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-rw-r--r--src/mesa/main/shaderapi.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 656ee112e55..118e8a74209 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -1718,6 +1718,8 @@ _mesa_GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei *length,
}
*length = 0;
+ _mesa_error(ctx, GL_INVALID_OPERATION,
+ "glGetProgramBinary(driver supports zero binary formats)");
(void) binaryFormat;
(void) binary;