glsl: Add ir_variable::interface_type field

[mesa.git] / src / glsl / ir.h

diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index f019837d5f7f14cf5e728e9f3251ce2df09d28b6..ff47b3a5a80b00da9e20371dffceb834a49f3422 100644 (file)
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -265,9 +265,11 @@ protected:
 enum ir_variable_mode {
    ir_var_auto = 0,     /**< Function local variables and globals. */
    ir_var_uniform,      /**< Variable declared as a uniform. */
-   ir_var_in,
-   ir_var_out,
-   ir_var_inout,
+   ir_var_shader_in,
+   ir_var_shader_out,
+   ir_var_function_in,
+   ir_var_function_out,
+   ir_var_function_inout,
    ir_var_const_in,    /**< "in" param that must be a constant expression */
    ir_var_system_value, /**< Ex: front-face, instance-id, etc. */
    ir_var_temporary    /**< Temporary variable generated during compilation. */
@@ -347,6 +349,14 @@ public:
     */
    glsl_interp_qualifier determine_interpolation_mode(bool flat_shade);
 
+   /**
+    * Determine whether or not a variable is part of a uniform block.
+    */
+   inline bool is_in_uniform_block() const
+   {
+      return this->mode == ir_var_uniform && this->interface_type != NULL;
+   }
+
    /**
     * Declared type of the variable
     */
@@ -401,7 +411,7 @@ public:
     *
     * \sa ir_variable_mode
     */
-   unsigned mode:3;
+   unsigned mode:4;
 
    /**
     * Interpolation mode for shader inputs / outputs
@@ -436,6 +446,24 @@ public:
     */
    unsigned has_initializer:1;
 
+   /**
+    * Is this variable a generic output or input that has not yet been matched
+    * up to a variable in another stage of the pipeline?
+    *
+    * This is used by the linker as scratch storage while assigning locations
+    * to generic inputs and outputs.
+    */
+   unsigned is_unmatched_generic_inout:1;
+
+   /**
+    * If non-zero, then this variable may be packed along with other variables
+    * into a single varying slot, so this offset should be applied when
+    * accessing components.  For example, an offset of 1 means that the x
+    * component of this variable is actually stored in component y of the
+    * location specified by \c location.
+    */
+   unsigned location_frac:2;
+
    /**
     * \brief Layout qualifier for gl_FragDepth.
     *
@@ -512,6 +540,14 @@ public:
     * objects.
     */
    ir_constant *constant_initializer;
+
+   /**
+    * For variables that are in an interface block or are an instance of an
+    * interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
+    *
+    * \sa ir_variable::location
+    */
+   const glsl_type *interface_type;
 };
 
 
@@ -890,7 +926,7 @@ public:
    unsigned write_mask:4;
 };
 
-/* Update ir_expression::num_operands() and operator_strs when
+/* Update ir_expression::get_num_operands() and operator_strs when
  * updating this list.
  */
 enum ir_expression_operation {
@@ -951,6 +987,28 @@ enum ir_expression_operation {
    ir_unop_dFdy,
    /*@}*/
 
+   /**
+    * \name Floating point pack and unpack operations.
+    */
+   /*@{*/
+   ir_unop_pack_snorm_2x16,
+   ir_unop_pack_unorm_2x16,
+   ir_unop_pack_half_2x16,
+   ir_unop_unpack_snorm_2x16,
+   ir_unop_unpack_unorm_2x16,
+   ir_unop_unpack_half_2x16,
+   /*@}*/
+
+   /**
+    * \name Lowered floating point unpacking operations.
+    *
+    * \see lower_packing_builtins_visitor::split_unpack_half_2x16
+    */
+   /*@{*/
+   ir_unop_unpack_half_2x16_split_x,
+   ir_unop_unpack_half_2x16_split_y,
+   /*@}*/
+
    ir_unop_noise,
 
    /**
@@ -1017,10 +1075,27 @@ enum ir_expression_operation {
 
    ir_binop_pow,
 
+   /**
+    * \name Lowered floating point packing operations.
+    *
+    * \see lower_packing_builtins_visitor::split_pack_half_2x16
+    */
+   /*@{*/
+   ir_binop_pack_half_2x16_split,
+   /*@}*/
+
+   /**
+    * Load a value the size of a given GLSL type from a uniform block.
+    *
+    * operand0 is the ir_constant uniform block index in the linked shader.
+    * operand1 is a byte offset within the uniform block.
+    */
+   ir_binop_ubo_load,
+
    /**
     * A sentinel marking the last of the binary operations.
     */
-   ir_last_binop = ir_binop_pow,
+   ir_last_binop = ir_binop_ubo_load,
 
    ir_quadop_vector,