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-rw-r--r--src/mesa/shader/arbprogram.c10
-rw-r--r--src/mesa/shader/program.c4
2 files changed, 12 insertions, 2 deletions
diff --git a/src/mesa/shader/arbprogram.c b/src/mesa/shader/arbprogram.c
index 91fb6910381..bff80d7ee3a 100644
--- a/src/mesa/shader/arbprogram.c
+++ b/src/mesa/shader/arbprogram.c
@@ -195,13 +195,15 @@ _mesa_GetVertexAttribPointervARB(GLuint index, GLenum pname, GLvoid **pointer)
GLboolean GLAPIENTRY
_mesa_IsProgramARB(GLuint id)
{
+ struct gl_program *prog = NULL;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (id == 0)
return GL_FALSE;
- if (_mesa_lookup_program(ctx, id))
+ prog = _mesa_lookup_program(ctx, id);
+ if (prog && (prog != &_mesa_DummyProgram))
return GL_TRUE;
else
return GL_FALSE;
@@ -765,6 +767,7 @@ void GLAPIENTRY
_mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
{
const struct gl_program *prog;
+ char *dst = (char *) string;
GET_CURRENT_CONTEXT(ctx);
if (!ctx->_CurrentProgram)
@@ -788,5 +791,8 @@ _mesa_GetProgramStringARB(GLenum target, GLenum pname, GLvoid *string)
return;
}
- _mesa_memcpy(string, prog->String, _mesa_strlen((char *) prog->String));
+ if (prog->String)
+ _mesa_memcpy(dst, prog->String, _mesa_strlen((char *) prog->String));
+ else
+ *dst = '\0';
}
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c
index 789d36eba02..ddfad47b894 100644
--- a/src/mesa/shader/program.c
+++ b/src/mesa/shader/program.c
@@ -207,6 +207,7 @@ _mesa_init_program_struct( GLcontext *ctx, struct gl_program *prog,
prog->Target = target;
prog->Resident = GL_TRUE;
prog->RefCount = 1;
+ prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
}
return prog;
@@ -284,6 +285,9 @@ _mesa_delete_program(GLcontext *ctx, struct gl_program *prog)
(void) ctx;
ASSERT(prog);
+ if (prog == &_mesa_DummyProgram)
+ return;
+
if (prog->String)
_mesa_free(prog->String);