mesa: change ctx->Driver.ProgramStringNotify() to return GLboolean

GL_TRUE indicates that the driver accepts the program.
GL_FALSE indicates the program can't be compiled/translated by the
driver for some reason (too many resources used, etc).

Propogate this result up to the GL API: set GL_INVALID_OPERATION
error if glProgramString() was called.  Set shader program link
status to GL_FALSE if glLinkProgram() was called.

At this point, drivers still don't do any program checking and
always return GL_TRUE.

1 files changed, 7 insertions, 3 deletions

diff --git a/src/mesa/main/dd.h b/src/mesa/main/dd.h
index 6705c901dd5..d98a14e09c4 100644
--- a/src/mesa/main/dd.h
+++ b/src/mesa/main/dd.h
@@ -581,9 +581,13 @@ struct dd_function_table {
    struct gl_program * (*NewProgram)(GLcontext *ctx, GLenum target, GLuint id);
    /** Delete a program */
    void (*DeleteProgram)(GLcontext *ctx, struct gl_program *prog);   
-   /** Notify driver that a program string has been specified. */
-   void (*ProgramStringNotify)(GLcontext *ctx, GLenum target, 
-			       struct gl_program *prog);
+   /**
+    * Notify driver that a program string (and GPU code) has been specified
+    * or modified.  Return GL_TRUE or GL_FALSE to indicate if the program is
+    * supported by the driver.
+    */
+   GLboolean (*ProgramStringNotify)(GLcontext *ctx, GLenum target, 
+                                    struct gl_program *prog);
 
    /** Query if program can be loaded onto hardware */
    GLboolean (*IsProgramNative)(GLcontext *ctx, GLenum target,