#define MGA_ARG2 1
#define MGA_ALPHA 2
-GLboolean mgaUpdateTextureEnvCombine( GLcontext *ctx, int unit )
+GLboolean mgaUpdateTextureEnvCombine( struct gl_context *ctx, int unit )
{
mgaContextPtr mmesa = MGA_CONTEXT(ctx);
const int source = mmesa->tmu_source[unit];