glsl: Add glsl_type::sampler_index

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

diff --git a/src/glsl/glsl_types.h b/src/glsl/glsl_types.h
index 048696693be7fe18b27bf2ae4456de9d532aa0a4..2997c9311499c7b9daa8d208436ae721dfc79efa 100644 (file)
--- a/src/glsl/glsl_types.h
+++ b/src/glsl/glsl_types.h
@@ -28,22 +28,25 @@
 
 #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,
@@ -62,9 +65,13 @@ 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;
@@ -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
     *
@@ -336,6 +354,11 @@ struct glsl_type {
     */
    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
     */
@@ -478,6 +501,7 @@ private:
    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[];
    /*@}*/
 
    /**
@@ -496,6 +520,7 @@ private:
    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);
    /*@}*/
 
    /**
@@ -516,4 +541,6 @@ struct glsl_struct_field {
    const char *name;
 };
 
+#endif /* __cplusplus */
+
 #endif /* GLSL_TYPES_H */