ir_to_mesa: Add a constructor for ir_to_mesa_src_reg.

This helps makes sure we don't miss any new fields, and makes totally
uninitialized src_regs be PROGRAM_UNDEFINED.

1 files changed, 34 insertions, 48 deletions

diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 8f790af09ac..5510440475d 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -53,11 +53,30 @@ extern "C" {
 #include "program/prog_parameter.h"
 }
 
+static int swizzle_for_size(int size);
+
 /**
  * This struct is a corresponding struct to Mesa prog_src_register, with
  * wider fields.
  */
 typedef struct ir_to_mesa_src_reg {
+   ir_to_mesa_src_reg(int file, int index, const glsl_type *type)
+   {
+      this->file = file;
+      this->index = index;
+      if (type && (type->is_scalar() || type->is_vector() || type->is_matrix()))
+	 this->swizzle = swizzle_for_size(type->vector_elements);
+      else
+	 this->swizzle = SWIZZLE_XYZW;
+      this->negate = 0;
+      this->reladdr = NULL;
+   }
+
+   ir_to_mesa_src_reg()
+   {
+      this->file = PROGRAM_UNDEFINED;
+   }
+
    int file; /**< PROGRAM_* from Mesa */
    int index; /**< temporary index, VERT_ATTRIB_*, FRAG_ATTRIB_*, etc. */
    GLuint swizzle; /**< SWIZZLE_XYZWONEZERO swizzles from Mesa. */
@@ -242,9 +261,7 @@ public:
    void *mem_ctx;
 };
 
-ir_to_mesa_src_reg ir_to_mesa_undef = {
-   PROGRAM_UNDEFINED, 0, SWIZZLE_NOOP, NEGATE_NONE, NULL,
-};
+ir_to_mesa_src_reg ir_to_mesa_undef = ir_to_mesa_src_reg(PROGRAM_UNDEFINED, 0, NULL);
 
 ir_to_mesa_dst_reg ir_to_mesa_undef_dst = {
    PROGRAM_UNDEFINED, 0, SWIZZLE_NOOP, COND_TR, NULL,
@@ -379,15 +396,7 @@ ir_to_mesa_dst_reg_from_src(ir_to_mesa_src_reg reg)
 inline ir_to_mesa_src_reg
 ir_to_mesa_src_reg_from_dst(ir_to_mesa_dst_reg reg)
 {
-   ir_to_mesa_src_reg src_reg;
-
-   src_reg.file = reg.file;
-   src_reg.index = reg.index;
-   src_reg.swizzle = SWIZZLE_XYZW;
-   src_reg.negate = 0;
-   src_reg.reladdr = reg.reladdr;
-
-   return src_reg;
+   return ir_to_mesa_src_reg(reg.file, reg.index, NULL);
 }
 
 /**
@@ -460,13 +469,10 @@ ir_to_mesa_visitor::ir_to_mesa_emit_scalar_op1(ir_instruction *ir,
 struct ir_to_mesa_src_reg
 ir_to_mesa_visitor::src_reg_for_float(float val)
 {
-   ir_to_mesa_src_reg src_reg;
+   ir_to_mesa_src_reg src_reg(PROGRAM_CONSTANT, -1, NULL);
 
-   src_reg.file = PROGRAM_CONSTANT;
    src_reg.index = _mesa_add_unnamed_constant(this->prog->Parameters,
 					      &val, 1, &src_reg.swizzle);
-   src_reg.reladdr = NULL;
-   src_reg.negate = 0;
 
    return src_reg;
 }
@@ -1238,7 +1244,6 @@ get_builtin_matrix_ref(void *mem_ctx, struct gl_program *prog, ir_variable *var,
 void
 ir_to_mesa_visitor::visit(ir_dereference_variable *ir)
 {
-   ir_to_mesa_src_reg src_reg;
    variable_storage *entry = find_variable_storage(ir->var);
    unsigned int loc;
    int len;
@@ -1340,17 +1345,7 @@ ir_to_mesa_visitor::visit(ir_dereference_variable *ir)
       }
    }
 
-   src_reg.file = entry->file;
-   src_reg.index = entry->index;
-   /* If the type is smaller than a vec4, replicate the last channel out. */
-   if (ir->type->is_scalar() || ir->type->is_vector())
-      src_reg.swizzle = swizzle_for_size(ir->var->type->vector_elements);
-   else
-      src_reg.swizzle = SWIZZLE_NOOP;
-   src_reg.reladdr = NULL;
-   src_reg.negate = 0;
-
-   this->result = src_reg;
+   this->result = ir_to_mesa_src_reg(entry->file, entry->index, ir->var->type);
 }
 
 void
@@ -1367,17 +1362,13 @@ ir_to_mesa_visitor::visit(ir_dereference_array *ir)
    if (deref_var && strncmp(deref_var->var->name,
 			    "gl_TextureMatrix",
 			    strlen("gl_TextureMatrix")) == 0) {
-      ir_to_mesa_src_reg src_reg;
       struct variable_storage *entry;
 
       entry = get_builtin_matrix_ref(this->mem_ctx, this->prog, deref_var->var,
 				     ir->array_index);
       assert(entry);
 
-      src_reg.file = entry->file;
-      src_reg.index = entry->index;
-      src_reg.swizzle = swizzle_for_size(ir->type->vector_elements);
-      src_reg.negate = 0;
+      ir_to_mesa_src_reg src_reg(entry->file, entry->index, ir->type);
 
       if (index) {
 	 src_reg.reladdr = NULL;
@@ -1646,17 +1637,14 @@ ir_to_mesa_visitor::visit(ir_constant *ir)
       ir_to_mesa_dst_reg mat_column = ir_to_mesa_dst_reg_from_src(mat);
 
       for (i = 0; i < ir->type->matrix_columns; i++) {
-	 src_reg.file = PROGRAM_CONSTANT;
-
 	 assert(ir->type->base_type == GLSL_TYPE_FLOAT);
 	 values = &ir->value.f[i * ir->type->vector_elements];
 
+	 src_reg = ir_to_mesa_src_reg(PROGRAM_CONSTANT, -1, NULL);
 	 src_reg.index = _mesa_add_unnamed_constant(this->prog->Parameters,
-						    values,
-						    ir->type->vector_elements,
-						    &src_reg.swizzle);
-	 src_reg.reladdr = NULL;
-	 src_reg.negate = 0;
+						values,
+						ir->type->vector_elements,
+						&src_reg.swizzle);
 	 ir_to_mesa_emit_op1(ir, OPCODE_MOV, mat_column, src_reg);
 
 	 mat_column.index++;
@@ -1689,13 +1677,11 @@ ir_to_mesa_visitor::visit(ir_constant *ir)
       assert(!"Non-float/uint/int/bool constant");
    }
 
-   src_reg.index = _mesa_add_unnamed_constant(this->prog->Parameters,
-					      values, ir->type->vector_elements,
-					      &src_reg.swizzle);
-   src_reg.reladdr = NULL;
-   src_reg.negate = 0;
-
-   this->result = src_reg;
+   this->result = ir_to_mesa_src_reg(PROGRAM_CONSTANT, -1, ir->type);
+   this->result.index = _mesa_add_unnamed_constant(this->prog->Parameters,
+						   values,
+						   ir->type->vector_elements,
+						   &this->result.swizzle);
 }
 
 function_entry *
@@ -1825,7 +1811,7 @@ ir_to_mesa_visitor::visit(ir_call *ir)
 void
 ir_to_mesa_visitor::visit(ir_texture *ir)
 {
-   ir_to_mesa_src_reg result_src, coord, lod_info = { 0 }, projector;
+   ir_to_mesa_src_reg result_src, coord, lod_info, projector;
    ir_to_mesa_dst_reg result_dst, coord_dst;
    ir_to_mesa_instruction *inst = NULL;
    prog_opcode opcode = OPCODE_NOP;