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, 5 insertions, 1 deletions

diff --git a/src/mesa/shader/shader_api.c b/src/mesa/shader/shader_api.c
index d53580f5f6..e8eaa9c103 100644
--- a/src/mesa/shader/shader_api.c
+++ b/src/mesa/shader/shader_api.c
@@ -1715,7 +1715,11 @@ set_program_uniform(GLcontext *ctx, struct gl_program *program,
           */
          FLUSH_VERTICES(ctx, _NEW_TEXTURE | _NEW_PROGRAM);
          _mesa_update_shader_textures_used(program);
-         ctx->Driver.ProgramStringNotify(ctx, program->Target, program);
+         /* Do we need to care about the return value here?
+          * This should not be the first time the driver was notified of
+          * this program.
+          */
+         (void) ctx->Driver.ProgramStringNotify(ctx, program->Target, program);
       }
    }
    else {