tgsi: add some more helper functions

This patch adds some more helper functions such as
   . tgsi_transform_temps_decl
   . tgsi_transform_output_decl
   . tgsi_transform_dst_reg
   . tgsi_transform_src_reg

Reviewed-by: Brian Paul <brianp@vmware.com>

diff --git a/src/gallium/auxiliary/tgsi/tgsi_transform.h b/src/gallium/auxiliary/tgsi/tgsi_transform.h
index 9b68f6a..3bd512b 100644 (file)
--- a/src/gallium/auxiliary/tgsi/tgsi_transform.h
+++ b/src/gallium/auxiliary/tgsi/tgsi_transform.h
@@ -95,20 +95,39 @@ struct tgsi_transform_context
  * Helper for emitting temporary register declarations.
  */
 static inline void
-tgsi_transform_temp_decl(struct tgsi_transform_context *ctx,
-                         unsigned index)
+tgsi_transform_temps_decl(struct tgsi_transform_context *ctx,
+                          unsigned firstIdx, unsigned lastIdx)
 {
    struct tgsi_full_declaration decl;
 
    decl = tgsi_default_full_declaration();
    decl.Declaration.File = TGSI_FILE_TEMPORARY;
-   decl.Range.First =
-   decl.Range.Last = index;
+   decl.Range.First = firstIdx;
+   decl.Range.Last = lastIdx;
    ctx->emit_declaration(ctx, &decl);
 }
 
+static inline void
+tgsi_transform_temp_decl(struct tgsi_transform_context *ctx,
+                         unsigned index)
+{
+   tgsi_transform_temps_decl(ctx, index, index);
+}
 
 static inline void
+tgsi_transform_const_decl(struct tgsi_transform_context *ctx,
+                          unsigned firstIdx, unsigned lastIdx)
+{
+   struct tgsi_full_declaration decl;
+
+   decl = tgsi_default_full_declaration();
+   decl.Declaration.File = TGSI_FILE_CONSTANT;
+   decl.Range.First = firstIdx;
+   decl.Range.Last = lastIdx;
+   ctx->emit_declaration(ctx, &decl);
+}
+ 
+static inline void
 tgsi_transform_input_decl(struct tgsi_transform_context *ctx,
                           unsigned index,
                           unsigned sem_name, unsigned sem_index,
@@ -129,6 +148,26 @@ tgsi_transform_input_decl(struct tgsi_transform_context *ctx,
    ctx->emit_declaration(ctx, &decl);
 }
 
+static inline void
+tgsi_transform_output_decl(struct tgsi_transform_context *ctx,
+                          unsigned index,
+                          unsigned sem_name, unsigned sem_index,
+                          unsigned interp)
+{
+   struct tgsi_full_declaration decl;
+
+   decl = tgsi_default_full_declaration();
+   decl.Declaration.File = TGSI_FILE_OUTPUT;
+   decl.Declaration.Interpolate = 1;
+   decl.Declaration.Semantic = 1;
+   decl.Semantic.Name = sem_name;
+   decl.Semantic.Index = sem_index;
+   decl.Range.First =
+   decl.Range.Last = index;
+   decl.Interp.Interpolate = interp;
+
+   ctx->emit_declaration(ctx, &decl);
+}
 
 static inline void
 tgsi_transform_sampler_decl(struct tgsi_transform_context *ctx,
@@ -182,6 +221,28 @@ tgsi_transform_immediate_decl(struct tgsi_transform_context *ctx,
    ctx->emit_immediate(ctx, &immed);
 }
 
+static inline void
+tgsi_transform_dst_reg(struct tgsi_full_dst_register *reg,
+                       unsigned file, unsigned index, unsigned writemask)
+{
+   reg->Register.File = file;
+   reg->Register.Index = index;
+   reg->Register.WriteMask = writemask;
+}
+
+static inline void
+tgsi_transform_src_reg(struct tgsi_full_src_register *reg,
+                       unsigned file, unsigned index, 
+                       unsigned swizzleX, unsigned swizzleY,
+                       unsigned swizzleZ, unsigned swizzleW)
+{
+   reg->Register.File = file;
+   reg->Register.Index = index;
+   reg->Register.SwizzleX = swizzleX; 
+   reg->Register.SwizzleY = swizzleY; 
+   reg->Register.SwizzleZ = swizzleZ; 
+   reg->Register.SwizzleW = swizzleW; 
+}
 
 /**
  * Helper for emitting 1-operand instructions.