init_matrix_stack(&ctx->ProgramMatrixStack[i],
MAX_PROGRAM_MATRIX_STACK_DEPTH, _NEW_TRACK_MATRIX);
ctx->CurrentStack = &ctx->ModelviewMatrixStack;
init_matrix_stack(&ctx->ProgramMatrixStack[i],
MAX_PROGRAM_MATRIX_STACK_DEPTH, _NEW_TRACK_MATRIX);
ctx->CurrentStack = &ctx->ModelviewMatrixStack;