mesa/main: Make FEATURE_texgen follow feature conventions.

As shown in mfeatures.h, this allows users of texgen.h to work without
knowing if the feature is available.

3 files changed, 42 insertions, 14 deletions

diff --git a/src/mesa/main/api_exec.c b/src/mesa/main/api_exec.c
index a2f0dfabda..b7b9aa0bf2 100644
--- a/src/mesa/main/api_exec.c
+++ b/src/mesa/main/api_exec.c
@@ -93,9 +93,7 @@
 #include "texenv.h"
 #include "texgetimage.h"
 #include "teximage.h"
-#if FEATURE_texgen
 #include "texgen.h"
-#endif
 #include "texobj.h"
 #include "texparam.h"
 #include "texstate.h"
@@ -275,17 +273,7 @@ _mesa_init_exec_table(struct _glapi_table *exec)
    SET_TexEnvf(exec, _mesa_TexEnvf);
    SET_TexEnviv(exec, _mesa_TexEnviv);
 
-#if FEATURE_texgen
-   SET_GetTexGendv(exec, _mesa_GetTexGendv);
-   SET_GetTexGenfv(exec, _mesa_GetTexGenfv);
-   SET_GetTexGeniv(exec, _mesa_GetTexGeniv);
-   SET_TexGend(exec, _mesa_TexGend);
-   SET_TexGendv(exec, _mesa_TexGendv);
-   SET_TexGenf(exec, _mesa_TexGenf);
-   SET_TexGenfv(exec, _mesa_TexGenfv);
-   SET_TexGeni(exec, _mesa_TexGeni);
-   SET_TexGeniv(exec, _mesa_TexGeniv);
-#endif
+   _mesa_init_texgen_dispatch(exec);
 
    SET_TexImage1D(exec, _mesa_TexImage1D);
    SET_TexParameterf(exec, _mesa_TexParameterf);
diff --git a/src/mesa/main/texgen.c b/src/mesa/main/texgen.c
index e3feb024c3..8c98ee3602 100644
--- a/src/mesa/main/texgen.c
+++ b/src/mesa/main/texgen.c
@@ -36,6 +36,10 @@
 #include "main/macros.h"
 #include "main/texgen.h"
 #include "math/m_matrix.h"
+#include "glapi/dispatch.h"
+
+
+#if FEATURE_texgen
 
 
 /**
@@ -337,3 +341,19 @@ _mesa_GetTexGeniv( GLenum coord, GLenum pname, GLint *params )
 }
 
 
+void 
+_mesa_init_texgen_dispatch(struct _glapi_table *disp)
+{
+   SET_GetTexGendv(disp, _mesa_GetTexGendv);
+   SET_GetTexGenfv(disp, _mesa_GetTexGenfv);
+   SET_GetTexGeniv(disp, _mesa_GetTexGeniv);
+   SET_TexGend(disp, _mesa_TexGend);
+   SET_TexGendv(disp, _mesa_TexGendv);
+   SET_TexGenf(disp, _mesa_TexGenf);
+   SET_TexGenfv(disp, _mesa_TexGenfv);
+   SET_TexGeni(disp, _mesa_TexGeni);
+   SET_TexGeniv(disp, _mesa_TexGeniv);
+}
+
+
+#endif /* FEATURE_texgen */
diff --git a/src/mesa/main/texgen.h b/src/mesa/main/texgen.h
index 073588efcd..2ca026de3d 100644
--- a/src/mesa/main/texgen.h
+++ b/src/mesa/main/texgen.h
@@ -27,9 +27,16 @@
 #define TEXGEN_H
 
 
-#include "main/glheader.h"
+#include "main/mtypes.h"
 
 
+#if FEATURE_texgen
+
+#define _MESA_INIT_TEXGEN_FUNCTIONS(driver, impl) \
+   do {                                           \
+      (driver)->TexGen = impl ## TexGen;          \
+   } while (0)
+
 extern void GLAPIENTRY
 _mesa_GetTexGendv( GLenum coord, GLenum pname, GLdouble *params );
 
@@ -57,6 +64,19 @@ _mesa_TexGeni( GLenum coord, GLenum pname, GLint param );
 extern void GLAPIENTRY
 _mesa_TexGeniv( GLenum coord, GLenum pname, const GLint *params );
 
+extern void 
+_mesa_init_texgen_dispatch(struct _glapi_table *disp);
+
+#else /* FEATURE_texgen */
+
+#define _MESA_INIT_TEXGEN_FUNCTIONS(driver, impl) do { } while (0)
+
+static INLINE void 
+_mesa_init_texgen_dispatch(struct _glapi_table *disp)
+{
+}
+
+#endif /* FEATURE_texgen */
 
 
 #endif /* TEXGEN_H */