glsl: Drop the round-trip through ast_type_specifier for many builtin types.

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

diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index ab6858faac736a7c54d714455c3307cde9ef9719..48d41d7f8e68f3ed07c37026317e2815abee7768 100644 (file)
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -26,24 +26,27 @@
 #ifndef GLSL_TYPES_H
 #define GLSL_TYPES_H
 
-#include <cstring>
-#include <cassert>
+#include <string.h>
+#include <assert.h>
+#include "main/mtypes.h" /* for gl_texture_index, C++'s enum rules are broken */
 
+#ifdef __cplusplus
 extern "C" {
-#include "GL/gl.h"
-}
-
-#include "ralloc.h"
+#endif
 
 struct _mesa_glsl_parse_state;
 struct glsl_symbol_table;
 
-extern "C" void
+extern void
 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state);
 
-extern "C" void
+extern void
 _mesa_glsl_release_types(void);
 
+#ifdef __cplusplus
+}
+#endif
+
 enum glsl_base_type {
    GLSL_TYPE_UINT = 0,
    GLSL_TYPE_INT,
@@ -62,15 +65,19 @@ enum glsl_sampler_dim {
    GLSL_SAMPLER_DIM_3D,
    GLSL_SAMPLER_DIM_CUBE,
    GLSL_SAMPLER_DIM_RECT,
-   GLSL_SAMPLER_DIM_BUF
+   GLSL_SAMPLER_DIM_BUF,
+   GLSL_SAMPLER_DIM_EXTERNAL
 };
 
+#ifdef __cplusplus
+#include "GL/gl.h"
+#include "ralloc.h"
 
 struct glsl_type {
    GLenum gl_type;
    glsl_base_type base_type;
 
-   unsigned sampler_dimensionality:3;
+   unsigned sampler_dimensionality:3; /**< \see glsl_sampler_dim */
    unsigned sampler_shadow:1;
    unsigned sampler_array:1;
    unsigned sampler_type:2;    /**< Type of data returned using this sampler.
@@ -177,6 +184,17 @@ struct glsl_type {
     */
    const glsl_type *get_base_type() const;
 
+   /**
+    * Get the basic scalar type which this type aggregates.
+    *
+    * If the type is a numeric or boolean scalar, vector, or matrix, or an
+    * array of any of those, this function gets the scalar type of the
+    * individual components.  For structs and arrays of structs, this function
+    * returns the struct type.  For samplers and arrays of samplers, this
+    * function returns the sampler type.
+    */
+   const glsl_type *get_scalar_type() const;
+
    /**
     * Query the type of elements in an array
     *
@@ -224,6 +242,41 @@ struct glsl_type {
     */
    unsigned component_slots() const;
 
+   /**
+    * \brief Can this type be implicitly converted to another?
+    *
+    * \return True if the types are identical or if this type can be converted
+    *         to \c desired according to Section 4.1.10 of the GLSL spec.
+    *
+    * \verbatim
+    * From page 25 (31 of the pdf) of the GLSL 1.50 spec, Section 4.1.10
+    * Implicit Conversions:
+    *
+    *     In some situations, an expression and its type will be implicitly
+    *     converted to a different type. The following table shows all allowed
+    *     implicit conversions:
+    *
+    *     Type of expression | Can be implicitly converted to
+    *     --------------------------------------------------
+    *     int                  float
+    *     uint
+    *
+    *     ivec2                vec2
+    *     uvec2
+    *
+    *     ivec3                vec3
+    *     uvec3
+    *
+    *     ivec4                vec4
+    *     uvec4
+    *
+    *     There are no implicit array or structure conversions. For example,
+    *     an array of int cannot be implicitly converted to an array of float.
+    *     There are no implicit conversions between signed and unsigned
+    *     integers.
+    * \endverbatim
+    */
+   bool can_implicitly_convert_to(const glsl_type *desired) const;
 
    /**
     * Query whether or not a type is a scalar (non-vector and non-matrix).
@@ -295,6 +348,17 @@ struct glsl_type {
       return base_type == GLSL_TYPE_SAMPLER;
    }
 
+   /**
+    * Query whether or not type is a sampler, or for struct and array
+    * types, contains a sampler.
+    */
+   bool contains_sampler() const;
+
+   /**
+    * Get the Mesa texture target index for a sampler type.
+    */
+   gl_texture_index sampler_index() const;
+
    /**
     * Query whether or not a type is an array
     */
@@ -427,15 +491,18 @@ private:
    /*@{*/
    static const glsl_type _error_type;
    static const glsl_type _void_type;
+   static const glsl_type _sampler3D_type;
    static const glsl_type builtin_core_types[];
    static const glsl_type builtin_structure_types[];
    static const glsl_type builtin_110_deprecated_structure_types[];
    static const glsl_type builtin_110_types[];
    static const glsl_type builtin_120_types[];
    static const glsl_type builtin_130_types[];
+   static const glsl_type builtin_140_types[];
    static const glsl_type builtin_ARB_texture_rectangle_types[];
    static const glsl_type builtin_EXT_texture_array_types[];
    static const glsl_type builtin_EXT_texture_buffer_object_types[];
+   static const glsl_type builtin_OES_EGL_image_external_types[];
    /*@}*/
 
    /**
@@ -448,11 +515,14 @@ private:
     */
    /*@{*/
    static void generate_100ES_types(glsl_symbol_table *);
-   static void generate_110_types(glsl_symbol_table *);
-   static void generate_120_types(glsl_symbol_table *);
-   static void generate_130_types(glsl_symbol_table *);
+   static void generate_110_types(glsl_symbol_table *, bool add_deprecated);
+   static void generate_120_types(glsl_symbol_table *, bool add_deprecated);
+   static void generate_130_types(glsl_symbol_table *, bool add_deprecated);
+   static void generate_140_types(glsl_symbol_table *);
    static void generate_ARB_texture_rectangle_types(glsl_symbol_table *, bool);
    static void generate_EXT_texture_array_types(glsl_symbol_table *, bool);
+   static void generate_OES_texture_3D_types(glsl_symbol_table *, bool);
+   static void generate_OES_EGL_image_external_types(glsl_symbol_table *, bool);
    /*@}*/
 
    /**
@@ -473,4 +543,6 @@ struct glsl_struct_field {
    const char *name;
 };
 
+#endif /* __cplusplus */
+
 #endif /* GLSL_TYPES_H */