label_token );                  \
+   struct ureg_emit_insn_result insn;                           \
+   insn = ureg_emit_insn(ureg,                                  \
+                         opcode,                                \
+                         FALSE,                                 \
+                         FALSE,                                 \
+                         FALSE,                                 \
+                         TGSI_SWIZZLE_X,                        \
+                         TGSI_SWIZZLE_Y,                        \
+                         TGSI_SWIZZLE_Z,                        \
+                         TGSI_SWIZZLE_W,                        \
+                         0,                                     \
+                         1);                                    \
+   ureg_emit_label( ureg, insn.extended_token, label_token );   \
    ureg_emit_src( ureg, src );                                  \
-   ureg_fixup_insn_size( ureg, insn );                          \
+   ureg_fixup_insn_size( ureg, insn.insn_token );               \
 }
 
 #define OP10( op )                                                      \
@@ -404,7 +411,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                                   dst.PredSwizzleZ,                     \
                                   dst.PredSwizzleW,                     \
                                   1,                                    \
-                                  0);                                   \
+                                  0).insn_token;                        \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_fixup_insn_size( ureg, insn );                                  \
 }
@@ -426,7 +433,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                                   dst.PredSwizzleZ,                     \
                                   dst.PredSwizzleW,                     \
                                   1,                                    \
-                                  1);                                   \
+                                  1).insn_token;                        \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_emit_src( ureg, src );                                          \
    ureg_fixup_insn_size( ureg, insn );                                  \
@@ -449,7 +456,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                                   dst.PredSwizzleZ,                     \
                                   dst.PredSwizzleW,                     \
                                   1,                                    \
-                                  2);                                   \
+                                  2).insn_token;                        \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_emit_src( ureg, src0 );                                         \
    ureg_emit_src( ureg, src1 );                                         \
@@ -464,22 +471,23 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                               struct ureg_src src1 )                    \
 {                                                                       \
    unsigned opcode = TGSI_OPCODE_##op;                                  \
-   unsigned insn = ureg_emit_insn(ureg,                                 \
-                                  opcode,                               \
-                                  dst.Saturate,                         \
-                                  dst.Predicate,                        \
-                                  dst.PredNegate,                       \
-                                  dst.PredSwizzleX,                     \
-                                  dst.PredSwizzleY,                     \
-                                  dst.PredSwizzleZ,                     \
-                                  dst.PredSwizzleW,                     \
-                                  1,                                    \
-                                  2);                                   \
-   ureg_emit_texture( ureg, insn, target );                             \
+   struct ureg_emit_insn_result insn;                                   \
+   insn = ureg_emit_insn(ureg,                                          \
+                         opcode,                                        \
+                         dst.Saturate,                                  \
+                         dst.Predicate,                                 \
+                         dst.PredNegate,                                \
+                         dst.PredSwizzleX,                              \
+                         dst.PredSwizzleY,                              \
+                         dst.PredSwizzleZ,                              \
+                         dst.PredSwizzleW,                              \
+                         1,                                             \
+                         2);                                            \
+   ureg_emit_texture( ureg, insn.extended_token, target );              \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_emit_src( ureg, src0 );                                         \
    ureg_emit_src( ureg, src1 );                                         \
-   ureg_fixup_insn_size( ureg, insn );                                  \
+   ureg_fixup_insn_size( ureg, insn.insn_token );                       \
 }
 
 #define OP13( op )                                                      \
@@ -500,7 +508,7 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                                   dst.PredSwizzleZ,                     \
                                   dst.PredSwizzleW,                     \
                                   1,                                    \
-                                  3);                                   \
+                                  3).insn_token;                        \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_emit_src( ureg, src0 );                                         \
    ureg_emit_src( ureg, src1 );                                         \
@@ -518,24 +526,25 @@ static INLINE void ureg_##op( struct ureg_program *ureg,                \
                               struct ureg_src src3 )                    \
 {                                                                       \
    unsigned opcode = TGSI_OPCODE_##op;                                  \
-   unsigned insn = ureg_emit_insn(ureg,                                 \
-                                  opcode,                               \
-                                  dst.Saturate,                         \
-                                  dst.Predicate,                        \
-                                  dst.PredNegate,                       \
-                                  dst.PredSwizzleX,                     \
-                                  dst.PredSwizzleY,                     \
-                                  dst.PredSwizzleZ,                     \
-                                  dst.PredSwizzleW,                     \
-                                  1,                                    \
-                                  4);                                   \
-   ureg_emit_texture( ureg, insn, target );                             \
+   struct ureg_emit_insn_result insn;                                   \
+   insn = ureg_emit_insn(ureg,                                          \
+                         opcode,                                        \
+                         dst.Saturate,                                  \
+                         dst.Predicate,                                 \
+                         dst.PredNegate,                                \
+                         dst.PredSwizzleX,                              \
+                         dst.PredSwizzleY,                              \
+                         dst.PredSwizzleZ,                              \
+                         dst.PredSwizzleW,                              \
+                         1,                                             \
+                         4);                                            \
+   ureg_emit_texture( ureg, insn.extended_token, target );              \
    ureg_emit_dst( ureg, dst );                                          \
    ureg_emit_src( ureg, src0 );                                         \
    ureg_emit_src( ureg, src1 );                                         \
    ureg_emit_src( ureg, src2 );                                         \
    ureg_emit_src( ureg, src3 );                                         \
-   ureg_fixup_insn_size( ureg, insn );                                  \
+   ureg_fixup_insn_size( ureg, insn.insn_token );                       \
 }