r5xx: Detangle FP fallback and translation switches.

r5xx should fallback if it encounters a bad FP.
TODO: Re-enable the dumb shader so we don't have to completely fallback.

src/mesa/drivers/dri/r300/r500_fragprog.c

@@ -331,20 +331,19 @@ void r500TranslateFragmentShader(r300ContextPtr r300,
 			radeonCompilerDump(&compiler.compiler);
 		}
 
-		if (!r500FragmentProgramEmit(&compiler))
-			fp->error = GL_TRUE;
+		fp->translated = r500FragmentProgramEmit(&compiler);
 
 		radeonCompilerCleanup(&compiler.compiler);
 
 		r300UpdateStateParameters(r300->radeon.glCtx, _NEW_PROGRAM);
 
-		fp->translated = GL_TRUE;
 		if (RADEON_DEBUG & DEBUG_PIXEL) {
 			fprintf(stderr, "Mesa program:\n");
 			fprintf(stderr, "-------------\n");
 			_mesa_print_program(&fp->mesa_program.Base);
 			fflush(stdout);
-			dump_program(&fp->code);
+			if (fp->translated)
+				dump_program(&fp->code);
 		}
 
 	}

src/mesa/drivers/dri/r300/r500_fragprog_emit.c

@@ -1296,7 +1296,7 @@ static GLboolean parse_program(struct r500_pfs_compile_state *cs)
 			fpi = clause->Instructions + ip;
 			counter = do_inst(cs, fpi, counter);
 
-			if (cs->compiler->fp->error == GL_TRUE)
+			if (cs->compiler->fp->error)
 				return GL_FALSE;
 		}
 	}