mesa: allow for extra per-context init

(cherry picked from commit 815cdcfbc0)

src/mesa/main/context.c

@@ -1234,6 +1234,10 @@ _mesa_initialize_context(GLcontext *ctx,
       ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE;
    }
 
+#ifdef FEATURE_extra_context_init
+   _mesa_initialize_context_extra(ctx);
+#endif
+
    ctx->FirstTimeCurrent = GL_TRUE;
 
    return GL_TRUE;

src/mesa/main/context.h

@@ -114,6 +114,9 @@ _mesa_initialize_context( GLcontext *ctx,
                           const struct dd_function_table *driverFunctions,
                           void *driverContext );
 
+extern void
+_mesa_initialize_context_extra(GLcontext *ctx);
+
 extern void
 _mesa_free_context_data( GLcontext *ctx );
 

src/mesa/main/points.c

@@ -254,11 +254,7 @@ _mesa_init_point(GLcontext *ctx)
    ctx->Point.MaxSize
       = MAX2(ctx->Const.MaxPointSize, ctx->Const.MaxPointSizeAA);
    ctx->Point.Threshold = 1.0;
-#if FEATURE_es2_glsl
-   ctx->Point.PointSprite = GL_TRUE; /* GL_ARB/NV_point_sprite */
-#else
    ctx->Point.PointSprite = GL_FALSE; /* GL_ARB/NV_point_sprite */
-#endif
    ctx->Point.SpriteRMode = GL_ZERO; /* GL_NV_point_sprite (only!) */
    ctx->Point.SpriteOrigin = GL_UPPER_LEFT; /* GL_ARB_point_sprite */
    for (i = 0; i < MAX_TEXTURE_UNITS; i++) {